Rheem RHPD Series, Installation Instructions Manual

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II. INTRODUCTION
This booklet contains the installation and operating instructions
for your package heat pump. There are a few precautions
that should be taken to derive maximum satisfaction from it.
Improper installation can result in unsatisfactory operation or
dangerous conditions.
Read this booklet and any instructions packaged with separate
equipment required to make up the system prior to installation.
Give this booklet to the owner and explain its provisions. The
owner should retain this booklet for future reference.
III. CHECKING PRODUCT RECEIVED
Upon receiving the unit, inspect it for any damage from ship-
ment. Claims for damage, either shipping or concealed, should
be filed immediately with the shipping company. Check the
unit model number, heating size, electrical characteristics, and
accessories to determine if they are correct.
IV. EQUIPMENT PROTECTION FROM THE
ENVIRONMENT
The metal parts of this unit may be subject to rust or deteri-
oration in adverse environmental conditions. This oxidation
could shorten the equipment’s useful life. Salt spray, fog or
mist in seacoast areas, sulphur or chlorine from lawn watering
systems, and various chemical contaminants from industries
such as paper mills and petroleum refineries are especially
corrosive.
If the unit is to be installed in an area where contaminants
are likely to be a problem, special attention should be
given to the equipment location and exposure.
1. Avoid having lawn sprinkler heads spray direction on the
unit cabinet.
2. In coastal areas, locate the unit on the side of the building
away from the waterfront.
3. Shielding provided by a fence or shrubs may give some
protection.
Regular maintenance will reduce the buildup of contami-
nants and help to protect the unit’s finish.
1. Frequent washing of the cabinet, fan blade and coil with
fresh water will remove most of the salt or other contami-
nants that build up on the unit.
2. Regular cleaning and waxing of the cabinet with a good
automobile polish will provide some protection.
3. A good liquid cleaner may be used several times a year to
remove matter that will not wash off with water.
Several different types of protective coatings are offered in
some areas. These coatings may provide some benefit, but the
effectiveness of such coating materials cannot be verified by
the equipment manufacturer.
The best protection is frequent cleaning, maintenance and
minimal exposure to contaminants.
V. SPECIFICATIONS
A. GENERAL
The Packaged Heat Pump is available without auxiliary heat
or with 15, 20, 30 or 40 kW electric heat. Cooling and heating
capacities of 7 1 ⁄
2
, and 10 nominal tons are available. Units are
convertible from horizontal supply and return to bottom supply
and return by relocation of supply and return air access panels.
See cover installation detail.
The units are weatherized for mounting outside of the building.
The information on the rating plate is in compliance with the
FTC and DOE rating for single phase units. The following infor-
mation is for three phase units which are not covered under
the DOE certification program.
1. The efficiency rating of this unit is a product thermal effi
-
ciency rating determined under continuous operating con-
ditions independent of any installed system.
B. MAJOR COMPONENTS
The unit includes a hermetically-sealed refrigerating system
(consisting of a compressor, condenser coil, evaporator coil
biflow thermal expansion valve, reversing valve), a circulation
air blower, a condenser fan, and all necessary internal electri-
cal wiring. The cooling system of these units is factory-evac-
uated, charged and performance tested. Refrigerant amount
and type are indicated on rating plate.
C. R-410A REFRIGERANT
All units are factory charged with R-410A refrigerant.
1. Specification of R-410A:
Application: R-410A is not a drop-in replacement for R-22;
equipment designs must accommodate its higher pressures. It
cannot be retrofitted into R-22 units.
Pressure: The pressure of R-410A is approximately 60%
(1.6 times) greater than R-22. Recovery and recycle equip-
ment, pumps, hoses and the like need to have design pressure
ratings appropriate for R-410A. Manifold sets need to range
up to 800 psig high-side and 250 psig low-side with a 550 psig
low-side retard. Hoses need to have a service pressure rating
of 800 psig. Recovery cylinders need to have a 400 psig ser-
vice pressure rating. DOT 4BA400 or DOT BW400.
Combustibility: At pressures above 1 atmosphere, mixture
of R-410A and air can become combustible. R-410A and
air should never be mixed in tanks or supply lines, or be
allowed to accumulate in storage tanks. Leak checking
should never be done with a mixture of R-410A and air.
Leak checking can be performed safely with nitrogen or a mix-
ture of R-410A and nitrogen.
2. Quick Reference Guide For R-410A
• R-410A refrigerant operates at approximately 60% higher
pressure (1.6 times) than R-22. Ensure that servicing equip -
ment is designed to operate with R-410A.
• R-410A refrigerant cylinders are pink.
• R-410A, as with other HFC’s is only compatible with
POE oils.
• Vacuum pumps will not remove moisture from POE oil.
• R-410A systems are to be charged with liquid refrigerants.
WARNING
!
!
DISCONNECT ALL POWER TO THE UNIT BEFORE
STARTING MAINTENANCE. FAILURE TO DO SO CAN
RESULT IN SEVERE ELECTRICAL SHOCK OR DEATH.
WARNING
THE MANUFACTURER’S WARRANTY DOES NOT
COVER ANY DAMAGE OR DEFECT TO THE HEAT PUMP
CAUSED BY THE ATTACHMENT OR USE OF ANY COM-
PONENTS, ACCESSORIES OR DEVICES (OTHER THAN
THOSE AUTHORIZED BY THE MANUFACTURER) INTO,
ONTO OR IN CONJUNCTION WITH THE HEAT PUMP.
YOU SHOULD BE AWARE THAT THE USE OF UNAU-
THORIZED COMPONENTS, ACCESSORIES OR DEVIC-
ES MAY ADVERSELY AFFECT THE OPERATION OF
THE HEAT PUMP AND MAY ALSO ENDANGER LIFE
AND PROPERTY. THE MANUFACTURER DISCLAIMS
ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY
RESULTING FROM THE USE OF SUCH UNAUTHORIZED
COMPONENTS, ACCESSORIES OR DEVICES.