IM 817-4
Page 53 of 60
Draftstop is made up of three separate sections as listed below:
1.
Upper channel or backplate
2.
Mounting components
3.
Enclosures and trims
Items 1, and 2 are materials which will be required to start the installation.
Item 3 is the completion material and should be stored in a safe area
until needed.
The following step-by-step procedures should be adhered to:
1.
Check the area in which the equipment is to be installed and clear
away the debris.
2. Review the engineered floor plans or the approved equipment
room schedule.
3.
Place the proper amount of equipment in each area in accordance
with plans or schedule.
4.
Proceed to install the equipment as outlined on the following pages.
Refer to the installation instructions included with the Draftstop
system for more detailed information.
Upper Channel or Backplate Assembly
1. Establish a level chalk line on the wall at a height specified for the
top of the enclosure. Select mounting hardware which is suitable
for the type of wall construction used and mount the upper channel
or backplate flush with the chalk line. When mounting, use the
prepunched holes and push the hardware through the sponge
gasket.
Note:
a.
The upper channel is provided with continuous 5/16"
diameter holes on 2" centers for mounting.
b.
Where used, the backplate assembly consists of a full backplate
welded to the back of the upper channel. Fasten the backplate at
the bottom as well as at the top.
2.
Wall-to-Wall Application: Starting at the left side, run the upper
channel or backplate along the wall. Note that the upper channel or
backplate is installed behind the wall trim as well as the enclosure,
because both the enclosure and wall trim rest in the top groove of
the upper channel.
3.
Wall-to-End Application: Run the upper channel or backplate from
the wall to a point where the enclosure will end. See Draftstop
installation instructions for details of end cap installation.
4.
End-to-End Application: Run the upper channel or backplate the
same length as the enclosure. See Draftstop installation instructions
for details or end cap installation.
5.
For inside corners, run the upper channel or backplate into the
corner, butting the pieces together. If desired, pieces may be
stopped short of the corner a maximum of one inch. Refer to the
Draftstop installation instructions for details of the corner trim
installation.
The Draftstop enclosure and unit ventilator end panel should be
matched, to ensure proper airflow. Tables 31-34 show the various end
panels available, follow installation instructions included with the
end panels.
NOTICE
The following information is a general outline for installing the
Draftstop system. Refer to the specific installation instructions
provided with the Draftstop system equipment.
Draftstop Bar Grille and Adjustable Damper
Piping
Area
Figure 128 - Typical DraftStop Enclosure
All Dimensions
in Inches
16
5
/
8
" (422mm) Deep
End Panels
21
7
/
8
" (556mm) Deep
End Panels
Top View
End View
With 4" x 18"
(102mm x
457mm)
Cut-out
End View
With 2
1
/
2
" x 7"
(64mm x
178mm)
Cut-out
End View
With No
Cut-out
End View
With 4" x 22"
(102mm x
559mm)
Cut-out
End View
With 2" x 5
1
/
4
"
(51mm x
133mm)
Step Down
Table 31 - 1" (25mm) End Panel Dimensions – Floor Unit Ventilators
27
7
/
8
"
(708mm)
27
7
/
8
"
(708mm)
7"
(178mm)
2
1
/
2
"
(64mm)
1"
(25mm)
27
7
/
8
"
(708mm)
18"
(457mm)
4"
(102mm)
1"
(25mm)
27
7
/
8
"
(708mm)
22"
(559mm)
4"
(102mm)
1"
(25mm)
16
5
/
8
"
(422mm)
1"
(25mm)
27
7
/
8
"
(708mm)
27
7
/
8
"
(708mm)
7"
(178mm)
2
1
/
2
"
(64mm)
1"
(25mm)
27
7
/
8
"
(708mm)
18"
(457mm)
4"
(102mm)
1"
(25mm)
27
7
/
8
"
(708mm)
22"
(559mm)
4"
(102mm)
1"
(25mm)
21
7
/
8
"
(556mm)
1"
(25mm)
27
7
/
8
"
(708mm)
2"
(51mm)
5
1
/
4
"
(133mm)
