Plumbing Connections; Electrical Connection - STIEBEL ELTRON Mini 2-1 Operation And Installation

INSTALLATION INSTRUCTIONS
7.2

Plumbing connections

NOTE: If soldering near the unit is necessary, please direct
the flame away from the housing of the unit in order to
avoid damage. Excessive heat from soldering on copper pipes near
the Mini may cause damage. All plumbing work must comply with
national and applicable state and local plumbing codes.
» 1. All plumbing work must comply with national and
applicable state and local plumbing codes.
» 2. A pressure reducing valve must be installed if the cold water
supply pressure exceeds 150 psi (10 bar).
» 3. Make certain that the cold water supply line has been
flushed to remove any scale and dirt.
» 4. Install isolating valve in cold water line as shown in
illustration . This allows the unit to be isolated for
C
maintenance purposes.
» 5. Cold water connection (inlet) is on the right side of the unit,
hot water connection (outlet) is on the left side of unit.
» 6. Tankless water heaters such as the Mini are not required
to be equipped with a Pressure and Temperature Relief Valve
(except in Massachusetts). If the local inspector will not pass
the installation without a P+T valve, it should be installed on
the hot water outlet side of unit.
» 7. The Mini is designed for connection to a braided stainless
steel hose with a 3/8˝ O.D. tube outlet.
14 | Mini Series Electric Tankless Water Heaters
™
» 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 hook-up.
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 a Mini 2-1, Mini 2.5-1, Mini 3-1, or Mini
3.5-1 on a 208 V or 220–240 V circuit will destroy the heating
element. This is considered improper installation and will void
your factory warranty.
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