Lennox HVAC Unit LGT210H5M

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

Verify with gas company or authorities for local code requirements

Refer to the LGT Installation, Operation and Maintenance instruction

Enter the Btuh input from unit rating plate or gas heating capacity

Enter the Btuh per cubic foot of available gas

Calculate the number of cubic feet per hour required

Record the flow of gas through gas meter for two minutes

Check with gas company or authorities for local code requirements

Refer to the LGT Installation, Operation and Maintenance instruction

Filter Inspection and Maintenance

Access and check the following filters

Were all filters cleaned or replaced?

Ensure correct 'AIR FLOW DIRECTION' marking on filter frame when re-installing

Verify compliance with local code requirements with gas company or authorities.

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

Remove lead from sensing electrode and install a 0-50DC microamp meter in series between the sensing electrode and the sensing lead.

Reconnect power and adjust thermostat for heating demand.

Record the flame current reading when flame is established.

Is the flame current reading within the acceptable range as per TABLE 25?

Check with gas company or authorities for local code requirements

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

Check manifold pressure at outlet pressure tap on unit gas valve GV1 and/or GV3

Is the manifold pressure within factory settings?

If manifold pressure is incorrect, was the valve replaced?