Drainage - National Comfort Products CPE Series Installation Manual

Installation Manual for Comfort Pack Electric Units
The unit should be provided with support inside the building in
the area of the return air opening. The support should be high
enough to allow for return air provisions to the unit. To reduce
the possible transmission of sound and vibration, a resilient
material such as rubber or cork should be installed between the
support and the base of the unit. All spaces around the top, sides
and bottom of the exterior grille area should be caulked and
sealed to the wall, making sure that the openings for drainage in
the bottom edge are not blocked.
If the optional wall sleeve is used, caulk the spaces between the
sleeve and the wall. Completely fill the clearance on all sides
between the unit and the wall sleeve with a polyurethane foam
sealant (follow manufacturer's suggested application manual).
Provide the unit with support inside the building in the area of
the return air opening. Slide the unit into the wall sleeve and
fasten the unit to the sleeve with the five screws provided with
the sleeve.
NOTE: FOR EASE OF INSTALLATION, INSTALL
THE CABINET INTO THE WALL SLEEVE FIRST
WITHOUT THE COOLING CHASSIS. THEN SLIDE
COOLING CHASSIS IN AFTER CABINET IS IN
PLACE.

Drainage

The 3/4" I.D. flexible tubing included should be connected to the
Comfort Pack primary drain connection so that it can easily be
disconnected if the cooling chassis must be removed. A trap
at least 2" deep should be provided close to the drain pan. The
tubing should not be higher than the bottom of the unit drain
pan at any point to assure proper drainage and allow chassis
removal. The drain line should pitch downward at least 1" per
10 ft. to an open building drain trap.
Drain Pan
3/4" O.D. Drain Connection
(Primary Drain)
3/4" I.D. Flexible Tubing Included
min.
Shaded Area Represents Components
Provided and Installed By Others
8
Highest Point Must Not Be Above
Bottom of Drain Pan
2"
Pitch Downward 1" per 10ft.
Secondary Drain Trap Install Instructions:
1. The trap and 2" piece of clear flexible 1/2" ID tubing are
shipped loose to prevent damage. They should be installed after
the Comfort Pack unit is installed and the return air connection
completed.
2. The trap must be primed (filled with water) for proper
operation of the secondary drain system. This may be done prior
to installation of the trap or after.
3. Insert trap into the grommet located in chassis base pan.
a. Apply force to section 1 (refer to drawing below)
b. Ensure at least .5" - 0.75" of tubing is inserted into the
grommet
c. PVC should be flush with drain pan connection
.
Secondary Drain Connection
Apply
Force
1/2" I.D. Tubing
4. Position the trap as shown and slide the 2" piece of clear
flexible tubing about 1" onto the top end of the trap. Slide the
top of the flexible tube on the trap onto the bottom of the 1/2"
OD secondary drain connection and push the top of the trap up.
The trap should be positioned so that there is only a small gap
between the top of the trap and the bottom of the secondary
drain connection.
5. To avoid damage whenever the slide-out chassis has to be
removed from the cabinet, remove the secondary drain trap
before sliding the chassis out. After the chassis is reinstalled in
the cabinet, prime the trap with water before reinstalling it.
Drain Pan
1
Grommet
Chassis Base
Trap