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Post adjustment and venting
Pump adjustment, automatic operation
Brine side
The brine pump must run at the correct speed for the
correct flow in the brine system. F1145 has a brine pump
that can be automatically controlled in standard mode.
Certain functions and accessories may require that they
are run manually and the correct speed must then be
set, see section Pump adjustment, manual operation.
If several F1145 are installed in a master/slave configur-
ation, all F1145 must be the same size (e.g. 10 kW) for
the automatic control to work. If the installation contains,
e.g. one 8 kW and one 10 kW, manual operation adjust-
ments must be made, see page 33.
The automatic control occurs when the compressor is
running and it sets the speed of the brine pump to obtain
the optimal temperature difference between the supply
and return lines. For passive cooling operation, for ex-
ample, the brine pump must run at a set speed, which
is set in menu 5.1.9
Heating medium side
The heating medium pump must run at the correct speed
for the correct flow in the heating medium system, F1145
has a heating medium pump that can be automatically
controlled in standard mode. Certain functions and ac-
cessories may require that they are run manually and
the correct speed must then be set, see section Pump
adjustment, manual operation.
This automatic control occurs when the compressor is
running and sets the speed of the heating medium
pump, for the present operating mode, to obtain the
optimal temperature difference between the supply and
return lines. During heating operation, the set DOT (di-
mensioned outdoor temperature) and temperature dif-
ferential in menu 5.1.14 are used. If necessary, the max-
imum speed of the circulation pump can be limited in
menu 5.1.11.
Pump adjustment, manual operation
Brine side
To set the correct flow in the brine system the correct
speed must be set for the brine pump. F1145 has a brine
pump that can automatically controlled, but if a manual
speed is desired it must be set according to the following
information and diagram. For manual operation "auto"
must be deactivated in menu 5.1.9.
The flow must have a temperature difference between
brine out (BT11) and brine in (BT10) of 2 - 5 °C when the
system is balanced (suitably 5 minutes after compressor
start). Check these temperatures in menu 3.1 "service
info" and adjust the brine pump (GP2) speed until the
temperature difference is achieved. A high difference
indicates a low brine flow and a low difference indicates
a high brine flow.
Set the speed of the brine pump in menu 5.1.9, see page
48.
Read off what speed the brine pump should have during
manual operation from the diagram below.
NIBE F1145
90
80
70
60
50
40
30
P60%
20
60%
P40%
10
40%
0
0 0,05 0,10 0,15 0,20 0,25 0,30 0,35 0,40 0,45 0,50
Tillgängligt tryck
Available pressure, kPa
Electrical output, W
Eleffekt
P
Tillgängligt tryck, kPa / Eleffekt, W
F1145 5 kW
100
Pumpkapacitet, köldbärarsida för F1145/F1245 5kW.
90
Available pressure, kPa
Tillgängligt tryck, kPa
80
Electrical output, W
Eleffekt, W
70
100
60
90
50
80
40
70
30
P60%
60
20
60%
P40%
10
50
40%
0
40
0 0,05 0,10 0,15 0,20 0,25 0,30 0,35 0,40 0,45 0,50
30
20
Tillgängligt tryck
10 0
Eleffekt
0
P
0,0
0,05
0,10
0,15
Tillgängligt tryck, kPa / Eleffekt, W
100
F1145 6 kW
90
Pumpkapacitet, köldbärarsida för F1145/F1245 6kW.
80
Available pressure, kPa
Tillgängligt tryck, kPa
70
Electrical output, W
Eleffekt, W
60
100
50
90
40
80
30
P60%
70
60%
20
P40%
60
10
40%
0
50
0 0,05 0,10 0,15 0,20 0,25 0,30 0,35 0,40 0,45 0,50
40
30
Tillgängligt tryck
20
10
Eleffekt
P
0
0,0
0,05
0,10
0,15
Tillgängligt tryck, kPa
F1145 8 kW
Pumpkapacitet, köldbärarsida för F1145/F1245 8kW.
Eleffekt, W
Available pressure, kPa
Tillgängligt tryck, kPa
200
Electrical output, W
Eleffekt, W
180
100
160
90
140
80
120
70
100
80
60
60
50
40
40
20
30
0
0
0,10
0,20
0,30
20
10
Tillgängligt tryck
0
Eleffekt
P
0,0
0,05
0,10
0,15
Tillgängligt tryck, kPa
Eleffekt, W
200
180
160
140
120
100
Chapter 6 |
P60%
80
60
40
20
60%
P100%
P80%
100%
80%
Flöde
l/s
P100%
P80%
100%
80%
P80%
P80%
Flöde
P60%
80%
l/s
P60%
80%
60%
P40%
60%
P40%
40%
40%
0,20
0,25
0,30
0,35
0,40
P100%
P80%
100%
80%
P80%
Flöde
l/s
80%
P60%
60%
P40%
40%
0,20
0,25
0,30
0,35
0,40
0,45
P100%
P90%
P70%
P80%
90%
100%
P50%
70%
50%
Flöde
80%
P60%
l/s
0,40
0,50
0,60
60%
P40%
40%
0,20
0,25
0,30
0,35
0,40
0,45
P100%
P90%
P80%
P70%
Commissioning and adjusting
Flöde
80%
100%
F11
P100%
P100%
F11
100%
100%
0,45
0,50
Flow l/s
Flöde l/s
P100%
F11
100%
0,50
Flow l/s
Flöde l/s
P100%
F11
100%
100%
0,50
Flow l/s
Flöde l/s
33
F11
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