An air terminal device connects to a sheet metal duct run with a reheat coil and an access door furnished with the unit. The upstream rigid duct requires a minimum straight length equal to three times the box inlet dimension. Unless otherwise noted, the inlet duct size increases by two inches in diameter when the runout exceeds eight feet. Required working space for electrical devices includes a minimum depth of three feet and a width of thirty inches or the width of the electrical device, whichever is greater.
SHEET METAL DUCT REHEAT COIL ACCESS DOOR (1) OPERATOR (2) NOTES: AIR TERMINAL DEVICE MINIMUM STRAIGHT RIGID DUCT LENGTH = 3 X BOX INLET AIR FLOW D W (3) (1) ACCESS DOOR FURNISHED WITH UNIT. (2) UNLESS OTHERWISE SHOWN, INCREASE INLET DUCT SIZE BY 2 INCHES IN DIAMETER IF RUNOUT IS LONGER THAN 8 FT. (3) WORKING SPACE FOR ELECTRICAL DEVICES: -DEPTH (D) TO BE MINIMUM 3 FT. -WIDTH (W) TO BE 30" OR WIDTH OF ELECTRICAL DEVICE, WHICHEVER IS GREATER.
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