INSTALLATION AND OPERATION MANUAL - ecr-nederland.nl · ce - declaration-of-conformity ce -...

INSTALLATION ANDOPERATION MANUAL

EUWAN5KBZW1EUWAN8KBZW1EUWAN10KBZW1EUWAN12KBZW1EUWAN16KBZW1EUWAN20KBZW1EUWAN24KBZW1

EUWAP5KBZW1EUWAP8KBZW1EUWAP10KBZW1EUWAP12KBZW1EUWAP16KBZW1EUWAP20KBZW1EUWAP24KBZW1

EUWAB5KBZW1EUWAB8KBZW1EUWAB10KBZW1EUWAB12KBZW1EUWAB16KBZW1EUWAB20KBZW1EUWAB24KBZW1

Packaged air-cooled water chillers

4PW61653-1_digital_EN.book Thursday, August 26, 2010 1:49 PM

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4PW61653-1_digital_EN.book Page 1 Thursday, August 26, 2010 1:49 PM

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ive d

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ent(s

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d th

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ccor

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02de

r/den

folge

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Nor

m(e

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der e

inem

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eren

Nor

mdo

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doku

men

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entsp

richt

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spre

chen

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er d

er V

orau

sset

zung

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ß sie

gem

äß u

nser

en A

nweis

unge

n ein

gese

tzt w

erde

n:03

sont

confo

rmes

à la/

aux n

orm

e(s)

ou au

tre(s

) doc

umen

t(s) n

orm

atif(

s), p

our a

utan

t qu'i

ls so

ient u

tilisé

s con

form

émen

t à no

s ins

tructi

ons:

04co

nform

de vo

lgend

e nor

m(e

n) of

één o

f mee

r and

ere b

inden

de do

cum

ente

n zijn

, op v

oorw

aard

e dat

ze w

orde

n geb

ruikt

over

eenk

omsti

gon

ze in

struc

ties:

05es

tán

en co

nfor

mida

d co

n la(

s) si

guien

te(s

) nor

ma(

s) u

otro

(s) d

ocum

ento

(s) n

orm

ativo

(s),

siem

pre

que

sean

utili

zado

s de

acue

rdo

con

nues

tras i

nstru

ccion

es:

06so

no c

onfor

mi a

l(i) s

egue

nte(

i) sta

ndar

d(s)

o a

ltro(

i) do

cum

ento

(i) a

car

atte

re n

orm

ativo

, a p

atto

che

ven

gano

usa

ti in

conf

orm

ità a

lleno

stre

istru

zioni:

07Â›Ó·

È Û‡

ÌÊˆÓ·

ÌÂ

ÙÔ(·

) ·Î

fiÏÔ˘

ıÔ(·

) Ú

fiÙ˘

Ô(·)

‹ ¿

ÏÏÔ

¤ÁÁÚ

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·) Î

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ÈÛÌÒ

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fi Ù

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ÚÔ¸

fiıÂÛ

Ë fiÙ

È ¯Ú

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ÓÙ·È

Û‡ÌÊ

ˆÓ·

ÌÂ

ÙÈ˜

Ô‰ËÁ

›Â˜

Ì·˜:

08es

tão

em c

onfo

rmida

de c

om a

(s) s

eguin

te(s

) nor

ma(

s) o

u ou

tro(s

) doc

umen

to(s

) nor

mat

ivo(s

), de

sde

que

este

s se

jam u

tiliza

dos

deac

ordo

com

as n

ossa

s ins

truçõ

es:

09со

отве

тств

уют

след

ующи

м ст

анда

ртам

или

дру

гим

норм

атив

ным

доку

мент

ам, п

ри у

слов

ии и

х ис

поль

зова

ния

согл

асно

наш

имин

стру

кция

м:10

over

holde

r fø

lgend

e sta

ndar

d(er

) ell

er a

ndet

/and

re r

etnin

gsgiv

ende

dok

umen

t(er),

for

udsa

t at

diss

e an

vend

es i

henh

old t

il vo

reins

truks

er:

11re

spek

tive

utru

stning

är u

tförd

i öv

eren

sstä

mm

else

med

och

följe

r följ

ande

sta

ndar

d(er

) elle

r and

ra n

orm

givan

de d

okum

ent,

unde

rfö

rutsä

ttning

att

anvä

ndnin

g sk

er i ö

vere

nsstä

mm

else

med

våra

instr

uktio

ner:

12re

spek

tive

utsty

r er i

ove

rens

stem

mels

e m

ed fø

lgend

e sta

ndar

d(er

) elle

r and

re n

orm

given

de d

okum

ent(e

r), u

nder

foru

tsset

ning

av a

tdis

se b

ruke

s i h

enho

ld til

våre

instr

ukse

r:13

vasta

avat

seu

raav

ien s

tand

ardie

n ja

muid

en o

hjeell

isten

dok

umen

ttien

vaat

imuk

sia e

delly

ttäen

, et

tä n

iitä k

äyte

tään

ohje

idem

me

muk

aises

ti:14

za p

ředp

oklad

u, že

jsou

využ

ívány

v so

uladu

s na

šimi p

okyn

y, o

dpov

ídají

nás

ledují

cím n

orm

ám n

ebo

norm

ativn

ím d

okum

entů

m:

15u

sklad

u sa

slije

dećim

stan

dard

om(im

a) ili

dru

gim n

orm

ativn

im d

okum

ento

m(im

a), u

z uvje

t da

se o

ni ko

riste

u sk

ladu

s naš

im u

puta

ma:

16m

egfe

lelne

k az a

lábbi

szab

vány

(ok)

nak v

agy e

gyéb

irán

yadó

dok

umen

tum

(ok)

nak,

ha a

zoka

t előí

rás s

zerin

t has

ználj

ák:

17sp

ełniaj

ą wy

mog

i nas

tępu

jącyc

h no

rm i

innyc

h do

kum

entó

w no

rmali

zacy

jnych

, pod

war

unkie

m ż

e uż

ywan

e są

zgo

dnie

z na

szym

iins

trukc

jami:

18su

nt în

conf

orm

itate

cu u

rmăt

orul

(urm

ătoa

rele)

stan

dard

(e) s

au a

lt(e)

doc

umen

t(e) n

orm

ativ(

e), c

u co

ndiţia

ca a

ceste

a să

fie u

tiliza

te în

conf

orm

itate

cu in

struc

ţiunil

e no

astre

19sk

ladni

z nas

lednji

mi s

tand

ardi

in dr

ugim

i nor

mat

ivi, p

od p

ogoje

m, d

a se

upo

rablj

ajo v

sklad

u z n

ašim

i nav

odili:

20on

vasta

vuse

s jär

gmis(

t)e st

anda

rdi(t

e)ga

või te

iste

norm

atiiv

sete

dok

umen

tideg

a, ku

i neid

kasu

tata

kse

vasta

valt m

eie ju

hend

itele:

21съ

отве

тств

ат н

а сл

едни

те с

танд

арти

или

дру

ги н

орма

тивн

и до

куме

нти,

при

усл

овие

, че

се

изпо

лзва

т съ

глас

но н

ашит

еин

стру

кции

:22

atitin

ka že

miau

nur

odytu

s sta

ndar

tus i

r (ar

ba) k

itus n

orm

inius

dok

umen

tus s

u są

lyga,

kad

yra

naud

ojam

i pag

al m

ūsų

nuro

dym

us:

23ta

d, ja

lieto

ti atb

ilsto

ši ra

žotā

ja no

rādī

jumiem

, atb

ilst s

ekojo

šiem

stan

darti

em u

n cit

iem n

orm

atīvi

em d

okum

entie

m:

24sú

v zh

ode

s nas

ledov

nou(

ými)

norm

ou(a

mi)

alebo

iným

(i) n

orm

atívn

ym(i)

dok

umen

tom

(am

i), za

pre

dpok

ladu,

že sa

pou

žívajú

v sú

lade

s naš

im n

ávod

om:

25ür

ünün

, tali

mat

larım

ıza g

öre

kulla

nılm

ası k

oşulu

yla a

şağı

daki

stand

artla

r ve

norm

beli

rten

belge

lerle

uyum

ludur

:

01Di

recti

ves,

as a

men

ded.

02Di

rekti

ven,

gem

äß Ä

nder

ung.

03Di

recti

ves,

telle

s que

mod

ifiées

.04

Rich

tlijne

n, zo

als g

eam

ende

erd.

05Di

recti

vas,

segú

n lo

enm

enda

do.

06Di

rettiv

e, co

me

da m

odific

a.07

√‰Ë

ÁÈÒv, fi

ˆ˜

¤¯Ô˘

Ó ÙÚ

ÔÔ

ÔÈËı

Â›.

08Di

recti

vas,

confo

rme

alter

ação

em

.09

Дире

ктив

со в

семи

поп

равк

ами.

10Di

rekti

ver,

med

sene

re æ

ndrin

ger.

11Di

rekti

v, m

ed fö

reta

gna

ändr

ingar

.12

Dire

ktive

r, m

ed fo

reta

tte e

ndrin

ger.

13Di

rektiiv

ejä, s

ellais

ina ku

in ne

ovat

muute

ttuina

.14

v plat

ném

zněn

í.15

Smjer

nice,

kako

je iz

mije

njeno

.16

irány

elv(e

k) és

mód

osítá

saik

rend

elkez

éseit

.17

z póź

niejsz

ymi p

opra

wkam

i.18

Dire

ctive

lor, c

u am

enda

men

tele

resp

ectiv

e.

19Di

rekti

ve z

vsem

i spr

emem

bam

i.20

Dire

ktiivi

d ko

os m

uuda

tuste

ga.

21Ди

рект

иви,

с те

хнит

е из

мене

ния.

22Di

rekty

vose

su p

apild

ymais

.23

Dire

ktīvā

s un

to p

apild

inājum

os.

24Sm

ernic

e, v

platn

om zn

ení.

25De

ğiştir

ilmiş

halle

riyle

Yöne

tmeli

kler.

01fol

lowing

the

prov

ision

s of:

02ge

mäß

den

Vor

schr

iften

der:

03co

nform

émen

t aux

stipu

lation

s des

:04

over

eenk

omsti

g de

bep

aling

en va

n:05

siguie

ndo

las d

ispos

icion

es d

e:06

seco

ndo

le pr

escr

izion

i per

:07

ÌÂ Ù

‹ÚËÛ

Ë Ùˆ

v ‰È·Ù

¿ÍÂˆ

v Ùˆ

v:

08de

aco

rdo

com

o p

revis

to e

m:

09в

соот

ветс

твии

с по

ложе

ниям

и:

10un

der i

agtta

gelse

af b

este

mm

elser

ne i:

11en

ligt v

illkor

en i:

12git

t i he

nhold

til b

este

mm

elsen

e i:

13no

udat

taen

mää

räyk

siä:

14za

dod

ržen

í usta

nove

ní p

ředp

isu:

15pr

ema

odre

dbam

a:16

köve

ti a(z

):17

zgod

nie z

posta

nowi

eniam

i Dyr

ektyw

:18

în u

rma

prev

eder

ilor:

19ob

upo

števa

nju d

oločb

:20

vasta

valt n

õuet

ele:

21сл

едва

йки

клау

зите

на:

22lai

kant

is nu

osta

tų, p

ateik

iamų:

23iev

ērojo

t pra

sības

, kas

not

eikta

s:24

održ

iavajú

c usta

nove

nia:

25bu

nun

koşu

lların

a uy

gun

olara

k:

01

Note

*as

set o

ut in

<A> a

nd ju

dged

posit

ively

by ac

cordi

ng to

the

Certi

ficate

<C>.

02

Hinw

eis *

wie i

n der

<A> a

ufgefü

hrt u

nd vo

n 

posit

iv be

urtei

lt gem

äß Ze

rtifik

at <C

>.03

Re

marq

ue *

tel qu

e défi

ni da

ns <A

> et é

valué

posit

iveme

nt pa

r con

formé

ment

au C

ertifi

cat <

C>.

04

Beme

rk *

zoals

verm

eld in

<A> e

n pos

itief b

eoord

eeld

door

 o

veree

nkom

stig C

ertifi

caat

<C>.

05

Nota

*co

mo se

estab

lece e

n <A>

y es

valor

ado

posit

ivame

nte po

r 

de ac

uerdo

con e

l Ce

rtific

ado <

C>.

06

Nota

*de

linea

to ne

l <A>

e giu

dicato

posit

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nte

da sec

ondo

il Ce

rtific

ato <C

>.07

™Ë

ÌÂ›ˆ

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fiˆ˜

Î·ıÔ

Ú›˙Â

Ù·È Û

ÙÔ <

A> Î

·È Î

Ú›ÓÂ

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ÂÙÈÎ¿

·fi

ÙÔ Û

‡ÌÊˆ

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Â ÙÔ

¶ÈÛÙ

ÔÔÈË

ÙÈÎfi

<C>.

08

Nota

*tal

como

estab

elecid

o em

<A> e

com

o pare

cer

posit

ivo de

 d

e aco

rdo co

m o C

ertifi

cado

<C>.

09

Прим

ечан

ие *

как у

каза

но в

<A>

и в со

отве

тств

ии с

поло

жите

льны

м ре

шени

ем со

глас

но

Свид

етел

ьств

у <C>

.10

Be

mærk

*so

m an

ført i

<A> o

g pos

itivt v

urdere

t af i

henh

old til

Cer

tifika

t <C>

.

11

Infor

matio

n *en

ligt <

A> oc

h god

känts

av enli

gt Ce

rtifik

atet <

C>.

12

Merk

*so

m de

t frem

komm

er i <

A> og

gjen

nom

posit

iv be

dømm

else a

v 

ifølge

Ser

tifika

t <C>

.13

Hu

om *

jotka

on es

itetty

asiak

irjass

a <A>

ja jo

tka on

hyvä

ksyn

yt Se

rtifik

aatin

<C> m

ukais

esti.

14

Pozn

ámka

*jak

bylo

uved

eno v

<A> a

pozit

ivně z

jištěn

o 

v so

uladu

s os

vědč

ením

<C>.

15

Napo

mena

*ka

ko je

izlož

eno u

<A> i

pozit

ivno o

cijen

jeno o

d str

ane pr

ema C

ertif

ikatu

<C>.

16

Megje

gyzé

s *a(

z) <A

> alap

ján, a

(z) iga

zolta

a me

gfelel

ést,

a(z)

<C> t

anús

ítván

y sze

rint.

17

Uwag

a *zg

odnie

z do

kume

ntacją

<A>,

pozy

tywną

opini

ą i Ś

wiad

ectw

em <C

>.18

No

tă *

aşa c

um es

te sta

bilit î

n <A>

şi ap

recia

t poz

itiv

de în c

onfor

mitat

e cu C

ertif

icatu

l <C>

.19

Op

omba

*ko

t je do

ločen

o v <A

> in o

dobr

eno s

stra

ni v

sklad

u s ce

rtifik

atom

<C>.

20

Märk

us *

nagu

on nä

idatud

doku

mend

is <A

> ja h

eaks

kii

detud

 j

ärgi

vasta

valt s

ertif

ikaad

ile <C

>.

21

Забе

лежк

а *ка

кто е

изло

жено

в <A

> и о

цене

но

поло

жите

лно о

т 

съгл

асно

Cе

ртиф

икат

а <C>

.22

Pa

staba

*ka

ip nu

statyt

a <A>

ir ka

ip tei

giama

i nus

pręs

ta pa

gal S

ertif

ikatą

<C>.

23

Piez

īmes

*kā

norā

dīts <

A> un

atbil

stoši

 p

ozitīv

ajam

vērtē

jumam

sask

aņā a

r ser

tifikā

tu <C

>.24

Po

znám

ka *

ako b

olo uv

eden

é v <A

> a po

zitívn

e zist

ené v

súlad

e s o

sved

čením

<C>.

25

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CONTENTS Page

Introduction ..................................................................................... 2

Options and features ......................................................................... 2Options ...................................................................................................... 2Features..................................................................................................... 2

Technical specifications..................................................................... 3Operation range......................................................................................... 3Main components ...................................................................................... 3Safety devices............................................................................................ 4

Electrical specifications ..................................................................... 4Main components ...................................................................................... 4Safety devices............................................................................................ 4Internal wiring - Parts table........................................................................ 5

Installing the unit ............................................................................ 5

Selection of location .......................................................................... 5

Description Dimensions .................................................................... 6

Inspecting and handling the unit ....................................................... 6

Unpacking and placing the unit ......................................................... 6

Important information regarding the refrigerant used........................ 6

Checking the water circuit ................................................................. 6Only for EUWAN version............................................................................ 6For all versions........................................................................................... 6

Connecting the water circuit .............................................................. 6

Water charge, flow and quality .......................................................... 7For all versions........................................................................................... 7Only for EUWAP, EUWAB versions............................................................ 7Water quality specifications ....................................................................... 7Charging water .......................................................................................... 8

Piping insulation ................................................................................ 8

Field wiring ........................................................................................ 8Parts table.................................................................................................. 8Power circuit and cable requirements........................................................ 8Connection of the power supply ................................................................ 8Point for attention regarding quality of the public electric power supply .... 9

Operating the unit ........................................................................... 9

Before operation................................................................................ 9Checks before initial start-up ..................................................................... 9Water supply.............................................................................................. 9Power supply connection and crankcase heating...................................... 9Pump start up .......................................................................................... 10

Operation ........................................................................................ 10Digital controller ....................................................................................... 10Working with the units.............................................................................. 11Advanced features of the digital controller............................................... 14

BMS connection modbus ................................................................ 16General description of Modbus................................................................ 16Implemented error code........................................................................... 17Defining the BMS setting ......................................................................... 17Variables database .................................................................................. 18

Troubleshooting ............................................................................... 18

Maintenance.................................................................................... 20Important information regarding the refrigerant used .............................. 20Maintenance activities ............................................................................. 20Disposal requirements ............................................................................. 20

Menu overview ................................................................................ 21

Thank you for purchasing this Daikin air conditioner.

The English text is the original instruction. Other languages aretranslations of the original instructions.

This appliance is not intended for use by persons, including children,with reduced physical, sensory or mental capabilities, or lack ofexperience and knowledge, unless they have been given supervisionor instruction concerning use of the appliance by a personresponsible for their safety.Children should be supervised to ensure that they do not play withthe appliance.

EUWAN5~24KBZW1EUWAP5~24KBZW1EUWAB5~24KBZW1

Packaged air-cooled water chillersInstallation and

operation manual

READ THIS MANUAL ATTENTIVELY BEFORE STARTINGUP THE UNIT. DO NOT THROW IT AWAY. KEEP IT INYOUR FILES FOR FUTURE REFERENCE.

IMPROPER INSTALLATION OR ATTACHMENT OFEQUIPMENT OR ACCESSORIES COULD RESULT INELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OROTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLYTO USE ACCESSORIES MADE BY DAIKIN WHICH ARESPECIFICALLY DESIGNED FOR USE WITH THE EQUIP-MENT AND HAVE THEM INSTALLED BY A PROFES-SIONAL.

IF UNSURE OF INSTALLATION PROCEDURES OR USE,ALWAYS CONTACT YOUR DAIKIN DEALER FORADVICE AND INFORMATION.

Read the chapter "Operation" on page 10 before changingthe parameters.

Installation and operation manual

1EUWA(*)5~24KBZW1

Packaged air-cooled water chillers4PW61653-1 – 07.2010


INTRODUCTION

This operation manual concerns packaged air-cooled water chillersof the Daikin EUWA(*)-KBZ series. These units are designed foroutdoor installation and used for cooling applications. The units areavailable in 7 standard sizes ranging from 5 to 24 Hp. All sizes areavailable in 3 versions, varying in level of equipment.

The EUWA(*) units can be combined with Daikin fan coil units or airhandling units for air conditioning purposes. They can also be usedfor supplying water for process cooling.

The manual describes the procedures for unpacking, installing andconnecting the EUWA(*) units as well as instructions for adequateoperation and maintenance of the unit and will provide help ifproblems occur.

(*) = N, P, B

OPTIONS AND FEATURES

Refer to the engineering data book for the complete list ofspecifications, options and features.

Options

Glycol application for chilled water temperature down to –10°Cor –5°C.

BMS-connection MODBUS (optional kit address cardEKAC10C)(1)

Remote user interface (optional kit EKRUMCA). (Necessary toadditionally install kit address card EKAC10C.)(1)

Features

Voltage free contacts- general operation- alarm- operation compressor 1- operation compressor 2

Changeable remote inputsFollowing functions can be assigned to a total of 2 digital inputs.- remote start/stop- dual setpoint

(1) When EKAC10C is used in combination with remote user controller EKRUMCA then it is not possible to use the BMS-connection MODBUS.

EUWA(*)5~24KBZW1Packaged air-cooled water chillers4PW61653-1 – 07.2010


2


TECHNICAL SPECIFICATIONS

Single circuit units

Double circuit units

Operation range Main components (See figure 1)

Displayed unit = EUWAB12KBZW1.

1 Condenser

The function of the condenser is to change the state of therefrigerant from gaseous to liquid. The heat gained by the gas inthe evaporator is discharged through the condenser to theambient air, and the vapour condenses to liquid.

2 Compressor

The compressor acts as a pump and circulates the refrigerant inthe refrigeration circuit. It compresses the refrigerant vapourcoming from the evaporator at the pressure at which it can easilybe liquefied in the condenser.

3 Refrigerant filter

The filter installed behind the condenser removes small particlesfrom the refrigerant to prevent blockage of the tubes.

4 Expansion valve

The liquid refrigerant coming from the condenser enters theevaporator via an expansion valve. The expansion valve bringsthe liquid refrigerant to a pressure at which it can easily beevaporated in the evaporator.

5 Evaporator

The main function of the evaporator is to take heat from thewater that flows through it. This is done by turning the liquidrefrigerant, coming from the condenser, into gaseousrefrigerant.

6 Pressure port refrigerant circuit

These ports make it possible to measure refrigerant pressure inthe pipes.

7 Charge valve

Allows refrigerant charge in the circuit.

8 Water in/outlet connection

The water inlet and outlet connection allows an easy connectionof the unit to the water circuit of the air handling unit or industrialequipment.

Unit (Hp) 5 8 10 12Version N P B N P B N P B N P B

Dimensions HxWxD (mm) 1230x1290x734 1230x1290x734 1450x1290x734 1450x1290x734Weight• machine weight (kg) 150 168 180 215 229 241 245 259 271 248 262 274• operation weight (kg) 152 171 239 218 232 300 248 262 330 251 265 335

Connections• water inlet MBSP 1-1/4” 1-1/4” 1-1/4” 1-1/4”• water outlet MBSP 1-1/4” 1-1/4” 1-1/4” 1-1/4”

Internal water volume (l) 2 3 59 3 3 59 3 3 59 3 4 60Expansion vessel• Volume (l) — 12 12 — 12 12 — 12 12 — 12 12• Pre-pressure (bar) — 1.5 1.5 — 1.5 1.5 — 1.5 1.5 — 1.5 1.5

Safety valve water circuit (bar) — 1x3.0 1x3.0 — 1x3.0 1x3.0 — 1x3.0 1x3.0 — 1x3.0 1x3.0

Unit (Hp) 16 20 24Version N P B N P B N P B

Dimensions HxWxD (mm) 1321x2580x734 1541x2580x734 1541x2580x734Weight• machine weight (kg) 430 448 440 490 508 520 496 514 526• operation weight (kg) 436 457 525 496 518 586 503 524 592

Connections• water inlet MBSP 2” 2” 2”• water outlet MBSP 2” 2” 2”

Internal water volume (l) 6 9 65 6 10 66 7 10 66Expansion vessel• Volume (l) — 12 12 — 12 12 — 12 12• Pre-pressure (bar) — 1.5 1.5 — 1.5 1.5 — 1.5 1.5

Safety valve water circuit (bar) — 1x3.0 1x3.0 — 1x3.0 1x3.0 — 1x3.0 1x3.0

A Outdoor temperature

a Standard (water)

b Option (glycol)

°C DB °C dry bulb

LEWT Leaving evaporator water temperature

Pull down operation area

Protect the water circuit against freezing.

When the units operate below –5°C and are installed in a rather windy region, a windscreen is required.


3EUWA(*)5~24KBZW1



9 Pump (only EUWAP, EUWAB)

The pump circulates the water in the circuit.

10 Pressure regulating valve

The pressure regulating valve is used to regulate the water flow inthe system.

11 Expansion vessel (only EUWAP, EUWAB)

The water in the water circuit expands with rising temperatures.The expansion vessel stabilizes the pressure changes withchanging water temperatures by giving free space to thechanging water volume.

12 Buffer tank (only EUWAB)

The buffer tank reduces the variation in water temperature in thewater circuit. This prevents frequent compressor starts andstops.

13 Drain valve

The drain valve permits complete drainage of the chiller watersystem during maintenance or in case of shut down.

14 Fill valve (only EUWAP, EUWAB)

The water circuit can be filled with water via this fill valve.

15 Air purge valve

Remaining air in the chiller water system will be automaticallyremoved via the air purge valve.

16 Pressure ports water circuit

It is possible to detect any blockage in the water circuit or amalfunction of the pump by means of the 3 pressure ports.

U 7/16 flare pressure ports are provided to connect a device formeasuring the pump pressure and the evaporator pressuredrop. The waterflow can be deducted from these pressures(Refer to "Figures pressure characteristics" on page 10).

17 Water filter

The filter installed in front of the pump removes dirt from thewater to prevent damage to the pump or blockage of theevaporator. The water filter should be cleaned on a regular base.

18 Ball valve

A ball valve is installed in front of and behind the water filter toallow filter cleaning without having to drain the water circuit.

19 Manometer

The manometer allows readout of available water pressure toload.

20 Sensor for inlet water temperature

The measured inlet water temperature is used by the controllerfor regulating the outlet water temprature.

21 Low pressure gauge (optional)

Measurement on low pressure side compressor.

22 High pressure gauge (optional)

Measurement on high pressure side compressor.

Safety devices (See figure 1)

23 High-pressure switch

The high-pressure switch is installed on the discharge pipe ofthe unit and measures the condenser pressure (pressure at theoutlet of the compressor). When the pressure is too high, thepressure switch is activated. The unit stops.

When activated, it resets automatically, but the controller needsto be reset manually.

24 Low pressure switch

The low pressure switch is installed on the suction pipe of theunit and measures the evaporator pressure (pressure at the inletof the compressor). When the pressure is too low, the pressureswitch is activated. The unit stops.

25 Discharge thermal protector (general safety device)

The discharge thermal protector is activated when thetemperature of the refrigerant leaving the compressor becomestoo high. The unit stops.

26 Flow switch

The flow switch measures the flow in the water circuit. In casethe flow does not reach the minimum allowed water flow, the unitwill be shut down.

27 Safety valve (only EUWAP, EUWAB)

The safety valve prevents water pressure from exceeding 3 bar. Itprotects the tank against burst. Activation of this safety has noinfluence on the operation of the unit.

28 Sensor for outlet water temperature

The outlet water temperature sensor measures the temperatureof the water at the evaporator outlet. The protection device shutsdown the unit when the temperature of the chilled waterbecomes too low in order to prevent freezing of the water duringoperation.

When water temperature becomes back to normal, the protectorresets automatically, but the controller needs to be resetmanually.

29 Freeze protection (optional)

Heaters protect the chiller water system against freezing.

ELECTRICAL SPECIFICATIONS

Main components (See figure 2) ( only for 16~24 Hp units)

Refer to the wiring diagram supplied with the unit.

1 Power supply intake (L1, L2, L3, N, PE)

The power cables from the local supply panel can be inserted inthe unit through this foreseen entrance.

2 Main switch (S12M)

Power to unit can be disconnected by means of this switch.

3 Switch for pump (S21P)

Pump can be switched between automatically (steered bycontroller) or manually on (for servicing purpose) by means ofthis switch.

4 Digital controller (A1P)

Controls the functioning of the unit.

5 I/O PCB (A2P) (input/output)

The I/O PCB (A2P) is used to connect all internal wiring andfield wiring. It includes some control and safety functions as well.

6 Softstarter (A5P) (possible optional for 5~12 Hp only)

The softstarter reduces the starting current of the compressor.

Safety devices (See figure 2) ( only for 16~24 Hp units)

5 I/O PCB (A2P) (input/output)

The I/O PCB (A2P) contains a reverse phase protector.

The reverse phase protector detects if the 3 phases of the powersupply are connected correctly. If a phase is not connected or if2 phases are inverted, the unit can not start up.

Unit (Hp) 5 8 10 12 16 20 24

Power circuit• Phase 3N~• Frequency (Hz) 50• Voltage (V) 400• Voltage tolerance (%) ±10• Recommended fuses EUWAN (A) 20 25 25 32 40 50 63

EUWAP+B (A) 20 25 32 40 50 50 63



4


7 Fan motor thermal protector (Q11F, Q12F, Q21F, Q22F)

The fan motors are equipped with a thermal protector. Theprotectors are activated when the temperature becomes toohigh. When temperature returns to normal, the protector resetsautomatically.

8 Overcurrent relay for compressor (K4S, K5S)

The overcurrent relay protects the compressor motor in case ofoverload, phase failure or too low voltage. The relay is factoryset and may not be adjusted. When activated, the overcurrentrelay has to be reset in the switch box and the controller needsto be reset manually.

9 Overcurrent relay for pump (K6S)

The overcurrent relay protects the pump motor in case ofoverload, phase failure or too low voltage. The relay is factoryset and may not be adjusted. When activated, the overcurrentrelay has to be reset in the switch box and the controller needsto be reset manually.

10 Fuse for control circuit (F1U)

The fuse for control circuit protects cables of control circuit andcontroller components in case of short circuit.

11 Fuse for control circuit (F4)

The fuse for control circuit protects cables of control circuit andheater(s) for freeze protection in case of short circuit.

12 Fuse for digital controller (F3U)

The fuse protects cables of digital controller and digital controllerin case of short circuit.

Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit. Theabbreviations used are listed below.

A1P ........................PCB: controller PCB

A2P ........................PCB: I/O PCB (input/output)

A3P ............. ** .......PCB: Address card for BMS

A5P ............. ** .......Softstarter for circuit 1

A7P ............. ** .......PCB: remote user interfaceA71P ......................PCB: power supply cardA72P ......................PCB: remote user interface

C1,C2,C3,C4..........Capacitors for fanmotors

E1H,E2H ................Crankcase heater circuit 1, circuit 2

E3H,E4H ..... ** .......Evaporator heatertape

E5H ...............* .......Field heater

E6H ............. ** .......Buffertank heater

F1,F2,F3....... # .......Main fuses for the unit

F4 ...........................Fuse for I/O PCB and evaporator heatertape

F5 ............... ## .......Surge proof fuse (optional for BMS)

F6 ...............(#) .......Fuse for pumpmotor

F7,F8......................Fuse for fan motor circuit 1, circuit 2

F1U ........................Fuse for I/O PCB

F3U ........................Fuse controller PCB

H3P ...............* .......Indication lamp alarm

H4P ...............* .......Indication lamp operation compressor 1

H5P ...............* .......Indication lamp operation compressor 2

H6P ...............* .......Indication lamp general operation

K1M,K2M ...............Compressor contactor circuit 1, circuit 2

K4S,K5S.................Overcurrent relay circuit 1, circuit 2

K6S ............ (*) .......Overcurrent relay pump

K1P ............ (*) .......Pumpcontactor

M1C,M2C ...............Compressor motor circuit 1, circuit 2

M11F,M12F ............Fanmotors circuit 1

M21F,M22F ............Fanmotors circuit 2

M1P........................Pumpmotor (only P and B models)

PE ..........................Main earth terminal

Q1D,Q2D................Discharge thermal protector circuit 1, circuit 2

Q11F,Q12F ............ Thermal protector fan circuit 1

Q21F,Q22F ............ Thermal protector fan circuit 2

R3T........................ Evaporator inlet water temperature sensor

R4T........................ Evaporator outlet water temperature sensor

R6T........................ Ambient temperature sensor

R7T,R8T ................ Coil temperature sensor for circuit 1, circuit 2

S1HP,S2HP ........... High pressure switch circuit 1, circuit 2

S4LP,S5LP............. Low pressure switch circuit 1, circuit 2

S7S............... * ...... Switch for remote cooling/heating selection or dual setpoint

S9S............... * ...... Switch for remote start/stop or dual setpoint

S10L ...................... Flowswitch

S12M ..................... Main isolator switch

S21P...................... Switch for pump: manual/auto

TR1........................ Transfo 230 V 24 V for supply of controller PCB

TR2........................ Transfo 230 V 24 V for supply of I/O PCB (A2P)

X1~82A/B/M .......... Connectors

Y1R,Y2R................ Reverse valve circuit 1, circuit 2

INSTALLING THE UNIT

SELECTION OF LOCATION

The unit should be installed in a location that meets the followingrequirements:

1 The foundation is to be in such way that it causes no vibrationsor noise when the unit is in operation.

2 The space around the unit is adequate for servicing and theminimum space for air inlet and air outlet is available.

If several units are being installed side by side, the minimumservice space between them must be taken into account.

3 There is no danger of fire due to leakage of inflammable gas.

4 Ensure that water cannot cause any damage to the location byadding water drains to the foundation and prevent water traps inthe construction.

5 Select the location of the unit in such a way that neither thedischarged air nor the sound generated by the unit disturbanyone.

6 Make sure that the air inlet and outlet of the unit are notpositioned towards the main wind direction. Frontal wind willdisturb the operation of the unit. If necessary, use a windscreento block the wind.

7 In heavy snowfall areas, select an installation site where snowwill not affect operation of the unit.

The equipment is not intended for use in a potentially explosiveatmosphere.

Not included with standard unit

Not possible as option Possible as option

Obligatory # ##

Not obligatory * **

( ) Applicable for unit without integrated pump


5EUWA(*)5~24KBZW1



DESCRIPTION DIMENSIONS

For dimensions of the unit, refer to the outlook diagram delivered withthe unit.

INSPECTING AND HANDLING THE UNIT

The units are packed in a wooden crate and attached on a woodenpallet.

At delivery, the unit should be checked and any damage should bereported immediately to the carrier claims agent.

When handling the unit, take into account the following:

1 Fragile, handle the unit with care.

Keep the unit upright in order to avoid compressor damage.

2 Lift the unit preferably with a crane and 2 belts in accordance with theinstruction sticker on the unit.

3 When lifting the unit with a crane, always use protectors to preventbelt damage and pay attention to the position of the unit’s centre ofgravity.

4 Bring the unit as close to its final installation position in its originalpackage to prevent damage during transport.

UNPACKING AND PLACING THE UNIT

1 Remove the wooden crate from the unit.

2 Remove the screws fixing the unit to the pallet.

3 The unit must be installed on a solid longitudinal foundation(steelbeam frame or concrete).

4 Fasten the unit in place using four anchor bolts M12.

5 Make sure that the unit is levelled in both directions.

6 If the unit is operating below –5°C ambient, the unit must beinstalled out of the wind. If this is not possible, a windscreenmust be installed.

IMPORTANT INFORMATION REGARDING THEREFRIGERANT USED

This product contains fluorinated greenhouse gases covered by theKyoto Protocol. Do not vent gases into the atmosphere.

Refrigerant type: R407C

GWP(1) value: 1652.5

(1) GWP = global warming potential

The refrigerant quantity is indicated on the unit name plate.

CHECKING THE WATER CIRCUIT

The units are equipped with a water inlet and water outlet forconnection to a water circuit. This circuit must be provided by alicensed technician and must comply with all relevant European andnational regulations.

Before continuing the installation of the unit, check the followingpoints:

Only for EUWAN version

A circulation pump must be provided in such a way that itdischarges the water directly into the water heat exchanger.

Provide adequate safeguards in the water circuit to make sure thatthe water pressure will never exceed the maximum allowableworking pressure (10 bar).

For all versions

A kit containing 2 ball valves and 1 filter is delivered with the unit.For location of the kit within the unit, refer to the outlook diagramand to the sticker on the frontplate of the unit. Install this kit at thewater inlet of the unit. Refer to figure 3.

Drain taps must be provided at all low points of the system to permitcomplete drainage of the circuit during maintenance or in case ofshut down. A drain plug is provided to drain the water from thechiller water system.

Air vents must be provided at all high points of the system. Thevents should be located at points which are easily accessible forservicing. An automatic air purge is provided on the chiller watersystem.

Take care that the components installed in the field piping canwithstand at least the sum of opening pressure of the safety valve +the static height of the pump.

For EUWAP and EUWAB: 6 bar.

For EUWAN: depending on the selected pump and safetyvalve.

CONNECTING THE WATER CIRCUIT

Water connections must be made in accordance with the outlookdiagram delivered with the unit, respecting the water in- and outlet.

If air, moisture or dust gets in the water circuit, problems may occur.Therefore, always take into account the following when connectingthe water circuit:

1 Use clean pipes only.

2 Hold the pipe end downwards when removing burrs.

3 Cover the pipe end when inserting it through a wall so that no dustand dirt enter.

4 Use a good thread sealant for the sealing of the connections. Thesealing must be able to withstand the pressures and temperatures ofthe system, it must also be resistant to the used glycol in the water.

5 Because brass is a soft material, use appropriate tooling forconnecting the water circuit. Inappropriate tooling will cause damageto the pipes. Refer to figure 3.

Space for air inlet B1/B2

Space for air outlet ≥3 m

Service space

1 Prepare a water drainage channel around thefoundation to drain waste water from around the unit.

2 If the unit is to be installed on a roof, check thestrength of the roof and its drainage facilities first.

3 If the unit is to be installed on a frame, install awaterproofing board with a distance of 150 mmunder the unit in order to prevent infiltration of watercoming from under the unit.

4 In case of indoor installation, make sure to connect adrainhose to the drain connection (Ø16).

Not installing the filter kit can lead to severe damageof the unit.

Be careful not to deform the unit piping by using excessiveforce when connecting the piping. Deformation of thepiping can cause the unit to malfunction.

1 To secure the piping of the chiller

2 To connect the ball valve



6

WATER CHARGE, FLOW AND QUALITY

For all versions

To assure proper operation of the unit a minimum water volume isrequired in the system and the water flow through the evaporatormust be within the operation range as specified in the table.

Only for EUWAP, EUWAB versions

Connecting pressure gauges to the water circuit (field supply)

It is desirable to know the static height over the pump, for regulatingthe water flow (refer to "Pump start up" on page 10). For this reasonyou need to install pressure gauges or a differential pressure gaugeon the pressure ports.

Maximum allowed installation height in function of the water volume

Make sure to respect following limitations:

If the EUWA is installed at the highest point of the system, then thereis no height difference to be considered.

If the EUWA is placed on a height level other than the highest point,refer to figure 7 to read the maximum allowed height difference infunction of the water volume.

e.g.: If water volume=180 l, the maximum allowed installation heightdifference is 9 m.

Setting the pre-pressure of the expansion vessel

The pre-pressure (Pg) on the expansion vessel has to be set beforefilling the system with water or water/glycol solution in function of themaximum installation height difference (H).

Use dry compressed air or nitrogen for this operation.

The pre-pressure (Pg) to be set is calculated as below:

Pg=(H/10+0.3) bar

H=Maximum installation height of the circuit above the EUWA unit (m)

Water quality specifications

Unit (Hp)Minimum water

volume (l)(*)

(*) a = cooling temperature difference (refer to "Defining the cooling temperature differential" on page 15).

Minimum water flow (l/min)

Maximum water flow (l/min)

5 162/a 25 658 255/a 35 10210 324/a 40 12912 378/a 51 15216 264/a 65 21220 333/a 75 26724 396/a 83 317

circulating water supply water

tendency if out of criteria

Items to be controlled

pH at 25°C 6.8~8.0 6.8~8.0 corrosion + scale

Electrical conductivity

[mS/m]at 25°C <40 <30 corrosion + scale

Chloride ion [mg Cl–/l] <50 <50 corrosion

Sulfate ion [mg SO42–/l] <50 <50 corrosion

M-alkalinity (pH 4.8)

[mg CaCO3/l] <50 <50 scale

Total hardness [mg CaCO3/l] <70 <70 scale

Calcium hardness [mg CaCO3/l] <50 <50 scale

Silica ion [mg SiO2/l] <30 <30 scale

Items to be referred to

Iron [mg Fe/l] <1.0 <0.3 corrosion + scale

Copper [mg Cu/l] <1.0 <0.1 corrosion

Sulfide ion [mg S2–/l] not detectable not detectable corrosion

Ammonium ion [mg NH4+/l] <1.0 <0.1 corrosion

Remaining chloride [mg Cl/l] <0.3 <0.3 corrosion

Free carbide [mg CO2/l] <4.0 <4.0 corrosion

Stability index — — corrosion + scale

The chillers are only to be used in a closed water system.Application in an open water circuit can lead to excessivecorrosion of the water piping.

If the water system is drained during some period, rinseout the pump chamber with demineralised water. This toprevent the impeller to be blocked by dried inpurities.

To do this, use the drain tap of the pump. Fill and empty thepump a few times until the removed water is completelyclear. Keep the connections closed to prevent corrosionand dirt entering the water system.

Use of glycol is allowed, but the amount should not exceed40% of the volume. A higher amount of glycol may causedamage to some hydraulic components.

1 2

34

1 Water out

2 Impeller

3 Water in

4 Drain tap


7EUWA(*)5~24KBZW1


Charging water

For all versions

1 Connect the water supply to the drain and fill valve

2 Open the pressure regulating valve (only for EUWAP andEUWAB) and shut-off valves

3 Use the air purge valves on the unit and purge valves installed inthe highest places in the circuit to remove all air when filling thesystem

Only for EUWAP, EUWAB versions

Water must be filled until the system reaches the required

pressure (Pr). The pressure can be read on the manometer.

The value of the required water pressure (Pr) is depending on thetotal water volume in the system and the pressure in the expansionvessel (see previous chapter).

Refer to figure 7 – Required water pressure in function of watervolume and pre-pressure:

1. Calculate the total water volume in the entire system.

2. Check in figure 7 where the horizontal line of the set prepressure(Pg) cuts the vertical line of the system water volume.

3. At the cutting point, read the required water pressure (Pr) from thelines in the figure.

Example 1

Total system water volume=130 l

Highest point of circuit above the EUWA=5 m

Pg=(5/10+0.3)=0.8 bar

Pr=±2.0 bar

Example 2

Total system water volume=190 l

Highest point of circuit above the EUWA unit=5 m

Pg=(5/10+0.3)=0.8 bar

Pr=±1.7 bar

PIPING INSULATION

The complete water circuit, inclusive all piping, must be insulated toprevent condensation and reduction of the cooling capacity.

FIELD WIRING

Parts table

Refer to the wiring diagram supplied with the unit.

Following parts are to be connected during installation:

N ............................Neutral

P.............................Main earth terminal

F1,F2,F3 ................Main fuses (field supply, obligatory)

H3P........................ Indication lamp alarm (field supply, not obligatory)

H5P,H6P................. Indication lamp compr circuit 1, circuit 2 (field supply, not obligatory)

S7S ........................Switch for cool/heat selection or dual setpoint selection (field supply, not obligatory)

S9S ........................Switch for remote start/stop selection or dual setpoint selection (field supply, not obligatory)

E5H........................Field heater (field supply, optional)

X2M (E5H) .............Terminal for field heater connection (optional)

--- ...........................Field wiring

Power circuit and cable requirements

A power circuit must be provided for connection of the unit. Thiscircuit must be protected with the required safety devices, i.e. a slowblow fuse on each phase and an earth leak detector. For maximumcable section (mm2) refer to the table.

Connection of the power supply

1 Using the appropriate cable, connect the power circuit to the N,L1, L2 and L3 terminals of the main switch as shown on thewiring diagram.

2 Connect the earth conductor (yellow/green) to the earthingterminal PE.

A Water volume (l)

B Installation height difference (m)

C Pre-pressure

D Factory setting (1.5 bar)

NOTE In this example it is allowed to keep the pre-pressurefactory setting from 1.5 bar. In this case the initialwater-pressure must be ±2.2 bar

NOTE In this example it is not allowed to keep the pre-pressure factory setting from 1.5 bar.

NOTE A terminal is foreseen in the switchbox on which aheater (tape) can be connected for preventing the waterpiping from freezing during the cold weather months.Refer to the wiring diagram supplied with the unit.

All field wiring and components must be installed by alicensed electrician and must comply with relevant Euro-pean and national regulations.

The field wiring must be carried out in accordance with thewiring diagram supplied with the unit and the instructionsgiven below.

Be sure to use a dedicated power circuit. Never use apower supply shared by another appliance.

Description Legend 5~24 Hp

Powerlines L1, L2, L3, N 10

Main earth cable PE 10

NOTE Select the power cable in accordance with relevantlocal and national regulations.

Switch off the main isolator switch before making anyconnections.

For units equipped with freeze protection:

Keep in mind that the heaters are automatically switchedoff when the main isolator switch is switched off. For thisreason the main switch should be switched on during thecold weather months.



8


Point for attention regarding quality of the publicelectric power supply

This equipment complies with EN/IEC 61000-3-11(1) provided thatthe system impedance Zsys is less than or equal to Zmax at theinterface point between the user's supply and the public system. It isthe responsibility of the installer or user of the equipment to ensure,by consultation with the distribution network operator if necessary,that the equipment is connected only to a supply with a systemimpedance Zsys less than or equal to Zmax.

Only for EUWAN+P+B8~24: Equipment complying with

EN/IEC 61000-3-12(2)

OPERATING THE UNIT

BEFORE OPERATION

Checks before initial start-up

After the installation of the unit, check the following before switchingon the circuit breaker:

1 Field wiring

Make sure that the field wiring between the local supply paneland the unit has been carried out according to the instructionsdescribed in the the chapter "Field wiring" on page 8, accordingto the wiring diagrams and according to European and nationalregulations.

2 Fuses or protection devices

Check that the fuses or the locally installed protection devicesare of the size and type specified in the chapter "Electricalspecifications" on page 4. Make sure that neither a fuse nor aprotection device has been bypassed.

3 Earth wiring

Make sure that the earth wires have been connected properlyand that the earth terminals are tightened.

4 Internal wiring

Visually check the switch box on loose connections or damagedelectrical components.

5 Fixation

Check that the unit is properly fixed, to avoid abnormal noisesand vibrations when starting up the unit.

6 Damaged equipment

Check the inside of the unit on damaged components orsqueezed pipes.

7 Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is arefrigerant leak, call your local Daikin dealer.

8 Oil leak

Check the compressor on oil leakage. If there is an oil leak, callyour local Daikin dealer.

9 Air inlet/outlet

Check that the air inlet and outlet of the unit is not obstructed bypaper sheets, cardboard, or any other material.

10 Power supply voltage

Check the power supply voltage on the local supply panel. Thevoltage must correspond to the voltage on the identification labelof the unit.

11 Ball valve and filter kit

Make sure that the ball valve and filter kit are correctly installed.

12 Pressure regulating valve and shut-off valve

Check that the pressure regulating valve (only for EUWAP andEUWAB) and the shut-off valves are fully open.

Water supply

Fill the water piping, taking into account the minimum water volumerequired by the unit. Refer to the chapter "Water charge, flow andquality" on page 7.

Make sure that the water is of the quality as mentioned in the chapter"Water quality specifications" on page 7.

Purge the air at the high points of the system (automatic air purgeinside the chiller) and check the operation of the circulation pump andthe flow switch.

Power supply connection and crankcase heating

To switch on the crankcase heater proceed as follows:

1 Switch on the main switch of the unit. Make sure that the unit is“OFF”.

2 The crankcase heater is switched on automatically.

3 Check the supply voltage on the supply terminals L1, L2, L3, (N)by means of a voltmeter. The voltage must correspond to thevoltage indicated on the identification label of the unit.

If the voltmeter reads values which are not within the rangesspecified in the technical data, check the field wiring and replacethe supply cables if necessary.

4 Check the service leds H1P and H2P on the I/O PCB (A2P).

If the H1P led is off and the H2P is on, then the phase order isnot correct. Switch off the main switch and call a licensedelectrician to connect the wires of the power supply cable in thecorrect phase order.

After six hours, the unit is ready for operation.

(1) European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current ≤75 A.

Zmax (Ω)

EUWAN+P+B5 0.26

EUWAN+P+B8 0.22

EUWAN+P+B10 0.22

EUWAN+P+B12 0.21

EUWAN+P+B16 0.21

EUWAN+P+B20 0.21

EUWAN+P+B24 0.20

(2) European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase.

Make sure that the main switch of the unit is switched off.

Operating the system with closed valves will damagethe pump.

In order to avoid compressor damage, it is necessary toswitch on the crankcase heater for at least six hoursbefore starting the compressor after a long period of stand-still.


9EUWA(*)5~24KBZW1



Pump start up (only for EUWAP and EUWAB)

1 Turn the pump switch to manual. The pump must run now.

2 Set the desired flow by turning the pressure regulating valve.

3 Put the switch to auto. The pump will stop.

4 Switch the chiller on. The pump will be started by the chiller.

Detailed instructions for switching the unit on and operating theunit, can be found in the chapter "Working with the units" onpage 11.

5 Check if the ∆t of the chiller is within expectations. If necessary,regulate the flow by using the pressure regulating valve.

Figures pressure characteristics- Pump characteristics (See figure 4)

- External static pressure (See figure 5)

- Pressure drop curves evaporators (See figure 6)

OPERATION

The units are equipped with a digital controller offering a user-friendlyway to set up, use and maintain the unit.This part of the manual has a task-oriented, modular structure. Apartfrom the first section, which gives a brief description of the controlleritself, each section or subsection deals with a specific task you canperform with the unit.

Digital controller

User interface

The digital controller consists of a numeric display, four labelled keyswhich you can press and LEDs providing extra user information.

Figure - Digital controller

Figure - Remote user interface (optional kit)

NOTE The desired flow is depending on the capacity of thechiller and the desired temperature differencebetween water inlet and outlet (∆t).

If manometers are installed, the flow can bededuced from the pressure difference over thepump. For pump and resistance characteristics, refer toparagraph "Figures pressure characteristics" onpage 10.

1 pump 5, 8 Hp 4 pump 5, 8, 10 Hp (optional)

2 pump 10, 12 Hp 5 pump 12, 16, 20, 24 Hp (optional)

3 pump 16, 20, 24 Hp

1 EUWAP5, EUWAB5 5 EUWAP16, EUWAB16



4 EUWAP12, EUWAB12

1 EUWA(*)5 5 EUWA(*)16

2 EUWA(*)8 6 EUWA(*)20

3 EUWA(*)10 7 EUWA(*)24

4 EUWA(*)12



10


Keys provided on the controller:

The function carried out when the user presses one or a combinationof these keys depends on the status of the controller and the unit atthat specific moment.

LEDs provided on the controller and remote interface:

Function during main display (not inside menu)

When selecting a parameter group or parameter, different LEDsrelated to the parameter group or parameter are displayed.

Example: The LEDs F and G are displayed when accessing aparameter group or when accessing parameters directly.

Direct and user parameters

The digital controller provides direct and user parameters. The directparameters are important for the everyday usage of the unit, e.g. toadjust the temperature setpoint or to consult actual operationalinformation. The user parameters on the contrary provide advancedfeatures such as adjusting time delays.

Each parameter is defined by a code and a value. For example: theparameter used to select local or remote on/off control has codeh07 and value 1 or 0.

For an overview of the parameters, refer to "Overview of the directand user parameters" on page 14.

Working with the units

This chapter deals with the everyday usage of the units. Here, youwill learn how to perform routine tasks, such as:

"Switching the unit on" on page 12 and "Switching the unit off"on page 12,

"Adjusting the cooling temperature setpoint" on page 12,

"Consulting actual operational information" on page 13,

"Resetting alarms" on page 13,

"Resetting warnings" on page 13.

Keys digital controller

Keys remote interface Main display Sensor readout menu Parameter selection menu Parameter setting menu

A T— Press once:

ReturnPress once:

ReturnPress once:

Cancel and return

B U

Press for 5 seconds: To be able to access DIRECT parameters

—Press once:

Select parameter group or parameter

Press once: Confirm and return

A + B S

Press for 5 seconds: A + B ORPress once:S

To be able to access USER parameters (after entering USER password)

—

C C

Press for 5 seconds: Has no effect on these units.Press once: Direct access to readout menu sensor(b01/b02/b03)

Press once: Select previous sensor

parameter

Press once: Select previous parameter

group or parameter

Press once: Increase value

D D

Press for 5 seconds: Switch unit on/off in cooling modePress once: Direct access to readout menu sensor(b01/b02/b03)

Press once: Select next sensor

parameter

Press once: Select next parameter group

or parameter

Press once: Decrease value

C + D R

Press for 5 seconds:Manually alarm reset in the event of alarm

—

Leds digital controllerRemote interface Main display

P Led (green) Z Inlet water temperature.

F Led (amber) F Not active.

G Led (amber) GIndicates that cooling mode is active.

H Led (red) YIndicates that the alarm is active.

L Led (amber) LIndicates the status of the pump

M Led (amber) MLED, indicates that at least one compressor is active.

& Led (amber) &

LED is on, indicates that compressor 1 is active.LED is flashing, indicates compressor 1 startup request.

é Led (amber) é

LED is on, indicates that compressor 2 is active.LED is flashing, indicates compressor 2 startup request.

NOTE Temperature readout tolerance: ±1°C.

Legibility of the numeric display may decrease in directsunlight.


11EUWA(*)5~24KBZW1



Switching the unit on

To switch the unit on in cooling mode, proceed as follows:

1 Press the D key for approximately 5 seconds, the G LED willbe displayed.

Then an initialization cycle is started, the L LED, the M LED, the &LED and the é LED will light up depending on the programmedthermostat function.

In case the & LED or the é LED is flashing, it indicates that there is acompressor 1 or 2 startup request. The compressor will start after thetimer has reached zero.

2 When the unit is started up for the first time, or when the unit hasbeen out of operation for a longer period, it is recommended togo through the following checklist.

Abnormal noise and vibrations

Make sure the unit does not produce any abnormal noises orvibrations: check the fixations and piping. If the compressormakes any abnormal noises, this may also be caused by anovercharge of refrigerant.Working pressure

It is important to check the high and low pressure of therefrigerant circuit to ensure the proper operation of the unit andto guarantee that the rated output will be obtained.

3 If the unit does not start after a few minutes, consult the actualoperational information available in the list of direct parameters.Also refer to the chapter "Troubleshooting" on page 18.

Switching the unit off

To switch the unit off and cooling mode is active, proceed as follows:

1 Press the D key for approximately 5 seconds, the G LED willbe extinguished.

How to consult and modify the direct parameters

For an overview of the menu structure, refer to "Menu overview" onpage 21.

1 Press B for 5 seconds in the main display. The -/- parameter group is displayed.

2 Press the C or D key to select the required parametergroup.

3 Press the B key to enter the selected parameter group.

4 Press the C or D key to select the required parameter.

5 Press the B key to consult the selected parameter.

6 Press the C or D key to raise, respectively lower thesetting of the selected parameter. (Only valid for read/writeparameters.)

7 Press the B key to confirm the modified setting.ORPress the A key to cancel the modified setting.

8 Press the A key to return to the parameter group.

9 Press 2 times the A key to return to the main display.

If during the procedure no buttons are pressed for 30 seconds, thedisplayed parameter code or value will start flashing. After another30 seconds without pressing any buttons, the controller automaticallyreturns to the main display without saving any modified parameter.

How to consult the "sensor readout menu" parameters

For an overview of the menu structure, refer to "Menu overview" onpage 21.

The b01/b02/b03 parameters are part of the "sensor readoutmenu".

1 Press the C or D key in the main display.

The b01 parameter is displayed.In case no buttons are pressed, the value of the b01 sensor willbe displayed until C or D is pressed again to selectanother parameter (b02 or b03).

2 Press the A key to return to the main display.

If during the procedure no buttons are pressed for 30 seconds, thedisplayed parameter code or value will start flashing. After another30 seconds without pressing any buttons, the controller automaticallyreturns to the main display.

Adjusting the cooling temperature setpoint

1 Modify the r1 cooling setpoint parameter.

This is a direct parameter, refer to "How to consult and modify thedirect parameters" on page 12.

NOTE If remote on/off control is enabled, refer to "Selectinglocal or remote on/off control" on page 16.

The pressures measured will vary between a maximumand minimum value, depending on the water and outdoortemperatures (at the moment of measurement).

Cooling mode Minimum Nominal Maximum

( –5°C) ( 35°C) ( 38°C)

(LW 4°C) (LW 7°C) (LW 20°C)

Low pressure 3 bar 4 bar 6.5 barHigh pressure 7 bar 21 bar 24 bar

outdoor temperature LW leaving water temperature

NOTE In case of remote on/off control (h07=1), it is recom-mended to install an on/off switch near the unit inseries with the remote switch. The unit can then beswitched off from either place.

NOTE If remote on/off control is enabled, refer to "Selectinglocal or remote on/off control" on page 16.

NOTE When dual setpoint is enabled (refer to "Selecting dualsetpoint control" on page 16).



12


Consulting actual operational information

The actual operational information that can be consulted in the list ofdirect parameters consists of:

b01: Evaporator inlet water temperature,

b02: Evaporator outlet water temperature,

b03: Not used,

c10: Total running hours of the compressor 1,

c11: Total running hours of the compressor 2,

c15: Total running hours of the pump.

These are direct parameters, refer to "How to consult and modify thedirect parameters" on page 12.

Resetting alarms

When an alarm is detected, the following happens:

the alarm relay is energized,

the H LED is displayed

the display starts flashing, alternately showing the alarm codeand the inlet water temperature.

The following alarm codes may appear on the screen:

a1: indicates an anti-freeze alarm.

e1: indicates that the NTC probe used to measure theevaporator inlet water temperature is defective.

e2: indicates that the NTC probe used to measure theevaporator outlet water temperature is defective.

e3: indicates that the fuse for the evaporator heatertape (F4)is blown or that there is a reverse phase error or that thereis a problem with the I/O PCB (A2P).

ehs: indicates that the supply voltage is exceedingly high. Inthis case contact a licensed electrician.

el1: indicates that there is a power supply error (example:noise). In this case contact a licensed electrician.

el2: indicates that there is a power supply error (example:noise). In this case contact a licensed electrician.

els: indicates that the supply voltage is exceedingly low. In thiscase contact a licensed electrician.

epb: indicates that the EEPROM on the controller PCB insidethe unit is defective.

epr: indicates that the EEPROM on the controller PCB insidethe unit is defective.

fl: indicates that there was no sufficient water flow eitherduring the period of 15 seconds after the pump wasstarted or for 5 seconds while the compressor is active orthat the overcurrent protection of the pump is activated.

hp1: indicates that a high pressure switch, the dischargethermal protection or the overcurrent protection of thecompressor motor is activated or that the NTC probe usedto measure the ambient temperature is defective.

fl + hp1: indicates that there is most likely an RPP error or that theF4 fuse is blown.

lp1: indicates that the low pressure switch is activated.

ter: indicates that there is a remote user interfacecommunication error.

: communication failure between the digital controller of theunit and the remote user interface. Confirm the correctselection of parameter code h23. This should be defaultsetting 0 and confirm the correction installation accordingto the installation manual of the remote user interfaceEKRUMCA.

To reset an alarm, proceed as follows:

1 Find the cause of shutdown and correct.

Refer to the chapter "Troubleshooting" on page 18.

2 If the alarm codes a1, fl, hp1 or lp1 appear on the display,reset the alarm manually by pressing the E combination keysC and D simultaneously for approximately 5 seconds.

In all other cases the alarm is reset automatically.

Once the alarm is reset, the error code and the H LED no longerappears on the display. The controller continues its normaloperation, displaying the inlet water temperature.

Resetting warnings

During normal operation, the display of the controller may startflashing, alternately showing the inlet water temperature and thefollowing warning code:

hc1: indicates that the compressor 1 requires maintenance:the total running hours of the compressor 1 (directparameter c10) has exceeded the setting of the timerthreshold for maintenance warning (user parameterc14).

hc2: indicates that the compressor 2 requires maintenance:the total running hours of the compressor 2 (directparameter c11) has exceeded the setting of the timerthreshold for maintenance warning (user parameterc14).

To reset the maintenance warning hc1 or hc2, proceed as follows:

1 Consult c10 running hours of compressor 1 or c11 runninghours of compressor 2.These are direct parameters, refer to "How to consult and modifythe direct parameters" on page 12.

2 When c10 or c11 parameter value is displayed, press theC and D key simultaneously for 5 seconds. The value ofthe timer becomes 0 and the warning is reset.

NOTE The parameters b01, b02 and b03 can also beconsulted by the "sensor readout menu". Refer to"How to consult the "sensor readout menu"parameters" on page 12.

To reset the timers of parameters c10, c11 andc15 refer to "Resetting warnings" on page 13.

In case the unit is equipped with freeze protection, it ishighly recommended to install the remote indicatorlamp alarm (H3P) (see wiring diagram supplied withthe unit). By doing so, breakdown of the fuse for theevaporator heatertape (F4) will be detected soonerand freezing of the circuit will be avoided during coldweather.

NOTE If the alarm codes fl and h1 are flashing alternately,the alarm is most probably caused by the reversephase protector or by the fuse for evaporator heater-tape (F4) that was blown.

NOTE Do not forget to carry out the required maintenanceactivities after resetting the timers.

Besides resetting timer c10 and c11, it is alsopossible to reset timer c15 (running hours of pump)in the same way.


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Advanced features of the digital controller

This chapter gives an overview of the direct parameters and userparameters provided by the controller. In the following chapter, youwill learn how you can set up and configure the unit using theseparameters.

Overview of the direct and user parameters

The list of direct parameters is accessible by pressing the B keyfor approximately 5 seconds. Refer also to "How to consult andmodify the direct parameters" on page 12.

Parameter group

Parameter code Description

Default value Min Max Units

Read/Write

User/Direct

Modbus Address

Parameter type(*)

(*) D=digital, A=analog, I=integer.

-/- /23 Measurement unit 0=°C 1=°F 0 0 1 R/W U 5 D

-a- No user or direct parameters accessible

-b-

b01 Evaporator inlet water temperature 0.1°C R D 102 A

b02 Evaporator outlet water temperature 0.1°C R D 103 A

b03 Not used 0.1°C R D 104 A

-c-

c07Time delay between pump startup and compressor startup 15 0 999 1 sec R/W U 238 I

c08Time threshold between the unit shutdown and the pump shutdown 0 0 150 1 min R/W U 239 I

c10 Total running hours of compressor 1 x100 hours R D 122 A

c11 Total running hours of compressor 2 x100 hours R D 123 A

c14Maintenance threshold for maintenance warning (c10 and c11) 0 0 100 x100 hours R/W U 241 I

c15 Total running hours of pump x100 hours R D 126 A

-d- No user or direct parameters accessible

-f- No user or direct parameters accessible

-h-

h07

To activate remote on/off control0=not active1=active(only in case p34=23)

0 0 1 R/W U 15 D

h09

To lock the controller keyboard0=lock 1=unlock

1 0 1 R/W U 16 D

h10 Serial address for BMS connection 1 1 200 R/W U 256 I

h23

To select address card connection0=remote user interface connection1=MODBUS connection

0 0 1 R/W U 11 D

-p-

p09

Changeable digital input selection S7S0=no function13=remote dual setpointDO NOT SELECT OTHER VALUES

9 0 27 R/W U 277 I

p34

Changeable digital input selection S9S0=no function13=remote dual setpoint23=remote on/off (only active in combination with h07)DO NOT SELECT OTHER VALUES

23 0 27 R/W U 329 I

-r-

r01 Cooling setpoint 12.0 7.0(†)

(†) –2.0 and –7.0 only applicable for units with glycol applications.

25.0 0.1°C R/W D 41 A

r02 Cooling difference 3.0 0.3 19.9 0.1°C R/W D 42 A

r21 Cooling setpoint 2(‡)

(‡) Used in case dual setpoint is enabled in p09 or p34 and dual setpoint digital input is closed.

12.0 7.0(†) 25.0 0.1°C R/W D 55 A

-t- No user or direct parameters accessible

f-r h99 Software release version R D 208 I



14


How to consult and modify the user parameters

For an overview of the menu structure, refer "Menu overview" onpage 21.

1 In case of digital controller, press the A and B keys forapproximately 5 seconds until O is displayed.In case of remote user interface, push S once.

2 Enter the correct password by using the C and D keys.The password’s value is 22.

3 Press the B key to confirm the password and to enter themenu, s-p is displayed.

4 Press the B key to consult the parameter settings (=s-p).(l-p means consulting the parameter level, but this function isnot used).The -/- parameter group is displayed.

5 Press the C or D key to select the required parametergroup.

6 Press the B key to enter the selected parameter group.

7 Press the C or D key to select the required parameter.

8 Press the B key to consult the selected parameter.

9 Press the C or D key to increase, respectively decreasethe setting. (Only valid for read/write parameters.)

10 Press the B key to confirm the modified setting.ORPress the A key to cancel the modified setting.

11 Press the A key to return to the parameter group.

12 Press 2 times the A key to return to the main display.

If during the procedure no buttons are pressed for 30 seconds, thedisplayed parameter code or value will start flashing. After another30 seconds without pressing any buttons, the controller automaticallyreturns to the main display without saving any modified parameter.

Defining the cooling temperature differential

Modify the r02 cooling differential parameter.

This is a direct parameter, refer to "How to consult and modify thedirect parameters" on page 12.

Tasks carried out using user parameters

Defining the measurement unit

Depending on the setting of user parameter /23 (measurementunit), all temperature values are displayed in °C (=0) or in °F (=1).

This is a user parameter, refer to "How to consult and modify the userparameters" on page 15.

Defining the time delay between pump and compressor startup

User parameter c07 allows you to define the time delay between thepump startup and the compressor startup.


Defining the time delay between unit and pump shutdown

User parameter c08 allows you to define the time delay between theunit shutdown and the pump shutdown, more specifically the periodduring which the pump will still be active after the unit has been shutdown.


Defining the timer threshold for maintenance warning

User parameter c14 allows you to define a timer threshold (runninghours of the compressor) after which the controller will generate amaintenance warning or request.


NOTE When user parameters are consulted, the directparameters are displayed as well.

for 1 compressor

for 2 compressors

°C

r01/r21

r02

12 15 inlet watertemperature of

evaporator

ON

OFF

compressor

°C

r01/r21

r02

12 13.5 15 inlet watertemperature of

evaporator

ON

OFF ON

compressor

OFF


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Selecting local or remote on/off control

User parameter h07 in combination with the remote on/off switch(installed by the customer) allows the user to switch the unit onwithout using the D or C key on the controller.

When user parameter h07 is set to 0 (=not active), the unit canonly be switched on by means of the D and C key on thecontroller.

When user parameter h07 is set to 1 (=active), the unit can beswitched on or off as follows:

When remote on/off switch is opened, then the unit isswitched off and it is not possible to switch the unit on/offwhile pressing the D or C key on the controller (5 sec).

When remote on/off switch is closed, then the unit isswitched on and it is possible to switch the unit on/off whilepressing the D or C key on the controller (5 sec).


Selecting dual setpoint control

User parameters p09 (changeable digital selection S7S) and p34

(changeable digital selection S9S) can be used to assign the dualsetpoint control to S7S or S9S.

There are 2 different controls available for 2 different change digitalinputs (S7S and S9S):

p09: changeable digital input selection S7S

0=no function

13=remote dual setpoint

p34: changeable digital input selection S9S

0=no function

13=remote dual setpoint

23=remote on/off

When dual setpoint switch is open, the first setpoint is activated (r01

cooling setpoint).

When dual setpoint switch is closed, the second setpoint is activated(r21 cooling setpoint 2).


Locking the controller keyboard

Once user parameter h09 is set to 0, the following advancedfeatures can no longer be carried out by means of the controller:

modifying direct and user parameters (parameters can bedisplayed but not modified),

resetting the timers.

switching the unit on/off in cooling or heating

When user parameter h09 is set to 1, the above-describedadvanced features can be carried out using the controller.

To modify user parameter h09 value from 1 to 0, the standard userparameter modification procedure can be used with the standardpassword "22". Refer to "How to consult and modify the userparameters" on page 15.

To modify user parameter h09 value from 0 to 1, the userparameter modification procedure can be used with dedicatedpassword "11". Refer to "How to consult and modify the userparameters" on page 15.

BMS CONNECTION MODBUS

By installing the optional kit address card EKAC10C, you will be ableto communicate with your chiller through a Building ManagementSystem or supervisory system via the Modbus protocol.

General description of Modbus

The address card communicates using the Modbus protocol.

Different parts of the communication network

The communication network consists of two major players:

The Building Management System (BMS) or supervisorysystem.

The chiller or multiple chillers.

The BMS or other supervisory system is able to communicatewith the chillers through the address card.The management of the communication occurs in accordancewith a master-slave structure in polling, where the supervisingBMS is the master and the address cards are the slaves.

The chiller unit can be identified by the supervisor through theassignment of an address within the Modbus network. Theaddress of the chiller unit can be programmed during theconfiguration of the BMS settings.

The variables database of every chiller with installed addresscard is the point of reference for the supplier of the supervisorysystem in Modbus to assign a suitable meaning to the variables.The variables can be read and/or written by the supervisorysystem. Whether the variables are read-only or read/writedepends on the connected chiller and/or the application programbeing used.- If the supervisory system assigns a value to a variable with

read-only status, the command will not be executed at all.- Variables requested by the supervisory system that are not

available in a chiller with an address card are sent from the address card to the supervisory system with zero value. The supervisory system will have to manage these properly.

- In case the supervisory system tries to write a value of a parameter that is out of range, the writing will be ignored.

NOTE This is only in case p34 (changeable digital inputselection S9S) has value 23 (default value).

In case dual setpoint function is selected for thisfunction (p34=13) then the remote on/off controlis not activated.



16


General information about the Modbus protocol

The Modicon Modbus protocol implemented in the address cardcomplies with the content of the following document:

Modicon Modbus ProtocolReference Guide

June 1996, PI-MBUS-300 Rev. J

The Modbus protocol implemented is of the RTU (Remote TerminalUnit) type based on character tranmission times. The configurationuses the multi-drop feature of RS485. The address sent within theModbus packet addresses the chiller unit.

Implemented RS485 communication settings for the Modbus protocol

The RS485 communication settings are implemented as follows:

Baud-rate: 9600

Stop bit: 2

Parity: none

Implemented commands for the Modbus protocol

The implemented commands in the program are as listed:

Note that:

Due to the variety of chillers with installed address cards, nodistinction is made between input variables (with read-onlystatus) and output variables (with read/write status) so that theknowledge of the database and its management depends on thepart present on the supervisory system.

Due to the general nature of the system, the address cardanswers in the same way to various Modbus commands.

Data representation of the Modbus protocol

DigitalAll digital data is coded by a single bit:

"0" for OFF

"1" for ON.

All digital variables are assigned to bits of consecutive registers,each one having:

the lower-address variable assigned to the less significant bit

the higher-address variable assigned to the most significantbit.

Analogue and integer dataAn analogue and integer value is represented by a 16-bit WORDregister in binary notation. For each register, the first bytecontains the high order bits and the second byte contains thelow order bits.

The analogue variables are represented in tenths:for example, the value 10.0 is transmitted as 0064h=100dfor example, the value –10.0 is transmitted as FF9Ch=–100d

The integer variables are transferred using the effectivevalue:for example, the value 100 is transmitted as 0064h=100d

The address card operates on registers where one register mustbe considered at 16-bit.

In case the BMS or supervisory system tries to write a value of aparameter that is out of range, the writing will be ignored.

Implemented error code

Defining the BMS setting

Activating the Modbus protocol

The Modbus protocol is activated by setting the h23 parameter to 1.


Defining the unit’s serial address

To define each unit’s unique serial address required forcommunication with the supervisionary system, set parameter h10.


Modbus command Meaning Notes

01 read coil status Read digital variable(s)

obtains current status (ON/OFF) of a group of logic coils or discrete input

02 read input status

Read digital variable(s)

obtains current status (ON/OFF) of a group of logic coils or discrete input

03 read holding registers

Read analogue variable(s)

obtains current binary value in one or more holding registers

04 read input registers

Read analogue variable(s)

obtains current binary value in one or more holding registers

05 force single coil Write individual digital variable(s)

forces single coil to ON or OFF status

06 preset single register

Write individual analogue variable(s)

places a specific binary value into a holding register

15 force multiple coils

Write series of digital variables

forces a series of consecutive logic coils to be defined to ON or OFF status

16 preset multiple registers

Write series of analogue variables

places specific binary values into a series of consecutive holding registers

Code Modbus interpretation Condition

1 Illegal function Message is not supported or the number of variables required is greater than the allowed limit (length ≤20)


17EUWA(*)5~24KBZW1



Variables database

The BMS or supervisory system and the chiller unit communicatethrough a fixed set of variables, also called address numbers.Hereafter, you will find the information you need about the digital,integer and analogue variables that the BMS or supervisory systemcan read from or write to the address card of the chiller.

For addresses of all the direct and user parameters refer to"Overview of the direct and user parameters" on page 14.

Overview of all variables which are not direct or user parameters

TROUBLESHOOTING

This section provides useful information for diagnosing andcorrecting certain troubles which may occur in the unit.

Before starting the trouble shooting procedure, carry out a thoroughvisual inspection of the unit and look for obvious defects such asloose connections or defective wiring.

Before contacting your local Daikin dealer, read this chapter carefully,it will save you time and money.

When a safety device was activated, stop the unit and find out whythe safety device was activated before resetting it. Under nocircumstances safety devices may be bridged or changed to a valueother than the factory setting. If the cause of the problem cannot befound, call your local Daikin dealer.

Symptom 1: The unit does not start, but the L LED lights up

Symptom 2: The unit does not start, but the L LED is flashing

Symptom 3: The unit does not start and the L LED does not light up

DescriptionModbus address

Parameter type(*)

(*) D=digital.

Circuit alarm1=A1, HP1, or LP1 alarm codes active

0=no alarm code active

Read only 41 D

General alarm 1=FL alarm code0=no alarm code active

Read only 45 D

NTC Probe alarm1=E1, E2, or E3 alarm

codes0=no alarm code active

Read only 46 D

Input of flowswitch alarm

1=closed0=open

Read only 53 D

Input of changeable digital

S7S input

1=closed0=open

Read only 54 D

Input of high pressure or

discharge protector or overcurrent

alarm

1=closed0=open

Read only 55 D

Input of low pressure switch

alarm

1=closed0=open

Read only 56 D

Input of changeable digital

S9S input

1=closed0=open

Read only 57 D

Output of compressor 1

1=on0=off

Read only 59 D

Output of compressor 2

1=on0=off

Read only 60 D

Output of pump 1=on0=off

Read only 61 D

Output of reversing valve

1=on0=off

Read only 62 D

Output of alarm 1=on0=off

Read only 63 D

On or off 1=on0=off

Read/write 64 D

When carrying out an inspection on the switch box of theunit, always make sure that the main switch of the unit isswitched off.

POSSIBLE CAUSES CORRECTIVE ACTION

The temperature setting is not correct.

Check the controller setpoint.

Power supply failure. Check the voltage on the supply panel.

Blown fuse or interrupted protection device.

Inspect fuses and protection devices. Replace by fuses of the same size and type (refer to chapter "Electrical specifications" on page 4).

Loose connections. Inspect connections of the field wiring and the internal wiring of the unit. Tighten all loose connections.

Shorted or broken wires. Test circuits using a tester and repair if necessary.


The remote ON/OFF input is enabled and the remote switch is off.

Put the remote switch on or disable the remote ON/OFF input.

The anti-recycling timer is still active. The cicuit can only start up after approximately 4 minutes.

The guard timer is still active. The circuit can only start up after approximately 1 minute.


One of the following safety devices is activated:• Reverse phase protector• Overcurrent relay (K*S)• Discharge thermal protector (Q*D)• Evaporating temperature• Thermostat (S*T)• Flow switch (S10L)• High pressure switch (S*HP)

Check on the controller and refer to symptom 4 "One of the following safety devices is activated" on page 19. Refer to the explanation of the digital controller in the chapter "Resetting alarms" on page 13.

The unit is in anti-freeze alarm. Check on the controller and refer to symptom 4 "One of the following safety devices is activated" on page 19. Refer to the explanation of the digital controller in the chapter "Resetting alarms" on page 13.

The remote ON/OFF input is enabled and the remote switch is off.

Put the remote switch on or disable the remote ON/OFF input.

The keyboard is locked. The user parameter h09 is set to 0.

Unlock the controller keyboard.



18


Symptom 4: One of the following safety devices is activated

Symptom 5: Unit stops soon after operation

Symptom 6: Unit runs continuously and the water temperature remains higher, respectively lower than the temperature set on the controller

Symptom 7: Excessive noises and vibrations of the unit

Symptom 8: Water flow is too low

Symptom 9: Pump is making noise (cavitation)

Symptom 4.1: Overcurrent relay of compressor


Failure of one of the phases. Check fuses on the supply panel or measure the supply voltage.

Voltage too low. Measure the supply voltage.

Overload of motor. Reset. If the failure persists, call your local Daikin dealer.

RESET Push the red button on the over-current relay inside the switch box. The controller still needs to be reset.

Symptom 4.2: Low pressure switch


Water flow to water heat exchanger too low.

Increase the water flow.

Shortage of refrigerant. Check for leaks and refill refrigerant, if necessary.

Unit is working out of its operation range.

Check the operation conditions of the unit.

Inlet temperature to the water heat exchanger is too low.

Increase the inlet water temperature.

Flow switch is not working or no water flow.

Check the flow switch and the water pump.

RESET After pressure rise, the low pressure switch resets automatically, but the controller still needs to be reset.

Symptom 4.3: High-pressure switch


Condenser fan does not operate properly.

Check that the fans turn freely. Clean if necessary.

Dirty or partially blocked condenser. Remove any obstacle and clean condenser coil using brush and blower.

Inlet air temperature of the condenser is too high.

The air temperature measured at the inlet of the condenser may not exceed 43°C.

RESET After pressure decrease, the high pressure switch resets automatically, but the controller still needs to be reset.

Symptom 4.4: Fan thermal protector is activated


Mechanical failure (fan is blocked). Check that the fan rotates freely.

Air flow in the unit too low or outdoor temperature too high.

Clean the air heat exchanger properly.

RESET After temperature decrease, the thermal protector is reset automatically.

If the protector is activated frequently, replace the motor or call your local Daikin dealer.

Symptom 4.5: Reverse phase protector is activated


Two phases of the power supply are connected in the wrong phase position.

Invert two phases of the power supply (by licensed electrician).

One phase is not connected properly.

Check the connection of all phases.

RESET After inverting two phases or fixing the power supply cables properly, the protector is reset automatically, but the controller still needs to be reset.

Symptom 4.6: Discharge thermal protector is activated


Unit is working outside the operation range.

Check the operation condition of the unit.

RESET After temperature decrease, the thermal protector resets automatically but the controller still needs to be reset.

Symptom 4.7: Flow switch is activated


Water flow too low. Check the water pump.

RESET After finding the cause, the flow switch is reset automatically, but the controller still needs to be reset.


One of the safety devices is activated.

Check safety devices (refer to "One of the following safety devices is activated" on page 19).

Voltage is too low. Test the voltage in the supply panel and, if necessary, in the electrical compartment of the unit (voltage drop due to supply cables is too high).


The temperature setting on the controller is too low.

Check and adjust the temperature setting.

The heat production in the water circuit is too high.

The cooling capacity of the unit is too low. Call your local Daikin dealer.

Water flow is too high. Recalculate the water flow.


Unit has not been fixed properly. Fix the unit as described in the installation manual.


Shut-off valve is not completely open.

Open the shut-off valve completely.

There is air in the system. Purge the air.

The filter is not clean. Clean the filter.

There is an obstruction in the circuit. Remove the obstruction.

Pressure regulating valve is not enough open.

Open more.

The chosen pump has not enough capacity.

Check ∆p over pump.Install heavier pump.


Shut-off valve is not completely open.

Open completely.

There is air in the system. Purge air.

The filter is not clean. Clean filter.

Pre-pressure and required water pressure are not according to installation instructions or expansion vessel is broken.

Recalculate the values as described in chapter "Setting the pre-pressure of the expansion vessel" on page 7 and "Charging water" on page 8.


19EUWA(*)5~24KBZW1



MAINTENANCE

In order to ensure optimal availability of the unit, a number of checksand inspections on the unit and the field wiring have to be carried outat regular intervals.

If the unit is used for air conditioning application, the describedchecks must be executed at least once a year. In case the unit isused for other applications, the checks must be executed every 4months.

Important information regarding the refrigerant used

This product contains fluorinated greenhouse gases covered by theKyoto Protocol.

Refrigerant type: R407C

GWP(1) value: 1652.5

(1) GWP = global warming potential

Periodical inspections for refrigerant leaks may be requireddepending on European or local legislation. Please contact your localdealer for more information.

Maintenance activities

1 Air heat exchanger

Remove dust and any other contaminant from the coil fins usinga brush and a blower. Blow from the inside of the unit. Take carenot to bend or damage the fins.

2 Field wiring and power supply

Check the power supply voltage on the local supply panel.The voltage must correspond to the voltage marked on theidentification label of the unit.

Check the connections and make sure they are properlyfixed.

Check the proper operation of the circuit breaker and theearth leak detector provided on the local supply panel.

3 Internal wiring of the unit

Visually check the switch box on loose connections (terminalsand components). Make sure that the electrical components arenot damaged or loose.

4 Earth connection

Make sure that the earth wires are still connected properly andthat the earth terminals are tightened.

5 Refrigerant circuit

Check for leaks inside the unit. In case a leak is detected, callyour local Daikin dealer.

Check the working pressure of the unit. Refer to paragraph"Switching the unit on" on page 12.

6 Compressor

Check on oil leaks. If there is an oil leak, call your local Daikindealer.

Check for abnormal noises and vibrations. If the compressoris damaged, call your local Daikin dealer.

7 Fan motor

Clean the cooling ribs of the motor.

Check on abnormal noises. If the fan or motor are damaged,call your local Daikin dealer.

8 Water supply

Check if the water connection is still well fixed.

Check the water quality (refer to the installation manual of theunit for specifications of the water quality).

9 Flowswitch

Make sure that there is no dirt accumulated on the paddle of theflowswitch

10 Water filter

Clean the water filter.

Disposal requirements

Dismantling of the unit, treatment of the refrigerant, of oil and of otherparts must be done in accordance with relevant local and nationallegislation.

Before carrying out any maintenance or repair activity,always switch off the circuit breaker on the supply panel,remove the fuses or open the protection devices of the unit.

Do never clean the unit with water under pressure.

The wiring and power supply must be checked by alicensed electrician.



20


MENU OVERVIEW

Main display Enter password

Select parameter

setting values s-p

or levels l-p

(*)

(*) l-p function is not used.

Select parameter

group

Select parameter

Read and modify

parameter

DC

2"

DC

2"

2"

C

B

A

AC/D

B

C D

C D

C DC D

C D

C D

C D

C D

C D

C D

C D

C D

C D

C D

C D

C D

B

A

B

B=

A=

A

D

C

D

B5"

A+B/

S

5"

C D

Select and read parameter

Sensor readout menu(b01/b02/b03)

cancelconfirm


21EUWA(*)5~24KBZW1


NOTES


4

4

00

50

100

150

200

250

300

350

400

450

500

50 100 150 200 250

5

1

4

3

2

SP (kPa)

WF (l/min)

5

5

00

50

100

150

200

250

300

50 100 150 200 250

1

2

3

4

5

6

7

SP (kPa)

WF (l/min)

6

6

1.00

10.00

100.00

1000.00

1.00 10.00 100.00 100.00

1

2

3 5

6

7

4

WFE (l/min)

PD (kPa)

7

7

Pr= 1.4Pr= 1.3Pr= 1.5Pr= 1.7

Pr= 1.6Pr=

1.8Pr= 1.

9Pr= 2

.0Pr=

2.1

Pr=

2.2

0.50.60.70.80.91.01.11.21.31.41.51.61.71.81.92.0

0-23456789

1011121314151617

280260240220200180160140120100A= Water volume (l)

D= Factory setting 1.5 bar

B= In

stal

latio

n he

ight

diff

eren

ce (m

)

C= P

re-p

ress

ure

(bar

)


4PW61653-1 07.2010

Cop

yrig

ht 2

010

Dai

kin


INSTALLATION AND OPERATION MANUAL - ecr-nederland.nl · ce - declaration-of-conformity ce -...

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