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4.3 Field Wiring Diagrams
Option 1 - Factory Jumpers in Place
120 VAC Power
(Field Wiring)
L1 N
(HV)
1
L
N
POWER
Option 2 - Field Installed Room
Thermostat, Yellow J5 jumper removed
120 VAC Power
(Field Wiring)
L1 N
(HV)
1
L
N
POWER
Remove J1 if
External Limit
is Connected
18-CG03D1-4
54
(Field Supplied)
G
2
3
5
6
7
8
4
J2
LWCO
(ORANGE)
J1
J2
External
Limits
(e.g., LWCO)
(Field Supplied)
G
L1
2
3
6
7
8
5
4
J2
LWCO
(ORANGE)
J1
J2
Circ Pump
G
L1
N
9
10
11
13 14 15 16 17 18
12
L
N
PUMP
System Configuration
1. Continuous Pump Operation
2. Burner Cycles with Supply Water Thermostat
when Call from Room Thermostat is present;
Burner Operation is Prevented when Room
Thermostat is Satisfied
Setup
Circ Pump
1. Remove Yellow J5 jumper
(Field Supplied)
External Limits (where required)
1. Remove Black J1 jumper
2. Connect External Limit to 5 & 6 Terminals
G
N
9
10
11
13 14 15 16 17 18
12
L
N
PUMP
System Configuration
1. Continuous Pump Operation
2. Burner Cycles With Supply Water Thermostat
Setup
1. No changes needed
19
20
T
T
21
19
20
22
J4
T
T
(BLUE)
J4
Removed
Room Thermostat
(Field Supplied)
(LV)
21
22
23
24
J5
J4
(YELLOW)
(BLUE)
J4
J5
(LV)
23
24
J5
(YELLOW)
J5
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