Hitachi YUTAKI S80 Series - 3.2 ERP Performance Data

ENGLISH
4.3 SPACE HEATING AND DHW
 D A N G E R
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and the total absence of any water leakage.
4.3.1 Additional hydraulic necessary elements for space heating
Nature Nº Part name
Piping connections
1 Water inlet (Space heating)
2 Water outlet (Space heating)
Factory supplied 3 Shut-off valve (factory-supplied)
Accessories 4
Water check valve
(ATW-WCV-01 accessory)
Field supplied 5 Shut-off valve
The following hydraulic elements are necessary to correctly perform the space heating water circuit:
• Two shut-down valves (factory supplied accessory) (3) must be installed in the indoor unit. One at the water inlet connection
(1) and the other at the water outlet connection (2) in order to make easier any maintenance work.
• A water check valve (ATW-WCV-01 accessory)ZLWKVKXWGRZQYDOYH¿HOGVXSSOLHGPXVWEHFRQQHFWHGWRWKHZDWHU
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4.3.2 Additional hydraulic necessary elements for DHW

TYPE 1: Version for operation in DHW but with a remote tank
Nature Nº Part name
Piping
connections
1 Water inlet (Space heating)
2 Water outlet (Space heating)
3 Heating coil inlet
4 Heating coil outlet
5 Water inlet (DHW)
6 Water outlet (DHW)
Factory supplied 7 Shut-off valve (factory-supplied)
Field supplied 8 Remote domestic hot water tank
Accessories 9
3-way valve
(ATW-3WV-01 accessory)
Field supplied
10 T-branch
11 Heating coil pipes
YUTAKI S80 TYPE 1 is not factory-supplied ready for DHW operation, but it can be used for the production of DHW if the following
elements are installed:
• A domestic hot water tank (Remote tank) (8) has to be installed in combination with the indoor unit.
• A 3-way valve (ATW-3WV-01 accessory) (9) must be connected at one point of the water outlet pipe of the installation.
• $7EUDQFK¿HOGVXSSOLHG (10) must be connected at one point of the water inlet pipe of the installation.
• 7ZRZDWHUSLSHV¿HOGVXSSOLHG (11). One pipe between 3-way valve and the heating coil inlet (3) of the DHW tank, the other
one between the T-branch and the heating coil outlet (4) of the DHW tank.
REFRIGERANT AND WATER PIPING
PMML0340B rev.1 - 03/20169