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Pipe connections
General
NOTE
Pipes and other cold surfaces must be insulated
with diffusion-proof material to prevent condens-
ation. Where the cooling demand is high, fan
convectors with drip trays and drain connection
are needed.
The brine circuit must be supplied with a pressure expan-
sion vessel. If there is already a level vessel installed this
should be replaced.
Expansion vessel
The brine circuit must be supplied with a pressure expan-
sion vessel (membrane type). If there is already a level
vessel installed this should be replaced.
The pressure expansion vessel should be dimensioned as
set out in the diagram, to prevent operating disturbances.
The pressure expansion vessel covers the temperature
range from -10 °C to +20 °C for the brine at a pre-pres-
sure of 0,5 bar and the safety valve's opening pressure
of 3 bar. The brine side must normally be pressurised to
at between 1,0 and 1,5 bar.
50
40
30
20
10
0
0
100 200 300
16
All manuals and user guides at all-guides.com
400
500 600 700 800
900 1000
Outline diagram
Explanation
EB100
Heat pump
BT1
Temperature sensor, outdoor
BT6
Temperature sensor, hot water
HQ1
Particle filter
EP21
Climate system 2 (ECS 40/ECS 41)
AA5
Accessory card
BT2
Flow temperature sensor, extra climate sy-
stem
BT3
Return line sensor, extra climate system
GP20
Circulation pump, extra climate system
QN11
Shunt valve
EQ1
PCM 40/42
BT25
Temperature sensor, external flow line
EP6
Heat exchanger, cooling
GP13
Circulation pump, cooling
QN12
Reversing valve, cooling/heating
QN18
Mixing valve, cooling
RM1
Non-return valve
RM2
Non-return valve
Miscellane-
ous
BP6
Manometer, brine
CM1
Expansion vessel
CM3
Expansion vessel, brine
CP1
Accumulator tank with hot water coil
EP12
Collector
FL2
Safety valve, heating medium
QM12
Filler valve, brine
QM21
Vent valve, brine
QM31
Shut-off valve, heating medium flow
QM32
Shut off valve, heating medium return
QM34
Shut off valve, brine return
XL15
Filling set, brine
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
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