Nibe ELK 213, Installer Manual, Page: 8 / 24

General
The pipe installation must be carried out in accordance
with applicable standards.
A circulation pump must be used to ensure the flow
over the immersion heater. If the heating system valves
can close the circulation completely, the bypass valve
must be installed so that the flow through the electric
heater does not stop. In closed installations an approved
safety valve and pressure expansion vessel must be
used.
Caution
Also see the installer manual for your heat
pump/indoor module.
NOTE
The pipe work must be flushed before the
electric heater is connected, so that any con-
taminants do not damage the component parts.
DRAINING
If a drain valve is necessary, it can be installed in the
water heater's drain connection XL10). This connection
can also be used as a circulation pump connection. The
connection is plugged upon delivery.
SAFETY VALVE
In closed boiler installations, the safety valves must be
installed in connection with the highest part of the
electric heater, but not directly on the heater. The con-
nection line must rise continuously.
The safety valve must be "exercised" regularly, at least
four times a year.
NOTE
The pipe work must be flushed before the
electric heater is connected, so that any con-
taminants do not damage the component parts.
Pressure drop diagram
ELK 213
Flow
(kPa)
0
0 0,1 0,2 0,4 (l/s)
0,5
1
1,5
2
(kPa)
0,3 0,5 0,6
(l/s)
NIBE ELK 213 Chapter 3 | Pipe connections 8
3 Pipe connections