At least once each year, a qualified service technician should check out the unit. Supply fans, evaporator coils and air filters should be inspected monthly.
WARNING! Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer. A copy of this IOM should be kept with the unit
See Startup section for information on air flow adjustment and refrigerant charge adjustment
Condensate Drain Pans
WARNING! Once a year, before the unit is in operation for the heating season, a qualified service technician should inspect all flue product carrying areas of the furnace and main burners for continued safe operation
DANGER! LEAK CHECK GAS PIPE The gas pipe in the unit should be checked for leaks before startup. Leak checking is the responsibility of the installing contractor. All connections should be checked for leaks annually after installation. Failure to leak che
WARNING! Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Startup and service must be performed by a Factory Trained Service Technician. A copy of this IOM should be kept wit
WARNING! Disconnect all electrical power sources before servicing the unit. More than one power source may be provided. Failure to do so may result in injury or death from electrical shock or entanglement in moving parts.
CAUTION! If any original wiring needs to be replaced it must be replaced with wiring materials suitable for 105ºC. Label all wires prior to disconnection when servicing unit. Wiring errors can cause improper or dangerous operation. Verify proper operation
Condensate Drainage System Inspection
Furnace Exhaust Vent Termination
Turn off all electrical power to the unit before inspection and servicing.
The furnace should be inspected annually by a qualified service agency. Check condition and determine.
Furnace Operation Check
E-Coated Coil Cleaning
WARNING! Electric shock hazard. Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts
CAUTION! High velocity water from a pressure washer or compressed air should only be used at a very low pressure to prevent fin and/or coil damages. The force of the water or air jet may bend the fin edges and increase airside pressure drop. Reduced unit
CAUTION! Harsh chemicals, household bleach, or acid cleaners should not be used to clean outdoor or indoor e-coated coils. These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion and attack the E-coating. If there is dir
Recommended Coil Cleaner – Step 1
Recommended Chloride Remover – Step 2
Warranty Protection – Step 1
Complete the coil cleaning following these steps:
NOTE: Coils should always be cleaned / back flushed, opposite of airflow to prevent impacting the dirt into the coil.
Now move over slightly overlapping the area just completed and repeat above. Continue until all coil areas on the inside of the unit have been rinsed
Warranty Protection – Step 2
Complete the coil chloride (salt) removal following these steps:
CAUTION! Blower wheels must be inspected for excessive dust build up periodically and cleaned if required. Excessive dust build up on blower wheels may cause an unbalanced state; leading to vibration and/or component failure. Damages due to excessive dust
Phase and Brownout Protection Module
DPM Setup Procedure