Nibe F1345 Service Manual page 13

Sensors etc.
Sensors connected internally
Name
BP1 High pressure pressostat
BP2 Low pressure pressostat
BP8 Low pressure transmitter
BT1* Outside sensor
BT3 Return pipe
BT6* Hot water, charging
BT7* Hot water, top
BT10 Brine in
BT11 Brine out
BT12 Condenser flow line
BT14 Discharge
BT15 Fluid pipe
BT17 Suction gas
BT25* External flow line
BT29** Oil temp.
BT50* Room sensor
BT71* External return line sensor
* Externally mounted (not included in outline diagram).
** Not on 24 kW.
F1345
Location
On the liquid line.
On suction gas line.
On suction gas line.
Outdoor, shaded location on north side
of the house.
On return line between circulation
pump (GP1) and condenser (EP2).
On accumulator tank lower section.
On accumulator tank top.
On incoming brine, at 24 - 30 kW before
circulation pump (GP2) and on 40 -
60 kW after externally installed circula-
tion pump.
On outgoing HTF after evaporator.
On the supply line after the condenser
((EP2).
On hot gas line after the compressor
(GQ10)).
On the fluid line after the condenser
((EP2).
On suction gas line before the com-
pressor (GQ10).
On the heating system supply line.
On the compressor.
In suitable indoor location.
On the heating system return line.
Function
Protects the compressor against pres-
sures that are too high.
Protects the compressor against pres-
sures that are too low.
Controls preheating of compressor in
relation to BT29.
Set point values for heating and cooling
demand calculation. Operating mode
change.
Stopping the compressor at high temp.
Start and stop of hot water charging.
Display only.
Stopping the compressor at high temp.
Stopping the compressor at low temp.
Stopping the compressor at high temp.
Stopping the compressor at high temp.
View.
View.
Calculating DM for heating and cooling.
Controls preheating of compressor in
relation to BP8.
Display of oil temperature during oper-
ation.
Correction of indoor temperature.
View.
Chapter 3 | System description 13