Radiant RKA 25, Инструкция по эксплуатации

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INSTALLATION INSTRUCTIONS
CONDENSING BOILOES WITH STORAGE - TG05A095.A0306
31
PUMP PLUG
CIRCULATION
CIRCULATION PUMP
S
T
M
AIR VENT VALVE PLUG
AIR VENT VALVE
4.2 Filling the system
Use only a WRAS approved filling loop for
connection and filling of the primary system.
This should be disconnected when not in use.
Check the properties of the water supply and
install the appropriate treatment devices if the
mains water has a hardness rating more than
25 °F i
n
order to prevent scaling and eventual
damage to the D.H.W heat exchanger.
Use only clean tap water to fill the system.
Once the water pipes have been connected, close the
gas feed valve and fill the system as follows:
•
Check that the circulation pump runs freely.
•
Check that the plug of the air vent valve has been
slackened slightly to allow air to escape from the
system (fig.1).
•
Open the main domestic water supply valve and
the filling loop.
•
Unscrew the plug on the circulation pump to
remove any trapped air, check that the pump is
free then re-tighten it when water starts to flow out.
•
Open the air vents on the radiators and monitor the
air evacuation process. When water starts to flow
out of the radiators, close the air vents.
•
Use the pressure gauge M (fig. 2) to check that the
system pressure reaches at least 1 bar and that
indicator
11 (see 2.7 “Control Panel”) lights up.
•
If, after the above operations, there is a reduction
in the pressure, re-open the external filling loop
until the indicator
11 lights up and the pressure
gauge shows at least 1 bar.
•
On completion, make sure that the filling loop
is turned off and the hosepipe is removed.
E
MPTYING THE CENTRAL HEATING SYSTEM
Whenever it is necessary to empty the system,
proceed as follows:
•
turn off the main power supply switch;
•
wait for the boiler to cool down;
•
turn the system drain tap RS (see fig. 4) and use a
container to collect the water that runs out;
E
MPTYING THE DOMESTIC HOT WATER SYSTEM
Whenever there is danger of freezing or any other occurrence,
the hot water system could be emptied in the following way:
•
Shut off the water at the mains;
•
Open all hot and cold water taps;
•
Empty from the lowest point (where possible).
Fig. 3
Fig. 2
Fig. 1
RS
Fig. 4