SYSTEM DIAGRAM
F1145 consists of heat pump, immersion heater, circu-
lation pumps and control system. F1145 is connected
to the brine and heating medium circuits.
In the heat pump evaporator, the brine (water mixed
with anti-freeze, glycol or ethanol) releases its energy
to the refrigerant, which is vaporised in order to be
compressed in the compressor. The refrigerant, of which
the temperature has now been raised, is passed to the
condenser where it gives off its energy to the heating
medium circuit and, if necessary, to any docked water
heater. If there is a greater need for heating/hot water
than the compressor can provide there is an integrated
immersion heater.
Connection, heating medium flowXL1
Connection, heating medium returnXL2
Connection, brine inXL6
Connection, brine outXL7
Connection, hot water heaterXL9
Dimensions and pipe
connections
620
600
560
70
1475
725*
725*
25-50
25
55
130
460
535
405
440
620
600
560
70
1475
725*
725*
25-50
25
55
130
460
535
405
440
PIPE DIMENSIONS
1715126-10(kW)Connection
3528(mm)(XL6)/(XL7) Brine
in/out ext Ø
2822(mm)(XL1)/(XL2) Heating
medium flow/return
ext Ø
2822(mm)(XL9) Connection, hot
water heater ext Ø
* Can be angled for side connection.
NIBE F1145Chapter 4 | Pipe connections16