Hisense Hi-Therma Serie Manual De Instrucciones página 26

9. SPACE HEATING/COOLING AND DHW
9.1 ADDITIONAL HYDRAULIC NECESSARY
ELEMENTS
Do not connect the power supply to the unit prior to filling the
space heating circuit with water and checking water pressure
and the total absence of any water leakage.
9.1.1 Elements for space heating/cooling
Nature No.
1
2
Piping connections
3
4
Factory supplied 5
Optional 6
accessories
7
8
9
10
Field supplied
11
12
13
As an installation example of space heating / cooling, the
following hydraulic elements are necessary to correctly
perform the space heating / cooling water circuit:
● The field supplied shut-off valve (8) need to be installed
at water outlet of the unit, and shut-off valve with filter
(5) need to be installed horizontally at water inlet of the
unit.
● A water check valve (12) with a shut-off valve (13) must
be connected to the water filling point when filling the
water circuit. The check valve acts as a safety device to
protect the installation.
Part name
Space heating/cooling water inlet
Space heating/cooling water outlet
DHW inlet (Cold water)
DHW outlet (Hot water)
Shut-off valve with filter
3WV Cooling
Thermistor (for Space heating))
Shut-off valve
Water pump
Filter
Mixing valve
Check valve
Shut-off valve
SPACE HEATING/COOLING AND DHW
● 3-way valves (6) must be connected at one point of the
water outlet pipe of the installation, used to divert the
water circulation for specific functions.
● Space heating thermistor (7) must be installed on the
metal tube close to space heating, and keep in good
contact with it.
● Mixing valve (11) is recommended to use ESBE
ARA661, whose operation mode is 3-point SPDT. If
mixing valve of other brands or models are used, the
operation mode must be 3-point SPDT, and power
supply must be 220-240V ~ 50Hz. The rotation time can
be set in the master controller.
9.1.2 Elements for DHW
As an installation example of Domestic hot water (DHW), the
following hydraulic elements are necessary to correctly
perform the DHW water circuit:
(1) Elements required for the DHW water circuit
Nature No.
1
Piping
connections
2
3
Field supplied 4
5
6
Factory supplied
7
● A Shut-off valve (field supplied):
The shut-off valve (5) must be connected after the DHW
tank outlet (2) in order to make easier any maintenance
work.
● A Pressure relief valve (Factory supplied):
The domestic hot water tank must be fed with cold water
passing through a pressure relief valve (6) calibrated to
about 7 bar (depending on local regulations). Operate
the pressure relief valve according to manufacturer's
specification. There must be no other valves between
the pressure relief valve (6) and the tank. The pressure
relief valve (6) must be installed as near as possible to
the DHW inlet and connected to a drain pipe (7) leading
to the sewer. This pressure relief valve can provide the
following:
- Pressure protection
- Non-return function
- Filling
- Draining
Check the pressure relief valve on the cold water supply
inlet.
The pressure relief valve must be operated regularly to
remove scale deposits and verify that it is not blocked.
15
Part name
DHW inlet (Cold water)
DHW outlet (Hot water)
Shut-off valve
Draining
Shut-off valve
Pressure relief valve
6a Water check valve
6b Pressure relief valve
Drain pipe