Eemax MB004120T, MB005240T, MB007240T, MB010240T, MB012240T Installation Manual

INSTALLATION GUIDE AND OWNER’S

MANUAL “ACCUMIX MT/ MB”

ELECTRIC INSTANTANEOUS WATER HEATER

WITH ASSE 1070 APPROVED MIXING VALVE

BEFORE ATTEMPTING ANY INSTALLATION, MODIFICATION OR SERVICE OF THIS

HEATER, MAKE SURE THE ELECTRICAL POWER IS DISCONNECTED.

Read and understand these instructions thoroughly before attempting the installation or service of this
water heater. Failure to follow these instructions can result in serious injury, death and/or property
damage. The warranty of this water heater will depend upon the proper installation according to these
instructions. Some heaters come supplied with separate faucet aerators. If supplied, the aerator must
be installed in the faucet for optimum performance. This heater must be used to heat water only and
be in a location where it is not subject to freezing temperatures. The manufacturer is not liable for any
damages resulting from improper installation or misuse.

This installation must conform to the latest requirements of the National Electrical Code and all
applicable state and local codes. This information is available through your local authorities. You must
understand these requirements before beginning this installation.

This unit is not required by UL 499 to have a Temperature and Pressure relief valve (T&P). You should
check with local codes to find out if one is required. If it is, it must be installed in the outlet hot water
pipe between the heater and the isolation valve.

IMPORTANT SAFETY INSTRUCTIONS

When using this electrical equipment, basic safety precautions should always be followed, including the
following:

READ AND FOLLOW ALL INSTRUCTIONS

A green terminal (or a wire connector marked “G”, “GR, “Ground”, or “GROUNDING”) is provided within
the control box. To reduce the risk of electric shock, connect this terminal or connector to the
grounding terminal of the electric service or supply panel with a continuous copper wire in accordance
with your local electrical code.

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This heater must be installed in a location where it is not subject
to freezing temperatures.

(Canadian Installations Only) Connect only to a circuit protected by a Class A
ground fault circuit interrupter. Attention: Brancher uniquement à un circuit protégé par un disjoncteur
de fuite de terre de Classe A.

Do not install in a bath enclosure or shower stall or connect to a salt-regenerated
water softener or a water supply of salt water. Attention: Ne pas installer dans une baignoire ou une
cabine de douche et ne pas brancher à un adoucisseur d’eau régénéré avec du sel ou à un
approvisionnement en eau salée.

(Canadian Installations Only) Use copper conductors only. Use bonding conductor in accordance with
the Canadian Electrical Code Part I. Utilisez dez conducteurs en cuive uniquement. Utilisez des
conducteurs de mize à la masse conformement au Code Canadien de L’Électricité, Partie I.

SAVE THESE INSTRUCTIONS

GENERAL

The Eemax “AccuMix” heater is specifically designed to take in cold water and heat it to temperatures
suitable for hand washing and other mild temperature uses up to a maximum of 1050 F. It is equipped
with an ASSE 1070-2004 approved mixing valve for scald protection in the event of a temperature spike.
To obtain optimum performance and energy savings, the unit should be located as close as possible to
the point of use. The MT unit is supplied with compression rings and nuts suitable for direct coupling to
3/8” copper or plastic piping. MB units have ½” compression fittings. Do not use additional screwed
fittings or pipe dope or Teflon tape. Doing so will void the warranty. DO NOT SOLDER PIPES WHILE THE

UNIT IS INSTALLED as serious damage to the heater will result.

CALIFORNIA PROPOSITION 65 WARNING

The mixing valve in this product contains chemicals known to the State of California to cause cancer and

birth defects or other reproductive harm. (California law requires this warning to be given to customers

in the State of California)

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1) The heater should be mounted “under the sink” as close to the point of use as possible. This unit
must only be mounted in the correct position with the water fittings at the top (MT) or bottom (MB) of
the unit. Mounting in the incorrect position WILL cause element burn out.

2) The fittings must be at least 16
inches below the level of the hot
water faucet. Make sure to
leave a minimum of 8 inches
service clearance at the end
OPPOSITE the fittings.

3) Remove the cover and fasten to
the wall using the four mounting
holes at each corner of the back

plate. Make sure the “UP” arrow
is facing “UP”. Replace the cover.

Min. 8” Clearance

above unit
(MB Models)

Min. 8” Clearance

below unit

(MT Models)

1) MOUNTING THE UNIT TO THE WALL

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1) The heater’s cold water INLET is on the

“RIGHT” and the hot water OUTLET is on the
“LEFT”. Install full flow ball valves to the inlet

and outlet pipes and run water through the inlet
pipe into a bucket to purge it of any debris.
Close the inlet ball valve. FAILURE TO DO SO

MAY CLOG MIXING VALVE!

2) PLUMBING HOOK-UP

The heater is supplied with brass compression fittings that are compatible with either copper or plastic
pipe. “MT” has 3/8” fittings. “MB” units have ½” fittings. Make sure these fittings are used for this
installation. Contact your Eemax representative for further information.

NEVER SUBSTITUTE THREADED PIPE FITTINGS USING PIPE DOPE OR TEFLON TAPE

AND NEVER SOLDER ANY PIPE CONNECTIONS WHILE ATTACHED TO THIS HEATER BECAUSE DAMAGE
TO THE HEATER WILL RESULT. DOING THIS WILL VOID THE WARRANTY.

Eemax strongly recommends that the heater be supplied directly from the main cold water trunk line
when possible. This helps to avoid a potential water flow interruption to the heater which could lead to
a failure of the heating element.

System Requirements:

Minimum operating pressure 30 PSI dynamic Optimum operating pressure 55 to 80 PSI static

Maximum pressure 150 PSI. Min flow rate .3GPM

For optimum performance, we recommend the use of isolation valves (full flow ball type) on the inlet
and outlet pipes and use of a 40 mesh Y-Strainer on the inlet of the heater. Clean screen periodically for
best performance of the mixing valve

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