Bosch Greenstar FS 100 Combi Instructions for use

Gas Condensing Wall Hung & Floor Standing Boilers
Bosch
Greenstar & Greenstar FS 100, 151, 131 Combi Boiler
Greenstar & Greenstar FS 79, 100, 131, 151 Regular Boiler
Applications Manual
WARNING:
Improper installation, setup, modification, operation or
maintenance of the heating system can cause personal
injury and property damage.
Follow each appliances' instructions precisely.
For assistance or further information, contact a trained
and certified installer, service provider, or the gas
supply company.
Application drawings in this manual are conceptual only
and do not purport to address all design, installation,
code, or safety considerations.
The diagrams in this manual are for reference use by
code officials, designers and licensed installers. It is
expected that installers have adequate knowledge of
national and local codes, as well as accepted industry
practices, and are trained on equipment, procedures,
and applications involved. Drawings are not to scale.
Refer to the boiler, control and module installer manuals
for additional detailed information!

2 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change

Applications Manual Bosch Greenstar | 3
Bosch Thermotechnology Corp. Data subject to change
Table of Contents
Single Zone Systems 6
System #1
Greenstar Combi Wall Boiler
Single Zone Baseboard with Standard Thermostat (drycontact only) and CRC200 (optional for P model boiler) 6
System #2
Greenstar Combi Wall Boiler
Single Zone Baseboard with Bosch CRC control 8
System #3
Greenstar Combi Floor Boiler
Single Zone Baseboard with Standard Thermostat (dry contact only) 10
System #4
Greenstar Combi Floor Boiler
Single Zone Baseboard with Bosch CRC control 12
System #5
Greenstar Heat only Wall Boiler
Single Zone Baseboard with Standard Thermostat (dry contact only) and CRC200 14
System #6
Greenstar Heat only Wall Boiler
Single Zone Baseboard with Bosch CRC control 16
System #7
Greenstar Heat only Floor Boiler
Single Zone Baseboard with Standard Thermostat (dry contact only) 18
System #8
Greenstar Heat only Floor Boiler
Single Zone Baseboard with Bosch CRC control 20
Multi Zone Systems using Circulators 22
System #9
Greenstar Combi Wall Boiler
Multi zone system using circulators with standard zone relay (CRC200 optional for P model boiler) 22
System #10
Greenstar Combi Wall Boiler
Multi zone system using circulators and Bosch Comfort Zone Manager (CZM100) 24
System #11
Greenstar Combi Floor Boiler
Multi zone system using circulators with standard zone relay (CRC200 optional) 26
System #12
Greenstar Combi Floor Boiler
Multi zone system using circulators and Bosch Comfort Zone Manager (CZM100) 28
System #13
Greenstar Heat only Wall Boiler
Multi zone system using circulators with standard zone relay (CRC200) and indirect tank 30
System #14
Greenstar Heat only Wall Boiler
Multi zone system using circulators and Bosch Comfort Zone Manager (CZM100) and indirect tank 32
System #15
Greenstar Heat only Floor Boiler
Multi zone system using circulators with standard zone relay (CRC200 optional) and indirect tank 34
System #16
Greenstar Heat only Floor Boiler
Multi zone system using circulators and Bosch Comfort Zone Manager (CZM100) and indirect tank 36

4 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Multi Zone Systems using Zone Valves 38
System #17
Greenstar Combi Wall Boiler
Multi zone system using zone valves with standard zone relay (CRC200 optional for p model boiler) 38
System #18
Greenstar Combi Wall Boiler
Multi zone system using zone valves and Bosch Comfort Zone Manager (CZM100) 40
System #19
Greenstar Combi Floor Boiler
Multi zone system using zone valveswith standard zone relay (CRC200 optional) 42
System #20
Greenstar Combi Floor Boiler
Multi zone system using zone valves and Bosch Comfort Zone Manager (CZM100) 44
System #21
Greenstar Heat Only Wall Boiler
Multi zone system using zone valves with standard zone relay (CRC200) and indirect tank 46
System #22
Greenstar Heat Only Wall Boiler
Multi zone system using zone valves and Bosch Comfort Zone Manager (CZM100) and indirect tank 48
System #23
Greenstar Heat Only Floor Boiler
Multi zone system using zone valves with standard zone relay (CRC200 optional) and indirect tank 50
System #24
Greenstar Heat Only Floor Boiler
Multi zone system using zone valves and Bosch Comfort Zone Manager (CZM100) and indirect tank 52
Appendices 54
Appendix A Comfort Room Controller (CRC100) Quick set-up guide 54
Appendix B Primary/Secondary Piping requirements for Greenstar Wall Boiler 56
Appendix C CRC200 Quick Set-up Guide / CRC200 Quick Set-up Guide for Outdoor Reset 57
Appendix D Wiring of Hydro-Level Low Water Cut-off for Greenstar Wall Boiler 59
Appendix E Wiring of Hydro-Level Low Water Cut-off for Greenstar Floor Boiler 60

Applications Manual Bosch Greenstar | 5
Bosch Thermotechnology Corp. Data subject to change
Explanation Of Symbols
Key To Symbols
Warnings
Warnings in this document are identified by a
warning triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent the risk
are not taken.
The following keywords are defined and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where
there is no risk to people or property.

6 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases No. . Changed
Released
Created
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Back-flow
preventer
Relief valve &
pressure
gauge
Condensate
drain
Room
Thermostat
(Use of CRC200 and
Outdoor Temperature Sensor for optional outdoor reset)
Note:Greenstar Internal circulator
can support a single zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate ow rates.
Purge
Drain
DISCLAIMER: Application drawings in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and licensed installers. It is expected
that installers have adequate knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and
applications involved. Drawings are not to scale. Refer to the boiler,
control and module installer
manuals for additional detailed
information.
Domestic
Cold Water
Domestic
Hot Water
Gas
Supply
PRV
Relief piping
Single Zone Combi Wall Boiler Baseboard
On/off Tstat Isoloation
Valve

Applications Manual Bosch Greenstar | 7
Bosch Thermotechnology Corp. Data subject to change
System #1
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
DHW thermostat
min
e
max
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Room Thermostat
Low Voltage
Wiring:
Line Voltage
ŹWire Main power supply (120 v) to White molex
Heatronic Settings:
ŹRemove factory jumper from terminal #2 & #4
inside Heatronic control and connect non-power
robbing thermostat (dry contacts only)
Outdoor Temperature Sensor (optional)
Heatronic Internal Wiring
B
B
4
2
1
A
F
97
8
LWCO
Supply Sensor
DHW Sensor
Dry contacts
Bosch Controls
Outdoor
Sensor
LN
red
storage
tank pump
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
External Boiler Junction box
120 Vac Supply
Ground
Neutral
Note: For Low Water Cutoff Wiring see
Appendix D of this manual
Źinstall CRC200 (see manual)
Źinstall Outdoor Temperature Sensor
ŹFollow CRC200 Quick
Set-up guide in Appendix C
If using CRC200 (Optional):
CRC200 (optional)
ŹOutdoor Temperature Sensor connect to terminals A & F
ŹCRC200 connect to terminals B & B

8 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases No. . Changed
Released
Created TK
02/20/15
DISCLAIMER: Application drawings in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and licensed installers. It is expected
that installers have adequate knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and
applications involved. Drawings are not to scale. Refer to the boiler,
control and module installer
manuals for additional detailed
information.
Domestic
Cold Water
Domestic
Hot Water
Gas
Supply
CRC200
Single zone Combi wall boiler Baseboard
NSC Controls
Note:Greenstar Internal circulator
can support a single zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate ow rates.
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Isolation
valve
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Purge
Drain
PRV
Relief piping

Applications Manual Bosch Greenstar | 9
Bosch Thermotechnology Corp. Data subject to change
System #2
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
DHW thermostat
min
e
max
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
CRC200
Low Voltage
Wiring:
Line Voltage
ŹWire Comfort Room Controller (CRC200)
to Terminals B & B of Heatronic control
ŹWire Main power supply (120 v) to White molex
ŹSee Appendix C for CRC200 Quick Set-Up Guide
Heatronic Settings:
Heatronic Internal Wiring
B
B
4
2
1
A
F
97
8
LWCO
Supply Sensor
DHW Sensor
Dry contacts
Bosch Controls
Outdoor
Sensor
External Boiler Junction box
120 Vac Supply
Ground
Neutral
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix D of this manual

10 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Room
Thermostat
Purge
Drain
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed information.
Domestic
Cold Water
Domestic
Hot Water
Gas
Supply
PRV
Relief piping
Note: Internal Low Loss
Header in closed position
Note: additional expansion
tank shown – internal
expansion tank in combi boiler
models may be adequate for
standard systems -see boiler
manual for details.
Note :Greenstar Internal circulator
can support a primary zone loop
not to exceed 4 gpm at 12 feet of
head. See pump curves in manual for pump capacities at
alternate flow rates.
Single Zone Combi floor boiler
Baseboard On/off Thermostat (Use of CRC200 and
Isoloation
Valve
Outdoor Temperature Sensor for optional outdoor reset)

Applications Manual Bosch Greenstar | 11
Bosch Thermotechnology Corp. Data subject to change
System #3
Room
Thermostat
BUS TT out sen LWCO DHW sen
123 4 5 6
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
DHW thermostat
min
e
max
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Neutral
120 V Line
Ground
gniriWegatloVeniLgniriWegatloVwoL
Heatronic Settings:
Low Voltage
ŹRemove factory jumper from terminal #2 and
connect non-power robbing thermostat (dry contacts
only) to terminal #2
Wiring:
Line Voltage
ŹWire Main power supply (120 v) to White molex
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix E of this manual
CRC200 Outdoor
Temperature
Sensor
If using CRC200 (Optional):
ŹInstall CRC200 (see manual)
Ź,QVWDOO2XWGRRU7HPSHUDWXUH6HQVRU
Ź)ROORZ&5&4XLFN6HWXSJXLGHLQ$SSHQGL[&
ŹOutdoor Temperature Sensor connect to terminal #3 (OUT SEN)
ŹCRC200 connect to terminal #1 (BUS)

12 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Isolation
valve
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Supply
Sensor
Purge
Drain
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed information.
Domestic
Cold Water
Domestic
Hot Water
Gas
Supply
PRV
Relief piping
CRC200
Note: Internal Low Loss
Header in closed position
Note: additional expansion
tank shown – internal
expansion tank in combi boiler
models may be adequate for
standard systems -see boiler
manual for details.
Note:Greenstar Internal circulator
can support a primary zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate flow rates.
Single Zone Combi floor boiler Baseboard NSC Controls

Applications Manual Bosch Greenstar | 13
Bosch Thermotechnology Corp. Data subject to change
System #4
BUS TT out sen LWCO DHW sen
123 4 5 6
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
DHW thermostat
min
e
max
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Neutral
120 V Line
Ground
gniriWegatloVeniLgniriWegatloVwoL
CRC200
Heatronic Settings:
Low Voltage
ŹWire Comfort Room Controller (CRC200)
to Terminal # 1 on back of Greenstar FS Boiler
Wiring:
Line Voltage
ŹWire Main power supply (120 v) to White molex
ŹSee Appendix C for CRC200 Quick Set-Up Guide
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix E of this manual

14 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created TK
02/20/15 Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Room
Thermostat
Purge
Drain
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed information.
Gas
Supply
PRV
Relief piping
Note:Greenstar Internal circulator
can support a primary zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate flow rates.
Single Zone Heat only wall boiler Baseboard On/off Thermostat
Isoloation
Valve
(Use of CRC200 and
Outdoor Temperature Sensor for optional outdoor reset)

Applications Manual Bosch Greenstar | 15
Bosch Thermotechnology Corp. Data subject to change
System #5
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Low Voltage
Wiring:
Line Voltage
ŹWire Main power supply (120 v) to White molex
ŹRemove factory jumper from terminal #2 & #4
inside Heatronic control and connect non-power
robbing thermostat (dry contacts only)
Heatronic Settings:
ŹInstall CRC200 (see manual)
ŹInstall Outdoor Temperature Sensor
ŹFollow CRC200 Quick
Set-up guide in Appendix C
If using CRC200 (Optional):
Heatronic Internal Wiring
B
B
4
2
1
A
F
97
8
LWCO
Supply Sensor
DHW Sensor
Dry contacts
Bosch Controls
Outdoor
Sensor
External Boiler Junction box
120 Vac Supply
Ground
Neutral
LN
red
storage
tank pump
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix D of this manual
Room Thermostat
Outdoor Temperature Sensor (optional)
CRC200 (optional)
ŹOutdoor Temperature Sensor connect to terminals A & F
ŹCRC200 connect to terminals B & B

16 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created TK
02/20/15
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Isolation
valve
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Purge
Drain
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety considerations. The diagrams in
this manual are for reference use by code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and
applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed
information.
Gas
Supply
PRV
Relief piping
CRC200
Note:Greenstar Internal circulator
can support a primary zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate flow rates.
Single Zone
Heat only wall boiler Baseboard NSC Controls

Applications Manual Bosch Greenstar | 17
Bosch Thermotechnology Corp. Data subject to change
System #6
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
CRC200
ŹSee Appendix C for CRC200 Quick Set-Up Guide
Low Voltage
Wiring:
Line Voltage
ŹWire Comfort Room Controller (CRC200)
to Terminals B & B of Heatronic control
ŹWire Main power supply (120 v) to White molex
Heatronic Settings:
Heatronic Internal Wiring
B
B
4
2
1
A
F
97
8
LWCO
Supply Sensor
DHW Sensor
Dry contacts
Bosch Controls
Outdoor
Sensor
External Boiler Junction box
120 Vac Supply
Ground
Neutral
LN
red
storage
tank pump
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix D of this manual

18 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Room
Thermostat
Purge
Drain
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety
considerations. The diagrams in
this manual are for reference use by
code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed information.
Gas
Supply
PRV
Relief piping
Note: Internal Low Loss
Header in closed position
Note:Greenstar Internal circulator
can support a primary zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate flow rates.
Single Zone
Heat only floor boiler
Baseboard On/Off Thermostat
Isoloation
Valve
(Use of CRC200 and
Outdoor Temperature Sensor for optional outdoor reset)

Applications Manual Bosch Greenstar | 19
Bosch Thermotechnology Corp. Data subject to change
System #7
reset
eco
1
2
34
5
6
max
1
2
34
e
6
max
Boiler
Heating
Dial
1
2
3
Typical supply
temperatures
approx. 95 °F (35 °C)
approx. 109 °F (43 °C)
approx. 122 °F (50 °C)
4
5
6
approx. 140 °F (60 °C)
approx. 153 °F (67 °C)
approx. 167 °F (75 °C)
max Approx. 194 °F (90°C)
Application
Frost protection
Radiant floor heating
Panel radiator system
Cast Iron radiator system
Baseboard & convector system
Neutral
120 V Line
Ground
gniriWegatloVeniLgniriWegatloVwoL
Heatronic Settings:
Low Voltage
ŹRemove factory jumper from terminal #2 and
connect non-power robbing thermostat (dry contacts
only) to terminal #2
Wiring:
Line Voltage
ŹWire Main power supply (120 v) to White molex
LN
red
storage
tank pump
LN
black
ch pump
for unmixed heating
(Not Used)
LN
white
mains
120v/60 hz
Note: For Low Water Cutoff Wiring see
Appendix E of this manual
Room
Thermostat
BUS TT out sen LWCO DHW sen
123 4 5 6
CRC200 Outdoor
Temperature
Sensor
If using CRC200 (Optional):
ŹInstall CRC200 (see manual)
Ź,QVWDOO2XWGRRU7HPSHUDWXUH6HQVRU
Ź)ROORZ&5&4XLFN6HWXSJXLGHLQ$SSHQGL[&
ŹOutdoor Temperature Sensor connect to terminal #3 (OUT SEN)
ŹCRC200 connect to terminal #1 (BUS)

20 |Bosch Greenstar Applications Manual
Bosch Thermotechnology Corp.Data subject to change
Bosch
State Bases
No. . Changed
Released
Created
DISCLAIMER: Application drawings
in this manual are conceptual only
and do not purport to address all
design, installation, code, or safety considerations. The diagrams in
this manual are for reference use by code officials, designers and
licensed installers. It is expected that installers have adequate
knowledge of national and local
codes, as well as accepted industry
practices, and are trained on
equipment, procedures, and
applications involved. Drawings are
not to scale. Refer to the boiler, control and module installer
manuals for additional detailed
information.
Gas
Supply
Note: Internal Low Loss
Header in closed position
CRC200
Note:Greenstar Internal circulator
can support a primary zone loop not to exceed 4 gpm at 12 feet of head. See pump curves in manual for pump capacities at alternate flow rates.
Single Zone Heat only floor boiler Baseboard NSC Controls
Baseboard
Expansion
Tank
Auto-Fill
Air
Eliminator
Isolation
valve
Back-flow
preventer
Relief valve &
pressure gauge
Condensate
drain
Purge
Drain
PRV
Relief piping