Radiant RK 25, Инструкция по эксплуатации

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INSTALLATION INSTRUCTIONS
TA05A140.A0307
25
PUMP PLUG
PUMP
AIR VENT VALVE PLUG
AIR VENT VALVE
RS
M
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
17.5 ° Ck 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 (see fig.1);
•
Open the main domestic water supply valve;
•
Open the external filling loop;
•
Unscrew the plug on the 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
(see fig. 2) to check
that the system pressure reaches 1 bar and that
the code H2O does NOT appear on the control
panel display
(see 2.7 “Control Panel”)
;
•
If, after the above operations, there is a
reduction in the pressure, re-open the external filling loop until the pressure gauge reads 1 bar and that the
code H
2
O disappears on the control panel display;
•
On completion, make sure that the external filling loop is perfectly closed.
Emptying 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. 2) and use a container to collect the water that runs out;
Fig. 2
Fig. 1