Goodman Furnace: Counterflow horizontal, right side down – drain setup
Counterflow horizontal, right side down - drain setup on a Goodman furnace: Drain trap and hose setup for a counterflow furnace laid on its right side. Needs at least 5.5 in clearance under the trap.
Applies to: Counterflow horizontal, right side down
How to fix counterflow horizontal, right side down - drain setup: step by step
- Keep at least 5.5 in clearance beneath the drain trap.
- Use the factory hoses where needed; remove the clamps to free them.
- Remove the drain trap and the factory drain tube assemblies.
- Remove two 1 in plugs from the right cabinet side.
- Drain the collector box: from outside the cabinet, feed the non-grommet end of hose #7 through the back drain hole and clamp it to the collector drain port with a silver clamp.
- Drain the vent elbow: insert the straight barbed coupling into the vent-drain elbow drip leg and secure with a red clamp.
- From outside the cabinet, feed the non-grommet end of hose #8 through the front cabinet drain hole and clamp it to the vent-drain elbow barb with a red clamp.
- Secure the trap to the furnace with the two sheet metal screws supplied in the cabinet.
- Connect the field drain to the trap outlet per the field drain section.
If the unit shows an error code, look it up: Goodman Furnace codes
Source: Goodman GMVC96 service manual, p. 23-24. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.