1. The first consideration is to choose a compressor unit which will be of sufficient to handle the space being cooled. Find the manufacturer whose units meet your general specifications as to price and availability, and then locate a unit to accommodate your living space needs.

2. Read the box carefully to determine if the existing ductwork available in the dwelling fits the specifications of the unit. If an adjustment to the ductwork is needed, you may need to consult a professional HVAC company unless you feel that you can install the needed items properly. Inadequate ductwork can impair the efficient cooling of your living space and correcting it properly is worth the extra cost.

3. Secure any recommended hardware needed to complete the installation.

4. The new unit will function best when seated on a level concrete pad. Be certain that you are able to secure the requisite pad and its proper placement to join with the electrical and other necessary connections where they are to enter the house.

5. Be certain to follow all installation instructions precisely as the unit is being hooked up, especially any safety concerns. If you are unfamiliar with any of the electrical hook-up procedures, be sure to ask someone to help who has handled that type of job before.

6. Be sure that you are fully informed about the requirements of the system before attempting to install the inside thermostat to make the unit turn on automatically. Make sure you know the proper maintenance of both the air conditioner and the thermostat to allow the unit to last at maximum longevity.

 
Step One: Use the manual control handle on the automatic gas valve to turn off the gas to the main burner and pilot. Allow at least 5 minutes for built up gas to disperse before proceeding. Use extreme caution and take more time if your fuel is bottled gas; it doesn’t dissipate as quickly.

 
Step Two: Once the gas has dissipated, set the thermostat well below room temperature. Turn the manual control handle to PILOT and light the pilot, holding the handle there for a minute. Then release the handle and turn it to ON.

Adjusting the Pilot Flame: The Pilot flame should be blue and should cover the thermocouple. Before adjusting the flame turn the thermostat down and turn off the power to the system. Then reset the thermostat when done.

 
Cleaning the Pilot Orifice: One cause of trouble lighting the pilot light, is the orifice may be plugged. To clean the orifice, you will need to shut off the gas supply.

 Step One: Turn the gas inlet handle to a right angle with the pipe.

Step Two: Disconnect the thermocouple tube and the pilot gas line form the automatic gas valve.

Step Three: Remove the bracket holding the pilot and the thermocouple.

Step Four: Use a stiff wire brush to clean out the orifice and reattach the bracket, pilot gas line, and the thermocouple tube.

Step Five: Turn on the gas and relight the pilot light.