Potterton Profile 30e Installation And Servicing Instructions page 25

SERVICING INSTRUCTIONS - Page 25
plate, leaving in place the three screws circled red, and remove
the plate complete with fan.
7. Disconnect the electrical connections as follows:—
White from terminal C(3). White from NC(2)
Refer to FIGS. 27, 28.
8. Pull off the outer thermostat knob.
9. Remove inner thermostat post by undoing the two securing
screws.
10. Remove the nut securing the thermostat to the control box.
11. If the boiler is fitted with a left hand flue, remove the flue elbow
as described in Section 1 Preparing the Boiler operations F, G,
page 22.
12. Remove the clip securing the thermostat bulb to the flow pipe.
13. Remove the split grommet in the base of the boiler and the split
grommet in the fan chamber. Feed the capillary and bulb
through the holes.
14. Replacement is the reverse of removal. The bulb of the new
thermostat should be coated with heat conducting paste.
Ensure the rubber grommets in the base of the boiler and the
fan chamber make a good seal around the capillary.
15. Ensure that the capillary is secure in the clips provided.
Follow the full commissioning procedure as detailed in the
COMMISSIONING section of these instructions. Page 18.
Supplied By www.heating spares.co Tel. 0161 620 6677
GRAVITY HOT WATER/PUMP OVER-RUN THERMOSTAT. Refer
to FIG. 2.
4. Remove door by undoing the lower fixing screws and lifting
door off the two upper hinge brackets.
5. Disconnect the electrical connections as follows:—
2 red wires from terminal NO(4)
2 brown wires from terminal NC (2)
1 white and 1 blue wire from terminal C (3)
6. Remove the screws securing the thermostat to the control box.
7. Remove the split pin retaining the thermostat bulb in the pocket
and withdraw the bulb.
8. Remove the split grommet in the base of the boiler. Feed the
capillary and bulb through the hole.
9. Replacement is the reverse of removal. The bulb of the new
thermostat should be coated with heat conducting paste.
Ensure the rubber grommet makes a good seal around the
capillary.
10. Ensure that the capillary is secure in the clips provided. Follow
the full commissioning procedure as detailed in the
COMMISSIONING section of these instructions. Page 18.