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Simply the Best

USE AND CARE MANUAL
Tankless Electric Water Heaters

Page 1

Simply the Best

 17 West St., W. Hatfield, MA 01088 

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 800.582.8423 

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 413.247.3380 

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 fax 413.247.3369 

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 info

@

stiebel-eltron-usa.com 

|

 www.stiebel-eltron-usa.com

! DANGER: ELECTROCUTION

BEFORE PROCEEDING WITH ANY INSTALLATION, 
ADJUSTMENT, ALTERATION, OR SERVICE, ALL CIRCUIT 
BREAKERS AND DISCONNECT SWITCHES SERVICING 
THE APPLIANCE MUST BE TURNED OFF. FAILURE TO DO 
SO COULD RESULT IN SERIOUS PERSONAL INJURY OR 
DEATH.

! DANGER: ELECTROCUTION

NEVER REMOVE THE APPLIANCE’S COVER UNLESS THE 
ELECTRICITY SERVICING THE APPLIANCE IS TURNED OFF. 
FAILURE TO DO SO COULD RESULT IN PERSONAL INJURY 
OR DEATH.

All Tankless Models
Stiebel Eltron tankless water heaters are designed for a very 
long service life. Actual life expectancy will vary with water 
quality and use. 

In areas with hard water that produces scale, descaling of 
the entire unit may be required, and should be performed 
as often as necessary. We recommend the Flow-Aide System 
(Stiebel Eltron part # 540000) for this procedure. In these 
areas, consideration should also be given to installing a filter 
that will prevent scale buildup on the cold water supply to 
the water heater. We recommend the Scale TAC-ler Water 
Conditioner (Stiebel Eltron part # 692442) for this.

Scale and dirt may build up in the filter screen in the unit 
and should periodically be removed. Following all directions 
and precautions in this manual, regularly clean the filter 
screen and replace if necessary. Always shut off power to the 
unit at the circuit breakers and water at the unit’s isolation 
valves prior to removing the filter screen.

Scale and dirt build up may also occur at the hot water out-
lets served by the unit, such as the faucet aerator, or shower 
head. Keeping these filter screens clean will ensure consis-
tent water flow.

CLEANING: Use a damp cloth to clean of the unit’s housing. 
Do not use any abrasive or corrosive cleaning agents. 

Mini

 and Mini

-E Models

Following all directions and precautions in this manual, 
regularly clean the filter screen located in the cold water 
inlet connection and replace if necessary. Descaling can be 
done using a descaling solution or household vinegar.

To access the filter screen in a Mini

, always shut off power 

to the unit at the circuit breakers and water at the unit’s 
isolation valves prior to removing the filter screen. Then 
disconnect the cold water supply at the unit. Remove the 
filter screen by reaching up into the cold inlet pipe with a 
small flathead screwdriver and while putting pressure on the 
inside of the screen’s plastic rim, pull the screen down and 
out. Clean and replace the filter screen, or install a new one. 
Never run the unit without the filter screen in place. 

Filter screen location in Mini

    

and Mini

-E models

Filter screen

Front of unit

! DANGER: BURNS

WATER TEMPERATURES OVER 125°F (51°C) CAN CAUSE 
SEVERE BURNS INSTANTLY OR DEATH FROM SCALDING. 
A HOT WATER SCALDING POTENTIAL EXISTS IF THE 
THERMOSTAT ON THE APPLIANCE IS SET TOO HIGH. 
HOUSEHOLDS WITH SMALL CHILDREN, DISABLED OR 
ELDERLY PERSONS MAY REQUIRE THAT THERMOSTATS 
BE SET AT 120°F (48°C) OR LOWER TO PREVENT 
POSSIBLE INJURY FROM HOT WATER.

CAUTION: 

OTHER THAN THE FILTER SCREEN, THESE 

APPLIANCES DO NOT CONTAIN ANY PARTS SERVICEABLE 
BY THE LAY PERSON. IN CASE OF MALFUNCTION, PLEASE 
CONTACT A LICENSED PLUMBER OR ELECTRICIAN.

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