Slant/Fin VGH-299-CH Installation And Service Manual page 120

System Example 5
BOILER
OS
T
ST
Figure 21-5
System Example 6
BOILER
OS
T
ST
Figure 21-6
120
RT
HEATING
ZONE
P1
LLH
FS P3
SNV
P2
RT
HEATING
ZONE
P1
LLH
P3
FS
SNV
SNV
P2
E93.1601EN032.C VGH installation manual
Low Voltage Connections
Name
RT Room thermostat
FS System temperature sensor
OS outdoor temperature sensor
ST Tank thermostat or sensor
LLH low loss header
T DHW indirect Tank
non-return valve (low resistance
SNV
type)
High Voltage Connections
P2 DHW indirect tank circulator
P1 boiler circulator
P3 System heating circulator
Low Voltage Connections
Name
RT Room thermostat
FS System temperature sensor
OS outdoor temperature sensor
ST Tank thermostat or sensor
LLH low loss header
T DHW indirect Tank
non-return valve
SNV
(low resistance type)
High Voltage Connections
P1 boiler circulator
P2 HWS primary circulator
P3 System heating circulator
Wire terminal
12-13
3-4
1-2
5-6
2-3-PE
4-PE-5
6-PE-7
Wire terminal
12-13
3-4
1-2
5-6
4-PE-5
2-3-PE
6-PE-7