INSTALLATION GUIDE AND OWNER’S MANUAL
AccuMix II™
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 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 must be installed 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 employ 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.
Contents
GENERAL .....................................................................................................................................................................4
1) MOUNTING THE UNIT TO THE WALL......................................................................................................................5
2) PLUMBING HOOK-UP .............................................................................................................................................6
3) ELECTRICAL HOOK-UP ............................................................................................................................................9
4) COMMISSIONING THE HEATER ........................................................................................................................... 11
5) TROUBLESHOOTING ............................................................................................................................................ 13
6) PERIODIC MAINTENANCE .................................................................................................................................... 14
7) PART NUMBERS FOR FITTINGS, AERATORS AND AERATOR ADAPTORS ............................................................. 15
8) REPAIR PARTS FOR ACCUMIX II UNITS ................................................................................................................ 15
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(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.
(CANADIAN INSTALLATIONS ONLY) 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, Inc.™ AccuMix II heater is specifically designed to take in cold water and heat it to temperatures
suitable for handwashing and other mild temperature uses up to a factory preset of 105°F. The unit employs a
complex algorithm that actively manages power application to real-time system demand. An integrated flow
meter, along with inlet and outlet thermistors, provide data that allows the heater to instantly adapt to
variations in flow and temperature. It is also equipped with an ASSE 1070-2004 approved mixing valve to meet
UPC 407.3 and similar plumbing codes for public handwashing applications. AccuMix II employs an integrated
mixing valve utilized according to the manufacturer’s stated specifications and certified to ASSE 1070-2004.
To obtain optimum performance and energy savings, the unit should be located as close as possible to the pointof-use. The unit is supplied with compression rings and nuts suitable for direct coupling to 3/8” copper or PEX™
piping. Do not use additional screwed fittings, 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.
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1) MOUNTING THE UNIT TO THE WALL
THIS HEATER MUST BE INSTALLED IN A LOCATION WHERE IT IS NOT SUBJECT TO
FREEZING TEMPERATURES.
The heater should be mounted under the sink as close to the point-of-use as possible. Ideal position is
fittings pointed down, but the heater can be mounted in any orientation.
Make sure to leave a minimum of 8 inches service
clearance at the end OPPOSITE the fittings.
Remove the cover and fasten to the wall using the
four mounting holes at each corner of the back plate.
Replace the cover.
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