Y-IM-Single Package AC and Single Package Gas/Electric Units ...
Y-IM-Single Package AC and Single Package Gas/Electric Units ...
Y-IM-Single Package AC and Single Package Gas/Electric Units ...
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127083-Y<strong>IM</strong>-B-0606<br />
DUCTWORK<br />
Ductwork should be designed <strong>and</strong> sized according to the<br />
methods in Manual D of the Air Conditioning Contractors of<br />
America (<strong>AC</strong>CA) or as recommended by any other recognized<br />
authority such as ASHRAE or SM<strong>AC</strong>NA.<br />
A closed return duct system should be used. This will not<br />
preclude use of economizers or outdoor fresh air intake. The<br />
supply <strong>and</strong> return air duct connections at the unit should be<br />
made with flexible joints to minimize noise.<br />
The supply <strong>and</strong> return air duct systems should be designed<br />
for the CFM <strong>and</strong> static pressure requirements of the job. They<br />
should NOT be sized to match the dimensions of the duct<br />
connections on the unit.<br />
Refer to Figure 9 for bottom air duct openings. Refer to Figure<br />
10 for rear air duct openings.<br />
6 ; 2 <br />
# <br />
!<br />
FIGURE 11 - PREDATOR ® ROOF CURB D<strong>IM</strong>ENSIONS<br />
$<br />
& # &<br />
% $ # &<br />
4 - 6 7 4 <br />
5 7 2 2 ;<br />
& H "<br />
DUCT COVERS<br />
<strong>Units</strong> are shipped with the side duct openings covered <strong>and</strong> a<br />
covering over the bottom of the unit. For bottom duct application,<br />
no duct cover changes are necessary. For side duct<br />
application, remove the side duct covers <strong>and</strong> install over the<br />
bottom duct openings. The panels removed from the side<br />
duct connections are designed to be reused by securing each<br />
panel to its respective downflow opening. But keep in mind<br />
that the supply panel is installed with the painted surface UP,<br />
facing the heat exchanger, while the return panel is installed<br />
with the painted surface DOWN, facing the downflow duct<br />
opening. The supply panel is secured with the bracket<br />
(already in place from the factory) <strong>and</strong> two screws. It’s a snug<br />
fit for the panel when sliding it between the heat exchanger<br />
<strong>and</strong> unit bottom, but there is room. The return panel is<br />
secured with four screws.<br />
1 5 7 ) 6 - , , - + 7 , - 4<br />
+ 2 4 - 5 5 4 5 - + 6 1 <br />
1 5 7 ) 6 - , , - + 7 , - 4<br />
+ , - 5 - 4 5 - + 6 1 <br />
Unitary Products Group 15<br />
. 4 6<br />
FIGURE 12 - SUNLINE TO PREDATOR ® TRANSITION ROOF CURBS<br />
# <br />
' "<br />
! <br />
4 - 6 7 4 <br />
6 ; 2<br />
! "<br />
5 7 2 2 ;<br />
4 1/ 0 6<br />
$ & # &<br />
# ' "<br />
. 4 6 4 1/ 0 6<br />
$ " "
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