Ravenheat CSI85A(T) Installation And Servicing Instructions - page 37
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7.19.6
Replace in reverse order.
7.20
TO REMOVE/REPLACE THE MAIN
SWITCH (Fig. 82).
7.20
Remove the front panel from the outer casing
(sect. 7.3) and lower the instrument panel
(sect. 7.16.2 & 3), and remove the control box
cover
(7.31.2/3).
7.20.2
Pull off the switch knob. Remove the switch
out from the instrument panel by pressing the
clamp springs (Fig. 82).
7.20.3
Detach the wires that connect to the switch- make
sure that these wires are later reconnected to
the same poles (Fig. 94)
7.20.4
Replace in reverse order
7.21
TO REMOVE/REPLACE THE WATER
PRESSURE GAUGE (Fig. 83).
7.21.1
Remove the front panel from the outer casing
(sect. 7.3) and lower the instrument panel
(sect. 7.16.2 & 3). Remove the lower grating
(sect.
5.4.2).
7.21.2
Close the heating system on/off valves and
drain the water from the drain point on the
heating system (Fig 93).
7.21.3
Unscrew the fitting that secures the pressure
gauge
probe.
7.21.4
Remove the pressure gauge from the instru-
ment panel by pressing its fastening springs.
7.21.5
Replace in reverse order.
7.22
TO REMOVE/REPLACE THE OVERHEAT
THERMOSTAT
7.22.1
Remove the front panel from the outer casing
(sect
7.3).
7.22.4
Remove the two wires that connect to the
overheat thermostat-making sure that these
wires will subsequently be reconnected to the
same poles (Fig. 94).
7.22.3
Replace in reverse order
7.23 TO REMOVE/REPLACE THE ELECTRIC
CONTROL AND IGNITION BOARD
7.23.1
Remove the front panel from the outer
casing (sect. 7.3) and lower the instrument panel
(sect. 1.16.2 & 3)
7.23.2
Unscrew the 2 screws holding the control box
cover and remove.
Disconnect mains cables and any other
connections (room thermostat and frost
thermostat if fitted).
7.23.3
Detach the connectors from the board
7.23.5
Replace in reverse order (ensure all electrical
connections are made correctly)
7.24
TO REMOVE/REPLACE THE DIFFERENTIAL
PRESSURE SWITCH (Fig. 87).
7.24.1
Remove the front panel from the outer casing
and the combustion chamber front cover (sect.
7.3 & 4).
7.24.2
Detach the wires that connect to the pressure
switch, make sure that these wires are later
reconnected to the same poles (Fig. 94).
7.24.3
Unscrew the two screws that fasten the pressure
switch to the back of combustion chamber.
7.24.4
Remove the two silicone tubes.
7.24.5
Ensure tubes are connected correctly (Fig. 87)
avoiding kinks.
7.24.6
Replace in reverse order ensuring that the
– tapping is connected to the tube terminating
inside the case and the + tapping is connected
to the tube terminating at flue ring
(Fig. 87 and 94)
7.25
TO REMOVE/REPLACE THE PUMP (Fig. 88)
7.25.1
Remove the front panel from the outer casing
(sect. 7.3) and lower the instrument panel
(sect. 7.16.2 & 3)
7.25.2
Remove lower grill right side of the casing
(sect. 5.4 2 & 5), lower the electric box
(sect. 7.16.2 & 3).