DOMINA 80 E
46
7.0 REPLACEMENT OF PARTS
7.01 Initial procedure
a) The boiler is cold, electricity supply is isolated, and the gas supply is turned off at the inlet of the
boiler
b) For replacement of parts where water connections are broken, it will be necessary to isolate and
drain either or both the central heating or domestic hot water circuits of the boiler only. The cold
water mains inlet is isolated at the inlet cock. The D.H.W. is drained by opening a hot tap.
The C.H. flow and return cocks are turned off at the isolation cocks. The C.H. is drained via the
pressure relief valve (twist about 1/2 of a turn).
c) Remove components following special notice below and replace in reverse order.
d) Ensure water and gas washers are in good condition.
7.02 Final procedure
• Re-open cocks and re-charge the system to about 1 bar, and vent boiler and radiators.
Re-charge to 1 bar if necessary.
• Upon completion of the work the following. Should be checked:
I) Gas soundness of all joints
II) Water soundness of all joints
III) The electricity supply.
IV) The pressure of the sealed system and top up where necessary.
B
C
A
7.03 To lower the control panel
(fig. 35)
• Remove the two fixing screw (fig. 35) "A"
• Lift the two metal brackets "B"
• Rotate down the front panel "C"
Fig. 35
