Bryant 310AAV, 310JAV warranty Altitude Derate Multipler for U.S.A, Speed Selection

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

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

FURNACE ORIENTATION	VENT ORIENTATION	FURNACE INPUT(BTU/HR)	MINIMUM	MINIMUM VERTICAL VENT HEIGHT (FT)**
			VENT DIAMETER (IN.)*
Downflow	Vent elbow left, then up	154,000
		132,000	5	12
	Fig. 30
		110,000(036/-12 only)
Horizontal Left	Vent elbow right,	154,000
	then up		5	7
		132,000
	Fig. 33
Horizontal Left	Vent Elbow up	154,000	5	7
	Fig. 34	132,000
Horizontal Left	Vent elbow right	154,000	5	7
	Fig. 35
Downflow	Vent elbow up then left	110,000	5	10
	Fig. 28	(036/-12 only)
Downflow	Vent elbow up, then right	110,000	5	10
	Fig. 31	(036/-12 only)

NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC. *4 in. inside casing or vent guard

**Including 4 in. vent section(s)

Table 6–Altitude Derate Multipler for U.S.A.

ALTITUDE	PERCENT	DERATE MULTIPLIER
(FT)	OF DERATE	FACTOR*
0–2000	0	1.00
2001–3000	8–12	0.90
3001–4000	12–16	0.86
4001–5000	16–20	0.82
5001–6000	20–24	0.78
6001–7000	24–28	0.74
7001–8000	28–32	0.70
8001–9000	32–36	0.66
9001–10,000	36–40	0.62

* Derate multiplier factors are based on midpoint altitude for altitude range.

ON AND OFF

SWITCH

GAS PRESSURE

REGULATOR

ADJUSTMENT

INLET
PRESSURE	MANIFOLD
TAP
	PRESSURE TAP

A00157

Fig. 40—Redundant Automatic Gas Control Valve

a.Mechanical thermostat—Set thermostat heat anticipator to match the amp draw of the electrical components in the R-W circuit. Accurate amp draw readings can be obtained at the wires normally connected to thermostat subbase terminals, R and W. The thermostat anticipator should NOT be in the circuit while measuring current.

		BURNER
		ORIFICE
		A93059
	Fig. 41—Orifice Hole
	Table 7—Speed Selection
COLOR	SPEED	AS SHIPPED
White	Common	BLW
Black	High	COOL
Yellow†	Med-High	SPARE
Blue*	Med-Low	SPARE
Red*	Low	HEAT

*1/5 HP motor models: BLUE to HEAT, RED to SPARE.

† Not available on 1/5 HP motors.

NOTE: Continuous blower is the HEAT speed.

(1.) Remove thermostat from subbase or from wall.

(2.) Connect an amp meter as shown in Fig. 42 across the R and W terminals or R and W wires.

(3.) Record amp draw across terminals when furnace is in heating and after blower starts.

(4.) Set heat anticapator on thermostat per thermostat instructions and install on subbase or wall.

b. Electronic thermostat: Set cycle rate for 4 cycles per hr.

7.Adjust blower off delay

The blower off delay has 4 adjustable settings from 90 sec to 180 sec. The blower off delay jumpers are located on the furnace control board. (See Fig. 23.)

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