WattMaster MG331-21-VAVCAV - Manual (Page 26)

Form: WM-OE510-RndDmpr-Sub-01A
Page 1 of 2
VAV System
Description
The OE510-XX-VAV Pressure Depend-
ent Round Damper consists of a round
air damper, MG320-VAV controller, and
OE282 damper actuator. An optional
auxiliary relay board (OE321) is avail-
able for control of auxiliary heat and/or
control of series or parallel flow fan ter-
minal units.
The MG320-VAV Zone Controller is
microprocessor based and communi-
cates with the HVAC Unit Controller on
the WMVAV communications loop. The
VAV Controller monitors the space tem-
perature and allocates the proper air-
flow into its assigned space to achieve
the desired comfort and ventilation lev-
els.
Pressure Dependent Round Dampers
are used in air conditioning systems
that do not require pressure independent airflow control. If your system requires pressure independent control of
the airflow, see the “OE511 - Pressure Independent Round Damper” data sheet for the correct specifications.
All Round Dampers are tested and certified in accordance with ARI standard 880. An ARI label is affixed to all
units.
Mounting
The Round Damper assembly should be mounted according to standard duct installation practices with airflow
direction as shown in the illustration above. After installation of the Round Damper in the ductwork, insulation
should be applied around any remaining uninsulated surface on the air valve inlet and outlet. The Round Damper
should be mounted so the control enclosure is positioned to the left or right side of the ductwork with the control
enclosure in a vertical plane. Do not mount the Round Damper Assembly with the control enclosure on the top or
bottom of the ductwork. Adequate clearance should be maintained between the control panel and any obstruc-
tion to allow for removal of the control panel cover and access to the controls.
OE510-XX-VAV – Pressure
Dependent Round Damper
Technical Data OE510-XX-VAV Pressure Dependent
Round Damper
VAV Controller: Air Damper Construction:
Supply Power 24 Volt AC Damper Body 24 Ga. Galv. Steel
Power Consumption 12 VA Maximum Damper Blade Round -18 Ga. Galv. Steel
Operating Temperature 35
°F to 125°F Damper Bearings Oil Impregnated Bronze
Operating Humidity 90% RH Non-Condensing Damper Seal Volara
® Type A Gasket
Communications RS-485 - 9600 Baud Leakage Less Than 1% @ 3” SP
Insulation ½” Foil Faced Fiberglass
Inputs: Dimensions:
Room Temperature Sensor Air Damper Model “A” “B” “C”
Setpoint Adjustment OE520-06 (6”) 19.00 5.88 9.38
Actuator Position Feedback OE520-08 (8”) 19.00 7.88 11.38
OE520-10 (10”) 19.00 9.88 13.38
Outputs: OE520-12 (12”) 22.00 11.88 15.38
Expansion Port for Auxiliary Relay Board OE520-14 (14”) 22.00 13.88 17.38
Actuator Port for Connection to Damper Actuator OE520-16 (16”) 22.00 15.88 19.38
WattMaster reserves the right to change specifications without notice
Three Year Warranty On Electronic Components One Year Warranty On Air Damper
1/2" Foil Faced
Insulation
Actuator
Zone Controller
Round Damper
Blade Assembly
Control Enclosure
(Cover Removed)
AIR FLO W AIR FLO W