1 (9)
Pipe installation
Installation should be carried out according to the
applicable regulations and standards.
The boiler should be assembled indoors, moun-
ted to a wall or similar with the pipe connections
underneath.
The ambient temperature must not exceed 30°C.
The gap between the underside of the boiler and
the surface beneath it must be at least 300 mm to
enable electric cartridges to be replaced, if neces-
sary.
Hard, calciferous water is not suitable for use with
this heating system. To avoid corrosion damage
the pH value should not be too low.
The blow-off pipe from the electric boiler safety
valve flows into a drip tray in the boiler cabinet.
The installation inspection should be carried out
according to the applicable regulations on a unit
with a sealed expansion vessel, before the unit is
operated. The inspection should be conducted by a
suitably qualified person. The replacement of parts
and the expansion vessel must not occur without
a repeat inspection of the installation.
A counter torque wrench should be used during
connection to avoid damaging the internal piping.
Design
LK Electric Boiler 4,5 kW is a wall-mounted elec-
tric boiler, intended primarily for low-temperature
heating systems, e.g. under floor heating.
LK Electric Boiler 4,5 kW is delivered as a complete
unit. The boiler is ready for use once the water and
electricity are connected.
The boiler includes:
• Thermostat
• Overheating (maximum safe temperature)
protection
• Indication power on and triggered overhea-
ting (maximum safe temperature) protection
• Control switch
• Circulation pump, Grundfos UPM3 Auto L
15-50
• Expansion vessel
• Pressure gauge
• Thermometer
• Safety valve, 2,5 bar
• Automatic air bleeding valve
• Bypass valve
The electric boiler is not fitted with a water heater,
this is installed separately.
Function/Requirements
The boiler output meets the heat requirements
for up to 90 m² of living space, depending on the
insulation and ventilation. Depending on the con-
nection the boiler can supply 1,5, 2,25, 3 or 4,5 kW.
The boiler is controlled by an in-built thermostat.
If necessary, the boiler can also be controlled by an
external thermostat, for more information please
refer to the heading “External switching/room
thermostat”.
Assembly
The boiler is mounted to the wall, or in a cabinet.
The boiler dimensions 420 x 700 x 200 mm (W x H
x D) mean that it can be installed in most kitchen
cabinets.
LK Electric Boiler - 4,5
EN.33.C.111.1804
Assembly instructions | LK Electric Boiler - 4,5
