Saunier Duval ISOFAST F 28 E, Инструкция по установке и эксплуатации

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REPLACEMENT OF PARTS
• Pull out slotted metal clip securing flow sensor to
pump mounting and carefully remove sensor from
boiler.
• Fit replacement sensor to boiler in reverse order to
removal.
To replace printed circuit board (PCB)
• Gain access to rear of control panel.
• Unclip and remove external controls/mains connec-
tion access cover.
• Unclip side clips and hinge up control panel cover to
gain access to PCB, see diagram 5.
• Carefully pull off electrical connections to PCB.
• Unclip and lift out PCB.
• Fit replacement PCB in reverse order to removal.
Note: 1)
Make sure that PCB connections are fully
pushed onto replacement PCB.
2) Set the heating temperature option to the same
value as the old PCB, refer to 'Installation and User'
instructions.
• Open isolating valves on flow and return connections,
refill, vent and pressurise boiler.
• Check for leaks.
• Reconnect all electrical connections and restore elec-
trical supply.
• Open gas cock, operate boiler and re-check all joints
for soundness.
To replace fan
• Remove fan as described in ‘Routine Cleaning and
Inspection
’.
• Fit replacement fan in reverse order to removal.
• Reconnect electrical leads.
To replace air pressure switch
• Locate air pressure switch situated inside sealed
chamber on top right hand side.
• Remove air pressure switch tube from sensing probe
on flue hood.
• Disconnect air pressure switch electrical connections.
• Undo screws on top of boiler securing air pressure
switch to boiler and remove switch.
• Pull sensing tube off switch.
• Fit replacement switch to boiler in reverse order to
removal, noting that pressure sensing tube fits to left
hand connection on switch.
To replace domestic water flow sensor
• Drain down hot water circuit of boiler only as de-
scribed previously.
• Undo connecting nut from cold water inlet connec-
tion.
• Locate flow sensor on cold water inlet pipe to boiler
inside controls area, see diagram 4.
• Carefuly pull off electrical connector from flow sen-
sor.
• Pull out slotted metal clip securing cold water inlet
pipe to flow sensor and carefully remove from sensor.
➜
Acc 010/Acc01
1
Ins 064
Diagram 4
Diagram 5