HTP Everlast Whole Home 18 User manual

272 Duchaine Blvd.
New Bedford, MA 02745
www.htproducts.com
Installation
Start-Up
Maintenance
Parts
Warranty
18, 24, 27, and 36kW Models
This manual must only be used by a qualied installer / service technician. Read all instructions in this
manual before installing. Perform steps in the given order. Failure to do so could result in substantial
property damage, severe personal injury, or death.
The manufacturer reserves the right to make product changes or updates without notice and will not be
held liable for typographical errors in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead
by weight as required by the Safe Drinking Water Act, Section 1417, and are certied as such by IAPMO.
Use and Care Manual
California Proposition 65 Warning: This product contains chemicals known to the State of California to
cause cancer, birth defects, or other reproductive harm.
Everlast
Whole Home
Electric Tankless Water Heaters
115 F
o

2
EN
The following dened terms are used throughout this manual to bring attention to the presence of hazards of
various risk levels or to important product information.
DANGER indicates an imminently hazardous situation which, if not avoided, will result in serious personal injury
or death.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in personal injury or
death.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in moderate or minor
personal injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTICE is used to address practices not related to personal injury.
Foreword
This manual is intended to be used in conjunction with other literature provided with the water heater. This
includes all related control information. It is important that this manual, all other documents included in this
system, and additional publications be reviewed in their entirety before beginning any work.
Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code
authorities, and utility companies which pertain to this type of water heating equipment.
Authority Having Jurisdiction (AHJ) – The AHJ may be a federal, state, local government, or individual such as a
re chief, re marshal, chief of a re prevention bureau, labor department or health department, building ocial
or electrical inspector, or others having statutory authority. In some circumstances, the property owner or his/
her agent assumes the role, and at government installations, the commanding ocer or departmental ocial
may be the AHJ.
NOTE: The manufacturer reserves the right to modify product technical specications and components without
prior notice.
For the Installer
This water heater must be installed by qualied and licensed personnel. The installer should be guided by the
instructions furnished with the water heater, and by local codes and utility company requirements.
Installations Must Comply With:
Local, state, provincial, and national codes, laws, regulations, and ordinances.
The latest version of the National Electrical Code, NFPA No. 70.
Table of Contents
Part 1 - General Safety Information 3
A. When Servicing the Water Heating System 4
B. Heater Water 4
C. Freeze Protection 4
D. Water Temperature Adjustment 4
Part 2 - Prepare the Water Heater 5
A. Locating the Water Heater 5
B. Water Chemistry Requirements 6
C. Technical Specications and Dimensions 7
Part 3 - Installation Instructions 7
A. Wall Mounting the Water Heater 7
B. Plumbing 8
C. Temperature and Pressure Relief 9
D. Scalding 9
E. Filling the Heater 10
Part 4 - Electrical Connection 10
Part 5 - Installation Checklist 11
Part 6 - Operation 12
A. User Interface / Controls 12
B. Start-Up 12
Part 7 - Maintenance 12
A. Removing the Cover 13
B. Draining the Heater 13
C. Removing a Heating Element 13
D. Descaling the Heating Element 13
Part 8 - Troubleshooting 14
A. Resetting the High Limit Switch 15
B. Checking Thermostat Operation 16
C. Changing the Heating Element 16
D. Changing a Triac 16
Part 9 - Replacement Parts 17
Limited Warranty 18
Customer Installation Record Form 20

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Part 1 - General Safety Information
This water heater is approved for indoor installations only and is not intended for use as a pool heater. Heater
must have room for service: 6” front and sides, and 12” top and bottom are minimum recommended service
clearances. (A combustible door or removable panel is acceptable front clearance.) This water heater has been
approved for closet installation. Install the water heater in a location where a leak will not result in damage to the
surrounding area. If such a location is not available, install an auxiliary drain pan.
NOTE: Please keep any ammable materials at least 24” (609.6mm) away from the water heater and hot outlet
pipe.
NOTE: Obey all local codes. Obtain all applicable permits before installing the water heater.
NOTE: Install all system components and piping in such a manner that does not reduce the performance of any
re rated assembly.
IMPORTANT SAFETY INSTRUCTIONS
When using electrical appliances, basic safety precautions to reduce the risk of re, electric shock, or injury to
persons should be followed, including:
1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.
2. This water heater must be grounded.
3. Install or locate this water heater only in accordance with the provided installation instructions.
4. Use this water heater only for its intended use as described in this manual.
4. This heater has more than one power supply connection point. Never attempt to install, clean, inspect or
repair, disassemble, or service the heater without rst shutting o all power to the unit by means of the circuit
breaker on the main electrical panel.
5. For power supply connection use 8/2 AWG wires or larger, suitable for at least 194oF (90oC).
6. The heater must be connected to a dedicated circuit breaker on the main electrical panel.
7. The plumbing installation must be completed before the electrical installation.
8. The plumbing installation requires metal pipes or reinforced hoses that can withstand pressure up to 145 psi.
9. To ensure proper operation, the water supply ow rate must be at least 0.5 gpm.
10. Do not install the heater where it may be subjected to direct sunlight, rain, splashing water, or freezing
temperatures.
11. Before connecting the unit to a public power network, consult the local power supply authority to ensure
the power network meets the stated requirements.
12. Do not operate this water heater if it has damaged wiring, if it is not working properly, or if it has been
damaged or dropped.
13. This water heater should be serviced only by qualied service personnel. Contact the water heater installer
or a qualied service agency for examination, repair, or adjustment.
SAVE THESE INSTRUCTIONS
Installer - Read all instructions in this manual before installing. Perform steps in the given order.
User - This manual is for use only by a qualied heating installer / service technician. Have this water heater
serviced / inspected annually by a qualied service technician.
FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY
DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
NOTE: If the water heater is exposed to the following, do not operate. Immediately call a qualied service
technician.
1. Fire
2. Damage
3. Water
Failure to follow this information could result in property damage, severe personal injury, or death.
DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call
a qualied service technician. The water heater MUST BE replaced if it has been submerged. Attempting to
operate a water heater that has been submerged could create numerous harmful conditions, such as a potential
gas leakage causing a re and/or explosion, or the release of mold, bacteria, or other harmful particulates into
the air. Operating a previously submerged water heater could result in property damage, severe personal injury,
or death.
NOTE: Water heater damage due to ood or submersion is considered an Act of God, and IS NOT covered under
product warranty.

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High heat sources (sources generating heat 100oF / 37oC or greater, such as stove pipes, space heaters, etc.) may
damage plastic components of the water heater as well as plastic vent pipe materials. Such damages ARE NOT
covered by warranty. It is recommended to keep a minimum clearance of 8” from high heat sources. Observe
heat source manufacturer instructions, as well as local, state, provincial, and national codes, laws, regulations
and ordinances when installing this water heater and related components near high heat sources.
A. When Servicing the Water Heating System
To avoid electric shock, disconnect electrical supply before performing maintenance.
NOTE: When inquiring about service or troubleshooting, reference the model and serial numbers from the water
heater rating label.
To avoid severe burns, allow water heater and associated equipment to cool before servicing.
B. Heater Water
Do not use petroleum-based cleaning or sealing compounds in a water heating system. Gaskets and seals in the
system may be damaged. This can result in substantial property damage.
Do not use “homemade cures”or“patent medicines”. Damage to the water heater, substantial property damage,
and/or serious personal injury may result.
C. Freeze Protection
NOTE: Consider piping and installation when determining heater location.
Failure of the water heater due to freeze related damage IS NOT covered by product warranty.
NEVER use any toxic chemical, including automotive, standard glycol antifreeze, or ethylene glycol made for
hydronic (non-potable) systems. These chemicals can attack gaskets and seals in water systems, are poisonous
if consumed, and can cause personal injury or death.
Be sure to disconnect electrical power before performing service. Failure to do so could result in electrical shock,
property damage, serious personal injury, or death.
Do not use this water heater for anything other than its intended purpose (as described in this manual). Doing
so could result in property damage and WILL VOID product warranty.
D. Water Temperature Adjustment
The water heater thermostat has been pre-set at
the factory at a temperature equal to or below
125oF (51.7oC) according to UL certication. If the
water heater is going to have a set temperature
above 120oF, it is recommended to use an ASSE
1017 rated mixing valve to avoid severe burns or
death from scalding temperatures.
Approximate Time / Temperature Relationships in Scalds
120oF More than 5 minutes
125oF 1 1/2 to 2 minutes
130oF About 30 seconds
135oF About 10 seconds
140oF Less than 5 seconds
145oF Less than 3 seconds
150oF About 1 1/2 seconds
155oF About 1 second
Table 1 - Approx. Time /Temperature Relationships in Scalds
NOTE: After adjusting the water temperature at
the thermostat, allow the water heater enough
time to heat the water to temperature. After
The manufacturer cannot be responsible for damages caused by improper installation or by failure to follow the
instructions in this manual.
If the ambient temperature falls below 32oF (0oC), protect the heater from potential damage by shutting o
power to the unit by means of the dedicated circuit breaker on the main electrical panel. Open a faucet slightly
to cause water to ow continuously through the device at a very low rate, without heating. Restore power to the
unit when temperature conditions allow.
If the water freezes inside the unit, it can cause damage that is not covered by warranty. If you suspect water has
frozen within the unit, do not turn it on until you are certain the frozen water has melted and there are no leaks in
the unit. It is recommended to contact a qualied electrician or customer service in this situation.
the water heater has stopped heating, use
a thermometer to measure the water temperature at a hot water outlet in the structure. The recommended
temperature setting is 118oF.

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UNCRATING THE WATER HEATER - Any claims for damage or shortage in shipment must be led immediately
against the transportation company by the consignee.
Households with small children, disabled, or elderly persons may require a 120oF or lower temperature setting
to prevent severe personal injury or death due to scalding.
Part 2 - Prepare the Water Heater
Remove all sides of the shipping crate to allow the heater to be moved into its installation location.
COLD WEATHER HANDLING - If the water heater has been stored in a very cold location (BELOW 0oF) before
installation, handle with care until the components come to room temperature. Failure to do so could result in
damage to the water heater.
A. Locating the Water Heater
This water heater is certied for indoor use only. DO NOT INSTALL OUTDOORS. Outdoor installations ARE NOT
covered by warranty. Failure to install the water heater indoors could result in property damage, severe personal
injury, or death.
All water heaters eventually leak. Locate the water heater where any leakage from the relief valve, related
piping, tank, or connections will not result in damage to surrounding areas or lower oors of the building.
Any water heater should be installed in such a manner that if it should leak the resulting ow of water will
not cause damage to the area in which it is installed. National Plumbing codes require a drain pan for any
water heater installation. Failure to install one is the sole responsibility of owner and/or installer. Reference UPC
2000 (Uniform Plumbing Code) Section 510 - Protection from Damage or IPC 200 (International Plumbing code)
Section 504 - Safety Devices. Leakage damages ARE NOT covered by warranty.
In addition, water leak detection devices and automatic water shuto valves are readily available at plumbing
supply houses. IT IS HIGHLY RECOMMENDED BY THE MANUFACTURER TO INSTALL WATER LEAK DETECTION
DEVICES AND AUTOMATIC SHUTOFF VALVES IN ANY WATER HEATER INSTALLATION WHERE A LEAKAGE OF
WATER COULD RESULT IN PROPERTY DAMAGES.
1. Installation Area (Mechanical Room) Operating Conditions
• Ensure ambient temperatures are higher than 32oF / 0oC and lower than 104oF / 40oC
• Avoid continuously high levels of humidity, moisture, or dust, or an area that may be splashed with water or
other liquids. DO NOT install under water pipes or air conditioning lines that might leak or condense onto
the water heater.
• Never close existing ventilation openings
NOTE: When installing in a minimum clearance location, it may not be possible to read or view some product
labeling. It is recommended to make note of the water heater model and serial number.
NOTE: A combustible door or removable panel is acceptable front clearance.
NOTE: Keep water heater and hot outlet piping securely out of the reach of children to prevent tampering with
the controls or contact with an extremely hot pipe.
The service life of the water heater’s exposed metallic surfaces, such as the junction box, is directly inuenced
by proximity to damp and salty marine environments. In such areas higher concentration levels of chlorides
from sea spray coupled with relative humidity can lead to degradation of water heater components and cause
premature water heater failure. Such failures ARE NOT covered by warranty.
Failure of the water heater or components due to incorrect operating conditions IS NOT covered by product
warranty.
Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk. Ensure
that the installation location adheres to the information included in this manual. Failure to do so could result in
property damage, serious personal injury, or death.

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2. Choose a location for the water heater as centralized to the piping and electrical system as possible. Also, locate
the water heater and domestic water piping where it will not be exposed to freezing temperatures. All piping
should be insulated. Additionally, place the water heater so that the drain, controls, and inlets/outlets are easily
accessible.
NOTE: To save on heating costs and improve energy eciency keep the distance between the water heater and
xtures to a minimum to reduce heat loss from excess piping and keep friction loss at a minimum. Ensure all
water heater piping is properly insulated to minimize heat loss.
NOTE: If you do not provide the minimum recommended service clearances it might not be possible to service
the water heater without removing it from the space.
NOTE: In the State of California, the water heater must be braced, anchored, or strapped to avoid moving during
an earthquake. Contact local utilities for code requirements in your area. Visit http://www.dsa.dgs.ca.gov or call
1-916-445-8100 and request instructions.
3. Check area around water heater. Remove any combustible materials, gasoline, and other ammable liquids.
This water heater must not be located near ammable liquids such as gasoline, butane, liqueed propane,
adhesives, solvents, paint thinners, etc., as the controls of this water heater could ignite these vapors and cause
an explosion resulting in property damage, severe personal injury, or death.
This water heater must be installed upright in the vertical position as described in this manual. DO NOT attempt
to install this water heater in any other orientation. Doing so will result in improper water heater operation and
property damage, and could result in serious personal injury or death.
4. If the water heater is to replace an existing water heater, check for and correct any existing system problems
such as:
• System leaks
• Location that could cause the system and water heater to freeze and leak
5. This water heater must be installed vertical on a level surface.
B. Water Chemistry Requirements
Chemical imbalance of the water supply may aect eciency and cause severe damage to the appliance and
associated equipment. Water quality must be professionally analyzed to determine whether it is necessary
to treat the water. Various solutions are available to adjust water quality. Adverse water quality will aect the
reliability of the system. In addition, operating temperatures above 135oF will accelerate the build-up of lime
scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or
other chemical imbalance IS NOT covered by the warranty.
The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminates, and meet the
manufacturer’s requirements. It is up to the installer to ensure the water does not contain corrosive chemicals or
elements that can damage the heat exchanger. Potable water is dened as drinkable water supplied from utility
or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the water
contains contaminants higher than outlined by the EPA and the manufacturer, water treatment is recommended
and additional, more frequent maintenance may be required. If you suspect that your water is contaminated in
any way, discontinue use of the appliance and contact an authorized technician or licensed professional.
Water Chemistry Requirements
pH 6.5 - 8.5 Chloride Less than 250 mg/L
Total Dissolved Solids (TDS) Less than 500 mg/L Copper Less than 1.0 mg/L
Free CO2 Iron Less than 0.3 mg/L
Total Hardness Less than 200 mg/L Manganese Less than 0.05 mg/L
Aluminum Less than 0.2 mg/L Zinc Less than 5 mg/L
*NOTE: To promote appliance service life, it is strongly recommended to follow the maintenance procedures in
this manual.
Table 2 - Water Chemistry Requirements

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EN
Failure of electric elements due to lime scale build-up on the heating surface, low pH, or other imbalance IS NOT
covered by the warranty.
C. Technical Specications and Dimensions
Model *Wattage (kW) Max Amperage Required Breaker(s) Required Wire Size
18kW 18 75 3 x 30A Double Pole 3 x 10 AWG w/ Ground
24kW 24 100 3 x 40A Double Pole 3 x 8 AWG w/ Ground
27kW 27 112.5
36kW 36 150 4 x 40A Double Pole 4 x 8 AWG w/ Ground
Technical Data All Models
Minimum Water Flow to Activate
Unit 0.5 gpm
Working Pressure 7 - 150 psi (0.5 - 10 bar)
Tested Pressure 290 psi (20 bar)
Water Connections 3/4”NPT
Elements 18 - 27kW 2
36kW 3
Dimensions 18 - 27kW 20.7”(526 mm) Width x 13.3”(339 mm) Height x 4.5” (114 mm) Depth
36kW 25”(636 mm) Width x 13.3”(339 mm) Height x 4.5”(114 mm) Depth
Weight (Empty) 18 - 27kW 12.17 lb (5.52 kg)
36kW 16.23 lb (7.36 kg)
Temperature Range 86 - 122oF (30 - 50oC)
Table 3 - Technical Specications - *Wattage based on maximum voltage.
Part 3 - Installation Instructions
A. Wall Mounting the Water Heater
1. Remove the two (2) screws attaching the water heater front cover. Remove the front cover. (Figure 1.)
• Do not install the unit above electrical boxes or junctions.
• The mounting surface must be solid and secure.
2. Position the unit on the mounting surface. Ensure the unit is level. Mount the unit to the wall with four (4)
screws of at least one (1) inch (25.4mm) in length at the marked points. See Figure 2.
Use screws suitable for the wall material and the weight of the water heater. Failure to do so could result in
property damages and damage to the water heater. Such damages ARE NOT covered by product warranty.
• The appliance must be mounted horizontally, with water inlets and outlets at the bottom. See Figure 3.
This water heater must be installed upright in the vertical position as described in this manual. DO NOT attempt
to install this water heater in any other orientation. Doing so will result in improper water heater operation and
property damage, and could result in serious personal injury or death.
Temperature Rise Δt (oF) Flow Rate (GPM)
18kw 24kw 27kW 36kW
35 3.51 4.68 5.26 7.02
45 2.73 3.64 4.09 5.46
77 1.59 2.12 2.39 3.19
• Pull gently on the water heater to ensure that it is properly mounted.

8
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Figure 1 - Removing the Cover Figure 2 - Water Heater Mounting Points
Figure 3 - DO NOT INSTALL UNIT UPSIDE DOWN Figure 4 - Inlet Pre-Filter
115 F
o
18 / 27kW Model 36kW Model
DO NOT INSTALL UNIT UPSIDE DOWN
OR ON ITS SIDE
18 / 27kW Model
36kW Model
Water
Pre-Filter
Water Pre-Filter
18 / 27kW Model
36kW Model
B. Plumbing
It is mandatory that all plumbing be done in accordance with federal, local, and
state plumbing codes and practices. Failure to properly install the water heater WILL
VOID the warranty. It is also necessary to use both thread tape and pipe dope on all
mechanical plumbing connections.
Install unions on the hot and cold water connections to easily disconnect the water
heater for servicing. See Figure 6.
• Connect the water inlet line to the entry point of the heater (right side inlet),
and connect the outlet line to the water outlet. Use a line that can withstand
a minimum pressure of 116 psi (8 bar). Using any other type of line will cause
damage. All water pipes within three (3) feet of the unit’s water inlet and outlet
must be rated for high temperature applications of 150oF (66oC) minimum.
Figure 5 - DO NOT
SOLDER TO THE UNIT
Do not solder any piping
to the unit’s connection
points.
• It is recommended to use exible water lines. See Figure 4.
• The maximum operating water pressure of this water heater is 150 psi / 10 bar. Residential plumbing
systems with unstable pressure or pressure above 73 psi require the application of a pressure stabilizer
valve, set to 58 - 73 psi.
• Do not install the appliance with water inlets and outlets at the top. See Figure 3.
• Before connecting pipes to the water heater, it is highly important to ush the lines to eliminate all residue
and debris from the inlet and outlet lines.
Do not apply heat to the Hot or Cold water heater connections. See Figure 5. If sweat connections are used,
sweat tubing to the adapter before tting adapter to the water connections on the heater. Any heat applied to
the water heater connections will permanently damage the water heater. Use two wrenches when tightening
water piping at heater. Use one wrench to prevent the heater inlet or outlet line from turning. Take care not to
over tighten. Damages due to improper installation practices ARE NOT covered by warranty.
Failure of the water heater due to lime scale build-up on the heating surface, low pH, or other imbalance IS NOT
covered by the warranty.

9
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Figure 6 - Installation Detail
COLD WATER INLET
HOT WATER OUTLET
CHECK VALVE
BALL VALVE
AUTOMATIC WATER
SHUT-OFF VALVE
UNION
WATER LEAK
DETECTION
SENSOR
NOTES:
1. Minimum pipe size should
match connection size. Upsize
pipe accordingly if greater ow
is required.
2. Drains and check valve
between will assist in purging
air from system.
3. These drawings are meant
to demonstrate system piping
only. The installer is responsible
for all equipment and detailing
required by local codes. In
Massachusetts, you must install
a vacuum relief valve per 248
CMR.
4. A temperature and pressure
(T&P) relief valve is not required
for most installations, but may
be required to meet local,
state, or provincial codes. If
codes require a T&P valve,
install according to code and
manufacturer instructions.
5. Mixing valve applications are recommended to help prevent scalding.
6. It is highly recommended by the manufacturer to install water leak detection devices and automatic shuto valves in
any water heater installation where a leakage of water could result in property damages.
C. Temperature and Pressure Relief
This tankless water heater is equipped with both computer temperature control and mechanical auto resetting
high limit switches for high limit temperature protection. This product does not use a storage tank and a
temperature pressure relief valve (T&P) is not required for most installations. UL Standard 499 does NOT require
that a pressure relief valve be used.
However, a T&P valve may be required to meet installation codes in your area. If one is required, install the valve
in accordance with local codes. Ensure that it operates correctly and that air is purged from the valve before using
the water heater. When connecting to ex or high temperature CPVC pipe, it is recommended that a T&P valve
be used for added safety.
NOTE: Installations in the Commonwealth of Massachusetts and State of Kentucky require a pressure relief valve.
Please check local installation codes for any special requirements.
Do not thread a cap or plug into a relief valve or relief valve line under any circumstances! Explosion and
property damage, serious injury, or death may result.
An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve is recommended in installations servicing
disabled or elderly persons, or children. Mixing valves do not eliminate the risk of scalding.
To avoid scalding:
• Set the water heater set point temperature as low as possible.
• Feel water before bathing or showering.
• If thermostatic valves are required, use devices specically designed for such purpose. Install these devices
in accordance with instructions provided by the manufacturer.
Failure to install a temperature limiting or mixing valve and follow these instructions could result in property
damage, severe personal injury, or death due to scalds.
D. Scalding
This water heater can deliver scalding water. Be careful whenever using hot water to avoid scalding injury. Certain
appliances such as dishwashers and automatic clothes washers may require increased water temperatures. By
setting the thermostat on this heater to obtain the increased water temperature required by these appliances
you may create the potential for scald injury.
To protect against injury, install a mixing valve in the water system. This valve will reduce point of use discharge
temperatures by mixing cold and hot water in branch supply lines. Such valves are available from your local
plumbing supplier.

10
EN
E. Filling the Heater
• Make certain any drain valves in the system are completely closed.
• Open the shut-o valve in the cold water supply line.
• Open the hot water faucets to allow air to vent from the heater and
piping.
• Allow sucient time for the heater to completely ll with water.
• Check for and repair any leaks.
NOTE: If you detect a water leak from the water heater at this point, turn o
the water supply at the main shut-o valve and contact Customer Service.
When lling the water heater, open a hot water tap to release air in the
tank and piping. The tank must be full of water before the heater is turned
on. Failure to ensure the water heater is full before turning it on could
result in damage to the water heater and other property damages. Such
damages ARE NOT covered by water heater warranty.
Part 4 - Electrical Connection
Tank must be full of water before the power is turned on. The heating element will be damaged if energized for
even a short time while tank is dry. Failures due to“dry-ring”ARE NOT covered by warranty.
This water heater must be installed in accordance with all applicable local, state, provincial, and national electrical
codes. The heater must be connected to dedicated circuit breakers on the main electrical panel.
As with all electrical appliances, its crucial to rst shut o all power to the unit directly at the fuse or breaker box
before attempting to install or repair this water heater. Ensure that all breakers are shut.
Failure to disconnect the power from the water heater before attempting to install or repair it will result in
property damage, severe personal injury, or death.
All wiring (wire gauge) as well as circuit protection (breakers) must comply with the National Electrical Code
(NED) in the USA or the Canadian Electrical Code (CEC) in Canada, and should be done by a qualied licensed
electrician or the local electric utility. Failure to do so could result in property damage and/or personal injury
and void the product warranty.
Be sure to ground the water heater. Failure to do so could result in property damage, severe personal injury, or
death.
NOTE: In Canada, the CEC generally requires that all supply wires and corresponding circuit protection used for
domestic hot water heating and hydronic heating applications be sized to a minimum of 125% of the maximum
current rating of the heater (kindly check the heater specications below for details).
The voltage requirement and dedicated maximum amperage load for the heater is specied on the water
heater rating label. Consult your local power company to determine if your electrical service is adequate for the
additional load of the heater.
NOTE: 18 - 27kW models require 3 sets of wire and ground; 36kW models require 4 sets of wire and ground. See
Wiring Diagrams for additional information.
1. Take each wire pair and connect them to one breaker (see Wiring Diagrams). Ensure that each breaker
is connected to one black wire and one red wire. Ensure the power to the unit is shut o by means of the
dedicated circuit breakers in the main electrical panel.
2. A suitable wire gauge which meets all applicable electrical codes for the size of the breakers should be used.
The correct set of power cable wires should be run from the circuit breakers in the main electrical panel to the
water heater. Connect the power cable to the terminal block within the water heater.
3. Each incoming circuit requires a separate ground connector.
4. DOUBLE CHECK the electrical connections to ensure their correctness as well as the tightness and secureness
of wire connections. Its important to conrm that the correct breaker size and wire gauge has been used
Table 1 details the relationship of water temperature and time with regard
to scald injury and may be used as a guide in determining the safest water
temperature for your applications.