Goodman Furnace: High altitude application (USA)
High altitude application (USA) on a Goodman furnace: Install the correct high altitude orifice or pressure switch kit for the altitude and gas type. Kits are chosen by installation altitude and natural or propane use. Do not derate by lowering manifold pressure below the rating plate.
Applies to: High altitude installs
How to fix high altitude application (usa): step by step
- Select the orifice or pressure switch kit using the altitude range table in the technical manual or spec sheet.
- Choose the kit for natural or propane gas.
- If the gas supplier derates the gas, size the orifice from the derated BTU/ft³ and altitude per NFPA 54 / ANSI Z223.1 and supplier data.
- Do not lower manifold pressure below the rating plate value to compensate.
If the unit shows an error code, look it up: Goodman Furnace codes
More commissioning tips for furnace
Source: Goodman GMVC96 service manual, p. 53-54. 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.