Bryant 355MAV User Manual download pdf (Page 7)

CAUTION: UNIT DAMAGE HAZARD

DO NOT use wire brush or other sharp object to inspect

or dislodge materials in secondary heat exchangers as

failure of the secondary heat exchanger may occur. Flush

with water only.

10. Reassemble inducer assembly by reversing items 5-7.

Tighten vent coupling clamp screw(s) to 15 in.-lb of torque.

NOTE: If seal between the inducer housing and the collector box

is damaged in any way, it must be repaired. To repair, apply

sealant releasing agent such as PAM cooking spray or equivalent

(must not contain corn or canola oil, aromatic or halogenated

hydrocarbons which can cause an inadequate seal to occur) to

inducer housing. (See Fig. 11.) Apply a small bead of G.E. RTV

162, G.E. RTV 6702, or Dow-Corning RTV 738 sealant to groove

in collector box.

11. Refer to furnace wiring diagram and reconnect wires to

inducer motor and pressure switches or connectors.

12. Reconnect pressure tubes to pressure switches. See diagram

on main furnace door for proper location of tubes. Be sure

tubes are not kinked. (See Fig. 9.)

13. Turn on gas and electrical supplies to furnace.

14. Check furnace operation through 2 complete heat operating

cycles. Check area below inducer housing, vent pipe, and

condensate trap to ensure no condensate leaks occur. If

leaks are found, correct the problem.

15. Check for gas leaks.

Fig. 9—Furnace Pressure and Drain Tubing Diagram

A00351

Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below.

Tube location when used in DOWNFLOW application

Tube location when used on

HORIZONTAL - RIGHT application

Condensate Trap; Factory Installed

in Blower Shelf

Condensate Trap on

RIGHT Side

Condensate Trap on

LEFT Side

Tube location when used in UPFLOW application

Tube location when used on

HORIZONTAL - LEFT application

(Blower access panel removed)

1. All tubing must be connected securely and routed to avoid kinks and traps.

2. Pressure tubing must always slope away from pressure switch to collector box connection as shown.

3. HORIZONTAL-LEFT installations require the collector box pressure tube to be relocated between the inducer housing and

the blower shelf to prevent a trap.Refer to the Installation Instructions for further details.

NOTE:

325400-201 REV. C

(LIT - BOTTOM)

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BOX

DRAIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR BOX DRAIN TUBE

(BLUE)

INDUCER HOUSING (MOLDED) DRAIN TUBE

(BEHIND COLLECTOR BOX DRAIN TUBE)

FIELD-INSTALLED

FACTORY-SUPPLIED DRAIN TUBE

COUPLING (LEFT DRAIN OPTION)

FIELD-INSTALLED FACTORY-

SUPPLIED DRAIN TUBE

FIELD-INSTALLED

FACTORY-SUPPLIED

1/2-IN. CPVC STREET

ELBOWS (2) FOR LEFT

DRAIN OPTION

FIELD-INSTALLED

FACTORY-SUPPLIED DRAIN

TUBE COUPLING (RIGHT

DRAIN OPTION)

COLLECTOR BOX TUBE (GREEN)

CONDENSATE TRAP

CAP

PLUG

CAP

COLLECTOR BOX

DRAIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BOX DRAIN TUBE

(BLUE)

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

CONDENSATE TRAP

COLLECTOR BOX TUBE

(GREEN)

Condensate Trap on LEFT

Side Optional

CAP

COLLECTOR BOX DRAIN TUBE

(BLUE)

COLLECTOR BOX DRAIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR BOX TUBE (GREEN)

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BOX

EXTENSION TUBE

CONDENSATE TRAP

INDUCER HOUSING DRAIN TUBE (VIOLET)

COLLECTOR BOX

EXTENSION TUBE

PLUG

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BOX DRAIN TUBE

(BLUE)

COLLECTOR BOX TUBE

(GREEN)

CONDENSATE TRAP

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

COLLECTOR BOX EXTENSION TUBE

COLLECTOR BOX DRAIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR BOX EXTENSION

DRAIN TUBE

COUPLING

CAP

GAS VALVE

DRAIN TUBES ROUTED IN

FRONT OF GAS VALVE

PLUG

CAP

COLLECTOR BOX DRAIN TUBE

(BLUE & WHITE STRIPED)

CONDENSATE TRAP

COLLECTOR BOX EXTENSION DRAIN TUBE

COLLECTOR BOX

EXTENSION TUBE

COLLECTOR

BOX TUBE

(GREEN)

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

COLLECTOR BOX TUBE (PINK) RELOCATE TUBE BETWEEN BLOWER SHELF AND

INDUCER HOUSING FOR 040,060, AND 080 HEATING INPUT FURNACES

DRAIN TUBE

COUPLING

COLLECTOR BOX

DRAIN TUBE (BLUE)

AUXILIARY "J" BOX

RELOCATED HERE

CAP

PLUG

COLLECTOR BOX DRAIN TUBE (BLUE)

COLLECTOR BOX TUBE (GREEN)

COLLECTOR BOX TUBE (PINK)

COLLECTOR BOX DRAIN TUBE

(BLUE AND WHITE STRIPED)

COLLECTOR BOX

EXTENSION TUBE

CONDENSATE TRAP

INDUCER HOUSING DRAIN TUBE (VIOLET)

BURNER ENCLOSURE PRESSURE

REFERENCE TUBE ASSEMBLY

BURNER ENCLOSURE PRESSURE

REFERENCE TUBE ASSEMBLY

BURNER ENCLOSURE

PRESSURE REFERENCE

TUBE ASSEMBLY

BURNER ENCLOSURE PRESSURE

REFERENCE TUBE ASSEMBLY

BURNER

ENCLOSURE

PRESSURE

REFERENCE

TUBE ASSEMBLY

BURNER

ENCLOSURE

PRESSURE

REFERENCE TUBE

ASSEMBLY

TUBE ROUTING

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Bryant 355MAV User Manual Page 7

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