Flushing The System; Filling The Condensate Trap - PENSOTTI PCH 50B-H Instruction Manual

4.3 Flushing the system

Failure to flush and add inhibitor to the system will invalidate the appliance warranty.
All systems must be thoroughly drained and flushed using additives – corrosion inhibitors and
flushing agents/descalers. Pensotti requires the use of the supplied Fernox Commissioning Kit or
individual containers of Fernox F3 or F5 cleaner and F1 protector. Follow Fernox installation
instructions. Failure to use Fernox F3 or F5 cleaner and F1 protector could void the warranty for all
waterside components.
To flush out the primary side of this unit
Fill the boiler as per the filling instructions.
a.
Using a drain off cock on the lowest point of the system allow the water to drain from the system and
b.
boiler.
In order to flush the system correctly turn off all radiators open the filling loop and drain cock
c.
simultaneously and allow the water to flow through the boiler.
Open each individual radiator allowing water to flow through then turn that radiator off and repeat for all
d.
radiators on the system.
Turn off the filling loop and close the drain cock open all radiators and open the filling to fill the system.
e.
Continue to fill the system until the pressure gauge reads in the Green section of the gauge (14.5 psi = 1
f.
bar).
To flush out domestic hot water circuit
Open all hot water outlets.
a.
Turn on inlet group supply so water enters the boiler; leave to fill until water is released from the hot
b.
water outlets. Turn off all hot water outlets.
Connect a hosepipe to the cylinder drain cock and open the drain cock.
c.
Allow water to flow through the boiler and out of the drain cock.
d.
Turn off water supply, disconnect the hosepipe, close the drain cock and refill the boiler.
e.

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
appliance operation, to remove
deposits/residuals left after the first condensate
passage within the units new components that
may interfere with the correct operation of the trap itself.
REGULATION INSTRUCTIONS
Fig. 1
T
S
39