HPWH HEAT PUMP WATER HEATER
60 HZ - Model HPWH500AAOC
50 HZ - Model HPWH500BAOC
ECR International
P .O. Box 4729, 2201 Dwyer Avenue
Utica, New Y ouk 1354-4729
Phone: 1-800-228-9364
Fax: 1-800-232-9364
info@ecrinternational.com
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
An ISO 9001-2000 Certified Company
P/N# 240-3554, Rev. 2.1 [07/04]
HPWH HEAT PUMP WATER HEATER
INSTALLATION, OPERATION & MAINTENANCE MANUAL
P/N# 240-3554, Rev . 2.1 [07/04]
Shipping Damage MUST be Reported to the Carrier IMMEDIATELY!!!
Examine the exterior. Remove cover and examine compressor and piping for signs of damage.
This manual is intended as an aid to qualified service
personnel for proper installation, operation, and maintenance of the Watter$aver Heat Pump Water Heater.
In the Commonwealth of Massachusetts, this unit must
be installed by a licensed plumber and licensed electrician.
Read this manual carefully before attempting to install or operate the Watter$aver Heat Pump Water
Heater. Failure to follow these instructions or use this
water heater for its intended purpose may result in
fire, electrical shock, scald injury , explosion, property
damage, personal injury, or death.
TO THE INST ALLER
1. Affix these instructions on or adjacent to the water heater .
2. Before leaving the premises, review this manual to be
sure the heater has been installed correctly . St art and operate the unit for one complete cycle and make sure the water
temperature is acceptable to the consumer .
SAFETY INSTRUCTIONS
Do not use the Watter$aver Heat Pump Water Heater
if it has been dropped or damaged in any way .
The Watter$aver must not be installed in any area
where flammable liquids or vapors may be present.
Do not store or use gasoline or other combustible
materials or liquids near or adjacent to this water
heater.
Do not use the Watter$aver in conjunction with a
spa or hot tub.
Check the rating plate on the Watter$aver before
installation to make certain the voltage shown is the
same as the electric supply to the water heater.
The Watter$aver must be connected only to a prop-
erly grounded electrical supply . Do not fail to properly ground this water heater.
TO THE OWNER
Retain this manual and the attached warranty for future reference. Retain the original receipt as proof of purchase.
TECHNICAL SERVICE / W ARRANTY ASSIST ANCE
For technical service or warranty information on your
Watter$aver Heat Pump W ater Heater, see the attached
warranty and have the following information ready when
calling:
Model Number __________________________
Serial Number __________________________
Installation Date ________________________
For questions regarding information in this installation manual, contact your contractor or distributor .
The Watter$aver should only be serviced by qualified
service personnel.
Turn off the electrical supply before servicing the
Watter$aver.
IMPORT ANT NOTE
The Watter$aver Heat Pump Water Heater should
never be stored or installed on its side. Upright
transportation is recommended. If it becomes
necessary to transport the water heater on its
side, the manufacturer recommends that the unit
be in the upright position for a minimum of two
hours prior to operation. Failure to follow these
instructions may result in damage to the
Watter$aver and will void the warranty.
Watter$aver Heat Pump Water Heater
2
Made In Rome, NY , USA
TABLE OF CONTENTS
CONSUMER INFORMATION
Installer and Owner Notes ........................... 1
Safety Instructions ....................................... 1
Consumer Information ................................. 2
Consumer Responsibilities .......................... 2
Tampering and Modification ........................ 3
Site Location ................................................ 3
General Installation ....................................... 4
Piping Installation ........................................ 6
Electrical Connections ................................. 7
Installation Checklist .................................... 8
St art-Up And Operation ............................... 9
Water Heater Operation .............................. 9
Operational Conditions ................................ 10
Water Heater Maintenance .......................... 10
Troubleshooting Guide ................................ 11
Heating Element Replacement .................... 13
Specifications and Performance.................. 14
Common Replacement Parts ...................... 15
DANGER
!
Water temperature over 125° F (51.7° C) can cause
severe burns or death from scalding.
Feel the water before bathing or showering.
!
This water heater should be installed in accordance with
the local code authority having jurisdiction; the power
company or electric utility; and this installation manual.
In the absence of local code requirements, follow the
regulations set forth in the latest edition of The National
Electrical Code, NFPA 70. This is available from the
following:
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
American National Standards Institute
1430 Broadway
New York, NY 10018
Check your phone listings for the Local Authorities having
jurisdiction over your installation.
CONSUMER RESPONSIBILITIES
This manual has been prepared to acquaint you with the
installation, operation and maintenance of your Watter$aver
Heat Pump Water Heater and to provide important safety
information in these areas.
Children, disabled, and elderly are at highest risk of
being scalded.
See the instruction manual before setting the water
temperature on the Watter$aver Heat Pump Water
Heater. Temperature limiting valves are available for use
and may be purchased at most plumbing supply stores.
We urge you to read all of the instructions thoroughly
before attempting the installation or operation of this water
heater. This manual should be kept for future reference.
The manufacturer of this water heater will not be liable
for any damages caused by failure to comply with the
installation and operating instructions outlined in this
manual.
If you lack the necessary skills required to properly install
this water heater or you have difficulty following the
directions, you should not proceed, but have a qualified
person perform the installation of this water heater.
A rating plate identifying your water heater can be found
on the front of the jacket. When referring to your water
heater, always have the information listed on the rating
plate readily available.
Retain your original receipt as proof of purchase.
ECR International
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T AMPERING AND MODIFICA TION
DANGER
!
T ampering with the thermostat, heater elements, electrical connections, or temperature and pressure relief valve is dangerous and may result in serious injury or death. Tampering voids all warranties. Only
properly trained, qualified service personnel should
service these components. Do not attempt to modify
or change this water heater in any way.
INSULATION BLANKET
Some governing bodies may require the use of external
insulation blankets when water heaters are installed in
newly constructed homes and additions. If an insulation
blanket is applied to the Watter$aver Heat Pump Water
Heater, CAUTION must be exercised so as to not restrict
its proper function and operation. Please note the following:
• Do not cover the temperature and pressure relief
valve or any labels or instruction materials applied to
the water heater. These labels must remain visible
for reference by the user. Do not remove these labels
as they are a permanent part of the water heater as
required by the certification agencies and/or the
Federal Government.
!
The Watter$aver should be located in an area not subject
to physical damage by moving vehicles or area flooding.
(Figure 1.)
Figure 1 Residential Garage Installation
Vehicle Stop
Drain Pan
Water heaters located in unconditioned spaces (attics, basements, etc.) may require the water piping and drain piping
to be insulated to protect against freezing. The drain and
controls must be easily accessible for operation and service.
The Watter$aver Heat Pump Water Heater should be located in an area where leakage of the tank or connections
will not result in damage to the area adjacent to the water
heater or to lower floors of the structure.
Drain
• Do not cover any doors on the water heater or
access panels leading to element compartments.
• Do not cover any opening on the shroud that will
obstruct air flow inlet or outlet to the water heater.
EARTHQUAKE NOTICE
WARNING
!
This water heater must be braced, anchored, or
strapped to avoid falling or moving during an earthquake. Contact local utilities for code requirements
in your area or call the toll free number on the front of
this manual for instructions.
SITE LOCATION
Select a location near the center of the water piping
system. It must be installed indoors and in a vertical
position on a level surface.
WARNING
!
Do not install outdoors!! This water heater is
certified for indoor installation only. Failure to follow
these instructions could result in fire, property
damage, personal injury or death.
!
!
IMPORT ANT: Local codes and requirement s in your
area may require the installation of your water heater
be accomplished in a way that the bottom of the unit
is elevated at least 6 inches (15 cm) from the floor.
WARNING
!
Areas where flammable liquids (gasoline, solvents,
liquid propane, butane, etc.) or other substances
which emit flammable vapors are stored are not suitable for water heater installation. Natural air movements can carry flammable vapors some distance
from where they are stored or used. The water heater
thermostat contacts can arc and ignite these vapors
causing property damage, serious burns or death.
Never store or use flammable substances in the same
room or area containing an electric water heater.
Gasoline or other flammable substances must never
be used in the same room or area containing a water
heater or other spark producing devices.
It is recommended that a suitable drain pan be installed
under the water heater to protect the property from damage
which may occur from normal condensate formation on
the tank or leaks in the tank and pipe connections. The
pan must limit the water level to a maximum depth of 2½
inches (6.3 cm) and be 2 inches (5.1 cm) wider than the
heater and piped to an adequate drain. Locate the water
!
Watter$aver Heat Pump Water Heater
4
Made In Rome, NY , USA
heater near a suitable inside drain. Outside drains are subject
to freezing temperatures which can obstruct the drain line.
The piping should be at least ¾” I.D. and pitched for proper
drainage. (Figure 2.)
Figure 2 T&P Relief Valve and Condensate
Drain Line Installation
Hot Water Shutoff Valve
1
Hot Water Outlet
Thermal Trap
Vacuum Relief Valve
Cold Water Shutoff Valve
Thermal Trap
Union
Cold Water
Inlet From
Water Supply
Condensate
Vent
(Recommended for
proper condensate
drainage)
GENERAL INST ALLA TION
WARNING
!
!
Failure to follow the instructions in this installation, operation, and maintenance manual will release the manufacturer from any liability for any water damage in connection with this water heater.
Prior t o instal l at i on, be sure t o have the following tools
and mat erial s availabl e:
• A dj ustable Wrench • Propane Torch
• Condensate Drain Tube - 3/8" I.D. • Solder - 95/ 5
• Condensate Drain Tube - ½" I. D. • Soldering Flux
• Nut Driver - ¼" • S and Cl oth
• Phillips Screwdriver • Tape Measure
• P i pe a nd P l um bi ng F i ttings • Wire Nuts
• P i pe Cut ter • Wire Stripper/Cutter
• P i pe Thread Tape
T&P Valve
Secondary
Condensate
Drain 3/8” I.D.
( Must be piped
separately and
routed to an
adequate drain)
2
Drain Valve
1” (2.5 cm) Min.
Drain Pan
(2½” (6.3 cm) Max. depth)
1
In the Commonwealth of Massachusetts, the hot water
outlet temperature must not exceed 130° F
2
Brass drain valves must be used for installation in the
Commonwealth of Massachusetts
NOTE: Condensate vent must be even with top of tank for proper operation.
This illustration meets the code requirements
of the Commonwealth of Massachusetts.
Primary
Condensate
Drain 1/2” I.D.
( Must be piped
separately and
routed to an
adequate drain)
Discharge Line
( 6” (15 cm) Max.
above drain.
12” for the
Commonwealth of
Massachusetts)
Drain Line
(3/4” Min. I.D.)
Drain
All condensate drain lines and T&P valve drains must be
piped separately and routed to an adequate drain. To protect
the Watter$aver’s outer finish, do not pipe drain lines into
the drain pan.
1. Select the proper installation site for the Watter$aver and
unpack it in the location where it will be installed.
IMPORTANT: The Watter$aver must not be inst alled
outdoors, in a corrosive environment, or in an area where
leakage of the tank or plumbing connections will
damage adjacent areas or lower floors of the structure.
For best results, make certain the unit is placed on a
level surface.
2. Use a ¼” nut driver to loosen the screws around the base
of the shroud and remove it from the water heater. it is not
necessary to remove the screws as the holes in the base of
the shroud are slotted.
3. Remove the screws from the shroud and separate the
halves.
4. Install plumbing to the tank in accordance with local
plumbing codes. Ensure plumbing connections will allow
the installation and removal of the shroud after all plumbing
is complete (See “Water System Piping.”)
5. Install primary and secondary condensate drain lines to
the evaporator pan and route to an adequate drain. If a drain
is not accessible, the installer can use a condensate pump
(sold separately) or install ECR’s Watter$aver Condensate
Management System. Contact the factory for more information.
ECR International
CAUTION
!
!
Do not apply power to an empty or partially filled water
heater. This can result in serious damage to the ta nk
and destroy the heating elements and will void the warranty.
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6. Ensure the toggle switch on the control board (See “Replacement Parts List” on page 16 for location.) is in the “HP”
position. In the “ELEC” position, the heat pump system is
disabled and the unit will operate as an electric resistance
water heater ONLY.
7. Connect wires L1, L2, and Ground to the electric box
located in front of the evaporator coil on top of the tank.
8. Replace the shroud and ensure wires L1, L2, and Ground
pass through the opening in the top of the shroud.
WA TER SYSTEM PIPING
Water piping, fittings, and valves must be properly installed
in accordance with local plumbing codes for the correct and
safe operation of the Watter$aver Heat Pump W ater Heater.
Please note the following:
• DO NOT install the water heater with piping that is
unsuitable for drinking water (iron piping, PVC piping,
or piping that has been treated with chromates, boiler
seal, or other chemicals). Use only new piping such
as copper, CPVC, or polybutylene.
• DO NOT add any chemicals to the piping which
could contaminate the water supply.
TEMPERATURE AND PRESSURE RELIEF V ALVE
(T&P V AL VE)
WARNING
!
Do not attempt to operate the Watter$aver without a
properly installed temperature and pressure relief valve.
Operating the Watter$aver without a T&P valve will void
the warranty and can result in property damage, personal injury , or death.
For protection against excessive pressure and temperatures,
a temperature and pressure relief valve must be installed in
the opening marked “T&P V alve” and connected to a proper
discharge line which terminates at an adequate drain. (Figure
2.) A T&P valve is furnished with the water heater .
This valve must be design certified by a nationally recognized
testing laboratory as meeting the requirements for relief valves
and automatic shut-off devices for hot water supply systems.
The function of the T&P valve is to discharge water in large
quantities in the event of an excessive temperature or
pressure build up in the water heater. The valve must not
be in contact with any electrical part or exceed the
working pressure of the water heater as stated on the
rating plate.
!
• DO NOT use any type of pump, valve, or fitting that is
unsuitable for potable water .
• DO NOT install check valves in the cold water supply to the unit.
• DO NOT use valves that excessively restrict water
flow. Use only full flow or gate valves.
• DO NOT use any lead-based solder in potable water
lines. Use 95/5 tin-antimony or another suitable nonlead solder.
• DO NOT tamper with any components of the water
heater. Tampering is dangerous and can result in property damage, severe injury , or death. Tampering with
the unit voids all warranties so only a qualified technician should service the unit.
CAUTION
!
Never operate an empty or partially filled water heater.
This can result in serious damage to the tank and
destroy the heating elements.
!
will
WARNING
!
Do not use an old or existing T&P valve with your
Watter$aver™ Heat Pump Water Heater as it may be
damaged or inadequate for the pressure of the unit.
Manually operate the T&P valve at least once a year to make
sure it works properly. Because discharged water can be
hot, stand clear of the outlet and slowly lift the manual relief
T emperature and
Pressure Relief Valve
Manual Relief Lever
Discharge Line to Drain
Discharging water will be hot and can cause scald injuries or property damage. Discharge lines must be
properly installed and piped to an adequate drain.
lever on the valve. Then allow the
water to flow for 5-10 seconds and
let the valve “snap” closed. If, after several attempts, the valve
fails to close and continues to release water, immediately shut of f
electrical power and the cold water inlet valve and call a qualified
technician.
DANGER
!
!
!
Watter$aver Heat Pump Water Heater
6
Made In Rome, NY , USA
DISCHARGE DRAIN LINES
• Must not be smaller than the pipe size of the relief
valve or drain stubs.
• Must not be capped, blocked, plugged or contain any
valve that obstructs flow to the drain.
supply system. The water utility supply meter may contain
a check valve, backflow preventer, or water pressure reducing
valve. This will create a closed water system. During the
heating cycle of the water heater, water expands, causing
pressure inside the tank to increase. Under these conditions,
the T&P valve may discharge hot water , resulting in a loss of
energy and a build-up of lime on the relief valve seat. To
prevent this, use one of the following two methods:
• Must terminate a maximum of 6 inches (15 cm) above
a floor drain or external to the building provided the
external drainage is below the level of the Watter$aver.
• Must be capable of withstanding 250° F (121.1° C)
without distortion.
• Must be installed to allow complete drainage of the
T&P valve and discharge line.
CLOSED SYSTEM/THERMAL EXP ANSION
Periodic discharge of the temperature and pressure relief
valve may be due to thermal expansion in a closed water
PIPING INST ALLA TION
Piping, fittings, and valves should be installed
Figure 3 Recommended Water Piping
according to the installation drawing shown in
Figure 3. If the indoor installation area is subject to freezing temperatures, the water piping
must be protected by insulation.
Water supply pressure should not exceed 80%
Hot Water
Outlet
of the unit’s working pressure (150 PSIG) as
stated on the rating plate and in the specification section of this manual. If this occurs, a
pressure reducing valve with a by-pass may
need to be installed in the cold water supply
line. This should be placed on the supply to
the entire house in order to maintain equal hot
Thermal Trap
and cold water pressures.
CAUTION
! !
1. Install a diaphragm-type expansion tank that is
suitable for potable (drinking) water on the cold water
supply line. The expansion tank must have a minimum
capacity of 1.5 U.S. gallons (5.7 liters) per 50 gallons
(189.3 liters) of stored water.
2. Install a 125 PSI (861.8 kPa) pressure relief valve in
the cold water supply line. Make sure the discharge
of this valve is directed to an open drain and
protected from freezing.
IMPORTANT: Contact a local water supplier or
plumbing inspector for information on how to control
this situation. Do not plug the T&P valve.
In a closed system use either a thermal expansion tank
or pressure relief valve.
Hot Water
Shutoff Valve
Thermal Expansion Tank
Vacuum Relief
Valve
Pressure Relief Valve
T o Additional
Cold Water
Taps
Cold Water Inlet Valve
Thermal Trap
Cold Water Inlet From
Pressure
Reducing
Valve
With
Bypass
Water Supply
Heat cannot be applied to the hot and
cold water connections as they may contain non-metallic parts. If solder connections are used, solder the pipe to the
threaded adapter before attaching the
adapter to the hot and cold water connections.
IMPORTANT: Always use a good grade
of joint compound and be certain that all
fittings are drawn up tight.
ECR International
NOTE: Refer to local plumb-
ing codes for correct and
safe operation of the
Watter$aver Heat Pump
Water Heater.
This illustration does not
meet the code requirements
of the
Commonwealth of
Massachusetts.
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1. Install the water piping and fittings as shown in Figure 3
by connecting the cold water supply to the fitting marked
“C” and the hot water piping to “H.”
2. The installation of unions and water shutoff valves in both
the hot and cold water supply lines is recommended for
easy removal of the unit if service or replacement is required. (Figure 3.)
3. ECR International recommends installing a tempering valve
in the domestic hot water line of the Watter$aver . A tempering valve reduces the risk of scalding injuries by lowering
the point of use temperature of the hot water for faucets and
showers by mixing cold and hot water in the supply lines
while allowing untempered hot water to be used by certain
appliances such as dishwashers and washing machines
that require increased water temperatures. By setting the
thermostat on the Watter$aver to obtain the higher temperatures required by these appliances, you may create the
potential for a scald injury if a tempering valve is not installed. (Figure 4.)
7. After piping has been properly connected to the water
heater, open all hot water faucet s and the cold water supply
valve to the tank and allow the tank to completely fill with
water. To purge the lines of any excess air and sediment,
keep the hot water faucet open for 3 minutes after a constant flow of water is obtained. Close the faucet and check
all connections for leaks.
WARNING
!
Water supply to the Watter$aver must
180° F (82.2° C). Water temperatures in excess of 180°
F (82.2° C) will cause the high temperature cutout switch
to shut off power to the unit. The high temperature cutout switch must be reset before the water heater can
be operated.
IMPORTANT: Remember to install a suitable drain
pan under the water heater and pipe the drain line to
an adequate drain.
!
not exceed
Figure 4 T empering V alve Connections
Cold Water Inlet
Vacuum Relief Valve
Hot Water Outlet
Tempered
Water Supply
* When installed in the Commonwealth of Massachusetts, the T empering
Valve must have a maximum setting of 130 °F
4. If installing the Watter$aver in a closed water system,
install a relief valve or expansion tank in the cold water line
as specified under “Closed System/Thermal Expansion.”
(Figure 3.)
Untempered
Water Supply
Tempering Valve*
WARNING
!
Do not operate the Watter$aver with the cold water
shutoff valve closed. This can result in serious damage
to the water tank and will void the warranty .
ELECTRICAL CONNECTIONS
CAUTION
!
Do not apply power to an empty or partially filled water
heater. This can result in serious damage to the ta nk
and destroy the heating elements and will void the warranty.
When making electrical connections, always make sure:
• The electrical supply has the proper overload fuse
or breaker protection.
• Wire sizes and connections comply with all applicable codes.
• Wiring is enclosed in an approved conduit (if required by local codes).
!
!
IMPORTANT: The manufacturer recommends installing thermal traps to reduce the effects of stacking. (See
Figure 3 and page 10.)
5. Install a shutoff valve in the cold water inlet line. It should
be located close to the water heater and be easily accessible. Know the location of this valve and how to shut off the
water to the heater.
6. Install a discharge line in the temperature and pressure
relief valve as shown in Figure 2 of these instructions.
Watter$aver Heat Pump Water Heater
• The water heater and electrical supply are properly
grounded.
If you lack the necessary skills required to properly install
the Watter$aver , DO NOT PROCEED. Have a qualified electrician perform the installation.
WARNING
! !
Do not use an extension cord to supply power to the
Watter$aver Heat Pump Water Heater!!
8
Made In Rome, NY , USA
IMPORT ANT: Figures 5 and 6 are provided as reference
drawings for the 208/240V 2-WIRE MODELS ONLY.
Always reference the wiring diagram on the water heater
for the correct electrical connections.
Figure 5 Field Wiring For 208/240V 2-Wire
Models ONL Y!!
Junction Box Cover
Ground Wire Conduit
Red Wire
Green
Ground
Screw
Black Wire
Figure 6 Wiring Diagram For 208/240V 2-Wire
Models ONL Y!!
Overload
Approved Connectors
L1- Black
L2- Red
Connection
To 208/240
50 and 60
HZ/1 Phase
Power
Supply
Disconnect Switch
INST ALLING ELECTRICAL WIRING
TO THE W ATER HEA TE R
1. BE SURE TANK IS COMPLETEL Y FILLED WITH
WATER before making any electrical connections.
2. Shut off the power source to the unit.
3. Loosen the screw holding the junction box cover
to the top of the water heater. Set the cover aside.
4. Make the electric connections to the water heater in
accordance with local utility requirements and codes.
A standard ½” (1.27 cm) opening has been made in
the junction box for conduit connections.
5. Ground the water heater by connecting a grounding
wire from the electric service ground terminal to the
green grounding screw in the junction box of the water
heater.
INSTALLA TION CHECKLIST
W ATER HEATER LO CAT ION
Centrally located in relation to the water piping system.
Located indoor s in a vert ical position and protected from
fr eezing temperatures.
Area prot ected fr om water damage.
Green
Ground
Screw
Electric Service Ground
CAUTION
!
!
Applying electric power to elements that are not submerged in water will destroy them. The manufacturer
will not warranty any elements damaged in this manner.
Drain pan properly installed and piped to an adequate
drain.
Sufficient r oom to maintain or service the water heater.
WATER SYSTEM PIPING
Properly installed and free of leaks.
T& P r elief valve properly installed.
Primary and secondary condensate drains piped.
Discharge line run to an open drain and protected f r om
freezing.
Heater completely f illed with water.
Closed system pressure build-up precautions installed.
Tempering v alves inst alled per manufact urer ' s
instructions (if r equir ed).
ELECTRI CAL CONN ECT ION S
Wiring and c onnections comply wit h all applicable c odes.
Water heater and elec tric supply pr oper ly gr ounded.
Proper overload fuse or breaker protection installed.
ECR International
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ST ART-UP AND OPERA TION
WA TER HEA TER OPERA TION
WARNING
!
!
DO NOT attempt to operate or repair this water heater
if the thermostat or surrounding insulation has been
exposed to water in any way . Call a qualified service
technician to inspect the unit and immediately replace
any thermostat or insulation that has been exposed
to water. Water heaters subjected to flood condi-
tions or thermostats that have been submerged
in water require replacement of the entire water
heater.
EMERGENCY SHUT -OFF
A high temperature cutout switch on the Watter$aver
will automatically shut the unit off in the event that water temperature exceeds 180° F (82.2° C). The switch
can be reset by firmly pushing the red reset button
located behind the thermostat panel on the front of the
unit.
IMPORTANT: The water temperature must be
below 180°F (82.2° C) in order to reset the unit.
IMPORTANT: Be sure the water tank is completely
filled before applying electrical power to the unit.
1. When there is a demand for hot water, cold water (from
the water supply), enters the tank, travels down the dip tube,
and is delivered to the bottom of the tank.
2. The lower temperature sensor reacts to the decreased
tank temperature and energizes the heat pump.
3. The heat pump will continue to operate until the water
temperature reaches the thermostat setting.
IMPORT ANT: When the heat pump is running, the unit
will emit sounds similar to a refrigerator or dehumidifier.
4. If the demand for hot water is greater than the recovery
rate of the heat pump, the upper temperature sensor will
react to the decreased upper tank temperature, turn off the
heat pump and energize the upper electric resistance element. The mode of operation is indicated by the LED indicators.
IMPORT ANT: In the event of heat pump system failure
or extreme ambient (hot or cold) conditions, the red
LED will glow. Refer to the “T roubleshooting Guide” in
this manual for more information.
WA TER TEMPERA TURE REGULA TION
1. To ensure the unit is completely filled, open all hot water faucets to allow air to escape from the piping. Then
close the faucets, turn on the power supply , and rotate the
temperature selector dial to the desired setting.
2. The upper electric resistance element (represented by
a green LED located inside the front grille of the Watter$aver
shroud) will turn on after a brief delay and turn off when the
upper temperature sensor is satisfied.
3. When the green LED turns off, the yellow LED will glow
and the compressor and fans will energize. The heat pump
will operate until the lower temperature sensor is satisfied.
IMPORTANT: There will be a brief time delay between
compressor start-up and when the fans begin to run.
4. When the heat pump stops running, the LEDs will stop
glowing. At this point, the water has reached the set temperature.
QUICK REFERENCE- The LED indicators inside the
front grille of the Watter$aver shroud represent:
Green – Upper electric resistance element
Yellow – Compressor
Red – Lower electric resistance element
The thermostat is adjusted to a temperature setting of 120° F
(48.9° C) or lower when it is shipped from the factory. Water
temperature can be regulated by adjusting the thermostat to
the preferred setting as shown in Figure 7.
Figure 7 Approximate Thermostat Settings
LOW 105° F
MED 130° F
HIGH 160° F
NOTE: Temperature settings beyond the black indicator will re-
sult in decreased efficiency, due to increased operation in electric resistance mode.
The preferred starting point is 120° F (48.9° C). There is
a hot water scald potential if the thermostat is set too
high.
!
DANGER
!
Adjusting the thermostat past the “MEDIUM” setting
on the dial will increase the risk of scald injury .
Watter$aver Heat Pump Water Heater
10
Made In Rome, NY , USA
During low demand periods when hot water is not being
used, a lower thermostat setting will reduce energy loss
and may satisfy your hot water needs. If hot water use is
expected to be more than normal, a higher setting may
be required to meet the increased demand.
• Normal expansion/contraction of metal parts during
heat-up and cool-down.
• Sediment build-up on the tank bottom or scale and
mineral deposits on the heating elements.
When leaving your home for extended periods, turn the
thermostat to its lowest setting. This will maintain the water at low temperatures with minimum energy loss and
prevent the tank from freezing during cold weather.
DANGER
!
Hot water can produce first degree burns within 3 seconds at 140° F (60° C), 20 seconds at 130° F (54.4°
C), or 8 minutes at 120° F (48.9° C). Installing an
anti-scald device in the hot water supply line will
reduce the risk of scald injury .
Households with small children, elderly or disabled
members, or anyone with sensitive skin may require
a lower temperature setting to reduce the risk of scalding.
OPERATIONAL CONDITIONS
WATER ODOR
The water supply system may require special filtration
equipment from a water conditioning company to successfully eliminate all water odor problems.
Each Watter$aver contains an anode rod which slowly dissipates while protecting the tank from corrosion. Certain
water conditions will cause a reaction with the rod, the
most common being a “rotten egg smell” caused by hydrogen sulfide gas dissolved in the water.
!
DANGER
!
Hydrogen gas can be produced in a hot water system
that has not been used for a long period of time (usually two weeks or more). Hydrogen gas is extremely
flammable and can ignite when exposed to a
spark or flame.
T o prevent the possibility of injury under these conditions, open the hot water faucet at the nearest sink for
several minutes before using any electrical appliance
connected to the hot water system. If hydrogen gas is
present, you will probably hear a sound like air escaping through the faucet as water begins to flow. DO
NOT SMOKE OR HA VE ANY OPEN FLAME NEAR
THE FAUCET WHEN IT IS OPEN!!
STACKING
Stacking occurs when many short draws of hot water (3
gallons (1 1.4 liters) or less) are taken from the water heater
tank over a period of time. This results in increased cycling of the water heater which will increase the water
temperature at the hot water outlet. Stacking is a common
phenomenon with storage water heaters. The control system in the Watter$aver helps prevent this situation by continuously monitoring the upper tank temperature.
.
WA TER HEA TER MAINTENANCE
CLEANING THE WA TTER$A VER
!
Anode rods made from alternative materials that might eliminate odor problems are also available. Please check with
your supplier for more information.
WARNING
! !
Do not operate the Watter$aver without the anode rod
installed. This will void the warranty .
WATER HEATER SOUNDS
During normal Watter$aver operation, certain noises may
be heard. These noises are common and may result from:
• Operation of compressor and fans.
IMPORTANT: Fan cycling may occur when ambient
temperatures are high.
ECR International
• The air filter should be cleaned at least twice a year
or whenever it is visibly dirty. A dirty filter reduces air
flow to the heat pump’s evaporator coil, resulting in
decreased efficiency . To clean the filter , remove it from
the shroud by pulling it away from the hook fasteners. then vacuum it or wash it in warm water with a
mild soap and pat it dry before replacing it.
• The outer surfaces of the Watter$aver Heat Pump
Water Heater may be cleaned with a sponge and warm
soapy water. Do not use bleach, abrasive cleaners, or
solvents which will damage the unit’s finish.
DRAINING AND FLUSHING
The Watter$aver should be drained completely if being shut
down in freezing temperatures. It is recommended that the
water tank be flushed every 6 months to remove sediment
that builds up during operation. T o drain and flush this water heater:
11
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1. Disconnect power to the unit.
WA TTER$A VER TROUBLESHOOTING GUIDE
2. Close the cold water inlet valve and open a nearby
hot water faucet.
3. Connect a hose to the drain valve and terminate it
at an adequate drain.
4. Open the drain valve and allow the tank to drain,
periodically opening and closing the cold water inlet
valve to flush sediment from the tank.
5. When clear water is observed coming from the drain
hose, close the drain valve and disconnect the hose.
6. Remove and inspect the anode rod and replace if
necessary .
7. Open the cold water inlet valve to refill the tank with
water.
8. Close the hot water faucet when water begins flowing from it.
9. Restore power to the unit.
10. Refer to “S tart Up Procedures” in this manual.
IMPORTANT: If the water heater is going to be shut
down for an extended period, the drain valve should be
left open.
!
DANGER
!
UNIT DOES NOT TURN ON
AFTER WIRING IS COMPLETE
Insufficient Power From Breaker. Verify 208/240 VAC
power source with a 30 amp breaker.
Breaker In “OFF” Position. Turn breaker to “ON” posi-
tion.
Wiring May Be Incorrect. Verify wiring with wiring dia-
gram.
High Temperature Cutout Switch Is Open. Reset high
temperature cutout switch by removing top element cover
and pushing the red “reset” button until it clicks.
Defective Control Board. Replace control board.
Defective High Temperature Cutout Switch. Replace
high temperature cutout switch.
COMPRESSOR WILL NOT TURN ON
Manual Bypass Switch On Control Board Is In The
“Elec” Position. Switch manual bypass switch to the “HP”
position.
Ambient Conditions Outside Heap Pump’s Operating
Range. Heat pump designed to operate in ambient con-
ditions above freezing.
Water draining from the Watter$aver Heat Pump Water Heater will be hot and can result in an injury by
scalding. Do not allow
anyone to come in contact with
draining water!!
W ATT ER$AVER INSP ECT I O N
Action
Check for leaking or d amaged
water p iping
Check for proper gr ou nd
connection and frayed or loose
Check for presence of flammable
materials in the installat ion ar ea
Drain and f lush tank x x
Check anode rod x x
Clean air filt er x x
!
3 Mos. 6 Mos. 9 Mos. 1 Yr.
xxxx
xxxx
xxxx
WARNING
Every
!
Sediment build-up and mineral deposits may cause
premature tank failure. Drain and flush the tank as noted
under “Draining and Flushing” in these instructions.
Wiring May Be Incorrect. Verify wiring with wiring diagram.
HIGH TEMPERATURE CUTOUT
SWITCH ACTIVATED
Defective Upper Or Lower Temperature Sensors. Replace
temperature sensor(s).
Defective High Temperature Cutout Switch. Replace
high temperature cutout switch.
Defective Control Board. Replace control board. (See
warranty.)
Wiring Of Upper Or Lower Temperature Sensor May
Be Incorrect. Verify wiring with wiring diagram.
Stacking. See “Stacking” on p age 10.
EV APORA TOR FROSTING OR ICING
Defective Evaporator Temperature Sensor. Replace
evaporator temperature sensor.
Watter$aver Heat Pump Water Heater
12
Made In Rome, NY , USA
EV APORAT OR FROSTING OR ICING (continued)
INSUFFICIENT HOT WA TER (continued)
Loss Of Refrigerant Charge/Leak In Heat Pump System. Repair leak and reprocess heat pump system with 16
oz. (.47 liters) of R134A. (See warranty .)
Defective Thermoexpansion V alve (TXV). Replace TXV .
(See Warranty .)
Poor Air Flow. Ensure operation of both fans, verify evapo-
rator coil and air filter are not dirty, and make sure airflow
to inlet or outlet is not blocked.
Important: Fan cycling may occur in ambient conditions greater than 90° F (32.2° C).
T&P VALVE DRIPPING
System Pressure T oo High. Decrease system pressure.
Improperly Seated T & P Valve Seal. Refer to “T & P
valve” on page 5 of this IOM.
Defective T & P Valve. Replace T & P valve.
NO HOT WATER
Insufficient Power To Unit. Verify power supply.
Defective Upper Electrical Element. Replace upper
electrical element.
Defective Thermostat. Replace thermostat.
Long Runs Of Exposed Piping Or Hot Water Piping In
Exposed Wall. Insulate piping.
Sediment Or Lime In Tank. Flush tank as described on
page 11 of this manual.
Leaking Faucets. Repair faucets.
Loss Of Charge. See warranty.
SLOW HOT WATER RECOVERY
Defective Upper Electrical Element. Replace upper elec-
trical element.
Defective Control Board. Replace control board.
Defective Upper Or Lower Temperature Sensors. Re-
place temperature sensor(s).
Loss Of Charge. See warranty.
WATER ODOR
Sulfides In Water. See “Water Odor” on page 10.
RED LED GLOWING
Manual Bypass Switch On Control Board Is In The
“Elec” Position. Switch manual bypass switch to the “HP”
position.
Defective Control Board. Replace control board.
Defective Upper Temperature Sensor. Replace upper
temperature sensor.
High Temperature Cutout Switch Is Open. Reset high
temperature cutout switch by removing top element cover
and pushing the red “reset” button until it clicks.
INSUFFICIENT HOT WATER
Defective Temperature Sensors. Replace temperature
sensors.
Thermostat Too Low. Increase thermostat setting.
Unit Undersized For Application. Install adequately
sized water heater.
Defective Upper Element. Replace upper element.
Piping Is Incorrect. Refer to “Piping Installation” on page
6 of this manual.
Ambient Conditions Outside Of Operating Range.
Move water heater to more suitable location.
Lower T ank Heat Is Called For Within Six Minutes Of A
Previous Compressor Shutdown. Allow a minimum of
six minutes between restarts.
Heat Pump System Failure. Consult factory.
HIGH OPERATING COSTS
Manual Bypass Switch On Control Board Is In The
“Elec” Position. Switch manual bypass switch to the “HP”
position.
Thermostat Too High. Lower thermostat into the “most
efficient” range of the temperature indicator label.
Unit Undersized For Application. Install adequately
sized water heater.
Loss Of Charge. See warranty .
ECR International
13
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HEA TING ELEMENT REPLACEMENT
WARNING
!
!
5. Clean the area where the gasket fits to the tank. If
you are replacing the bottom element, remove the
accumulated sediment on the bottom of the tank.
Heating element removal and replacement involves the
disconnection of electrical wiring. The following procedures must only be performed by a qualified service
technician.
The Watter$aver Heat Pump Water Heater is factory
equipped with a 4500 watt heating element that requires a
30 amp circuit breaker. For inst allations that don't have an
existing 30 amp circuit for the water heater, ECR International
offers a 3500 watt element kit* that will allow the use of a
20 amp circuit breaker. V oltage/watt age rating information
can be found on the flange or terminal block of the element
or on the unit rating plate.
* For more information on the 3500 watt heating element kit, contact the
factory at the phone number provided with this installation manual.
1. Shut off electric power to the water heater .
2. Drain the water heater as directed under “Draining
and Flushing.”
3. Remove the access cover and fold the insulation
outward and away from the heater element(s). Remove
the plastic thermostat cover from the thermostat,
making sure to disengage the attachment point from
the thermostat.
4. Disconnect the electric wires from the heating
element (Figure 8) and remove the screw-in elements
by turning the element counterclockwise with a 1½”
socket wrench. Remove the existing gasket.
6. Make sure the replacement element has the correct
voltage and wattage rating. Position the new gasket
on the element and insert it into the water heater tank
(Figure 9). Tighten the element by turning it clockwise
until secure.
Figure 9 Replacing The Heater Element
High Temperature Cutout Switch
Holding Bracket
Screw-In Element
Spud
Gasket
7. Close the drain valve. Open all hot water faucets and
allow the tank to fill completely with water. To purge
the lines of any excess air and sediment, keep the hot
water faucet open for 3 minutes after constant flow of
water is obtained.
8. Close the faucet and check all connections for
leaks. Check for leaks around the element(s).
9. Connect the electric wires to the heater element.
Make sure the wires are secure and the attachment
points are engaged on the thermostat.
Figure 8 Disconnecting Electric Wires From the
Heating Element
Wires
Screws
Watter$aver Heat Pump Water Heater
Elements
10. Replace the plastic thermostat cover, insulation,
and the access cover(s).
1 1. Make certain the tank is filled with water . Applying
electric current to heater elements not submerged in
water will destroy them.
12. Restore the electric power supply to the water
heater.
14
Made In Rome, NY , USA
WA TTER$AVER SPECIFICA TIONS AND PERFORMANCE
W ATTER$AVER PHYSI CAL P RO P ERTIES AND PERFORMANCE
EF
First Hour
Rating
2.4 60 dB R-134A
Rating
61.8 gal 5100 Btuh 60" 180 lbs. 22.25" 50 gal 16 oz .
(233.9 l) (1310.4 k c ) (152.4 c m) (81.65 k g) (56.52 cm) (189.3 l) (.5 l)
Nominal
Output
Noise
Level
Height Weight Diameter C apacity
W ATT ER$AV ER ELECTRI CAL SPECIFICATIONS
Volts Hz Phase Breaker MCA
208/240V 60/50 1 30 A mps* 22.5A
* The WatterSaver Heat Pump Water Heater is factory equipped
with a 4500 watt element that requires a 30 amp circuit breaker.
For installations that don't have an existing 30 amp circuit for the
water heater, ECR International offers a 3500 watt element kit
that will allow the use of a 20 amp circuit breaker.
Working
Pressure
150 PSI G
Refrigerant Charge
MEA #067-01-E
Massachusetts Approval #P1-0804-30
ECR International
15
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WA TTER$AVER COMMON REPLACEMENT PARTS
W AT TER$AV ER COM M O N REPL ACEMENT P ARTS
Part Number
1 240-0817 24" Fan Cord
2 240-319 2 2 30V HPWH Fan
3 240-3653 High Temperature Cutout Switch
4 240-3289 Control Board Support (Not Shown)
240-4177 Contr ol Board (60 Hz )
5
240-4248 Contr ol Board (50 Hz )
6 240-3665 Upper Element Cover
7 240-3645 4500 Watt Electrical Element
8 240-3646 Element Gasket
9 240-3647 Dip Tube (Not Shown)
10 240-3648 Temperature & Pressure Relief Valve (T&P Valve)
11 240-3556 Temperature Controller
12
240-3659 Ac cess Door
13 240-3644 Anode Rod (Not Shown)
14 240-3229 Evap Temperature Sensor (Not Shown)
15 240-3770 Discharge Temperature Sensor (Not Shown)
16 240-3771 Upper Tank Temperature Sensor (Not Shown)
17 240-3772 Lower Tank Temperature Sensor (Not Shown)
240-3650 Drain Valve
18
240-4670 Drain Valve (Brass)
19 240-3557 Temperature Controller Knob
20 109-4279 Front Top Cover
21 109-4280 Rear Top Cover
22 N/A Elec/HP Toggle Switch
23 550-1119 Watter$aver CMS Kit (Optional)
24 550-1140 3 500 W att Heat ing Element Kit ( Optional)
For inquiri es on parts not listed, please contact the factory.
NOTE:
Description
T emperature Sensor
Connections on Control
Watter$aver Heat Pump Water Heater
16
Made In Rome, NY , USA
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