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Glow Brand · Boiler troubleshooting

Condensate drain installation

C95 & C140

What is going on

Route condensate to a drain properly so the boiler does not shut down or the trap does not fail.

Likely causes

  • Frozen or blocked drain line causes condensate to back up into the combustion chamber.
  • Corrosive condensate attacks metal drains and sewer pipes.

Check in this order

  1. Do not run condensate lines outdoors.
  2. Do not use copper, steel or galvanized pipe for the condensate disposal system.
  3. Use the supplied 3/4 in I.D. corrugated hose to connect the trap to the drain. Extend it with poly or vinyl tubing if needed.
  4. Check local rules on whether condensate must be neutralized before disposal.
  5. If a condensate pump is needed, select one designed for condensate.
  6. Do not replace the factory condensate trap with another trap.
  7. Keep the trap secure to the bottom of the boiler with no strain on it.
  8. Keep the drain line away from areas that leaking condensate could damage.

Applies to: Condensate drain and trap

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Source: Glow Brand C95 & C140 installation & operating manual, p. 31. 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.