Johnson Controls P70AA-2 HEAD PRESSURE FANCONTROLNEW IN BOX

"0/150# 36""cap OPEN-LO PRESS.SW"

Needle valve with Johnson's exclusive Fast-acting, RELIEVING PROPORTIONING float with .125"" of travel. The needle valve floats on a ball joint for easy adjustment. The built-in limit switch cuts in at 150# which is 36" of capillary when floated at the zero position.

"Johnson Controls, Inc. Space environment control panel assembly. P70AA-2 Head. Pressure fan control: Used to control the inlet pressure of the space module. New in box."

The Johnson Controls P70AA-2 is a head pressure fan control that operates industrial fans and blowers. This unit is electrically operated automatic control with motor start temperature shut off feature. This Johnson Controls P70AA-2 1/8"NPT Automatic Pressure Fan Control has an adjustable time delay to allow for extended startups and temperature discharge curves. The resistance thermometer indicates the system operating temperature within user controls, alarm sounds when setpoint is reached, low pressure alarm is adjustable, max pressure setting adjustment, and motor shutoff on overload must be manually reset.

P70AA2

A complete appliance for floor and wall installations. It is only the number of fan speeds where it is economical to provide a head pressure control. In such situations, this control can reduce energy costs, as well as the wear, by maintaining room temperature at a set point. The device includes exhaust fans which are not normally coupled to heaters. This feature maximises the rates of heating in winter and cooling in summer etc.