STEA S.p.A.

STEA S.p.A.District Heating Substations

RAT - RBT - RHAT - RHBT

Index

RAT - RBT - RHAT - RHBT Floor standing substation 04 Components 06 Hydraulic layout 08 Main components 11 Technical details 18 Outfitting 31

RAT RBTMODEL R... SPACE HEATING ONLY TYPE

4

• Control system housed inside the main electrical panel (II). The electrical panel, made of metal with protection degree IP 54 closed door and IP 20 open door, has a transparent door with lock. On front panel houses: weather-control, differential thermalbreaker2x10A30mA,setof2fuses10Aforpumpcontrol heating, warning lights for thermostat and voltage, protection and safety devices (high temperature) - (7).

On demand it’s possible to have different brands of regulation compatible with spacing control valves provided.All selected and installed components have been carefully tested before use.Each substation STEA complies with European Community rules,inparticularDirective97/23/EC(PED).Allsubstationsareequippedwithtestcertificates,CEmarkingand user and maintenance manual of each installed component.

TECHNICAL DOCUMENTATION

In support of each substation will supply the following documentation: instruction manual about substation and control system, booklet, circuit diagram of switchboard, technical documentation of installed material, conformity and testing certificate of heatexchanger according to Directive 97/23/EC, conformity andtestingcertificateofthermalsubstationaccordingtoDirective97/23/EC, protection and safety devices about installedequipment.

RAT RBTMODEL R... SPACE HEATING ONLY TYPE

5

SPACE HEATING ONLY TYPE

The district heating substation model RAT RBT produces domestic heating. Compact size allows installation in all situations where space is very small allowing system transformation without costly renovation of existing thermal stations (removal of heat generator). The substation can be set along the perimeter wall without compromising the accessibility of installed equipment; the electrical panel can rotate on its axis for full access in all the conditions of installation.The compactness and quality components, make the substation highly reliable and easy to transport and install.To facilitate transport and installation is possible to supply separately the heat exchangers.

MAIN COMPONENTS

• Heat exchanger brazed or gasketed plate (on demand) adequately insulated;

• Thermoregulating valves with actuator with safety function and spring return;

• Ultrasound static heat meter (on demand);• Flow and temperature limiter (on demand);• Non-return valve (I4)• Expansion vessel to service the heat exchanger (I5);

RHAT RHBTMODEL RH... SPACE HEATING + DOMESTIC HOT WATER TYPE

MAIN COMPONENTS

• Heat exchangers, brazed or gasketed plate (on demand) adequately insulated;

• Thermoregulation valves with actuator with safety function and spring return;

• Ultrasound static heating meter (on demand);• Flow and temperature limiter (on demand);• Non-return valve;• Expansion vessel to service the heat exchanger;• Health circulation pump;• Control system housed inside the main electrical panel.

The electrical panel made of metal with protection degree IP 54 closed door and IP 20 open door, has a transparent door with lock. On front panel houses: weather-control, differential thermal breaker 2x10A 30mA, set of 2fuses 10A for pump control heating, warning lights for thermostat and voltage, protection and safety devices (high temperature).

On demand it’s possible to have different brands of regulation.All selected and installed components have been carefully tested before use. Each substation STEA complies with European Community rules,inparticularDirective97/23/EC(PED).Allsubstationsareequippedwithtestcertificates,CEmarkingand user and maintenance manuel of each installed component.

TECHNICAL DOCUMENTATION

In support of each substation will supply the following documentation: instruction manual about substation and control system, booklet, circuit diagram of switchboard, technical documentation of installed material, conformity and testing certificate of heatexchanger according to Directive 97/23/EC, conformity andtestingcertificateofthermalsubstationaccordingtoDirective97/23/EC, protection and safety devices about installedequipment.

6 7

RHAT RHBTMODEL RH... SPACE HEATING + DOMESTIC HOT WATER TYPE

SPACE HEATING + SANITARY HOT WATER TYPE

Floor standing substation model RH is ideal for installation in district heating systems at high or low temperatures, that require combined production of space heating and domestic hot water.Compact size allows installation in all situations where space is very limited allowing old boiler replacement without costly renovation of existing thermal stations (removal of heat generator).The substation can be set along the perimeter wall without compromising the accessibility of installed equipment; the electrical panel can rotate on its axis for full access in all conditions of installation.The substation is highly reliable and easy to transport and install. To facilitate transport and installation is possible to supply separately the heat exchangers.

RAT RBT RHAT RHBThydraulic layout - space heating only

8 9

RAT RBT RHAT RHBThydraulic layout - space heating + domestic hot water

hydraulic layout - space heating only with double exchanger

hydraulic layout - space heating + domestic hot water with hot water tank

LEGENDSTEEL BALL VALVE

FILTERWAFER CHECK VALVEHEAT METER

HEAT EXCHANGER PLATES

THERMOREGULATORY VALVE

ELECTRO-HYDRAULIC ACTUATOR

MEMBRANE EXPANSION VESSEL

BRASS BALL VALVE

DRAIN COCK

SWITCHBOARD

SAFETY AND PROTECTION DEVICES

DRAIN VALVE, VENT OR GAUGE HOLDER

CAST IRON FILTER

PRIM

ARY

SECO

ND

ARY

SPACE HEATINGCIRCUIT

LEGENDSTEEL BALL VALVE

FILTERWAFER CHECK VALVE

HEAT METER

HEAT EXCHANGER PLATES



MEMBRANE EXPANSION VESSEL

BRASS BALL VALVE

DRAIN COCK

SWITCHBOARD

SAFETY AND PROTECTION DEVICES

DRAIN VALVE, VENT OR GAUGE HOLDER

PRIM

ARY

SECO

ND

ARY

PRIM

ARY

SECO

ND

ARY

PRIM

ARY

SECO

ND

ARY

PRIM

ARY

SECO

ND

ARY SPACE HEATING

CIRCUIT

DOMESTICHOT WATER

CIRCUIT

LEGENDSTEEL BALL VALVE FILTER DISC CHECK VALVEHEAT METERSPACE HEATING HEAT EXCHANGER SPACE HEATING TERMOREGULATORY VALVEACTUATOR FOR SPACE HEATINGEXPANSION VESSEL HEAT EXCHANGERCALIBRATION DRAIN OR BY-PASS INSTALLATION SHUT-OFF VALVESECONDARY SYSTEM DRAIN VALVESECONDARY SYSTEM SHUT-OFF VALVE FOR DOMESTIC HOT WATERBOILER LOADING PUMPHEAT EXCHANGER FOR DOMESTIC HOT WATERTHERMOREGULATORY VALVE FOR DOMESTIC HOT WATER

ACTUATOR FOR DOMESTIC HOT WATERSWITCHBOARDSAFETY AND PROTECTION DEVICESDRAIN COCKIMPURITIES FILTER

SUPPLY LIMIT

SUPPLY LIMIT

STORAGEBUFFER

HOT

COLD

PRIM

ARY

SECO

ND

ARY

PRIM

ARY

SECO

ND

ARY SPACE HEATING

CIRCUIT

DOMESTICHOT WATER

CIRCUIT

STEEL BALL VALVE FILTER DISC CHECK VALVEHEAT METERSPACE HEATING HEAT EXCHANGER SPACE HEATING TERMOREGULATORY VALVEACTUATOR FOR SPACE HEATINGEXPANSION VESSEL HEAT EXCHANGERINSTALLATION SHUT-OFF VALVESECONDARY SYSTEM DRAIN VALVESECONDARY SYSTEM SHUT-OFF VALVE FOR DOMESTIC HOT WATER

STEEL BALL VALVEHEAT EXCHANGER FOR DOMESTIC HOT WATERTHERMOREGULATORY VALVE FOR DOMESTIC HOT WATER

ACTUATOR FOR DOMESTIC HOT WATERSWITCHBOARDSAFETY AND PROTECTION DEVICESDRAIN COCKCAST IRON FILTER

LEGEND

R - RHPrimary circuit components

10 11

SHUT-OFF VALVE

Shutoff valves up to DN150 and drain valves will be PN25 steel ball, ball and stem in stainless steel, seals suitable for water at 140° C with traces of hydrazine, attacks for welding.

FILTER

The filterswill have the steel bodyY-type PN25with bolted lid, stainless steel filtermesh 0.5mm,equipped with drain plug on the lid.


The valve body will be ductile iron GG25, two-way, PN25. The stem and the sealing of stainless steel.The nominal diameter and the KVS will be sized according to the characteristics of the individual system.


Electro-hydraulicactuatorhasspringreturn,with3pointscontrol,supplyvoltage220Vandstrokeof220 mm.

CLIMATE REGULATOR

Climate regulator for district heating substations, with 26 kinds of circuits with heat exchangers (for the heating system and hot water system).

HEAT EXCHANGER

HeatexchangerbrazedplatePN25oralternativelygasketedplatesteelAISI316andEPDMseals;sizingasperspecificationsincompliancewithDirective97/23/EC.Heat exchanger adequately insulated.

HEAT METER

Ultrasonic static heat meter according to the rated capacity of each substation already prepared for remote reading via M-BUS.PossibilitytolimitthescopethroughtheprimaryinterfacewiththeclimateregulatorRVD235.

NON-RETURN VALVE

Non-return valve WAFER steel spring PN25.

PRIMARY RETURN TEMPERATURE PROBE

Probe for temperature measurement on pipes from 15 to 150 mm, signal LG-NI 1000.

RELIEF VALVE FLOW / TEMPERATURE

Reliefvalveflow/temperature.

R - RHSecondary circuit componentsSafety components and control systems installed on the secondary circuit of the substations STEA in models RBT (low temperature <100 ° C) and RAT (high temperature> 100 ° C).

12 13

COMPONENT DESCRIPTION RAT RBT

Safety valveSafety valve, couplings, pressure relief overcharge 10%, 20% operating differential range, PN10, temperature range 5/110° C

x x

ManometerAccuracy class: UNI 2.5, temperature range -20 / 90° C, scale 0-6 bar for space heating and 0-10 for domestic hot water

x x

Expansion vessel

Weldedexpansiontank,unifiedforspaceheatinganddomestichotwater,non-toxicmembrane(DM03/21/1973),butyl, with diaphragm, working pressure 10 bar, working temperature 99° C

x x

Regulating thermostat Immersion thermostat, adjustable working range 0/90° C, withfitting1/2”,degreeofprotectionIP43 x

Safety thermostat Immersion thermostat, safety with manual reset, setting 100°C(+0°C-6°C),withfitting1/2”,degreeofprotection IP40

x

Double thermostat Safety double thermostat by immersion, with manual reset, setting100%(+0°C-6°C),adjustable0/90°C,withfitting1/2”,degreeofprotectionIP43

x

Thermometer Rearconnection1/2”,withcockpitdiam.80mm,precisionclass UNI2 x x

Thermowell controlwell1/2” x


Gauge valve Valve test gauge three-way, working pressure 15 bar, temperature range 5/90° C x

Minimum pressurestat

Minimum pressurestat with manual reset, 250V-16A, working pressure 5 bar, ambient temperature range -10 / 55°C,fluidtemperaturerangeof0-110°C,1/4”female,IP44 protection

x

Opt

iona

l

Ball valve secondary circuit Material brass PN16, threaded FF up to DN80 x x

Butterflyvalvesecondary circuit CastironversionLUGforinstallationbetweenflanges

for DN> 100, PN16 x x

Ball valve secondary circuit CastironversionforinstallationbetweenflangesforDN>

100, PN16.

Opt

iona

l

Opt

iona

l

Secondaryflowtemperature probe

Probe for measuring the temperature of liquids in pipes or air distribution channels, signal LG-NI 1000, application range-30+130°C,PN10

x x

Secondary return temperature sensor

Probe for measuring the temperature of liquids in pipes or air distribution channels, signal LG-NI 1000, application range-30+130°C,PN10 O

ptio

nal

Opt

iona

l

External temperature sensor

Outside air sensor, signal LG-NI 1000, application range -50+70°C, IP54 protection x x

R - RHAdditional components secondary circuit


Circulation pump Single or twin or three-speed electronic control, for replacing the existing pump system

Opt

iona

l

Opt

iona

l

Insulation pipes primary and secondary

Insulation pipe circuit primary / secondary with rock wool andaluminumfinishlaminates/isogenopack

Opt

iona

l

Opt

iona

l

Insulation for heat exchanger

Insulation for heat exchanger with pre-formed insulation and plastic insulation or to be assembled in roch wool

Opt

iona

l

Opt

iona

l

14 15

RHInstant production/storageMAIN COMPONENTS DOMESTIC HOT WATER CIRCUIT FOR INSTANT PRODUCTION / STORAGESafety components and control systems installed on the secondary circuit of the substations STEA models RBT (low temperature) and RAT (high temperature)


Safety valveSafety valve, couplings, pressure relief overcharge 10%, 20% operating differential range, PN10, temperature range 5/110° C

x x

ManometerAccuracy class: UNI 2.5, temperature range -20 / 90° C, scale 0-6 bar for space heating and 0-10 for domestic hot water

x x

Expansion vessel

Weldedexpansiontank,unifiedforspaceheatinganddomestichotwater,non-toxicmembrane(DM03/21/1973),butyl, with diaphragm, working pressure 10 bar, working temperature 99° C.

x x

Regulating thermostat Immersion thermostat, adjustable working range 0/90° C, withfitting1/2”,degreeofprotectionIP43 x

Safety thermostat Immersion thermostat, safety with manual reset, setting 100°C(+0°C-6°C),withfitting1/2”,degreeofprotection IP40.

x

Double thermostat Safety double thermostat by immersion, with manual reset, setting100%(+0°C-6°C),adjustable0/90°C,withfitting1/2”,degreeofprotectionIP43

x

Thermometer Rearconnection1/2”,withcockpitdiam.80mm,precisionclass UNI2 x x

Thermowell Controlwell1/2” x

RHInstant production/storage

16 17


Gauge valve Valve test gauge three-way, working pressure 15 bar, temperature range 5/90° C

x

Minimum pressurestat

Minimum pressurestat with manual reset, 250V-16A, working pressure 5 bar, ambient temperature range -10 / 55°C,fluidtemperaturerangeof0-110°C,1/4”female,IP44 protection

x

Opt

iona

l

Ball valve secondary circuit Material brass PN16, threaded FF up to DN80 x x

Butterflyvalvesecondary circuit CastironversionLUGforinstallationbetweenflanges

for DN> 100, PN16

x x

Ball valve secondary circuit Castironversionforinstallationbetweenflanges

for DN> 100, PN16

Opt

iona

l

Opt

iona

lSecondaryflowtemperature probe

Probe for measuring the temperature of liquids in pipes or air distribution channels, signal LG-NI 1000, application range-30+130°C,PN10

x x

Secondary return temperature sensor

Probe for measuring the temperature of liquids in pipes or air distribution channels, signal LG-NI 1000, application range-30+130°C,PN10 O

ptio

nal

Opt

iona

l

External temperature sensor

Outside air sensor, signal LG-NI 1000, application range -50+70° C, IP54 protection

Opt

iona

l

Opt

iona

l


Circulation pump Circulation pump single or twin or three-speed electronic control, for replacing the existing pump system

Opt

iona

l

Opt

iona

l

Insulation pipes primary and secondary

Insulation pipe circuit primary / secondary with rock wool andaluminumfinishlaminates/isogenopack

Opt

iona

l

Opt

iona

l

Insulation for heat exchanger

Insulation for heat exchanger with pre-formed insulation and plastic insulation or to be assembled in roch wool

Opt

iona

l

Opt

iona

l

Storage tank Hotwaterstoragewithinsulationandsacrificialanodemagnesium

Opt

iona

l

Opt

iona

l

18 19

Model RBT - low temp.Brazed heat exchanger

SUP

PLY

DIS

TR

ICT

HE

AT

ING

HO

T W

AT

ER

- D

IRE

CT

TY

PE

HO

T W

AT

ER

SU

PP

LY F

LOO

R

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E H

EA

TIN

G U

SE, M

OD

EL

RB

T…

BR

AZ

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

BT

100

…R

BT

150

…R

BT

200

…R

BT

250

…R

BT

300

…R

BT

350

…R

BT

400

…

RB

T 4

50 …

Pow

er10

0 kW

150

kW20

0 kW

250

kW300kW

350kW

400

kW45

0 kW

Ove

rall

dim

ensi

ons

(L)

mm

.1350

1350

1450

1600

1600

1600

1650

1650

Ove

rall

dim

ensi

ons

(P)

mm

.350

350

400

400

400

400

400

400

Ove

rall

dim

ensi

ons

(H)

mm

.19

0019

0019

0019

0019

0019

0019

0019

00

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)72

,078

,097

,0153,0

153,0

161,

016

9,0

177,

0

Hea

t ex

chan

ger

wei

ght

(Kg.

)12

,020

,025

,042

,042

,045

,050

,055

,0

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

Con

nect

ions

Dn

25D

n 25

Dn

40D

n 50

Dn

50D

n 50

Dn

50D

n 50

Hea

t m

eter

(D

n)25

2540

4040

5050

50

Heatmeternom

inalflow

(mc/h)

3,5

610

1010

1515

15

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk2

L.2

L.2

L.2

L.2

L.2

L.2

L.2

L.

Con

nect

ions

Dn

40D

n 40

Dn

50D

n 65

Dn

65D

n 65

Dn

65D

n 65

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

Model RBT - low temp.Brazed heat exchanger

SUP

PLY

DIS

TR

ICT

HE

AT

ING

HO

T W

AT

ER

- D

IRE

CT

TY

PE

HO

T W

AT

ER

SU

PP

LY F

LOO

R

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E H

EA

TIN

G U

SE, M

OD

EL

RB

T…

BR

AZ

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

BT

500

…R

BT

600

…R

BT

700

…R

BT

800

…R

BT

900

…R

BT

100

0 …

RB

T 1

200

…R

BT

150

0 …

Pow

er50

0 kW

600

kW70

0 kW

800

kW90

0 kW

1000

kW

1200

kW

1500

kW

Ove

rall

dim

ensi

ons

(L)

mm

.16

5016

5016

8016

8017

0017

5018

0018

50

Ove

rall

dim

ensi

ons

(P)

mm

.50

050

050

050

050

050

050

050

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

0019

0019

0019

0019

0019

0019

0019

00

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)24

4,0

253,0

325,0

325,0

363,0

385,0

--

Hea

t ex

chan

ger

wei

ght

(Kg.

)68

,077

,090

,090

,098

,012

0,0

--

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

Con

nect

ions

Dn

65D

n 65

Dn

65D

n 65

Dn

80D

n 80

Dn

100

Dn

100

Hea

t m

eter

(D

n)65

6565

8080

80-

-

Heatmeternom

inalflow

(mc/h)

2525

2540

4040

--

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk5

L.5

L.5

L.5

L.5

L.5

L.5

L.5

L.

Con

nect

ions

Dn

80D

n 80

Dn

100

Dn

100

Dn

100

Dn

100

Dn

125

Dn

125

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

20 21

DOMESTIC HOT WATER MODULE LTTechnical features

Model RAT - high temp.Brazed heat exchanger

DOMESTIC HOT WATER MODULE LT TO COMBINE WITH ONLY SPACE HEATING SUBSTATION COMPLETE MODEL RHBT… BRAZED (HOT WATER SUPPLY)

TECHNICAL FEATURES HBT 100 SB HBT 200 SB HBT300SB

Power 100 kW 200 kW 300kW

Overall dimensions (L) mm. 1350 1350 1350

Overall dimensions (P) mm. 350 350 350

Overall dimensions (H) mm. 1900 1900 1900

Complete substation weight (Kg.) 72,0 97,0 153,0

Heat exchanger weight (Kg.) 12,0 25,0 42,0

Primary circuit

Nominal pressure 16/25 Bar 16/25 Bar 16/25 Bar

Supplyflowtemperature 95 °C 95 °C 95 °C

Connections Dn 25 Dn 25 Dn 25

Heat meter (Dn) Opzionale Opzionale Opzionale

Heatmeternominalflow(mc/h) Opzionale Opzionale Opzionale

Space heating circuit

Nominal pressure 10 Bar 10 Bar 10 Bar

Pressure relief valve safety 5,4 Bar 5,4 Bar 5,4 Bar

Maximumflowtemperature 85 °C 85 °C 85 °C

Expansion tank 2 L. 2 L. 2 L.


Electric data

Supply voltage 230Vac 230Vac 230Vac

Electrical power consumption 120 W 120 W 120 W

DIR

EC

T T

YP

E S

UP

ER

HE

AT

ED

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E

HE

AT

ING

USE

, MO

DE

L R

AT

… B

RA

ZE

D

TE

CH

NIC

AL

FEA

TU

RE

SR

AT

100

…R

AT

150

…R

AT

200

…R

AT

250

…R

AT

300

…R

AT

350

…R

AT

400

…R

AT

450

…

Pow

er10

0 kW

150

kW20

0 kW

250

kW300kW

350kW

400

kW45

0 kW

Ove

rall

dim

ensi

ons

(L)

mm

.1350

1350

1450

1600

1600

1600

1650

1650

Ove

rall

dim

ensi

ons

(P)

mm

.350

350

400

400

400

400

400

400

Ove

rall

dim

ensi

ons

(H)

mm

.19

0019

0019

0019

0019

0019

0019

0019

00

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)72

,078

,097

,0153,0

153,0

161,

015

016

0

Hea

t ex

chan

ger

wei

ght

(Kg.

)12

,020

,025

,042

,042

,045

,045

50

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

Con

nect

ions

Dn

25D

n 25

Dn

40D

n 50

Dn

50D

n 50

Dn

50D

n 50

Hea

t m

eter

(D

n)25

2525

2540

4040

40

Heatmeternom

inalflow

(mc/h)

3,5

3,5

66

1010

1010

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk2

L.2

L.2

L.2

L.2

L.2

L.2

L.2

L.

Con

nect

ions

Dn

40D

n 40

Dn

50D

n 65

Dn

65D

n 65

Dn

65D

n 65

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

Model RAT - high temp.Brazed heat exchanger

DIR

EC

T T

YP

E S

UP

ER

HE

AT

ED

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E

HE

AT

ING

USE

, MO

DE

L R

AT

… B

RA

ZE

D

TE

CH

NIC

AL

FEA

TU

RE

SR

AT 5

00 …

RAT

600

…R

AT 7

00 …

RAT

800

…R

AT 9

00 …

RAT

100

0 …

RAT

120

0 …

RAT

150

0 …

Pow

er50

0 kW

600

kW70

0 kW

800

kW90

0 kW

1000

kW

1200

kW

1500

kW

Ove

rall

dim

ensi

ons

(L)

mm

.16

5016

5016

8016

8017

0017

5018

0018

50

Ove

rall

dim

ensi

ons

(P)

mm

.50

050

050

050

050

050

050

050

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

0019

0019

0019

0019

0019

0019

0019

00

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)230

240

310

315

353

375

--

Hea

t ex

chan

ger

wei

ght

(Kg.

)60

7088

8892

110

--

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

Con

nect

ions

Dn

65D

n 65

Dn

65D

n 65

Dn

80D

n 80

Dn

100

Dn

100

Hea

t m

eter

(D

n)40

5050

6565

65-

-

Heatmeternom

inalflow

(mc/h)

1015

1525

2525

--

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk5

L.5

L.5

L.5

L.5

L.5

L.-

-

Con

nect

ions

Dn

80D

n 80

Dn

100

Dn

100

Dn

100

Dn

100

Dn

125

Dn

125

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

23

DOMESTIC HOT WATER MODULE HTTechnical features

DOMESTIC HOT WATER MODULE HT TO COMBINE WITH ONLY SPACE HEATING SUBSTATION COMPLETE MODEL RHBT… BRAZED (HOT WATER SUPPLY)

TECHNICAL FEATURES HAT 100 SB HAT 200 SB HAT300SB





Complete substation weight (Kg.) 72,0 97,0 130

Heat exchanger weight (Kg.) 12,0 25,0 35

Primary circuit












Electric data



22

24 25

Model RBT - low temp.Gasketed plate heat exchanger

DIR

EC

T T

YP

E H

OT

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E H

EA

TIN

G

USE

, MO

DE

L R

BT

… G

ASK

ET

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

BTI 1

00 …

RBT

I 150

…R

BTI 2

00 …

RBT

I 250

…RBTI300…

RBTI350…

RBT

I 400

…R

BTI 4

50 …

Pow

er10

0 kW

150

kW20

0 kW

250

kW300kW

350kW

400

kW45

0 kW

Ove

rall

dim

ensi

ons

(L)

mm

.15

0015

0018

0018

0018

0018

0021

0021

00

Ove

rall

dim

ensi

ons

(P)

mm

.44

044

044

044

044

044

044

044

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

4019

4019

4019

4019

4019

4019

4019

40

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)22

0,0

230,0

263,0

272,

028

4,0

310,0

333,0

368,0

Hea

t ex

chan

ger

wei

ght

(Kg.

)14

0,0

150,

016

5,0

173,0

185,

019

5.0

206,

022

0,0

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

Con

nect

ions

Dn

25D

n 25

Dn

40D

n 50

Dn

50D

n 50

Dn

50D

n 50

Hea

t m

eter

(D

n)25

2540

4040

5050

50

Heatmeternom

inalflow

(mc/h)

3,5

610

1010

1515

15

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk2

L.2

L.2

L.2

L.2

L.2

L.2

L.2

L.

Con

nect

ions

Dn

40D

n 40

Dn

50D

n 65

Dn

65D

n 65

Dn

65D

n 65

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

Model RBT - low temp.Gasketed plate heat exchanger

DIR

EC

T T

YP

E H

OT

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E H

EA

TIN

G

USE

, MO

DE

L R

BT

… G

ASK

ET

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

BT

500

…R

BT

600

…R

BT

700

…R

BT

800

…R

BT

900

…R

BT

100

0 …

RB

T 1

200

…R

BT

150

0 …

Pow

er50

0 kW

600

kW70

0 kW

800

kW90

0 kW

1000

kW

1200

kW

1500

kW

Ove

rall

dim

ensi

ons

(L)

mm

.22

50,0

2250

,022

50,0

2250

,024

00,0

2400

,025

00,0

2500

,0

Ove

rall

dim

ensi

ons

(P)

mm

.44

0,0

440,

055

0,0

550,

055

0,0

550,

055

0,0

550,

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

40,0

1940

,019

40,0

1940

,019

40,0

1940

,019

40,0

1940

,0

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)40

4,0

440,

0683,0

752,

076

7,0

792,

0-

-

Hea

t ex

chan

ger

wei

ght

(Kg.

)233,0

269,

044

1,0

511,

052

6,0

551,

0-

-

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

95 °

C95

°C

Con

nect

ions

Dn

65D

n 65

Dn

65D

n 65

Dn

80D

n 80

Dn

100

Dn

100

Hea

t m

eter

(D

n)65

6565

8080

80-

-

Heatmeternom

inalflow

(mc/h)

2525

2540

4040

--

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk5

L.5

L.5

L.5

L.5

L.5

L.5

L.5

L.

Con

nect

ions

Dn

80D

n 80

Dn

100

Dn

100

Dn

100

Dn

100

Dn

125

Dn

125

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

Model RAT - high temp.Gasketed plate heat exchanger

DIR

EC

T T

YP

E S

UP

ER

HE

AT

ED

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E

HE

AT

ING

USE

, MO

DE

L R

AT

… G

ASK

ET

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

AT

100

…R

AT

150

…R

AT

200

…R

AT

250

…R

AT

300

…R

AT

350

…R

AT

400

…R

AT

450

…

Pow

er10

0 kW

150

kW20

0 kW

250

kW300kW

350kW

400

kW45

0 kW

Ove

rall

dim

ensi

ons

(L)

mm

.15

0015

0018

0018

0018

0018

0021

0021

00

Ove

rall

dim

ensi

ons

(P)

mm

.44

044

044

044

044

044

044

044

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

4019

4019

4019

4019

4019

4019

4019

40

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)20

022

0253

262

275

300

320

350

Hea

t ex

chan

ger

wei

ght

(Kg.

)130

140

155

163

175

185

195

210

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

Con

nect

ions

Dn

25D

n 25

Dn32

Dn32

Dn

40D

n 40

Dn

40D

n 40

Hea

t m

eter

(D

n)25

2525

2525

4040

40

Heatmeternom

inalflow

(mc/h)

3,5

3,5

66

1010

1010

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk2

L.2

L.2

L.2

L.2

L.2

L.2

L.2

L.

Con

nect

ions

Dn

40D

n 40

Dn

50D

n 65

Dn

65D

n 65

Dn

65D

n 65

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

27

DOMESTIC HOT WATER MODULE LTTechnical features

DOMESTIC HOT WATER MODULE TO COMBINE WITH ONLY SPACE HEATING SUBSTATION COMPLETE MODEL RHBT… GASKETED

TECHNICAL FEATURES HBTI 100 SB HBTI 200 SB HBTI300SB







Primary circuit












Electric data



26

28 29

Model RAT - high temp.Gasketed plate heat exchanger

DIR

EC

T T

YP

E S

UP

ER

HE

AT

ED

WA

TE

R S

UP

PLY

FLO

OR

STA

ND

ING

SU

BST

AT

ION

ON

LY S

PAC

E

HE

AT

ING

USE

, MO

DE

L R

AT

… G

ASK

ET

ED

TE

CH

NIC

AL

FEA

TU

RE

SR

AT 5

00 …

RAT

600

…R

AT 7

00 …

RAT

800

…R

AT 9

00 …

RAT

100

0 …

RAT

120

0 …

RAT

150

0 …

Pow

er50

0 kW

600

kW70

0 kW

800

kW90

0 kW

1000

kW

1200

kW

1500

kW

Ove

rall

dim

ensi

ons

(L)

mm

.16

5016

5016

8016

8017

0017

5018

0018

50

Ove

rall

dim

ensi

ons

(P)

mm

.50

050

050

050

050

050

050

050

0

Ove

rall

dim

ensi

ons

(H)

mm

.19

0019

0019

0019

0019

0019

0019

0019

00

Com

plet

e su

bsta

tion

wei

ght

(Kg.

)390

420

630

730

750

760

--

Hea

t ex

chan

ger

wei

ght

(Kg.

)21

025

0423

495

507

530

--

Pri

mar

y ci

rcui

t

Nom

inal

pre

ssur

e16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r16

/25

Bar

16/2

5 Ba

r

Supplyflow

tem

perature

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

140

°C14

0 °C

Con

nect

ions

Dn

50D

n 50

Dn

65D

n 65

Dn

65D

n 80

Dn

100

Dn

100

Hea

t m

eter

(D

n)40

5050

6565

80-

-

Heatmeternom

inalflow

(mc/h)

1015

1525

2525

--

Spac

e he

atin

g ci

rcui

t

Nom

inal

pre

ssur

e10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar10

Bar

10 B

ar

Pres

sure

rel

ief v

alve

saf

ety

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

4,0

Bar

Maximum

flow

tem

perature

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

85 °

C85

°C

Expa

nsio

n ta

nk5

L.5

L.5

L.5

L.5

L.5

L.-

-

Con

nect

ions

Dn

80D

n 80

Dn

100

Dn

100

Dn

100

Dn

100

Dn

125

Dn

125

Ele

ctri

c da

ta

Supp

ly v

olta

ge230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

230Vac

Elec

tric

al p

ower

con

sum

ptio

n12

0 W

120

W12

0 W

120

W12

0 W

120

W12

0 W

120

W

DOMESTIC HOT WATER MODULE HTTechnical features

DOMESTIC HOT WATER MODULE TO COMBINE WITH ONLY SPACE HEATING SUBSTATION COMPLETE MODEL RHAT… GASKETED

TECHNICAL FEATURES HAT 100 HAT 200 HAT300







Primary circuit












Electric data



30 31

OUTFITTING ON DEMAND

TECHNICAL FEATURES RBT… RAT... RHBT… RHAT...

Scope limiter On demand On demand On demand On demand

Pressure probe primary circuit On demand On demand On demand On demand

Pressure probe secondary circuit On demand On demand On demand On demand

Refillingvalve(combined) On demand On demand On demand On demand

Safety and control devices Standard Standard Standard Standard

Yfilterprimarycircuit Standard Standard Standard Standard

Yfiltersecondarycircuit Standard Standard Standard Standard

Shutoff valves secondary circuit Standard Standard Standard Standard

Ready function Standard Standard Standard Standard

Climatic function Standard Standard Standard Standard

External probe On demand On demand On demand On demand

Room remote control On demand On demand On demand On demand

Scope limiter and primary return temperature Standard Standard Standard Standard

Ultrasonic heat meter Standard Standard Standard Standard

Remote management of substation Predispositon Predispositon Predispositon Predispositon

Frost protection of pipes Standard Standard Standard Standard

Low temperature management system Standard Standard Standard Standard

* technical details are subject to change by STEA S.p.A.

R - RHOutfittingplanned

Via Roncadelle, 8 - 25132 Brescia - (BS) ItaliaTel. +39 030 7630310 - Fax +39 030 2659485

www.steaspa.it - [email protected]

STEA S.p.A.

Documents

Transcript of STEA S.p.A.