manufacturer’s instructions enclosed with thermostat for general installation procedure.
Compressor
Units are shipped with compressor mountings factory- adjusted and ready for operation. Caution: Do not loosen
compressor mounting bolts.
Heater Kit Accessory (if used)
The unit is fully equipped for cooling operation without auxiliary heat. A heater kit accessory may also be used.
To install the heater kit accessory (see Figure 7):
1.Disconnect the power and remove the heater compart- ment access panel.
2.Disconnect the plug separating the high voltage wire harness. Remove the high voltage wire harness plug and discard.
3.Remove the heater blockoff by removing the four screws holding it in place.
4.Insert the heater into the control panel and fasten in the same mounting holes.
5.Plug the heater wiring harness into the wire harness on the control assembly. Field wiring of the auxiliary heater is separate from the unit power supply. Wire the power supply wiring for the heater to the appropriate connections on the heater kit.
6.Replace the heater compartment access panel and reconnect the power.
Removal of Unit from Common Venting System
When an existing furnace is removed from a common venting system serving other appliances, the venting system is likely to be too large to properly vent the remaining attached appliances.The following test should be conducted with each appliance while the other appliances connected to the common venting system are not in operation.
1.Seal any unused openings in the common venting system.
2.Visually inspect the venting system for proper size and horizontal pitch and determine there is no block- age or restriction, leakage, corrosion, or other deficien- cies which could cause an unsafe condition.
3.Insofar as is practical, close all building doors and windows between the space in which the appliances remaining connected to the common venting system
Page 6
Heater Kit Accessory Installation
Heater
Blockoff
Heater
Compartment
Access
Panel
Heater Kit
Figure 7
are located and other spaces in the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.
4.Following the lighting instructions, place the unit being inspected in operation. Adjust the thermostat so the appliance will operate continuously.
5.Test for spillage at the draft control relief opening after 5 minutes of main burner operation. Use the flame of a match or candle.
6.Follow the preceding steps for each appliance con- nected to the common venting system.
7.After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers, and any other fuel burning appliance to their previous condition of use.
8.If improper venting is observed during any of the
above tests, the common venting system must be corrected. See National Fuel Gas Code, ANSI
Z223.1 (latest edition) or CAN/CGA B149.1 & .2 Canadian Installation Codes to correct improper operation of common venting system.
# 48392M005
