Glow-worm Betacom C - Manual (Page 59)

59
14 Replacement of parts
14.11 low water pressure sensor
For access, refer to section 14.1.
Drain the boiler circuit, refer to section 14.2.
Locate the low water pressure sensor at the front right
hand side of the boiler and remove the electrical sensors
connections, see diagram 14.11.
Remove the low water pressure sensor by turning it in an
anticlockwise direction.
Fit the replacement sensor in reverse order of removal
ensuring all washers are fitted.
Replace damaged washers as necessary.
Open the isolating valves on the flow and return connections,
refill, vent and re-pressurise the system ensuring all joints are
sound.
14.13 Primary Heat Exchanger
For access, refer to section 14.1.
Drain the boiler circuit, refer to section 14.2.
Refer to diagram 14.13.
Remove the pipe clips on the pipes of primary heat
exchanger.
Remove the CH temperature sensor on the return pipe.
Remove the pump and three way valve connection pipes.
Release the pipe connections, retaining the washers for
re-assembly.
Remove the combustion chamber cover, see section 12.1.
Carefully remove the heat exchanger by pulling forward taking
care not to damage the insulation.
Fit the new heat exchanger and reassemble the boiler in
reverse order ensuring all the washers are fitted, or replaced
as required.
Open the isolating valves on flow and return connections,
refill, vent and re-pressurise system ensuring the all joints are
sound.
******
14584
Diagram 14.12 Diagram 14.13
14494
Diagram 14.11
ELECTRICAL
CONNECTIONS
LOW WATER
PRESSURE
SENSOR
14.12 Secondary heat exchanger
For access, refer to section 14.1.
Drain the boiler circuit, refer to section 14.2.
Remove the two screws which connect the heat exchanger to
the L.H. / R.H. hydroblocks, see diagram 14.12.
Remove the heat exchanger from the gap on the left hand
side.
Fit the new heat exchanger checking that the plate numbers
are the same and reassemble in reverse order ensuring all
washers are fitted or replaced as required.
Open the isolating valves on the flow and return connections,
refill, vent and re-pressurise the system ensuring all joints are
sound.
OVERHEAT SAFETY
THERMOSTAT
PIPE CLIP
PIPE CLIP
PRIMARY
HEAT
EXCHANGER
THREE WAY VALVE
CONNECTION PIPE
PUMP
CONNECTION PIPE
SECURING SCREWS