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WIRING
This appliance is equipped with a three prong grounding
plug. For your protection against shock hazard, this ap-
pliance should be plugged directly into a properly grounded
three-prong receptacle. Do not cut or remove the ground-
ing prong from this plug.
NOTE: If any of the original wire supplied with this ap-
pliance has to be replaced, it must be replaced with type
105-C wire or its equivalent.
CAUTION: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper and
dangerous operation.
Verify proper operation after servicing.
WARNING
THIS IS A GAS-FIRED APPLIANCE. KEEP THE
AREA CLEAR OF GASOLINE AND OTHER FLAM-
MABLE VAPORS AND LIQUIDS. ALL COMBUS-
TIBLE MATERIAL MUST BE KEPT CLEAR OF THIS
AREA TO AVOID FIRE OR EXPLOSION.
Page 12
Gas Valve
Pressure
Switch
Circulating
Blower
XFMR
L 1
EAC/LSPD
Heat
Hum
M 1
M 2
Black
White
Draft
Inducer
White
White
Neutrals
Flame
Sensor
Brown
White
Black
24 VAC
Transformer
Yellow
Yellow
Thermostat
Yellow
Yellow
White
Red
Black
Black
W
C
R
Y
MODEL HEDV 403, 404
Ignitor
Blue
Blue
High
Limit
Red
Red
Black
White
Green
Thermostat Limit Pressure Gas
Switch Switch Valve
Circulating
Blower
Draft
Inducer
Ignitor
Flame
Sensor
115 VAC
Primary
Transformer
Secondary
24 VAC
3 Amp
Fuse