1017952-A
Page 13
FIG. 13
WIRING
This appliance is equipped with a three prong power cord with grounding plug. For your protection against shock hazard, this
appliance should be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding
prong from this plug.
NOTE:
If any of the original wire supplied with this appliance
has to be replaced, it must be replaced with type 105ºC wire
or its equivalent.
CAUTION:
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper
and dangerous operation.
WARNING:
THIS IS A GAS-FIRED APPLIANCE. KEEP THE AREA CLEAR OF GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS. ALL COMBUSTIBLE MATERIAL MUST BE KEPT CLEAR OF THIS
AREA TO AVOID FIRE OR EXPLOSION.
!
Verify proper operation after servicing.
Pressure
Switch
Black
Gas
Valve
Purple
Red
White
Black
Black
Black
Green
Black
Circulating
Blower
Draft Inducer
CMB Blower
Circuit Board
Transformer
L1
ACC
ACB COOL
Red
Orange
Yellow
Limit
Switch
Thermostat
R
G
W
C
HEDV25-A
HEDV40-A
PICTORIAL
WIRING DIAGRAM | HEDV253A, HEDV254A, HEDV403A & HEDV404A
HEDV25-A
HEDV40-A
LADDER
GROUND
24V
Gas Valve
Limit Switch
Draft Inducer
Pressure Switch
115 VAC
Thermostat 24 VAC
Circulating Blower
Circuit Board
24 V
AC