Optional Accessories; Start−Up And Performance Checklist - Lennox Merit Series13ACD Installation Instructions Manual

Merit series 13acd units

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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

Set the lever or dial to the desired temperature

Setting Levers

setpoints for both heating and cooling. Avoid

frequent temperature adjustment; turning the unit

off then back on before 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

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

The temperature indicator displays the actual room

Indicator

temperature.

PROGRAMMABLE THERMOSTATS

Your

Lennox

system

Start−Up and Performance Checklist

Job Name

Job Location

Installer

Unit Model No.

Nameplate Voltage

Rated Load Ampacity

Maximum Fuse or Circuit Breaker

Electrical Connections Tight? -

Indoor Blower RPM

Discharge Pressure

Leak Checked? - Properly Insulated? -

Refrigerant Lines:

Fully Opened? - Caps Tight?

Service Valves:

Voltage With Compressor Operating

505366M 01/08

continuous

indoor

blower

may

controlled

Serial No.

Compressor

Indoor Filter clean? -

S.P. Drop Over Indoor (Dry)

Suction Pressure

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.