Lennox HVAC Unit LGT180H5V

Verify local code requirements with gas company or authorities

Refer to the LGT Installation, Operation and Maintenance instruction

Inspect connecting lines for evidence of oil leaks

Inspect connecting lines for evidence of refrigerant leaks

Inspect coil for evidence of oil leaks

Inspect coil for evidence of refrigerant leaks

Preliminary and Seasonal Checks

Ensure unit is installed according to instructions and codes

Inspect all electrical wiring for loose connections and tighten as required

Check refrigerant lines for good condition and ensure they do not rub against the cabinet or other lines

Check voltage against the range listed on the nameplate

Is the voltage within the range listed on the nameplate?

Recheck voltage and amp draw with unit running

Is the voltage within range with the unit running?

Verify local code requirements with gas company or authorities

Refer to the LGT Installation, Operation and Maintenance instruction

Check the charge using the liquid temperature plots in section IIICHARGING

Check with gas company or authorities for local code requirements

Refer to the LGT Installation, Operation and Maintenance instruction

Connect test gauge to the outlet pressure tap on the gas valve

Start the unit and call for second stage heat

Wait five minutes for the unit to reach steady state

Observe the flame stability and color

Compare manifold pressure to values in TABLE 24

Disconnect heating demand after obtaining accurate reading

Check all wiring for loose connections

Check for correct voltage at unit (unit operating)

Check amp-draw on both condenser fan motor and blower motor

Verify compliance with local code requirements

Refer to the LGT Installation, Operation and Maintenance instruction for more information