INTRODUCTION
The model PG9M 4-way multipoise, Gas-Fired, Category IV, direct-vent and non-direct vent, condensing furnace is available in model sizes
ranging in input capacities of 40,000 to 138,000 Btuh.
CAUTION: MINOR PROPERTY DAMAGE
Failure to follow this caution may result in minor property damage.
Local codes may require a drain pan under entire furnace and condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
APPLICATIONS
PROCEDURE 1—GENERAL
Some assembly and modifications are required for furnaces installed in any of the 4 applications shown in Fig. 3. All drain and pressure tubes are
connected as shown in Fig. 6. See appropriate application instructions for these procedures.
PROCEDURE 2—UPFLOW APPLICATIONS
An upflow furnace application is where furnace blower is located below combustion and controls section of furnace, and conditioned air is
discharged upwards.
A.
Condensate Trap Location (Factory-Shipped Orientation)
The condensate trap is factory installed in the blower shelf and factory connected for UPFLOW applications. A factory-supplied tube is used to
extend the condensate trap drain connection to the desired furnace side for field drain attachment. See Condensate Trap Tubing (Factory-Shipped
Orientation) section for drain tube extension details. (See Fig. 5.)
B.
Condensate Trap Tubing (Factory-Shipped Orientation)
NOTE:
See Fig. 6 or tube routing label on main furnace door to confirm location of these tubes.
Fig. 6—Factory-Shipped Upflow Tube Configuration
(Shown With Blower Access Panel Removed)
A00288
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
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)
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
PLUG
CONDENSATE
TRAP
Fig. 7—Alternate Upflow Tube Configuration and
Trap Location
A00289
COLLECTOR BOX
TUBE (PINK)
CONDENSATE
TRAP
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX
DRAIN TUBE (BLUE)
INDUCER
HOUSING
DRAIN TUBE
(VIOLET)
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
PLUG
—8—
Содержание PG9MAA
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