Bradford White RE2H50R10B-1NCWT Original instructions

49-50301 08-14
Important Safety Information...2-4
Operating Instructions
Control Panel ..........................................5
Powering Unit.........................................6
Temperature Setting............................7
Operational Modes...............................8
Frequently Asked Questions (FAQ)..9
Care and Cleaning ........................... 10
Installation Instructions................ 13
Troubleshooting Tips...................... 19
Write the model and serial
numbers here:
Model # ________________
Serial # _________________
You can nd them on the rating label
on the front side of your water heater.
RE2H50R10B-1NCWT
RE2H80R10B-1NCWT
Owner’s Manual &
Installation Instructions

ré
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Manuel d’utilisation
et d’installation
Manual del propietario
e instalación
La section française commence à la page 24
La sección en español empieza en la página 46


Printed in USA

2
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
SAVE THESE INSTRUCTIONS
WARNING!
For your safety, the information in this manual must be followed to minimize the risk of re or explosion, electric shock, or to prevent
property damage, personal injury, or loss of life.
Be sure to read and understand the entire Owner’ s 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
qualied service technician or the local electric utility.
WATER TEMPERATURE ADJUSTMENT
Safety and energy conservation are factors to be considered when selecting the water temperature setting via the water heater’s
user interface. 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 top of the tank.
Time/Temperature Relationship in Scalds
Temperature Time to Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1-1/2 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 (66°C) About 1-1/2 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.
Thermostat has been set at the factory to 120°F (49°C) to reduce
the risk of scald injury.
NOTE: Households with small children, disabled or elderly
persons may require a 120°F (49°C) or lower thermostat setting
to prevent contact with “HOT” water.
DANGER: There is a Hot Water SCALD Potential if
the control water temperature is set too high.
Mixing valves for reducing point-of-use water temperature by
mixing hot and cold water in branch water lines are available.
Contact a licensed plumber or the local plumbing authority for
further information.


3
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
CAUTION!
Risk of Fire - 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.
WARNING!
Risk of Fire - DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
Keep rags and other combustibles away.
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 (236.4 L) capacity, a brochure with
generic earthquake bracing instructions can be obtained from: Office of the State Architect, 400 P Street, Sacramento, CA
95814 or you may call 916.324.5315 or ask a water heater dealer.
Applicable local codes shall always govern installation. For residential water heaters of a capacity greater than
52 gallons (236.4 L) consult the local building jurisdiction for acceptable bracing procedures.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm.

4
SAVE THESE INSTRUCTIONS
WARNING:
If the water heater has been subjected to flood, fire, or physical
damage, turn off power and water to the water heater.
Do not operate the water heater again until it has been thoroughly
checked by qualified service personnel.
Safety Precautions
A. Do turn off power to water heater if
it has been subjected to overheating, fire, flood or physical
damage.
B. Do Not turn on water heater unless
it is filled with water.
C. Do Not turn on water heater if cold water supply shut-off valve
is closed.
NOTE: Flammable vapors may be drawn by air currents from
surrounding areas to the water heater.
D. 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.
The water heater is equipped with a temperature-limiting control
(TCO) that is located above the heating element in contact with
the tank surface. If for any reason the water temperature becomes
excessively high, the temperature-limiting control (TCO) breaks
the power circuit to the heating element. Once the control opens,
it must be reset manually. Resetting of the temperature limiting
controls should be done by a qualified service technician.
CAUTION: The cause of the high temperature
condition must be investigated by a qualified service technician
and corrective action must be taken before placing the water
heater in service again.
To reset the temperature-limiting control:
1. Turn off the power to the water heater.
2. Remove the jacket access panel(s) and insulation.
The thermostat protective cover should not be removed.
3. Press the red RESET button.
4. Replace the insulation and jacket access panel(s) before
turning on
the power to the water heater.
Safety Controls
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.


5
About the control panel. 
Control Features
Display
Operating Modes
(See page 8 for description)
Vacation
(See page 8 for description)
Mode Selector
Use this button to alternate between available modes.
Arrow Pads
Use these buttons to adjust the temperature setting.
Enter Key
Filter Reset
The filter is dirty and requires cleaning when the Red light
is illuminated. Filter is located on top of the water heater.
Press button and hold for 5 seconds to reset filter alarm.

6
Turning on the water heater.
There is no power button for this unit. Once the water heater is
wired and power is supplied, it will be on. The display will show
the current water temperature setting. Current operating mode
for the water heater is illuminated.
To comply with safety regulations, the controls are factory
preset to 120°F (49°C) and Hybrid Mode. It is recommended
that the unit be set to Heat Pump (only) mode to maximize
energy savings. Operating in Hybrid mode provides a balance
of energy savings and hot water use convenience. Reported
energy consumption is based on operating the unit in Hybrid
mode at a temperature setting of 135°F (57°C), and operation
at lower temperature settings or in Heat Pump (only) mode will
provide even greater energy savings.

7
About the water temperature setting.
Temperature setpoint:
Safety, energy conservation and hot water capacity are factors
to be considered when selecting the water temperature setting
of the water heater. To comply with safety regulations, the water
temperature setpoint is factory set at 120°F (49°C). This is the
recommended starting temperature setting.
NOTE: According to US Dept of Energy, the average residential
water heater in the US is set at 135°F (57°C). Energy savings
claims are based on a 135°F (57°C) temperature setting. The
water temperature setpoint can be raised from the factory setting
of 120°F to 135°F (49°C to 57°C) without sacricing the claimed
energy savings. If a lower temperature setting than 135°F (57°C)
is used, greater savings in energy and operating costs may be
achieved.
See “To Adjust the Temperature” section to change the water
heater’s temperature.
Hot water capacity:
If more hot water capacity is desired, increasing the temperature
from 120°F to 135°F (49°C to 57°C) will enable the same tank of hot
water to last about 25% longer because more cold water is mixed
in at the shower or faucet.
Time/Temperature Relationship in Scalds
 
120°F (49°C) More than 5 minutes
125°F (52°C) 1-1/2 to 2 minutes
130°F (44°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 (66°C) About 1-1/2 seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
Risk of Scalding Reminder:
Water temperatures above 125°F (52°C) 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. This
label is located on the water heater near the upper element access
panel.
See “Time/Temperature Relationship in Scalds” below as a guide in
determining the proper water temperature for your home.
Mixing-valves:
Mixing valves for reducing point-of-use water temperature by
mixing hot and cold water in branch water lines are available.
Contact a licensed plumber or the local plumbing authority for
further information.
DANGER: There is a hot water scald potential if the
water temperature is set too high. Households with small children,
disabled, or elderly persons may require a 120°F (49°C) or lower
thermostat setting to prevent contact with HOT water.
To Adjust the Temperature
Follow these steps:
1. Press the UP or DOWN arrow on the control panel key pad
to desired temperature.
2. Press ENTER to accept the new setting.
Note: To change between °F and °C, press and hold MODE.
DANGER: There is a Hot Water scald Potential
if the water temperature is set too high. 120°F (49°C) is the
recommended starting point for water temperature setting,
but it can be adjusted to any temperature between 100°F and
140°F (38°C and 60°C).

8
This water heater defaults to the Hybrid operating mode.
Available modes are listed below and can be selected using
the MODE button.
Heat Pump (only) Mode—RECOMMENDED FOR MAXIMUM
SAVINGS
Heat Pump (only) is the most energy-ecient mode for this
water heater. It takes heat from the surrounding air to heat
the water. The time it takes to heat the water is longer in this
mode, so it may not be sucient if you have a high-demand
situation such as a large household or company.
Hybrid Mode
Hybrid mode combines the energy efficiency of Heat Pump
(only) with the recovery speed and power of the Electric (Only)
mode in most water usage situations. Hybrid mode will allow
the unit to perform like a standard electric water heater while
providing significant energy savings.
NOTE: Reported unit performance, energy consumption
and savings are based on Hybrid Mode operation at a
temperature setting of 135°F (57°C).
Electric (only) Mode
This mode uses only the upper and lower heating resistance
elements to heat the water, stopping the cool air discharge
during heat pump operation. The time it takes to heat the
water is less in this mode, but it is the LEAST energy-ecient
mode.
NOTE: In this mode the green LED light will ash after 48
hours as an indication that the unti is not operating in the
most energy ecient mode. The unit will continue to operate
in this mode and does not indicate an operating issue.
Vacation
This feature is used when you will be away from the home for
an extended period of time and hot water is not needed. In this
mode, the unit will drop the water temperature down to 50ºF
(10°C) and will use the most ecient heating mode to conserve
energy while the heater is sitting idle. The unit will automatically
resume heating one day before your return, so that hot water
will be available.
For example if you will be gone 14 days, follow these steps:
1. Select VACATION by using the Mode button
2. Input total days you will be gone (in this example, 14) by
pressing the UP arrow button (the default is 7 days)
3. Press ENTER.
The unit will drop the water temperature down to 50ºF (10°C)
for one day less than you will be gone (in this example, for
13 days). At the end of the day before you return (in this
example, the 13th day), it will automatically return to the
previous operating mode and heat the water to the original
temperature setting so hot water is available upon your
return.
To access any of these modes:
1. Press the MODE button on the control to the desired
operating mode.
2. The green light will be illuminated on the chosen mode.
Operational Modes. 

9
Frequently Asked Questions.
Filter:
Q: Why is there a lter?
A: In Hybrid and Heat Pump (only) the unit moves air through the
system. The lter protects the unit from dirt. A clean air lter improves
eciency.
Q: How to clean the lter?
A: Leave power on and remove lter from top of unit. Filter can be
vacuumed clean or rinsed with warm water. A dirty lter will reduce
water heater eciency!
Modes:
Q: What is Heat Pump (Only)?
A: Heat Pump (Only) is the most-ecient mode. It takes heat from
the air to heat water, thereby cooling the surrounding air. Slower
recovery but most-ecient mode.
Q: What is Hybrid?
A: The Hybrid mode combines benets of Heat Pump (Only) with the speed
and power of Standard Electric. This provides great performance with
less energy.
Q: What is Vacation mode?
A: If you are gone for an extended period, this mode lowers the water
temperature to reduce energy used. Unit will switch to the previous
mode one day before you get back.
Q: What is Electric (Only) ?
A: Electric (Only) mode uses only the resistance heaters to heat the water.
This gives faster hot water recovery than Hybrid mode, but uses more
energy. This mode operates without the fan, stopping the cool air
normally discharged during heat pump operation.
Q: Why does the Electric (Only) green LED ash?
A: In this mode the green LED light will ash after 48 hours as an
indication that the unit is not operating in the most energy ecient
mode.
Operation:
Q: Why can I hear the unit run?
A: In the most energy-ecient models, Heat Pump (Only) and Hybrid, the
method used to heat the water used a fan that can be heard while
running.
Q: The heat pump is not running its normal length of time. What causes
this?
A: Under some conditions, the Water Heater will operate using the
electric elements instead of the heat pump to protect your unit and
ensure hot water is available to you. These conditions include extreme
cold ambient temperature (<35°F), extreme hot ambient temperatures
(>120°F), or very low voltage conditions. The unit will return to normal
operation when conditions permit.
Q: Why does the water heater display a number other than the
temperature setpoint at startup or following a power loss?
A: During commissioning, a self-test countdown number will be displayed
indicating the time remaining before the unit begins normal operation.
Q: Why isn’t the temperature setting always displayed on the control?
A: The control will only display the temperature setting when a heat
source is called for by the system and will turn o when the heating
elements and heat pump are not running.

10
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 and the water heater drained to conserve energy and
prevent a build up of dangerous hydrogen gas. This unit has
no power button, power can only be shut off at the circuit
breaker or disconnect switch.
The water heater and piping should be drained if they might
be subjected to freezing temperatures.
After a long shutdown 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.
NOTE: Refer to the Hydrogen Gas Caution
in the Operating Instructions (see page 3).
Care and cleaning.
Draining the Water Heater
CAUTION: Risk of Shock - Shut off power to
the water heater before draining water.
DANGER: Risk of Scald - 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 hazard and
should be directed to a suitable drain to prevent injury or
damage.
To drain the water heater, follow these steps:
1. Attach a garden hose to the drain valve located at the
bottom of the unit and direct that hose to a drain.
2. Turn o the cold water supply.
3. Open the drain valve with a at screwdriver.
4. Admit air to the tank by opening a hot water faucet or
lifting the handle on the relief valve.
Extended Shutdown Periods or Vacations Exceeding Vacation Mode Options
DANGER: Risk of Scald - 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.
NOTE: If the temperature and pressure-relief valve on the
hot 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.
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.
Temperature and Pressure-Relief Valve:
At least once a year, lift and release the lever handle on the
temperature and pressure-relief valve, located
on the front-right 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.
Periodic Inspection (once a year):
It is further recommended that a periodic inspection of the
operating controls, heating elements and wiring should be made
by service personnel qualified in electric appliance repair.
Most electrical appliances, even when new, make some sound
when in operation. If the hissing or singing sound level increases
excessively, the electric heating element may require cleaning.
Contact a qualified installer or plumber for inspection.
Flushing Tank:
A water heater’s tank can act as a settling basin
for solids suspended in the water. It is therefore not uncommon
for hard water deposits to accumulate in the bottom of the tank.
To clean the tank of these deposits, follow these steps:
1. Attach a garden hose to the drain valve located at the bottom
of the unit and direct that hose to a drain.
2. Open the drain valve with a flat screwdriver.
3. Once a few quarts of water have been drained, close the drain
valve.
This should be done with the cold water supply open such that
water removed through drain valve is replaced, and water supply
flow helps to remove sediment.
Use a flat slot
screwdriver to
turn valve.
Routine Preventive Maintenance

11
Clearing the Condensation Drain Tube
Care and cleaning of the water heater.
Cleaning the Filter
In the Hybrid, Heat Pump (only) and High Demand/Boost modes,
the heater moves air through the system and out the back of the
unit. The filter is in place to protect the evaporator from dirt and
dust.
A clean air filter is important to get the highest efficiency.
Occasionally this filter will need to be cleaned (minimum once per
year). When the filter requires cleaning, the Red light above the
Filter button will be illuminated and an audible beep will sound.
NOTE: If the filter gets too dirty, the unit will automatically switch
to Electric (Fan off)/Standard (Fan off) mode and energy savings
will be lost.
Leave the power on. Remove the filter from
the top of the unit. Squeeze two tabs and lift to remove the air
filter. Once it has been removed, the filter can be vacuumed or
wiped clean with a damp cloth or rinsed with warm water.
Once the filter has been cleaned and dried, it can be replaced by
aligning it into the slots in the top of the unit and pushing it down
into place.
After the clean filter has been reinstalled, press and hold the
FILTER button. If a heating cycle is on when the filter fault is
reset, it will continue in electric mode to finish the cycle. After
that, it will automatically revert to the mode it was in prior to
being switched.
IMPORTANT: Filter must be cleaned when the alarm is displayed.
A dirty filter will make the system work harder and result in a
reduction of efficiency and possible damage to the system. In
order to get the best energy efficiency available, make sure your
filter is clean.
The main drain is intended to carry all condensate away. If it is
clogged, the heat pump will stop operating, the display will show
F20, and an alarm will sound. Press any button to silence the
alarm, then clear the condensate drain by removing any drain
lines and connections, and clearing debris. Reattach drain lines
and connections, then allow the water heater to run.
Periodically inspect the drain lines and clear any debris that may
have collected in the lines.
See Installation Instructions for more information.
Fitting
Direct the main
drain tube into
a drain
Anode Rod
The anode rod should be removed from the water heater’s tank
and inspected after a maximum of 3 years service, then annually
thereafter, and replaced when more than 6” (15.2 cm) of core
wire is exposed at either end of the rod.
NOTE: Artificially softened water requires that the anode rod be
inspected annually.
Due to shock hazard and to prevent accidental water leaks, this
inspection should be done by a qualified servicer or plumber, and
requires that the electric power and cold water supply be turned
off before servicing the anode rod.
NOTICE: Do not remove the anode rod from the water heater’s
tank except for inspection and/or replacement, as operation with
the anode rod removed will shorten the life of the glass-lined tank
and will void warranty coverage.
The anode rod consumption and replacement are not covered by
warranty.
Filter
Slots
Tabs
Overow
Exterior Surfaces
Hand wash with warm water only.
Main Drain Line

12
Anode Rod Maintenance and Service.

• T20 Torx Screwdriver
• Slot Screwdriver
• Tape
• Socket Wrench
• Socket Extention 12” long
• 1 1/16” Socket
• Softset Sealant
• Anode Rod, if needed
* See page 72 for part ordering instructions

1. Disconnect power, shut off the water supply, and partially
drain one or two gallons from the water heater through the
lower drain valve.
2. Remove the filter, trim ring, and front top cover as show in

3. Reinstall the trim ring, place a protective layer of tape on sheet
metal edges, and remove the anode rod insulation as show in
.
4. Using a slot screwdriver and ensuring to avoid damage to
exposed wires, remove foam to uncover the anode rod as
shown in Illustration C.
5. Using a 1 1/16” socket and extension, unscrew the anode rod,
then lift out to inspect as show in Illustration D.
6. To install the anode rod, seal the threads with soft set sealant,
thread into the port and using the torque wrench tighten to
50 ± 5 ft-lbs of torque. Plug in the wire for the anode rod if
present. Reinstall the anode rod insulation.
7. Turn water supply on, open a tap to remove any air in
plumbing system, inspect for leaks, then reassemble the unit
in reverse order as shown in Illustration A, and turn the power
on.
CAUTION - IMPORTANT SAFETY NOTICE
This information is intended to use by individuals possessing
adequate background of electrical, electronic and mechanical
experience. Any attempt to repair a major appliance
may result in personal injury and property damage. The
manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any
liability in connection with its use.
TITLE
Filter
Trim Ring
Front
Top Cover
Trim Ring
Tape Process
Tube Pinch O
Anode Rod
Insulation
Tape Corner
and Edges
Wires
Wires
Anode Rod
Anode Rod

13
The location chosen for the water heater must take into
consideration the following: 



The water heater temperature setting strongly impacts the
amount of usable hot water available for showers and baths.
• Energy consumption/savings and eciency testing of water
heaters is performed at a 135ºF (57ºC) setting, the average
water heater setting according to the Department of Energy.
All savings are based on hybrid mode operation at 135ºF
(57ºC).
• Safety regulations require a factory setting of 120°F to 125°F
(49°C to 52°C) max for all new water heaters. Therefore, if
your water heater is currently set at 130°F (54°C) or above
and your new water heater is installed with a factory set
setpoint of 120°F (49°C), the new water heater may seem to
provide lower capacity than your existing water heater.
• The user can adjust the temperature setting to meet their
needs. Always read and understand the safety instructions
contained in the users manual before adjusting the
temperature setpoint.

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 Prevention Association,
Batterymarch park, Quincy, MA 02169 as booklet ANSI/
NFPA 70.

Check the markings on the rating plate of the water
heater to be certain the power supply corresponds
to the water heater requirements.  208V
installations may experience lower performance.

Locate the water heater in a clean dry area as near as
practical to the area of greatest heated water demand.
Long uninsulated hot water lines can waste energy and
water. Unit must be installed in a level location.
 This unit is designed for any common indoor
installation including: garage, utility room, attic, closet,
etc. It can be installed in rooms smaller than 10’ x 10’ x
7’ (700cu.ft.) with the installation of a louvered door or
ducting kit. Louvers should be 240 square inches (0.15
m2) of open airflow area or greater. If two louvers are
used one should be near the top of the door.
Place the water heater in such a manner that the air
filter, cover, trim ring and front panels can be removed
to permit inspection and servicing, such as removal
of elements or cleaning of the filter. The water heater
should be installed keeping service in mind. Moving the
water heater or other appliances to provide service to
the water heater is not covered under warranty.
The water heater and water lines should be protected
from freezing temperatures and high-corrosive
atmospheres. Do not install the water heater in outdoor,
unprotected areas.
Risk of Property Damage
- 







 The heat pump operating range is 45°F to 120°F
(7°C to 49°C). If the ambient temperature is outside of
this range, the heat pump will turn off and the electric
elements will be used until the ambient temperature
returns to within the operating range.


14



It may have been installed in the cold water line as
a separate backflow 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 “.”
A cold water inlet line with no check valve or backflow
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 “.” 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 “,” however, prevents the
expanding water from flowing back into the main
supply line, and the result of “” 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  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 page 15). 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.


There must be a 7” (17.5 cm) clearance between any object
and the rear and sides of the water heater in the event service
is needed. A minimum 8“ (20.3cm) clearance above the
water heater to remove the lter for cleaning and for service
access, and clear access to the front of the water heater, is
recommended. Installations that require 6” clearance on the
sides or rear of the water heater for earthquake straps are
also acceptable. 

The hot and cold water plumbing and electrical
connections must not interfere with the removal of the lter.
If a separate ducting kit is purchased, additional space
is required above and to the rear of the water heater for
installation. Consult the ducting kit manual for specic
instructions.
8”
(20.3cm)
(If required)
 Auxiliary catch pan MUST conform to local codes.
Catch Pan Kits are available from the store where the water
heater was purchased, a builder store or any water heater
distributor. The catch pan should be 2” (5.1 cm) minimum larger
than the Water Heater base diameter. To prevent corrosion
and improve Drain Valve access it is recommended that the
water heater be placed on spacers inside the catch pan.
Relief Valve Drain
Condensate Drain
Catch Pan
Catch Pan
Drain

1 - Flexible or Rigid Drain Line (3/4”) and
associated ttings
or
3/4” MNPT
Condensate Drain Port


This unit has a condensate drain; therefore a floor or other
drain no higher than 36” (91.4cm) above the floor must be
available in close proximity to the water heater. Drain must
meet state and local codes. It is important to install a fitting
suitable for rigid or flexible drain line to the primary drain port
coming off the side of the unit. Ensure that the rigid or flexible
drain line maintains a downward slope to allow for proper
gravity drainage of condensate to the drain. If no drain is
available, then a common condensate pump with a capacity
no less than 1 gallon (3.8L)/day must be purchased and
installed. The rigid or flexible drain line should be routed so
that the discharge water cannot contact live electrical parts or
cause water damage.

15
Fitting
Condensate
Drain Overow
Drain
Line
Fitting
Condensate
Drain Overow
Drain
Line
(Typical Installations)

Refer to the illustration below for suggested typical installation.
The HOT and COLD water connections are clearly marked
and are ¾” NPT on all models. When connecting to the
inlet/outlet ports, the use of ¾”female NPT tapered thread
fittings with use of thread sealant is recommended. The
installation of unions is recommended on the hot and cold
water connections so that the water heater may be easily
disconnected for servicing if necessary.
: Install a shut-off valve in the cold water line near the
water heater. This will enable easier service or maintenance
of the unit later.







To cold
water supply
Hot water
outlet to
xtures
Shut-off valve
Union
Thermal expansion tank
Relief Valve discharge
6” (15.2 cm) minimum
from the oor
Temperature & Pressure
Relief Valve
3/4” FNPT tting to
Condensate Drain Pan
Condensate Drain Tube
To Electrical Junction Box
(use only copper conductors)

16


Risk of Unit Damage - 




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.
F11” fault code during installation: If the unit is
powered on without a full tank, the error code “F11” will
show in the display. Turn o the power, ll the tank with
water (see above), then turn the power back on.
Note: the DRY TANK DETECTION feature on tank is for the
aid of installer and should NOT be used as the primary
control to prevent operation with an empty or partially
lled tank. Power should NEVER be applied to the water
heater until installer has veried tank is lled and all air
has been purged from system.

Do not mis-wire electrical connections. 240V AC or 208AC
must be applied across L1 and L2 wires as shown in
‘Water heater junction box’ illustration. Failure to do so
will VOID the warranty, and can result in 120V applied to
water heater, which may damage the compressor or other
electrical components.
If 4-conductor wire is supplied to the water heater, cap the
neutral, and connect the remaining wires as illustrated.
NOTE REGARDING UTILITY POWER-MANAGEMENT DEVICES
(Sometimes called Peak Load Reduction Switches):
Some power-management switching devices or even some
basic timer switches exist that REDUCE voltage from 240V
to 120V during high-electricity-demand periods. These
devices must be removed from the circuit providing power
to the water heater because of the potential unit damage
noted above.
However, switching devices which cut power from 240V to
0V on a periodic basis are acceptable.
“bAd linE” fault code during installation: If “bAd linE” is
shown on the display, the unit is not receiving the correct
voltage as a result of incorrect wiring. To correct this fault,
turn the power o to the unit, correct the wiring issue, then
turn the power back on.

Risk of Unit Damage - 


.
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, is supplied and must remain installed
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. Local codes shall
govern the installation of relief valves.
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.

To reduce the risk of excessive pressures and
temperatures in this water heater, install temperature
and pressure protective equipment required by local
codes and no less than a combination temperature and
pressure relief valve certified by a nationally recognized
testing laboratory that maintains periodic inspection of
production of listed equipment or materials, as meeting
the requirements for Relief Valves and Automatic Gas
Shutoff Devices for Hot Water Supply Systems, ANSI
Z21.22. This valve must be marked with a maximum set
pressure not to exceed the marked maximum working
pressure of the water heater. Install the valve into an
opening provided and marked for this purpose in the
water heater, and orient it or provide tubing so that
any discharge from the valve exits only within 6 inches
above, or at any distance below, the structural floor, and
does not contact any live electrical part. The discharge
opening must not be blocked or reduced in size under
any circumstances.

17

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 at the
top of the water heater. An opening for 1/2” electrical fitting is
provided for field wiring connections.
The voltage requirements and wattage load for the water
heater are specified on the rating label on the front of the
water heater.

1. Metallic conduit or metallic sheathed cable approved
for use as a grounding conductor and installed with
fittings approved for the purpose.
2. Nonmetallic 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.
To connect power to the water heater:
1. Turn the power o.
2. Remove the screw/screws holding the junction box
top cover.
3. Install L1 to L1, L2 to L2 and ground to the green
ground wire connected to the bottom of the junction
box.
NOTE: Install electric connections according to local
codes or latest edition of National Electrical Code ANSI/
NFPA 70.






240V
Junction box cover
Junction box
Factory Ground
House Ground (Green)
L2 (Red)
L1 (Black)

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.
If local codes require external application of insulation blanket
kits, the manufacturer’s instructions included with the kit must
be carefully followed.



• Do not cover the temperature and pressure-relief valve.
• Do not cover access panels to the heating elements.
• Do not cover the electrical junction box 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
the insulation blanket.
• Do not block the air inlet/outlets in the top covers or rear of
the unit.




  
  
      
3,000 20 20 15 15
4,000 25 25 20 15
     
5,000 30 30 25 15
5,500 35 30 25 15
6,000 40 35 30 20
8,000 50 45 40 25
9,000 – 50 45 25
10,000 – – 50 30
11,000 – – 50 30
12,000 – – – 35
  
  
      
3,000 12 12 14 14
4,000 10 10 12 14
     
5,000 10 10 10 14
5,500 8 10 10 14
6,000 8 8 10 12
8,000 8 8 8 10
9,000 – 8 8 10
10,000 – – 8 10
11,000 – – 8 10
12,000 – – – 8

18

. 
– Does room size require louvered door or similar ventilation? 10’ x 10’ x 7’ (700 cu. ft.) or 240 square inches (0.15 m2)
open air-flow area needed.
– Back of unit  by 7 inches (17.5 cm), and sides have at least 7 inches (17.5 cm) clearance. (6 inches
(15.2 cm) clearance for earthquake strap installations, with additioanl clearance on the opposite side of the unit.)
– of unit is free and clear.
– Is the water heater ? If no, add shims under the base of the unit.
Verify is installed. (Located in packaging).

– Does not prevent  removal.
– No leaks after the tank with water, either when water is flowing or not.

– Main Drain flexible tubing installed.
.  is working and drain line completed per local code.
.  verify 208/240 VAC to L1 and L2 at tank.
 connection does not prevent air filter removal.
 Verify  displays 120°F (49°C) Hybrid mode. Assist user in how to adjust temperature and modes (see
“About the Water Temperature Setting” section on page 7).

After the unit has been installed, with all electrical and water connections secure and checked, then the unit should be
filled with water (vent tank by opening a hot water faucet somewhere in home to allow tank to fully fill with water). Once
tank is full and power is energized, you may experience the following:
  
0 to 2 minutes Unit will go through self-check and
display countdown
This 2-minute off-time prevents compressor
damage.
2 to 22 minutes Compressor and fan turn on This 20-minute period is used to ensure the tank
is full of water (Dry-fire prevention algorithm).
22 minutes and
beyond
Compressor and fan turn off,
heating elements turn on. After
initial heat-up, elements turn off
and compressor turns on.
The water heater is operating in Hybrid mode.
Quickly provides initial amount of hot water, then
switches to efficient heat pump for majority of
heating.
NOTE: The heat pump operating range is 35°F to 120°F (2°C to 49°C). If the ambient temperature is outside of this range,
the heat pump will turn off and the electric elements will be used until the ambient temperature returns to within the
operating range.
During commissioning, a self-test countdown number will be displayed indicating the time remaining before the unit
begins normal operation.


19
Troubleshooting…
Before you call for service....
Save time and money! Review the chart below first and you
may not need to call for service.
   
Water heater makes  • Some amount of fan sound is normal. If you hear an
sounds  abnormal sound or the sound level seems unusually loud,
then contact service.
Water heater is  • If the room is smaller than 10’ x 10’ x 7’ (3m x 3m x 2.1m),
making the room  then it must have a louvered door or other means to allow
cooler air exchange with surrounding rooms.
 • This is normal

Water dripping down  • Clear out any debris in the drain port on the unit.
the outside of the 
heater.
 • Tighten the inlet and outlet pipe connections.

Not enough or no hot  •See About the Water Temperature Setting section.
water .
  Change to different mode
          
 
  • Wait for the water heater to recover after an abnormal
 demand
.
  For the water heater to work properly, its location needs
  to have a temperature of 32° to 150°F for Standard
Electric mode and 45° to 120°F for all other modes.
 • This is normal. The colder inlet water takes longer to heat.


 • Make sure all faucets are closed.

   Insulate piping.
          
 
  Make sure unit is 7” away from the wall.
          
 
  If room size is less than 10’ x 10’ x 7’ (700 cu. ft.), install
   louvered door or similar ventilation.
 • Replace fuse or reset circuit breaker.

 • Contact the local electric utility.

 • See the Installation Instructions section.
 • See the Safety Control section, see page 4.
 Correct piping connections.

 • Make sure electric supply to water heater is correct
disconnect switch, if used, are in the ON position.

20
   
Water is too hot  •See About the Water Temperature Setting section.

For your safety, DO NOT attempt repair of electrical wiring, controls,
heating elements or other safety devices. Refer repairs to qualified service personnel.
 • Call for service.
Rumbling noise  • Remove and clean the heating elements. This should only
  be done by a qulified service personnel.
         
 
Relief valve producing  • This is an unacceptable condition and must be corrected.
popping sound  See Thermal Expansion Information on page 14.
or draining  Do not plug the relief valve outlet.
Contact a plumbing contractor to correct this.
The heater is beeping  • Fill the tank completely with water. Apply power to unit
and the display says  after the tank has been filled. Press ENTER to stop the
F11  alarm.
 • If the unit has been confirmed to be filled with water, and
   an F11 code is experienced , it is possible that the code
   may be a false indicator due to certain unique environment
  conditions encountered during the start up. If the unit is
  f ull of water, turn the breaker off for about 10 minutes to allow
 the water temperature to stabilize, then turn the breaker
  back on. If the F11 code persists, schedule service.
The filter light is on.  • Follow the instructions on how to remove and clean the
 filter on page 11.
 • Repeated dirty lter alarms that do not resolve by cleaning the
lter may be an indication of a fan failure. Contact service.
The heater is beeping  • The unit will automatically switch to another available
and the screen says  mode to ensure you continue to have hot water. Contact
“FA-F8” service immediately and give them the codes listed on the
display screen.
The heater is beeping  • The heater may switch to another available heating mode.
and the screen flashes   Contact service immediately. To stop the beeping noise
an error code   (unless error code F2, F11 or bAd linE) press either the UP or
down arrow button and the alarm will stop and the display
will go back to normal (set temperature).
The water heater is   Turn off power to water heater (generally at the breaker  
beeping and the screen   panel). Then read “Electrical Connections” section of 
flashes, “bAd linE” Installation Instructions, see page 16. Then, contact the
installer to verify electrical input to the water heater.
Hot Water has a rotten  • The odor can be reduced or eliminated in most water
egg or sulfur smell  heaters by replacing the anode rod with less-active
 material rod. In some cases, an added step of
 chlorinating the water heater and all hot water lines may
 be necessary, contact your local water professional or
 plumber for options and instructions. A qualified servicer or
plumber should do this replacement.
Water heater displays  • This is normal. Wait for the water heater to complete the self
a number other than the  test and begin normal operation.
temperature setpoint 
at startup or following 
a power loss. 
Unit is not making  • Check mode of unit.
normal sounds 
          

Troubleshooting…