Installer’s Guide
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.
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.
2. INDOOR UNIT AIRFLOW
Indoor unit must provide the required airflow for the heat
pump or cooling combinations approved for these coils.
IMPORTANT: Review your installation requirements. Check
the table on the outline drawings and note all dimensions
for your coil before beginning the installation.
Table of Contents
General .................................................................................1
Application Information ......................................................1
Recommendation ................................................................2
Furnace in Upow Position ................................................2
Furnace in Downow Position ...........................................2
Maximum Airow Setting, CFM ..........................................3
Installing / Brazing Refrigerant Lines ................................3
Leak Check...........................................................................4
Condensate Drain Piping ....................................................4
Cleaning the Coil .................................................................4
Outline Drawings .................................................................5
Troubleshooting Indoor TXV / Cooling Mode ...................7
Figure 1
18-AD41D1-1B-EN
Cased Aluminum Coils
"Dedicated Upow / Downow"
Convertible to horizontal with separately purchased kit
Upow models:
4PXCAU24BS3HAB
4PXCAU32BS3HAB
4PXCBU24BS3HAB
4PXCBU30BS3HAB
4PXCCU30BS3HAB
4PXCBU36BS3HAB
4PXCCU36BS3HAB
4PXCBU42BS3HAB
4PXCCU42BS3HAB
4PXCBU48BS3HAB
4PXCCU48BS3HAB
4PXCDU48BS3HAB
4PXCCU60BS3HAB
4PXCDU60BS3HAB
Downow models:
4PXCBD30BS3HDB
4PXCBD36BS3HDB
4PXCCD36BS3HDB
4PXCBD42BS3HDB
4PXCCD42BS3HDB
4PXCCD60BS3HDB
4PXCDD60BS3HDB
NOTE:
OPTIONAL DOWNFLOW GASKET INSTALLATION: For
unusually humid applications that expect prolonged
operation above 70% RH, it is recommended to use the
BAYGSKT001A0 gasket kit to prevent water from forming
on the bottom of the drain pan and dripping into the
supply ductwork.
NOTE: 4PXC upow coils may be installed in Upow, Down-
ow, Horizontal Right with kit, and Horizontal Left with kit.
4PXC downow coils may be installed in Downow and
Horizontal Right with kit.
1. FURNACE AND COIL
The coil MUST BE installed downstream (in the outlet air)
of the furnace.
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
A. GENERAL
These coils are designed for use in combination with a heat pump
or cooling outdoor section using R-410A REFRIGERANT.
The 4PXC equipment has been evaluated in accordance with
the Code of Federal Regulations, Chapter XX, Part 3280 or the
equivalent. “Suitable for Mobile Home use” The height of the
Furnace, Coil and discharge duct work must be 7 ft. or less.
Inspect the coil for shipping damage. Notify the transportation
company immediately if the coil is damaged.
B. APPLICATION INFORMATION
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