104371-04 SWITCH - PRESSURE .75
This is a high altitude pressure switch that is designed to be used with a 70000 input btu BG961 series furnace when its installed at 7501-10000 feet above sea level.
If installing a 70000 input btu BG961 series furnace using natural gas between 7501-10000 feet above sea level then use this pressure switch and high altitude, natural gas, orifice kit B51W01.
If installing a 70000 input btu BG961 series furnace using propane between 7501-10000 feet above sea level then use this pressure switch and LP converison kit BG11K45.