Left Inducer Position 35-2, Vent Connector

INDUCER ROTATION STEPS ON 35-2, 50-3 (See Figures 5A and 5B below)

1.Ensure all power to the furnace is disconnected.

2.Disconnect inducer wiring and pressure switch tubing.

3.Remove four screws securing inducer and inducer plate to flue box cover plate. (see figure 4A on page 9)

4.Place inducer plate and gasket in desired position and locate mounting holes required. NOTE: INDUCER PLATE AND GASKET MUST BOTH BE ROTATED.

NOTE: Any holes not concealed by the inducer gasket require the use of screws to plug the holes.

5.Secure inducer and inducer plate to flue box cover using four screws in the correct mounting position.

6.Carefully remove side panel knockout corresponding to the venting application and install cover (part #30763) underneath top panel using two screws (field supplied). In the event of a right hand discharge inucer application, the pressure switch will have to be relocated to the underside of the top panel. The pressure switch tubing will have to be cut to the length listed in Table 4 (below) if inducer is mounted in right hand configuration.

7.Reconnect inducer wiring and pressure switch tubing to the inducer

FIGURE 5A: LEFT INDUCER POSITION (35-2, 50-3)

		C2	C3
FF	N	C1

WARM AIR FURNACE

VENT CONNECTOR

The furnace may be vented with a listed single wall or Type B double wall vent connector to a B-Vent or lined masonry chimney. Most United States jurisdictions require a minimum 28-gauge galvanized single wall vent connector. Most Canadian jurisdictions require the vent connector to have corrosion resistance equivalent to 24-gauge galvanized sheet metal.

Observe the rules concerning clearance to combustibles.

The vent connector must be readily accessible for inspection, cleaning or replacement.

Keep the vent connector as short as possible by locating the furnace as close as practical to the vent or chimney. Avoid unnecessary turns or bends that create resistance to the flow of the vent gases. Fittings such as elbows add resistance to the vent connector.

Use Type B vent connectors in attics, crawl spaces, or other cold areas. Install thimbles that meet clearance to combustibles requirements and local code requirements if the vent connector must pass through a wall or partition constructed of combustible material. The preferred method to join vent connectors to a vent or chimney is by individual connections. If two vent connectors must be joined before the vent or chimney, use a correctly sized wye or tee-wye fitting as close to the vent or chimney as practical.

All furnace collars are 4 inch. When the United States ANSI Z223.1 / NFPA 54 or Canadian B149 venting tables specify the use of 3 inch venting, use a 4 to 3 reducer at the furnace collar. When the venting tables specify the use of 5inch venting, use a 5 to 4 reducer at the furnace collar.

Secure all single wall vent connector segments together with a minimum of three sheet metal screws per joint. Secure the vent connector to the furnace collar with a minimum of three sheet metal screws. Type B vent connectors do not require sheet metal screws since they have their own locking system.

FIGURE 5B: RIGHT INDUCER POSITION (35-2, 50-3)

TABLE 4: PRESSURE SWITCH TUBING LENGTH FOR RIGHT INDUCER POSITION (IN INCHES)

35-2	50-3	70-3	70-4	85-3	85-4
12 1/2”	12 1/2”	13 1/2”	13 1/2”	13 1/2”	13 1/2”
100-3	100-4	100-5	115-5	135-5
13 1/2”	13 1/2”	13 1/2”	13 1/2”	13 1/2”

F80A specifications

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