I need to lower the output of my gas valve on a 2 stage 7 yr old Lennox furnace, I want to lower its temp rise or operating temp. The plate on the valve has 2 torx type screws and a large flat head in the middle. Does anybody know this basic adjustment, my installer never checked temp rise and its 5f to much, and im not paying for a simple adjustment.
- posted
17 years ago