Toshiba HWT-1101F21MM3W-E, Руководство по установке

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Hydro Unit Installation Manual
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Water pipe
WARNING WARNING
• Install water pipes according to the regulations of
respective countries.
• Install water pipes in a freeze-free place.
• Make sure that water pipes have sufficient pressure
resistance.
The setting value of the overpressure preventive valve
is 0.25 MPaG (2.5 barG).
CAUTION
• Do not use zinc plated water pipes. When steel pipes
are used, insulate both ends of the pipes.
• The water to be used must meet the water quality
standard specified in EN directive 98/83 EC.
Water pipe
• Design the water pipe length within the QH
characteristics of the pump (Refer to “Fig.7-10” and
“Fig.7-11” on page 11).
The height of the pipe must be 7 m or less.
• Connections Ø22 compression fitting.
▼ Fig.7-06
▼ Fig.7-07
▼ Fig.7-08
H < 7 m
Cold domestic water in
Hot domestic water flow
Zone 1 heating flow
Zone 1 heating return
Zone 2 heating return
Zone 2 heating flow
Drain
Ø 22 Ø 22 Ø 22 Ø 22
Ø 22 Ø 22
Water circuit - Space heating
• Install drain cocks (locally produced) for water charge and discharge. Alternatively, use the water charge valve
inside the unit.
• Make the piping route a closed circuit (An open circuit may cause failure).
• The AIO has two built-in manual air relief valves for start-up purposes. It is recommended to install automatic
deaerators on appropriate locations in the associated pipe works.
Water circuit - Domestic water
• Connect the cold water inlet to the cold water supply. The AIO has a build in safety group.
• The safety group has a pressure relief valve/safety valve right before the domestic hot water tank inlet to protect
the water tank and associated pipe work against excessive pressures when the domestic water expands during
the heating process.
The back pressure valve (check valve), which is installed in front of the pressure relief valve, prevents water from
the tank flowing back into the cold water pipe. Therefore, the pressure in the water tank rises to the maximum
setting of the pressure relief valve and the pressure relief valve opens. The redundant water discharges.
If the pressure relief valve did not open, the water tank would burst.
The pressure relief valve must be operated regularly to remove lime scale/deposits and to verify that it is not
blocked. It is tested by turning the handle on the pressure relief valve while checking that water discharges.
Damages due to a faulty pressure relief valve are not covered by the warranty.
Please note that water may drip from the discharge pipe of the pressure-relief valve due to heating of the water.
This water collects into the AIO common drain funnel.
Unit drainage
• The AIO has a combined drain funnel (Refer to “Fig.6-01(8)”), collecting drain from the domestic water safety
group, the space heating safety group, and the space heating air relief valves.
• Install a drain pipe from the drain funnels to a building drain.
• Always ensure free drainage and no locks on the drain pipe.
19-EN 20-EN