Ravenheat Little Star LS 100, Инструкции по установке и обслуживанию

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7.25
TO REMOVE/REPLACE THE PUMP
(Fig. 88)
7.25.1 Remove the casing (sect. 7.3) and lower
the instrument panel (sect. 7.19.1).
7.25.2
7.254
7.25.5
Remove lower grill of the casing (sect.
5.4.2 & 5), lower the electric box (sect.
7.16.2 & 3).
Detach the supply wire.
Unscrew the two hexagonal nuts that fasten
the pump to its pipes and remove the pump.
NOTE: It may be necessary to loosen the
flow pipe at the heat exchanger to replace
the pump gaskets.
7.25.6 Always use new seals when re-fitting new
pump.
7.25.7
Replace in reverse order.
Fig. 78
Fig. 81
Fig. 79
7.25.10 Refill as described in the sect. 6.4 & 5 and
check for leaks (see 7.26.2).
7.26
TO REMOVE/REPLACE THE DIVERTER
VALVE (Fig. 89)
7.26.1
Remove the casing and lower the instru-
ment panel (sect. 7.3 & 7.19.1).
7.26.2
Close the on/off valves for the heating cir-
cuit and the hot water circuit. Drain the boil-
er at drain point (Fig. 93) and drain hot
water from the lowest hot water tap and
drain point on DHW inlet cock (Fig. 46).
7.26.4
Unscrew the plate heat exchanger five nuts
that connect the diverter valve and pull it
out from boiler being careful not to damage
the wires.
7.26.5 Pull off circlip securing microswitches to
diverter valve.
7.26.7
Detach the wires that are connected to
this. Remember that they must subse-
quently be reconnected to the same termi-
nals (Fig. 94).
7.26.8
Replace in reverse order. Always use new
seals.
7.26.9 Fill the boiler as described in (sect. 6.4 & 5)
and check for leaks.
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