2 18-AD48D1-1A-EN
Installer’s Guide
Note: The manufacturer recommends installing ONLY A.H.R.I
approved, matched indoor and outdoor systems. Some of the
benets of installing approved matched indoor and outdoor
split systems are maximum eciency, optimum performance,
and the best overall system reliability.
Note: 5PXC upow coils may be installed in Upow,
Downow, Horizontal Right with kit, and Horizontal Left with
kit. 5PXC 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.
2. INDOOR UNIT AIRFLOW
Indoor unit must provide the required airow 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.
A. GENERAL:
These coils are designed for use in combination with a heat pump
or cooling outdoor section using R-454B REFRIGERANT.
The 5PXC equipment has been evaluated in accordance with
the Code of Federal Regulations, Chapter XX, Part 3280 or the
equivalent. Equipment is suitable for manufactured (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:
TABLE OF CONTENTS
General .................................................................................2
Application Information ......................................................2
Information on Servicing ....................................................2
Recommendation ................................................................5
Furnace in Upow Position ................................................5
Furnace in Downow Position ...........................................6
Maximum And Minimum Airow Settings ........................7
Pressure Drop Table ............................................................7
Installing / Brazing Refrigerant Lines ................................8
Pressure Test ......................................................................9
Vacuum Test ........................................................................9
Condensate Drain Piping ..................................................10
Cleaning the Coil ...............................................................10
Refrigerant Leak Detection System .................................11
Wiring .................................................................................12
Field Wiring Diagrams ......................................................13
Verication and Troubleshooting Refrigerant
Detection System ..............................................................16
Control Box Relocation (Optional) ...................................17
Outline Drawing .................................................................18
Troubleshooting Indoor TXV / Cooling Mode .................20
Checkout Procedures .......................................................21
COIL IS PRESSURIZED!
Coil is pressurized with approximately 8-12 psi dry air
and factory checked for leaks. Carefully release the
pressure by removing the rubber plug on the liquid line.
If no pressure is released, check for leaks.
Important: Installation of this unit shall be made in
accordance with the National Electric Code, NFPA No. 90A
and 90B, and any other local codes or utilities requirements.
Important: Cased coils do not require repositioning of the
refrigerant leak detection sensor for upow or downow
installations. Horizontal applications require sensor
repositioning. See conversion instructions section for details.
Note: This unit is a PARTIAL UNIT AIR CONDITIONER,
complying with PARTIAL UNIT requirements of Standard
UL 60335-2-40/CSA 22.2 NO. 60335-2-40, and must only
be connected to other units that have been conrmed as
complying to corresponding PARTIAL UNIT requirements of
this Standard.
Note: There is no declared maximum altitude for operating the
appliance.
Note: Charging of the refrigerating system shall be according to
the instructions provided by the manufacturer of the outdoor unit.
Note: Unit not to be used with oil drum type furnaces.
Note: Both the drain pans and the refrigerant detection sensor
installed on this unit are designed to be heat resistant to
temperatures produced by all residential Trane and American
Standard furnaces.
SHARP EDGE HAZARD!
Failure to follow this caution could result in property damage
or personal injury. Be careful of sharp edges on equipment or
any cuts made on sheet metal while installing or servicing.
C. INFORMATION ON SERVICING:
All replacement parts shall be in accordance with the
manufacturer's specications.
Prior to Beginning Work
Prior to beginning work on systems containing ammable
refrigerants, safety checks are necessary to ensure that the
risk of ignition is minimized. For repair to the refrigerating
system, the following shall be completed prior to conducting
work on the system:
Figure 1