User Manual
Eemax Electric Tankless Water Heater
IMPORTANT SAFETY INFORMATION
When installing or using any high voltage electrical appliance, basic safety precautions should always be followed. Under no circumstances 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 breaker box. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
THIS PRODUCT SHOULD BE INSTALLED BY A QUALIFIED ELECTRICIAN OR 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 homeowner 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.
ABOUT YOUR TANKLESS WATER HEATER
Congratulations on the purchase of your Electric Tankless Water Heater! You have purchased the most technologically-advanced electric tankless water heater on the market today.
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 precise user-selected output water temperature between 80°F and 140°F (subject to incoming water temperature and power of the selected model).
To get the best 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.
At any time, if you have any questions, please contact us directly at:
Eemax Inc. 400 Captain Neville Drive, Waterbury, CT 06705 Toll Free: 1-800-543-6163, or 203-267-7890 Fax: 203-267-7975 [email protected]
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 Eemax at 800-543-6163.
Inspect all components. The contents of your box should include one of the following units:
- EEM24008
- EEM24011
- EEM24013
- EEM24018
- EEM24024
- EEM24027
- EEM24036
2- SELECTING A LOCATION TO INSTALL
This product is designed to be installed indoors only. You may be able to install your unit in an outdoor location as long as it is mounted in a suitable enclosure that protects it from rain, splashed water, direct sunlight, debris, and insects.
DO NOT install this product in a location where it may be subject 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 the reach of children so they cannot 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.
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 under water pipes or air conditioning lines that might leak or condense moisture that could then drip onto the heater. DO NOT install above electrical boxes or junctions.
If you plan to install your water heater on a second floor or in a heated attic space, make sure that you 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. Alternatively, you can 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 tankless water heater should be secured to the mounting surface with 4 screws (minimum 1 inch long) using the built-in mounting brackets on each side of the heater. Make sure that the mounting surface is solid and secure, and ensure that the unit is level prior to securing the screws. For ease of installation and servicing, we recommend that this product be installed in an upright position with the inlet and outlet water connections at the bottom of the unit for the 18, 24, 27, and 36 kW models, and with the inlet and outlet water connections on the left and right sides of the unit for the 8, 11, and 13 kW models.
Recommended Clearances: 12 inches above and below the heater
6 inches in front of and to the sides of the heater
CAUTION: Combustible materials should be kept at least 24 inches away from your water heater and the hot water outlet pipe.
4- PLUMBING INSTALLATION
Please follow all plumbing 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.
Installation Instructions
STEP 1: Connect the HOT WATER line to the water heater marked HOT WATER OUTLET located on the left side of the heater when facing unit. Connect the COLD WATER line to the water heater marked COLD WATER INLET on the right side when facing unit.
STEP 2: After tightening both fittings at the water heater, open several hot water faucets and allow water to run though the water 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 home’s 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 3: Carefully inspect all connections, unions, and the pressure relief valve (if installed) for leaks.
IMPORTANT NOTES:
- Do not solder any pipes with unit connected to pipes – heat from soldering may damage the flow sensor. Doing so will also void the warranty.
- This Eemax 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 Commonwealths of Massachusetts and State of Kentucky require a pressure relief valve. Please check your local installation codes for any special requirements. - The maximum operating water pressure is 150 PSI. If the water pressure is higher, a pressure reducing valve must be installed on the main incoming water supply line prior to installing the electric tankless water heater.
- Flexible water heater hoses can and are recommended to be used with your water heater as part of the installation. When connecting the inlet water pipe to the unit, make sure to use a wrench to hold the units connection, and another wrench to tighten, so the flow sensor on the unit is not 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.
- We recommend that a manual shut-off valve (ball valve) be installed on the inlet and outlet of the water heater so there is a convenient shut-off point available in the event that future maintenance or servicing is required. Before connecting pipes to the water heater, it is extremely important to flush the lines to eliminate all plumbing paste or residue in the lines caused by any welding or soldering.
We recommend that all the water pipes or hoses within 3 feet of the inlet and outlet connections be rated for high temperature applications with a 150°F minimum.
5- ELECTRICAL INSTALLATION
Eemax 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 U.S.A., 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 model specifications below for details).
Before installing this product, ensure that the home has sufficient electrical power available to handle the maximum amperage load of the applicable model.
IMPORTANT NOTES:
- Model EEM24008, EEM24011, and EEM24013 require 1 set of wires and ground (see wiring diagram)
- Model EEM24018 requires 2 sets of wires and ground (see wiring diagram)
- Model EEM24024 and EEM24027 require 3 sets of wires and ground (see wiring diagram)
- Model EEM24036 requires 4 sets of wires and ground (see wiring diagram)
- Please see required wire gauge on the next page
- Each set of wires must be connected to its own individual double pole breaker
Installation Instructions
STEP 1: Take each wire pair and connect them to one breaker (see wiring diagram). Make sure that each breaker is connected with one black wire and one red wire
STEP 2: Using a suitable wire gauge that meets all applicable electrical codes for the size of the breakers used, run the correct sets of wire from the home’s main breaker panel to the tankless water heater.
STEP 3: A separate ground conductor for each incoming circuit is required.
STEP 4: DOUBLE CHECK the electrical connections to make sure they are correct and that all wire connections are tight and secure. 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: Confirm that all the air has been purged from the water lines prior to turning on power to the unit. Refer to STEP 2 in the plumbing installation section.
CAUTION: Ensure that you have made the correct connections. You must follow the wire connection as shown in 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 set up. We highly recommend that this is done with the homeowner present.
Electrical Specifications by Model MODELS
6- SIZING GUIDE
Please use the chart below to see how many gallons per minute your tankless water heater can produce with your incoming water temperature. The gallons per minute is calculated assuming 105°F outlet temperature.
FLOW RESTRICTOR – OPTIONAL
In order to ensure the optimal temperature output and overall performance of your tankless water heater you may require a flow restrictor. These flow restrictors are installed on the outlet connection of your tankless water heater and limit the maximum volume coming out of your unit to a specified flow rate to prevent the exit temperature from becoming too cool. To learn more about flow restrictors or find out how to purchase one for your tankless water heater visit us online at Eemax.com or contact us at 1-800-543-6163.
Steps for Choosing a Flow Restrictor
- Find your model in the chart on the left
- Choose the column with the inlet water temperature closest to your geographical location
- Take the GPM or gallons per minute you find and match it with the corresponding flow restrictor on the right
*Selection based on inlet temperature above and outlet temperature of 105°F
7- GENERAL OPERATING INSTRUCTIONS
Operating your new tankless water heater is very similar to using any traditional water heating system. However, it is very important that you carefully read all of the set-up 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 very high powered heating elements that are capable of heating water on-demand. As soon as you turn on a hot water faucet, 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 faucet is turned off your water heater will turn off as well.
8- MAINTENANCE
To ensure maximum performance of your water heater and to reduce the risk of a water leak, we recommend the following maintenance:
You should inspect the connections on the inlet and outlet of the water heater at least on an annual basis for any signs of damage or failure. Any signs of damage, cracks, leakage or weakness should be address. 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.
IMPORTANT NOTES:
As with all electrical appliances, under no circumstances should you attempt to install, repair or disassembled this water heater without first shutting off all power to the unit directly at the fuse or breaker box. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
When any maintenance is performed on the water heater or the home’s 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.
9- 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 1-800-543-6163
[email protected]
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.
10- USER INTERFACE
Power
- Click adjustment stem, the display will turn on
- Click the adjustment stem again, the display will turn off
C/F Conversion
- Press the stem for 3 seconds, the display will change from Fahrenheit to Celsius or vice versa
Temperature Control
- Turning the stem clockwise increases the set output water temperature
- Turning the stem counter clockwise decreases the set output water temperature
- You can set or adjust your temperature at any time between 80°F – 140°F (4°C – 60°C). The temperature can be changed to your desired setting. The display will only stay on when the unit is in use or when you are setting the temperature.
CAUTION – removing the cover to change the temperature set point exposes electrical shock and burn hazards, which can cause INJURY or DEATH. Adjustment should only be done by a licensed plumber or electrician.
- Hot Water Outlet
- Cold Water Inlet
- Celsius/Fahrenheit Conversion (Press & Hold 3 sec.)
- Temperature Set Point Display
- Adjustment Stem & Temperature Control
- Wire Connection
- Brass Compression Nut
- Brass Compression Ferrule
- Electrical Conduit
- Mounting Bracket (1”)
Eemax Inc. 400 Captain Neville Drive, Waterbury, CT 06705 Toll Free: 1-800-543-6163 or 203-267-7890 Fax: 203-267-7975 [email protected]