Saunier Duval ISOTWIN CONDENS F 35 E Instructions For Use, Installation & Servicing page 54

9 DHW expansion vessel retaining screw
10 DHW expansion vessel
11 Drain nozzle nut
12 DHW storage vessel coupling
13 DHW storage vessel
14 DHW storage vessel coupling
15.3.1 Heating expansion vessel
• Relieve the heating expansion vessel
coupling (6).
• Loosen the screws (2) and (3) of the
hanging bracket and remove it.
• Remove the heating expansion vessel
(5).
• Fit the new heating expansion vessel
and the new gasket in reverse order.
1
2
Legend
1 Pressure test point
2 Heating expansion vessel
• Check the supply pressure of the
expansion vessel (see chapter
"Technical Data") with the pressure tap
(1) and adjust it if necessary.
• Refill, vent and pressurise the boiler.
• Check for leaks.
15.3.2 DHW expansion vessel
• Relieve the DHW expansion vessel
coupling (8).
• Relieve the DHW expansion vessel
retaining screw (9).
• Remove the DHW expansion vessel
(10).
• Fit the new DHW expansion vessel and
the new gasket in the reverse order.
• Refill, vent and pressurise the boiler.
• Check for leaks.
15.3.3 DHW storage vessel
• Remove the heating expansion vessel
(5).
• Relieve the DHW storage vessel
coupling (12) (14) the drain nozzle nut
(11).
• Remove the screws (1) (4) and (7), and
take off the tie-rod.
• Relieve the DHW storage vessel
harness.
• Relieve the DHW storage vessel (6).
• Fit the new DHW storage vessel and
the new gasket in the reverse order.
• Refill, vent and pressurise the boiler.
• Check for leaks.
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