Service manual

CChheecckk--OOuutt PPrroocceedduurree
With the power and gas supply turned off, set the thermostat to
its lowest setting.
1. If the unit has a standing pilot, turn on the gas supply only
and light the pilot according to the instructions on the unit’s
serial plate, then proceed with Step 2. If the unit is equipped
with an intermittent pilot ignition system, turn on the gas
supply to unit and proceed with Step 2.
2. Turn on power supply to unit. Nothing should happen.
3. Turn up the thermostat to call for heat. The power exhaust
motor should start, the centrifugal switch of the power
exhaust should close, and the main burner should light.
4. Turn the thermostat down again. The main burner and
power exhaust motor should shut off.
5. Check the power exhaust centrifugal switch for proper
function. To do this, remove the centrifugal switch lead on
limit control. Turn up the thermostat to call for heat. The
power exhaust motor should run, but the main burner should
not light.
6. Turn down the thermostat and allow the power exhaust
motor to stop running. Reconnect the centrifugal switch
lead to limit control. Recycle the unit as described in Steps
3 and 4.
If the unit does not operate in the sequence described above,
recheck all wiring until the necessary correction to the wiring is
found and corrected. Set the thermostat to the desired set point.
The unit is now ready for use.
All components must agree with their respective power source.
WWIIRRIINNGG LLEEGGEENNDD
LINE LOW
FACTORY
FIELD
WIRE NUT
IIMMPPOORRTTAANNTT::
After installing the power exhaust and adapter kit, as per instructions on front cover, and wiring the power venter per
Figure 7.1 for DJE, IJE, IHE and DHE models, use the following check-out procedure to check final installation.
H
G
T
To Thermostat
(By Others)
Terminal board on
XFMR located on duct
furnace junction box
To gas valve
or ignition
controller and
fan timer (if
supplied)
To fan timer
(if supplied)
to L2
to L1
To Limit Control
(removed from T)
R
R
CS BU
24V Relay
BU
34
POWER
EXHAUST
MOTOR
1
2
FFiigguurree 77..11
TTyyppiiccaall PPoowweerr EExxhhaauusstt WWiirriinngg MMooddeellss DDJJEE//DDHHEE//IIJJEE//IIHHEE
TTYYPPIICCAALL PPOOWWEERR EEXXHHAAUUSSTT WWIIRRIINNGG -- DDJJEE//DDHHEE//IIJJEE//IIHHEE
BL
77