Nibe VVM 300 - Pipe Connections

14 NIBE VVM 300
Installation
LEK
A
r
t.n
r
.
611??
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2
1
bar
3
04
Gammalt
40
16
General information for the installer
Transport and storage
VVM 300 must be transported and stored upright and dry.
The VVM 300 may, however, be carefully laid on its back
when being moved into a building.
Maximum boiler and radiator volumes
The volume of the expansion
vessel (85) is 12 litres and it is
pressurised as standard to 0.5
bar (5 mvp). As a result, the
maximum permitted height “H”
between the vessel and the
highest radiator is 5 metres; see
figure.
If the standard initial pressure in
the pressure vessel is not high
enough it can be increased by
adding air via the valve in the
expansion vessel. The initial
pressure of the expansion vessel
must be stated in the inspection document.
Any change in the initial pressure affects the ability of the
expansion vessel to handle the expansion of the water.
The maximum system volume excluding the boiler at 80 °C
is 140 litres at the above initial pressure.
Erecting the heat pump
It is recommended to install the electric boiler in a room
with existing floor drainage, most suitably in utility room
boiler room.
The unit can be aligned using the adjustable feet.
Route pipes so they are not fixed to an internal wall that
backs on to a bedroom or living room.
Inspection of the installation
Current regulations require the heating installation to be
inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person and should
be documented. The above applies to installations with a
closed expansion vessel. If the electric boiler or the expan-
sion vessel is replaced, the installation must be inspected
again.
The adjustment screw
General information for the installer
Electric boiler mode
VVM 300 can be set in electric boiler mode from here. This
mode means the heat pump is blocked, but all other com-
ponents function as normal. This mode can be activated
if a fault is discovered with the heat pump or if the heat
pump is not installed. Summer mode cannot be activated
in electric boiler mode.
Two different operating modes are possible.
Option 1. Electric boiler operation
Select “Service” in menu 8.1.1.
■
Select “Off” in menu 9.3.12 directly after start up ■
to prevent the charge pump from running.
Select “0” in menu 9.1.2.
■
Select “Yes” in menu 9.3.2. ■
Option 2. Standby mode “ ”
Note! The charge pump (40) will run continuously in
this mode.
If the outdoor sensor is not connected, this mode should
be used. In mode ”
”, electronic control is discon-
nected. The display is off.
The automatic heating control system is not operational,
so manual shunt operation is required. This is done by
turning the adjustment screw to “manual mode” and then
turning the shunt knob to the desired position.
The immersion heater output is limited to 4 kW and the
circulation pump (16) and charge pump (40) operate con-
tinuously.
When returning to normal mode do not
forget to reset the shunt knob to its origi-
nal position by turning the adjustment
screw to “A”.
NOTE!
H
If FIGHTER 2020 is not docked, the charge
pump (40) will suffer damage when running.
NOTE!