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HM 6Split
HM 12Split
The HM 6Split / HM 12Split indoor unit together with
the L Split air source heat pump outdoor unit provides
a complete climate system. The L Split outdoor unit
provides thermal energy for heating domestic water,
powering the heating system, heating swimming
pools and cooling using free energy contained in the
outside air, working efficiently in the range of low
temperatures down to -20 ° C.
The connection of the outdoor unit, hot water tank
and the indoor unit HM 6Split / HM 12Split, with a
system of pipes filled with refrigerant, protects the
connection against freezing in the event of interrup-
tions in the electric power supply to appliances. The
system’s operations are controlled using an advanced
controller.
System diagram
NOTE
HM 6Split / HM 12Split is equipped with all temperature
sensors as standard. The BT25 sensor must be installed
on its own in the external pipeline, and in some systems
the sensors must be moved to other parts of the sys-
tem. For location of the sensors, see the relevant point
on docking the system.
NOTE
In the event that the water volume of the central heating
system is increased using a buffer vessel, you will need
to check the system volume and possibly increase the
volume of the existing expansion vessel.
CAUTION
If connection AA3: X7 is used for another purpose, an
additional AA5 accessory card is required to connect the
hot water circulation pump control.
Hot water circulation
Connecting the control of the hot water circulation pump
The hot water circulation pump can be connected in
two configurations:
• AA3:X7: NO (L), X1:0 (N), X:PE (PE)
1
0 PE 2
L
N
PE
3
2
3
4
5
6
7
8
9
Expansion Card
External
GP11
X1
AA5-X9
Accessory board AA5 External
PE
L N
X1
L
L
N
N
PE
PE
1 2 3
External
X1
SHB 10
GP11
AA3:X7
C NO NC
AA3
-
X7
P
• in case AA3:X7 output is already in use, GP11 con-
nect to accessory board AA5 (not included in HM
6Split / HM 12Split) on block AA5-X9:8 (230V),
AA5-X9:7 (N) and X1:PE
Section 4 |
Pipe connections
HM 6Split /
HM 12Split
More information in the AA5 expansion card manual.
Temperature sensor installation
on pipe
The temperature sensors are fitted using heat con-
ducting paste, cable ties (the first cable tie is secured
to the pipe in the middle of the sensor and the other
cable tie is mounted approx. 5 cm after the sensor)
and aluminium tape.Then insulate them using the in-
sulation tape.
