Nibe S1155 Installer Manual page 30

Heating medium side
To set the correct flow in the heating medium system,
the heating medium pump must run at the correct
speed. S1155 has a heating medium pump that can be
automatically controlled in standard mode. Certain
functions and accessories may require it to run manually
and the correct speed must then be set.
This automatic control occurs when the compressor is
running and sets the speed of the heating medium
pump, for the present operating mode, so the optimum
temperature difference between the supply and return
lines is achieved. During heating operation, the set DOT
(dimensioned outdoor temperature) and temperature
differential in menu 7.1.6.2 are used. If necessary, the
maximum speed of the circulation pump can be limited
in menu 7.1.2.2.
Pump adjustment, manual operation
Brine side
S1155 has a brine pump that can be controlled automat-
ically. For manual operation: deactivate "Auto" in menu
7.1.2.7 and then set the speed according to the diagram
below.
Caution
Tillgängligt tryck, kPa
Eleffekt, W
When an accessory for passive cooling is used,
80
the brine pump speed must be set in menu
7.1.2.7.
70
60
Set the pump speed when the system has come into
50 balance (ideally 5 minutes after compressor start).
Adjust the flow so that the temperature difference
40
between brine out (BT11) and brine in (BT10) is between
30
2 - 5 °C. Check these temperatures in menu 3.1 "Oper-
ating info" and adjust the brine pump's (GP2) speed until
20
the temperature difference is attained. A high difference
10
indicates a low brine flow and a low difference indicates
0
a high brine flow.
0,0 0,05 0,10 0,15
Tillgängligt tryck, kPa
Available pressure, kPa
Electrical output, W
p Eleffekt, W
S1155 6 kW
Available pressure
(kPa)
160
140
120
100
80
60
40
20
P40%
40%
0
0 0,1 0,2 0,3
30 Chapter 6 | Commissioning and adjusting
P60%
2
P40%
1
0,20 0,25 0,30 0,35
Output
(W)
P 100%
P80%
100%
P60%
80%
60%
0,4 0,5 0,6 0,7
Flow
Flöde
(l/s)
S1155 12 kW
Available pressure
(kPa)
200
180
160
140
120
100
80
60
40
20
0
0,0 0,1
Heating medium side
S1155 has a heating medium pump that can be con-
trolled automatically. For manual operation, deactivate
Tillgängligt tryck, kPa
"Auto" in menu 7.1.2.2 and then set the speed according
Eleffekt, W to the diagrams below.
80
The flow must have a suitable temperature difference
for the operating case (heating operation: 5 - 10 °C, hot
70
water generation: 5 - 10 °C, pool heating: approx. 15 °C)
60
between controlling supply temperature sensor and re-
50 turn line sensor. Check these temperatures in menu 3.1
"Operating info" and adjust the heating medium pump
40
(GP1) speed until the temperature difference is attained.
30
A high difference indicates a low heating medium supply
and a low difference indicates a high heating medium
20
P100%
supply.
10
Read off what speed the heating medium pump should
0
have during manual operation from the diagrams below.
P80%
0,0 0,05 0,10
4 Tillgängligt tryck, kPa
Available pressure, kPa
Electrical output, W
Eleffekt, W
p
3
S1155 6 kW
Available pressure
(kPa)
80
0,40 0,45
70
Flöde l/s
60
50
40
30
20
160
10
140
0
0 0,05 0,1
120
100
80
60
40
20
0
P80%
P60%
80%
P40%
60%
40%
0,2 0,3 0,4 0,5
P40%
1
0,15 0,20 0,25
P80%
80%
60%
P60%
40%
P40%
0,15 0,2 0,25 0,30
Output
(W)
200
P100%
180
160
140
120
100
80
100%
60
40
20
0
0,6 0,7
Flow
Flöde
(l/s)
P100%
P80%
4
P60% 3
2
0,30 0,35 0,40 0,45
Flöde l/s
Output
(W)
80
70
P100%
60
50
100%
40
30
20
10
0
0,35 0,40
Flow
Flöde
(l/s)
NIBE S1155