Filter
Top Products
Installation & Operation Manual
46
8 Field wiring
AUX. DEVICE
PILOT SUPPLY
24VAC
GND
AUX. DEVICE
PROVING
GAS PRESSURE
SWITCH
FLOW
SWITCH
ALARM
CONTACTS
RUNTIME
CONTACTS
SYSTEM
SENSOR
DHW TANK
SENSOR
OUTDOOR
SENSOR
SHIELD GROUN
D
0-10VDC EXTERNAL
GND CONTROL
DHW THERMOSTAT
R
W
ROOM THERMOSTAT /
ZONE CONTROL
A
B
SHIELD GROUND
SEQUENCING
LOW WATER
CUTOFF
CN1
CN2
CN3
CN4
CN5
C
NO
NC
C
NO
NC
AUX. DEVICE
RELAY
HIGH GAS
PRESSURE SWITCH
(500 ONLY)
LOW GAS
PRESSURE SWITCH
(500 ONLY)
FLOW SWITCH
TANK THERMOSTAT
WALL THERMOSTAT /
ZONE CONTROL
SYSTEM SUPPLY SENSOR
OUTDOOR SENSOR
BUILDING
MANAGMENT
SYSTEM
LOW WATER
CUTOFF
AUX. DEVICE
PROVING SWITCH
COM
NO
A
A
B
A
B
SHIELD
SHIELD
FROM
PREVIOUS
BOILER
TO
NEXT
BOILER
(AUX) DHW TANK SENSOR
Figure 8-3 Low Voltage Field Wiring Connections