Service - Lennox Allied Air A80DF Installation Instructions Manual

Warm air gas furnace downflow air discharge
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Thermostat Heat Anticipation
Set the heat anticipator setting (if adjustable) according to
the amp draw listed on the wiring diagram that is attached
to the unit.
NOTE: Do not secure the electrical conduit directly to the
air ducts or structure.
Electrical
1.
Check all wiring for loose connections.
2.
Check for the correct voltage at the furnace (furnace
operating). Correct voltage is 120VAC ± 10%.
3.
Check amp-draw on the blower motor with inner
blower panel in place.
Unit Nameplate__________ Actual _______________
Blower Speeds
Follow the steps below to change the blower speeds.
1.
Turn off electrical power to furnace.
2.
Remove blower access panel.
3.
Disconnect existing speed tap at integrated control
speed terminal.
NOTE: Termination of any unused motor leads must
be insulated.
4.
Place unused blower speed tap on integrated control
"PARK" terminal or insulate.
5.
Refer to blower speed selection chart on unit wiring
diagram for desired heating or cooling speed. See
Blower performance data beginning on the next page.
6.
Connect selected speed tap at integrated control
speed terminal.
7.
Resecure blower access panel.
8.
Turn on electrical power to furnace.
9.
Recheck temperature rise.
Electronic Ignition
The integrated control has an added feature of an internal
control. The feature serves as an automatic reset device
for integrated control lockout caused by ignition failure.
This type of lockout is usually due to low gas line pressure.
After one hour of continuous thermostat demand for heat,
the control will break and remake thermostat demand to
the furnace and automatically reset the integrated control
to begin the ignition sequence.
507327-01

Service

ELECTRICAL SHOCK, FIRE, OR EXPLOSION
Failure to follow safety warnings exactly could result in
dangerous operation, serious injury, death or property
damage.
Improper servicing could result in dangerous operation,
serious injury, death, or property damage. Before
servicing, disconnect all electrical power to furnace.
When servicing controls, label all wires prior to
disconnecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.
At the beginning of each heating season, a qualified
technician should check the system as follows:
Blower
Check the blower wheel for debris and clean if necessary.
The blower motors are pre-lubricated for extended bearing
life. No further lubrication is needed.
The blower access panel must be securely in place
when the blower and burners are operating. Gas fumes,
which could contain carbon monoxide, can be drawn
into living space resulting in personal injury or death.
Filters
Filters are installed external to the unit. Filters should
be inspected monthly. Clean or replace the filters when
necessary to ensure that the furnace operates properly.
Replacement filters must be rated for high velocity airflow.
Flue And Chimney
1.
Check flue pipe, chimney and all connections for
tightness and to make sure there is no blockage.
2.
Check unit for proper draft.
Electrical
1.
Check all wiring for loose connections.
2.
Check for the correct voltage at the furnace (furnace
operating). Correct voltage is 120VAC.± 10%.
3.
Check amp draw on the blower motor with inner
blower panel in place.
Unit Nameplate___________ Actual______________
Issue 1809
WARNING
HAZARD.
WARNING
Page 31 of 34

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