STIEBEL ELTRON MINI 3 User manual

165894
Mini™ 3, Mini™ 4, Mini™ 6
English
TANKLESS ELECTRIC WATER HEATERS
INSTALLATION INSTRUCTIONS FOR THE LICENSED PLUMBER AND
ELECTRICIAN
English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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Temperature increase above ambient water temperature.
2.0 2.6 3.2 4.0 4.3
Mini™ 4 @ 240V 3.5 25 19 – – –
Mini™ 4 @ 240V 3.5 45 35 – – –
[ °F ]
Typ / Type kW l / min
[ °C ]
Min. water flow to activate unit.
Min. water flow to activate unit.
Mini™ 3 3.0 41 30 – – –
Typ / Type kW GPM
0.5 0.69 0.85 1.06 1.14
Mini™ 3 3.0 22 17 – – –
Mini™ 6 @ 240V 5.7 – 46 46 37 34
Mini™ 6 @ 240V 5.7 – – 26 20 19
Legend to figures
1 Hot water connection
2 Cold water connection with filter screen
3 Filter Screen
4 Mounting holes
5 Electrical junction box
6 Water supply line for faucet installation
7 Sink
8 Cold valve (right)
9 Hot valve (left)
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12
5
6
7
8
9
10
11
Mini™ 3 L N GRD
Mini™ 4, 6 L L GRD
C
B
A
D
3.54 (190) 3.23 (82)
5.62 (143)
4.72 (120)
1.18 (30)
1.89 (48)
3.74 (95)
6.50 (165)
0.79 (20) [ inch (mm) ]
4
2
3
98
7
6
5
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THIS MANUAL MUST BE READ CAREFULLY BEFORE ATTEMPTING TO INSTALL THE Mini™ 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, SE-
RIOUS BODILY INJURY AND/OR DEATH. ALL INSTALLATIONS MUST BE CARRIED OUT BY A LICENSED
ELECTRICIAN AND LICENSED PLUMBER.
– Special uses in photo developing shops,
laboratories etc.
The Mini™ can also be used for whole apart-
ments and homes in warm climate zones
such as the Caribbean region, Central Amer-
ica and Mexico due to the higher ambient
water temperatures.
Mounting the unit
UNIT MUST BE INSTALLED WITH THE
PLUMBING CONNECTIONS POINTING
DOWNWARD OR UPWARD. DO NOT IN-
STALL UNIT WHERE IT WOULD ROUTINELY
BE SPLASHED WITH WATER. ELECTRIC
SHOCK MAY RESULT.
1. Install Mini™ as close as possible to the
hot water draw-off point, for example,
directly underneath the sink or next to
the shower stall.
2. Install Mini™ in a frost free area. If frost
may occur, remove unit before freezing
temperatures set in.
3. Leave a minimum of 5" of clearance on
all sides for servicing.
4. Remove screws left and right and remove
plastic backplate by pulling on the tab
with a screwdriver B.
5. Mount backplate securely to wall by put-
ting two screws through mounting holes
A B.
6. Snap unit back into the backplate and
reinstall the two screws.
Water connections
IF SOLDERING NEAR THE UNIT IS
NECESSARY, PLEASE DIRECT THE
FLAME AWAY FROM THE HOUSING OF THE
UNIT IN ORDER TO AVOID DAMAGE. ALL
PLUMBING WORK MUST COMPLY WITH
NATIONAL AND APPLICABLE STATE AND
LOCAL PLUMBING CODES. NOTE: EXCES
SIVE HEAT FROM SOLDERING ON COP
PER PIPES NEAR THE Mini™ MAY CAUSE
DAMAGE.
1. A pressure reducing valve must be in-
stalled if the cold water supply pressure
exceeds 150 PSI (10 bar).
2. Make certain that the cold water supply
line has been flushed to remove any scale
and dirt.
3. Install an isolating valve in cold water line
as shown in illustration C. This allows the
unit to be isolated for maintenance pur-
poses.
4. When the plumbing connections are fac-
ing downward the cold water connection
(inlet) is on the right side of the unit, hot
water connection (outlet) is on the left
side of unit.
5. Tankless water heaters such as the Mini™
are not required to be equipped with a
Pressure and Temperature Relief Valve. If
the local inspector will not pass the instal-
lation without a relief valve, it should be
installed on the hot water outlet side of
the unit.
IF YOU HAVE ANY QUESTIONS REGARDING THE INSTALLATION OR OPERATION
OF THIS WATER HEATER, OR IF YOU NEED AN ADDITIONAL INSTALLATION MANUALS,
PLEASE CALL OUR TECHNICAL SERVICE LINE AT 800-582-8423 (USA AND CANADA ONLY).
IF YOU ARE CALLING FROM OUTSIDE THE U.S. AND CANADA, PLEASE CALL USA 413-247-3380 AND WE
WILL REFER YOU TO A QUALIFIED STIEBEL ELTRON SERVICE REPRESENTATIVE IN YOUR AREA.
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 PLASTIC COVER UNLESS THE ELECTRICITY IS TURNED OFF.
General
The Mini™ tankless water heater differs from
conventional storage type water heaters. It
does not store hot water. Instead, water is
heated instantaneously as it flows through
the unit. The powerful heating elements
are activated by a flow switch as water is
drawn from a hot water faucet connected
to the Mini™. Due to the absence of stand-
by losses, the Mini™ has greater energy
efficiency than storage type water heaters.
Also, the unit will continuously supply hot
water as long as the faucet is open.
The temperature of the hot water delivered
by the Mini™ depends on the wattage of
the heating element, the temperature of
the incoming cold water, and the water
flow rate through the unit. In order for
the Mini™ to operate properly, it must be
carefully matched to the application. In
case you have questions regarding the
way you plan to use the Mini™, 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
[email protected] or fax us at
413-247-3369.
The Mini™ can be used for hand washing
type applications in the U.S. and Canada:
– Restroom sinks in commercial/industrial
facilities and homes
– Kitchen areas in commercial /industrial
facilities and homes
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English
6. The Mini™ is designed for installation using
two (2), 3/8" OD Tube Outlet.
7. When all plumbing work is completed,
check for leaks and take corrective
action before proceeding.
Electrical connection
WARNING: BEFORE BEGINNING ANY
WORK ON THE ELECTRIC INSTALLATION,
BE SURE THAT THE MAIN BREAKER PANEL
SWITCH IS “OFF“ TO AVOID ANY DANGER
OF ELECTRIC SHOCK. ALL MOUNTING AND
PLUMBING OF THE UNIT MUST BE COMPLETED
BEFORE PROCEEDING WITH ELECTRICAL HOOK-
UP. WHERE REQUIRED BY LOCAL, STATE OR
NATIONAL ELECTRICAL CODES THE CIRCUIT
SHOULD BE EQUIPPED WITH A GROUND FAULT
INTERRUPTER. AS WITH ANY ELECTRIC APPLI-
ANCE, FAILURE TO ELECTRICALLY GROUND
UNIT MAY RESULT IN SERIOUS INJURY OR
DEATH.
Voltage
Mini™ 3: 110 - 120V
Mini™ 4: 208, 220 - 240V
Mini™ 6: 208, 220 - 240V
WARNING: INSTALLING A MINI™ 3 ON
A 208V OR 220 - 240V CIRCUIT WILL
DESTROY THE HEATING ELEMENT. THIS
IS NOT COVERED UNDER WARRANTY.
1. All electrical work must comply with national
and applicable state and local electrical
codes.
2. The Mini™ should be connected to a properly
grounded dedicated branch circuit of proper
voltage rating. In installations with several Mini™
units, each unit requires an independent circuit.
Please refer to the technical data table for the
correct wire and circuit breaker size.
3. The "pigtail" must be fed into the electrical
junction box. Then feed wires through strain
relief clamp and tighten clamp down on wire.
Connect the live wires L/L or N/L to the black
and brown wire on the units "pigtail". Con-
nect the ground wire to the green/yellow
wire on the "pigtail".
4. The unit may also be installed using an outlet
and plug with the correct voltage and am-
perage rating.
Putting the water heater into
operation
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.
Air in the cold water pipe may destroy
the bare-wire heating system of the
Mini™. If the water supply to the Mini™
has been interrupted, for example due
to the risk of frost or work on the water
pipes, the following steps must be car-
ried out before the system is used again:
1. Turn off circuit breaker or unplug unit
if unit was installed with a plug.
2. Open a hot water tap downstream of
the device for as long as is necessary
for the device and the cold water pipe
to be freed of air.
3. Turn on circuit breaker or plug unit
back in.
26_02_02_0436
2
1
Instruct User
Explain the function 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, electrical shock).
• Hand over these instructions for fu-
ture reference
• In order to obtain proper temperature
control at a single spout mixer-type
faucet, restrict cold water flow to
faucet by partially closing the cold
water shut-off valve under the sink
until cold water and hot water flow
rates are approximately the same.
Normal maintenance
STIEBEL ELTRON Mini™ tankless heaters
are designed for a very long service life.
Actual life expectancy will vary with wa-
ter quality and use. The unit itself does
not require any regular maintenance.
However, in order to ensure consistent
water flow rate, 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 Mini™
has a built in filter screen that should be
cleaned from time to time. In order to do
this, turn off the cold water supply at the
isolating valve. Unscrew the cold water
connection, clean screen and put the
screen, back into their original
position.
WARNING: OTHER THAN THE FIL-
TER SCREEN, THE Mini™ DOES NOT
CONTAIN ANY PARTS SERVICEABLE BY THE
LAY PERSON. IN CASE OF MALFUNCTION
PLEASE CONTACT A LICENSED PLUMBER
OR ELECTRICIAN.
A
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Model Mini™ 3 Mini™ 4 Mini™ 6
Phase 1 1 1
Voltage V 110-120 208 220-240 208 220-240
Wattage kW 3.0 2.6 3.5 4.3 5.7
Amperage A 25 12.6 15.2 20 24.7
Min. required circuit breaker size A 30 20 20 30 30
Recommended wire size AWG copper 10 12 12 10 10
Recommended inlet temperature ºF / ºC 41-77 / 5-25
Min. water flow to activate unit GPM / Lmin 0.5 / 2.0 0.5 / 2.0 0.85 / 3.2
Nominal water volume Gal / L 0.1 / 0.026
Working pressure PSI / bar 150 / 10
Tested to pressure PSI / bar 300 / 20
Weight lbs / Kg 3.44 / 1.56
Dimensions height in / cm 6.5 / 16.5
width in / cm 7.5 / 19.0
depth in / cm 3.25 / 8.2
Water connections for 3/8" O.D. flex connector
Heating system bare wire
Technical Data
- Tankless water heaters are considered a non-continuous load
- Conductors should be sized to maintain a voltage drop of less then 3% under load
Symptom Possible cause Solution
No hot water despite fully opened hot
water faucet. With audible "click" from unit
when you turn the hot water on or off.
No electrical power. Check the circuit breaker, check for correct
voltage at the units wiring block.
No hot water and no "click". The turn on flow rate needed to switch on
the heating element has not been reached.
Clean the faucet aerator and inlet filter
screen.
Troubleshooting
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English
WARRANTY
RESIDENTIAL & COMMERCIAL WARRANTY: STIEBEL ELTRON WARRANTS TO THE ORIGINAL OWNER THAT THE Mini™ TANK-
LESS ELECTRIC WATER HEATER WILL BE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS FOR A PERIOD OF THREE
YEARS FROM THE DATE OF PURCHASE. SHOULD THE PART(S) PROVE TO BE DEFECTIVE UNDER NORMAL USE DURING
THIS PERIOD, STIEBEL ELTRON, INC. WILL BE RESPONSIBLE FOR REPLACEMENT OF THE DETECTIVE PART(S) ONLY. STIEBEL
ELTRON, INC. IS NOT RESPONSIBLE FOR LABOR CHARGES TO REMOVE AND/OR REPLACE THE DEFECTIVE PART(S), OR ANY
INCIDENTIAL OR CONSEQUENTIAL EXPENSES.
SHOULD THE OWNER WISH TO RETURN THE TANKLESS ELECTRIC WATER HEATER FOR REPAIR, THE OWNER MUST
FIRST SECURE WRITTEN AUTHORIZATION FROM STIEBEL ELTRON, INC. THE OWNER SHALL BE REQUIRED TO
SHOW PROOF OF PURCHASE DATE, AND TO PAY ALL TRANSPORTATION COSTS TO RETURN THE DEFECTIVE
PART(S) OR TANKLESS ELECTRIC WATER HEATER FOR REPAIR OR REPLACEMENT. WARRANTY IS VOID IF WATER
HEATER HAS BEEN INSTALLED OR USED IMPROPERLY OR IF DESIGN HAS BEEN ALTERED IN ANY WAY.
STIEBEL ELTRON, INC.
17 West Street
West Hatfield, MA 01088
PHONE: [phone]
FAX: [phone]
E-Mail [email protected]
www.stiebel-eltron-usa.com
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STIEBEL ELTRON, INC.
17 West Street
West Hatfield, MA 01088
PHONE: [phone] or 413-247-3380
FAX: [phone]
E-Mail [email protected]
www.stiebel-eltron-usa.com