Emery Stora Messages: 959 Registered: January 2011
Karma:
Senior Member
Hi John
Yes, it will go to 22” HG however as your motorhome gets to higher elevations you cannot achieve that amount of vacuum so you’ll have to set the pump lower in order to prevent the pump from running all the time.
I live at 5000 ft now and have it set at 19”HG. If I drive up to 8 or 10000 feet I have to adjust the pressure switch lower.