Commissioning and adjusting
25
FIGHTER 1240
Air is initially released from the hot water and venting
may be necessary. If bubbling sounds can be heard
from the heat pump, 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 values.
Check the fluid level in the level vessel (85).
If the level has dropped, close the valve
under the vessel. You can then fill through
the connection at the top of the vessel. After
filling, open the valve again.
To raise the pressure, close the valve on the
incoming main pipe when the brine pump
(KBP) is running and the level vessel (NK) is
open, so that water is drawn in from the vessel.
The siphon principle is used to empty the water
heater. This can be done either via the drain valve on
the incoming cold water pipe or by inserting a hose
into the cold water connection.
Readjusting, collector side
Readjusting, heat medium side
The compressor in FIGHTER 1240-12 is of the scroll type.
It can only operate in one direction of rotation. Operating in
the wrong direction can damage the compressor.
To check that the direction of rotation is correct, carry
out the following:
■ Set the switch to 1.
■ Check the hot gas temperature in menu 5.11. The
temperature should increase by 15 °C within 30
seconds from compressor start.
■ If the temperature, on the other hand, remains the
same, the direction of rotation is incorrect. The noi-
se produced is also different when rotating in the
incorrect direction.
– Set the switch to 0 and cut the main power
supply.
– Swap the two incoming phases on the terminal block
for incoming electricity, -X9.
– Set the switch to 1 and repeat the rotation check.
Rotation check F1240-12 3x400 V
1. Check that the temperature limiter (25) has not
tripped.
2. Set the switch (8) to 1.
3. Adjust the Offset heating curve knob so there is no
heating requirement.
4. Select Service in menu 8.1.1.
5. Select On in menu 9.2.4.
6. Select On in menu 9.2.12. The brine pump runs
continuously for 10 days, and then returns to nor-
mal operations.
7. Check that the brine and heat medium systems
are vented.
8. Check that brine and heat medium pumps are
operational. If necessary help the pumps to start.
9. Check that the Brine temperatures in menu 5.0
correspond with the ground/rock temperature,
which indicate brine flow.
10. Select Off in menu 9.2.4.
11. Select the spring/autumn operating mode with
the operating mode button.
12. Adjust the Offset heating curve knob so there is a
heating requirement. The compressor will start.
13. If the heat pump is a FIGHTER 1240-12 3x400 V,
check the direction of rotation at start-up of the
compressor. See section “Rotation check F1240-
12 3x400 V”.
14. Read the brine temperatures in menu 5.0. The dif-
ference between these two temperatures should
be 2—5 °C when the system has come into bal-
ance. Adjust the flow with the knob on the brine
pump (35). A high difference indicates a low brine
flow. A low difference indicates a high brine flow.
The pump is
adjustable to adjust
brine flow.
16. Set the date and time in menu 7.1 and 7.2.
17. Fill in the commissioning report on page 2.
18. Select the auto operating mode using the
operating mode button.
19. Set the control system according to the needs of
the property. See section Settings - Heating.
15. Check the flow temperature on menu 2.0 and
return temperature on menu 2.7. The difference
between these two temperatures, with floating
condensing, should be 5 — 10 °C when the house
is being heated without additional heat. Adjust the
flow with the knob on the heating medium pump
(16). A high difference could depend on a low heat
medium flow. A low difference indicates a high
heat medium flow.
Start-up and inspection
NOTE!
The compressor must not be forced to start
with periods shorter that 1 start per 15 minutes.
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