TJERNLUND PRODUCTS, INC.
1601 Ninth Street White Bear Lake, MN 55110-6794
Phone: 651.426.2993 800.255.4208 Fax: 651.426.9547
Visit our web site: www.tjernlund.com
Copyright © 2004 Tjernlund Products, Inc. P/N 8500380 Rev A 1/04
Distributed by:
Duct Booster
®
Fan Selection Table
The Tjernlund Duct Airstat is
used to automatically activate
Duct Booster fans by sensing
positive pressure in a forced
air heating and/or cooling sys-
tem. The single pole, single
throw, snap-acting switch is
activated by a diaphragm with
a factory installed sampling
probe inserted directly into
the duct or plenum.
PS1503 Specifications
Electrical Rating:
15 Amps non-inductive to 277 Volts AC
Electrical Switch:
SPST, N/O, Snap Action Contacts, Non-adjustable
Operating Pressure/Position:
On pressure rise +.05 ± .02" W.C. (Diaphragm Vertical)
Maximum Pressure:
1/2 PSI
Operating Temperature Range:
-40
0
F to 190
0
F
Sampling Probe:
Self-sealing, Factory-mounted probe
Dimensions:
5 1/2" across bracket, 3" high
Duct Airstat Model PS1503
SC-1 Speed Control
Speed Control turns Duct Fans on and off
and can vary motor RPM. SC-1 is compati-
ble with Duct Airstat (model PS1503) and
can be used with all High Performance M &
P Series and Duct Booster Fan models EA-5,
EF-6, EF-8 and EF-10. (Face plate fits models
EF-6, 8, 10 electrical box.)
Galvanized
steel, spring-
loaded
dampers
prevent backdrafts.
(4", 6" & 8" sizes.)
White
plastic,
dual purpose
grilles with
mounting collars.
(4", 6" & 8" sizes.)
Duct Booster
®
Fan Accessories
Typical Applications
115-120V
Duct
Airstat
Duct
Booster
Electronic
Air Cleaner
Electronic
Duct Heater
Humidifier
G-Series
Supply/Exhaust
Grilles
BD-Series
Backdraft
Damper
Tjernlund Products also offers:
• Combustion and fresh air In-Forcers™ ensure
adequate combustion air for heating
equipment or to improve air quality problems.
• Power Venters easily sidewall vent gas, LP and
oil fired furnaces, water heaters and boilers.
Sidewall
Power
Venters
Combustion
& Fresh Air
In-Forcers
DR-10 Dryer Vent Switch
Used to automatically activate P-Series Duct
Booster when dryer is in operation. DR-10 is
a positive pressure sensing switch that rec-
ognizes dryer operation and activates the
booster fan from an independent electrical
circuit. Eliminates connections through the
dryer circuit as well as manual systems
which require attention of the operator.
Operating Pressure/Position:
On pressure rise +.05 to +.07" W.C.
(Diaphragm Vertical)
M-Series
P-Series
EA & EF-Series
DB-2
Bath/Spa
Exhaust
Duct
Boosting
Indoor/Outdoor
Air
Supply/Exhaust
Radon
Mitigation
Office or
Conference Rm
Exhaust/Boost
Dryer
Venting
Breakroom
or Kitchen
Exhaust
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