TJERNLUND PS1503 DUCT BOOSTER FAN SWITCH 8500130 REV A 0499 Dimensions

TJERNLUND
POSITIVE AIR FLOW PRESSURE SWITCH
The Tjernlund Duct Airstat senses positive pressure in a forced
air heating and/or cooling system. The single pole, single throw,
snap-acting switch is activated by a diaphragm with a factory
installed sampling tube inserted directly into the duct or plenum.
The Duct Airstat can be used to initiate such auxiliary devices
as: Duct Boosters, Electronic Air Cleaners, Electrical Duct
Heaters, and Humidifiers. The electrical contacts of the switch
are closed upon sensing positive air pressure generated by the
blower.
TYPICAL APPLICATIONS
Duct
Duct Electronic
Airstat Air Cleaner
Booster
115-120V
FEATURES
High Sensitivity
Maximum Temperature Limit of 190
Simple Installation
Self-Sealing Factory Mounted Sampling Tube
Mounting Hardware
TYPICAL MOUNTING LOCATIONS & APPLICATIONS
Duct Booster
SIDE VIEW
A
Switch activates Duct Booster by sensing positive pressure on either plenum, trunk, or branch lines as shown in Figures A and B above.
ELECTRONIC AIR CLEANERS
Switch actuates air
cleaner by sensing
positive plenum pressure.
Distributed By:
MODEL PS1503
Electronic
Duct Heater
Humidifier
F.
0
Plenum
SWITCH MUST BE MOUNTED
WITH DIAPHRAGM IN
VERTICAL POSITION
HUMIDIFIERS
Switch activates humidifier
by sensing positive plenum
pressure.
GENERAL SPECIFICATIONS
ELECTRICAL RATING:
278 VA Pilot Duty at 24 Volts AC
300 VA Pilot Duty at 115 to 277 Volts AC
15 AMPS Non-Inductive to 277 Volts AC
ELECTRICAL SWITCH:
SPST, N/O, Snap Action Contacts, Non Adjustable
OPERATING PRESSURE / POSITION:
On pressure rise at +.05 + .02" W.C. (Diaphragm Vertical)
MAXIMUM PRESSURE:
1/2 PSI
OPERATING TEMPERATURE RANGE:
-40 to 190 F.
0
SAMPLING TUBE:
Self-sealing, factory mounted tube
DIMENSIONS:
5" Diam., 5 1/2" Across Bracket, 3" High
Trunk Line
B
TJERNLUND PRODUCTS, INC.
1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547
Visit our web site • www.tjernlund.com
© 1997 Tjernlund Products, Inc.
Branch
Run
TOP VIEW
FAN OPERATION
Switch proves operation
of blower by sampling
positive pressure.
P/N 8500130 Rev. A 4/99