Radiant RK 25, Instruction Manual

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INSTALLATION INSTRUCTIONS
TA05A140.A0307
26
T
S
4.3 Flushing the system
Failure to flush and add inhibitor to the system will invalidate the appliance working.
All systems must be thoroughly drained and flushed out using additives – corrosion inhibitors and
flushing agents/descalers that comply to BS7593 requirements.
For informations or advices please contact Radiant Helpline UK
To flush out the primary side of this unit.
a.
Fill the boiler as per the filling instructions.
b.
Using a drain off cock on the lowest point of the system allow the water to drain from the system and boiler.
c.
In order to flush the system correctly turn off all radiators open the filling loop and drain cock simultaneously
and allow the water to flow through the boiler.
d.
Open each individual radiator allowing water to flow through then turn that radiator off and repeat for all
radiators on the system.
e.
Turn off the filling loop and close the drain cock open all radiators and open the filling to fill the system.
f.
Continue to fill the system until the pressure gauge reaches 1 bar.
4.4 Filling the condensate trap
The condensation trap must be pre-filled when
starting the boiler for the first time in order to
prevent flue gases from flowing back through
the trap.
The filling operation is carried out as follows
(see fig. 1):
•
Remove plug
T
and fill the trap
S
three
quarters full with water;
•
Replace plug
T
and connect the drainpipe
P
into a condensate discharge trap
conforming to current legislation;
Attention!
It is recommended to clean the
condensate trap, after a few months of boiler
operation, to remove deposits/residuals left
after the first condensate passage within the
boiler new components that may interfere with
the correct operation of the trap itself.
Fig. 1