INSTALLATION INSTRUCTIONS
TA05A140.A0307
44
6.6.7 Expansion
vessel
(see fig. 1)
•
Close the shut-off valves and drain the central
heating circuit of the boiler.
•
Use a 19 mm spanner to unscrew the pipe coupling
to the vessel.
•
Unscrew the fixing screws and remove the upper
mounting bracket. Remove the expansion vessel
from the front of the boiler.
•
Replace the expansion vessel and re-assemble the
components following the above procedure in
reverse order.
•
Switch on the electricity, water and gas supplies
and fill the system with water. Check for any leaks
from the joints and bleed off any air from the circuit;
6.6.8 Circulating pump
(motor body) (see fig. 2)
•
Close the shut-off valves and drain the central
heating circuit of the boiler;
•
Use a 5 mm Allen key to unscrew the four screws
securing the motor body to the impeller body;
•
Remove the motor body and check the condition of
the washer. If necessary, replace the washer;
•
Replace the circulation pump and re-assemble the
components following the above procedure in
reverse order;
Switch on the electricity, water and gas supplies and
fill the system with water. Check for any leaks
from the joints and bleed off any air from the
circuit. Restart the boiler.
circulating
pump
Fig. 2
fixing bracket
expansion vessel
Fig. 1
Summary of Contents for RK 25
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