Product Manual

Form #43471010
-18- Mar 09
C. LOW VOLTAGE (24V) THERMOSTAT CONNECTIONS – SINGLE HEATER PER THERMOSTAT
G
BL BL
BKBK
R
W
BK
BK
W
BK
BK
BK
W
DRAFT
INDUCER
MOTOR
GAS VALVE
AIR SWITCH
25V
(GND)
25V GND
(BURNER)
VALVE VALVE
TRANSFORMER
120V PRIMARY
24V SECONDARY
A
G
R
IGNITION MODULE
HIGH VOLTAGE
CABLE
ELECTRODE
GAP 3/16
CONTINUE TO
ADDITIONAL
HEATERS
NEUTRAL
120V
GROUND
L1
L2
TERMINAL
BLOCK
FACTORY WIRING
FIELD WIRING
CONTROL CABINET
MONITORING
LIGHT
34 5
1
LOW VOLTAGE
THERMOSTAT (24V)
BK
BK
BK
W
R
FIELD INSTALLED
RELAY KIT
PART NO.
43274000
R
Order 24V Relay Kit (Part No. 43274020) for Low Voltage (24V) thermostat connection.
NOTES:
1. If any of the original wire as supplied with the appliance must be replaced, it must be replaced with wiring
material having a temperature rating of at least 105ºC. (18 Ga. CSA 600V Type TEW)
2. When connecting the supply circuit to the heater, wiring material having a minimum size of 14 AWG and a
temperature rating of at least 90ºC shall be used.
3. A replaceable 3-amp fuse (1-1/4” long) is fitted to the Ignition Control Module.
D. LOW VOLTAGE (24V) THERMOSTAT CONNECTIONS – MULTIPLE HEATERS PER THERMOSTAT
Ground
Neutral
Hot (120VAC)
Fused
Disconnect
Switch
Service
Switch
Heater 1
Continue To
Additional
Heaters
Service
Switch
Heater 2
Low Voltage
Thermostat (24V)
coil
C
R
G
NO
Fan Center Relay Part No. 30169000
Contact Rating: 120V, 40VA, 12A
(maximum of 6 heaters per relay)