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MODEL
SIZE (TON)
CAPVP1917ALA
CAPVP2517ALA
CAPVP3717ALA
CAPVP3721ALA
CAPVP4321ALA
CAPVP6124ALA
INTRODUCTION
Use this instruction manual to install CAPVP indoor coil on
multipoise furnaces. (See Fig. 1.) The CAPVP coil is enclosed in a
casing.
Supply
Evaporator
Coil
Upflow
Furnace
Installation
Return
Fig. 1 - - Typical Installation Upflow/Downflow Cased Coils
Wide Coil
Field Fabricated
Adapter(s)
Narrow Furnace
* CAUTION: DO NOT MOUNT COIL LOWER THAN
3˝ (76mm) MINIMUM OR FURNACE FAILURE MAY RESULT
Fig. 2 - - Adapter(s) Installation When Coil Overhangs or Un-
derhangs Furnace
INSTALLATION
Inspect Equipment
File claim with shipper if equipment is damaged or incomplete.
Select Installation
Upflow CAPVP Coil Installation.
The cased coil is designed to fit furnaces of the same width.
1. Set coil in place on upflow furnace discharge air opening.
2. Ensure coil is level for proper condensate drainage. Do not
tip coil toward condensate drain. Coil casing need not be
fastened or screwed to furnace.
Table 1 – CAPVP Cased Coil Information
FLUSH FIT TO
FURNACE WIDTH
1.5
17--- 1/2" / 445 mm
2.0
17--- 1/2" / 445 mm
3.0
17--- 1/2" / 445 mm
3.0
21" / 533 mm
3.5
21" / 533 mm
5.0
24--- 1/2" / 622 mm
Return
Downflow
Furnace
Installation
Supply
A13060
Narrow Coil
3˝ (76mm)
Wide Furnace
A13061
COIL CONNECTION TUBE SIZE (IN.)
Liquid
3/8
3/8
3/8
3/8
3/8
3/8
3. When installing wider coil on narrow furnace, create field
fabricated adapter. (See Fig. 2.)
4. When installing narrow coil on wide furnace, create field
fabricated adapter. (See Fig. 2.)
NOTE: On upflow installations where the indoor coil is placed in
an unconditioned space, a 6" (152 mm) wide piece of insulation
should be applied and wrapped around the outside of coil casing
and supply duct contact point.
See Table 1 for dimensions. Note instructions for placement of coil
casing on furnace.
Downflow CAPVP Coil Installation.
IMPORTANT: Installing "A" coils rotated 90_ from the front of
the furnace in downflow applications can cause water blow off or
coil freeze up. This is due to the concentration of air on one coil
slab or lack of air on the opposite coil slab. If the airflow is high
due to ductwork or other causes, and there is a chance for water
blow off, it is recommended that a 3" (76 mm) field- -supplied
adapter be placed between the coil and the furnace to allow the air
to distribute evenly to both coil slabs. (See Fig. 3.)
3" (76mm)
Fig. 3 - - Downflow Installation With Coil Rotated 90_
1. Set cased coil on supply duct opening.
2. Place field fabricated 3" (76 mm) adapter on coil casing.
Adapter should be tapered to fit coil/furnace combination
when one of them is larger than the other.
3. Set furnace on adapter.
NOTE:
In downflow installation with a 4- -way multipoise
furnace, break off perforated duct flanges on furnace. See furnace
installation instructions.
CONNECT REFRIGERANT PIPING
Use accessory tubing package or field- -supplied tubing of
refrigerant grade, see Product Data information for ordering.
Suction tube must be insulated. Do not use damaged, dirty, or
contaminated tubing because it may plug refrigerant flow- -control
device. ALWAYS evacuate the coil and field- -supplied tubing
before opening outdoor unit service valves.
2
Suction
3/4
3/4
3/4
7/8
7/8
7/8
A13062
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