Bryant instruction manual 355MAV Variable Speed Furnace Control

			HUM
			G
			R
			Y/Y2
			W/W1
			Com 24V
			W2
		DE
SEC-2	SEC-1	DEHUM	DE CONNECTION

DE CONNECTION

LOCATION

A99098

Fig. 33—355MAV Variable Speed Furnace Control

VARIABLE-SPEED￿

THERMIDISTATCONDENSING￿

FURNACE

24 VAC HOT	R
DEHUMIDIFY	DHUM

24 VAC COMM C

R

DEHUM

DE￿

NOTE 1

Com

NOTE 1 - Remove DE Connection￿ To Enable DEHUM Input

A98295

Fig. 34—Thermidistat Connection

NOTE: Furnace combustion-air and vent pipe connections are sized for 2-in. pipe. Any pipe size change should be made outside furnace casing in vertical pipe. (See Fig. 35.) This allows proper drainage of vent condensate.

Combustion-air and vent pipes must terminate together in same atmosphere pressure zone, either through roof or sidewall (roof termination preferred), using accessory termination kit. See Table 5 for required clearances.

Furnace combustion-air and vent pipe connections must be attached as shown in Fig. 37. Combustion-air intake plug fitting and inducer housing alternate vent cap may need to be relocated in some applications.

NOTE: Slope combustion-air and vent pipes a minimum of 1/4 in. per linear ft with no sags between hangers.

CAUTION: When combustion-air pipe is installed above a suspended ceiling, pipe must be insulated with 3/8-in. thick Armaflex-type insulation. Combustion-air pipe should also be insulated when it passes through warm, humid space.

An abandoned masonry chimney may be used as a raceway for properly insulated and supported combustion-air and vent pipes. Each furnace must have its own set of combustion-air and vent pipes and be terminated individually, as shown in Fig. 39, 40, 44 and 45.

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