GB312 with AM10: Outdoor reset, DHW and multi-zones with relay panel
GB312 with 4323 Control and the FM456 Module
GB312 with 4323 Control and Full System Functionality
GB312
Logamatic 4323 with FM456
KR
PS
FA
MAG
SA
SH2
FV2
KR
PH2
SA
FK
SH1
FV1
KR
PH1
WH
PZB
PZ
FW
KR
EK
EK
FA
FK
FV
FW
KR
MAG
PH
PS
PZ
PZB
SA
SH
WH
Inlet Water
Outside Sensor
System Flow Sensor
Heating Zone Temperature Sensors
DHW Tank Sensor
Check Valve
Expansion Tank
Circulation Pump - Heating Zone
DHW Load Pump
Recirculating Pump
Boiler Pump
Shut-off Valve
(reccomended)
Mixing Valve
Low Loss Header (LLH)
GB312
PZ
KR
EK
Logamatic 4323 with FM456
KR
FW
SH2
PS
FA
SA
FV
KR
PH2
THV
FK
WH
MAG
B
Z
P
B
Z
P
1)
EK
FA
FK
FV
FW
KR
MAG
PH
PS
PZ
PZB
SA
SH
THV
WH
Inlet Water
Outside Sensor
System Flow Sensor
Heating Zone
Temperature Sensors
DHW Tank Sensor
Check Valve
Expansion Tank
Circulation Pump - Heating Zone
DHW Load Pump
Recirculating Pump
Boiler Pump
Shut-off Valve
(reccomended)
Mixing Valve
Themostatic Head
Low Loss Header (LLH)
GB312
KR
PZ
FW
PS
FA
MAG
SA
KR
PH2
SA
THV
KR
EK
KR
PH3
SA
THV
AM10
Multi-Zone
Relay Panel*
EK
FA
FW
KR
MAG
PH
PS
PZ
PZB
SA
THV
Inlet Water
Outside Sensor
DHW Tank Aquastat
Check Valve
Expansion Tank
Circulation Pump - Heating Zone
DHW Load Pump
Recirculating Pump
Boiler Pump
Shut-off Valve
(reccomended)
Thermostatic Head
* Third Party Product
PZB
GB312 Clearance Requirements
GB312 Boiler Pressure Drop
E
C
A
B
D
Top View
Dimension
Min.
Recommended
A
20"
28"
B
22"
28"
C
20"
28"
D
20"
28"
E
6"
14"
200-6
240-7
280-8
90-4
120-4
160-5
100
10
1
0.1
X
Y
1 10 100
X
Flow Rate in Gal/Min (GPM)
Y
Primary Pressure Drop in PSI
