Lochinvar 80 - 285 User Manual Page 49

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Installation & Operation Manual
49
8 Field wiring (continued)
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 GROUND
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
AUX. DEVICE
RELAY
FLOW SWITCH
TANK THERMOSTAT
WALL THERMOSTAT /
ZONE CONTROL
SYSTEM SUPPLY SENSOR
OUTDOOR SENSOR
BUILDING
MANAGMENT
SYSTEM
AUX. DEVICE
PROVING SWITCH
COM
NO
A
A
B
A
B
SHIELD
SHIELD
FROM
PREVIOUS
BOILER
TO
NEXT
BOILER
(AUX) DHW SENSOR
LOW WATER
CUTOFF
Figure 8-3 Low Voltage Field Wiring Connections
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