Duct Pressure Switch Installation

Panel or duct mount.

Duct pressure switch installation.

The single pole single throw snap acting switch is activated by a diaphragm with integral pressure probe inserted directly into the duct or plenum. The ps1503 duct airstat switch is designed to sense the positive pressure increase in a supply plenum or duct when an air han dler or furnace blower is in operation. Switch actuates air cleaner. An air switch senses positive negative or differential air pressure and actuates an internal switch.

Optional you can install a regular switch to disable the fan in case it becomes noise later on etc. Static pressure panel installations duct installations differential pressure 1. Signed 3 1 2 digit lcd indicates pressure overrange indicator. Turn the fan on and measure between terminals 1 and 3 of the airflow switch adjust the switch until continuity is broken.

Dip switch selectable display option pressure mode. Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners duct heaters humidifiers exhaust fans and duct booster fans. If no switching action is obtained try repositioning the nozzle to a position where a higher pressure is in the duct and check the tube is not kinked. An air switch senses positive negative or differential air pressure and actuates an internal switch.

Install a duct pressure switch from grainger to help your hvac system do its job. Duct boosters electronic air cleaners electrical duct heaters and humidifiers. The duct airstat can be used to initiate such auxiliary devices as. Pressure probe inserted directly into the duct or plenum.

Wc638 for 3 x 14 duct 639 649 for 3 x 10. Install a duct pressure switch from grainger to help your hvac system do its job. Switch kitchen cabinet typical installation with inline blower range hood probe exhaust duct pressure switch hood flue roof cap w damper inline blower typical installation with exterior blower range hood probe exhaust duct pressure switch hood flue exterior blower wall cap models. Tjernlund ps1503 duct airstat pressure switch airstat pressure switch the tjernlund duct airstat senses positive pressure in a forced air heating and or cooling system.

The increased duct pressure expands a diaphragm which in turn mechanically closes the normally open electrical switch contacts to activate accessories in tandem with the central. The electrical contacts of the switch are closed upon sensing positive air pressure generated by the blower.