Ravenheat CSI85A, Installation And Servicing Instructions

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7.29.4 Close the on/off valves for the central heating
circuit and drain the water from the boiler drain
point (Fig 93).
7.29.5 Unscerw and remove the plastic cap that
protects the valve vent hole
7.29.6 Disconnect the unions 1 (Fig 92) slightly turn
and remove auto air vent
7.29.7 Replace in reverse order, using new seals.
7.29.8 Fill the system as described in the sec. 6.4&5
and check for leaks
7.30 TO REMOVE/REPLACE THE PRESSURE
RELIEF VALVE (Fig. 93)
7.30.1 Remove the front panel (sect. 7.3) and the
lower grating (sect. 5.4.2) from the outer
casing, lower the instrument panel (sect. 7.16.23)
Remove right side of the casing (sect. 5.4.5)
7.30.2 Close the on/off valves for the heating
system and drain the water from the drain
point
7.30.3 Unscrew the screw from its body, clean or
replace. Replace in reverse order
7.30.4 Fill the system as described in the (sect. 6.4 & 6.5)
7.31 TO REMOVE/REPLACE TIME CLOCK
(Fig.88/A)
7.31.1 Remove the front panel from the outer casing
(sect. 7.16.2 and 3) and lower the instrument
panel (sect. 7.16.2 and 3).
7.31.2 Remove control box cover (Sect. 7.23.2).
7.31.3 Remove control board (Sect. 7.23.2) from panel
7.31.4 Remove two clips securing the timer.
7.31.5 Carefully remove the four wires connecting
timer by pulling spade connectors from timer.
7.31.6 Replace in reverse order (ensure all electrical
connections are made correctly)
(Fig. 88/A)
7.32 Replace in reverse order (ensure all electrical)
connections are made correctly.