Burner Flame; Secondary Heat Exchangers; Flushing Collector Box And Drainage System - Carrier 58MSA Service And Maintenance Instructions

Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below.
Condensate Trap; Factory Installed
in Blower Shelf
(Blower access panel removed)
COLLECTOR BOX TUBE
(PINK)
COLLECTOR BOX TUBE
(GREEN)
INDUCER HOUSING (MOLDED) DRAIN TUBE
(BEHIND COLLECTOR BOX DRAIN TUBE)
COLLECTOR BOX DRAIN TUBE
(BLUE)
FIELD-INSTALLED
FACTORY-SUPPLIED DRAIN TUBE
COUPLING (LEFT DRAIN OPTION)
FIELD-INSTALLED FACTORY-SUPPLIED
DRAIN TUBE
Condensate Trap on
LEFT Side
CAP
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX DRAIN TUBE
(BLUE & WHITE STRIPED)
COLLECTOR BOX
EXTENSION TUBE
CONDENSATE TRAP
BURNER ENCLOSURE PRESSURE
REFERENCE TUBE ASSEMBLY
INDUCER HOUSING DRAIN TUBE (VIOLET)
Tube location when used on
HORIZONTAL - LEFT application
AUXILIARY "J" BOX RELOCATED HERE
PLUG
CAP
BURNER ENCLOSURE
PRESSURE REFERENCE
TUBE ASSEMBLY
COLLECTOR BOX
EXTENSION TUBE
CONDENSATE TRAP
DRAIN TUBE
COLLECTOR BOX EXTENSION DRAIN TUBE
NOTE:
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.
Fig. 8—Furnace Pressure and Drain Tubing Diagram

BURNER FLAME

MANIFOLD
Fig. 9—Burner Flame
TUBE ROUTING
Tube location when used in UPFLOW application
BURNER ENCLOSURE
PRESSURE REFERENCE
TUBE ASSEMBLY
CAP
PLUG
COLLECTOR BOX DRAIN
TUBE
(BLUE & WHITE STRIPED)
CONDENSATE TRAP
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE COUPLING
(RIGHT DRAIN OPTION)
FIELD-INSTALLED
FACTORY-SUPPLIED 1/2-IN.
CPVC STREET ELBOWS (2)
FOR LEFT DRAIN OPTION
Tube location when used in DOWNFLOW application
COLLECTOR BOX
DRAIN TUBE (BLUE)
PLUGGED END
PLUG
COLLECTOR BOX
EXTENSION TUBE
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX DRAIN TUBE
(BLUE & WHITE STRIPED)
COLLECTOR BOX
TUBE (GREEN)
INDUCER HOUSING
DRAIN TUBE
(VIOLET)
COLLECTOR BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX TUBE (PINK)
COUPLING RELOCATE TUBE BETWEEN BLOWER
SHELF AND INDUCER HOUSING FOR
040,060, AND 080 HEATING INPUT
FURNACES
BURNER
A89020
6
COLLECTOR BOX TUBE
(PINK)
COLLECTOR BOX TUBE (GREEN)
COLLECTOR BOX DRAIN TUBE
(BLUE)
CONDENSATE TRAP
COLLECTOR BOX DRAIN
TUBE
(BLUE & WHITE STRIPED)
INDUCER HOUSING DRAIN
TUBE (VIOLET)
DRAIN TUBE COUPLING
DRAIN TUBES ROUTED IN
FRONT OF GAS VALVE
GAS VALVE
Tube location when used on
HORIZONTAL - RIGHT application
COLLECTOR BOX DRAIN TUBE
(BLUE)
PLUG
CAP
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX DRAIN TUBE
(BLUE AND WHITE STRIPED)
INDUCER HOUSING DRAIN TUBE (VIOLET)
Never use matches, candles, flame, or other sources of
ignition to check for gas leakage. Use a soap-and-water
solution. Failure to follow this warning could result in a fire,
personal injury, or death.
18. Replace main furnace door.

SECONDARY HEAT EXCHANGERS

NOTE: The condensing side (inside) of the secondary heat
exchangers CANNOT be serviced or inspected. A small number of
bottom outlet openings can be inspected by removing the inducer
assembly. See Flushing Collector Box and Drainage System
section for details on removing inducer assembly.
Step 5—Flushing Collector Box and Drainage
System
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Disconnect inducer motor and pressure switch wires or
connectors.
Condensate Trap on LEFT
Side Optional
BURNER ENCLOSURE
PRESSURE REFERENCE
TUBE ASSEMBLY
CAP
PLUG
COLLECTOR BOX DRAIN TUBE
(BLUE & WHITE STRIPED)
INDUCER HOUSING DRAIN TUBE
(VIOLET)
Condensate Trap on
RIGHT Side
PLUG
CAP
COLLECTOR BOX DRAIN TUBE
(BLUE)
COLLECTOR BOX TUBE
(PINK)
COLLECTOR BOX TUBE
(GREEN)
COLLECTOR BOX EXTENSION TUBE
BURNER ENCLOSURE PRESSURE
REFERENCE TUBE ASSEMBLY
CONDENSATE TRAP
COLLECTOR BOX
EXTENSION DRAIN TUBE
COLLECTOR BOX EXTENSION TUBE
COLLECTOR BOX TUBE (PINK)
BURNER ENCLOSURE
PRESSURE REFERENCE
TUBE ASSEMBLY
COLLECTOR BOX
EXTENSION TUBE
CONDENSATE TRAP
324999-201 REV. A
(LIT. BOTTOM)
A99102