Post Adjustment And Venting; Pump Adjustment, Manual Operation; Pump Adjustment, Automatic Operation - Nibe F1245 Installer Manual

Post adjustment and venting

Pump adjustment, automatic operation

Brine side
To set the correct flow in the brine system the correct
speed must be set for the brine pump. This heat pump
has a brine pump that can automatically controlled.
This automatic control occurs when the compressor is
running and automatically sets the speed of the brine
pump to obtain the optimal temperature difference
between the supply and return lines. For passive cool-
ing operation the brine pump must run at a set speed
which is set in menu 5.1.9.
Heating medium side
To set the correct flow in the climate system the correct
speed must be set for the heating medium pump. This
heat pump has a heating medium pump that can
automatically controlled.
This automatic control occurs when the compressor is
running and automatically 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 (dimensioned outdoor temperature) and
temperature differential in menu 5.1.14 are used in-
stead. If necessary the maximum speed of the circula-
tion pump can be limited in menu 5.1.11.
NIBE™ F1245

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. This heat pump
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 com-
pressor 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 differ-
ence indicates a high brine flow.
Read off what speed the brine pump should have
during manual operation from the diagram below.
Tillgängligt tryck
Eleffekt
P
F1245 5 kW
Available pressure, kPa
Electrical output, W Tillgängligt tryck, kPa / Eleffekt, W
100
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
F1245 6 kW
Tillgängligt tryck, kPa / Eleffekt, W
100
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
Chapter 6 |
P100%
P80%
100%
80%
Flöde
Flow
l/s
l/s
P100%
P80%
100%
80%
Flöde
l/s
Commissioning and adjusting 31