How to Replace a Glow-worm Energy 30c Diverter (UK)
Fit a new diverter on the Glow-worm Energy 30c. UK part number, isolation and torque steps.
Glow-worm
Part number
The Glow-worm Energy 30c uses the diverter cartridge. Check the GC serial number sticker inside the case — Glow-worm revised the diverter at least once during production.
Isolate
Turn off the gas at the isolation cock. Switch off 230 V at the fused spur. Drain to just below the diverter: on the Glow-worm Energy 30c, the drain-off is on the return pipe.
Fit
Unclip the diverter. Transfer the O-rings if OEM includes new ones — always fit the new seals supplied. Torque any brass unions to 25 Nm. Refill to 1.2 bar, bleed and fire for a wet check.
Frequently asked questions
- OEM or compatible?
- For gas-carrying components on the Glow-worm Energy 30c always fit OEM. Non-gas parts (fans, PCBs, pumps) — OEM keeps the warranty valid.
- Do I need to re-commission?
- Yes — record combustion CO/CO₂ ratio after any gas-side work per BS 6798.
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