StyleCrest Installation Manual

8
Figure 9. Round Duct Connector Installed
SCREWS
MOUNTING
PLATE
ROUND DUCT
CONNECTOR
14” SUPPLY
CONNECTION
Closet Installation
For closet installations, a coil box is recommended to be
installed with the furnace. In all configurations, return air
must meet requirements found in Minimum Unobstructed
Airflow section. See Figure 11 (page 9).
1. Cut return air opening in desired position in door or wall,
preferably above top of furnace. Refer to the Minimum
Unobstructed Airflow section (page 3) for return air
opening requirements.
2. Insert four fasteners, securing grille to door or wall.
Downflow Furnaces
For typical unducted return air downflow applications,
an air-conditioner or heat-pump coil can be installed by
mounting the coil directly on top of the furnace without
adding sheet metal cavities or cutting and trimming wood
panels. Unducted return air systems may be used for
closet or alcove installations.
The steps below describe installation procedures for
an under-the-floor supply duct system with a ducted
or unducted return air system. Duct connectors are
recommended for this application. See Table 2 (page 7).
NOTE: Remove refrigerant line knockouts in furnace
only when installing indoor coil of an air conditioner or
heat pump system. Refer to instructions supplied with
accessory equipment.
1. Route 240V supply circuit(s) and 24V wiring to closet
or alcove. See Figure 17 (page 13) or Figure 18 (page
13)
for locations.
2. Remove furnace front door and slide back until bottom
slots in rear of unit engage with both tabs of optional
rear mounting plate. If mounting plate is not used, an
equivalent method of securing the rear of the unit may
be used as long as it prevents displacement during
transport if used in a manufactured home.
NOTE: The furnace does not need to be positioned
against the rear mounting plate. The tabs will engage
into the slots and allow approximately 1/2” of furnace
adjustment front to back and side to side.
4. Secure front of unit with one or more fasteners at
mounting hole(s) provided or at tie-down tab. See Figure
17 (page 13)
or Figure 18 (page 13).
5. See Electrical Wiring section (page 10) to complete
furnace installation.
Upflow Furnaces
The following steps describe installation instructions for
an overhead supply duct system with a return air system
that can be either over the floor (unducted) or through
the floor (ducted).
NOTE: Remove refrigerant line knockouts in furnace only
when installing indoor coil from an air conditioner or heat
pump system.
Refer to instructions supplied with accessory equipment.
Over-the-Floor Return Air System (Non-Ducted)
1. If floor underneath furnace is made of combustible
material, locate a pan fabricated of non-combustible
material with 1” upturned flanges under furnace return
air opening. See Figure 12 (page 9).
2. Use optional upflow stand (refer to the technical
specifications literature for part number) with filters or
construct a suitably braced mounting platform in closet.
See Figure 13 (page 9).
3. Route 240V supply circuit(s) and 24V wiring to closet.
See Figure 17 (page 13) or Figure 18 (page 13) for
appropriate locations.
4. Position optional coil cabinet onto upflow stand or
mounting platform and secure with three or more
fasteners.
5. Position furnace in upflow mode onto coil cabinet and
secure with two or more fasteners.
6. Use optional upflow duct connector or field supplied
connector to attach furnace to overhead supply duct.
See Figure 13.
20"
(508 mm)
24 3/4"
(629 mm)
A/C or H/P
Coil
Wall
Coil Air
Filters
Return Air Grille
56"
(1423 mm)
29"
( 737 mm)
27"
(686 mm)
Furnace
Front
18"Nearest
Wall or Partition
Figure 10. Alcove Installation
NARROW
DUCT
NARROW
DUCT
DUCT CONNECTOR TABS
STAPLES OR SHEET
METAL SCREWS
DUCT
FLAP
NARROW
DUCT
DUCT
CONNECTOR
SHEET METAL
SCREWS
Figure 8. Narrow Ducts