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Glow Brand · Boiler troubleshooting

Condensate trap cleaning

Glow Combi C95 & C140

What is going on

Clean the condensate trap and confirm condensate flow after reassembly.

Likely causes

  • Sediment in the condensate trap or hose
  • Restriction in the condensate drain line

Check in this order

  1. Close the manual gas shutoff valve and remove power to the unit.
  2. Remove the front door panel.
  3. Remove the flue gas inlet plug from the condensate trap. Do not pull hoses down away from their upper connections. Keep the silicone hose secured to the plug.
  4. Unthread the retaining nut and disconnect the corrugated condensate hose from the trap outlet.
  5. Unthread the inlet cap from the trap.
  6. Remove the trap from the unit.
  7. Clean the trap and hose with water. Check the lower connection port for sediment. The float can be removed for cleaning if needed.
  8. Reinstall the trap, connect the hose to the trap outlet, and thread the inlet cap and retaining nut.
  9. Fill the trap three-quarters full with water through the flue gas inlet. Check all connections for leaks. Refit the flue gas inlet plug.
  10. Reinstall the front door panel.

Applies to: C95 & C140 Glow Combi boilers

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Source: C-300 C95-C140 Installation & Operation Manual, p. 76. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.