Hitachi YUTAKI S80 Series - Water Piping

9. Refrigerant and water piping
TCGB0075 rev.0 - 11/2012
104
9.2.2 Water piping
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Water pipes connection
Space heating water connection of indoor unit are located where it is visible in the following images:
Space heating
inlet connection
(indoor unit water
outlet)
Plastic plug
3-way valve
T-branch
Space heating
outlet connection
(indoor unit
water inlet)
Plastic plug
3-way valve connection
for space heating intlet
(Left side view)
T-branch connection for
Space heating outlet
Piping size
(mm (inches))
Space heating
3-way valve connection T-branch connection
RWH-(4.0-6.0)FS(V)NFE Ø25.4 (1”) Ø25.4 (1”)
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Space heating pipes (factory supplied)
Indoor unit is provided with two exible water pipes (space heating pipes) for connection between the space heating and
the indoor unit (to the T-branch and to the 3-way valve).
Item Connection
1035mm
1385mm
Ø25.4
(1”)
Space heating outlet pipe (Wi-
thout elbow)
For the connection between the
T-branch water inlet and the
space heating outlet.
Space heating inlet pipe (With
elbow)
For the connection between the
3-way valve water outlet and the
space heating inlet.
Indoor unit
factory supplied
N O T E
Please, refer to the Installation and operation manual of the Domestic hot water tank of YUTAKI S80 for the detai-
led information.