Orifice Hole, Fire and Explosion Hazard

Bryant 315AAV instruction manual Orifice Hole, Fire and Explosion Hazard

BURNER

ORIFICE

A93059

Fig. 50 - Orifice Hole

THERMOSTAT SUBBASE TERMINALS WITH THERMOSTAT REMOVED (ANITICIPATOR, CLOCK, ETC.,

MUST BE OUT OF CIRCUIT.)

HOOK-AROUND AMMETER

R Y W G

10 TURNS

FROM UNIT 24-V

CONTROL TERMINALS

EXAMPLE:	5.0 AMPS ON AMMETER	=	0.5 AMPS FOR THERMOSTAT
EXAMPLE:	10 TURNS AROUND JAWS	=	ANTICIPATOR SETTING
	10 TURNS AROUND JAWS		ANTICIPATOR SETTING
			A96316

Fig. 51 - Amp. Draw Check with Ammeter

Start-Up Procedures

!WARNING

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could cause personal injury, death or property damage.

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for detection of leaks to check all connections.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, or death.

Blower access door switch opens 115-v power to control. No component operation can occur unless switch is closed. Caution must be taken when manually closing this switch for service purposes.

1.Purge gas lines after all connections have been made.

2.Check gas lines for leaks.

3.To Begin Component Self-Test:

Remove Blower Access Door. Disconnect the thermostat R lead from furnace control board. Manually close blower door switch. Turn Setup DIP switch SW1-6 ON. (See Fig. 26, 53 and Table 10.)

NOTE: The furnace control allows all components, except the gas valve, to be run for short period of time. This feature helps diagnose a system problem in case of a component failure. Component test feature will not operate if any thermostat signal is present at the control.

Refer to service label attached to furnace or See Fig. 52. Component test sequence is as follows:

a.Inducer motor starts on high-speed and continues to run until Step d. of component test sequence.

b.Hot surface igniter is energized for 15 sec., then off.

c.Blower motor operates for 15 sec.

d.Inducer motor goes to low-speed for 10 sec., then stops.

e.After component test is completed, one or more status codes (11, 25, or 41) will flash. See component test section of service label (Fig. 52) in furnace for explan- ation of status codes.

NOTE: To repeat component test, turn setup switch SW1-6 OFF, then back ON.

4.Turn setup DIP switch SW1-6 OFF. Reconnect R lead to furnace control board, release blower door switch and re- install blower access door.

5.Operate furnace per instruction on inner door.

6.Verify furnace shut down by lowering thermostat setting below room temperature.

7.Verify furnace restarts by raising thermostat setting above room temperature.