4
Installation Configurations
These units can be installed on a work platform, secured to roof
trusses in the attic, suspended from hangers on floor joists in the
crawl space, or installed on blocks. See proper section and figures
for detailed installation instructions.
NOTE
: Pan extension is needed for both horizontal left and right
applications. DO NOT DISCARD.
FURNACE ATTACHMENT
Attach coil to furnace
The attachment plates (3) and filler plate (1) are packaged together
and placed in the coil carton. Remove these items, verifying the
number of pieces. Use the following procedure to attach CNPHP
horizontal coil to furnace.
NOTE
: Remove shipping brace from both ends of casing prior to
installation. Also remove corrugated shipping block from inside
the right end of casing prior to installation.
1. Three attachment plates are used to attach coil to furnace.
Application determines which end of the coil will be
attached to the furnace.
2. Use self--tapping screws to mount attachment plates to coil
casing. See Fig. 5.
A05419
Fig. 5 -- Mount Attachment Plates
3. Connect furnace snugly against coil casing.
4. Use self--tapping screws to attach furnace. See Fig. 6.
Self-Tapping Screws
Drill After Coil
Is Installed
A05420
Fig. 6 -- Attach Coil to Furnace
5. Seal joint between coil casing and furnace to create air--tight
seal using locally--approved materials.
NOTE
: If the coil and furnace are different widths, refer to Fig. 4
and Tables 1 & 2.
HORIZONTAL ATTIC INSTALLATION
Construct work platform to support coil/furnace combination
1. Construct work platform, using material in platform that
will support the weight of an installer or a service person.
2. Place work platform in front of discharge end of furnace.
3. Secure platform to building joists.
Install coil
To suspend CNPHP:
1. Cut metal plumbers strap to desired lengths.
2. Attach metal plumbers strap to four corners of coil casing
(see Fig. 7).
3. Use a minimum of two screws per corner to attach
plumbers strap to casing.
4. Position and secure coil in front of furnace discharge end.
5. Make sure coil is level for proper condensate drainage.
6. Using appropriate fasteners for duct type, connect supply--
air duct to coil.
HORIZONTAL CRAWL SPACE INSTALLA-
TION
As an alternate to horizontal attic installation, the CNPHP
horizontal coil can be installed in a crawl space by mounting on
suitable blocks, pads or by hanging from floor joists.
To suspend CNPHP:
1. Cut metal plumbers strap to desired lengths.
2. Attach metal plumbers strap to four corners of coil casing.
See Fig. 7.
3. Use a minimum of two screws per corner to attach metal
plumbers strap to casing.
4. Position and secure coil in front of furnace discharge end.
5. Make sure coil is level for proper condensate drainage.
6. Using appropriate fasteners from duct type, connect supply--
air duct to coil.
2 Screws for
Attachment
to Casing
Plumbers
Strap
A05421
Fig. 7 -- CNPHP Suspension with Plumbers Strap
REFRIGERANT LINES
Refrigerant lines must be configured per local building codes and
the guidelines outlined in the OD units installation instructions.
NOTE
: The filter dryer should be placed just before the indoor
unit.
Connect Refrigerant Liquid and Suction Lines
For matched and mismatched systems, use line sizes recommended
in outdoor unit Installation Instructions.
