A. GENERAL
These coils are designed for use as cooling only or in
combination with a Heat Pump outdoor section.
B. APPLICATION INFORMATION
1. FURNACE AND COIL
Coil MUST BE installed downstream (discharge air)
of the furnace.
2. INDOOR UNIT AIRFLOW
Indoor unit must provide the required airow for
Cooling only or Heat Pump System Combination.
INSPECTION
Check carefully for any shipping damage. This must be
reported to and claims made against the transportation
com pany immediately. Check to be sure all major
components are in the unit. Any missing parts should
be reported to your supplier at once, and replaced with
authorized parts only.
Horizontal, Flat “Cased” Coils
Copper/Aluminum Coils: 4PXFH001BC3HHA, 4PXFH003BZ3HHA,
4PXFH004BC3HHA, 4PXFH005BZ3HHA, 4PXFH007BC3HHA,
4PXFH009BZ3HHA
Installer’s Guide
C. RECOMMENDATIONS
This coil is pressurized with 8-12 psig of dry air. Do
not stand directly in front of the coil connections
when removing sealing plugs. If no pressure is
released, check for leaks.
1. If this coil is a part of the total system installation, then
use the Installer’s Guide packaged with the furnaces,
Heat Pump outdoor sections, and Control Center for
physically installing those components.
2. It is recommended that the outline drawing
(page 2) be studied and dimensions properly noted
and checked against selected installation site. By
noting in advance proper clearance allowances for
installation and possible future service of the coil.
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack
upon completion of work.
①
18-AD40D1-1B-EN
!
This product can expose you to chemicals including lead,
which are known to the State of California to case cancer and
birth defects or other reproductive harm. For more information
go to www. P65Warnings.ca.gov
D. INSTALLING 4PXFH COIL /
ENCLOSURE
Coil/enclosure assembly can be used for all horizontal
furnaces (gas and electric) applications (Figure 1), and
for applications of vertical upow furnaces (Figure 2),
where the top clearance is insucient for installing an
“A” coil and enclosure, and there is access to a run of
horizontal duct.
SUPPLY DUCT
2 FEET MINIMUM
RECOMMENDED
FURNACE
FLUE STACK
TRANSITION DUCT
COIL/ENCLOSURE ASSY
WARNING (Medium/high pressure)
Contains Refrigerant!
System contains oil and refrigerant under high pressure.
Recover refrigerant to relieve pressure before opening
the system. See unit nameplate for refrigerant type. Do not
use non-approved refrigerants, refrigerant substitutes, or
refrigerant additives.
Failure to follow proper procedures or the use of non-
approved refrigerants, substitutes, or refrigerant additives
could result in death, serious injury, or equipment damage.
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