Rheem PROPH80T2RH350DCB User Manual

!

Use & Care Manual

With Installation Instructions for the Installer

Electric Residential Hybrid

Water Heaters

Residential - HB Duct Ready 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.

© 2016 Rheem Sales Company Inc.

AP18095-2 (1/18)

Safety Information

!

!

Safety Precautions ....... 3-4

Installation Instructions

Location ................. 5

Installing the Water Heater .. 6

Water Connections ........ 7

Condensate Drain ......... 7

Relief Valve .............. 8

Electrical Connections. . . . . . 9

Pipe Insulation ........... 11

Ducting Requirements. . . . . 12

Installation Checklist .......14

Operating Instructions

Safety Controls .......... 16

Water Temperature ........16

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.

Basic Water Heater Operation .

. . . . . . . . . . . . . . . . . . . . . .17-24

Care and Cleaning

Draining ................ 25

Maintenance ............. 25

Extended Shut-Down ..... 26

Troubleshooting Tips

Before You Call

For Service .............. 27

Troubleshooting alarm code

. . . . . . . . . . . . . . . . . . . . . 28-30

Customer Service

Replacement Parts ........ 31

Cavity Insert ............. 32

Wiring Diagram .......... 33

If You Need

Service ................ 36

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

!

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

Energy Saver Mode

setting temperature at water
heater.

Feel water before bathing or

120°

showering.
Temperature limiting valves are

warm hot very hot

available, see manual.

NOTICE: Mixing valves are recommended for reducing
point of use water temperature by mixing hot and
cold water in branch water lines. It is recommended
that a mixing valve complying with the Standard for
Temperature Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be installed. See page
16 for more details and contact a licensed plumber or the
local plumbing authority for further information.

StatusSettings

DANGER: Hotter water increases the potential for
Hot Water SCALDS.

Service Mode

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 916-445­8100 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.

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.

● 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.

● DO NOT attempt to repair or replace the

compressor, refrigerant, or any part associated
with the sealed refrigerant system.

● DO NOT turn on the electrical supply

or operate this water heater unless it is
completely full of water.

WARNING!

Disconnect all power to unit before starting maintenance. Failure to do so can cause electrical shock
resulting in severe personal injury or death.

WARNING!

FLAMMABLE CONTENTS UNDER PRESSURE. The compressor is not a serviceable part.
The compressor wiring terminals may arc allowing pressurized refrigerant and oil to escape,
ignite and cause serious bodily injury, severe burns or death.

READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.

SAVE THESE INSTRUCTIONS

Refrigerant

This Hybrid Water Heater is factory charged with an environmentally friendly, non-chlorinated
refrigerant, R134A. This refrigerant has zero ozone depletion potential.

4

Installing the water heater

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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.

The location chosen for the water heater must take into consideration the following:

Local Installation Regulations

NOTICE: Auxiliary
drain pan MUST
conform to local
codes.

Drain Pan Kits
are available from
the store where
the water heater
was purchased, or
any water heater
distributor.

Drain 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.

For installation on floors other than
concrete, the floor isolation kit is
recommended to minimize vibrations.

B

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

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
such areas cannot be avoided, it is
recommended that a suitable drain
pan, adequately drained, be installed
under the water heater.

NOTICE: Installation in a confined
space will lead to higher power
consumption if adequate ventilation
is not provided.

It is recommended that the hybrid
water heater be installed where ambient

temperatures DO NOT exceed 145°F
(63°C).

Insufficient air exchange will result in
increased energy consumption levels.

Clearances

Rear Sides Top

0" 0" 6"

A

A— Diameter of water

heater plus 2" min..

B— Maximum 2″

To open drain, line
should be at least 3/4″ ID
and pitched for proper
drainage.

5

Room size: Larger than 700 ft3 (e.g. 7' x 10' x 10').
Requirements: No additional ventilation needed.

Heater: Not Ducted

24”

12” Max

Air exhaust

Door

Room size: Smaller than 700 ft3 (e.g. 7' x 10' x 10').
Requirements: Full louvered door OR two louvers
top and bottom. See below.

Heater: Not Ducted

24”

.75”

Room: Small Closet
Requirements: * Air gap under door equal to 18 in

2

(0.75” clearance).
* Louver must be located the same height on door as
the air exhaust on heater.
* Heater air exhaust must be positioned towards louver
within one foot of door.

Heater: Not ducted

Installing the water heater

Locations that provide optimal efficiency

Heater: Not Ducted

Room size: Larger than 700 ft3 (e.g. 7' x 10' x 10').
Requirements: No additional ventilation needed.

NOTICE: If air
temperature in
installed location
drops more than
15°F (8°C) during
heating, air circulation
is insufficient for
efficient operation.
Utilize ducting to
direct cold exhaust air
to another location.

Heater: Not Ducted

Room size: Smaller than 700 ft3 (e.g. 7' x 10' x 10').
Requirements: Full louvered door OR two louvers
top and bottom. See below.

Heater: Not ducted

Room: Small Closet
Requirements: * Air gap under door equal to 18 in
* Louver must be located the same height on door as
the air exhaust on heater.
* Heater air exhaust must be positioned towards louver
within one foot of door.

2

(0.75” clearance).

Air exhaust

.75”

Heater: Ducted with inlet OR outlet duct

Room size: Any size room
Requirements: Air gap under door equal to 18 in
(0.75” clearance)

.75”

24”

2

12” Max

Door

Heater: Ducted with inlet AND outlet duct

Room size: Any size room
Requirements: No additional ventilation needed.

6

NOTICE: The inlet and
outlet water nipple remain
with the black markings
pointed up.

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.

NOTICE: Condensate
from this unit is not Acidic
and is not required to be
neutralized.

Water Supply Connections

Refer to the illustration on the next page
for suggested typical installation. The
installation of flexible connectors is
recommended on the hot and cold water
connections. Flexible connections provide
vibration isolation and allow the water heater
to be easily disconnected for servicing if
necessary. The HOT and COLD water
connections are clearly marked and are
3/4in. NPT on all models. Install a shut-off

valve in the cold water line near the water
heater.

Condensate Drains

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" NPT
female primary condensate connection.
Use MIP fittings for connections.

• DO NOT reduce drain line size less
than connection size provided on
condensate drain.

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.

• All drain lines must be pitched
downward away from the unit a
minimum of 1/8" per foot of line to
ensure proper drainage.

• Drain lines must include a P-trap if
connected to a sewer pipe.

• If no drain is available, then a common
condensate pump with a capacity no
less than 2 gallon per day must be
installed.

• 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.

7

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!

Vacuum Relief Valve

If required, install per local codes

instructions.

Installing the water heater

Typical Installation

Ceiling

(Not Supplied)

and valve manufacturer’s

Temperature
and pressure
relief valve and
discharge line

Primary
condensation
(3/4") to open
drain or
outdoors

Air lter

6" Minimum clearance above heat

pump to allow for lter maintenance

Piping Tee to be installed in condensate
plumbing to provide access opening for
yearly inspection and cleaning.

Flexible Connection
recommended
(Such as PEX)

Hot water outlet

to xtures

Flexible Connection
recommended
(Such as PEX)

Heat trap
6" Min

Shut-off
valve

Cold water
supply

8

6" Air gap

A new combination temperature and pressure relief valve, complying with the Standard for Relief
Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed and must remain
in the opening provided and marked for the purpose on the water heater. No valve of any type
should be installed between the relief valve and the tank.

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.

WARNING: DO NOT connect other plumbing to the T&P plumbing; it must go directly to a suitable open drain.
DO NOT connect the T&P plumbing to the condensate plumbing.

Relief Valve

The btu/h 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 btu/h).

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.

Drain
valve

Thermal expansion
tank (if required)

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
graTvity) 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.

!

!

WARNING: DO NOT
turn on the electrical
supply or operate this
water heater unless it is
completely full of water.
The tank must be full of
water before water 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 on the
water heater 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

EcoNet™ communication is provided for integration with home automation,
energy management, and demand response systems. Connectivity is provided
through the EcoNet port or via wireless (Wi-Fi).

Electrical Power

Hookup Terminals

Ground

Screw
inside

Junction

Box

Control
Board
Assembly

Right Side View

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.

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

EcoNet™
Port

to do so can cause electrical shock
resulting in severe personal injury or
death.

If the water heater has been subjected
to fire, flood or physical damage, DO
NOT operate the water heater again
until it has been checked by a qualified
service technician.

NOTICE: DO NOT use this
appliance if any part has been under
water. Immediately call a qualified
installer or service agency to replace
a flooded water heater. DO NOT
attempt to repair the unit! It must
be replaced.

9

!

!

!

WARNING

WARNING

!

Installing the water heater

Electrical Connections continued...

Ground screw

Conduit

connector

Wire connections

Junction

box cover

Water heater junction box.

DO NOT turn on the
electrical supply or operate
this water heater unless it is
completely full of water.

A separate branch circuit with copper
conductors, overcurrent protective
device and suitable disconnecting
means must be provided by a qualified
electrician.

All wiring must conform to local
codes or latest edition of National
Electrical Code ANSI/NFPA 70.

The water heater is completely wired
to the junction box inside jacket at
the top front of the water heater. An
opening for 1/2 in. or 3/4 in. electrical
fitting is provided for field wiring
connections.

The voltage requirements and wattage
load for the water heater are specified
on the rating plate on the front of the
water heater.

The branch circuit wiring should
include either:

Metallic conduit or metallic

sheathed cable approved for use
as a grounding conductor and
installed with fittings approved
for the purpose.

Non-metallic sheathed cable,

metallic conduit or metallic
sheathed cable not approved for
use as a ground conductor shall
include a separate conductor for
grounding. It should be attached
to the ground terminals of the
water heater and the electrical
distribution box.

CAUTION: The presence of water
in the piping and water heater does
not provide sufficient conduction for a
ground. Non-metallic piping, dielectric
unions, flexible connectors etc. can
cause the water heater to be electrically
isolated.

WARNING: If local codes
require external application of
insulation blanket kits the
manufacturer’s instructions
included with the kit must be
carefully followed.

Insulation Blankets

Insulation blankets, available to the
general public, for external use on electric
water heaters are not necessary. The
purpose of an insulation blanket is to
reduce the standby heat loss encountered
with storage tank heaters. This water
heater meets or exceeds the National
Appliance Energy Conservation Act
standards with respect to insulation and
standby loss requirements making an
insulation blanket unnecessary.

The manufacturer’s warranty does not
cover any damage or defect caused by
installation, attachment or use of
any type of energy saving or other
unapproved devices (other than those
authorized by the manufacturer) into, onto
or in conjunction with the water heater.
The use of unauthorized energy saving
devices may shorten the life of the water
heater and may endanger life and property.

The manufacturer disclaims any
responsibility for such loss or injury
resulting from the use of such
unauthorized devices.

Air lter

must be
accessible.

CAUTION: If local codes require the
application of an external insulation
blanket to this water heater, pay careful
attention to the following so as not to
restrict the proper function and
operation of the water heater:

 DO NOT cover the operating or

warning labels attached to the water
heater or attempt to relocate them on
the exterior of insulation blanket.

 DO NOT cover air openings on both

sides of the water heater .

 DO NOT cover the Controller

Assembly, temperature and pressure
relief valve or drain valve.

 Inspect the insulation blanket frequently.

Vertical
Flexible
Filter

Air Outlet
Opening

Controller
Assembly

10

Relief
Valve

Hot and Cold Pipe Insulation Installation

Install the insulation on the cold water supply inlet and the
hot water outlet as shown in the illustration.

Hot Water
Outlet

Drain Pan

Clips

Water Sensor

Rope Attachment

Point

Drain
Valve

Water Sensor

In order to detect the presence of
unwanted water, this water heater
is supplied with a built-in water
sensing circuit. The water sensor
rope is shipped in the warranty

bag for eld installation.

Remove water sensor rope from
the bag and attach to the connector
located near the lower access
panel. Place the rope in the

Cold Water
inlet

recommended drain pan and
secure to the pan bottom with
provided self adhesive clips.

When water is detected, the
electronic control will turn off

the heating elements, ash the

display backlight and turn on an
audible alarm.

11

Installing the water heater

Ducting Requirements

Always check with local building and
HVAC codes before designing the duct
system

The water heater may be ducted to the
outdoors or another space as described in

these instructions. Ducting congurations

that does not comply with these
guidelines are not supported.

DO NOT connect this water heater to
existing duct work; it must be ducted
separately from other appliances.

Ducting approved for HVAC applications
is required.

Ducting must be adequately supported
along both vertical and horizontal
lengths.

UL Certied terminations must be

used for ducting to the outside. These
terminations have been evaluated to

ensure there is sufcient protection

from rain water entry and resistance to

air ow is minimized.

Indoor registers approved for HVAC
applications is required.

Rigid ducting must be isolated from

oor joists or other structural members

to minimize the transmission of noise
and vibration. A short section (12

inch minimum) of exible duct must

be used between the water heater and
rigid ducting as an isolation method.

Every foot of exible ducting counts as

three feet of rigid ducting.
Ducting must be insulated per HVAC

codes (to prevent condensation).
Ensure cold air exhaust is sufciently

away from structures to prevent
condensation on surfaces.

Maximum heater performance is
obtained by lowering the resistance to

air ow (regular lter maintenance is
benecial) and providing the unit with

warm moist air.
Considerations when planning the duct

system:

 Run the ducting the most direct

route possible.

 Limit the number of elbows/bends.
 Use the largest duct size possible.
 Use the largest termination possible.
 Consider placement and direction of

terminations (reduce recirculation of
exhaust into the intake).

Calculated length of duct is the
length on the inlet plus the length
on the outlet. Any combination of
duct lengths on the inlet and outlet is
supported up to the maximum duct
length (Table 1).

12

Duct System Configuration

The inlet and outlet ducting
connections on the water heater
accepts 8 inch diameter ducting. No
additional adaptors are needed.

7 inch, 6 inch, 5 inch diameter
ducting is supported. Table 1 lists the
total feet of ducting allowed. For
duct diameters smaller than 8 inch

diameter, Table 1 takes into account
the duct reducer(s) and up to 10 feet
of 8 inch rigid ducting (two elbows)
before the duct reducer(s) at the unit.
Duct Reducers must be installed
within 10 feet (two elbows) of the unit
or within 2 feet of the end of the duct.

Table 1.- Maximum Duct Length.

Duct Type / Diameter 8" 7" 6" 5"

Rigid

Flexible

340' 160' 65' 17'
125' 65' 25' --

Equivalent feet for Duct Accessories

Elbows/Bends

Rigid duct elbows and flex bends
greater than 45° is considered an elbow.

Flexible ducting bends’ inner radius
cannot be less than its diameter. If
bends with tighter radiuses are needed,
a rigid elbow must be used.

Maximum number of elbows/bends
allowed are shown in [brackets] in
Table 2.

Terminations/Registers

Table 2 equivalent feet for terminations
includes the rodent screen.

For terminations and registers with
smaller diameters than the duct

diameter, Table 2 accounts for the duct
reducer and termination/register. Smaller
diameter terminations and registers
with more than a 2 ft. connection is not
supported.

Damper

If ducting to the outside using an
exhaust duct only (no intake duct), an
approved Rheem damper should be
installed no further than 10 ft. of rigid
ducting total (two elbows equivalent)
from the unit. This prevents outside
air from coming into the living space.
If ducting air from the outside to
the inlet of the heater, no provision
is made to prevent outside air from
flowing into the living space.

Table 2.- Equivalent feet for Duct Accessories.

Description 8" 7" 6" 5"

Elbows/Flexible Bends (Each)
[Maximum Allowed]

8 inch UL Certied Termination for ducting outside (Each) 5' 5' 5' 5'

Reduced diameter UL Certied Termination for ducting outside (Each) N/A 10' 15' 20'

8 inch Register for ducting inside (Each) 5' 5' 5' 5'

Reduced diameter Register for ducting inside (Each) N/A 10' 15' 20'

Rodent Screen (must be greater than 83% open area) (Each) 1' 1' 1' 1'

Rheem approved 8" diameter Duct Damper 25' 20' 10' 5'

Table 2 lists equivalent feet for duct accessories and reduced diameter terminations.

5'

[8]

5’

[6]

5’

[4]

5’

[2]

Accessory Kits

Part Number Description User For

SP20882 Earthquake Isolation Kit for Hybrid Water Heater. Installations in Seismic Regions.

SP20883 Vibration Isolation Kit for Hybrid Water Heater.

SP20884 8” Dia. UL Certied Termination kit.

SP20885 7” Dia. UL Certied Termination kit.

SP20886 6” Dia. UL Certied Termination kit.

SP20887 5” Dia. UL Certied Termination kit.

SP20888 8" Rheem Approved Damper Kit.

SP20889 25’ Flexible 8” dia. duct kit.

SP20890 Rigid Elbow duct kit.

Installation on Non-Concrete

oors.

Termination to the outside or to
attic with 8" diameter.

Termination to the outside or to
attic with 7" diameter.

Termination to the outside or to
attic with 6" diameter.

Termination to the outside or to
attic with 5" diameter.

Exhaust only to the outside Ducting

Conguration (No inlet Duct).

For up to 25' of Ducting.

Installation in tight places where
space needs to be minimized.

13

Installation Checklist

Ducting Example:

Exhaust/Inlet or both? Both, Inlet and Outlet

NOTICE: These
seven questions
should be answered
to ensure correct duct
configuration.

See Ducting Example.

Ducting to outside of building or another room? Outside building.

Length of duct from water heater to termination? 20 ft.

Flexible or Rigid ducting? Flexible.

Diameter of ducting used? 8 in. Diameter

Diameter of wall penetrations? 5 in. Diameter

Number of elbows/bends? 3 Total – One on inlet and Two on Outlet

I. Does calculated ducting length exceed maximum allowable table?
a. 20 ft. (Outlet duct length)
b. 10 ft. (1 rigid elbow and 1 bend on outlet)
c. 20 ft. (reduced diameter termination outlet)
d. 20 ft. (Inlet duct length)
e. 5 ft. (1 Bend on inlet)
f. 20 ft. (reduced diameter termination inlet)
g. Total = 20+10+20+20+5+20 = 95 ft.
Using flexible 8 in. diameter duct, the maximum duct length allowed is 125

ft.; therefore, because 95 ft. is less than 125 ft., this is an acceptable ducting
configuration.

Accesory Kits SP20887 (2 Kits), SP20889 (2 Kits) and SP20890 (1 Kit) should
be purchased for this installation.

Rigid Adjustable

Flex Duct

Insulation Extented

over Rigid Ducting

and secured with

Duct Tie

Rigid Duct

secured with 4

screws to unit

ange

Elbow

Flex Duct secured and

sealed with Duct tie

(2 places on Inlet)
(1 place on Outlet

to secure Flex Duct to unit ange)

8” Insulated

Flex Duct

6” Clearance

for lter

Duct Reducers

8” Insulated

Flex Duct

Flex Duct Insulation

extended over reducers

and secured with Duct tie

8” to 5”

Air Inlet

UL Certied

terminations

Cold

Air Exhaust

HVAC tape used

to seal Reducer

and termination joints

Horizontal Duct

Installation

Once the duct terminal
location has been
determined, make a hole
through the exterior wall
to accommodate the UL
Certified Termination.
Termination must exit
exterior wall horizontally
only.

Complete rest of the
duct pipe installation to
the water heater’s duct
connector fitting.

If necessary, support
horizontal run as
previously mentioned.

14

A. Water Heater Location

❑ Close to area of heated water demand.

❑ Indoors and protected from moisture,

wet conditions, freezing temperatures
(below 32°F) and High temperatures
(above 140°F).

❑ Area free of flammable vapours.

❑ Provisions for Air Cirulation (Louvered

doors on ducting).

❑ Provisions made to protect area from

water damage.

B. Water Supply

❑ Water heater completely filled with

water.

❑ Air purged from water heater and piping.

❑ Sufficient room to service heater.

❑ Six inches (6") of clearance from ceiling

to top of Hybrid Water Heater to allow
for filter maintenance.

❑ Access to condensate disposal.

❑ Vibration Isolation Kit (Non-Concrete

floors).

❑ Hybrid seismic Kit (if required)

❑ Water connections tight and free of

leaks.

❑ Flexible water connections.

C. Relief Valve

❑ Temperature and Pressure Relief Valve

properly installed and discharge line run
to open drain.

D. Wiring

❑ Power Supply voltage agrees with water

heater rating plate.

❑ Branch circuit wire and fusing or circuit

breaker of proper size. (Recommended
15 amp & 30 amp breaker for select
models).

E. Condensate Lines

❑ Condensate lines from heat pump

installed correctly.

F. Ducting

❑ HVAC approved ducting.

❑ Discharge line protected from freezing.

❑ Electrical connections tight and unit

properly grounded.

❑ 10 gauge wire.

❑ Condensate lines from heat pump run to

a suitable drain location.

❑ Insulated duct.

❑ Calculated length of duct no greater than

maximum allowed.

❑ UL Certified terminations (For ducting

to the outside).

❑ Ducting adequately supported.

❑ Ducting adequately isolated from structure.

15

!

Operating the water heater

CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been
used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!!
To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several
minutes at the kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is
present, there will be an unusual sound such as air escaping through the pipe as the water begins to flow. DO NOT
smoke or use an open flame near the faucet at the time it is open.

Safety Precautions

Disconnect all power to water

heater if it has been subjected to
over heating, fire, flood, physical
damage.

DO NOT turn on water heater

unless it is filled with water.

DO NOT turn on water heater if

cold water supply shut-off valve
is closed.

If there is any difficulty in

understanding or following the
Operating Instructions or the
Care and Cleaning section, it is
recommended that a qualified
person or serviceman perform the
work.

WARNING: If the water
heater has been subjected
to fire, flood or physical
damage, disconnect all
power to water heater, and
DO NOT operate the water
heater again until it has
been checked by a qualified
service technician.

NOTICE: DO NOT use
this appliance if any part
has been under water.
Immediately call a qualified
installer or service agency
to replace a flooded water
heater. DO NOT attempt
to repair the unit! It must
be replaced.

DANGER: There is a
hot water scald potential if
the thermostat is set too
high. Households with small
children, disabled, or
elderly persons may require
a 120°F or lower thermostat
setting to prevent contact
with HOT water.

16

Safety Controls

The water heater is equipped with a
temperature limiting control (ECO)
that is located above the upper heating
element in contact with the tank
surface. If for any reason the water
temperature becomes excessively
high, the temperature limiting control
(ECO) breaks the power circuit to
the heating element. Once the control
opens, it must be reset manually.

CAUTION: The cause of the high
temperature condition must be
investigated by qualified service
technician and corrective action
must be taken before placing the
water heater in service again.

Water Temperature Setting

The temperature of the water in the
water heater can be regulated by
selecting the desired temperature on
control display.

Safety and energy conservation
are factors to be considered when
selecting the water temperature setting
of the water heater. The lower the
temperature setting, the greater the
savings in energy and operating costs.

To comply with safety regulations the
temperature is factory set at 120°F or
less where local codes require. This is
the recommended starting point.

Water temperatures above 125°F can
cause severe burns or death from
scalding. Be sure to read and follow
the warnings outlined in this manual
and on the label on the water heater.

To reset the temperature limiting
control: (Refer to Illustration in Cavity
Insert section):

Disconnect all power to unit

before starting maintenance.

Remove the upper cavity cover

and insulation.

Press the red RESET button.

Replace the insulation, jacket

access panel and plastic housing
before turning on the power to
the water heater.

This label is located on the front of the
water heater.

Mixing valves are recommended
for reducing point of use water
temperature by mixing hot and cold
water in branch water lines. It is
recommended that a mixing valve
complying with the Standard for
Temperature Actuated Mixing Valves
for Hot Water Distribution Systems,
ASSE 1017 be installed. See page 4
for more details and contact a licensed
plumber or the local plumbing
authority for further information.

The chart on the page 3 may be used
as a guide in determining the proper
water temperature for your home.

Basic Water Heater Operation

Navigating the Home Screen

WiFi Connection Status

Temperature
Setting

Temperature
Adjustment

Settings Button

Energy Saver Mode

120°

warm hot very hot

StatusSettings

Status Button

Operational Control and Modes

Service Mode

Service Button

Current Operating
Mode

Temperature
Adjustment

Operating Mode
Button

Once power is applied to the water heater, the Operational Control But­tons can be used to activate the heating of water.

Energy Saver Mode

120°

warm hot very hot

StatusSettings

To turn the water heating "On", press
the "Mode" button once.

Water heater ships in the default "Energy
Saver" mode with a temperature setting
of 120° F.

Service Mode

Recommended temperature setting
120° F.

To turn the water heating "OFF", press
the "Mode" button repeatedly until the
screen displays "Water Heater Off"
Mode".

17

Basic Water Heater Operation

Operating Mode

Press the "Mode" button repeatedly to select one of the six modes of operation (the
“Off” Mode has been discussed previously). The active mode is displayed on top of the
screen.

NOTICE: Energy Saver
mode is not recommended
for water systems utilizing
recirculation.

Heat Pump Mode

120°

warm hot very hot

StatusSettings

Service Mode

Energy Saver Mode

120°

warm hot very hot

StatusSettings

Service Mode

High Demand Mode

120°

warm hot very hot

Heat Pump

This mode will heat with Heat Pump
operation and will not use electric heat
during typical heating and demand cycles.
This mode has a low recovery, but minimizes
power consumption.

Energy Saver - Factory set mode for
shipping.

This mode optimizes Heat Pump and electric
heat that results in low power consumption
and High recovery.

High Demand

This mode provides the highest recovery
while still providing good energy savings.
Water heater operates Heat Pump and electric
heat simultaneously.

18

StatusSettings

Service Mode

Electric Mode

120°

warm hot very hot

StatusSettings

5 Days

Vacation Mode

StatusSettings Service Mode

Service Mode

Electric

This Mode will heat with the electric
resistance elements. This mode should only
be used during filter and condensate drain
maintenance periods. This mode will result
in maximum power consumption.

(See "Elec. Heat Override Time" in Settings).

Vacation

This mode will allow duration setting
between 1 and 28 days or set indefinitely
with the "Hold" setting. Tank temperature
will be maintained at about 65º F.

DANGER: Hotter water

Energy Saver Mode

StatusSettings

warm hot very hot

Service Mode

120°

increases the potential for

HOT water SCALDS

Temperature Adjustment

Tank temperature will be maintained according to the setting on the Home
Screen. If the water temperature setting needs adjustment, use the arrows on the
control display to select desired temperature.

Energy Saver Mode

Arrows to

adjust

temperature

Settings

120

warm hot very hot

StatusSettings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

°

Service Mode

settings

wifi setup

The Settings Screen allows the following changes:

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

wifi setup

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

settings

wifi setup

Temperature Display Units: The
temperature display on the Home Screen can
be set to Fahrenheit or Celsius.

To change temperature unit, press Fahrenheit
to highlight, then press up/down buttons to
change to Fahrenheit/Celsius.

Home Screen Lock: The Home Screen can
be locked to eliminate accidental changing of
the Mode or Temperature.

To lock or unlock the screen, press No to
highlight, then press up/down buttons to
change Yes/No.

19

Basic Water Heater Operation

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

wifi setup

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

wifi setup

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

wifi setup

Beep on Alarm: The audible Alarm tone can
be disabled during service periods.

To Enabled/Disabled the audible alarm, press
"Enabled" to highlight, then press up/down
buttons to change to Enabled/Disabled.

EcoNet Network Instance: This number can
be set between 1 and 32. Instance is the way

an EcoNet network identies each appliance

of the same model on the network.

To change the instance number, press "1" to
highlight, then change the number pressing
the up/down buttons.

High Temperature Enable: This setting
can be set to “Yes” if a tank temperature
higher than 140°F is desired. This setting will
automatically turn “No” after 10 minutes of
inactivity on the user interface.
To enable or disable temperature adjust, press
"No" to highlight, then press up/down buttons
to change to Yes/No.

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No
Elec. Heat Override Time 3 days

wifi setup

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No

Elec. Heat Override Time 3 days

wifi setup

Elec. Heat Override Time: This setting can
be set from 1 to 7 days and will return the unit

to the previous (more efcient) mode after the

set number of day is complete.
To set the days, press "3 days" to highlight,
then press up/down buttons to adjust the days.

WiFi Setup: This button used when setting
up a new wireless connection. Please refer to
the Wi-Fi section for more information.

20

Service

Energy Saver Mode

Mode

Service

Energy Saver Mode

StatusSettings

Service Mode

120°

The Service screen provides information on the product description, testing
software version, and alarms. Alarm details can be found in the “Troubleshooting
Alarm Codes” section of the manual.

In case there is an active alarm, the “alarms” button will blink in the lower right
corner. Pressing the “Alarms” button will show a new screen containing the active

alarms and alarm history.

service

Service Assistance #: 800-432-8373
WiFi/Mobile App Support: 800-255-2388
Product Model Number:
Product Serial Number:
Software Version Number:

Water Heater Test Off

WH-HPW4-H3-01-27

Status

The Status screen provides information on the current operating status, diagnostics,
and sensors.

Pressing the "wi status" button will show a screen with the Wi-Fi connection status.

Please refer to the Wi-Fi section for more information.

Pressing the "sensors" button will show
a screen containing the temperature
readings of the tank and Heat Pump
System.

status

Water Heater Mode Off: ECO Trip

Electric Heat Control Off

Compressor Relay Off

Evaporator Fan Control Off

EXV Current Position 100.0%

sensorswifi status

sensors

Upper Tank Temperature 73.6˚
Lower Tank Temperature 72.3˚
Ambient Temperature 74.9˚
Suction Temperature 74.9˚
Evaporator Temperature 75.4˚
Discharge Temperature 75.3˚

21

Basic Water Heater Operation

Wi-Fi

To complete Wi-Fi Setup on initial power up

Your heater has integrated Wi-Fi capability. By connecting
your heater to the internet, you can access the full benefits
of the water heater, including remote control, leak detection
alerts, and diagnostic alerts on your mobile device.

Wi-Fi Setup

1. Upon initial power up of the water
heater, the user will be prompted to

Would you like to connecto to the Internet

for remote control, leak detection alerts,

and diagnostic alerts on your mobile device?

configure the wireless connection.

a. Tap "Get Started" to start this process

immediately, or

GET STARTED SETUP LATER

b. "Setup Later" to setup at a later time.

If setting up at a later time, skip to
"To Complete Wi-Fi Setup after initial
power up".

2. Download the Rheem EcoNet app via the App Store or Google Play to your mobile
device.

3. Create an account and sign in.

4. The following screen should appear. Follow the instructions on the screen to connect
your water heater to the internet.

Wi-Fi Setup

Ready To Connect

• Download the EcoNet app on your mobile device

• Use the app to create an EcoNet account

• Tap “WiFi Setup” below if blinking

• When “Ready to Connect” appears at the top of this
screen use the mobile app to complete the setup process

22

wifi statussetup in progress

To complete Wi-Fi Setup after initial power up

settings

Temperature Display Fahrenheit
Screen Adjustment Lock? No
Beep On Alarm Enabled
EcoNet Network Instance 1
High Temp Adjust Enable No

Elec. Heat Override Time 3 days

wifi setup

1. From the Home Screen, tap Settings,
then wifi setup. Alternately, you may tap
the wifi icon on the home screen, then
tap the wifi setup button.

2. Tap "Get Started" to start the process.

Would you like to connecto to the Internet

for remote control, leak detection alerts,

and diagnostic alerts on your mobile device?

GET STARTED SETUP LATER

Wi-Fi Setup

3. Download the Rheem EcoNet app via the App Store or Google Play to your mobile
device.

4. Create an account and sign in.

5. The following screen should appear. Follow the instructions on the screen to connect
your water heater to the internet.

Wi-Fi Setup

Ready To Connect

• Download the EcoNet app on your mobile device

• Use the app to create an EcoNet account

• Tap “WiFi Setup” below if blinking

• When “Ready to Connect” appears at the top of this
screen use the mobile app to complete the setup process

wifi statussetup in progress

Wi-Fi Status

From the Home Screen, the wifi symbol reflects your current wifi signal strength. A
slash through the icon can indicate that the wifi has not been setup, or has otherwise lost
connection to the internet.

Electric Saver Mode

120°

warm hot very hot

StatusSettings

Service Mode

Water Heater Off Mode

StatusSettings Service Mode

23

Basic Water Heater Operation

status

sensorswifi status

Water Heater Mode Energy Saver

Electric Heat Control Off

Compressor Relay On

Evaporator Fan Control Low Speed

EXV Current Position 60.0%

To view the wifi status screen, either tap the wifi icon from the home screen, or go to
Status and tap the wifi status button.

Energy Saver Mode

120°

warm hot very hot

24

StatusSettings

Service Mode

The Wifi Status Screen communicates the following information:

wifi status

WiFi Device Status....................Connected To Internet

WiFi Signal Strength [dBm]......-35

Econet wifi sw vesion...............RH-WIFI-02-01-05

WiFi Module sw version............14.76.36.p103

MAC Address.............................F0-03-8c-1E-36-D3

SSID...........................................rheemsm

IP Address.................................10.78.30.243

Subnet Mask..............................10.78.30.1

Gateway.....................................255.255.255.0

wifi setup

1. Wifi Device Status: This field tells the user
the current status of the integrated wifi
device. These status' can include:

A. WiFi Disabled - tap the wifi setup
button to enable wifi on your water heater.

B. Ready to Connect - The wifi is ready

and can be connected using your
mobile device using the Rheem EcoNet
app.

C. WLAN Connecting - The device is

currently connecting to your local wifi
network using the credentials provided
during setup.

D. Connecting to Cloud - The device has

connected to the wireless network,
and is now connecting via the Rheem
EcoNet App.

E. Connected to Internet - Your device is

connected to the wireless network, and
connected to the Rheem EcoNet App.

F. Server Connection Error - The water

heater is connected to the wireless
network, but cannot connect to the
Rheem EcoNet App. Please check that
your wireless network has access to the
internet.

G. WLAN Network Not Found - The

water heater cannot detect the wireless
network provided during setup. Please
check that your wireless network is
available.

2. WiFi Signal Strength

3. EcoNet WiFi and WiFi Module software
version

4. MAC Address

5. SSID-The name of the wireless network
the heater is connecting to.

6. IP Address

7. Subnet Mask

8. Gateway

Care and cleaning of the water heater

Draining the Water Heater

DANGER: Before
manually operating the
relief valve, make certain
no one will be exposed to
the danger of coming in
contact with the hot water
released by the valve. The
water may be hot enough to
create a scald hazard. The
water should be released
into a suitable drain to
prevent injury or property
damage.

NOTICE: If the
temperature and pressure
relief valve on the
water heater discharges
periodically, this may be
due to thermal expansion
in a closed water system.
Contact the water
supplier or your plumbing
contractor on how to
correct this. DO NOT plug
the relief valve outlet.

CAUTION: Shut off power to the

water heater before draining water.

DANGER: Before manually
operating the relief valve, make
certain no one will be exposed to the
hot water released by the valve. The
water drained from the tank may be
hot enough to present a scald

In order to drain the water heater, turn
off the cold water supply. Open a hot
water faucet or lift the handle on the
relief valve to admit air to the tank.

Attach a garden hose to the drain
valve on the water heater and direct
the stream of water to a drain. Open
the valve.

hazard and should be directed to a
suitable drain to prevent injury or
damage.

Routine Preventative Maintenance

Properly maintained, your water heater
will provide years of dependable
trouble-free service.

It is suggested that a routine
preventive maintenance program be
established and followed by the user.

Most electrical appliances, even
when new, make some sound when
in operation. If the hissing or singing
sound level increases excessively,
Contact a qualified installer or
plumbing contractor to inspect.

IMPORTANT: See "DANGER
on left". At least once a year, lift

and release the lever handle on the
temperature pressure relief valve,
located on the side of the water heater,
to make certain the valve operates
freely. Allow several gallons to flush
through the discharge line to an open
drain.

It is recommended to clean the filter
on top of the heat pump when "Clean
filter reminder" alert appears. Clean
by washing with mild detergent and
water. Dry and replace. Remove the
filter by lifting up, then replace by
lowering back into the filter slot on
top of the unit. See Figure below.

At least once a year pour a cup of
bleach in the access opening of the
condensate drain to kill any algae,

mold, or mildew that has formed in
the pipe. Ensure the condensate can
flow freely; unclog if needed.

A water heater’s tank can act as a
setting basin for solids suspended
in the water. It is therefore not
uncommon for hard water deposits to
accumulate in the bottom of the tank. It
is suggested that a few quarts of water
be drained from the water heater’s tank
every month to clean the tank of these
deposits.

Rapid closing of faucets or solenoid
valves in automatic water using
appliances can cause a banging noise
heard in a water pipe. Strategically
located risers in the water pipe system
or water hammer arresting devices can
be used to minimize the problem.

Filter
Handle

Vertical
Flexible
Filter

25

NOTICE: Refer to the
Hydrogen Gas Caution in
the Operating Instructions.

NOTICE: DO NOT remove
the anode rod from the
water heater’s tank.
Operation with the anode
rod removed will greatly
shorten the life of the glass
lined tank and will exclude
warranty coverage.

Vacation and Extended Shut-Down

If the water heater is to remain idle for
an extended period of time, the power
and water to the appliance should
be turned off to conserve energy
and prevent a build-up of dangerous
hydrogen gas.

The water heater and piping should be
drained if they might be subjected to
freezing temperatures.

After a long shut-down period, the
water heater’s operation and controls
should be checked by qualified service
personnel. Make certain the water
heater is completely filled again before
placing it in operation.

Anode Rod

This water heater is equipped with an
anode rod designed to prolong the life
of the glass-lined tank. The anode rod is
slowly consumed, thereby eliminating
or minimizing corrosion of the glass­lined tank.

Water sometimes contains a high
sulfate and/or mineral content and
together with cathodic protection
process can produce a hydrogen sulfide,
or rotten egg odor in the heated water.
Chlorination of the water supply should
minimize the problem.

26

Before You Call For Service…

!

Troubleshooting Tips
Save time and money! Review the chart on this page first and you may not need to call for service.

Problem Possible Causes What to Do

Rumbling noise

Water conditions in your
home caused a build up of
scale or mineral deposits in
the water heater.

● Allow a few quarts of water to run from drain valve

to remove sediment settlings.

Relief valve
producing popping
noise or draining

Not enough or no
hot water

Water is too hot

Pressure build up caused
by thermal expansion in a
closed system

Water usage may have
exceeded the capacity of
the water heater.

A fuse is blown or a circuit
breaker tripped

Electric supply may be off

The thermostat may be set
too low.

Leaking or open hot water
faucets

Electric service to your
home may be interrupted

Improper wiring.

Manual reset limit (ECO)

Cold water inlet
temperature may be colder
during the winter months

Not enough air exchange

for Efcient Heat Pump

Operation.

The thermostat is set too
high.

● This is an unacceptable condition and must be

corrected. Contact the water supplier or plumbing
contractor on how to correct this. DO NOT plug the
relief valve outlet

● Wait for the water heater to recover after an abnormal

demand

● Replace fuse or reset circuit breaker

● Conrm electric supply to water heater and see

installation section of this manual.

● See the Temperature regulation of the water heater

section of this manual

● Make sure all faucets are closed

● Contact the local electric utility.

● See the Installing the water heater section of this

manual.

● See the Temperature regulation of the water heater

Refer to page 3 for more information.

● This is normal. The colder inlet water takes longer to

heat.

● If air temperature drops more than 15°F during Heat

Pump Operation, more air circulation around heater
is needed.

● See the Temperature regulation of the water heater

section of this manual

CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or
other safety devices. Refer repairs to qualified service personnel.

27

Energy Saver Mode

Mode

Service

Troubleshooting Alarm Codes

Troubleshooting Tips
Save time and money! Review the chart on this page first and you may not need to call for
service.

The water heater will make an audible beep for notification of Alarms. The following
steps should be used in determining the Alarm code:

1) Press Blinking "Service"
Button on the Home Screen

2) Press Blinking "alarms"
Button on the Service Screen

Energy Saver Mode

120°

warm hot very hot

StatusSettings

service

Tech Service Phone #: [phone]

Product Model Number:

Product Serial Number:

Software Version Number:

Water Heater Test Off

Current Alarm

Service

WH-HPW4-H2-00-81

History of all Alarms.
(up to 6 Alarms)

Mode

alarms

3) Alarm will be listed on
alarms Screen*.

* A101 Alarm shown as an
example. During normal
operation, there should not
be any alarm listed under
“Current Alarms”.

The following page details
Alarm codes.

More information is available
by selecting alarm and then
pressing "more info".

28

Current Alarms

A101 Suction Temperature Sensor Failure

Alarm History

T300 Water Leak Sensor Not Installed
A200 High Water Temp! [ECO] Call Tech Service
A106 Discharge Temp Sensor Failure
A105 Evaporator Temp Sendor Failure
A104 Upper Heater Temp Sensor Failure
A103 Lower Heater Temp Sensor Failure

clear

alarms

Trouble-Shooting

A101 Suction Temperature Sensor Failure

This fault code indicates the thermistor is
either in an open or shorted electrical state.
Call Tech Support

clear

history

more

info

Code Descripon Heater Funcon What To Do

A004 Compressor Shutdown: Discharge-Sucon Trip.

T005 Compressor Shutdown: Discharge Temp High.

A006 Sucon Temperature Too Low.

T007 Compressor Shutdown: Comp.Feedback Failure

A007 Compressor Shutdown: Comp.Feedback Failure.

A008 Detected Dry Fire Condion.

T009 Compressor wiring may be faulty.

A101 Sucon Temperature Sensor Failure.

A102 Ambient Temperature Sensor Failure.

A103 Lower Heater Temp Sensor Failure.

A104 Upper Heater Temp Sensor Failure.

A105 Evaporator Temp Sensor Failure.

A106 Discharge Temp Sensor Failure.

A107 Water Detected on Floor: Check for Leaks.

A108 Condensate Blocked: Unclog Line.

A125 Lower Element Error or Relay Stuck Closed.

A126 Upper Element Error or Relay Stuck Closed.

A127 Element Wire Roung Error .

A128 Lower Element Relay Failure to Close Error.

A129 Upper Element Relay Failure to Close Error.

A130 Unit O/Air Temp Freezing: Enable Unit.

T131 Clean Filter Reminder

T132 Water Heater diculty sasfying demand.

Heang source defaults to
elements due to compressor
malfuncon.

Heang source defaults to
elements due to low air ow.

Heang source defaults to
elements due to compressor
malfuncon.

Dry Fire Protecon-­Not sucient water in the
storage tank. Heater disabled.

Heang source defaults to
elements due to compressor
malfuncon.

Heang source defaults to
elements due to heat pump

temperature sensor

malfuncon.

Lower Tank Temperature
Sensor malfuncon. Heater
disabled.

Upper Tank Temperature
Sensor malfuncon. Heater
disabled.

Heating source defaults to
elements due to heat pump
temperature sensor malfuncon.

Water is detected in the drain

pan.

Heang source defaults to
elements due to condensate
drain blockage.

Heang element or
Control board failure. Heater
disabled.

Elements mis-wired or
control board failure. Heater
disabled.

Control board relay failure.
Heater Disabled.

Ambient temperature below
freezing. --FREEZE WARNING

Air lter roune
maintenance reminder.

Water Heater cannot

sasfy demand.

Call Tech Support at 1-800-995-0982.

1. Check air lter and clean if necessary.

2. Check fan operaon.

3. Check ducng for blockages (if applicable).

4. Refer to Use and Care Manual.

5. Call Tech Support at 1-800-995-0982.

Call Tech Support at 1-800-995-0982.

1. Fill storage tank with water.

2. Purge all air from the storage tank by
running a hot water faucet.

3. Refer to Use and Care Manual.

4. Call Tech Support at 1-800-995-0982.

Call Tech Support at 1-800-995-0982.

1. Check for water leaks.

2. Refer to Use & Care Manual

3. Call Tech Support at 1-800-995-0982.

1. Clean condensate drain.

2. Refer to Use & Care Manual

3. Call Tech Support at 1-800-995-0982.

1. Disconnect power to unit.

2. Call Tech Support at 1-800-995-0982.

1. Disconnect power to unit.

2. Contact your installer/contractor to
rewire elements properly.

3. Call Tech Support at 1-800-995-0982

Call Tech Support at 1-800-995-0982.

Select mode to enable heater.

1. Set mode to Electric or O.

2. Remove air lter and clean by washing
with mild detergent.

3. Dry air lter and reinstall.

4. Set unit to desired mode.

1. Check for open faucets.

2. Check for water leaks.

3. Refer to Use & Care Manual.

4.Call Tech Support at 1-800-995-0982.

29

Troubleshooting Alarm Codes Cont.

Code Descripon Heater Funcon What To Do

1. Disconnect power to unit.

A200 High Water Temp! [ECO].

T300 Water Leak Sensor Not Installed.

A900

T901

A902

Controller Fault.

A903

A904

A905

ECO Tripped. Heater
disabled.

Water Leak Sensor Not
Installed.

Controller Malfunon.
Heater disabled.

2. Refer to Use and Care Manual.

3. Call your installer/contractor.

4. Call Tech Support at 1-800-995-0982.

1. Install Water Leak Sensor

2. Refer to Use and Care Manual.

Call Tech Support at 1-800-995-0982.

30

Replacement Parts.

!

Instructions For Placing a Parts Order

Address parts orders to the distributor
or store where the heater was
purchased.

All parts orders should include:

The model and serial number of

the water heater from the rating
plate located on the tank jacket.

Specify voltage and wattage as

marked on the rating plate.

Part description (as noted below)

and number of parts desired.

Available Replacement Parts

Part #

AP17344
AP17967
AS38409
AP17940
AP18553
AP16830D
AP18708JL
AP10869NM
AS23557
AP18296
AP17455
AS46605
AP18217
AP16581A
AS46443
SP8878N
AP14837G

AP18087
AS46442

AP17980
AP19134
AP17512

Description

Air Filter
Capacitor
Cavity Cover
Condensate water sensor
Controller Assembly*
Drain Valve
Element (2250W)
Element (5000W)
Element Bracket
EXV solenoid w/wiring
Faceplate
Fan Assembly
Fan Motor
Inlet Diffuser Tube
Lower Thermistor
Outlet J-tube
Temperature & Pressure
Relief Valve
Thermistor
Upper Thermistor &
ECO Assembly
Water Leak Sensor

Wiring Harness for Heat
Pump Thermistors

* NOTICE: Check the water heater's rating label on the

front of the unit for the acceptable element wattage.

CAUTION: For your safety DO NOT attempt repair of
electrical wiring, heating elements, heat pump or electronic
controls. Refer repairs to qualified service personnel.

WARNING!
FLAMMABLE CONTENTS UNDER PRESSURE. The
compressor is not a serviceable part. The compressor wiring
terminals may arc allowing pressurized refrigerant and oil to
escape, ignite and cause serious bodily injury, severe burns or
death.

Air Filter

Controller
Assembly

Faceplate

Capacitor

Upper Thermistor

Outlet
J-tube

& ECO

Element

Cavity
Covers

Service Part Options for AP18553

SP18553A
SP18553B

30 Amp model option
15 Amp model option

Lower
Thermistor

Element
Bracket

Drain

Temperature &

Valve

Pressure Relief
valve

Inlet
diffuser tube

31

Cavity Insert Instructions

The following instructions are intended for qualified

service personnel ONLY, and should only be done

when necessary.

In order to replace the ECO,thermistor or heating
element, remove the cavity insert crossbar by
following the instructions below:

ECO

Reset

Button

Disconnect all power to unit before to starting

maintenance.

Remove the jacket access panel(s) and insulation.

Rotate the crossbar up and down until it breaks

away from the remainder of the cavity insert.
(See illustration to the left)

Discard the crossbar. It cannot and need not be

replaced.

Replace the ECO,thermistor and/or element as
necessary.

Replace the insulation, jacket access panel(s) and

plastic housing before turning on the power to
the water heater.

NOTICE: The cavity insert crossbar is necessary
for the manufacturing process only. The removal
of the crossbar will not interfere with the operation
of the water heater.

32

Wiring Diagram

* ON SOME MODELS ONLY

WIRING DIAGRAM

COMM.
PORT

208-240V, 1 PH.

L2

L1

JCT BOX

RD

BK

ECONET

PORT

LE

UE

COMP

NO

COM

NO

COM

NO

FAN

COM

HEAT
PUMP

TANK

GR

POWER

BK

RD

WH

BL

BR

OR

BK

YW

RD

BR
BK

GR

RD PR

R

S

COMP

OLP

YW

C

BR

CAP

RD

GR

LEAK

COND

EXV

YW

ST

BL
BL

YW

WH
WH

GY
GY

DT

ET

AT

FAN

BR

BK

BL

GND
NUT

COMPONENT CODE

AT AMBIENT TEMPERATURE
CAP CAPACITOR
COMP COMPRESSOR
COND CONDENSATE SENSOR (SOME MODELS ONLY)
DT DISCHARGE TEMPERATURE
ECO EMERGENCY CUT OFF
ET EVAPORATOR TEMPERATURE
EXV ELECTRONIC EXPANSION VALVE
FAN FAN
GND

GROUND NUT ON TANK

NUT
HPS HIGH PRESSURE SWITCH
JCT

JUNCTION BOX

BOX
LE LOWER ELEMENT
LEAK LEAK SENSOR (SOME MODELS ONLY)

OLP OVERLOAD PROTECTOR
PCB PROGRAMMED CONTROL BOARD
ST SUCTION TEMPERATURE
TB TERMINAL BLOCK
TTL TANK TEMPERATURE - LOWER
TTU TANK TEMPERATURE - UPPER
UE UPPER ELEMENT

BL

WATER
HEATER

ECO

UE

LE

RD

3

RD

4

RD

TTU

RD

TTL

WH

WH

YW

YW

BK

1

BL

BK

2

BR

OR

WH

33

Notes:

34

Notes:

35

IF YOU NEED SERVICE

1. Should you have any questions about your new water heater, or if it
requires adjustment, repair, or routine maintenance, it is suggested that you
first contact your installer, plumbing contractor or previously agreed upon
service agency. In the event the firm has moved, or is unavailable, refer
to the telephone directory, commercial listings or local utility for qualified
service assistance.

2. Should your problem not be solved to your complete satisfaction, you
should then contact the Manufacturer’s National Service Department at
the following address:

800 Interstate Park Drive

Montgomery, Alabama 36109
Phone: [phone].

When contacting the manufacturer, the following information will be

requested:

a. Model and serial number of the water heater as shown on the rating

label located on front of the water heater.

b. Address where the water heater is located and physical location.
c. Name and address of installer and any service agency who performed

service on the water heater.

d. Date of original installation and dates any service work was performed.
e. Details of the problems as you can best describe them.
f. List of people, with dates, who have been contacted regarding your

problem.

36