Alpha-InnoTec HT 12Split, Инструкция по установке и эксплуатации, Страница: 9 / 80

9
HT 6Split
HT 12Split
4 Pipe connections
General pipe connections
Pipe installation must be carried out in accordance
with current norms and directives.
The pipe dimension should not be less than the recom-
mended pipe diameter according to the table below.
However, each system must be dimensioned individu-
ally to achieve the recommended system flows.
The system can cooperate with a low- and medium
temperature heating system. Recommended temper-
ature of the heating medium at minimum designed
outdoor temperature DOT must not exceed 55°C on
supply, and 45 °C on return circuit from the heating
system, whereas HT 12Split / HT 6Split can achieve
even 65 °C when using a flow-through heating mod
-
ule or another peak heat source.
Excess medium flowing out of the safety valve must
be discharged via a pipe to a floor drain. The over
-
flow pipe must be slanted at the entire length from the
safety valve, and must be secured against freezing.
In order to achieve maximum system efficiency, we
recommend the installation of HT 12Split / HT 6Split
as close to the heat pump as possible.
The HT 12Split / HT 6Split module is not equipped with
cut-off valves, which must be installed outside the in
-
door module to make future maintenance easier.
The HT 12Split / HT 6Split module can be connected
to the central heating, cooling, and domestic hot wa-
ter installation. Install the supplied safety valve and
the manometer.
Air/water
heat pump
Minimum
flow during
defrosting
(100%
pump
speed (l/s)
Minimum
recom-
mended
pipe
dimension
(DN)
Minimum
recom-
mended
pipe
dimension
(mm)
HT 6Split/
L6Split
0,19 20 22
HT 12Split/
L8Split
0,19 20 22
HT 12Split/
L12Split
0,29 20 22
IMPORTANT
Any high points in the climate system, must be
equipped with air vents.
IMPORTANT
The pipe systems need to be flushed out before
the indoor module is connected so that
any debris cannot damage component parts.
IMPORTANT
As long as heating circuits in the system have not been
filled with the heating medium, do not set the switch
(SF1) in the controller in position “I” or “ ”. The com-
pressor in the heat pump and the flow-through heating
module can be damaged.
MINIMUM SYSTEM FLOWS
The installation must be dimensioned at least to man-
age the minimum defrosting flow at 100% pump op
-
eration, see table.
IMPORTANT
All connections require free flow, hence a discharge
valve must be installed.
IMPORTANT
An undersized system can result in damage to the
machine and lead to malfunctions.
Chapter 4 |
Pipe connections
HT 6Split / HT 12Split is
equipped with a pressure
expansion vessel of
10 litres. The pre-pres-
sure of the pressure ex-
pansion vessel must be
dimensioned according to
the maximum height (H)
between the vessel and
the highest positioned
radiator, see figure. A
pre-pressure of 0.5 bar (5
mvp) means a maximum
permitted height differ
-
Expansion vessel
Buffer vessel
Minimum volume of the heating system
CAUTION
The diaphragm expansion vessel at the domestic hot
water installation is not required. It is, however, required
to install a safety valve with opening pressure of 3 bar.
ence of 5 m. The maximum system volume excluding
the boiler is 220 litres at the above pre-pressure.
Approx. 10 l/kW is required for connection to the heat
pump, and many heating systems do not have this
volume. To prevent operational problems, the volume
is then expanded using a UKV buffer vessel.
H
LSplit 6 8 12
Minimum volume of the heating system
during heating / cooling
50l 80l 100l
IMPORTANT
In order to achieve undisturbed flow of the heating sys
-
tem, use a hydraulic coupling or open heating loops.
Remember to always keep the minimum required flow
in the installation - see the section "Minimal flow in the
installation".