fothermo CPVB-10 Bedienungsanleitung Seite 10

EN
The water heater operates by the pressure of the
water pipe. The water pressure of the water supply
system should be higher than 0.1 МРа (1 bar) and
lower than 0.5 МРа (5 bar). If the pressure of the water
pipe exceeds 0.5 MPa, a pressure reducing valve must
be installed.
If additional equipment, which is not included in the
standard delivery, must be used to comply with local
regulations, they must be installed according to these
specifications.
In case the water pipes are made of copper or other
metal which differs from the metal of the water tank,
as well as if connecting elements made of brass are
used, non-metal fittings must be installed on the
supply and return side of the water heater (dielectric
fittings).
WARNING! The installation of any shut-off or non-
return fittings between the pressure relief valve and
the water heater, as well as blocking the side opening
of the pressure relief valve and/or locking its lever is
prohibited!
A drainage system to remove any water that may drip
from the side opening of the pressure relief valve is
recommended. The drain line must be designed with
a constant downward slope in a frost-free
environment and must remain open.
After connecting the water heater to the water supply,
fill the tank with water. The sequence of steps to be
performed is:
•
Fully open the hot water tap at the
furthest point of use.
•
Open the shut-off valve. (Table 1, No. 4)
•
Wait until the air is released from the
system and a strong jet of water flows
from the mixer tap. Let the water run for
about 30 seconds.
•
Close the hot water tap at the extraction
point.
•
Lift the small lever of the pressure relief
valve (Table 1, No. 5), wait 30-60 seconds
until a strong stream of water flows out of
the side opening of the valve.
•
Loosen the valve lever.
WARNING! If no water or only a thin stream of water
flows out of the valve opening, this indicates a
malfunction. A possible contamination of the water
pipe might be present. The fault must be eliminated
before the unit is put into operation.
10
It is FORBIDDEN to proceed with appliance electric
connection before eliminating the reason for
malfunction!
WARNING! Failure to comply with the requirements
for connection to the water supply system may cause
partial filling up of the water tank and malfunction of
the heating element, or when the combined valve is
not installed at all or has been improperly installed.
This may even cause destruction of the water tank,
the room and/or other damages to tangible and
intangible property. Such consequences are not
within the scope of manufacturer or seller warranty
liabilities and shall be at the expense of the party,
which has not observed the present manual
instructions.
WARNING! The combined check and pressure relief
valve is one of the protective devices that ensure the
safe operation of the water heater. The use of the
water heater with
removed/unassembled combined check and pressure
relief valve (safety valve) is
The pressure relief valve can also be used to drain the
water from the tank if desired. In such case, proceed
as follows:
•
Disconnect the water heater from any live
electrical wiring.
•
Disconnect the cold-water inlet.
•
Open the hot water tap of the mixing tap
or disconnect the hot water pipe (return
pipe) of the water heater.
•
Lift the small lever of the pressure relief
valve (Table 1, No. 5) and wait until no
more water leaves the valve.
•
WARNING! The running water can be hot
– risk of scalding.
These steps do not still secure the complete draining
of the water out of the tank. It is completed only by a
qualified person because it requires complete
disconnection of the appliance electric circuit and
dismantling the water tank flange.
WARNING! STRICTLY PROHIBITED
It is
heater power while the water tank is partially or
completely emptied of water! Do not forget to fill the
tank with water before putting it back into operation.
WARNING!
The coolant circulation through the heat
exchanger of a water heater equipped with such
device is PROHIBITED when the water tank is partially
or completely emptied of water.
a damaged or
STRICTLY PROHIBITED!
to turn on the
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