18
HM 6Split
HM 12Split
When connecting to a system with thermostatic
valves on all radiators/underfloor heating pipes, use
the appropriate hydraulic solutions which ensure the
proper heating medium volume and minimum, undis-
turbed flow. See the subsection “Buffer vessel” and
“Minimum system flow”.
The unit comes with a BT25 sensor that must be in-
stalled on an external supply pipeline at a distance
of min. 1 m from HM 6Split / HM 12Split along the
pipeline. However, in the case of a system equipped
with a buffer, the BT25 sensor should be installed in
the buffer or in a place ensuring the correct reading of
the supply temperature to the heating system. In the
case of installation with a buffer in a parallel system,
it is recommended to move the BT71 sensor to the
bottom of the buffer.
Docking the climate system
The system can be expanded to include additional heat-
ing/cooling circuits, provided an additional accessory
board EP Split is used. Once the card has been put into
use, an additional heating/cooling circuit can be activat-
ed using the controller.
Connecting the 2-pipe cooling operation
system
Connecting the 4-pipe cooling operation
system
In the 2-pipe cooling degree minutes are counted ac-
cording to BT25.
Docking an additional climate system
Additional accessories and the connection options and
methods for these are described in the instructions for
the accessories.
The principle of a 2-pipe system is to use the same
circuit for cooling and/or heating (2-pipe cooling dia-
gram). When cooling is activated, cooling works by
default in the system 2-pipe.
he operating principle of the 4-pipe system is to use
separate heating and cooling circuits. In the 4-pipe sys-
tem, a cooling tank is required. The BT64 sensor should
be placed in the buffer vessel or on the cooling flow
pipeline. BT64 is connected at the AUX inputs. Selec-
tion of the 4-pipe system can be found in the SERVICE
section, menu 5.2.4.
Section 4 |
Pipe connections
-BP4
HS1
-GP12
-BT63
-BT25
-BT71
-QN10
P
-BT12
-BT3
P
-BT15
SHB10
XL1
XL2
-BP4
HS1
-GP12
-BT63
-BT25
-BT71
-QN10
P
-BT12
-BT3
P
-BT15
SHB10
XL1
XL2
-BT2
-BT3
-QN25
-GP20
AA25
-BP4
HS1
-GP12
-BT63
-BT71
-QN10
-QN12
P
-BT12
-BT3
P
-BT15
SHB10
XL1
XL2
-BT64
-GP13
-BT25
-GP10
-BP4
HS1
-GP12
-BT63
-B
-AA25
T25
-BT2
-BT3
-BT71
-QN10
-QN25
P
-BT12
-BT3
P
-BT15
SHB10
XL1
XL2
-GP20
-GP10
-BT71
