Lennox 15M20 ".10""wc SPST Pressure Switch" ".10""wc SPST Pressure Switch"

".10""wc SPST Pressure Switch"

The Lennox 15M20 ".10""wc SPST Pressure Switch" is a switch that is used for gas-fired products like furnaces, water heaters, and boilers. It has a gas pressure capacity of 10 PSI with an on-off mechanism.

The Lennox 15M20 Pressure Switch is a pressure-operated pilot device installed in the air duct leading to the burner assembly of all natural gas, liquid propane, and oil furnaces. This switch is designed to detect a drop in duct pressure and activate the furnace's burner in order to ignite the fuel and bring the furnace up to operating temperature. The 15M20 gradually increases airflow from .10" WC to .45"WC over 5 seconds before reaching full operational capacity of 75,000 Btu per hour.

Lennox 15M20 SWITCH: Restricts start of motor to 10" WC at pressure set point; includes housing and mounting bracket; position 1 - OFF, Position 2 - 10" WC at reset point.

The 15M20 is a mechanical pressure switch that is Ten Amps @ 277 VAC and 20 Amps @ 125 VDC

The Lennox 15M20 Pressure Switch is a replacement for Lennox 15M30 and Lennox 10M30. The 15M20 is used on all models that use the 15M30 pressure switch.

The 2G70, 3G70, 4G70, 4H60, 7H60, 8E20, and the 9E20 all have the same pressure switch as this one. Also fits the 6A21 and 9A21.

The Lennox 15M20 is a bi-metal latching pressure switch with an adjustable setpoint from 25% to 100%. It can be used for either refrigerant or air temperature control. The adjustable setpoint range makes this pressure switch easy to use in operation and system design.