Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC...

137
Top Secret Secret Internal use only Public Water Fancoils Water Fancoils service presentation service presentation FWT-FWF-FWC FWT-FWF-FWC

Transcript of Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC...

Page 1: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

Water FancoilsWater Fancoils –– service presentationservice presentation

FWT-FWF-FWC FWT-FWF-FWC

Page 2: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

2Apr 21, 2023

Internal Use Only Content

Fancoil Product List FWT,FWC,FWF – slide 3

Product PCB Features W2 pcb types – slide 11

PCB Features detail – slide 18

General operation – slide 33

Handsets and controllers – slide 84

PCB connections – slide 108

Water valves – slide 121

Diagnostics – slide 134

Content

Page 3: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

3Apr 21, 2023

Internal Use Only

Model OYL Daikin

Wall Mounted

WM07GW-AXAC-R56

FWT02

WM10GW-AXAC-R56

FWT03

WM15GW-AXAC-R56

FWT04

WM20GW-AXAC-R56

FWT05

WM25GW-AXAC-R56

FWT06

Indoor Wall Mounted

FCU Product List

Page 4: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

4Apr 21, 2023

Internal Use Only

Model Cooling Capacity

(kW)

Heating Capacity (kW)

FWT02 2.3 3.0

FWT03 2.8 3.75

FWT04 3.2 4.1

FWT05 4.8 6.01

FWT06 5.3 6.74

2 Pipes Application

FCU Product List

Indoor Wall Mounted FWT

Page 5: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

5Apr 21, 2023

Internal Use Only

Model OYL Daikin

2 P

ipes

3 x 3 Ceiling Cassette

CK20AW-AXBE-R56 FWC07

CK25AW-AXBE-R56 FWC08

CK30AW-AXBE-R56 FWC10

CK40AW-AXBE-R56 FWC11

CK50AW-AXBE-R56 FWC12

Panel PLCKAW-G8 HEAT-R56

DCP900 TA/TB

4 P

ipes

3 x 3 Ceiling Cassette

CK20AWH-AXAA-R56 FWC02

CK25AWH-AXAA-R56 FWC03

CK30AWH-AXAA-R56 FWC04

CK40AWH-AXAA-R56 FWC05

CK50AWH-AXAA-R56 FWC06

Panel PLCKAWH-G8 AP-R56 DCP900 FA/FB

Indoor Ceiling Cassette

FCU Product List

Page 6: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

6Apr 21, 2023

Internal Use Only

Model Cooling Capacity

(kW)

Heating Capacity (kW)

FWC07 6.63 8.4

FWC08 7.5 9.5

FWC10 8.8 11.0

FWC11 9.95 12.0

FWC12 10.8 12.9

2 Pipes Application

FCU Product List

Indoor Ceiling Cassette FWC

Page 7: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

7Apr 21, 2023

Internal Use Only

Model Cooling Capacity

(kW)

Heating Capacity (kW)

FWC02 3.8 10.5

FWC03 4.0 11.0

FWC04 4.6 12.5

FWC05 5.0 13.5

FWC06 5.2 13.8

4 Pipes Application

FCU Product List

Page 8: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

8Apr 21, 2023

Internal Use Only

Flexibility in selecting and installation.

Built-in high drain pump.

FCU Product List

Page 9: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

9Apr 21, 2023

Internal Use Only

Model OYL Daikin

2 P

ipes

2 x 2 Ceiling Cassette

CK10CW-AXBE-R56 FWF02

CK15CW-AXBE-R56 FWF03

CK20CW-AXBE-R56 FWF04

Panel PLCKCW-G8 HEAT-R56

DCP600 TA/TB

Indoor Ceiling Cassette FWF

FCU Product List

Page 10: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

10Apr 21, 2023

Internal Use Only

Model Cooling Capacity

(kW)

Heating Capacity (kW)

FWF02 2.34 3.22

FWF03 4.1 5.12

FWC04 4.25 5.42

2 Pipes Application

FCU Product List

Indoor Ceiling Cassette FWF

Page 11: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

ProductProduct FeaturesFeatures

Page 12: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

12Apr 21, 2023

Internal Use Only

All chilled water FCUs are using W2 control algorithm (W2 PCB). Hardware wise there are three types of pcb’s:

FWT 2 pipe - version

FWF 2 pipe, FWC 2pipe – version (are identical)

FWC 4 pipe - version

Despite the software used is the same on all fancoil types, the hardware of the pcb’s is unique for the three types of fancoils ,according the model some functions of the “W2” algorithm will be available or not .

FCU Features

Page 13: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

13Apr 21, 2023

Internal Use Only W2 PCB types

FWT pcb location (only two pipe) (mentioned pic is valid for FWT02-03-04, for FWT05/06 pcb layout is slightly different but all connections and connector names are the same)

Page 14: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

14Apr 21, 2023

Internal Use Only W2 PCB types

FWF pcb location (exist only in two pipe version)

Page 15: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

15Apr 21, 2023

Internal Use Only W2 PCB types

FWC pcb location

Page 16: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

16Apr 21, 2023

Internal Use Only W2 PCB types

FWC-T (two pipe version)

Page 17: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

17Apr 21, 2023

Internal Use Only W2 PCB types

FWC-F (four pipe version)

Page 18: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

18Apr 21, 2023

Internal Use Only FCU Features

(*) = possible (-) = not present

(a) Auto mode i.e. automatic selection of cool or heating mode based on the difference of the T setpoint and T room, is only possible with 4-pipe system and pcb configured as model 3, this means one coil is connected to a cold water system and the second coil to a hot water system.

(b) On the pcb’s of the 4-pipe fancoil cassettes the model “selection” of the pcb can be choosen between model 3 and 4 by means of a jumper. On the two pipe versions the pcb comes standard as a model 1 and no selection is to be made.

(c) The delay timer up to 15 hrs is only in combination with the wired controller SRC. On units with WRC or MERCA the internal

clock of the controller is used for timer functionality

W2 pcb features

Page 19: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

19Apr 21, 2023

Internal Use Only Features detail

PCB Model selection On the pcb’s of the four pipe versions (FWC 02~06) some model selection is possible in order to

activate some features of the pcb. All two pipe versions pcb’s come standard as model 1, and should not be changed! Model 2 is not valid for water fancoils.

Model selection is done via jumpers on the pcb, for fwt no selection jumpers are present. The fwf and fwc two pipe versions are factory wise configures as model 1, don’t change!Model 1 makes heating and cooling possible, no auto mode. Model 2 is not used for Daikin units

Page 20: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

20Apr 21, 2023

Internal Use Only

PCB Model selection - differences

– Model 3, with auto mode, this 4 pipe application requires one coil connected to cold water second coil should be connected to warm water. System will automatically activate the coils in order to achieve correct room temperature independant from selected working mode.

– Model 3 without auto mode, this is in fact standard 4 pipe functioning of the fcu, meaning one coil used for cooling and one coil for heating. Coil is selected depending on selection of heating or cooling by the user.

– Model 4, in this mode one coil is considered cool/heat (thus must me connected to heatpump system. Second coil is a booster coil which is activated when water from first coil is not hot enough. This is a not so common application

Page 21: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

21Apr 21, 2023

Internal Use Only Features detail

PCB Model selection 4 pipesdifferences between model 3 and model 4

For model 4 it’s important that primary coil Tc is connected to “heatpump” system in other words a system that can supply hot or cold water depending season. Second coil is booster coil and only used under certain conditions. Model 3 has always one cool coil and one heating coil.

Coil 1 (Tc)

Coil 2 (Tb)

Coil 2 (Tb)

Coil 1 (Tc)

booster

Page 22: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

22Apr 21, 2023

Internal Use Only Features detail

PCB Model selection

FWC – 4 pipe selection between model 3 and 4

Jumper open = activate model !

Exampl.= model 3 , put jumper on M4!

From factory fwc 4 pipes are standard configured as model 4!

The model 3 selection on FWC 4 pipes basically activates the socalled Auto mode,This needs the pressence of hot and cold water at the same time in the coils of the fcu .If wired controller is used, also jumper configuration in the wired controller needed.

Page 23: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

23Apr 21, 2023

Internal Use Only Features detail

Auto Mode – model 3 only (FWC – 4 pipe) one coil is connected to cold water one coil to hot water connected. Note: in case the wired controller Merca is used, it needs to be configured for “Auto mode”

During Auto heat mode, when room temperature rises and equals to the cool switch point, system will automatically switch to Auto cool mode. If room temperature falls down and reaches heat switch pointsystem will again change to Auto heat mode.

Switchpoints :

Cool switch point = T setpoint + 1°C

Heat switch point = T setpoint – 1°C

Auto HeatAuto Heat Auto CoolAuto Cool Auto HeatAuto Heat

TsTs

Ts + 1°CTs + 1°C

Ts - 1°CTs - 1°C

Page 24: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

24Apr 21, 2023

Internal Use Only Features detail

Auto Mode config – Merca pcb (wired controller) jumper selection , configuration of jumpers needed on pcb of wired controller Merca, For the wireless WRC controller no configuration needed!

Page 25: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

25Apr 21, 2023

Internal Use Only Features detail

Bar Heat mode setting – valid for all types of pcb.

On every pcb it’s possible to disable the heating function.This can be interessting for creating a cooling only system, and to avoid heating selection from the remote or wired control to avoid wrong temperature control.

FWF - FWC

FWT

Jumper HEAT:

Open : No heating selectable on control (remote or wired)

Short : Heating mode enabled

Page 26: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

26Apr 21, 2023

Internal Use Only Features detail

FAN PRIO setting - not possible on FWT pcbThis feature configures the behaviour of the fan during thermostat off cycle in other words when the watervalve is closed because setpoint has been reached (valid for auto fan or manual selection of fanspeed). Note that for valveless application this function is invalid and cannot be used, jumper must be shorted! . In FAN mode, this function will NOT influence the behaviour of the fan.

FWF

FWC

FWT, Fan prio feature not possible, fan will always run on low or in super low speed even in thermostat off cycle. Note super low speed stands for interval on/off of the fan during 5 minutes

Jumper Fan_P:

Open : Fan stops when thermostat off (valve off)

Short : Fan keeps running according manual selected or in low speed if auto fan was selected

Page 27: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

27Apr 21, 2023

Internal Use Only Features detail

Valve – Valveless selection - all pcb’sAll pcb’s can be configured by means of a jumper on the pcb for operating with or without watervalve. Actual temperature control of fancoil will differ between valve or valveless operation.

FWF - FWC

FWT

Jumper VALVE:

Open : without watervalve

Short : with watervalve

Page 28: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

28Apr 21, 2023

Internal Use Only Features detail

Load shedding – only FWC 4 pipe pcb not for FWF/FWT – FWC 2 pipe

This feature, when active will close the valve and stop the fan. The function is activated by closing a dry contact connected to the SHED terminal on the pcb. Actually the unit goes into stanby mode, control of the drainpump remains active. Note that the antrifreeze feature can override an active load shed function. This function allows “hardwired” enabling standby mode from remote eg by BMS system.

Dry contact SHED:

Open for 5 sec : deactivate load shedding

Close for 5 sec: activate load shedding

FWC

Note: on socalled dry contacts no exterrnal voltage should be apllied. The voltage (5V dc) is supplied by the pcb. Dry inputs are activated by simply closing a hardwired contact, eg from external relais controlled by an centralized control system.

Page 29: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

29Apr 21, 2023

Internal Use Only Features detail

Window open – only for FWC 4 pipe pcb not for FWF/FWT/FWC-2pipe

This feature when active will only close the water valve, the fan of the unit will run according FAN_prio setting which means if unit is thermostat on cycle mode the fan will keep runing

Dry contactW-open

Jumper FAN_P Thermostat off cycle Thermostat on cycle

Closed for 30 seconds

open Water valve closedfan off

Water valve closedFan on according temp difference (T room – Tset)

Closed for 30 seconds

shorted Water valve closedFan according user set speed OR low speed when unit was in auto fan mode

Water valve closedFan according user set speed OR

Fan on according temp difference (T room – Tset) in auto fan mode.

FWC 4 – pipe

Page 30: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

30Apr 21, 2023

Internal Use Only Features detail

Preprogrammed Unoccupied Setpoints - only for FWC 4 pipe not for FWF/FWT/FWC-2pipe

The fancoil can be forced to run at fixed setpoints under COOL or HEAT mode in order to save energy when for eg the room is not occupied. This function is activated by means of a dry contact.

Dry contactUNOCP

COOL mode HEAT mode

Closed for 5 seconds

Setpoint will be fixed at 30°C Setpoint will be fixed at 14°C

Open for 5 seconds

Go back to normal mode Go back to normal mode

FWC 4 – pipe

Override function: the user can override the unoccupied mode by changing the setpoints by means of the wireless controller or wired controller, override function will be valid for two hours.

Page 31: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

31Apr 21, 2023

Internal Use Only Features detail

Preprogrammed anti freeze setpoints – only for FWC 4 pipe not for FWF/FWT/FWC-2pipe

In order to protect the room from freezing, the unit will forced to achieve a room temperature of 10°C when function is activated by means of a dry contact. This function is only availabele when unit is working in HEAT mode.

Control algoritm:

Tr < 7.25°C?No

Yes

OFF mode or Thermostat off

cycle

Force ON 2 minutes

Indoor fan > force to Low fan

Tc > 25°C? Tr > 10°C?Stop 9

minutesOn valve, Low fan

No Yes

Yes

No

Tr = temp room

Tc = coil temp

Page 32: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

32Apr 21, 2023

Internal Use Only Features detail

Preprogrammed anti freeze setpoints

W2 (1)A_FRZ

W2 (2)A_FRZ

W2 (n)A_FRZ

SWGlobal

A_FRZ

Switch

Dry contact A_FRZ:

Open for 5 sec : deactivate anti freeze mode

Close for 5 sec: activate anti freeze mode

FWC 4 – pipe

Page 33: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

General operationGeneral operation

Page 34: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

34Apr 21, 2023

Internal Use Only

Unit ON/OFF

Power up settings / Auto random restart

Sleep function

Fan Speeds Auto/ High/ Medium/ Low indoor fan speed control

Room Temperature sensing

Water Pipe water sensing (2 & 4 pipe systems)

Cool/ Heat/ Dry*/ Auto*/FAN - Modes

Real time clock, ON/OFF timer

Valve and valve less control options

Water pump and water overflow protection control

Built in Self Diagnostic

General Operation

Page 35: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

35Apr 21, 2023

Internal Use Only

Unit On/OFF– Via On/Off triggering

– Via delay timer

– Via real time On/Off timer

1. Via ON/OFF Triggering

Pressing the remote controller ON/OFF button will toggle either the system

status from ON to OFF or from OFF to ON.

2. Via delay timer (only for SRC simple wired controller)This delay timer (1 to 15 hrs) will simulate the ON/OFF pressing, after a setting of hours and minutes into the delay function. After delay time has been elapsed it will be set back to 0 hours. Delay timer is reset by pressing ON/OFF button.

3. Via real time ON/OFF timer (only in combination with Merca and WRC)Unit can be switched ON/OFF by programming real time ON and OFF switch points into the rtc timer. Timer settings are retained so that switching can occur each 24 hrs.

General operation

Page 36: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

36Apr 21, 2023

Internal Use Only

Power Up Settings / Auto Random restart

During power up, system is setup to memorize the settings prior to shutdown (= standard factory setting)

The memorized settings are:

* Mode & On/Off status* Setpoints* Fan speeds* Swing flap function

To disable Auto Memorized function remove shorted jumper J_LST at the main board

General Operation

Page 37: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

37Apr 21, 2023

Internal Use Only

J_LST

Auto Random Restart (memorization) for all pcb’s

Jumper J_LST:

Open : No memorization

Short : memorization active (standard factory setting)

General Operation

Page 38: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

38Apr 21, 2023

Internal Use Only

Power UpPower Up

J_LST <SHORT>J_LST <SHORT>

User Set ModeUser Set Mode

User Set TemperatureUser Set Temperature

User Set Fan SpeedUser Set Fan Speed

Mode = COOLMode = COOL

Set Temperature = 24˚CSet Temperature = 24˚C

ID Fan Speed = HIGHID Fan Speed = HIGH

Swing Mode = OFFSwing Mode = OFF

ON/OFF statusON/OFF status

J_LST <OPEN>J_LST <OPEN>

Auto Random Restart, valid for all pcb’s

General Operation

Page 39: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

39Apr 21, 2023

Internal Use Only

Sleep Function Only available in COOL and HEAT modes. This function will increase temperature

setpoint (COOL mode) or decrease temperature setpoint (HEAT mode) according certain fixed time shedule.

General Operation

SLEEP set onSLEEP set on SLEEP set offSLEEP set off

TsTsTs + 1/2Ts + 1/2

Ts + 1Ts + 1

Ts + 2Ts + 2

00 1/21/2 11 22HoursHours

COOL mode

Page 40: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

40Apr 21, 2023

Internal Use Only

HEAT mode

SLEEP set onSLEEP set on SLEEP set offSLEEP set off

TsTs

Ts - 3Ts - 3

Ts - 2Ts - 2

Ts - 1Ts - 1

00 1/21/2 11 22 HoursHours

Sleep function

General Operation

Page 41: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

41Apr 21, 2023

Internal Use Only

FAN Speed Control:

– 3 indoor fan speeds are available, manually selectable :-

- High

- Medium

- Low

– In Auto fan mode, the fan speed will run depending on the difference between room/ return air temp and the set point temp.

– For valve less configuration, additional ‘super’ low fan speed is created. This is a interval mode of the fan, 5min On – 5min OFF

General Operation

Page 42: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

43Apr 21, 2023

Internal Use Only

Pipe Temperature Sensing:

General Operation

NTC

NTCT° coilMounted on coil

NTC

NTC

NTC

T° roomMounted in airintake section of fcu

2 -pipe

4 -pipe

Tc° cool coilMounted on coil

Tb° Heat coilMounted on coil

T° roomMounted in airintake section of fcu

• For model 3 fcu, second coil is considered as primary heating coil.

•For model 4, second coil is considered as a booster, first coil is considered as primary cool + heat coil.

Page 43: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

44Apr 21, 2023

Internal Use Only

Pipe Water Temp. Sensing

At startup of the fcu unit, water temperature in the coil(s) will be checked before going into so called thermostat control. The coil sensor Tc is used for this purpose .Tb refers to second coil which is considered as booster coil (model 4) or heating coil for (model 3) fcu.

Temperature test is performed during:

a) Power ON reset and unit is turned ON

or

b) Mode change

or

c) Unit recover from faults

The applied test procedure depends on presence of a valve and on the selected mode (COOL or HEAT)

General Operation

Page 44: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

45Apr 21, 2023

Internal Use Only

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into cooling thermostat cycle

14°C < Tr < 47°C

Tc < Tr + 2°C

(Force valve to ON)

Force On (Valve) 2 mins User set speed indoor fan.

If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

NoNo

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tc > Tr + 3°C(Water not suitable)

Tc > 30°C(Water not suitable)

With Water Valve – Cooling – 2 pipe

Tc < 29°C

General Operation

Only when room temp is very high > 47°

Page 45: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

46Apr 21, 2023

Internal Use Only

With Water Valve – Cooling – 2 pipe

After starting/power-up the unit, the water alve will be opened and fan will be forced to low speed during 2 minutes (allow coil to cool down, after opening of the valve) . After these 2 minutes, unit goes into a 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after these 2 minutes (sensing coil temperature) temperature is not suitable (Tc>Troom+3°) valve will be closed and fan will be run on low speed for 9 minutes.If fan prio jumper is open fan will stop completely.

When these 9 minutes are elapsed, unit will again perform first the two min force valve open / low fan mode and then the two minute sensing test unitil the coil temperature is cold enough. Note that no errors will be displayed in valve mode if temperature is not ok! As long the temp is not ok unit will stay in the 2+2 min On / 9 min OFF loop.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reset and set point becomes again equal to selected value on the controller

General Operation

Page 46: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

47Apr 21, 2023

Internal Use Only

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into heating thermostat cycle

14°C < Tr < 47°C

(Force valve to ON)

Force On (Valve) 2 mins User set speed indoor fan.

If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

NoNo

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tc < Tr - 3°C(Water not suitable)

Tc < 25°C(Water not suitable)

With Water Valve – Heating 2 pipe

Tc > Tr + 3°C Tc > 30°C

General Operation

Only when room te^p is very low < 14°

Page 47: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

48Apr 21, 2023

Internal Use Only

With Water Valve – Heating – 2 pipe

After starting/power-up the unit the water valve will be opened and fan will be forced to low speed during 2 minutes (allow the coil to heat up). After these 2 minutes, unit goes into 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after 2 minutes (sensing coil temperature) temperature is not suitable (Tc < Troom-3°) valve will be closed and fan will run on low speed for 9 minutes. In case fan prio jumper is open fan will stop completely.

When these 9 minutes are elapsed, unit will again perform first the two min force valve open / low fan mode and then the two minute sensing test unitil the coil temperature is warm enough. Note that no errors will be displayed in valve mode if temperature is not ok! As long the temp is not ok unit will stay in the 2+2 min On / 9 min OFF loop.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reseted and setpoint becomes again equal to selected value on the controller.

General Operation

Page 48: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

49Apr 21, 2023

Internal Use Only

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into cooling thermostat cycle

14°C < Tr < 47°C

Tc < Tr + 2°C

(Force valve to ON)

Force On (Valve) 2 mins User set speed indoor fan.

If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

NoNo

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tc > Tr + 3°C(Water not suitable)

Tc > 30°C(Water not suitable)

With Water Valve – Cooling – 4 pipe (model 4)

Tc < 29°C

General Operation

Only when room temp is very high > 47°

Page 49: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

50Apr 21, 2023

Internal Use Only

With Water Valve – Cooling – 4 pipe (model4)

After starting/power-up the unit, the water valve C_VLV will be opened and fan will be forced to low speed during 2 minutes (allow coil Tc to cool down, after opening of the valve) . After these 2 minutes, unit goes into a 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after these 2 minutes (sensing coil temperature) temperature is not suitable (Tc>Troom+3°) valve will be closed and fan will run on low speed for 9 minutes. In case fan prio jumper is open fan will stop completely.

When these 9 minutes are elapsed, unit will again perform first the two min force valve open / low fan mode and then the two minute sensing test unitil the coil temperature is cold enough. Note that no errors will be displayed in valve mode if temperature is not ok! As long the temp is not ok unit will stay in the 2+2 min On / 9 min OFF loop.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reset and set point becomes again equal to selected value on the controller

General Operation

Page 50: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

51Apr 21, 2023

Internal Use Only

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into heating thermostat cycle

14°C < Tr < 47°C

(Force valve to ON)

Force On C_VLV, Valve, 2 mins User set speed indoor

fan. If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

NoNo

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tc < Tr - 3°C(Water not suitable)

Tc < 25°C(Water not suitable)

With Water Valve – Heating 4 pipe (model 4)

Tc > Tr + 3°C Tc > 30°C, no booster

Tr-2°C < Tc < Tr + 2°C

Use booster (2nd coil)

26°C < Tc < 29°C

Use booster (2nd coil)

General Operation

Only when room temp is very low < 14°

Page 51: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

52Apr 21, 2023

Internal Use Only

With Water Valve – Heating – 4 pipe (model 4)

If after 2 min. force low fan, valve C_VLV will open, pcb will go into 2 minutes water temp. mode (sensing coil temperature Tc of first coil) if temperature is not suitable (Tc <Troom - 3) C_VLV valve will be closed and fan will run on low speed for 9 minutes. In case fan prio jumper is open fan will stop completely.

When these 9 minutes are elapsed, unit will again perform the two + two minute temp sensing test until the coil temperature is hot enough.

Note that after the Hot start time has been elapsed (20 min) the unit will (can) start to check second coil Tb (booster) in case water on first coil is still to cold. First a simular 2+2 min temp check will be performed on the booster coil.If booster temp is not ok, it will be forced off for 5 minutes.

If Tb > 28°C and Tb > Tr +5° boiler will be used. Booster will run only for 9 minutes, after this, system will again perform 2+2 min tempt test on coil one (Tc)!

This sequence will be repeated until water temp on coil Tc is hot enough, as this is the primary heating coil!

From moment the water in first coil (Tc) is hot enough thus Tc > Tr + 3,the booster coil will again be closed by the H_VLV valve.

Only circomstance where both coils could be active is when Tc is close to room temperature in this case both coils will be used for heating until temperature on Tc > Tr + 3C . In This case unit works in thermostat control mode and will follow temp control algorithm valid for thermostat control.

General Operation

Page 52: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

53Apr 21, 2023

Internal Use Only

With Water Valve – Heating – 4 pipe (model 4) booster function.

General Operation

20 min hot start elapsed

2 mins confirm?

Check TrCheck Tc

Enter into heating thermostat cycle

14°C < Tr < 47°C

(Force valve to ON)

Force On C_VLV, Valve, 2 mins User

set speed indoor fan. If Auto fan -> low fan

No

Yes

Yes

Tc < Tr - 3°C

(Water not suitable)

Tc > Tr + 3°C

Tr-2°C < Tc < Tr + 2°C

9 min force off C_VLV elpased

Yes

Check booster T

Tb >28° + Tb > Ts+5

Force On H_VLV, Valve, 2 mins User

set speed indoor fan. If Auto fan -> low fan

Temp ok, H_VLV open for 9 min. User set speed indoor fan. If Auto fan -> low fan

9 mins elapsed?

Yes

Yes

H_VLV close for 5 min. Fan speed follows Fan_prio

setting

NoNo

Room temp control

Tr > Ts-1 close H_vlv

Tr < Ts-2 H_vlv close

No

Booster 9 min

been in use ?

Yes

No

H_VLV close

No

Use Tc + Tb ( booster) !

Use onlyTb ( booster) !

Use only Tc !

Page 53: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

54Apr 21, 2023

Internal Use Only

Booster operation - Remarks

– Booster coil Tb only for 9 min contineous in operation, when water temperature on Tc (primary coil for heat/cool is to low.

– Booster coil Tb can operate together with Tc only if water temperature on primary coil Tc is according following equations: in other words close to the room temperature.

Tr-2°C < Tc < Tr + 2°C

Tb > 28°and Tb > Ts +5°

– As soon water temperature on primary coil Tc rises above Tr+3°the booster will be shut off!

General Operation

Page 54: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

55Apr 21, 2023

Internal Use Only General Operation

With water valve , 4 pipe (model 3) - Heating

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tb Check Tb

Enter into heating thermostat cycle

14°C < Tr < 47°C

(Force valve to ON)

Force On H_VLV, Valve, 2 mins User set speed indoor

fan. If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tb < Tr - 3°C(Water not suitable)

Tb < 25°C(Water not suitable)

Tb > Tr + 3°C Tb > 30°C

Tr-2°C < Tb < Tr + 2°C

Only when room te^p is very low < 14°

Page 55: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

56Apr 21, 2023

Internal Use Only

With Water Valve – Heating – 4 pipe (model 3)

If after 2 min. force low fan, valve H-VLV open, pcb will go into 2 minutes water temp. mode (sensing coil temperature Tb of heaing coil) if temperature is not suitable (Tb < Troom -3) C_VLV valve will be closed and fan will be run on low speed for 9 minutes. In case fan prio jumper is open fan will stop completely.

When these 9 minutes are elapsed, unit will again perform the two + two minute temp sensing test until the coil Tb temperature is hot enough. No errors are displayed in case water is not suitable. In case Tb is close to room tempTr-2<Tb<Tr+2 unit will also go into thermostat control, this can create some uncomfortable situation!.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reseted and setpoint becomes again equal to selected value on the controller

General Operation

Page 56: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

57Apr 21, 2023

Internal Use Only

9 mins elapsed?

9 mins elapsed?

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into cooling thermostat cycle

14°C < Tr < 47°C

Tc < Tr + 2°C

(Force valve to ON)

Force On (Valve) 2 mins User set speed indoor fan.

If Auto fan -> low fan

Others

(Force valve to ON)

No No

Yes Yes

NoNo

(Force valve OFF 9 mins)Yes Yes

(Force valve OFF 9 mins)

Tc > Tr + 3°C(Water not suitable)

Tc > 30°C(Water not suitable)

With Water Valve – Cooling – 4 pipe (model 3)

Tc < 29°C

General Operation

Only when room temp is very high > 47°

Page 57: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

58Apr 21, 2023

Internal Use Only

With Water Valve – Cooling – 4 pipe (model3)

After starting/power-up the unit, the water valve C_VLV will be opened and fan will be forced to low speed during 2 minutes (allow coil Tc to cool down, after opening of the valve) . After these 2 minutes, unit goes into a 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after these 2 minutes (sensing coil temperature) temperature is not suitable (Tc>Troom+3°) valve will be closed and fan will be stopped for 9 minutes in case fan prio jumper is open. Otherwise fan will run on low speed.

When these 9 minutes are elapsed, unit will again perform first the two min force valve open / low fan mode and then the two minute sensing test unitil the coil temperature is cold enough. Note that no errors will be displayed in valve mode if temperature is not ok! As long the temp is not ok unit will stay in the 2+2 min On / 9 min OFF loop.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reset and set point becomes again equal to selected value on the controller

General Operation

Page 58: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

59Apr 21, 2023

Internal Use Only

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into cooling thermostat cycle

14°C < Tr < 47°C

Tc < Tr - 3°C Tc < 25°C

Tr – 2°C < Tc < Tr + 2°C

Force On 2 mins Indoor fan -> force low fan

Others

26°C < Tc < 29°C

No No

(Fault declared, LED blinking)

Yes Yes

(Fault declared, LED blinking)

Tc > Tr + 3°C

(Water not suitable)

Tc > 30°C

(Water not suitable)

Without Water Valve – Cooling – 2 pipe

(Indoor fan -> force SLo fan) (Indoor fan -> force SLo fan)

(Indoor fan -> force Lo fan) (Indoor fan -> force Lo fan)

(Fault terminated, LED stop blinking)

(Fault terminated, LED stop blinking)

General Operation

Only when room temp is very high > 47°

Page 59: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

60Apr 21, 2023

Internal Use Only

Without Water Valve – Cooling – 2 pipe

After starting the unit’s fan will be forced to low speed during 2 minutes. After these 2 minutes, unit goes into another 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after the 2 + 2 minutes (sensing coil temperature) temperature is not suitable (Tc >Troom+3°) fan will be forced into SLO mode (5min interval On/OFF). Error E5 will be displayed (on wired controllers) or fault code with blinking leds on front panel of the unit. As soon Tc is < Tr-3°unit will go in thermostat control. Note that only for FWT extra E04 error exists for “poor” water temp wich actually correspond to equation Tr-2<Tc<Tr+2

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reseted and setpoint becomes again equal to selected value on the controller

General Operation

Page 60: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

61Apr 21, 2023

Internal Use Only

2 mins confirm?

2 mins confirm?

Check TrCheck Tc Check Tc

Enter into heating thermostat cycle

14°C < Tr < 47°C

Force On 2 mins Indoor fan -> force low fan

Others

No No

YesYes

Tc < Tr - 3°C Tc < 25°C

Without Water Valve - Heating

Tc > Tr + 3°C Tc > 30°C(Fault terminated, LED

stop blinking)(Fault terminated, LED

stop blinking)

(Fault declared, LED blinking) (Fault declared, LED blinking)

(Indoor fan -> force SLo fan) (Indoor fan -> force SLo fan)

Tr-2° < Tc < Tr + 2° 26°C < Tc < 29°C

General Operation

Only when room te^p is very low < 14°

(Indoor fan -> force SLo fan) (Indoor fan -> force SLo fan)

Page 61: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

62Apr 21, 2023

Internal Use Only

Without Water Valve – Heating – 2 pipe

After starting the unit’s fan will be forced to low speed during 2 minutes. After these 2 minutes, unit goes into another 2 minutes temperature check procedure, in case AUTO FAN was selected fan will now run with speed depending on the difference between T room and T setpoint.

If after 4 minutes (sensing coil temperature) temperature is not suitable (Tc < Troom-3°) fan will be forced into SLO mode (5min interval On/OFF). Error E5 will be displayed (on wired controllers) or fault code with blinking leds on front panel of the unit. As soon Tc is > Tr+3°unit will go in thermostat control.

Remark: during first start-up depending of the mode (cool or heat) a cold or hot start will be considered by the pcb’s software. This means actual setpoint will be offset internally with +2°for heat mode and -2°for cooling. After 20 minutes these offsets are reseted and setpoint becomes again equal to selected value on the controller

General Operation

Page 62: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

63Apr 21, 2023

Internal Use Only

Thermostat Control – COOL with water valve, for all models: Thermostat control becomes active after startup pipe sensing procedure

(checking of water temperatures)

- If water becomes to hot during cooling operation, pcb will go again into temp check mode (see flowcharts on pipe water sensing).

- Water Valve ON, if Tr => Ts + 1°C

- Water Valve OFF, if Tr <= Ts

- During cold start, Ts will offset by -2°C until water valve cut OFF or unit has run for at least 20 minutes

- Minimum thermostat cut in or out time is 30s

- 9 Minutes Water Valve force OnIf water valve is idle for more than 9 minutes in cool/dry mode and Tr=Ts or warmer the water valve will be forced to be ON for 2 min

- Fan Speed control:

* Indoor fan speed follow jumper FAN_PRIO setting

* For manual speed, indoor fan run as per user set speed

* For AUTO fan speed, the indoor fan speed will run depending of how far room temperature is from the setpoint

General Operation

Page 63: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

64Apr 21, 2023

Internal Use Only

With Water Valve - AUTO fan speed selected, COOLING :

Fan&valve reaction

Ts + 1Ts + 1

TsTs

°C°C

HH LLMM MM LLHHWater Valve Water Valve

ONONWater Valve Water Valve

ONONWater Valve Water Valve

OFFOFFWater Valve Water Valve

OFFOFF

Note: - When FAN_P jumper is open, fan will stop when water valve OFF - For FWT no FAN_P is available, only SLO mode (interval 5min

ON/OFF)

General Operation

Page 64: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

65Apr 21, 2023

Internal Use Only

With Water Valve - AUTO fan speed selected, COOLING :

Fan&valve reaction -example

Ts + 1Ts + 1

TsTs

°C°C

HH L/offL/offMM MM L/offL/offHHWater Valve Water Valve

ONONWater Valve Water Valve

ONONWater Valve Water Valve

OFFOFFWater Valve Water Valve

OFFOFF

General Operation

example Ts=22 (set on remote or wired control)

2323

2222

Remark: in cooling mode setpoint Ts, is only offset by +2° during start ,Cold start, cold start takes 20 min after startup .

If Fan_Prio open, during valve OFF, fan will be OFF

Page 65: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

66Apr 21, 2023

Internal Use Only

Without Water Valve – Manual Fan speed selected, COOL

TsTs

-1.0°C-1.0°C

-0.5°C-0.5°C

SLoSLo

SLoSLo

User set User set speed speed (H/M/L)(H/M/L)

User set User set speed speed (H/M/L)(H/M/L)

SLo region = indoor low fan ON 5 minute, OFF 5 minute

General Operation

Page 66: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

67Apr 21, 2023

Internal Use Only

Without Water Valve – Manual Fan speed selected, COOLexample

General Operation

Remark: in cooling mode setpoint Ts, is only offset by +2° during start ,Cold start, cold start takes 20 min after startup .

TsTs

-1.0°C-1.0°C

-0.5°C-0.5°C

SLoSLo

SLoSLo

User set User set speed speed (H/M/L)(H/M/L)

User set User set speed speed (H/M/L)(H/M/L)

example Ts=22 (set on remote or wired control)

2222

2121

21.521.5

Page 67: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

68Apr 21, 2023

Internal Use Only

Without Water Valve – with Auto Fan speed selected, COOL:

SLo region = indoor low fan ON 5 minute, OFF 5 minute

TsTs

-1.0°C-1.0°C

-0.5°C-0.5°C

SLoSLo

SLoSLo

+1.0°C+1.0°C

TsTs

-0.5°C-0.5°C

+0.5°C+0.5°C

LL

LL

MM

MM

HH

HH

General Operation

Minimum fan speed change time is 30s

Page 68: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

69Apr 21, 2023

Internal Use Only

Without Water Valve – with Auto Fan speed selected, COOL:

General Operation

Minimum fan speed change time is 30s - example

Remark: in cooling mode setpoint Ts, is only offset by +2° during start ,Cold start, cold start takes 20 min after startup .

TsTs

-1.0°C-1.0°C

-0.5°C-0.5°C

SLoSLo

SLoSLo

+1.0°C+1.0°C

TsTs

-0.5°C-0.5°C

+0.5°C+0.5°C

LL

LL

MM

MM

HH

HH

example Ts=22 (set on remote or wired control)

2222

21.521.5

2323

2222

21.521.5

22.522.5

2121

Page 69: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

70Apr 21, 2023

Internal Use Only

Dry mode runs under COOL mode with AUTO fan mode for 12 minutes or Until Tr=< Ts

After 12 minutes, the DRY mode operates like COOL cycle, however only low fan is allowed to cut in.

Dry mode can only work if water is suitable (Tc <Tr-3°)

General Operation

Page 70: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

71Apr 21, 2023

Internal Use Only

Thermostat Control – HEAT with water valve, for all models: Thermostat control becomes active after startup pipe sensing procedure

(checking of water temperatures)

- Water Valve ON, if Tr <= Ts - 1°C

- Water Valve OFF, if Tr >= Ts

- During cold start, Ts will offset by +2°C until water valve cut OFF or unit has run for at least 20 minutes

- Minimum thermostat cut in or out time is 30s

- Fan Speed control:

* Indoor fan speed follow jumper FAN_PRIO setting

* For manual speed, indoor fan run as per user set speed

* For AUTO fan speed, the indoor fan speed will run as follows:-

General Operation

Remark: in heating setpoint is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

Page 71: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

72Apr 21, 2023

Internal Use Only

With Water Valve – AUTO fan speed selected, HEAT :fan&valve reaction

Note: - When FAN_P jumper is open, fan will stop when water valve OFF - For FWT no FAN_P is available.

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

Ts - 1Ts - 1

TsTs

°C°C

HHLL MM MMLL HHWater Valve Water Valve

ONONWater Valve Water Valve

ONONWater Valve Water Valve OFFOFF

Water Valve Water Valve OFFOFF

Ts - 2Ts - 2

Page 72: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

73Apr 21, 2023

Internal Use Only

With Water Valve – AUTO fan speed selected, HEAT :fan&valve reaction - example

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

Ts - 1Ts - 1

TsTs

°C°C

HHLL MM MMLL HH

Water Valve Water Valve ONON Water Valve Water Valve

ONON

Water Valve Water Valve OFFOFF

Water Valve Water Valve OFFOFF

Ts - 2Ts - 2

example Ts=22 (set on remote or wired control)

2424

2323

2222

Ts+2

Page 73: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

74Apr 21, 2023

Internal Use Only

AUTO (cool/heat) MODE – switching between modes- Only applicable for Model 3 (four pipe + selection on pcb).

- Fan operates as normal Cool mode or Heat mode.

TrTr

Auto HeatAuto Heat Auto CoolAuto Cool Auto HeatAuto Heat

TsTs

Ts + 1°CTs + 1°C

Ts - 1°CTs - 1°C

During Auto heat mode, when room temperature rises and equals to the cool switch point, systeem will automatically switch to Auto cool mode. If room temperature falls down and reaches heat switchsetpoint system will again change to Auto heat mode.

General Operation

Remark: in AUTO cool/heat mode for determing switchpoint the heat setpoint offset by - 1° , for cooling switchpoint no offset is applied

Page 74: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

75Apr 21, 2023

Internal Use Only

AUTO (cool/heat) MODE – switching between modes- Only applicable for Model 3 (four pipe + selection on pcb).

- Fan operates as normal Cool mode or Heat mode.

General Operation

Remark: in AUTO cool/heat mode setpoint is offset by - 1°, for determining heat switch poinr, no offset is applied for cool switchpoint

TrTr

Auto HeatAuto Heat Auto CoolAuto Cool Auto HeatAuto Heat

TsTs

Ts + 1°CTs + 1°C

Ts - 1°CTs - 1°C

example Ts=22 (set on remote or wired control)Ts-1 Ts

2323

2222

2020

2323

2121

2020

Page 75: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

76Apr 21, 2023

Internal Use Only

AUTO (cool/heat) MODE – temp control&fan control- Only applicable for Model 3 (four pipe + selection on pcb).

- Fan operates as normal Cool mode or Heat mode.

General Operation

example Ts=22 (set on remote or wired control)Ts-1

Ts +1HH

2121

2222

2020

MM L/offL/off

2323

2424

L/offL/off HH

HH MM

MM L/offL/off

COOL VALVECOOL VALVE ONON

HEAT VALVEHEAT VALVE ONON

During L/OFF cycle valves are closed

HH MM

2323

Switchpoint to cool >23°

Switchpoint to heat < 20°

L/offL/off HH MM L/offL/off

Tr

Remark: in AUTO cool/heat mode, for the fan & temp control, cool and heat setpoint are both offset by 1°.

Page 76: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

77Apr 21, 2023

Internal Use Only

Without Water Valve – Manual fan speed selected, HEAT:

Minimum fan speed change time is 30s

TsTs

+1.5°C+1.5°C

+1.0°C+1.0°C

SLoSLo

SLoSLo

User set User set speed speed (H/M/L)(H/M/L)

User set User set speed speed (H/M/L)(H/M/L)

SLo region = indoor low fan ON 5 minute, OFF 5 minute

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

Page 77: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

78Apr 21, 2023

Internal Use Only

Without Water Valve – Manual fan speed selected, HEAT:

Minimum fan speed change time is 30s – example

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

TsTs

+1.5°C+1.5°C

+1.0°C+1.0°C

SLoSLo

SLoSLo

User set User set speed speed (H/M/L)(H/M/L)

User set User set speed speed (H/M/L)(H/M/L)

example Ts=22 (set on remote or wired control)Ts+2

2424

2525

25.525.5

Page 78: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

79Apr 21, 2023

Internal Use Only

Without Water Valve – AUTO fan speed selected, HEAT :

SLo region = indoor low fan ON 5 minute, OFF 5 minute

TsTs

-1.0°C-1.0°C

-2.0°C-2.0°C

SLoSLoSLoSLo

+1.5°C+1.5°C

TsTs

+1.0°C+1.0°C

+2.0°C+2.0°CLL

LL

MM

MM

HH

HH

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

Page 79: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

80Apr 21, 2023

Internal Use Only

Without Water Valve – AUTO fan speed selected, HEAT :example

General Operation

Remark: in heating setpoint Ts, is always offset by +2° even after the hot start of 20 min, this is to compensate room temperature stratifcation effect

TsTs

-1.0°C-1.0°C

-2.0°C-2.0°C

SLoSLoSLoSLo +1.5°C+1.5°C

TsTs

+1.0°C+1.0°C

+2.0°C+2.0°CLL

LL

MM

MM

HH

HH

example Ts=22 (set on remote or wired control)Ts+2

2424

2222

25.525.52626

2525

2323

2424

Ts+2

Page 80: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

81Apr 21, 2023

Internal Use Only

FAN MODE:

- Valves stays closed (no water flow !)Fan Mode is not available for valve less control systems

- 3 fan speed are available in Fan mode:

* High

* Medium

* Low

- Irrespective of jumper FAN_Prio setting

General Operation

Page 81: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

82Apr 21, 2023

Internal Use Only

• 70

0 m

m h

ea

d

pre

ss

ure

Condensate drainage- FWC/FWF Cassette units are equipped with drainpump & level detection

witch(normal closed)

- Pressure head 700 mm

- FWT needs field installed drainpump for cooling operation

Level switch

General Operation

Page 82: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

83Apr 21, 2023

Internal Use Only

Condensate drainage

Water Level Switch (Float Switch):

- Normally closed switch.

- If switch is close (>60s), water valve is allowed to cut in.

- If switch is open (>30s), it will force the water valve to cut off, water pump always on and show error E6 or blinking LED.

Water Pump:

- Water pump will on if the water valve is on or float switch contact is opened.

- Water Pump remain on for at least 5mins after the water valve is off or COOL mode switch to HEAT.

General Operation

Page 83: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

Types of HandsetsTypes of Handsets

Page 84: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

85Apr 21, 2023

Internal Use Only Handsets - controllers

Wireless remote controllers:

WRC-COB for cooling only applicationWRC-HPB for heat pump application

Note: WRC-COA / WRC-HPA was the previous version of handset

Wired remote controllers:

Standard: MERCA for both applicationsSimplified: SRC-COA for cooling only application SRC-HPA for heat pump application

Handsets & controllers

Page 85: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

86Apr 21, 2023

Internal Use Only Handsets- controllers

Handsets & controllers

All handsets and controllers can be combined for whole fcu range

WRC

MERCA

SRC

Page 86: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

87Apr 21, 2023

Internal Use Only Handsets - controllers

xx type of FCU;CO for cooling only FCUor HP for Heat pump FCU controller

Handsets & controllers

Wireless controller:– WRC-xxB Wireless

– supplied with decoration panel kit

Wired controller:– MERCA Standard

– SRC-xxA Simplified

General features:

3 selectable fan speed

Automatic swing (optional)

Dehumidification function

Sleep mode: energy saving option allowing prevention of excessive cooling during summer and excessive heating during night for a comfortable rest.

WRC

MERCA

SRC

Page 87: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

88Apr 21, 2023

Internal Use Only

Wireless controller

Handsets - controllers

Real Time Clock

LCD Display

Operating Mode

Fan Speed

ON/OFF Switch

Transmission

“Sleep” Function

Timer Switch Setting

Swing

TemperatureSetting

WRC-xxA (previous version)

Page 88: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

89Apr 21, 2023

Internal Use Only

WRC-xxB (latest version 09/2009)

Handsets - controllers

1. IR transmission source

2. Signal transmission indication

3. ON/OFF button

4. Fan speed selection

5. Mode selection

6. Swing activation

7. -

8. Timer OFF setting

9. RTC setting

10.Timer ON setting

11.Sleep function

12.Personalize button

13.Temperature setting

Page 89: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

90Apr 21, 2023

Internal Use Only

Operation mode– Cooling only:

• Cool, Dry and Fan

– Heating mode:• Auto, Cool, Dry, Fan and Heat

– Automode only available for 4-pipe system (mode 3)

Timer setting: to turn ON/OFF the air conditioner at the desired time

– ON Timer setting:• Activation by pressing on SET

• Time setting by pressing continuously on SETuntil desired time is selected

• Cancel to cancel the ON Timer setting

– OFF Timer setting• Activation by pressing on SET

• Time setting by pressing continuously on SETuntil desired time is selected

• Cancel to cancel the ON Timer setting

Wireless controller – Main functions

ON Timer OFF Timer

WRC-xxB

Handsets - controllers

Page 90: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

91Apr 21, 2023

Internal Use Only

Sleep Mode: energy saving option while optimising

comfort conditions by temperature adjustment

In cooling mode, this function will prevent

excessive cooling during summer season– After the first 1/2h, T0°→ T0° + 0,5°C

– After 1h, T0°→ T0° + 1°C

– After 2h, T0°→ T0° + 2°C

In heating mode, this function will prevent

night sweat– After the first 1/2h, T0°→ T0°-1°C

– After 1h, T0°→ T0°-2°C

– After 2h, T0°→ T0°-3°C

Wireless controller – Main functions

Energy Saving Comfort

Sleep Mode activated

Sleep Mode activated

WRC-xxB

Handsets - controllers

Page 91: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

92Apr 21, 2023

Internal Use Only

Wireless controller – Optional functions

Automatic air swing

Activation of automatic air swing

Air distribution according to a specific direction is possible: 1. press on SWING until the louver moves to the desired direction 2. press on SWING once again

WRC-xxB

Handsets - controllers

Page 92: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

93Apr 21, 2023

Internal Use Only

Personalize Setting (memory)– Possibility to save two settings:

• Press personalize button for 3 sec

• P1 will start to blink In display

• Toggle on to switch between P1 & P2

• Make preference settings, after 4 sec without pressing any button settings will be save under selected memory

• To activate saved setting toggle shortlyon the button.

• To deactivate any selected memorizedsetting, press any key

Wireless controller – Main functions WRC-xxB

Handsets - controllers

Page 93: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

94Apr 21, 2023

Internal Use Only

Wireless controller – Main functions

Operation mode– Cooling only:

• Cool, Dry and Fan

– Heating mode:• Auto, Cool, Dry, Fan and Heat

– Automode only available for 4-pipe system

Timer setting: to turn ON/OFF the air conditioner at the desired time

– ON Timer setting:• Activation by pressing on SET

• Time setting by pressing continuously on SETuntil desired time is selected

• CLR to cancel the ON Timer setting

– OFF Timer setting• Activation by pressing on SET

• Time setting by pressing continuously on SETuntil desired time is selected

• CLR to cancel the ON Timer settingON Timer OFF Timer

WRC-xxA

Handsets - controllers

Page 94: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

95Apr 21, 2023

Internal Use Only

Sleep Mode: energy saving option while optimising

comfort conditions by temperature adjustment

In cooling mode, this function will prevent

excessive cooling during summer season– After the first 1/2h, T0°→ T0° + 0,5°C

– After 1h, T0°→ T0° + 1°C

– After 2h, T0°→ T0° + 2°C

In heating mode, this function will prevent

night sweat– After the first 1/2h, T0°→ T0°-1°C

– After 1h, T0°→ T0°-2°C

– After 2h, T0°→ T0°-3°C

Wireless controller – Main functions

Energy Saving Comfort

Sleep Mode activated

Sleep Mode activated

WRC-xxA

Handsets - controllers Handsets - controllers

Page 95: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

96Apr 21, 2023

Internal Use Only

Wireless controller – Optional functions

Automatic air swing

Activation of automatic air swing

Air distribution according to a specific direction is possible: 1. press on SWING until the louver moves to the desired direction 2. press on SWING once again

WRC-xxA

Handsets - controllers

Page 96: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

97Apr 21, 2023

Internal Use Only

Fan

Temperature Setting

Operating Mode

ON/OFF Switch

LCD Display

Real Time Clock

Swing

ON/OFF Timer

Sleep

Timer Active

Standard wired controller

Handsets - controllers

MERCA wired controller for FWT-FWF-FWC

Page 97: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

98Apr 21, 2023

Internal Use Only

Standard wired – Main functions

Operation mode– Cool, Heat, Auto, Dry, Fan

– Automode only available for 4-pipe system

Time setting:– CLOCK: activates or disable the Real Time Clock setting mode (RTC)

• Under RTC setting mode: setting thanks to keys DAY, HOUR and MINUTE

– 3 events programmable and 7-days programmable timers

• Each timer has ON TIMER and OFF TIMER

• Timer setting mode of event i is enabled by pressing on ON TIMER (or OFF TIMER) i times

Handsets - controllers

Page 98: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

99Apr 21, 2023

Internal Use Only

Mode config – Merca pcb (wired controller),configuration of jumpers needed on

pcb of the wired controller Merca. Note:Auto mode only valid for 4 pipe systems.

Auto mode system (auto switching between cool/heat)

Cool/ Heat system (heat pump)

Jd short, Jh short

Jd open, Jh short

Handsets - controllers

Page 99: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

100Apr 21, 2023

Internal Use Only

Mode config – Merca pcb (wired controller),configuration of jumpers needed on

pcb of the wired controller Merca,

Cooling only system Jd short, Jh open

Jumper J4 determines user setting range for room setpoint

J4 open : 16-30° - J4 short: 20-30°C

Handsets - controllers

Page 100: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

101Apr 21, 2023

Internal Use Only

Standard wired – Main functions

Operation mode– Cool, Heat, Auto, Dry, Fan

– Auto-mode only available for 4-pipe system

Time setting:– CLOCK: activates or disable the Real Time Clock setting mode (RTC)

• Under RTC setting mode: setting thanks to keys DAY, HOUR and MINUTE

– 3 events programmable and 7-days programmable timers

• Each timer has ON TIMER and OFF TIMER

• Timer setting mode of event i is enabled by pressing on ON TIMER (or OFF TIMER) i times

Handsets - controllers

Page 101: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

102Apr 21, 2023

Internal Use Only

Standard wired – Main functions

Timer Active: activates or de-activates all set timers

– Override function: when activated, all the timers will bypassed and turn ON the unit for a fix periodof 1, 2 or 4 hours (depending on the selection) and then turn off

• Activation by pressing HOUR (one time for 1 hour, 2 times for 2 hours and 3 for 4 hours)

• Deactivation by pressing HOUR

Automatic Air Swing:– Activation of automatic air swing

Handsets - controllers

Page 102: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

103Apr 21, 2023

Internal Use Only

Standard wired – Main functions

Sleep Mode:: energy saving option while optimising

comfort conditions by temperature adjustment

In cooling mode, this function will prevent

excessive cooling during summer season

– After the first 1/2h, T0°→ T0° + 0,5°C

– After 1h, T0°→ T0° + 1°C

– After 2h, T0°→ T0° + 2°C

In heating mode, this function will prevent

night sweat

– After the first 1/2h, T0°→ T0°-1°C

– After 1h, T0°→ T0°-2°C

– After 2h, T0°→ T0°-3°C

Sleep Mode activated

Sleep Mode activated

Energy Saving Comfort

Handsets - controllers

Page 103: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

104Apr 21, 2023

Internal Use Only

Temperature Display

Operating Mode

Fan Speed

ON/OFF Switch

IR Receiver

“Sleep” Function

Timer Switch Setting

Swing

TemperatureSetting

SRC-xxA FWT / FWF / FWC Two version available :

- SRC-HPA – heating/cooling- SRC-COA – cooling only

Handsets - controllers

Hamdani Sana
Page 104: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

105Apr 21, 2023

Internal Use Only

Simplified wired – Main functions Operation mode

– Cooling only:• Cool, Dry and Fan

– Heating mode:• Auto, Cool, Dry, Fan and Heat

– Automode: Not available

Fan Speed:: Low, medium, high or automatic

Timer switch setting: to turn ON/OFF the air conditioner

• By pressing on TIMER, the unit will turnON/OFF 1 up to 10 hours later

Handsets - controllers

Page 105: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

106Apr 21, 2023

Internal Use Only

Sleep Mode:: energy saving option while optimising

comfort conditions by temperature adjustment

In cooling mode, this function will prevent

excessive cooling during summer season

– After the first 1/2h, T0°→ T0° + 0,5°C

– After 1h, T0°→ T0° + 1°C

– After 2h, T0°→ T0° + 2°C

In heating mode, this function will prevent

night sweat

– After the first 1/2h, T0°→ T0°-1°C

– After 1h, T0°→ T0°-2°C

– After 2h, T0°→ T0°-3°C

Simplified wired – Main functions

Energy Saving Comfort

Sleep Mode activated

Sleep Mode activated

Handsets - controllers

Page 106: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

107Apr 21, 2023

Internal Use Only

Simplified wired – Optional function

Automatic air swing:

-- Activation of automatic air swing

- Air distribution according to a specific direction is possible: 1. press on SWING until the louver moves

to the desired direction 2. press on SWING once again

Handsets - controllers

Page 107: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

PCB connectionsPCB connections

Page 108: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

109Apr 21, 2023

Internal Use Only PCB connections

FWT (mentioned pic is valid for FWT02-03-04, for FWT05/06 pcb layout is slightly different but all connections and connector names are the same)

ASDC Swing motor

-Valve/Valveless Setting

- Bar Heat Setting

Room Sensor

Coil Sensor

IR ReceiverAssy. LED

Page 109: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

110Apr 21, 2023

Internal Use Only

FWT

PCB connections

Page 110: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

111Apr 21, 2023

Internal Use Only

FWT

PCB connections

Page 111: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

112Apr 21, 2023

Internal Use Only

Low Fan

Medium FanHigh Fan

LIVE

NEUTRAL

Room Sensor

Coil Sensor

Water Valve

Water Pump

AC Swing

FWF

PCB connections

Page 112: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

113Apr 21, 2023

Internal Use Only

Float Switch

- Fan Priority Setting

- Valve/Valveless Setting

- Bar Heat Setting

OR

MERCA SRCIR ReceiverAssy. LED

WRC

FWF

PCB connections

Page 113: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

114Apr 21, 2023

Internal Use Only

FWF

PCB connections

Page 114: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

115Apr 21, 2023

Internal Use Only

FWC - 2 pipe

OR

MERCA SRCIR ReceiverAssy. LED

WRC

PCB connections

Page 115: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

116Apr 21, 2023

Internal Use Only

Low FanMedium Fan

High Fan

LIVE

NEUTRAL

Room Sensor

Coil Sensor

Water Valve

Water Pump

AC Swing

Float Switch

- Fan Priority Setting

- Valve/Valveless Setting

- Bar Heat Setting

FWC - 2 pipe

PCB connections

Page 116: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

117Apr 21, 2023

Internal Use Only

FWC - 2 pipe (FWC-T)

PCB connections

Page 117: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

118Apr 21, 2023

Internal Use Only

Unoccupied setting

Anti Freeze setting

Window Open setting

Float Switch

Load Shedding Setting

- Fan Priority Setting

- Valve/Valveless Setting

- Bar Heat Setting

OR

MERCA SRC IR ReceiverAssy. LED

WRC

Not used in water fcu !

PCB connections

FWC - 4 pipe (FWC-F)

Page 118: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

119Apr 21, 2023

Internal Use Only

Low FanMedium Fan

High Fan

LIVE

NEUTRAL

Room Sensor

Coil Sensor cool coil

Water Valve - cool

Water Pump

AC Swing

Water Valve - heat

Coil Sensor heat coil

PCB connections

FWC - 4 pipe (FWC-F)

Page 119: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

120Apr 21, 2023

Internal Use Only

FWC 4 pipe (FWC-F)

PCB connections

Page 120: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

Water ValvesWater Valves

Page 121: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

122Apr 21, 2023

Internal Use Only

VALVE KITS

– For FWF, MCKCW2T3VN kit is available.

– For FWC-T, MCKAW2T3VN kit is available.

– For FWC-F, MCKAWH4T3VN kit is availabele.

Kits consist of: valve, actuator, shut off valves and special designed piping for connection on fcu.

– For FWT no kit available, valve and pump are field supply.

Water valves

Page 122: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

123Apr 21, 2023

Internal Use Only

4 port 3-way valve functioning (mixing) std config

Water valves

Close = de-energized NC actuator

Open = energized NC actuator

close open

Bypass direction

ININ

OUT

To IN FCU

OUT

From out FCU From out FCU

Watch symbol on

valve body

To IN FCU

Page 123: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

124Apr 21, 2023

Internal Use Only

4 port 3-way valve functioning (diverting)

Water valves

Close = de-energized NC actuator

Open = energized NC actuator

close open

Bypass direction

ININ

OUT

To IN FCU

OUT

From out FCUFrom out FCU

Watch symbol on

valve body

To IN FCU

Page 124: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

125Apr 21, 2023

Internal Use Only Water valves

FWF - MCKCW2T3VN – installation Kit includes:3 way/4 port on/off valve diametre ¾” thermo-electric NC actuator 230 vaccopper pipes diametre 18mm, welded connections ¾” gas niples

Page 125: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

126Apr 21, 2023

Internal Use Only Water valves

FWF - MCKCW2T3VN – installation

Fan side

Ceiling sideWater drain

Drain tube

Diametre 20mm with collar of 20.5 mm

Water conn on unit. all ¾”

Page 126: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

127Apr 21, 2023

Internal Use Only Water valves

FWC-T MCKAW2T3VN – installation Kit includes:3 way/4 port on/off valve diametre ¾” thermo-electric NC actuator 230 vaccopper pipes diametre 18mm, welded connections ¾” gas niples

Page 127: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

128Apr 21, 2023

Internal Use Only Water valves

FWC - MCKAW2T3VN – installation

Fan sideFan side

Water drain

Page 128: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

129Apr 21, 2023

Internal Use Only Water valves

FWC-F MCKAWH4T3VN – installation Kit includes:1 * 3 way/4 port on/off valve diametre ½ ”, secondary coil1* 3 way/4 port on/off valve diametre ¾” 2 * thermo-electric NC actuator 230 vaccopper pipes diametre 18mm, welded connections ¾” gas niples

Page 129: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

130Apr 21, 2023

Internal Use Only Water valves

FWC – F MCKAWH4T3VN – installation

Fan sideFan side

Ceiling sideCeiling side

Primary coil Secondary coil

¾”

½ ”

Water conn on unit. all ¾”

Page 130: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

131Apr 21, 2023

Internal Use Only Water valves

Hydraulic properties 3 way – 4 port valves ½” and ¾”

Page 131: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

132Apr 21, 2023

Internal Use Only Water valves

Hydraulic properties 3 way valves ¾”

Page 132: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

133Apr 21, 2023

Internal Use Only Water valves

Hydraulic properties 3 way valves ½”

Page 133: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

Top SecretSecret

Internal use onlyPublic

Diagnostics

Page 134: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

135Apr 21, 2023

Internal Use Only

Error messaging by means of COOL/HEAT led blinking on operation panel or by visualization of an error code on display wired controller.

FWT FWC-FWF

MercaSRC

Ionizer LED is not used with water fcu

Error Diagnosis

Page 135: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

136Apr 21, 2023

Internal Use Only

COOL LED On Led panel unit

Error CodeOn display wired controller

MERCA or SRC

Descriptions

1 blink E1 Room Sensor short/open

2 blinks E2 Pipe Water Sensor short/open

6 blinks E6 Water Pump Error

5 blinks E5 Pipe Water Temperature Fault

3 blinks - Window Open Activated

7 blinks - Antifreeze Mode Activated

8 blinks - Load Shedding Activated

*Blinking (1s each) -> off 3s -> blinking (1s each)

Others LEDs OFF

Error table FWC-FWF

Error Diagnosis

Page 136: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

137Apr 21, 2023

Internal Use Only

SLEEP LED

On panel unit

COOL/HEAT

LED

on panel unit

Timer LED

On Led panel unit

Error Code

On display wired controller

MERCA or SRC

Descriptions

On/off Green - - Unit in cool mode – sleep mode on or off

On/off Red - - Unit in heat mode – sleep mode on or off

1 blink - E1 Room Sensor short/open

Cont. blink 2 blink - E2 Pipe Water Sensor short/open

3 blink E4 Pipe Water Temperature poor (Tr-2<Tc<Tr+2)

1 blink E5 Pipe Water Temperature bad (Tc< Tr-3) for heating or Tc>Tr+3 for cooling

-

Error table FWT - only

Error Diagnosis

Page 137: Top Secret Secret Internal use only Public Water Fancoils – service presentation FWT-FWF-FWC FWT-FWF-FWC.

138Apr 21, 2023

Internal Use Only

Resistances NTC temp sensors

Error Diagnosis