Unit installation

11. CHECKOUT

Before engaging power to any system, ensure the

following:

A) All tools have been removed from the

equipment.

B) All wiring is attached, routed and properly

secured.

C) All panels (both mechanical and electrical)

are in place.

D) The thermostat system switch is placed into

the “OFF” position.

E) All co-workers have been warned that the

equipment is being energized.

2. System wiring may be checked by referring to the

wiring diagram located on the back of the wiring box

door.

3. Before beginning the check-out procedure,

thoroughly read the check-out instructions in either

the thermostat installation instructions or in the

owners manual provided with this product.

Keep in mind that the wall thermostat provides a

3 minute delay between off and on cycles. A 2.5

minute delay begins both as soon as the compressor

cycles off, and as soon as the thermostat becomes

energized. After completion of the 2.5 minute delay,

an additional 30 second delay will begin as soon as

the thermostat demands cooling.

There is also a 30 second delay between 1st and 2nd

stage cooling. This is to prevent both compressors

from starting simultaneously. To ensure that the

thermostat calls for 1st and 2nd stage cooling, verify

that the cool setpoint is well below actual indoor

temperature.

4. After complying with steps 1 through 3, engage

power to all systems and begin check-out procedure.

5. Test each thermostat function such as fan modes,

heat modes and cool modes to insure proper

operation.