1018028-B
Page 12
CAUTION:
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper & dangerous operation. Verify
proper operation after servicing.
!
MAINTENANCE
TERMINAL BLOCK WIRING DIAGRAMS
TO REMOVE MAIN BURNER
FOR INSPECTION & CLEANING
1.
Turn thermostat to lowest setting and allow
the furnace to cool.
2.
Turn off all electric power to furnace.
3.
Remove lower grille.
4.
Disconnect gas supply to valve.
5.
Disconnect wires from gas valve.
6.
Remove 15 screws holding burner door to
burner box. Pull door forward to remove
complete burner, gas valve assembly.
7.
After inspecting and cleaning, place burner
assembly back into burner box and tighten
15 screws.
NOTE: Be sure door gasket is not damaged
and will effect a proper seal or pilot outage
will occur.
8.
Connect wires back to valve.
9.
Connect gas supply back to valve.
10.
Turn on electric to furnace.
11.
Follow lighting instructions, and replace
lower grille.
It is recommended that the furnace and all
components be inspected at least annually by a
qualified service technician. This should include
the burner, pilot, heat exchanger, and vent system.
Be sure that the flow of combustion and ventilation
air is not obstructed.
IMPORTANT: Keep burner & control compartment
clean. Vacuum control compartment at the start of
the heating season and as often as needed.
PROPER BURNER FLAME
The burner flame may be observed by raising the sight glass cover. A proper
flame will have a dark blue inner mantle that sits right on top of the burners with
a lighter blue outer mantle rising above the burner (See Figure 9 on page 11).
There may be some yellow where the pilot flame and burner flame meet. There
is no primary air adjustment on the burner, and proper flame is assured since the
correct manifold pressure and orificing has been done at the factory.
NOTE: It
is advised that the burner flames be checked at least twice during the heating
season for any changes in burner flame characteristics.
The appliance area must be kept clear and free from combustible materials,
gasoline, and other flammable vapors and liquids. This appliance is equipped
only for altitudes 0-2,000 feet. Heaters installed above 2,000 feet must be derated
4% for every 1,000 feet. For the proper orifice size, find the Model Number and
elevation on the orifice chart. Replace burner orifice. Orifice change must be
completed by a qualified installer or service technician.
Model Number
0 to
2,000’
2,000’ -
4,000’
4,000’ -
6,000’
6,000’ -
8,000’
8,000’ -
10,000’
NATURAL GAS
FIG
10: Orifice Chart for Specific Elevations
DVCF403C . . . . . . . . . . . . .
32
34
35
36
40
DVCF407C . . . . . . . . . . . . .
32
34
35
36
40
DVCF553C . . . . . . . . . . .
3.6mm
29
30
30
31
DVCF557C . . . . . . . . . . .
3.6mm
29
30
30
31
DVCF404C . . . . . . . . . . . . . 49
50
51
52
52
DVCF408C . . . . . . . . . . . . . 49
50
51
52
52
DVCF554C . . . . . . . . . . . . . 44
45
47
48
49
DVCF558C . . . . . . . . . . . . . 44
45
47
48
49
PROPANE GAS
ORDER KIT #49840
2287-1 High Altitude Kit
DVCF403, 404, 407 & 408 (C-H)
91122
Motor (White)
Fan/Limit Switch (Brown)
Motor (Green)
Motor (Black)
Power Cord (White)
Power Cord (Black)
Transformer (Black)
Transformer (Black)
Limit
Switch
(Blue)
Terminal
Board
Ground
(Green)
Power
Cord
(Green)
Fan
Switch
(Black)
DVCF553, 554, 557 & 558 (C-H)
91123
Motor (White)
Fan/Limit Switch (Brown)
Motor (Green)
Motor (Black)
Power Cord (Black)
Power Cord (White)
Transformer (Black)
Transformer (Black)
Limit
Switch
(Blue)
Terminal
Board Ground
(Green)
Power Cord
(Green)
Selector
Switch
(Black)
Selector Switch (Red)
Motor (Red)
