Potterton Paramount five 115, Руководство по установке, Страница: 145 / 156

11. Pull out the burner together with mixing duct, fan and eahaust gas
muffler to the front
12. Clean the burner pipe with a soft brush.
13. Use a new seal when installing the gas burner.
Caution
Use new seals
When re-fitting, new seals should be used, particularly for the gas
connecting pipe.
Caution
Make sure the spring disc is in the right position.
Make sure the spring disc is in the right position during installation.
Predetermined torque: 9 Nm.
Caution
After heating up the burner for the first time, you must check the
torque again.
10.4.3 Removing gas valve
1. Remove the electrical connections from the gas valve.
2. Loosen both threaded connections on the gas valve and remove the
gas valve.
Important
Use new seals when installing the gas valve.
10.4.4 Removing the heat exchanger
Carry out the following steps if the heat exchanger has to be completely
removed.
Important
The burner must have been removed.
To make removal easier, the gas valve should also have been
removed.
1. Close disconnector valves in flow and return.
2. Drain off the boiler water.
3. Pull the plugs from boiler sensors (flow and return).
4. Loosen the screw connectors of flow and return on the heat
exchanger (flat seal).
5. Remove the air vent.
6. Paramount3040 Remove the plastic retainer from the top of the heat
exchanger. For this, remove 2 screws from the casing cover
7. Take the holding clips off.
8. Lift the heat exchanger off the flue gas collector and lift it out.
9. Pull the cable off the water pressure monitor.
10. Undo the screwed connector at the pump replacement pipe and
remove the pipe or pump.
11. Paramount5080 Remove the return pipe.
12. Pull the plug off the gas valve, loosen and remove the gas valve.
13. Paramount95115 Remove the connection line between the heat
exchanger and the collector box.
14. Remove the retaining ring and push the slide coupling on the flue pipe
upwards.
15. Paramount5080 Remove the gas pipe.
16. Remove the siphon.
17. Loosen nuts at the collecting tray, remove the clip and remove the
collecting tray.
18. Loosen the nuts for the support plate on the back wall.
19. Lift and remove the heat exchanger with the support plate from the
back wall and take out.
Fig.38 Removing the heat exchanger
RA-0000481
17
10 Maintenance
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