Orion System OE742-XX-VAVZ - Manual (Page 27)

Form: Orion-OE737-RectBypKit-Sub-01B
Page 1 of 1
Description
The OE737 Rectangular Bypass Damper Kit
mounts to an OE519 Rectangular Damper
and controls duct static pressure to insure
proper system airflow. The Rectangular By-
pass Damper is controlled by the Orion
HVAC Unit Controller. The Unit Controller
modulates the Rectangular Bypass Damper
in response to the duct static pressure based
on a signal received from a static pressure
sensor located in the main system ductwork.
The Rectangular Bypass Damper Kit is used
in conjunction with rectangular dampers for
applications where rectangular dampers are
specified or required because of space limi-
tations or job requirements. The rectangular
dampers may be purchased from WattMas-
ter or you may get them from the supplier of
your choice. For proper control, WattMaster
recommends the use of low leakage op-
posed blade dampers. The maximum allow-
able damper face area for the Rectangular
Bypass Damper Kit is 6 sq. ft. The Rectan-
gular Bypass Damper Kit comes packaged
with the Damper Actuator and Wiring Interface pre-mounted in a galvanized steel enclosure. Each kit is supplied
with mounting hardware and installation instructions. For applications where CFM or space requirements dictate
the use of more than a single bypass damper, up to 2 additional bypass dampers can be slaved together. No
other components are required. Each bypass is wired to the other bypass damper(s) by means of the Wiring In-
terface.
Mounting
Before mounting the Rectangular Damper Kit, the rectangular damper should be mounted in the ductwork ac-
cording to standard duct installation practices. The damper should be mounted so the damper shaft turns in a
clockwise direction to open the damper. The Rectangular Damper Kit is simply slid over the damper shaft, the
actuator shaft collar setscrews tightened and the supplied self tapping screws are used to mount the enclosure to
the ductwork. Detailed mounting and installation instructions are provided with each kit. A knockout is provided in
the front access cover, which can be punched out to allow for damper shaft lengths, which extend past the enclo-
sure depth. When mounting the Rectangular Damper Kit, be sure to allow clearance for removal of the access
cover. Conduit knockouts are provided in the top and bottom of the enclosure for simplified wiring.
OE737 - Bypass Rectangular
Damper Kit
Technical Data OE737 Rectangular Bypass Damper Kit
Supply Power 24 Volt AC Enclosure Base 22 Ga. Galv. Steel
Power Consumption 3.0 VA Maximum Enclosure Cover 22 Ga. Galv. Steel
Operating Temp -22
°
F to 122
°
F Conduit Openings Top - (2) ½ & ¾” Comb. Knockouts
Operating Humidity 90% RH Non-Condensing Bottom - (2) ½ & ¾” Comb. Knockouts
Actuator Feedback 10Kohm, 1W Potentiometer Shaft Clearance Front - (1) ½ & ¾” Comb. Knockout
Actuator Rating 35 in/lbs (6 ft
2
Damper Area Max.) Controls Factory Mounted Inside Enclosure
Mounting Hardware (4) Self Tapping Screws Controls Access Cover is Removable by
Instructions Included with Each Kit Loosening 2 Screws
WattMaster reserves the right to change specifications without notice
Three Year Warranty