Bryant 362AAN Users Information Heres HOW Your Heating System Works, III. Lighting Your Furnace

USER'S INFORMATION

I.HERE'S HOW YOUR HEATING SYSTEM WORKS

The furnace operates automatically. It is controlled by a thermostat which you set at the temperature most comfortable to you. When the inside temperature drops below this setting, your thermostat will turn on heating system.

When thermostat calls for heat, power from transformer energizes fan control board. The fan control energizes ignition control. The ignition control lights burner automatically.

The electronic fan control automatically turns on blower after 30 sec. Fan on control is not adjustable. The air which is moved over heat exchanger by the blower is warmed and passes through ducts to room registers.

3.Set thermostat to lowest setting.

4.Turn on electric power to furnace.

5.Open oil supply valve.

6.Check all connections to ensure there are no leaks.

III. LIGHTING YOUR FURNACE

CAUTION: This furnace is equipped with an interrupted type electronic ignition system. DO NOT ATTEMPT TO LIGHT WITH A MATCH.

When thermostat is satisfied, the circuit is de-energized and primary control shuts off burner. The blower continues to run until selectable fan off time period has expired.

The heat sensing switch performs as furnace high-temperature limit switch. If furnace overheats for any reason, the limit switch opens, breaking circuit to burner. The blower motor is energized, and as unit cools, the limit switch closes. This relights burner, but unless overheating condition is corrected, furnace will cycle on limit.

→This unit is equipped with an interrupted ignition electronic control. If main burner does not ignite within 30 sec from call for heat, the control locks out. The red button on top of control must be depressed for 3 sec in order to reset control. The control CANNOT be reset from room thermostat.

II.PREPARING YOUR FURNACE FOR OPERATION

Before attempting to put your furnace into operation for the heating season, you should perform the following procedures:

WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury, or loss of life.

1.Open all warm-air registers and make sure all return-air grilles are unobstructed.

2.If a humidifier is installed with your system, open water supply valve.

→ DANGER: HIGH VOLTAGE AT IGNITOR. Severe electrical shock, personal injury, or death could result.

1.This appliance is equipped with an ignition device which automatically lights burner. Do NOT try to light burner by hand.

2.After preparing furnace for heating operation (see previous section) and checking for oil, proceed as follows.

3.For heating/cooling system, set thermostat to HEAT and fan to AUTO. Set thermostat to desired room temperature and turn on electrical power to furnace.

4.The burner should light and system should be controlled by thermostat.

IV. TURNING OFF YOUR FURNACE

Follow these simple procedures to put your furnace into "retire- ment" for the summer.

1.Set thermostat to lowest setting.

2.Turn off all electrical power to appliance.

3.Turn off oil supply.

4.If applicable, turn off water supply to humidifier.

5.If furnace blower will be necessary for cooling system, remember to turn electrical power back on when needed for air conditioning.

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© 1997 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 Ð12Ð Printed in U.S.A. 362a1051 Catalog No. BDP-3336-203