6
fittings be used on the condensate pan. Do not over--tighten. Finger
tighten plus 1--1/2 turns. Be sure to install plastic plug in unused
condensate drain fitting.
NOTE
: If unit is located in or above a living space where damage
may result from condensate overflow, a field--supplied, external
condensate pan should be installed under the entire unit, and a
secondary condensate line (with appropriate trap) should be run
from unit into pan. Any condensate in this external condensate pan
should be drained to a noticeable place. As an alternative to using
an external condensate pan, some localities may allow the running
of a separate 3/4” (19 mm) condensate line (with appropriate trap)
to a place where condensate will be noticeable. The owner of the
structure must be informed that when condensate flows from the
secondary drain or external condensate pan, the unit requires
servicing or water damage will occur. To further protect against
water damage, install a float switch to shut the unit off if the water
in the secondary pan gets too high.
Install traps in condensate lines as close to coil as possible. See Fig.
8. Make sure that outlet of each trap is below its connection to
condensate pan to prevent condensate from overflowing drain pan.
Prime all traps, test for leaks, and insulate traps and lines if located
above a living area. Consult local codes for additional restrictions
or precautions.
Humidifier Application
When installing a humidifier in a system which contains an N--coil,
consideration must be given to location of coil slabs. See Fig. 9.
1. Care must be taken to prevent damage of N--coil when at-
taching humidifier to coil casing or plenum.
2. The models marked with an * in Table 1 are shipped with a
Caution Label to be applied to plenum to indicate slab loca-
tion. See Fig. 7. When these coils are removed from their
casing and applied directly into the plenum, affix this Cau-
tion Label to the right side of the plenum enclosure. This is
needed only in cases where the humidifier is not installed
with original equipment. Label will alert future service and
installation technicians about coil slab location.
3. Ensure that humidifier has adequate airflow.
3" (76)
A08339
Fig. 8 -- Condensate Trap
Supply
Evaporator
N-Coil
Upflow
Furnace
A05414
Fig. 9 -- Installation of Humidifier in System with N--Coil
Field-Supplied
Plenum
Field
Support
Shelf
Furnace
3
″
(76) min.
"A"
"B"
A08340
Fig. 10 -- Transition Required for Overhang Except for
Transition Coils
Copyright 2008 CAC / BDP
D
7310 W. Morris St.
D
Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 06/08
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: IM---CNPVP---02
Replaces: IM--- CNPVP--- 01
CNP
VP
/CNR
VP
