Installation manual

Installation and servicing instructions strictly reserved for qualified gas installers
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15.1.1 DHW pump or heating
Loosen the 4 pump retaining screws
(1)/(3).
Remove the pump motor (2)/(4).
15.1.2
DHW exchanger
Remove both retaining screws (13)
accessible from the boiler front face.
Be careful with the direction of
reassembly : the word “T
OP”, printed on
the edge of the exchanger (25) will be set
upward.
15.1.3 Flow sensor
Turn off the cold water inlet.
Relieve the clips (28).
Remove the connector (29).
Remove the flow sensor (27).
15.1.4
Cold water filter
Relieve the filter retaining clip (5).
Remove the cold water filter (6).
15.1.5 “Foaming” filter
The “foaming” filter improves the heating
circuit gas purging operation.
T
urn off the heating flow and return
insulating valves, and then drain the
boiler
.
Relieve the filter retaining clip (12)
located under the pump.
Relieve the “Foaming” fi
lter (11).
15.1.6 Low water pressure sensor
Relieve the clip (17).
Remove the connector (23).
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Remove the low water pressure sensor
(22).
15.1.7
Three way valve
Remove the connector (26).
Remove the three way valve (21).
15.1.8
DHW safety valve or heating
Relieve the clips (16)/(19).
Remove the safety valve (15)/(20).
15.1.9
Filling device
Disconnect the drain connection (5)
located under the fi
lling device (18).
Relieve the clip (14).
Remove the filling device (18).
15.1.10
Automatic air vent
Remove the retaining clip and remove
the automatic air vent (24).
Fit the new automatic air vent and ‘O’
ring ensuring the vent cap is left loose.
Refill, vent and pressurise the boiler
.
Check for leaks.
15.1.1
1 Filling tap
Remove the clips (8)/(10).
Fit new ‘O’
rings.
After replacing the filling tap, open the
cold water isolation valve and slowly
open a hot water tap to remove air
.
Close the hot water tap and check for
any leaks.
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