INSTALLATION
MOUNTING
Install the floor stand on the centre of the water heater as
illustrated on page 14.
M8 screws and nuts are supplied.
The water heater must be installed horizontally in the floor
stand (UL4) and can be aligned using the adjustable feet
(UL1).
The water heater must be placed in the floor stand so that
the arrow on the "NOTE" sign points straight up.
When installing, ensure that there is sufficient space for re-
moving the thermostat or immersion heater in front of the
junction box (approx. 500 mm).
PIPE INSTALLATION
NOTE
Pipe installation must be carried out in accordance
with current norms and directives.
NIBE EL has complete set of valves installed at the factory,
comprising a mixing valve, shut-off valve, non-return valve,
safety valve and drain valve.
The water heater is supplied with compression ring couplings
for copper or plastic pipes. Internal support bushes must be
fitted when a plastic or annealed copper pipe is used.
An overflow pipe must be routed from the safety valve to a
suitable drain. The dimensions of the overflow pipe must be
the same as those of the safety valve (Ø 15 mm). The pipe
must be routed so as to prevent water pockets, and must
be frost-proof, well supported and not located close to
electrical components.
Ensure that incoming water is clean. When using a private
well, it may be necessary to supplement with an extra water
filter.
If uncertain, contact a plumber alternatively see applicable
standards.
Filling
The water heater must be filled with water before the mains
supply is switched on. Filling takes place as follows:
•Check that the vent screw (QM5) is tightened.
•Check that the safety valve (FL1) is closed.
•Open the shut off valve by turning the knob (QM35) anti-
clockwise .
•Bleed the water heater by opening a hot water tap in the
system. This can be closed when only water comes out
of the tap. The water heater is now filled and the power
can be switched on.
Setting the mixer valve
Increase/decrease the tap water temperature by turning
the mixer valve knob (FQ1) anti-clockwise/clockwise. Setting
range approx. 40 – 65 °C.
ELECTRICAL INSTALLATION
All electrical connections must be carried out by an author-
ised electrician.
NIBE EL must be installed via an isolator switch. The cable
area has to be dimensioned based on the fuse rating used.
Connect incoming supply to the terminal block (X1) according
to the electrical wiring diagram.
The connection cable must have strain relief.
The water heater is supplied with the power output 3 kW 3-
phase, but can also be converted to 6 kW. The water heater
can also be connected to 230 V (220 V)~ single-phase if re-
quired, but the power output is then limited to 2.0 kW.
NOTE
The water heater must be completely filled with
water before it is switched on.
Electrical circuit diagram
Setting thermostat
For optimum operating conditions and to prevent bacterial
growth, we recommend a setting of 60°C (max. approx.
80°C).
13NIBE EL | EN