Rheem Professional Prestige Series Hybrid Heat Pump User Manual
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Use & Care Manual
With Installation Instructions for the Installer
Electric Residential Heat Pump
Water Heaters
Residential 50 Gallon - HB Series
The purpose of this manual is twofold:
one, to provide the installer with the basic
directions and recommendations for the
proper installation and adjustment of the
water heater; and two, for the owner–
operator, to explain the features, operation,
safety precautions, maintenance and
troubleshooting of the water heater. This
manual also includes a parts list.
It is imperative that all persons who are
expected to install, operate or adjust this
water heater read the instructions carefully
so they may understand how to perform
these operations. If you do not understand
these instructions or any terms within it,
seek professional advice.
Any questions regarding the operation,
maintenance, service or warranty of this
water heater should be directed to the
seller from whom it was purchased. If
additional information is required, refer to
the section on “If you need service.”
DO NOT destroy this manual. Please
read carefully and keep in a safe place
for future reference.
Recognize this symbol as an
indication of Important Safety
!
Information!
California Proposition 65
Warning: This product contains
chemicals known to the State of
California to cause cancer, birth
defects or other reproductive harm.
Printed in USA
© 2013 Rheem Manufacturing Co.
92-103234-12
AP16244-1 (06/13)
Safety Information
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Safety Precautions ....... 3-4
Installation Instructions
Location ................. 5
Water Connections ........ 6
Condensate Drain ......... 6
Relief Valve .............. 7
Electrical Connections. . . . 8-9
Pipe Insulation ........... 10
Installation Checklist .......11
Operating Instructions
Safety Controls .......... 12
Water Temperature ........12
Basic Water Heater Operation .
. . . . . . . . . . . . . . . . . . . . . .13-14
FOR YOUR RECORDS
Write the model and serial numbers here:
#
#
You can find them on a label on the appliance.
Staple sales slip or cancelled check here.
Proof of the original purchase date is needed to obtain service
under the warranty.
READ THIS MANUAL
Inside you will find many helpful hints on how to use and
maintain your water heater properly. Just a little preventive
care on your part can save you a great deal of time and money
over the life of your water heater.
You’ll find many answers to common problems in the Before
You Call For Service section. If you review our chart of
Troubleshooting Tips first, you may not need to call for service
at all.
Care and Cleaning
Draining ................ 15
Maintenance ............. 15
Extended Shut-Down ..... 16
Troubleshooting Tips
Before You Call
For Service .............. 17
Customer Service
Parts List ................ 20
Wiring Diagram .......... 22
If You Need
Service ................ 24
READ THE SAFETY INFORMATION
Your safety and the safety of others are very important.
There are many important safety messages in this manual
and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol. Recognize this
symbol as an indication of Important Safety
Information!
!
This symbol alerts you to potential hazards that
can kill or hurt you and others.
All safety messages will follow the safety alert symbol and
either the word “DANGER”, “WARNING”, “CAUTION”
or “NOTICE”.
These words mean:
DANGER
WARNING
!
CAUTION
NOTICE:
An imminently hazardous situation
that will result in death or serious
injury.
A potentially hazardous situation that
could result in death or serious
injury and/or damage to property.
A potentially hazardous situation that
may result in minor or moderate
injury.
Attention is called to observe a
specified procedure or maintain a
specific condition.
2
!
IMPORTANT SAFETY INFORMATION.
!
READ ALL INSTRUCTIONS BEFORE USING.
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of water heater. Water temperatures above 125°F can cause severe
burns or death from scalding. Be sure to read and follow the warnings outlined on the
label pictured below. This label is also located on the water heater near the thermistor
access panel.
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
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DANGER
HOT
BURN
Water temperature over 125° F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
120°F (49°C) More than 5 minutes
125°F (52°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (65°C) About 1½ seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide in
determining the proper water temperature for your
home.
DANGER: Households with small children,
disabled, or elderly persons may require a 120°F or
lower thermostat setting to prevent contact with
“HOT” water.
The temperature of the water in the heater is regulated
by the water heater interface control. To comply with
safety regulations the temperature was set at 120°F
before the water heater was shipped from the factory.
The illustration below shows the water temperature
setting.
Refer to the Operating Instructions in this manual
for detailed instructions in how to adjust the water
temperature.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
NOTICE: Mixing valves are available for reducing point
of use water temperature by mixing hot and cold water
in branch water lines. Contact a licensed plumber or the
local plumbing authority for further information.
DANGER: Hotter water increases the potential for
Hot Water SCALDS.
3
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
WARNING!
For your safety, the information in this manual must be followed to minimize the risk of
fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of
life.
Be sure to read and understand the entire Use and Care Manual before attempting
to install or operate this water heater. It may save you time and cost. Pay particular
attention to the Safety Instructions. Failure to follow these warnings could result in
serious bodily injury or death. Should you have problems understanding the instructions
in this manual, or have any questions, STOP, and get help from a qualified service
technician, or the local electric utility.
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California Law requires that residential water heaters must be braced, anchored or
strapped to resist falling or horizontal displacement due to earthquake motions. For
residential water heaters up to 52-gallon capacity, a brochure with generic earthquake
bracing instructions can be obtained from: Office of the State Architect, 1102 Q Street,
Suite 5100, Sacramento, CA 95814 or you may call 916-445-8100 or ask a water heater
dealer.
However, applicable local codes shall govern installation. For residential water heaters of
a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable
bracing procedures.
CAUTION: DO NOT “crush” or otherwise impair the removal of the “plastic” front
(side) panel.
SAFETY PRECAUTIONS
Have the installer show you the location of the circuit breaker and how to shut it off if
necessary. Turn off the circuit breaker if the water heater has been subjected to overheating,
fire, flood, physical damage or if the ECO (temperature limiting control) fails to shut off.
● Read this manual entirely before installing
or operating the water heater.
● Use this appliance only for its intended
purpose as described in this Use and Care
Manual.
● Be sure your appliance is properly installed
in accordance with local codes and the
provided installation instructions.
WARNING!
Disconnect all power to unit before starting maintenance. Failure to do so can cause
electrical shock resulting in severe personal injury or death.
● DO NOT attempt to repair or replace
any part of your water heater unless it is
specifically recommended in this manual.
All other servicing should be referred to a
qualified technician.
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
4
Installing the water heater
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The location chosen for the water heater must take into consideration the following:
Local Installation Regulations
NOTICE: Auxiliary
catch pan MUST
conform to local
codes.
Catch Pan Kits
are available from
the store where
the water heater
was purchased, or
any water heater
distributor.
Catch Pan should not
obstruct cold inlet or
drain valve.
This water heater must be installed
in accordance with these instructions,
local codes, utility codes, utility
company requirements or, in the
absence of local codes, the latest
edition of the National Electrical
Code. It is available from some local
libraries or can be purchased from the
National Fire Protection Association,
Location
Locate the water heater in a clean dry
area as near as practical to the area of
greatest heated water demand. Long
un-insulated hot water lines can waste
energy and water.
Place the water heater in such a
manner that the thermistor and element
access panels can be removed to
permit inspection and servicing such
as removal of elements or checking
controls.
The water heater and water lines
should be protected from freezing
temperatures. Do not install the water
heater in outdoor, unprotected areas.
Make certain the floor underneath
the water heater is strong enough to
sufficiently support the weight of the
water heater once it is filled with water.
CAUTION: The water heater
should not be located in an area
where leakage of the tank or
connections will result in damage
to the area adjacent to it or to
lower floors of the structure. Where
B
A— Diameter of water
heater plus 2" min..
B— Maximum 2″
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating
plate of the water heater to be certain the power supply corresponds to the water
heater requirements. Rating plate is located on front of water heater.
Batterymarch Park, Quincy, MA 02269
as booklet ANSI/NFPA 70.
Canadian installations should refer to
CSA22.1, a copy can be purchased
from the Canadian Standards
Association, 5050 Spectrum Way,
Mississauga,ONT L4W 5N6
such areas cannot be avoided, it is
recommended that a suitable catch
pan, adequately drained, be installed
under the water heater.
NOTICE: Installation in a closet or
confined space is not allowed.
It is recommended that the Heat Pump
Water Heater be installed in a location
providing approximately 1,000 cu. ft
of unconditioned air. Installation in
an enclosed room smaller than 1000
cubic feet (10'x10'x10') is permissible
provide that adequate inlet/outlet
ventilation is provided, such as
louvered door, to allow heat to enter
the room. If louvered door is used,
it is recommended that it provide
a minimum of two 8"x14" register
openings, one at the top and the other
at the bottom of the door, and that these
be kept fully opened.
Clearances
Rear Top
2" 8" Min.
A
To open drain, line
should be at least 3/4″ ID
and pitched for proper
drainage.
Refrigerant
This heat pump water heater is factory charged with an environmentally friendly,
non-chlorinated refrigerant, R410A. This refrigerant has zero ozone depletion
potential.
5
Installing the water heater
Thermal Expansion
Determine if a check valve exists in the
inlet water line. Check with your local
water utility. It may have been installed in
the cold water line as a separate back flow
preventer, or it may be part of a pressure
reducing valve, water meter or water
softener. A check valve located in the cold
water inlet line can cause what is referred
to as a “closed water system”. A cold
water inlet line with no check valve or back
flow prevention device is referred to as an
“open” water system.
As water is heated, it expands in volume
and creates an increase in the pressure
within the water system. This action is
referred to as “thermal expansion”. In
an “open” water system, expanding water
which exceeds the capacity of the water
heater flows back into the city main where
the pressure is easily dissipated.
A “closed water system”, however,
prevents the expanding water from
flowing back into the main supply line,
and the result of “thermal expansion”
can create a rapid and dangerous pressure
increase in the water heater and system
piping. This rapid pressure increase can
quickly reach the safety setting of the
relief valve, causing it to operate during
each heating cycle. Thermal expansion,
and the resulting rapid and repeated
expansion and contraction of components
in the water heater and piping system can
cause premature failure of the relief valve,
and possibly the heater itself. Replacing
the relief valve WILL NOT correct the
problem!
The suggested method of controlling
thermal expansion is to install an expansion
tank in the cold water line between the
water heater and the check valve (refer
to the illustration on the next page). The
expansion tank is designed with an air
cushion built in that compresses as the
system pressure increases, thereby relieving
the over pressure condition and eliminating
the repeated operation of the relief valve.
Other methods of controlling thermal
expansion are also available. Contact
your installing contractor, water supplier
or plumbing inspector for additional
information regarding this subject.
Water Supply Connections
Refer to the illustration on the next
page for suggested typical installation. The
installation of unions or flexible copper
connectors is recommended on the hot
and cold water connections so that the
water heater may be easily disconnected
for servicing if necessary. The HOT and
COLD water connections are clearly
marked and are 3/4″ NPT on all models.
Install a shut-off valve in the cold water
line near the water heater.
See page 8 on "To Fill The Water
Heater".
NOTICE: DO NOT apply heat to the
HOT or COLD water connections.
If sweat connections are used, sweat
tubing to adapter before fitting adapter
to the water connections on heater. Any
heat applied to the water supply fittings
will permanently damage the dip tube
and/or heat traps.
Condensate Drains for the Heat Pump
Consult local codes or ordinances for
specific requirements. Refer to page 7.
IMPORTANT: When making drain fitting
connections to the drain tubing, use a thin
layer of piping tape or silicone and install
hand tight.
IMPORTANT: When making drain fitting
connections to the drain tubing, DO NOT
overtighten. Overtightening fittings can
split pipe connections on the drain pan.
• This unit is equipped with a 3/4"
primary condensate connection and a
1/2" overflow connection.
• DO NOT reduce drain line size less
6
than connection size provided on
condensate drain.
• All drain lines must be pitched
downward away from the unit a
minimum of 1/8" per foot of line to
ensure proper drainage.
• Do not connect condensate drain line
to a closed or open sewer pipe. DO
NOT allow condensate to drain into
the water heater drain pan.
• The drain line should be insulated
where necessary to prevent sweating
and damage due to condensate
forming on the outside surface of the
line.
!
Typical Installation
Heatpumplter
Primary condensation (3/4")
to open drain or outdoors
Secondary condensate tubing
(1/2") to open drain or outdoors
Hot water outlet
toxtures
Temperature and pressure
relief valve and discharge
line
Union
Ceiling
8" Minimum clearance above heat
pump to allow air circulation
Electrical access cover
Heat trap
Shut off valve
6" Min
Union
Cold water
supply
Thermal expansion
6" Air gap
Drain valve
tank (if required)
A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves
and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is installed
in the opening provided. No valve of any type should be installed between the relief valve and the tank.
Local codes shall govern the installation of relief valves.
Relief Valve
WARNING: The
pressure rating of
the relief valve
must not exceed
150 PSI, the
maximum working
pressure of the
water heater as
marked on the
rating plate.
The BTUH rating of the relief valve
must not be less than the input rating
of the water heater as indicated on the
rating label located on the front of the
heater (1 watt=3.412 BTUH).
Connect the outlet of the relief valve
to a suitable open drain so that the
discharge water cannot contact live
electrical parts or persons and to
eliminate potential water damage.
Piping used should be of a type
approved for hot water distribution.
The discharge line must be no smaller
than the outlet of the valve and must
pitch downward from the valve to allow
complete drainage (by gravity) of the
relief valve and discharge line. The
end of the discharge line should not be
threaded or concealed and should be
protected from freezing. No valve of
any type, restriction or reducer coupling
should be installed in the discharge line.
7
Installing the water heater
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SCALE 0.400
WARNING: The tank must
be full of water before heater
is turned on. The water heater
warranty does not cover
damage or failure resulting
from operation with an empty
or partially empty tank.
To Fill the Water Heater
Make certain the drain valve is
completely closed.
Open the shut-off valve in the cold
water supply line.
Open each hot water faucet slowly to
allow the air to vent from the water
heater and piping.
A steady flow of water from the hot
water faucet(s) indicates a full water
heater.
EcoNet™ Communication Port
EcoNet™ communication port is for future integration with home automation,
energy management, and demand response systems
EcoNet™ Port
Electrical Connections
WARNING!
Turn off electric power at the fuse box or
service panel before making any electrical
connections.
Also, the ground connection must be
completed before making line voltage
connections. Failure to do so can result in
electrical shock, severe personal injury or
death.
Ground Screw
Electrical Power
Hookup Terminals
Disconnect all power to unit before starting
maintenance. Failure to do so can cause
electrical shock resulting in severe personal
injury or death
The unit must be grounded. Failure to do so
can cause electrical shock resulting in severe
personal injury or death.
8
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