Nibe VVM 300 User Manual

14 NIBE VVM 300
Installation
Pipe connections
General
Pipe installation must be carried out in accordance with
current norms and directives.
NOTE! When the circulation pump is running, the flow
in the radiator circuit must not be completely stopped. In
other words, in a system where the radiator flow might
stop because all thermostat valves are closed, there must
be a bypass valve to protect the circulation pump.
Total volume is 280 litres with 155 litres in the hot water
heater and 125 litres in the double jacketed space.
The pressure vessel in VVM 300 is approved for max 9.0
bar (0.9 MPa) in the heater and 2.5 bar (0.25 MPa) in the
double jacket space.
An overflow pipe should be routed from the overflow cup
(99) to an appropriate drain. The dimension of the over-
flow pipe must be the same as the waste water pipe, Ø 32
(98) and be routed downwards to prevent water pock-
ets and to be frost proof. The outlet of the overflow pipe
should be visible. See applicable norms.
Pipe connections
The pipe work must be flushed before
the electric boiler is connected, so that any
contaminants do not damage the
components parts.
NOTE!
Pipe connection of the heating system and
hot water
Pipe connection for VVM 300 is carried out as follows.
Connect flow line, radiator circuit (70) and return line, ra-
diator circuit (71) to the heating system.
Connect cold water connection (73) and hot water outlet
from heater (74) to the hot water pipe. If F20XX is not to
be connected (75) and (76) must be plugged.
LEK
A
rt.nr. 611?
?
?
2
1
bar
3
04
52
99
98
80
47
74
73 71
70
51
75
76

Nibe VVM 300 Specifications

General

Brand	Nibe
Model	VVM 300
Category	Boiler
Language	English