National Comfort Products Comfort Pack U Series, Руководство по установке

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Installation Guide | Comfort Pack with 80% Gas Heat
Figure 6B
Secondary Air Shield Assembly
w/ End Cap Removed
Upper Burner Brackets
Burner Assembly
Retaining Track
Lower Burner Bracket
(one on each end) -
Place in the retaining track on the
secondary air shield assembly.
Burner Orifice
Burner orifice only needs to be replaced when a change in
gas is made. When ordering a replacement orifice, give BTUH
content and specific gravity of gas, as well as the model and
serial number of the unit. To prevent dropping the orifice into
the burner housing, block the venturi with something the size of
a credit card when removing the burner orifice. Be careful not to
damage the venturi tube and/or the bracket.
Ignition System
Igniter - Refer to Figure 6A and locate the igniter. Disconnect
the wire; remove the screw and the igniter. Clean the igniter
assembly with an emery cloth. Spark gap must be maintained to
1/8" (See Figure 7).
Flame Sensor - Refer to Figure 6A and locate the flame sensor.
Disconnect the wire; remove the screw and the flame sensor.
Clean with an emery cloth.
Figure 7
DUE TO HIGH VOLTAGE ON THE SPARK WIRE
AND ELECTRODE, DO NOT TOUCH WHEN
ENERGIZED. SEE HAZARD LEVELS, PAGE 5.
!
CAUTION
DSI Integrated Control Module
- The module monitors the
operation of the heater including ignition. The only replaceable
component is the 3 amp fuse. If the fuse is blown, the problem is
most likely an external overload. Correct the problem and replace
the fuse. Do not attempt to disassemble the control module.
However, each heating season check the lead wires for insulation
deterioration and good connections.
Proper operation of the direct spark ignition system requires
a minimum flame signal of 1.0 microamps as measured by a
microammeter.
For further information and check out procedure on the direct
spark ignition system, refer to the circuit board manufacturer’s
instructions supplied with the heater.
Venter Motor and Wheel Assembly
Remove dirt and grease from the motor casing. Venter motor
bearings are permanently lubricated. The DSI Integrated Control
Module controls and monitors operation of the venter motor. If
the contacts fail to close the venter motor will not run. If the
contacts fail to open, the venter motor will not shut off, preventing
the combustion air pressure switch from opening.
Follow these instructions for replacement of the venter motor
and wheel assembly. Keep all hardware removed to be used in
reassembling and installing the replacement parts.
1. Turn off the gas and disconnect the electric power.
2. Open the burner/control compartment access panel.
3. Disconnect the three venter motor wires at their terminal block
connections.
4. Holding the motor, remove the three screws that attach the
venter motor mounting plate to the venter housing. Remove
the motor and wheel assembly from the heater.
5. Re-assemble with the replacement venter motor and wheel
assembly.
6. Follow the wiring diagram to connect the venter wires.
7. Restore power to the heater and turn on the gas. Light,
following the instructions plate. Check for proper operation.
Replace the access panel.