Duct Pressure Switch Installation

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.

Duct pressure switch installation.

Pressure probe inserted directly into the duct or plenum. 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. For velocity applications use the veris vfxp series air velocity measurement. Optional you can install a regular switch to disable the fan in case it becomes noise later on etc.

Switch actuates air cleaner. Wc638 for 3 x 14 duct 639 649 for 3 x 10. Turn the fan on and measure between terminals 1 and 3 of the airflow switch adjust the switch until continuity is broken. The single pole single throw snap acting switch is activated by a diaphragm with integral pressure probe inserted directly into the duct or plenum.

Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners duct heaters humidifiers exhaust fans and duct booster fans. Static pressure panel installations duct installations differential pressure 1. 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. 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. Install a duct pressure switch from grainger to help your hvac system do its job. Eventually i will use a 2nd relay to power the fan when the a c is on or maybe a presure switch but given that i can get a relay for 8 vs almost 40 for a pressure switch i think i ll go with a relay. Install a duct pressure switch from grainger to help your hvac system do its job.

An air switch senses positive negative or differential air pressure and actuates an internal switch. Panel or duct mount. Duct boosters electronic air cleaners electrical duct heaters and humidifiers. 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.

The duct airstat can be used to initiate such auxiliary devices as. The electrical contacts of the switch are closed upon sensing positive air pressure generated by the blower.