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5285 544 - 02 Technical information subject to change without notice. Printed on environmentally friendly
(recycled and recyclable) paper.
Vitocell 300 Operating and User Information
Service and Cleaning
Shut-Down
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 an
obstruction 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.
IMPORTANT
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.
Inspection and (if necessary) cleaning of tank must take
place within 2 years of initial start-up and as required
thereafter. Reinspection time must not exceed 2 years.
The internal cleaning of the domestic hot water tank
including its potable water connections may only be
performed by a licensed professional heating contractor.
There are no user serviceable parts on this equipment.
Clean tank enclosure with a commercially available
alcohol-based glass cleaning agent and a soft clean cloth.
If a water softener system is used in the domestic cold
water inlet piping into the tank, the water treatment
system should be inspected (serviced) at the same time.
If a drinking water filter is used in the main line, the
filter cartridge should also be investigated. All external
equipment must be serviced regularly and function
properly.
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