Mounting and Installation
Mounting & Installation
If you purchased the Round Zone Damper or Rectangular Zone
Damper Kits from WattMaster, the controller and actuator are
factory mounted and wired in the damper control enclosure. If
your VAV/Zone Controllers are pressure independent, an airfl ow
probe and pressure sensor will also be factory mounted and wired.
Most terminal unit manufacturers will off er the option of fac-
tory mounting the Orion controls in their terminal units for an
additional charge. An installation worksheet and instructions
are available for the Orion VAV/Zone Controller package which
can be shipped with the VAV/Zone control(s) to the terminal
unit manufacturer to simplify factory mounting and wiring of
the controller.
VAV/Zone Controller Package
NOTE:
The VAV/Zone Controller defaults to Direct Acting,
which means that when looking at the damper shaft,
the damper rotates clockwise to open. If the damper
on the terminal unit is not installed for clockwise to
open operation, the WattMaster Zone Controller can
be confi gured for counterclockwise to open opera-
tion via the operator interface or through the Prism
software. It must be changed prior to system start-up
for the designated units for the zone damper to func-
tion properly. See your operator interface or Prism
manual for further information on reconfi guring for
reverse acting operation. Installation is the same as
for clockwise-to-open units except all references to
clockwise will now be counter-clockwise direction.
1. The terminal unit damper (by others) should be installed so the
damper shaft turns in a clockwise direction to open the damper.
This is the software default for the VAV/Zone Controller Pack-
age. If this is not possible, the Controller can be re-confi gured for
counter-clockwise-to-open operation using the Prism software.
See the note above for details. All installation instructions are
based on the clockwise-to-open default. Check the damper for
proper rotation and mark the end of the damper shaft to indicate
open and closed positions.
2. Loosen the (2) shaft mounting bracket nuts on the ends of the
damper actuator’s shaft mounting U-bolt and slide damper actua-
tor assembly over the terminal unit damper shaft. The actuator
may have to be rotated from position shown depending on the
terminal unit’s available mounting area and damper shaft loca-
tion and whether this is a left or right hand installation. Hand
tighten the U-bolt nuts until the damper shaft is loosely secured
to the shaft.
Space Temperature Sensors
The Space Temperature Sensors should be mounted in the space
served by the equipment the sensor is connected or hard wired
to. All Space Sensors should be mounted approximately 5 feet
above the fl oor and in an area that does not experience direct
sunlight or drafts in order to get accurate readings. Cabling or
wiring should be routed so the wire or cable is protected from
being pinched or punctured by building fasteners or materials.
Discharge Temperature Sensors
These sensors should be mounted in the supply air duct of the
equipment. The Discharge Temperature Sensor should be mount-
ed at least 10 feet away from any Heating or Cooling source and
be mounted 3 duct diameters from any elbow.
Cabling or wiring should be routed so the wire or cable is pro-
tected from being pinched or punctured by building fasteners
or materials.
NOTE:
If this is a stand-alone damper, this sensor would be
mounted upstream of the damper to act as a Supply
Air Sensor.
3. After positioning the damper actuator over the damper shaft,
secure the damper actuator to the controller enclosure base using
the supplied L-bracket and 2 screws.
4 Turn the damper blade to its fully closed position. With the
manual override clutch button depressed, rotate the actuator
clamp to within approximately
1
/
16
inch
to
⅛
inch distance be-
tween the actuator stop and the clamp, depending on the damper
seal design. Tighten the (2) shaft mounting bracket nuts on the
ends of the damper actuator’s shaft mounting U-bolt with an 8
mm wrench to 3-5 ft-lb of torque. On dampers with edge seals,
the actuator will compress the damper blade seal when reaching
the end position. Adjust the end stops, if required. Attach the
actuator cable between the actuator and controller.
13
VAV/Zone Controller Package
INSTALLATION & WIRING
