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
maximum speed of the circulation pump can be limited
in menu 5.1.11.
Heating medium side, manual operation
F1355 has heating medium pumps that can be automat-
ically controlled. For manual operation: deactivate “auto”
in menu 5.1.11 and then set the speed according to the
diagrams below.
The flow must have a suitable temperature difference
for the operating case (heating operation: 5 - 10 °C, hot
water generation: 5 - 10 °C, pool heating: approx. 15 °C)
between controlling supply temperature sensor and re-
turn line sensor. Check these temperatures in menu 3.1
“service info” and adjust the heating medium pump
(GP1) speed until the temperature difference is attained.
A high difference indicates a low heating medium supply
and a low difference indicates a high heating medium
supply.
Set the speed of the heating medium pump in the menu
5.1.11, see the Operating Manual.
F1355 28 kW
60%
80%
0
0 0,5 1,0 1,5 2,0 2,5
10
20
30
40
50
60
70
Tillgängligt tryck
(kPa)
Flöde
(l/s)
60%
100%
80%
40%
100%
40%
1 cirkulationspump
2 cirkulationspumpar
80
90
External available pressure (kPa)
Flow, l/s
0
0,0 0,2 0,4 0,6 0,8 1,0 1,2
10
20
30
40
50
60
100
Eleffekt per cikulationspump (W)
Flöde
(l/s)
100%
80%
60%
40%
90
80
70
Electrical output per circulation pump (W)
Flow, l/s
READJUSTING, VENTING, HEAT MEDIUM
SIDE
Air is initially released from the hot water and venting
may be necessary. If gurgling sounds can be heard from
the heat pump or climate system, the entire system will
require additional venting.
READJUSTING, VENTING, COLLECTOR SIDE
Expansion vessel
If a pressure expansion vessel (CM3) is
used, the pressure level is checked. If the
pressure drops, the system should be replen-
ished.
POST ADJUSTING THE ROOM
TEMPERATURE
If the required room temperature is not obtained, read-
justment may be necessary.
Cold weather conditions
• When the room temperature is too low, increase
"heating curve" in menu 1.9.1.1 by one increment.
• When the room temperature is too high, reduce
"heating curve" in menu 1.9.1.1 by one increment.
Warm weather conditions
• When the room temperature is too low, increase
"temperature" (offset heating curve) in menu 1.1.1 by
one increment.
• When the room temperature is too high, reduce
"temperature" (offset heating curve) in menu 1.1.1 by
one increment.
NIBE F1355Chapter 6 | Commissioning and adjusting36
To Next Page
Loading...
