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5813 312 - 02
Vitocell 300-W/V, EVIA/EVIB Installation, Operating and Service
Shutdown
Temperature and Pressure Relief Valve
If domestic hot water production is not desired and the
risk of freezing temperatures in the mechanical room
exists, please contact your heating contractor.
H Ensure there is never any type of valve or restriction
of any kind between the tank and the temperature and
pressure relief valve (T&P valve), or between the T&P
valve and the discharge line outlet.
The discharge line must be oriented to enable
unobstructed and visible flow of discharge water
toward a floor drain.
H If you observe water being released out of the
discharge pipe of the temperature and pressure relief
valve, contact your heating contractor immediately.
H The valve test lever must be operated at least once
per year by the heating contractor to ensure that
waterway are clear. A licensed professional heating
contractor shall reinspect the T&P valve at least once
every three years. Failure to inspect can result in
unsafe temperature or pressure build-up, which can
result in substantial product/property damage, serious
personal injury or loss of life.
WARNING
The possibility of mineral build-up on the T&P valve seat
exists. Report dripping or discharges from the T&P valve
to the heating contractor immediately.
Operation
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