Nibe FIGHTER 2010 Series, Installation And Maintenance Instructions Manual, Page: 20 / 36

Commissioning and adjusting
FIGHTER 2010
18
For the Installer
■
Modular cable (44) or thermostat/strap, terminal
(30) is disconnected.
■
The working switch is turned on.
■
Check that all incoming phases are energized.
■
Check that the miniature circuit-breaker (2) is on.
■
The compressor heater (25) must have been oper-
ational for
at least 6 hours before the compressor
start can be initiated. This is done by switching on
the control voltage and disconnecting the
modular
cable or thermostat/strap .
■
The display on the control card (34) shows C0/CC
F0 H1/H3 depending on the outdoor temperature.
When the thermostat or the like calls for
heating/hot water and FIGHTER 2010 is blocked
from starting by e.g. time conditions, C_ will flash
until starting is permitted. This will also be shown
until the
modular cable or thermostat/strap is
connected. During this period the compressor is
heated to increase the service life.
■
After 6-8 hours the modular cable, external
thermostats or strap on the input for hot water
and/or input for single step or double step ther-
mostat are connected
. See the section “Electri-
cal connections” ( Thermostat hot water, Single
step thermostat heating, Double step thermostat
heating
).
■
Restart SMO 10 or VVM 240.
■
FIGHTER 2010 now makes two starts of 5 sec-
onds at 1 minute intervals. This is done so that the
control system can measure the compressor cur-
rents.
This procedure means the heat pump corrects itself
for the incoming phase sequence.
After measuring the compressor currents, the com-
pressor starts after approximately 20 minutes.
■
Adjust the charge flow according to the diagram,
see the section “Adjustment, charge flow”
■
Fill in the commissioning report on page 2.
Start-up and inspection
NOTE!
The live external control must be
taken into consideration when
connecting.
Adjusting the temperature difference (
∆
T) between the
flow temperature and the return temperature.
This is easily done by using the temperatures mea-
sured in Channel 32 (flow temperature) less Channel
29 (return temperature). This temperature difference
(
∆
T) is adjusted with the help of the circulation pump
and control valve. Adjustment is performed with stable
operation about 5 minutes after start, or about 5 min-
utes after defrosting with a cold outdoor temperature.
The temperature difference shall be as in the diagram
below (+1- 2K).
Adjustment, charge flow
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
-10 -5 0 5 10 15 20
°
C
∆
T
6
2
1
3
4
5
1 35° heat medium flow stage 2
2 45° heat medium flow stage 2
3 55° heat medium flow stage 2
4 35° heat medium flow stage 1
5 45° heat medium flow stage 1
6 55° heat medium flow stage 1
Air is initially released from the hot water and venting
may be necessary. If bubbling sounds can be heard
from the heat pump, the circulation pump and radia-
tors, the entire system requires further venting. When
the system has stabilised (correct pressure and all the
air removed) the heating controls can be set at the
required value.
Readjustment,
heat medium side