PENSOTTI PCH 50B-H, Instruction Manual

Page: 61 / 80

MAINTENANCE INSTRUCTIONS
58
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

(fig. 1)
and then up .
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

and pull them outwards, at
the same time rotating the panel downwards.
•
Unscrew the four fixing screws

and remove the cover

.
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.