START-UP, ADJUSTMENT, and Safety Check, General

Bryant 315AAV instruction manual START-UP, ADJUSTMENT, and Safety Check, Sidewall Venting, General

315AAV

Caution!! For the following applications, use the minimum vertical heights as specified below.

For all other applications, follow exclusively the National Fuel Gas Code.

FURNACE	VENT ORIENTATION	FURNACE INPUT	MIN. VENT	MIN. VERTICAL VENT
			DIAMETER	HEIGHT
ORIENTATION		(BTUH/HR)
			IN. (mm)*	FT. (M)**


Downflow	Vent elbow left, then up	154,000 132,000 110,000	5 (127)	12 (3.6)
	Fig. 36


Horizontal Left	Vent elbow right, then up	154,000 132,000	5 (127)	7 (2.1)
	Fig. 39


Horizontal Left	Vent Elbow up	154,000 132,000	5 (127)	7 (2.1)
	Fig. 40

Horizontal Left	Vent elbow right	154,000	5 (127)	7 (2.1)
	Fig. 41


Downflow	Vent elbow up then left	110,000	5 (127)	10 (3.0)
	Fig. 34

Downflow	Vent elbow up, then right	110,000	5 (127)	10 (3.0)
	Fig. 37

NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC.
*4---in. (102 mm) inside casing or vent guard
**Including 4 in. (102 mm) vent section(s)

The horizontal portion of the venting system shall slope upwards not less than 1/4-in. per linear ft. (21 mm/m) from the furnace to the vent and shall be rigidly supported every 5 ft. (1.5 M) or less with metal hangers or straps to ensure there is no movement after installation.

Sidewall Venting

This furnace is not approved for direct sidewall horizontal venting.

Per section 12.4.3 of the NFPA 54/ANSI Z223.1-2009, any listed mechanical venter may be used, when approved by the authority having jurisdiction.

Select the listed mechanical venter to match the Btuh input of the furnace being vented. Follow all manufacturer’s installation requirements for venting and termination included with the listed mechanical venter.

START-UP, ADJUSTMENT, AND SAFETY

CHECK

General

!WARNING

3.Gas supply pressure to the furnace must be greater than 4.5-In. W.C. (0.16 psig ) but not exceed 14-In. W.C. (0.5 psig).

4.Check all manual-reset switches for continuity.

5.Replace blower compartment door. Door must be in place to operate furnace.

6.Setup switch descriptions The variable speed furnace con- trol has DIP switches to select thermostat staging, blower off delay timings, air flow selection and other operational or service related functions. (See Fig. 26, 53 and Table 10.)

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts, and servicing furnaces.

FIRE HAZARD

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

This furnace is equipped with manual reset limit switches in the gas control area. The switches open and shut off power to the gas valve, if a flame rollout or overheating condition occurs in the gas control area. DO NOT bypass the switches. Correct problem before resetting the switches.

1.	Maintain 115-v wiring and ground. Improper polarity will
	result in rapid flashing LED and no furnace operation.
2.	Make thermostat wire connections at the 24-v terminal
	block on the furnace control. Failure to make proper con-
	nections will result in improper operation. (See Fig. 25 -