Rinnai EHP-WH110, User'S And Installer'S Manual

Page: 24 / 48

24
The safety group is to be operated regularly to remove lime deposits and to verify that it is not
blocked. Please beware of burn, because of the high temperature of water.
The expansion tank with capacity suitably sized to absorb volume variations (depending from
the extension of sanitary distribution piping) must be installed in the inlet line.
The tank water can be drained through the external manual gate valve installed on the inlet pipe
(not provided).
After all the pipes installed turn on the cold water inlet and hot water outlet to fill the tank. When
there is water normally flowing out from water outlet taps, the tank is full. Turn off all valves and
check all pipes. If any leakage, please repair.
If the inlet water pressure is less than 1.5 bar, a pressure pump should be installed at the water
inlet. For ensure the long safety using age of tank at the condition of water supply hydraulic
higher than 5.5 bar, a reducing valve should be mounted at the water inlet pipe.
A filter is advisable in the air inlet. If the unit is connected with ducts, filter in there must be put
forward to the air inlet of duct.
Make sure that the condensate drain pipe is at the lowest place and make a siphon on it if
necessary.
It is mandatory install a polyphosphate
dispenser and a water filter.
Air outlet Air inlet
Hot water
outlet
Chilled water inlet
Condensate
draining
Hydraulic
safety
group
Water supply
Filter
Automatic loading group
Unloading
Anti-scald valve
Expanssion vessel
Mixing valve
Shut-off valve
KEY
Sanitary uses