
Non-return valve
Install a non-return valve (RM22) between two T-pipe
connections to the shunt valve for the heating dump
(see the outline diagram).
Mixing valve, cooling dump
The shunt valve (QN18) is placed in the brine system via
the T-pipe connections according to the outline diagram.
■Connect the brine out from the heat pump
after the reversing valve (QN12) via the T-
pipe on port A on the shunt valve (opens
at increase signal).
■Connect the return line from the cooling
system to the common port AB on the
shunt valve (always open).
■Connect the brine in to the heat pump from the col-
lector via the T-pipe on port B on the shunt valve
(closes at reduce signal).
Mixing valve, heat dump
The shunt valve (QN36) is placed in the climate system
on the supply line from the heat pump via T-pipe connec-
tions according to the outline diagram.
■Connect the supply line to the circula-
tion pump, heating dump (GP20) and
the fan coil to the common port AB on
the shunt valve (always open).
■Connect the supply line to the climate
system on port A on the shunt valve (opens at increase
signal)
■Connect the return line from the fan coil to the supply
line to the climate system via the T-pipe to port B on
the shunt valve (closes at reduce signal).
Reversing valve, cooling/heating
The reversing valve (QN12) is placed in the brine system
on the supply line from the heat pump according to the
outline diagram.
■Connect the supply line to the cooling system
to port A on the reversing valve (opens at
signal)
■Connect the brine out from the heat pump
to the common port AB on the reversing
valve (always open).
■Connect the brine out to the collector to port B on the
reversing valve (normally open, motor in standby
mode).
Circulation pump, heat dump
Install the circulation pump (GP20) after the shunt valve
for the heating dump (QN36) on the supply line to the
fan coil.
Volume vessel
Install the volume vessel (CP21) for cooling between re-
versing valve (QN12), shunt valve (QN18) and cooling
system.
Temperature sensor
■Temperature sensor (BT57) is mounted on the return
to the heat pump in the collector after the T-pipe
connection from the cooling system return via shunt
valve (QN18).
■Temperature sensor (BT64) is mounted on the supply
line to the cooling system at the T-pipe connection to
the volume vessel (CP21).
■The temperature sensor (BT75) is located on the supply
line to the climate system after the heating dump.
Install the temperature sensors using cable ties, together
with the heat conducting paste and aluminium tape.
Then insulate with the enclosed insulation tape.
NOTE
Sensor and communication cables must not be
placed near power cables.
13ACS 45 | GB