EN.33.C.39.2022-01-14
Assembly instructions | LK Electric Portable Boiler
a blunt chisel e.g. TX10 or H2.5 when resetting
In the event of a repeated overheating, determine
the cause of the fault and x it before restarting.
Before restarting the boiler
• Check that the pump can rotate by turning
the rotor with a screwdriver in the center
hole of the pump.
• Check that the overheating protection is not
tripped. Press the RESET-button (12) under
the middle plastic screw with the red O-ring.
• Check that the boiler is water-lled and well
vented.
Circulation Pump
For setting up the circulation pump, see separate
instruction ”Grundfos UPM3 Auto 15/70”. Note
that the pump is advantageously set to work with
constant pressure and that this must be set manu-
ally according to separate instructions.
QR code for assembly instruction UPM3
Alarm codes
In the event of an operating problem then a fault
code will be displayed as below.
Foult codes circulation pump
Display Indication Operation Action
Red LED,
Yellow LED
#5
Blocked
rotor
False start
was 1.33 s.
Wait or
release rotor/
impellerr*
Red LED,
Yellow LED
#4
Too low
voltage
Only one
warning, the
pump oper-
ates as normal
Check the
voltage to the
pump
Red LED,
Yellow LED
#3
Electric
fault
Pump stops
because of
low voltage or
serious fault
Check voltage
to pump / Re-
place pump/
impeller
*Release impeller using screwdriver PH2. Break the
voltage to the pump. Insert the screwdriver into the
center hole of the drive side, press the screwdriver in
about 5 mm, then rotate forward /backward until the
impeller loosens.
Installation
The boiler should be placed indoors/under a roof
and fully protected from rain. The integrated
safety package including automatic air-bleed
valve, safety valve and connecting hoses, must
be installed as shown in the product diagram (see
above). Relevant building standards and hot wa-
ter installation standards must be adhered to.
The safety valve’s outlet’s functioning must be
ensured in the appropriate manner; refer to cur-
rent hot water installation standards. No thermo-
meter is included in the standard kit. However, a
thermometer should be mounted on the pipe after
the boiler. The heating system must be arranged
so that there is always a ow through the elec-
trical cartridge. Check to see that one or more of
the heating loops are always open.
Switching on
Before switching on, check to see that the hea-
ting system is lled with water, air-bled and that
the system’s operating pressure is sucient.
Check to see that the circulation pump is run-
ning by listening to and testing the various pump
speed settings.
Thermostat operation
Temperature regulation is via the boiler’s opera-
tional thermostat (constant output temperature).
The thermostat can be set up to a maximum of 60
ºC. Monitor the output temperature by means of
a thermometer and compare it to the set tempera-
ture.
Overheating protection
Note!
Resetting is possible after the boiler has
cooled down to approx. 65 ºC.
The boiler is provided with built in overheating
protection, which cuts o the power at approx.
80 ºC and att temperatures < −5 ºC. To reset the
overheating protection function, press the RE-
SET-button (12) under the middle plastic screw
with the red O-ring. Press the button hard with
2 (3)
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