17
HM 6Split
HM 12Split
Connecting to the indoor unit
Docking during use without heat pump
Connecting cold and hot water
The HM 6Split / HM 12Split unit is not equipped with
a shut-off valve for the central heating system, it must
be installed on the outside of the indoor unit to facilitate
any future servicing.
Installation alternative
CAUTION
It is forbidden to install any constrictors (e.g. reduc-
ers, particle filter, etc.) and shut-off valves between
the storage tank and the safety valve. Only fitting a
tee with a draining valve and a tee with an expansion
vessel is permitted.
CAUTION
It is absolutely necessary to install a properly selected
safety valve on the cold water supply pipe.
CAUTION
Temperature sensor BT25 is included with the device.
It should be installed on the installation in accordance
with the guidelines in the following section.
CAUTION
Do not use the appliance if the safety valve is blocked.
Section 4 |
Pipe connections
-BP4
HS1
-GP12
-BT63
-BT71
-QN10
P
-BT25
-BT12
-BT3
P
-BT15
SHB10
-BP4
HS1
-GP12
-BT63
-BT71
-QN10
P
-BT25
-BT12
-BT3
P
-BT15
SHB10
-BP4
HS1
-GP12
-BT63
-BT71
-QN10
P
-BT25
-BT12
-BT3
P
-BT15
-BT7
-BT6
SHB10
-GP11
CAUTION
The location of the BT6 sensor should be selected based
on the design of the domestic hot water tank used.
No change of hydraulic connection configuration
is necessary to ensure operation of the indoor unit
independently from the outdoor unit. The device is
equipped with auxiliary heater that may be used as
the main heat source in the case of absence of out-
door unit.
The HM 6Split / HM 12Split unit should be connected
to the exchanger in the external hot water tank for do-
mestic hot water. The exchange area of the exchanger
is very important when selecting it. We recommend
NOTE
Safety valve for the HW storage tank must be fitted as
recommended by the storage tank manufacturer and
applicable regulations.
using the selection tables available on the website.
https://alpha-innotec.com. The sensors BT6 and BT7
should be placed in the appropriate places. BT7 sen-
sor in the place that will show the highest tempera-
ture in the tank. Whereas the BT6 sensor in 1/3÷1/2
of the coil height measured from the lower extreme
point. The location of the sensors is shown in the
domestic hot water connection diagram. DHW tank
should be connected to a water system with a water
pressure recommended by the tank manufacturer. If
the pressure at the inlet of cold water to the tank is
higher than allowed, use a pressure reducer. When
heating the water in the tank, the pressure increases,
therefore each tank must be equipped with a suitable
safety valve, installed on the cold water inlet, which
will protect the DHW tank against excessive pressure
build-up. In the case of using DHW circulation see
section “Hot water circulation”.
