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6
Commissioning the device
NOTE
The initial commissioning of the instantaneous water
heater must be performed by a licensed professional.
All required information for the proper operation of
the device must then be made available to the cus-
tomer.
Open the inlet valve.
Check that all connections are tight.
Switch on the fuses in the distribution system.
Initial commissioning
NOTE
To start, the device needs a minimum water pressure
and minimum flow rate (see chapter 9.).
Open the hot water tap completely and let the water
run.
First, the LED flashes (twice a second) for venting op-
eration.
For safety reasons, the device only starts heating the
water after approx. 1 minute (LED lights up).
If the device does not heat the water:
Replace the aerators in domestic hot water taps.
Remove the flow limiter of the shower.
Open the closure (A) and clean the filter (B) of the
device (see next figure)
Remove the flow limiter (C) of the device (see next
figure).
Tell users how the device works and show them how
to operate it.
Hand all device documents to the user.
NOTE
If the device does not switch on due to the volume
flow in the inlet being too low, remove the flow limiter
of the device.
EN-20
Removing the flow limiter of the device
7
Maintenance
ATTENTION!
This must only be performed by licensed
professionals. Disconnect the device from
the power supply and shut off the water sup-
ply before carrying out any maintenance
work.
Inspection, maintenance and repair
Inspection, maintenance and repair may only be
performed by authorised professionals.
Only use genuine spare parts from the manufac-
turer. No liability is accepted for damage caused
by spare parts not supplied by the manufacturer.
Replace seals removed during maintenance work
with new ones.
NOTE
After performing maintenance work, press the reset
key See section "2.4 Device overview" to restart the
device.
6721873500 (2023/07)
DEE 1521, DEE 2127
C
B
A
www.dimplex.de
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