Bryant 393AAV instruction manual IV. Electrical Controls and Wiring, Ð5Ð

						FIELD 24-V WIRING
						FIELD 115-, 208/230-, 460-V WIRING
						FACTORY 24-V WIRING
						FACTORY 115-V WIRING
			NOTE 2			THERMOSTAT
		FIVE WIRE		W C R	G Y		FIELD-SUPPLIED
						TERMINALS
		THREE-WIRE					DISCONNECT
	HEATING-ONLY						208/230- OR
BLOWER DOOR SWITCH
							460-V
							THREE
BLK	BLK			W			PHASE
WHT	WHT		C	R
			O
			N				208/230-V
	GND	GND	T				SINGLE
115-V FIELD-		AUXILIARY	R	G			PHASE
			O
	SUPPLIED	J-BOX	L	C			GND
DISCONNECT				NOTE 1		CONDENSING
				Y		UNIT
			24-V			TWO
		TERMINAL				WIRE
			BLOCK
		FURNACE		NOTES: 1.	Connect Y-terminal in furnace as shown for proper blower operation.
				2. Some thermostats require a "C" terminal connection as shown.

3. If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.

A98521

Fig. 5±Heating and Cooling Application Wiring Diagram

(5.) Repeat foregoing procedures until each cell in furnace has been cleaned.

(6.) Using vacuum cleaner, remove residue from each cell.

(7.) Using vacuum cleaner with soft brush attachment, clean burner assembly.

(8.) Reinstall cell inlet plates and burner assembly. Care must be exercised to center burners in cell openings.

10.Clean flame sensor with fine steel wool

11.Remove old sealant from center panel and collector box flange and apply new sealant to collector box flange and reinstall on center panel, making sure all 8 screws are secure.

NOTE: A releasing agent such as PAM cooking spray or equiva- lent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) and RTV sealant (G.E. 162, 6702, or Dow-Corning 738) are needed before starting installation. DO NOT substitute any other type of RTV sealant. G.E. 162 (P771-9003) is available through RCD in 3-oz tubes.

12. Reinstall relief box and inducer assembly.

NOTE: If inducer assembly gasket is damaged, use RTV sealant to seal inducer assembly to collector box.

NOTE: A releasing agent such as PAM cooking spray or equiva- lent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) and RTV sealant (G.E. 162, 6702, or Dow-Corning 738) are needed before starting installation. DO NOT substitute any other type of RTV sealant. G.E. 162 (P771-9003) is available through RCD in 3-oz tubes.

f.Hot surface ignitor.

g.Flame-sensing electrode

h.Flame rollout switch(es), if applicable.

14.Reinstall vent connector to furnace flue collar. After fully assembling vent connector to furnace flue collar, securely fasten vent connector to flue collar with 2 field-supplied, corrosion-resistant, sheet metal screws located 180 degrees apart and midway up the collar.

15.Turn electrical power and gas to ON.

16.Set thermostat and check furnace for proper operation.

17.Verify blower airflow and speed changes between heating and cooling.

18.Check for gas leaks.

WARNING: Never use a match or other open flame to check for gas leaks. Use a soap-and-water solution. A failure to follow this warning could result in fire, personal injury, or death.

19. Replace control access door.

IV. ELECTRICAL CONTROLS AND WIRING

CAUTION: There may be more than 1 electrical supply to the unit. Check accessories and cooling the unit for additional electrical supplies.

13.Reconnect wires to the following components:

a.Blocked vent safeguard switch.

b.Inducer motor.

c.Pressure switch.

d.Limit overtemperature switch(es).

e.Gas valve.

The electrical ground and polarity for 115-v wiring must be maintained properly. Refer to Fig. 5 for field wiring information and to Fig. 7 for furnace wiring information.

NOTE: If the polarity is not correct, the STATUS LED on the control will flash rapidly and prevent the furnace from heating. The control system also requires an earth ground for proper operation of the control and flame-sensing electrode.

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