at the indoor unit (installed internal or external to the cabinet) or behind a return air grille in the wall or ceiling. Check the filter monthly and clean or replace it as needed.
2.Disposable Filter Disposable filters should be replaced with a filter of the same type and size.
NOTE If you are unsure about the filter required for your system, call your Lennox dealer for assistance.
3.Reusable Filter Many indoor units are equipped with reusable foam filters. Clean foam filters with a mild soap and water solution; rinse thoroughly; allow filter to dry completely before returning it to the unit or grille.
NOTE The filter and all access panels must be in place any time the unit is in operation.
4.Indoor Unit The indoor unit’s evaporator coil is equipped with a drain pan to collect condensate formed as your system removes humidity from the inside air. Have your dealer show you the location of the drain line and how to check for obstructions. (This would also apply to an auxiliary drain, if installed.)
Thermostat Operation
See the thermostat homeowner manual for instructions on how to operate your thermostat.
Preservice Check
If your system fails to operate, check the following before calling for service:
SVerify room thermostat settings are correct.
SVerify that all electrical disconnect switches are ON.
SCheck for any blown fuses or tripped circuit breakers.
SVerify unit access panels are in place.
SVerify air filter is clean.
SIf service is needed, locate and write down the unit model number and have it handy before calling.
Accessories
For update−to−date information, see any of the following publications:
SLennox XC14 Engineering Handbook
SLennox Product Catalog
SLennox Price Book
Start−Up and Performance Checklist
Job Name |
| Job no. |
| Date | |||
Job Location |
| City |
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| State | ||
Installer |
| City |
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| State | ||
Unit Model No. |
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| Serial No. |
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| Service Technician |
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Nameplate Voltage |
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Rated Load Ampacity |
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| Compressor |
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| Outdoor Fan |
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Maximum Fuse or Circuit Breaker |
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Electrical Connections Tight? | - |
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| Indoor Filter clean? - | Supply Voltage (Unit Off) |
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Indoor Blower RPM |
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| S.P. Drop Over Indoor (Dry) |
| Outdoor Coil Entering Air Temp. |
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Discharge Pressure |
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| 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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