Clearances To Combustibles - Carrier 58MVP080 Installation, Start-Up, And Operating Instructions Manual

This unit complies with CAN/CGA 2.3 M86, CAN/CSA C22.2 No. 0-M91, CSA C22.2
No.3-1988 standards.
This appliance is equipped only for altitudes 0 - 2,000 ft (0-610 m) for use with natural
gas and propane. A conversion kit, supplied by the manufacturer, shall be used to
convert to the alternate fuel or elevation.
This direct-vent, forced-air furnace is for indoor installation in a building constructed on
site. For installation in alcove or closet at minimum clearances from combustible material as
shown below, minimum front clearance for service is 30 inches (762 mm).
This furnace is for use with schedule-40 PVC, PVC-DWV, or ABS-DWV pipe, and must
not be vented in common with other gas-fired appliances. Construction through which
vent/air intake pipes may be installed is maximum 24 inches (600 mm), minimum 3/4 inches
(19 mm) thickness (including roofing materials).
Special venting system required. In Canada use certified venting system specified by
furnace manufacturer. See Installation Instructions provided with furnace. Flue gas
temperature 131°F (55°C) vent pressure positive.
++ For installation on combustible floors only when installed on special base No.
KGASB0201ALL.
Clearance shown is for air inlet and air outlet end.
*
Horizontal position: Line contact is permissible only between lines formed by
intersections of top and two sides of furnace jacket, and building joists, studs, or framing.
+ 120,000 BTU Input Furnaces require 1 inch bottom clearance to combustible materials.
CONDENSATE TRAP TUBING (FACTORY-SHIPPED ORIEN-
TATION)
NOTE: See Fig. 5 or tube routing label on main furnace door to
confirm location of these tubes.
1. Collector Box Drain, Inducer Housing Drain, Relief Port, and
Pressure Switch Tubes
These tubes should be factory attached to condensate trap and
pressure switch ready for use in UPFLOW applications. These
tubes can be identified by their connection location and also
by a color label on each tube. These tubes are identified as
follows: collector box drain tube (blue label), inducer housing
drain tube (violet label or molded), relief port tube (green
label), and pressure switch tube (pink label).
2. Condensate Trap Drain Tube
The condensate trap drain connection must be extended for
field attachment by doing the following:
a. Determine location of field drain connection. (See Fig. 2 or
5.)
NOTE: If internal filter is used, drain tube should be located to
opposite side of casing of return duct attachment to assist in filter
removal.
b. Remove and discard casing drain hole plug button from
desired side.
c. Install drain tube coupling grommet (factory supplied in
loose parts bag) in selected casing hole.
d. Slide drain tube coupling (factory supplied in loose parts
bag) through grommet so long end of coupling faces
blower.
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIAL
TOP BOTTOM
INCHES
1
0
1 ++
1
0+
Fig. 3—Clearances to Combustibles
SIDES BACK FRONT VENT
0 0 3 0
0 0 3 0
*
1 0 3 0
e. Cement 2 factory-supplied 1/2-in. street CPVC elbows to
rigid drain tube connection on condensate trap. (See Fig. 5.)
These elbows must be cemented together and cemented to
condensate trap drain connection.
NOTE: Failure to use CPVC elbows may allow drain to kink,
preventing draining.
f. Connect larger diameter drain tube and clamp (factory
supplied in loose parts bag) to condensate trap and clamp
securely.
g. Route tube to coupling and cut to appropriate length.
h. Attach tube to coupling and clamp securely.
CONDENSATE TRAP LOCATION (ALTERNATE UPFLOW
ORIENTATION)
An alternate location for the condensate trap is the left-hand side
of casing. (See Fig. 2 and 6.)
NOTE: If the alternate left-hand side of casing location is used,
the factory-connected drain and relief port tubes must be discon-
nected and modified for attachment. See Condensate Trap Tubing
(Alternate Upflow Orientation) section for tubing attachment.
To relocate condensate trap to the left-hand side, perform the
following:
1. Remove 3 tubes connected to condensate trap.
2. Remove trap from blower shelf by gently pushing tabs inward
and rotating trap.
3. Remove casing hole filler cap from casing hole. (See Fig. 2 or
6.)
4. Install casing hole filler cap into blower shelf hole where trap
was removed.
4
UPFLOW
DOWNFLOW
HORIZONTAL
A93060