WSHP-PRC001-EN
37
Sound control applies to the return
side of the duct design as well as the
supply side.
Figure 48
, demonstrates
a poor installation. Note that the
return air opening is close to the
cabinet of the unit.
Figure 49
graphic represents proper
installation of return-air duct. This
includes
•
Two 90-degree bends prior to the
intake
•
Lining the first 10 feet of the
return air duct
•
Locating the return-air intake
away from the unit blower
A duct system with noise control
in-mind can be designed by:
•
Keeping air flow velocities low
•
Using aerodynamic fittings
•
Using a duct liner if metal duct is
applied
•
Avoiding line-of-sight connec-
tions between a noise source and
an outlet
•
Avoiding line-of-sight connection
between a noise source and an
inlet
•
By properly locating balancing
dampers
•
Sealing cracks, seams and joints
in the duct run and equipment
panels
•
Blocking transmission through
walls, ceiling and floors
•
Mounting and supporting the
ductwork with isolation devices
that absorb vibration
•
Using flexible duct connections
•
Using flexible braided hoses on
the water connections
Application
Considerations
Figure 48: Improper return-air ducting
Figure 49: Proper return-air ducting
Содержание Axiom GEH006
Страница 107: ...WSHP PRC001 EN 107 Control Wiring Basic 24V 1 PH 208V 60HZ 1PH ...
Страница 108: ...108 WSHP PRC001 EN Control Wiring Deluxe 24V 3 PH 208V 60HZ 3PH ...
Страница 109: ...WSHP PRC001 EN 109 Control Wiring Tracer ZN510 1PH 208V 60HZ 1PH ...
Страница 110: ...110 WSHP PRC001 EN Dimensional Data Tracer ZN524 3PH 460V 60HZ 3PH ...
Страница 123: ...WSHP PRC001 EN 123 Dimensional Data Front Return Back Supply 12 1 2 15 Ton ...
Страница 124: ...124 WSHP PRC001 EN Dimensional Data Back Return Front Supply 12 1 2 15 Ton ...
Страница 125: ...WSHP PRC001 EN 125 Dimensional Data Front Return Top Supply 12 1 2 15 Ton ...
Страница 126: ...126 WSHP PRC001 EN Dimensional Data Back Return Top Supply 12 1 2 15 Ton ...
Страница 143: ...WSHP PRC001 EN 143 GEV 12 1 2 to 25 Tons ...