Accessing The Boiler; Flushing Out The Primary Side - PENSOTTI PCH 50B-H Instruction Manual

6.4 Accessing the boiler

All maintenance operations require one
or more of the boiler casing panels to be
removed.
The side panels can only be removed
after the front panel has been removed.
Front panel:

Remove the fixing screws at the lower
edge of the front panel.

Grasp the lower part of the panel and

pull it outwards
.
Left and right side panel:

Remove the fixing screws at the front
and lower edge of the side panel to
remove.

Grasp the bottom of the panel, move
it sideways and then upwards to

remove it .
To access the electrical connections of
the control panel, proceed as follows:
Remove the front panel (see fig. 1).
Grasp the left and right control panel support brackets
panel downwards.
Unscrew the four fixing screws

6.5 Flushing out the primary side

Fill the boiler as per the filling instructions.
Using a drain off cock on the lowest point of the system allow the water to drain from the system and water
heater.
In order to flush the system correctly, turn off all radiators or fan coils. Open the filling loop and drain cock
simultaneously and allow the water to flow through the boiler.
Open each individual radiator or fan coil, allowing water to flow through. Then turn that radiator or fan coil off
and repeat for all radiators or fan coil on the system.
Turn off the filling loop and close the drain cock open all radiators and open the filling to fill the system.
Continue to fill the system until the pressure gauge reads in the Green section of the gauge (14.5 psi =
1 bar)
In order to safeguard all waterside components the supplied Fernox Commissioning Kit must be used in its
entirety.
MAINTENANCE INSTRUCTIONS
(fig. 1) and then up

and remove the cover.
2
4
Fig. 1

and pull them outwards, at the same time rotating the
3
5
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