EemaX HotMAx HM013240 Service manual

Eemax, Inc.™Electric Tankless Water
Heaters
INSTALLATION INSTRUCTIONS & OWNER’S MANUAL
HotMax™
HM013240
IMPORTANT SAFETY INFORMATION
When installing or using any high voltage electrical appliance, basic safety precautions should always be
followed. Under no circumstance should you attempt to clean, install, inspect, repair, disassemble or
otherwise service this water heater, without first shutting off all power to the unit directly at the circuit
breaker box. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
THIS PRODUCT SHOULD BE INSTALLED BY A QUALIFIED ELECTRICIAN AND A QUALIFIED PLUMBER IN
ACCORDANCE WITH ALL NATIONAL, STATE, PROVINCIAL AND LOCAL ELECTRICAL & PLUMBING CODES.
PLEASE READ THESE INSTRUCTIONS THOROUGHLY AND COMPLETELY PRIOR TO INSTALLATION & USE.
FAILURE TO DO SO COULD CAUSE PROPERTY DAMAGE, SERIOUS INJURY, OR DEATH.
This manual should be given to the owner after installation and should be retained for future reference.
Tested and certified by the Water Quality Association against NSF/ANSI 372 for lead free
compliance.
Recognize this symbol as an indication of Important Safety Information!
DO NOT destroy this manual. Please read carefully and keep it in a safe place for future reference

2
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING
DANGER!
WATER TEMPERATURE SAFETY SETTING
Safety and energy conservation are factors to be considered when selecting
the water temperature setting of water heater’s thermostat. This product is
subject to water temperatures above 120°F (49°C) which can cause severe
burns or death from scalding. Be sure to read and follow the warnings outlined
on the label pictured below. This label is also located on the water heater near
the thermostat access panel.
Notice: To comply with safety regulations the
thermostat is set at 140°F before the water heater is
shipped from the factory.
The chart above shows water temperatures to 155°F
(68°C). This unit is subject to water temperatures up
to 212°F (100°C) which can produce a serious burn
instantly.
DANGER HotMax is not intended for use by small
children, disabled, or elderly persons unless given
instructions or supervision by a person responsible for
their safety. To reduce the risk of injury, children
should not play with the hot water tap and should be
closely supervised when the appliance is in use.
Please consult Section 9 to learn more about setting
HotMax temperature. Rotate clockwise for higher
temperature up to 200°F (93°C) or rotate
counterclockwise for cooler temperature as low as
140°F (60°C)

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ABOUT YOUR HOTMAX
Congratulations on the purchase of your HotMax! You have purchased the most technologically-advanced
electric tankless water heater on the market today designed to produce an endless amount of near boiling hot
water instantly.
Your new electric tankless water heater features advanced water flow rate and temperature sensors designed to
modulate power to the heating elements to maintain a user-selected output water temperature between 140°F
(60°C) and 200°F (93°C) (subject to incoming water temperature).
To get the best near boiling hot water dispensing performance and energy savings from your electric tankless
water heater, it is important that it be installed in accordance with our instructions and the electrical and
plumbing codes applicable to your area, and that you read this manual thoroughly for important operating
instructions and tips.
If you have questions at any time, please contact us directly at:
Manufacturer’s National Service Department
400 Captain Neville Dr. Waterbury, CT 06705
Phone: 1-(800)- 543-6163 Email: [email protected]
CONTENTS
ABOUT YOUR HotMAX .........................................................................................................................3
CONTENTS ............................................................................................................................................3
1- BEFORE INSTALLATION.....................................................................................................................4
2- SELECTING A LOCATION TO INSTALL................................................................................................4
3- MOUNTING YOUR WATER HEATER..................................................................................................5
4- DISPENSER/PLUMBING INSTALLATION............................................................................................7
5- ELECTRICAL INSTALLATION ............................................................................................................10
6- GENERAL OPERATING INSTRUCTIONS ...........................................................................................12
7- MAINTENANCE ...............................................................................................................................13
8- TROUBLE SHOOTING GUIDE...........................................................................................................14
9- USER INTERFACE ............................................................................................................................15

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1- BEFORE INSTALLATION
PLEASE READ THESE INSTRUCTIONS THOROUGHLY AND COMPLETELY PRIOR TO INSTALLATION & USE.
FAILURE TO FOLLOW INSTRUCTIONS COULD CAUSE PROPERTY DAMAGE, SERIOUS PERSONAL INJURY, OR
DEATH.
By installing this product, you acknowledge the terms of the manufacturer’s warranty. Once the heater is
installed, do not return product to the place of purchase. If you have any questions regarding the warranty or
product return policies, please contact Manufacturer’s national service department at 1-[phone].
Inspect all components. The contents of your box should include the following components:
HotMax Unit
Dispenser & Hardware
oDecorative Washer with
O-Ring
oRubber Gasket
oWasher
oDispenser Nut
20” 4 mm Insulated Copper Tube
Ferrule x2
Nut x2
Recommended equipment for installation:
Electric Drill for Pre-Drilling Holes
#2 Phillips Bit
Philips Head Screwdriver
Flat Head Screwdriver
Tape Measure/Ruler
Boiler Drain (may be beneficial)
Adjustable Wrench
Pipe Cutter (may be benefical)
Pencil (used to mark measurements)
Needle-Nose Pliers (may be benefical)
Level
Metallic Drain & P-Trap (highly
recommended)
Small Tube Bender (may be beneficial)
2- SELECTING A LOCATION TO INSTALL
This product is designed to be installed indoors under a sink.
DO NOT install this product in a location where it may be subjected to freezing temperatures. If the water
inside your tankless water heater freezes, it can cause severe and permanent damage that is not covered
under your warranty.
DO NOT locate the water heater in a location that is difficult to access.
Make sure that the water heater and hot water outlet pipe are out of reach of children so they are unable to
tamper with the temperature controls or injure themselves by touching the hot water outlet pipe. The outlet
water pipe can get very hot.
This product does NOT require venting.
DO NOT install under water pipes or air conditioning lines that might leak or condense moisture that could
then drip onto the heater. Avoid installing your tankless water heater in a location prone to excessive humidity,
moisture, or dust, or in an area where it may be splashed with water or other liquids.
DO NOT install above electrical boxes or junctions.
CAUTION The water heater should not be located in an area where leakage will result in damage to the
area adjacent to it or to lower floors of the structure. Where such areas cannot be avoided, it is recommended
that a suitable catch pan, adequately drained, be installed under the water heater. Make sure to follow all code
requirements for such installations as required for your area. We recommend that you install a drip pan
(connected to a safe drain) below the water heater to avoid property damage in the unlikely event of a leak.

5
Alternatively, you may install an active water leak detector and shutoff valve designed to turn off your water
supply in the event that a leak is ever detected.
3- MOUNTING YOUR WATER HEATER
Your HotMax should be secured to the mounting surface with 4 screws
(minimum 1” (25.4mm) long) using the built-in mounting holes on the back
side of the heater (Figure 1). If using a pre-existing dispenser location, make
sure the heater is mounted within 20” of the dispenser fittings. Make sure
that the mounting surface is solid and secure, and ensure that the unit is
level prior to securing the screws. For maximum function and servicing, we
recommend that this product be installed in an upright position with the inlet
and outlet water connections at the top of the unit. Water connections
should be easily accessible under the sink so that the dispenser can be
secured and tightened to the heater.
Recommended Clearances for Safety and Service Maintence:
4” (101.6 mm) above
9” (228.6 mm) below
6” (152.4mm) in front and to the sides
DANGER Flammable materials should be kept at least 24” (609.6mm)
away from your water heater and the hot water outlet pipe.
Mounting Steps:
SHUT OFF ELECTRICITY ON YOUR CIRCUIT BREAKER BEFORE PROCEEDING TO ANY FURTHER
INSTALLATION STEPS.
Make sure there is an inlet water line that can supply 0.4 gpm to
0.6 gpm of continuous water flow to HotMax.
Close the water supply valve on the inlet water line before
installation.
Clear out any obstructions or possible hazards from under the sink
before installation.
Using the mounting template inside the packaging, select a
location for HotMax. Be sure to leave the proper clearances on all
sides according to the template.
Figure 1

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Notice: Before drilling any holes, manufacturer recommends dry fitting the installation to make sure the
proprietary copper tube reaches both the intended dispenser location and heater.
Pre-drill three holes in the locations specified on the mounting template (Figure 2).
DO NOT completely sink all three screws. Leave ¼” clearance to hang the unit. Remove the template
and hang the unit.
Figure 2
Sink
Cold Water
Line
Hot Water Line
Wire Connection

7
4- DISPENSER/PLUMBING INSTALLATION
Please follow all plumbing and dispenser instructions carefully. We recommend that this product be installed by
a licensed and qualified plumber in accordance with all applicable national, state, provincial, and local plumbing
codes.
DO NOT install HotMax with a different dispenser or outlet hot water pipe that is not included in
packaging.
DISPENSER INSTALLATION INSTRUCTIONS
STEP 1: Identify which hole in the sink basin will be used for the
new dispenser. The location for the dispenser must be within 20”
of HotMax and check to make sure there is sufficient clearance
for handles to be fully opened. It is recommended to dry-fit the
heater and dispenser connected by the proprietary hot water
tube to ensure that the tube is long enough to reach between
the two. The HotMax dispenser requires a 1.5 inch diameter hole
to be mounted in the sink basin or countertop.
NOTE: HotMax Dispenser can replace a sink side spray and hose
(Figure 3)
CAUTION If you have to drill through a sink or countertop, it is recommended to rent or purchase the
appropriate tools. If drilling into a surface other than stainless steel, consult a professional.
STEP 2: Remove components from packaging and connect the dispenser, proprietary outlet tube and fittings.
See plumbing installation for more details.
DO NOT pinch, break, or cut the proprietary outlet tubing. Be careful to not damage the fittings.
DO NOT overtighten compression fittings. Ensure all fittings are properly seated in the base of the dispenser
head.
DO NOT use pipe dope or Teflon Tape. Use of pipe dope or Teflon tape may void the warranty.
STEP 3: Insert the proprietary hot water outlet tube down
through the hole in the sink or countertop until the base of
the dispenser sits flush on the surface. Seal the dispenser
to the sink or countertop with an appropriate sealant
before proceeding with plumbing installation. Place the
gasket and washer over the threads of the dispenser base.
Hand tighten the dispenser nut until the dispenser, gasket
and washer are secured to the sink basin or countertop. The
dispenser should not be easily moved or twisted once
secured. Install Danger: Scald Warning label on the
backplash adjacent to the dispenser.
CAUTION This dispenser does NOT deliver cold water.
The dispenser only delivers near boiling hot water
that can range from 140°F –212°F (60°C –100°C).
Dispenser
Bottom of
sink basin /
countertop
Proprietary hot
water line
Figure 3
Dispenser
nut
Figure 4
Washer
Gasket

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PLUMBING INSTALLATION INSTRUCTIONS
STEP 1: Thoroughly flush and check that all water lines are free of debris. Tighten the proprietary 20” 4 mm
copper HOT WATER line that is connected to the dispenser to the OUTLET located on the left side of the heater
when facing HotMax. Use the supplied ferrule and nut.
STEP 2: Connect the COLD WATER supply line to the 3/8” INLET fitting on the right side when facing HotMax.
Properly seal all compression fittings. Be careful to not overtighten.
DO NOT use pipe dope or Teflon tape on any fittings connected to the unit.
DANGER Using a non-proprietary hot water outlet pipe could result in injury, expose the unit to leaks and
damage, or produce incorrect outlet water temperatures.
STEP 3: After tightening both fittings at the water heater, open the dispenser and let water run through the
heater for at least 2 to 3 minutes. This process purges all the air from the water lines and MUST be performed
prior to turning on the power at the unit. FAILURE TO FOLLOW THIS STEP CAN CAUSE PERMANENT DAMAGE
TO THE HEATING ELEMENTS. If any maintenance is performed on the water heater or the plumbing system that
may introduce air into the plumbing pipes, it is important to turn the power off to the water heater and purge
the air out of the lines before allowing the unit to power up.
STEP 4: Carefully inspect all connections, unions, and the pressure relief valve (if installed) for leaks.
STEP 5: TURN OFF THE DISPENSER BEFORE PROCEEDING TO ELECTRICAL INSTALLATION
Proprietary Hot
Water Copper Pipe
Cold Water Line
Dispenser
Recommended
Supply Shut Off
Valve
HotMax
Recommended
Boiler Drain

9
IMPORTANT NOTES:
1. We recommend a metallic brass drain, tailpiece and p-trap as plastic (PVC) cannot withstand
temperautres greater than 140 °F.
2. Do not solder any pipes with the unit connected to pipes –heat from soldering may damage the flow
sensor. Doing so will void the warranty.
3. This automatic tankless water heater is equipped with both computer-controlled and electro-
mechanical auto resetting thermostat switches for high-limited temperature protection. Since this
product does not use a storage tank, the use of 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
pressure relief valve in accordance with local codes and ensure that it operates correctly and that air is
purged from the valve prior to installing the water heater. When connecting to Flex or High
Temperature CPVC pipe, we recommend that a T&P valve be used for added safety.
Please note: Installations in the Commonwealth of Massachusetts and State of Kentucky require a
pressure relief valve. Please check your local installation codes for any special requirements.
4. The maximum system water pressure is 150 PSI (1035 kPA). Minimum operating water pressure 35 psi.
Optimum operating water pressure 45 to 80 psi. If the water pressure is higher than 80 psi, a pressure
reducing valve must be installed on the main incoming water supply line prior to installing the electric
tankless water heater.
5. Only install the proprietary hot water tube that is included between the dispenser and heater. During
installation, it is recommended that when connecting the inlet water pipe to the unit, make sure to use
a wrench to hold the unit’s connection, and another wrench to tighten, so that the flow sensor on the
unit will not be loosened or damaged. Serious internal damage to the water heater can occur if the inlet
or outlet connections are over tightened or if solder connections were made.
6. We recommend that a manual shut-off valve is installed on the inlet of the water heater so that there is
a convenient shut-off point available in the event that future maintenance or servicing is required. This
valve will aso be used to reduce the flow rate if necessary. It is extremely important to flush the lines to
eliminate all plumbing paste or residue in the lines caused by any welding or soldering before
connecting pipes to the water heater.
We recommend that all the water pipes or hoses within 3’(1m) of the inlet and outlet connections be rated for
high temperature applications with a 150°F (66°C) minimum.
CAUTION Do not use pipe dope or Teflon Tape on any compression fittings on the unit or outlet hot water
tube. Doing so may cause serious safety hazards or increase the risk of leaks.
WARNING CHECK FOR LEAKS BEFORE PROCEEDING TO ELECTRICAL INSTALLATION
WARNING This product is not reccomended for anything besides its intended use as described
in these instructions. Attachments not recommended by the manufacturer can cause safety
hazards.
WARNING VERIFY THAT YOUR GARBAGE DISPOSAL IS CAPABLE OF WITHSTANDING TEMPERATURES UP TO
200°F PRIOR TO DISPENSING THE HOTMAX INTO ANY DRAIN EQUIPPED WITH A GARBAGE DISPOSAL

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5- ELECTRICAL INSTALLATION
WARNING Manufacturer recommends that this product be installed by a licensed and qualified electrician
in accordance with all applicable national, state, provincial, and local electrical codes. As with all electrical
appliances, under no circumstances should you attempt to install, repair or disassemble this water heater
without first shutting off all power to the unit directly at the fuse or breaker box. Make sure to shut off all
breakers. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
All wiring (wire gauge) and circuit protection (breakers) must comply with the U.S. National Electrical Code (NEC)
in the USA, or the Canadian Electrical Code (CEC) in Canada. Failure to do so could result in property damage
and/or personal injury, and void your warranty. Note: The Canadian Electrical Code 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 (see heater
specifications below for details).
Before installing this product, ensure sufficient electrical power is available to handle the maximum amperage
load of the applicable heater.
IMPORTANT NOTES:
HotMax (13 kW) Recommended Wire Size:
6 AWG conductors
8 AWG ground
Manufactuer Recommends 240 VAC Single Phase
220 VAC may be used at a 15% reduction in power output
208 VAC may be used at a 20% reduction in power output
Please see electrical specifications by heater input and wiring diagram on the next page for additional
electrical information.
WARNING Hotmax must be protected by a GFCI. Connect only to a circuit that is protected by a
recognized ground-fault circuit interrupter (GFCI).
Wires must be connected to its own individual double pole breaker.
Installation Instructions
STEP 1: Make sure all electrical power is shut off. Remove the cover by
unscrewing the 1 screw on the bottom tab of the unit. Using a flathead
screwdriver, loosen the bottom two flathead screws in the white terminal
block located at the bottom right hand corner of the unit. Feed an 6 AWG
conducting wire pair through the electrical strain relief and into Line 1 and
Line 2 of the terminal block (Figure 5). Make sure that the
breaker is connected with one red wire (Line 1) and one black
wire (Line 2). Strip wire ends and ensure all wiring is properly
secured through the electrical strain relief located at the
bottom right when facing the unit. Tighten the two
Philipshead screws on the electrical strain relief and the two
flathead screws in the terminal block (Figure 5).
STEP 2: Using a suitable wire gauge that meets all applicable
electrical codes for the size of the breakers used, connect the 6 AWG wire pair to the correct set of wires from
the location’s main breaker panel.
Figure 5
L1
L2

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STEP 3: A separate 8 AWG ground (green wire) conductor for the incoming circuit is required. Route the ground
wire along the same path as Line 1 and Line 2. Using a Philips head screwdriver, tighten the ground wire to the
ground lead.
STEP 4: Use a flat head screwdriver to DOUBLE CHECK the electrical connections to make sure they are correct
and that all wire connections are tight and secure. Pull on wires to ensure that they do not pull out of their
connections. Also confirm that the correct breaker size and wire gauge has been used and confirm that the unit
has been connected to a ground in accordance with applicable codes.
STEP 5: Be sure to install the front cover back on the unit before turning on power to the unit. Confirm that all
the air has been purged from the water lines prior to turning on power to the unit. Refer to STEP 3 in the
plumbing installation section.
DANGER Failure to do so can result in property damage, injury or death.
CAUTION Ensure that you have made the correct connections. You must follow the wire connection as
shown to ensure proper operation of the unit. If you mix up one set of wires with another, the unit will not
operate correctly even though it turns on and otherwise appears to function properly.
The water heater is now installed and ready to use! Follow the General Operating Instructions to complete the
setup.
Electrical Specifications by Heater Input Wiring Diagram
HEATER INPUT
13kW
ELEMENTS
2
VOLTAGE
240 VAC Single Phase
MAX kW
13 kW
kW PER ELEMENT
6.5 kW
MAX AMPERAGE DRAW
54 AMPS
REQUIRED BREAKERS
1 x 60 AMP (Double
Pole)
REQUIRED WIRE GAUGE
2 x 6 AWG
HotMax requires 1 Double Pole
Breaker and 2 wires
L1
L2

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6- GENERAL OPERATING INSTRUCTIONS
Operating your new tankless water heater is similar to using any traditional water heating system. However,
HotMax endlessly produces near boiling hot water instantly without dropping in temperature over time so it is
very important that you carefully read all of the setup procedures and operating instructions and tips to ensure
the maximum performance and energy savings from your new water heater. We recommend that all members
of the household read these General Operating Instructions.
How your new water heater works: Your tankless water heater does not store hot water like a conventional
tank-type water heater. It contains heating elements that are capable of heating water to near boiling
temperature on-demand. As soon as you turn on a hot water dispenser, a sophisticated flow sensor recognizes
that you have turned on the water. This sensor measures flow rate while another sensor measures the incoming
water temperature. This information is transmitted continually to the computer logic controls which decide how
much power to send to the heating elements to heat the water to your desired temperature. Once the water
dispenser is turned off your water heater will turn off as well.
WARNING Scalding Hazard: The dispenser delivers near boiling 210°F (99°C) water which
can instantly burn or scald a person. Use care when operating this appliance.
NOTICE: If HotMax is installed at high altitudes, water will boil at lower temperatures. Turn down
the set point on the heater to compensate for this high altitude.
Water Quality: Quality of water should be taken into consideration when installing and maintaining the water
heater. Water conditions outside the recommended levels outlined below are not permitted and can damage
the water heater. Manufacture reserves the right to deny any warranty claim regarding damage suffered due to
use in water conditions not in accordance with the table below.
If water heater is installed in an area that is known to have hard water in excess of 10 Grains per gallon, which
may cause scale build-up, the water must be treated and/or the heater exchanger flushed regularly to prevent
damage to heat exchanger and/or heating elements.
A water treatment device such as a scale inhibitor or water softener should be installed on the cold water feed
to maintain optimal performance of the water heater in hard water areas. Contact customer service for
additional information on these accessory kits.

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7- MAINTENANCE
To ensure maximum performance of your water heater and to reduce the risk of a water leak, we recommend
the following maintenance:
Remove the Eemax Steam ShieldTM steam separating aerator (Patent Pending) once a month and soak in white
vinegar to descale any buildup. Perform this maintenance more often in heavy use or if the supply water is very
hard (hardness > 11 GPM). FAILURE TO DO SO CAN CAUSE HAZARDOUS OPERATION –SERIOUS BODILY INJURY
OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
Inspect the connections on the inlet and outlet of the water heater as well as the dispenser at least on an annual
basis for any signs of damage or failure. Any signs of damage, cracks, leakage or weakness should be addressed.
Take care not to over tighten the connections. Serious internal damage to your water heater can occur if you
over tighten the water heater connections at the unit. Check to make sure there are no signs of corrosions or
leaks around the dispenser mount or connections.
IMPORTANT NOTES:
DANGER As with all electrical appliances, under no circumstances should you attempt to install, repair or
disassemble this water heater without first shutting off all power to the unit directly at the fuse or circuit
breaker. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
When any maintenance is performed on the water heater or the plumbing system that may introduce air into
the plumbing pipes, it is important to turn the power off to the water heater and purge the air out of the lines
before allowing the unit to power up. FAILURE TO DO SO COULD CAUSE PERMANENT DAMAGE TO THE
HEATING ELEMENT AND VOID YOUR WARRANTY.
If you have a water supply with a high level of mineralization (hard water), you should increase the frequency of
your maintenance.
“CAUTION”
Before servicing the unit make sure
to disconnect the power supply
connection directly at the breaker.
REQUIRED WIRING #6, USE
1X60AMP CIRCUIT BREAKERS.

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8- TROUBLE SHOOTING GUIDE
Are you having problems with your water heater?
Please call or email our customer service and technical support team for any help you may need.
TOLL FREE 1-[phone] Email: [e-mail]
The following table represents some of the most common technical support questions we receive. Before calling
us, please read thoroughly to see if your question or problem is addressed.
PROBLEM
POSSIBLE CAUSE
SOLUTION
Water heater is not heating at all
(water is flowing but the unit is not
heating - the outgoing water
temperature is the same as the cold
water supply)
No power or incorrect
wiring.
Make sure the breakers at main electrical panel are ON. You may have a
faulty breaker or unit may be wired incorrectly.
Flow rate is too low /
water pressure is too low.
Your water heater has an activation flow rate of approximately 0.3 GPM
(1.1 LPM). If your water flow rate is less than this level, your unit will not
activate. Increase the flow rate. Reduce or remove restrictions upstream of
the unit.
Internal part failure.
Please call us for technical assistance.
Water heater is heating, but the water
temperature is not hot enough.
User temperature setting
too low.
Turn up the temperature setting on the unit.
Flow rate is too high.
Your water flow rate may exceed the physical heating capacity of your
water heater. The optional flow rate for HotMax is between 0.4 and 0.6
gpm. Reduce the flow rate or install a Flow Regulator.
Crossed wires.
If it’s a new installation, have your electrician double check the wiring. Is
possible that the wiring is incorrect.
Voltage less than 240
volts.
The heating elements on your water heater are design for 240 volts. When
used with a lower voltage, they produce less heating power. Make sure
there is sufficient voltage for your heater.
The water temperature at the
dispenser is less or greater than the
temperature setting of my water
heater.
Voltage less than 240
volts.
The computer chips in your tankless water heater are programmed with
the expectation that your incoming line voltage is 240 volts. If you have less
than 240 volts, it may affect the reading on your water heater’s digital
display and cause it to read slightly higher than the actual output
temperature. To compensate for this, increase the setting on your water
heater if you need / want hotter water.
Anti-Scald
pressure/balancing valve
or tempering valve.
HotMax is intended to produce water temperatures greater than 140°F
(60°F). Your dispenser should not have an anti-scald feature or a tempering
valve that automatically mixes cold water even when you turn your control
lever or handle to full hot. These devices prevent HotMax from operating.
Thermal loss due to long
pipe run
The proprietary outlet pipe/tube should be the only outlet for hot water
from the heater to the dispenser. Any other hot water delivery system
could result in heat loss especially if it has long distance to travel or the
pipes are cold. If the correct pipe is installed, adjust the temperature
setting on your water heater if you need/want hotter water.
Water temperature at the
dispenser is too hot
Check your flow for too little flow, set point temperature is too high, or
internal part failure. Call us for technical assistance.
Water spits/sprays/drips from
dispenser
Possible damage to the
dispenser or proprietary
Steam Shield aerator
Check and tighten fittings to ensure that there is a good connection. If the
problem continues, please call us for technical assistance.
Steam Shield aerator has
scale deposits
Remove and soak Steam Shield aerator in vinegar or descaling solution
overnight
Steam Shield aerator is
clogged
Remove aretor and remove any obtructions clogged in the screen.
Backflush with water if necessary.

15
9- USER INTERFACE
HotMax Features:
HotMax is designed for a flow rate of 0.5 gpm. An acceptable range is 0.4 –0.6 gpm. Flow rates outside this
range will negatively impact the outlet water temperature and the flow pattern from the dispenser.
The temperature control knob adjust water temperature in increments of 5°F
Turning the knob clockwise increases the set output water temperature
Turning the knob counter clockwise decreases the set output water temperature
You can set or adjust the temperature at any time between 140°F –200°F (60°C –99°C). The
temperature can be changed to your desired setting.
HotMax will fill an 8 oz cup or measurement cup in 7.5 to 8 seconds with near boiling hot water.
DANGER Hotter water increases the potential for Hot Water SCALDS
CAUTION Removing the cover while the unit is energized or hot exposes electrical shock and burn hazards,
which can cause INJURY or DEATH. Adjustment should only be done by a licensed plumber or electrician.
HotMax –13 kW
1. Hot Water Outlet
2. Cold Water Inlet
3. Adjustment Knob & Temperature Control
4. Electrical Strain Relief
5. Front Cover
Input
Height in(mm)
Width in(mm)
Depth in(mm)
13 kW
11.5 (292.1)
8 (203.2)
3.75 (95.25)
1
2
5
3
4

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NOTES
EX07200-82 Rev: C