General; Mounting The Unit - STIEBEL ELTRON Tempra 12 B Installation Instructions Manual

THIS MANUAL MUST BE READ CAREFULLY BEFORE ATTEMPTING TO INSTALL THE TEMPRA WATER HEATER.
IF YOU DO NOT FOLLOW THE SAFETY RULES OR THE INSTRUCTIONS OUTLINED IN THIS MANUAL, THE UNIT
MAY NOT OPERATE PROPERLY AND IT COULD CAUSE PROPERTY DAMAGE, SERIOUS BODILY INJURY AND/
OR DEATH.
STIEBEL ELTRON, INC. WILL NOT BE LIABLE FOR ANY DAMAGES BECAUSE OF FAILURE TO COMPLY WITH THE
INSTALLATION AND OPERATING INSTRUCTIONS OUTLINED IN THIS MANUAL OR BECAUSE OF IMPROPER USE.
IMPROPER USE INCLUDES THE USE OF THIS APPLIANCE TO HEAT ANY LIQUID OTHER THAN WATER. FAILURE
TO COMPLY WITH THE INSTALLATION AND OPERATING INSTRUCTIONS OR IMPROPER USE VOIDS WARRANTY.
NEVER REMOVE THE UNIT'S COVER UNLESS THE ELECTRICITY IS TURNED OFF.
IF YOU HAVE ANY QUESTIONS REGARDING THE INSTALLATION OR OPERATION OF THIS WATER HEATER, OR
IF YOU NEED ANY ADDITIONAL INSTALLATION MANUALS, PLEASE CALL OUR TECHNICAL SERVICE LINE ON
800-582-8423 (USA AND CANADA ONLY). IF YOU ARE CALLING FROM OUTSIDE THE U.S. OR CANADA, PLEASE
CALL USA 413-247-3380 AND WE WILL REFER YOU TO A QUALIFIED STIEBEL ELTRON SERVICE REPRESENTATIVE
IN YOUR AREA.
1 Temperature adjustment knob
2 Temperature scale
2.1 Temperature display
3 "Power" light
4 Knock-outs for wires
5 Safety thermal cut out
6 Outlet temperature sensor
7 Wiring block
8 Electronic control unit
9
Heating system
10 Flow sensor
11 Motor-operated valve
12 Cold water connection
13 Hot water connection
14 Hot valve (left)
15 Cold valve (right)
16 Sink
17 Water supply line for faucet/tap
installation
2

General

DANGER: WATER TEMPERATURES OVER
!
125 °F CAN CAUSE SEVERE BURNS
INSTANTLY OR DEATH FROM SCALDING. A
HOT WATER SCALDING POTENTIAL EXISTS IF
THE THERMOSTAT ON THE UNIT IS SET TOO
HIGH. HOUSEHOLDS WITH SMALL CHILDREN,
DISABLED OR ELDERLY PERSONS MAY REQUIRE
THAT THE THERMOSTAT BE SET AT 120 °F OR
LOWER TO PREVENT POSSIBLE INJURY FROM
HOT WATER.
The TEMPRA and TEMPRA Plus units are
designed to supply hot water for a house,
apartment or certain commercial applications.
Unlike a conventional storage type water
heater the TEMPRA tankless water heater does
not store hot water. Instead, water is heated
instantaneously as it flows through the unit.
The TEMPRA offers greater energy efficiency
than storage type water heaters due to the
absence of stand-by losses and reduced hot
water pipe runs.
The input of heat into the water is controlled
electronically. The TEMPRA will deliver any
water temperature between 86 °F (30 °C)
and 140 °F (60 °C). Please set the desired
temperature using the knob on the front cover.
The TEMPRA PLUS Temperature adjustment
knob can be set to: OFF, 86...140 °F (30...60 °C).
The TEMPRA has a °F and a °C scale. The output
temperature of the TEMPRA Plus is shown
in the digital display in °F or °C units. (°F or
°C units can be selected during installation,
factory setting: °F). The maximum temperature
is electronically limited to 140 °F (60 °C).
Recommended is a setting of
108 °F (42 °C) to 116 °F (47 °C).
The outlet temperature of the TEMPRA Plus
can be limited to 109 °F (43 °C).
Tempra B units:
In case the "Power" LED is flashing while the
unit operates, the water flow rate exceeds the
heating capacity of the unit. Reduce the hot
water flow rate in order to let the unit achieve
the set point temperature.
Tempra Plus units:
Tempra Plus units have Advanced Flow
Control. This technology is designed to reduce
water flow to maintain consistent temperature
if the unit's heating capacity is exceeded. It
does this by using a computer controlled,
motorized valve to temporarily reduce water
flow until the demand is reduced. This is
normal operation and does not necessarily
mean the unit is clogged or obstructed.
In case you have questions regarding the way
you plan to use the TEMPRA unit, please call
our technical service line at 800-582-8423 (USA
and Canada). For service outside the U.S. and
Canada, please call us at USA 413-247-3380.
You can also e-mail us at info@stiebel-eltron-
usa.com or fax us at USA 413-247-3369.
The TEMPRA can be used for the following
applications.
G 1
Typical residential installation
G 2
Typical commercial installation
– 7 –
3

Mounting the unit

NOTICE: UNIT MUST BE INSTALLED
!
IN A VERTICAL POSITION WITH THE
WATER FITTINGS POINTING DOWNWARD.
WARNING: DO NOT INSTALL UNIT WHERE
IT WOULD ROUTINELY BE SPLASHED WITH
WATER. ELECTRIC SHOCK MAY RESULT.
CAUTION: HOT WATER OUTLET PIPES LEAVING
UNIT CAN BE HOT TO THE TOUCH. INSULATION
MUST BE USED FOR HOT WATER PIPES BELOW
36" DUE TO BURN RISK TO CHILDREN.
NOTICE: THIS UNIT SHOULD NOT
!
B E I N STA L L E D I N A LO C AT I O N
WHERE IT MAY BE EXPOSED TO FREEZING
TEMPERATURES (LESS THAN 36 °F). IF
THE UNIT MAY BE SUBJECT TO FREEZING
TEMPERATURES ALL WATER MUST BE DRAINED
FROM THE UNIT. FAILURE TO COMPLY WITH
THIS INSTRUCTION VOIDS ALL WARRANTIES.
THE UNIT SHOULD BE LOCATED IN AN AREA
WHERE WATER LEAKAGE FROM THE UNIT OR
CONNECTIONS WILL NOT RESULT IN DAMAGE
TO THE AREA ADJACENT TO THE UNIT. IF
SUCH A LOCATION CANNOT BE AVOIDED IT
IT RECOMMENDED THAT A DRAIN PAN BE
INSTALLED UNDER THE UNIT.
1. Install TEMPRA as close as possible to the
main hot water draw-off points.
2. Install TEMPRA in a frost free area. If frost
might occur, remove unit before freezing
temperatures set in.
3. Leave a minimum of 5" of clearance on all
sides for servicing.
4. Remove the cover screw with chopper disc
C
and open the cover .
5. Mount unit securely to wall by putting at
least three screws through mounting holes
1
E - 3
.
Screws and plastic wall anchors for
mounting on masonry or wood are
provided.