User Guide

035-18496-000-C-1102
Unitary Products Group 15
DUCT CONNECTIONS
Ductwork should always be suspended with hangers or sup-
ported by legs. It should never be fastened directly to the
building structure.
Allow clearance around ducts for safety in the handling of
heated air and for insulation when required.
INSULATION
Ductwork insulation should meet the following criteria:
Be used when ducts pass through an unconditioned space in
the cooling season or through an unheated space during the
heating season.
Include a vapor barrier around the outside to prevent the
absorption of moisture.
Be no less than 2 inches thick with the weatherproof coating
when applied to ducts exposed to outdoor conditions.
SUPPLY AIR DUCTS
See 13 for suggested method of connecting supply air duct-
work. Non-flammable material collars should be used to mini-
mize the transmission of noise and/or vibration.
FIGURE 12 - DETAILS FOR SECURING SUSPENSION CHANNELS
OUTER FRAME OF UNIT SECTION
(1 -3 /4 " X 1 -3 /4 ")
M AC H IN E SC R E W (5/16-18 X 1-1/2 LG )
9/16" FLA T W AS H E R
5/16-18" H EX N U T
TO P PANEL
9/16" H O LE FO R 1/2" H A N G ER R O D
(2 P E R C H A N N E L )
SUSPENSION CHANNEL
5/16-18" H EX N U T
SPACER (3/8" LONG )
SIDE PANEL
9/16" FLA T W AS H E R
LOCK W ASHER
9/16" H O LE FO R 1/2" H A N G ER R O D
(2 P E R C H A N N E L )
M AC H IN E SC R E W (5/16-18 X 1-1/2 LG )
SPACER (1/2" LONG )
TO P PANEL
SUSPENSION CHANNEL
9/16" FLA T W AS H E R
TO P PANEL
CENTER FRAME
OF UNIT SECTIONS
(2 1 /8 " X 3 /8 ")
5/16-18" C AG E N U T
9/16" H O LE FO R 1/2" H A N G ER R O D
(2 P E R C H A N N E L )
5/16-18" H EX N U T
LOCK W ASHER
9/16" FLA T W AS H E R
SPACER (3/8" LONG )
TO P PANEL
9/16" FLA T W AS H E R
SUSPENSION CHANNEL
5/16-18" H EX N U T
TO P PANEL
CENTER FRAME
OF UNIT SECTIONS
(2 1 /8 " X 3 /8 ")
M AC H IN E SC R E W (5/16-18 X 1-1/2 LG )
LOCK W ASHER
9/16" FLA T W AS H E R
C E N TE R C H A N N E L (Location "2" in Figure 6)
C E N TE R C H A N N E L (Location "1" Figure 6)
OUTSIDE CHANNEL