Bryant 4-WAY MULTIPOISE TWO-STAGE CONDENSING GAS FURNACE 352AAV Instrucciones de operaciones descargar pdf (Pagina 47)

A99118

Fig. 48 -- Inducer Housing Drain Tube Cap

If a 2-stage heating thermostat is to be used, move SW-1 to ON

position at end of furnace installation. This overrides built-in

control process for selecting high and low fire and allows the

2-stage thermostat to select gas heating modes. The W2 from

thermostat must be connected to W2 on control terminal block.

(See Fig. 32 and 50--57.)

Before operating furnace, check each flame rollout manual reset

switch for continuity. If necessary, press and release button to

reset switch. The blower compartment door must be in place to

complete the 115-v circuit to the furnace.

A99119

Fig. 49 -- Filling Condensate Trap

FIRE HAZARD

Failure to follow this caution may result in intermittent unit

operation or performance satisfaction.

This furnace is equipped with a manual reset limit switch in

the burner box area. The switch will open and shut off power

to the gas valve if a flame rollout or overheating condition

occurs in the burner enclosure area. DO NOT bypass the

switch. Correct inadequate combustion-air supply, component

failure, or restricted flue gas passageway before resetting

the switch.

CAUTION

Step 2 -- Prime Condensate Trap With Water

UNIT MAY NOT OPERATE

Failure to follow this caution may result in intermittent unit

operation or performance satisfaction.

Condensate trap must be PRIMED or proper draining may not

occur. The condensate trap has internal chambers which can

ONLY be primed by pouring water into the inducer drain side

of condensate trap.

CAUTION

1. Remove upper inducer housing drain connection cap. (See

Fig. 48.)

2. Connect field-supplied 1/2-in. (13 mm) ID tube to upper

inducer housing drain connection.

3. Insert field-supplied funnel into tube.

4. Pour 1 quart of water into funnel/tube. Water should run

through inducer housing, overfill condensate trap, and

flow into open field drain. (See Fig. 49.)

5. Remove funnel and tube from inducer housing and replace

drain connection cap and clamp.

Step 3 -- Purge Gas Lines

After all connections have been made, purge the gas lines and

check for leaks.

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could result in a fire, explosion,

personal injury, or death.

never purge a gas line into a combustion chamber. Never test

for gas leaks with an open flame. Use a commercially

available soap solution made specifically for the detection of

leaks to check all connections, as specified in “Gas Piping”

and “Start-up Adjustment, and Safety Check” sections of

these instructions.

WARNING

Step 4 -- Sequence of Operation

Using schematic diagram in Fig. 36, follow the sequence of

operation through the different modes. Read and follow diagram

very carefully.

NOTE: If power interruption occurs during “call for heat”

(W/W1 or W/W1 and W2), the control will run the blower for the

selected blower off delay period after power is restored, if the

thermostat is still calling for gas heating. The amber LED will

flash code 12 during this period, after which the LED will be ON

continuous as long as no faults are detected. After this period, the

furnace will respond to the thermostat normally.

The blower door must be installed for power to be conducted

through blower door interlock switch ILK to furnace control

352AAV

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Bryant 4-WAY MULTIPOISE TWO-STAGE CONDENSING GAS FURNACE 352AAV Instrucciones de operaciones Pagina 47

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