Hisense Hi-Therma Serie Manual De Instalación Y Mantenimiento página 25

SPACE HEATING AND DHW
8 SPACE HEATING AND DHW
8.1 ADDITIONAL HYDRAULIC
NECESSARY ELEMENTS
!
D A N G E R
Do not connect the power supply to the unit prior to filling the space
heating circuit (and DHW circuit if it were the case) with water and
checking water pressure and the total absence of any water leakage.
17 6
10
3
5
4
1 2
7
8
15
Nature No.
1 Water inlet of the unit
2 Water outlet of the unit
3 DHW tank inner coil inlet
Piping connections
4 DHW tank inner coil outlet
5 Water inlet (DHW)
6
Water outlet (DHW)
7 Shut-off valve
Factory supplied
8 Shut-off valve with filter
3-way valve
9
Optional
10 Thermistor (for DHW)
accessories
11 Thermistor (for Space heating)
12 Water pump
13 Filter
Field supplied
14 Mixing valve
15 Check valve
16 Shut-off valve
17 Domestic hot water tank
As an installation example of space heating / cooling and
Domestic hot water (DHW), the following hydraulic elements
are necessary to correctly perform the space heating / cooling
and DHW water circuit:
• The factory supplied shut-off valve (7) need to be installed at
water outlet of the unit, and shut-off valve with filter (8) need
to be installed horizontally at water inlet of the unit.
Floor heating
ACT.
11
12
13
14
9b
Radiator
ACT.
ACT.
Cooling fan coil
9a
16
Part name
9a 3WV Cooling
9b 3WV DHW
• A water check valve (15) with a shut-off valve (16) 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.
• A domestic hot water tank (17) has to be installed in
combination with the space heating / cooling.
• 3-way valves (9) must be connected at one point of the water
outlet pipe of the installation, used to divert the water
circulation for specific functions. As shown in example,
connect straight through of 3-way valve to DHW tank inner
coil.
• DHW thermistor (10) must be installed to reach the inner
wall of the DHW tank and keep in good contact with it.
Space heating thermistor (10) must be installed on the
metal tube close to space heating, and keep in good
contact with it.
Mixing valve (14) is recommended to use ESBE ARA661,
•
which 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.
Additionally, the following elements are required for the DHW
circuit:
Nature No.
1
Piping connections
2
3
Field supplied
4
5
• A Shut-off valve (field supplied):
The shut-off valve (4) must be connected after the DHW tank
outlet (2) in order to make easier any maintenance work.
• A Security water valve (Field-supplied):
This accessory (3) is a pressure and temperature relief valve
that must be installed as near as possible to the Supplementary
water inlet of DHW tank (1). It should ensure a correct draining
(5) for the discharge valve of this valve. This security water
valve should provide the following:
- Pressure protection
- Non-return function
- Shut-off valve
- Filling
- Draining
13
Part name
Supplementary water inlet of DHW tank
DHW tank outlet
Pressure and temperature relief valve
3a Shut-off valve
3b Water check valve
3c Safety valve
Shut-off valve
Draining