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8 | AQM TANKLESS ELECTRIC WATER HEATERS WWW.APTANKLESS.COM
INSTALLATION
INITIAL STARTUP
» 7. The AQM is designed for connection to a braided
stainless steel hose with a 3/8“ OD Tube Outlet.
» 8. When all plumbing work is completed, check for leaks
and take corrective action before proceeding.
7.3 Electrical connection
WARNING: BEFORE BEGINNING ANY WORK ON THE
ELECTRIC INSTALLATION, BE SURE THAT THE MAIN
CIRCUIT BREAKER PANEL SWITCH IS "OFF" TO AVOID ANY
DANGER OF ELECTRIC SHOCK. FAILURE TO DO SO MAY
RESULT IN SERIOUS INJURY OR DEATH. ALL MOUNTING AND
PLUMBING MUST BE COMPLETED BEFORE PROCEEDING
WITH ELECTRICAL HOOKUP. WHERE REQUIRED BY
LOCAL, STATE OR NATIONAL ELECTRICAL CODES, THE
CIRCUIT SHOULD BE EQUIPPED WITH A GROUND FAULT
INTERRUPTER.
WARNING: AS WITH ANY ELECTRIC APPLIANCE, FAILURE
TO ELECTRICALLY GROUND UNIT MAY RESULT IN
SERIOUS INJURY OR DEATH.
CAUTION: INSTALLING AN AQM 21, AQM 2.51, AQM 31,
OR AQM 3.51 ON A 208 V OR 220240 V CIRCUIT WILL
DESTROY THE HEATING ELEMENT. THIS IS CONSIDERED
IMPROPER INSTALLATION AND WILL VOID YOUR
FACTORY WARRANTY.
Voltage
AQM 2-1: 110–120 V
AQM 2.5-1: 110–120 V
AQM 3-1: 110–120 V
AQM 3.5-1: 110–120 V
AQM 4-2: 220–240 V, 208 V
AQM 6-2: 220–240 V, 208 V
1. All electrical work must comply with national and applicable
state and local electrical codes.
2. The AQM should be connected to a properly grounded
dedicated branch circuit of proper voltage rating. In installa-
tions with several AQM units, each unit requires an independent
circuit. Please refer to the technical data table for the correct wire
and circuit breaker size.
3. Reinstall plastic cover.
8. Initial start-up
!
WARNING: OPEN HOT WATER FAUCET FOR A FEW
MINUTES UNTIL WATER FLOW IS CONTINUOUS AND
ALL AIR IS PURGED FROM WATER PIPES. THE UNIT’S PLASTIC
COVER MUST BE INSTALLED BEFORE THE CIRCUIT BREAKER
IS TURNED ON.
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9. Water heater hand over
Explain the functions of the unit to the user and familiarize him
or her with its use.
Important instructions:
» Draw the user’s attention to possible hazards (scalding).
» Hand over these instructions for future reference.
» In order to obtain a proper temperature at a single spout
mixer-type faucet, restrict cold water ow to faucet by
partially closing the cold water shut-o valve under the sink
until cold water and hot water ow rates are approximately
the same.
10. Normal maintenance
!
CAUTION: OTHER THAN THE FILTER SCREEN, THE
AQM DOES NOT CONTAIN ANY PARTS SERVICEABLE
BY THE LAY PERSON. IN CASE OF MALFUNCTION PLEASE
CONTACT A LICENSED PLUMBER OR ELECTRICIAN.
Aqua Power AQM tankless heaters are designed for a very long
service life. Actual life expectancy will vary with water quality
and use. The unit itself does not require any regular maintenance.
However, to ensure consistent water ow, it is recommended
to periodically remove scale and dirt that may build up at the
aerator of the faucet or in the shower head. Also, the AQM has
a built in lter screen that should be cleaned from time to time.
In order to do this, turn o the cold water supply at the isolating
valve. Clean screen and put the screen back into its original
position.
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