Hitachi YUTAKI S80 Series - Domestic Hot Water Hydraulic Circuit (Optional); Hydraulic Circuit

9. Refrigerant and water piping
TCGB0075 rev.0 - 11/2012
108
9.3 Domestic Hot Water hydraulic circuit (Optional)
D A N G E R
DonotconnectthepowersupplytotheindoorunitandDHWtankpriorllingofwaterbothcircuitsandchec-
king water pressure and the total absence of any water leak.
9.3.1 Hydraulic circuit
Nature No. Part name
Accessories
1 Security water valve unit (DHWT-SWG-01)
2 Water check valve (ATW-WCV-01)
Field
supplied
3 Recirculation pump
4 Shutoff valve
5 Drain
Factory
supplied
6 Heating coil
7 Heating coil outlet water pipe (accessory)
8 Heating coil inlet water pipe (accessory)
9 DHW outlet water pipe (accessory)
10 DHW inlet water pipe (accessory)
Water ow Union Nut
Heating coil inlet
(From the indoor unit)
Main DHW
inlet
DHW
DHW Tank
Optional recirculation
(Security valve detail)
Pressure relief valve
Draining
Check valve
Shut-off valve
Main DHW
inlet
Heating coil outlet
(To the indoor unit)