Watter Saver HPWH500AAOC General instructions

P/N# 240-3554, Rev. 2.1 [07/04]
ECRInternational
P.O.Box 4729, 2201DwyerAvenue
Utica,NewYouk1354-4729
Phone:[phone]
Fax:[phone]
[email protected]
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
An ISO 9001-2000 Certified Company
HPWH HEAT PUMP WATER HEATER
60HZ- ModelHPWH500AAOC
50HZ- ModelHPWH500BAOC

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 2
INSTALLATION, OPERATION & MAINTENANCE MANUAL
P/N#240-3554,Rev. 2.1 [07/04]
SAFETY INSTRUCTIONS
DonotusetheWatter$averHeatPumpWaterHeater
if it has been dropped or damaged in any way.
The Watter$aver must not be installed in any area
whereflammable liquids orvapors maybepresent.
Do not store or use gasoline or other combustible
materials or liquids near or adjacent to this water
heater.
Do not use the Watter$aver in conjunction with a
spa or hot tub.
Check the rating plate on the Watter$aver before
installationtomake certainthevoltage shown isthe
same as the electric supply to the water heater.
The Watter$avermust be connectedonly toa prop-
erly grounded electrical supply. Do not fail to prop-
erlyground this waterheater.
TheWatter$avershouldonlybeservicedbyqualified
servicepersonnel.
Turn off the electrical supply before servicing the
Watter$aver.
This manual is intended as an aid to qualified service
personnel for proper installation, operation, and main-
tenance of the Watter$aver Heat Pump Water Heater.
Inthe Commonwealth of Massachusetts,thisunit must
be installed by a licensed plumber and licensed elec-
trician.
Read this manual carefully before attempting to in-
stall or operate the Watter$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 INSTALLER
1.Affixthese instructions onoradjacentto the waterheater.
2. Before leaving the premises, review this manual to be
suretheheater hasbeeninstalledcorrectly. Startand oper-
atetheunitfor onecompletecycleandmake sure thewater
temperatureis acceptableto the consumer.
TOTHE OWNER
Retainthismanual andtheattached warranty forfutureref-
erence.Retain theoriginalreceipt asproof of purchase.
HPWH HEAT PUMP WATER HEATER
Shipping Damage MUST be Reported to the Carrier IMMEDIATELY!!!
Examine the exterior. Remove cover and examine compressor and piping for signs of damage.
TECHNICALSERVICE / WARRANTYASSISTANCE
For technical service or warranty information on your
Watter$averHeatPumpWaterHeater,seetheattached
warrantyandhavethefollowinginformationreadywhen
calling:
Model Number __________________________
Serial Number __________________________
Installation Date ________________________
Forquestions regardinginformation inthis installa-
tion manual, contact your contractor or distributor.
IMPORTANT NOTE
The Watter$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.

[email protected]
ECRInternational 3
CONSUMERINFORMATION
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 LocalAuthorities having
jurisdiction over your installation.
CONSUMER RESPONSIBILITIES
This manual has been prepared to acquaint you with the
installation,operationandmaintenanceofyourWatter$aver
Heat Pump Water Heater and to provide important safety
informationin theseareas.
We urge you to read all of the instructions thoroughly
beforeattempting theinstallationor operation of this water
heater. This manual should be kept for future reference.
The manufacturer of this water heater will not be liable
for any damages caused by failure to comply with the
installation and operating instructions outlined in this
manual.
If you lack the necessary skills required to properly install
this water heater or you have difficulty following the
directions, you should not proceed, but have a qualified
person perform the installation of this water heater.
A rating plate identifying your water heater can be found
on the front of the jacket. When referring to your water
heater, always have the information listed on the rating
plate readily available.
Retain your original receipt as proof of purchase.
!!
DANGER
Water temperature over 125° F (51.7° C) can cause
severe burns or death from scalding.
Feel the water before bathing or showering.
Children, disabled, and elderly are at highest risk of
being scalded.
See the instruction manual before setting the water
temperature on the Watter$aver Heat Pump Water
Heater.Temperaturelimitingvalvesareavailableforuse
andmaybepurchasedat mostplumbingsupplystores.
TABLE OF CONTENTS
Installer and Owner Notes ........................... 1
Safety Instructions ....................................... 1
Consumer Information................................. 2
Consumer Responsibilities.......................... 2
Tampering and Modification ........................ 3
SiteLocation ................................................ 3
GeneralInstallation ....................................... 4
Piping Installation ........................................ 6
Electrical Connections ................................. 7
Installation Checklist.................................... 8
Start-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

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 4
!!
!!
!!
!!
TAMPERINGAND MODIFICATION
DANGER
Tampering withthethermostat,heaterelements, elec-
trical connections, or temperature and pressure re-
lief valve is dangerous and may result in serious in-
jury or death. Tampering voids all warranties. Only
properly trained, qualified service personnel should
service these components. Do not attempt to modify
or change this water heater in any way.
INSULATION BLANKET
Some governing bodies may require the use of external
insulation blankets when water heaters are installed in
newly constructed homes and additions. If an insulation
blanket is applied to the Watter$aver Heat Pump Water
Heater, CAUTION must be exercised so as to not restrict
itsproper functionandoperation.Please note thefollowing:
• 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.
• 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 earth-
quake. 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.
The Watter$aver should be located in an area not subject
to physical damage by moving vehicles or area flooding.
(Figure1.)
Waterheaterslocatedin unconditionedspaces(attics,base-
ments, etc.) may require the water piping and drain piping
to be insulated to protect against freezing. The drain and
controls must be easily accessible for operation and ser-
vice.
The Watter$aver Heat Pump Water Heater should be lo-
cated in an area where leakage of the tank or connections
will not result in damage to the area adjacent to the water
heateror tolower floorsof thestructure.
IMPORTANT: Local codes and requirements 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 suit-
able for water heater installation. Natural air move-
ments can carry flammable vapors some distance
fromwhere theyare storedor used.Thewater heater
thermostat contacts can arc and ignite these vapors
causing property damage, serious burns or death.
Neverstore or useflammablesubstancesinthe 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
underthewater heater toprotecttheproperty fromdamage
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
Figure 1 ResidentialGarage Installation
Vehicle Stop
Drain
Drain Pan

[email protected]
ECRInternational 5
!!
!!
heaternearasuitableinsidedrain.Outsidedrainsaresubject
to freezing temperatures which can obstruct the drain line.
Thepiping shouldbeat least¾” I.D. andpitched forproper
drainage.(Figure2.)
All condensate drain lines and T&P valve drains must be
pipedseparatelyandroutedto anadequatedrain.Toprotect
the Watter$aver’s outer finish, do not pipe drain lines into
thedrain pan.
GENERALINSTALLATION
WARNING
Failureto follow theinstructionsin thisinstallation,op-
eration,andmaintenancemanualwillreleasethemanu-
facturerfromany liabilityforanywater damageincon-
nectionwith thiswater heater.
1.Selectthe proper installationsiteforthe Watter$averand
unpack it in the location where it will be installed.
IMPORTANT: The Watter$aver must not be installed
outdoors,inacorrosiveenvironment,orinanareawhere
leakage of the tank or plumbing connections will
damageadjacentareasor lowerfloorsofthestructure.
For best results, make certain the unit is placed on a
levelsurface.
2.Usea ¼” nutdrivertoloosen thescrewsaroundthe base
of the shroud and remove it from the water heater. it is not
necessaryto remove thescrewsas theholesin the baseof
theshroud areslotted.
3. Remove the screws from the shroud and separate the
halves.
4. Install plumbing to the tank in accordance with local
plumbing codes. Ensure plumbing connections will allow
theinstallationand removalofthe shroud afterallplumbing
is complete (See “Water System Piping.”)
5. Install primary and secondary condensate drain lines to
theevaporatorpanandroutetoanadequatedrain.Ifa drain
isnot accessible,the installercan use a condensate pump
(soldseparately) or installECR’sWatter$aver Condensate
ManagementSystem.Contactthefactoryfor more informa-
tion.
CAUTION
Donotapply powertoan empty orpartiallyfilled water
heater. This can result in serious damage to the tank
anddestroytheheatingelementsandwillvoidthe war-
ranty.
• Adjustable Wrench • Propane Torch
• Condensate Drain Tube - 3/8" I.D. • Solder - 95/5
• Condensate Drain Tube - ½" I.D. • Soldering Flux
• Nut Driver - ¼" • Sand Cloth
• Phillips Screwdriver • Tape Measure
• Pipe and Plumbing Fittings • Wire Nuts
• Pipe Cutter • Wire Stripper/Cutter
• Pipe Thread Tape
Prior to installation, be sure to have the following tools
and materials available:
NOTE: Condensateventmustbe even withtop oftank for properoperation.
This illustration meets the code requirements
of the Commonwealth of Massachusetts.
Hot Water Shutoff Valve Cold Water Shutoff Valve
Drain Line
(3/4” Min. I.D.)
Drain
Primary
Condensate
Drain 1/2” I.D.
(Mustbepiped
separatelyand
routedtoan
adequatedrain)
Discharge Line
(6”(15cm)Max.
abovedrain.
12”forthe
Commonwealthof
Massachusetts)
1” (2.5 cm) Min.
Union
Secondary
Condensate
Drain 3/8” I.D.
(Mustbepiped
separatelyand
routedtoan
adequatedrain)
T&PValve
ThermalTrap
Condensate
Vent
(Recommendedfor
propercondensate
drainage)
ThermalTrap
Drain Pan
(2½”(6.3cm)Max.depth)
Vacuum Relief Valve
Figure 2 T&PRelief Valve and Condensate
DrainLine Installation
Hot Water Outlet
Cold Water
Inlet From
Water Supply
1
2Drain Valve
In the Commonwealth of Massachusetts, the hot water
outlet temperature must not exceed 130° F
Brass drain valves must be used for installation in the
Commonwealth of Massachusetts
1
2

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 6
!!
!!
!!
!!
6. Ensure the toggle switch on the control board (See “Re-
placementPartsList” on page16forlocation.) is inthe“HP”
position. In the “ELEC” position, the heat pump system is
disabled and the unit will operate as an electric resistance
waterheaterONLY.
7. Connect wires L1, L2, and Ground to the electric box
located in front of the evaporator coil on top of the tank.
8.Replacetheshroudandensure wires L1,L2,andGround
pass through the opening in the top of the shroud.
WATER SYSTEM PIPING
Waterpiping, fittings, andvalvesmust beproperlyinstalled
inaccordancewith local plumbingcodesforthe correctand
safeoperationoftheWatter$averHeatPumpWaterHeater.
Pleasenote the following:
• DO NOT install the water heater with piping that is
unsuitablefor drinkingwater (ironpiping, PVC piping,
orpiping that has been treatedwith chromates,boiler
seal, or other chemicals). Use only new piping such
ascopper, CPVC, orpolybutylene.
• DO NOT add any chemicals to the piping which
could contaminate the water supply.
• DO NOT useany type ofpump,valve, or fittingthatis
unsuitableforpotablewater.
• DO NOT install check valves in the cold water sup-
ply to the unit.
• DO NOT use valves that excessively restrict water
flow. Use onlyfull flow orgate valves.
• DO NOT useany lead-based solderin potable water
lines. Use 95/5 tin-antimony or another suitable non-
leadsolder.
• DO NOT tamper with any components of the water
heater.Tamperingisdangerousandcanresultinprop-
erty damage, severe injury, or death. Tampering with
the unit voids all warranties so only a qualified techni-
cian should service the unit.
CAUTION
Neveroperatean emptyorpartiallyfilled water heater.
This can result in serious damage to the tank and will
destroythe heatingelements.
TEMPERATUREAND PRESSURE RELIEFVALVE
(T&PVALVE)
WARNING
Do not attempt to operate the Watter$aver without a
properlyinstalledtemperatureandpressurereliefvalve.
OperatingtheWatter$averwithout aT&Pvalvewillvoid
the warranty and can result in property damage, per-
sonal injury, or death.
Forprotectionagainstexcessivepressureandtemperatures,
atemperatureand pressurereliefvalvemust beinstalledin
theopeningmarked“T&PValve”andconnectedto a proper
dischargelinewhichterminatesatanadequatedrain.(Figure
2.)AT&Pvalveis furnished withthe waterheater.
Thisvalvemustbedesigncertifiedbyanationallyrecognized
testinglaboratoryasmeetingtherequirementsforreliefvalves
andautomaticshut-offdevicesforhot water supplysystems.
The functionof theT&P valve isto dischargewater in large
quantities in the event of an excessive temperature or
pressurebuild upin 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.
WARNING
Do not use an old or existing T&P valve with your
Watter$aver™Heat PumpWater Heateras it may be
damagedor inadequate forthe pressure ofthe unit.
ManuallyoperatetheT&P valve atleastonceayeartomake
sure it works properly. Because discharged water can be
hot,stand clear ofthe outlet andslowly lift themanual relief
leveronthevalve.Thenallowthe
watertoflowfor5-10secondsand
letthevalve “snap”closed.If, af-
ter several attempts, the valve
failstocloseandcontinues to re-
leasewater,immediatelyshutoff
electricalpowerandthecoldwa-
terinletvalve andcalla qualified
technician.
DANGER
Discharging water will be hot and can cause scald in-
juries or property damage. Discharge lines must be
properlyinstalled and pipedto anadequatedrain.
Discharge Lineto Drain
Manual ReliefLever
Temperatureand
Pressure Relief Valve

[email protected]
ECRInternational 7
! !
DISCHARGEDRAINLINES
• Must not be smaller than the pipe size of the relief
valveordrainstubs.
•Mustnot be capped,blocked,pluggedor containany
valvethat obstructsflow to thedrain.
•Mustterminateamaximumof6inches(15cm)above
a floor drain or external to the building provided the
externaldrainageisbelowthelevelofthe Watter$aver.
• Must be capable of withstanding 250° F (121.1° C)
without distortion.
• Must be installed to allow complete drainage of the
T&Pvalveanddischarge line.
CLOSEDSYSTEM/THERMALEXPANSION
Periodic discharge of the temperature and pressure relief
valve may be due to thermal expansion in a closed water
supply system. The water utility supply meter may contain
acheckvalve,backflowpreventer,orwaterpressurereducing
valve. This will create a closed water system. During the
heating cycle of the water heater, water expands, causing
pressureinsidethetankto increase.Undertheseconditions,
theT&Pvalvemaydischargehotwater, resultinginalossof
energy and a build-up of lime on the relief valve seat. To
prevent this, use one of the following two methods:
1. Install a diaphragm-type expansion tank that is
suitable for potable (drinking) water on the cold water
supplyline.Theexpansion tankmusthaveaminimum
capacity of 1.5 U.S. gallons (5.7 liters) per 50 gallons
(189.3liters) ofstoredwater.
2.Installa 125PSI(861.8kPa) pressurereliefvalve 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.
PIPING INSTALLATION
Piping, fittings, and valves should be installed
according to the installation drawing shown in
Figure 3.If the indoor installation area is sub-
ject to freezing temperatures, the water piping
must be protected by insulation.
Watersupplypressure shouldnotexceed80%
of the unit’s working pressure (150 PSIG) as
stated on the rating plate and in the specifica-
tion 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
and cold water pressures.
CAUTION
Heat cannot be applied to the hot and
cold water connections as they may con-
tain non-metallic parts. If solder connec-
tions are used, solder the pipe to the
threaded adapter before attaching the
adapterto the hotand cold waterconnec-
tions.
IMPORTANT: Always use a good grade
of joint compound and be certain that all
fittingsare drawnup tight.
Figure 3 RecommendedWaterPiping
In a closed system use either a thermal expansion tank
or pressure relief valve.
Pressure
Reducing
Valve
With
Bypass
ToAdditional
Cold Water
Taps
Hot Water
Shutoff Valve Thermal Expansion Tank
Cold Water Inlet From
Water Supply
ThermalTrap
Pressure Relief Valve
ThermalTrap
NOTE: Refertolocal plumb-
ing codes for correct and
safe operation of the
Watter$aver Heat Pump
Water Heater.
Vacuum Relief
Valve
Cold Water Inlet Valve
Hot Water
Outlet
This illustration does not
meet the code requirements
of the Commonwealth of
Massachusetts.

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 8
!!
!!
! !
!!
7. After piping has been properly connected to the water
heater, open allhotwater faucetsandthecold watersupply
valve to the tank and allow the tank to completely fill with
water. To purge the lines of any excess air and sediment,
keep the hot water faucet open for 3 minutes after a con-
stant flow of water is obtained. Close the faucet and check
all connections for leaks.
WARNING
Water supply to the Watter$aver must not exceed
180°F(82.2°C).Watertemperaturesinexcessof180°
F(82.2°C)willcausethehightemperaturecutoutswitch
toshutoff powertotheunit. Thehightemperaturecut-
out switch must be reset before the water heater can
beoperated.
IMPORTANT: Remember to install a suitable drain
pan under the water heater and pipe the drain line to
an adequate drain.
WARNING
Do not operate the Watter$aver with the cold water
shutoffvalveclosed.Thiscanresultin serious damage
to the water tank andwill void the warranty.
ELECTRICAL CONNECTIONS
CAUTION
Donotapply powertoan empty orpartiallyfilled water
heater. This can result in serious damage to the tank
anddestroytheheatingelementsandwillvoidthe war-
ranty.
When making electrical connections, always make sure:
• The electrical supply has the proper overload fuse
or breaker protection.
• Wire sizes and connections comply with all appli-
cable codes.
• Wiring is enclosed in an approved conduit (if re-
quired by local codes).
• The water heater and electrical supply are properly
grounded.
If you lack the necessary skills required to properly install
theWatter$aver,DONOTPROCEED.Haveaqualifiedelec-
tricianperform theinstallation.
WARNING
Do not use an extension cord to supply power to the
Watter$averHeatPumpWater Heater!!
1. Install the water piping and fittings as shown in Figure 3
by connecting the cold water supply to the fitting marked
“C”and thehot waterpiping to“H.”
2.Theinstallationof unions andwatershutoffvalvesin both
the hot and cold water supply lines is recommended for
easy removal of the unit if service or replacement is re-
quired.(Figure3.)
3.ECRInternationalrecommendsinstallingatemperingvalve
inthe domestic hotwaterline oftheWatter$aver.Atemper-
ing valve reduces the risk of scalding injuries by lowering
thepointofuse temperature ofthehotwaterfor 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$aver to obtain the higher tem-
peraturesrequiredbythese appliances, youmaycreatethe
potential for a scald injury if a tempering valve is not in-
stalled.(Figure 4.)
4. If installing the Watter$aver in a closed water system,
installa reliefvalve orexpansion tank inthe coldwater line
as specified under “Closed System/Thermal Expansion.”
(Figure3.)
IMPORTANT: The manufacturer recommendsinstall-
ingthermaltrapstoreducetheeffectsofstacking.(See
Figure3 and page10.)
5.Install a shutoffvalve in thecold waterinletline. Itshould
be located close to the water heater and be easily acces-
sible.Know thelocationof this valveandhow to shutoffthe
waterto theheater.
6. Install a discharge line in the temperature and pressure
reliefvalve asshown in Figure2 ofthese instructions.
Figure 4 TemperingValve Connections
Cold Water Inlet
Hot Water Outlet
Tempered
Water Supply
Untempered
Water Supply
Tempering Valve*
* When installed in the Commonwealth of Massachusetts, the Tempering
Valve must have a maximum setting of 130 °F
Vacuum Relief Valve

[email protected]
ECRInternational 9
!!
IMPORTANT:Figures5and6areprovidedasreference
drawings for the 208/240V 2-WIRE MODELS ONLY.
Alwaysreferencethewiringdiagramonthewaterheater
for the correct electrical connections.
CAUTION
Applyingelectricpower to elementsthatarenot sub-
mergedinwaterwilldestroy them. The manufacturer
willnotwarranty any elementsdamagedinthisman-
ner.
Figure 5 FieldWiring For208/240V 2-Wire
ModelsONLY!!
Junction Box Cover
Ground Wire Conduit
Green
Ground
Screw
Black Wire
Red Wire
Figure 6 Wiring Diagram For 208/240V 2-Wire
ModelsONLY!!
Approved Connectors
L1- Black
Overload
Connection
Green
Ground
Screw
Disconnect Switch
Electric Service Ground
L2- Red
To 208/240
50 and 60
HZ/1 Phase
Power
Supply
INSTALLING ELECTRICALWIRING
TOTHE WATER HEATER
1. BE SURE TANK IS COMPLETELY 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 electricconnectionsto thewaterheater 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.Groundthe waterheaterbyconnecting agrounding
wire from the electric service ground terminal to the
greengroundingscrew inthejunction box ofthewater
heater.
INSTALLATIONCHECKLIST
Located indoors in a vertical position and protected from
freezing temperatures.
WATER SYSTEM PIPING
Water heater and electric supplyproperlygrounded.
WATER HEATER LOCATION
Centrallylocated in relation to the waterpiping system.
Area protected from water damage.
ELECTRICAL CONNECTIONS
Properlyinstalled and free ofleaks.
T&P relief valve properlyinstalled.
Primaryand secondarycondensate drains piped.
Proper overload fuse or breaker protection installed.
Discharge line run to an open drain and protected from
freezing.
Tempering valves installed per manufacturer's
instructions (ifrequired).
Drain pan properlyinstalled and piped to an adequate
drain.
Wiring and connections complywith all applicable codes.
Sufficientroom to maintain or service the water heater.
Heater completelyfilled with water.
Closed system pressure build-up precautions installed.

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 10
!!
!!
WATERHEATER OPERATION
1. When there is a demand for hot water, cold water (from
thewatersupply),entersthetank,travelsdownthedip tube,
and is delivered to the bottom of the tank.
2. The lower temperature sensor reacts to the decreased
tanktemperature andenergizesthe heatpump.
3. The heat pump will continue to operate until the water
temperaturereaches thethermostat setting.
IMPORTANT: Whenthe heat pumpisrunning,theunit
will emit sounds similar to a refrigerator or dehumidi-
fier.
4. If the demand for hot water is greater than the recovery
rate of the heat pump, the upper temperature sensor will
reactto thedecreasedupper tanktemperature, turnoffthe
heat pump and energize the upper electric resistance ele-
ment.Themodeofoperation is indicated bytheLEDindica-
tors.
IMPORTANT: Intheeventofheat pump system failure
or extreme ambient (hot or cold) conditions, the red
LEDwillglow. Referto the “Troubleshooting Guide”in
thismanual for moreinformation.
WATERTEMPERATUREREGULATION
Thethermostatis adjusted toatemperaturesetting of 120°F
(48.9° C) orlower when it is shipped from the factory. Water
temperature can be regulated by adjusting the thermostat to
thepreferredsettingasshowninFigure7.
The preferred starting point is 120° F (48.9° C). There is
a hot water scald potential if the thermostat is set too
high.
DANGER
Adjusting the thermostat past the “MEDIUM” setting
on the dial will increase the risk of scald injury.
START-UPAND OPERATION
WARNING
DO NOT attemptto operateorrepairthiswater heater
if the thermostat or surrounding insulation has been
exposed to water in any way. Call a qualified service
technicianto inspect theunit and immediatelyreplace
any thermostat or insulation that has been exposed
to water. Water heaters subjected to flood condi-
tions or thermostats that have been submerged
in water require replacement of the entire water
heater.
EMERGENCYSHUT-OFF
A high temperature cutout switch on the Watter$aver
willautomatically shuttheunit offin the eventthat wa-
tertemperature exceeds180° F (82.2°C). Theswitch
can be reset by firmly pushing the red reset button
locatedbehindthe thermostatpanelon the frontofthe
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. To ensure the unit is completely filled, open all hot wa-
ter 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
agreenLEDlocated insidethefrontgrilleofthe Watter$aver
shroud)will turnon after abrief delayand turnoffwhen the
uppertemperature sensorissatisfied.
3. When the green LED turns off, the yellow LED will glow
andthe compressorandfans willenergize.Theheat pump
will operate until the lower temperature sensor is satis-
fied.
IMPORTANT: There will be a brief time delay between
compressor start-up and when the fans begin to run.
4. When the heat pump stops running, the LEDs will stop
glowing. At this point, the water has reached the set tem-
perature.
QUICK REFERENCE- The LED indicators inside the
frontgrilleof theWatter$avershroud represent:
Green – Upper electric resistance element
Yellow – Compressor
Red – Lower electric resistance element
NOTE: Temperature settings beyond the black indicator will re-
sult in decreased efficiency, due to increased operation in elec-
tric resistance mode.
LOW 105° F
MED 130° F
HIGH 160° F
Figure 7 ApproximateThermostat Settings

[email protected]
ECRInternational 11
!!
• Normal expansion/contraction of metal parts during
heat-upandcool-down.
• Sediment build-up on the tank bottom or scale and
mineraldeposits onthe heatingelements.
DANGER
Hydrogengas canbe producedin a hot water system
that has not been used for a long period of time (usu-
allytwo weeksormore). Hydrogen gas is extremely
flammable and can ignite when exposed to a
spark or flame.
To prevent the possibility of injury under these condi-
tions,open thehot water faucetat thenearest sink for
severalminutes beforeusing anyelectrical appliance
connectedto thehot watersystem. If hydrogen gas is
present,you will probablyhear asoundlike airescap-
ing through the faucet as water begins to flow. DO
NOT SMOKE OR HAVE ANY OPEN FLAME NEAR
THE FAUCET WHEN IT IS OPEN!!
STACKING
Stacking occurs when many short draws of hot water (3
gallons(11.4liters) or less)are takenfrom thewaterheater
tank over a period of time. This results in increased cy-
cling 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 sys-
temin the Watter$aver helps preventthis situationby con-
tinuouslymonitoring the uppertank temperature.
.WATER HEATERMAINTENANCE
CLEANINGTHEWATTER$AVER
• 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
decreasedefficiency.Tocleanthefilter,removeit from
the shroud by pulling it away from the hook fasten-
ers. 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$aver Heat Pump
WaterHeatermaybecleanedwithaspongeandwarm
soapywater. Donot use bleach,abrasive cleaners,or
solvents which will damage the unit’s finish.
DRAINING AND FLUSHING
TheWatter$avershouldbedrained completely ifbeingshut
downin freezingtemperatures. It isrecommended thatthe
watertank be flushed every 6 months toremove sediment
that builds up during operation. To drain and flush this wa-
terheater:
! !
!!
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.
When leaving your home for extended periods, turn the
thermostat to its lowest setting. This will maintain the wa-
ter at low temperatures with minimum energy loss and
prevent the tank from freezing during cold weather.
DANGER
Hotwater can producefirstdegree burnswithin3 sec-
onds 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
alowertemperature setting toreducetherisk ofscald-
ing.
OPERATIONAL CONDITIONS
WATER ODOR
The water supply system may require special filtration
equipmentfrom awater conditioning companytosuccess-
fully eliminate all water odor problems.
EachWatter$aver containsananode rodwhich slowly dis-
sipates while protecting the tank from corrosion. Certain
water conditions will cause a reaction with the rod, the
mostcommon beinga “rottenegg smell” caused by hydro-
gensulfide gasdissolved in thewater.
Anoderodsmadefromalternativematerialsthatmightelimi-
nate odor problems are also available. Please check with
yoursupplierfor moreinformation.
WARNING
Donotoperate theWatter$averwithout theanoderod
installed.This willvoid the warranty.
WATER HEATER SOUNDS
During normal Watter$aver operation, certain noises may
beheard. Thesenoises arecommon and may result from:
•Operation ofcompressorand fans.
IMPORTANT: Fan cycling may occur when ambient
temperatures are high.

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 12
!!
!!
1. Disconnect power to the unit.
2. Close the cold water inlet valve and open a nearby
hotwater faucet.
3. Connect a hose to the drain valve and terminate it
atan adequatedrain.
4. Open the drain valve and allow the tank to drain,
periodically opening and closing the cold water inlet
valveto flushsedimentfrom thetank.
5.Whenclearwateris observed comingfromthedrain
hose,close thedrain valveand disconnect thehose.
6. Remove and inspect the anode rod and replace if
necessary.
7.Open thecold water inletvalve torefill the tankwith
water.
8.Close thehot water faucetwhen waterbegins flow-
ing from it.
9. Restore power to the unit.
10.Refer to “Start UpProcedures” in this manual.
IMPORTANT: If the water heater is going to be shut
downforanextendedperiod,thedrain valve should be
leftopen.
DANGER
Water draining fromthe Watter$aver Heat Pump Wa-
ter Heater will be hot and can result in an injury by
scalding.Do notallow anyone to come incontact with
drainingwater!!
WARNING
Sediment build-up and mineral deposits may cause
prematuretankfailure.Drainandflushthetankasnoted
under“Draining andFlushing”in theseinstructions.
WATTER$AVER TROUBLESHOOTING GUIDE
UNIT DOES NOT TURN ON
AFTER WIRING IS COMPLETE
Insufficient Power From Breaker. Verify 208/240 VAC
powersource witha30 ampbreaker.
Breaker In “OFF” Position. Turn breaker to “ON” posi-
tion.
Wiring May Be Incorrect. Verify wiring with wiring dia-
gram.
High Temperature Cutout Switch Is Open. Reset high
temperature cutout switch by removing top element cover
and pushing the red “reset” button until it clicks.
Defective Control Board. Replace control board.
Defective High Temperature Cutout Switch. Replace
high temperature cutout switch.
COMPRESSOR WILL NOT TURN ON
Manual Bypass Switch On Control Board Is In The
“Elec”Position. Switch manualbypassswitchto the“HP”
position.
Ambient Conditions Outside Heap Pump’s Operating
Range. Heat pump designed to operate in ambient con-
ditions above freezing.
Wiring May Be Incorrect. Verify wiring with wiring dia-
gram.
HIGH TEMPERATURE CUTOUT
SWITCH ACTIVATED
DefectiveUpper OrLowerTemperature Sensors. Replace
temperature sensor(s).
Defective High Temperature Cutout Switch. Replace
high temperature cutout switch.
Defective Control Board. Replace control board. (See
warranty.)
Wiring Of Upper Or Lower Temperature Sensor May
Be Incorrect. Verifywiring withwiring diagram.
Stacking. See “Stacking” on page 10.
EVAPORATORFROSTINGOR ICING
Defective Evaporator Temperature Sensor. Replace
evaporatortemperaturesensor.
3 Mos. 6 Mos. 9 Mos. 1 Yr.
Checkfor leaking or damaged
water piping xxxx
Checkfor proper ground
connection and frayed or loose xxxx
Checkfor presence offlammable
materials in the installation area xxxx
Drain and flush tank x x
Checkanode rod x x
Clean air filter x x
WATTER$AVER INSPECTION
Action Every

[email protected]
ECRInternational 13
EVAPORATOR FROSTING OR ICING (continued)
Loss Of Refrigerant Charge/Leak In Heat Pump Sys-
tem. Repairleak andreprocess heat pumpsystem with16
oz.(.47 liters)of R134A.(See warranty.)
Defective Thermoexpansion Valve (TXV). ReplaceTXV.
(SeeWarranty.)
PoorAir Flow. Ensureoperation of bothfans,verifyevapo-
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 condi-
tions greater than 90° F (32.2° C).
T&P VALVE DRIPPING
System Pressure Too 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.
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.
INSUFFICIENT HOT WATER (continued)
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. Replaceupperelec-
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. Switchmanual bypassswitchto the “HP”
position.
Ambient Conditions Outside Of Operating Range.
Move water heater to more suitable location.
Lower Tank Heat Is Called For Within Six Minutes OfA
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. Switchmanual bypassswitch 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.

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 14
!!
HEATINGELEMENTREPLACEMENT
WARNING
Heatingelementremovaland replacementinvolvesthe
disconnectionofelectrical wiring. Thefollowingproce-
dures must only be performed by a qualified service
technician.
The Watter$aver Heat Pump Water Heater is factory
equippedwith a 4500 watt heating element that requires a
30 amp circuit breaker. For installations that don't have an
existing30ampcircuitforthewaterheater,ECRInternational
offers a 3500 watt element kit* that will allow the use of a
20amp circuit breaker. Voltage/wattage rating information
canbe foundon the flangeor terminalblock of theelement
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
andFlushing.”
3. Remove the access cover and fold the insulation
outwardandawayfrom theheaterelement(s).Remove
the plastic thermostat cover from the thermostat,
making sure to disengage the attachment point from
thethermostat.
4. Disconnect the electric wires from the heating
element(Figure 8)and remove thescrew-in elements
by turning the element counterclockwise with a 1½”
socket wrench. Remove the existing gasket.
Figure 8 DisconnectingElectric Wires Fromthe
HeatingElement
Screws Elements
Wires
Figure 9 ReplacingThe Heater Element
Spud
High Temperature Cutout Switch
Screw-In Element
Gasket
Holding Bracket
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.
6.Makesure thereplacementelementhas thecorrect
voltage and wattage rating. Position the new gasket
on the element and insert it into the water heater tank
(Figure9). Tightenthe element byturning itclockwise
until secure.
7.Closethedrainvalve.Openallhotwaterfaucetsand
allow the tank to fill completely with water. To purge
thelines ofany excess airand sediment,keep the hot
water faucet open for 3 minutes after constant flow of
wateris 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.
10. Replace the plastic thermostat cover, insulation,
and the access cover(s).
11. Makecertainthe tankis filledwith water. Applying
electric current to heater elements not submerged in
water will destroy them.
12. Restore the electric power supply to the water
heater.

[email protected]
ECRInternational 15
WATTER$AVER SPECIFICATIONSANDPERFORMANCE
MEA#067-01-E
MassachusettsApproval #P1-0804-30
EF
Rating First Hour Rating Nominal Output Noise Level Height Weight Diameter Capacity Working
Pressure Refrigerant Charge
61.8 gal 5100 Btuh 60" 180 lbs. 22.25" 50 gal 16 oz.
(233.9 l) (1310.4 kc) (152.4 cm) (81.65 kg) (56.52 cm) (189.3 l) (.5 l)
2.4 60 dB R-134A
WATTER$AVER PHYSICAL PROPERTIES AND PERFORMANCE
150 PSIG
Volts Hz Phase Breaker MCA
208/240V 60/50 1 30 Amps* 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, ECRInternational offers a 3500 watt element kit
that will allow the use of a 20 amp circuit breaker.
WATTER$AVER ELECTRICAL SPECIFICATIONS

Made In Rome, NY, USA
Watter$aver Heat Pump Water Heater 16
WATTER$AVERCOMMONREPLACEMENTPARTS
TemperatureSensor
Connections on Control
Description
1 240-0817 24"Fan Cord
2 240-3192 230VHPWH Fan
3 240-3653 High Temperature CutoutSwitch
4 240-3289 Control Board Support (Not Shown)
240-4177 Control Board (60 Hz)
240-4248 Control Board (50 Hz)
6 240-3665 Upper ElementCover
7 240-3645 4500 WattElectrical Element
8 240-3646 ElementGasket
9 240-3647 Dip Tube (NotShown)
10 240-3648 Temperature & Pressure ReliefValve (T&P Valve)
11 240-3556 Temperature Controller
12 240-3659 Access Door
13 240-3644 Anode Rod (NotShown)
14 240-3229 Evap Temperature Sensor (NotShown)
15 240-3770 Discharge Temperature Sensor(NotShown)
16 240-3771 Upper Tank Temperature Sensor (Not Shown)
17 240-3772 Lower Tank Temperature Sensor (Not Shown)
240-3650 Drain Valve
240-4670 Drain Valve (Brass)
19 240-3557 Temperature Controller Knob
20 109-4279 FrontTop Cover
21 109-4280 Rear Top Cover
22 N/A Elec/HP Toggle Switch
23 550-1119 Watter$aver CMS Kit(Optional)
24 550-1140 3500 WattHeating ElementKit(Optional)
NOTE: For inquiries on parts not listed, please contact the factory.
WATTER$AVER COMMON REPLACEMENT PARTS
Part Number
5
18