104106-06 Pressure Switch Kit -0.85"

This is a high altitude pressure switch for the 70000 input btu, and 90000 input btu, BG951 series furnace when installed at an altitude of 4501-7500 feet above sea level. 

If you are using natural gas and installing a BG951 series 70000 input btu, or 90000 input btu furnace at 4501-7500 feet above sea level then simply order this pressure switch.

If you are using propane and installing a BG951 series 70000 input btu, or 90000 input btu furnace at 4501-7500 feet above sea level then use this pressure switch and LP conversion kit BG11K50.

This pressure switch is also designed to be used with the 110000 input btu BG961 series furnace when installed between 4501-7500 above sea level. 

If you are installing a 110000 input btu BG961 series furnace and using natural gas then simply use this pressure switch. 

If you are installing a 110000 input btu BG961 series furnace and using propane then use this pressure switch and the LP converison kit BG11K50.