CNPHP: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
NOTE: Applications inside [ ] allowed but not recommended. Grey area not permitted.
NOTE: Applications inside [ ] allowed but not recommended. Grey area not permitted.
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
).
A05419
Fig. 5 – Mount Attachment Plates
3. Connect furnace snugly against coil casing.
4. Use self-tapping screws to attach furnace (
).
5. Seal joint between coil casing and furnace to create air-tight seal
using locally-approved materials.
A05420
Fig. 6 – Attach Coil to Furnace
NOTE:
If the coil and furnace are different widths, refer to
&
.
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 (
).
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.
Table 1 – Heat Pump Right Hand Applications
Furnace Width- In. (mm)
Coil Width- In. (mm)
17.5 (445)
21 (533)
24.5 (622)
14 (356)
B, C
[B,C]
17.5 (445)
A
B, C, [D, E]
[B,C]
21 (533)
A
B, C, [D, E]
24.5 (622)
A
Table 2 – Air Conditioner Applications
Furnace Width- In. (mm)
Coil Width- In. (mm)
17.5 (445)
21 (533)
24.5 (622)
14 (356)
B, C, G, H
[B,C,G,H]
17.5 (445)
A, F
B,C,G,H [D,E,I,J]
[B,C,G,H]
21 (533)
A, F
B,C,G,H [D,E,I,J]
24.5 (622)
A, F
Self-Tapping Screws
Drill After Coil
Is Installed
