Glow-worm Energy7 25c ‑A Installation And Maintenance Instructions Manual page 41

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8. Remove the upper clip (1).
9. Remove the lower clip (3).
10. Remove the return pipe (2).
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11. Remove the clip underneath the condensate tray (1).
12. Undo the four screws (2).
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13. Remove the ignition electrode (1).
14. Lift the heat exchanger up slightly and remove it to-
gether with the condensate tray.
15. Remove the ignition transformer (2).
16. Install the new heat exchanger in reverse order.
0020300875_01 Energy Installation and maintenance instructions
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13.6.4 Replacing the pump head
1. Disconnect the pump cables from the electronics box.
2. Undo the four screws (1).
3. Remove the pump head (2).
4. Replace the O-ring.
5. Use four screws to secure the new pump head.
6. Connect the pump cables to the electronics box.
13.6.5 Replacing the expansion vessel
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B
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1. Undo the nut (3).
2. Remove both screws on the support plate (1).
3. Remove the support plate .
4. Pull out the expansion vessel (2) towards the front.
5. Insert the new expansion vessel into the product.
6. Screw the new expansion vessel to the water connec-
tion. To do this, use a new seal.
7. Attach the support plate using both screws.
8. Fill and purge the product (→ Page 31) and, if required,
the heating installation.
Troubleshooting 13
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