Installation Instructions; Inspect Shipment; Flush Refrigerant Lines; System Installation - Whirlpool WHP44 Installation Instructions Manual

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NOTE: All outdoor wiring must be suitable for outdoor use. Use
copper conductors only.
All field wiring must be done in accordance with National
Electrical Code requirements, applicable requirements of UL,
or local codes, where applicable.

Inspect Shipment

This heat pump is shipped in one package, completely
assembled and wired. The thermostat is shipped in a separate
carton when ordered.
Check the heat pump rating plate to confirm specifications
are as ordered.
Upon receipt of equipment, inspect it for possible shipping
damage. Examine the heat pump inside the carton if the
carton is damaged.
If damage is found, it should be noted on the carrier's freight
bill. Damage claims should be filed with the carrier
immediately. Claims of shortages should be filed with the
seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the heat pump, because your claim may be denied.

Flush Refrigerant Lines

Refrigerant lines must be flushed by a licensed, EPA certified
refrigerant technician in accordance with established procedures.
R-410A outdoor systems are not recommended for use with
indoor systems that have used R-22 as the refrigerant.
However, if this condensing unit is being matched with an
approved line set which was previously charged with R-22
refrigerant, the line set must be flushed prior to installation.
See your local distributor for an appropriate flushing kit.
Check the refrigerant lines for size and length. See "Connect
Refrigerant Lines."
Polyol ester (POE) oils are used in Whirlpool units charged
with R-410A refrigerant. Residual mineral oil from the R-22
system can act as an insulator, inhibiting proper heat transfer.
It can also clog the thermal expansion device, reducing
system performance and capacity.
Where possible, drain as much residual compressor oil from
the existing systems, lines, and traps. Pay close attention to
low areas where oil may collect.


Electrical wiring, disconnect means and over-current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over-current protection,
minimum circuit ampacity, and operating voltage. See the
wiring diagrams in "Make Electrical Connections."

System Installation

Mounting Evaporator Coil Above Condensing Unit
When mounting the evaporator coil above the condensing unit,
an inverted loop in the suction line adjacent or near the
connection to the evaporator coil is required. The top of the loop
must be slightly higher than the top of the evaporator coil.
A. Condensing unit
B. Suction line
Mounting Condensing Unit Below Evaporator Coil
When mounting the condensing unit above the evaporator coil,
oil traps are required at equal intervals along the suction line.
Install 1 oil trap for a height difference of 15 ft to 25 ft (4.6 m
to 7.6 m) between indoor and outdoor units.
Install 2 oil traps for a height difference of 26 ft to 50 ft (7.9 m
to 15.2 m) between indoor and outdoor units.
Install 3 oil traps for a height difference of 51 ft to 100 ft
(15.5 m to 30.5 m) between indoor and outdoor units.
C. Evaporator coil
D. Liquid line


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