Greenheck Vari-Flow Air Management System(476251) - Manual (Page 3)

3 Vari-Flow Air Management System
NOTE
Resistive temperature detector(s) may be factory
installed. If so, continue to the next section.
Resistive Temperature Detector(s)
(RTD) Mounting
1. Locate flat area(s) at the top interior of the hood in
front of the filters, towards the front of the hood.
3. Center the octagon extension over the hole on the
hood surface.
2. Cut a 3/4-inch diameter hole into the top of the
capture tank. Make sure the resistive temperature
detector(s) will not interfere with fire system nozzles
and is not within 12 inches of light fixtures.
Installation
Control Box Mounting
1. Locate an area with enough space to mount the
control box and fasten to the wall.
NOTE
All field installation and wiring of electrical equipment
must be done to meet NEC and local codes.
.75 to .875 inch
diameter hole
Hood
Surface
4. Insert the compression seal into the hole from
the inside of the hood making sure the gasket is
placed on the fitting before inserting it into the hole.
Place the octagon box and J-box plate provided
over the fitting on the top of the hood, keeping the
fitting centered in the box. Install the lock washer
and 1-1/2 inch nut on the threaded portion of the
compression seal and tighten securely.
1/4 inch Compression Seal
Gasket
J-Box Plate
Temperature
Sensor
Lock Washer
Nut
Octagon Cover
5. Insert the resistive temperature detector (RTD) into
compression seal and tighten to 35 ft-lbs.
6. Place octagon cover onto J-box plate and fasten it.
NOTE
Control Box may be factory mounted. If so, continue
to the next section.
NOTE
If the Vari-Flow system is equipped with static
pressure controls it will be located in the Vari-Flow
cabinet, therefore this control box should be mounted
in the space to be controlled. If the control box is
mounted outside of this space, please refer to the
Pneumatic Static Pressure Kit Installation Instructions.
Octagon
Extension
Exhaust Area
Supply Area (optional)
Sensor Install
Cut Out Area
Top View of Exhaust Hood
®