Flushing The System; Filling The Condensate Trap - PENSOTTI PCH 18 Instruction Manual

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.
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 14.5 psi (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.
INSTALLATION INSTRUCTIONS
Fig. 1
24
T
S