PENSOTTI PCI 18, Instruction Manual

Page: 53 / 70

MAINTENANCE INSTRUCTIONS
49
6.4 Accessing the water heater
All maintenance operations require one or
more of the water heater 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 water heater 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 water heater.
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.
Fig. 1
Fig. 2
Fig. 5 Fig. 6
Fig. 3
Fig. 4