Goodman Furnace: Upflow horizontal, right side down – drain setup
Upflow horizontal, right side down - drain setup on a Goodman furnace: Drain trap and hose relocation for an upflow furnace laid on its right side. Needs at least 5.5 in clearance under the trap.
Applies to: Upflow horizontal, right side down
How to fix upflow horizontal, right side down - drain setup: step by step
- Keep at least 5.5 in clearance beneath the drain trap.
- Remove the clamps from both drain hose ends.
- Remove the two trap screws from the blower deck, then remove the trap and both hoses.
- Move the two plugs from the right cabinet side to the blower deck.
- Drain the vent elbow: cut 1 in from the 45 degree bend of hose #2 and discard the bend. Feed hose #2 through the top cabinet drain hole and clamp it to the elbow barb with a red clamp.
- Drain the collector box: feed the non-grommet end of hose #11 through the bottom cabinet drain hole and clamp it to the collector box with a silver clamp.
- Clamp hoses to the trap with silver clamps. The trap outlet faces the furnace front. Secure the trap with the two removed screws through the large holes in the top tabs.
- Connect the field drain to the trap outlet per the field drain section.
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.
If the unit shows an error code, look it up: Goodman Furnace codes
Source: Goodman GMVC96 service manual, p. 21. 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.