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and reinserting the push pin. No tool is required to
push the pin back into the same slot in the fins.
5. If the push pin is loose and tends not to stay in place,
brush the fins with a fin brush (22 fins/in). Line up the
push pin a couple fins to the right or left of the original
hole and re−insert the pin.
THERMOSTAT OPERATION
Thermostat operations vary from one thermostat to
another. The following provides general operation
procedures. Refer to the user’s information manual
provided with your thermostat for specific operation
details.
Temperature
Setting Levers
Set the lever or dial to the desired temperature
setpoints for both heating and cooling. Avoid
frequent temperature adjustment; turning the unit
offthen back onbefore pressures can equalize
will put unusual stress on the unit’s compressor.
Fan Switch In AUTO or INT (intermittent) mode, the blower
operates only when the thermostat calls for heating
or cooling. This mode is generally preferred when
humidity control is a priority. The ON or CONT
mode provides continuous indoor blower
operation, regardless of whether the compressor
or furnace is operating. This mode is required when
constant air circulation or filtering is desired.
System Switch Set the system switch for heating, cooling or auto
operation. The auto mode allows the system to
automatically switch from heating mode to cooling
mode to maintain predetermined comfort settings.
Temperature
Indicator
The temperature indicator displays the actual room
temperature.
PROGRAMMABLE THERMOSTATS
Your Lennox system may be controlled by a
programmable thermostat. These thermostats provide the
added feature of programmable time-of-day setpoints for
both heating and cooling. Refer to the user’s information
manual provided with your thermostat for operation
details.
PRESERVICE CHECK
If your system fails to operate, check the following before
calling for service:
Make sure all electrical disconnect switches are ON.
Make sure the room thermostat temperature selector
AND the system switch are properly set.
Replace any blown fuses, or reset circuit breakers.
Make sure unit access panels are in place.
Make sure air filter is clean.
Locate and record unit model number before calling.
Optional Accessories
Refer to the Lennox 13ACD Engineering Handbook for the
latest available accessories for this unit. Below is a list of
accessories available at the time this instruction was
publish.
Optional Accessory Catalog Number Part Number
Compressor Start Kit 10J42 LB−31200BM
Loss of Charge Kit 94J47 LB−87620A
Sound Cover 69J03 69J0301
Replacement Liquid Line Drier 12L71 12L7101
Plastic Feet Kit 94J45 LB−87156A
Crankcase Heater − 40W 93M04 100499−01
High Pressure Kit 94J46 LB−87620A
Start−Up and Performance Checklist
Job Name Job no. Date
Job Location City State
Installer City State
Unit Model No. Serial No. Service Technician
Nameplate Voltage
Rated Load Ampacity Compressor Outdoor Fan
Maximum Fuse or Circuit Breaker
Electrical Connections Tight? Indoor Filter clean? Supply Voltage (Unit Off)
Indoor Blower RPM S.P. Drop Over Indoor (Dry) Outdoor Coil Entering Air Temp.
Discharge Pressure Suction Pressure Refrigerant Charge Checked?
Refrigerant Lines: Leak Checked? Properly Insulated? Outdoor Fan Checked?
Service Valves: Fully Opened? Caps Tight? Thermostat
Voltage With Compressor Operating Calibrated? Properly Set? Level?
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