Comfort-Aire TGRG Series for R-410A - Manual (Page 15)

FIGURE 10
EXCEPTION TO NON-COMBUSTIBLE FLOORING REQUIREMENT
I458
BOTH ENDS
MUST BE
OPEN FOR
DOWNFLOW
OR SIDEFLOW
DUCTWORK
TO PROVIDE
VENTILATION
COMBUSTIBLE
STRUCTURE 1” MIN.
NOMINAL
4 x 4 TIMBER
(SIDES ONLY)
SIDEFLOW
SUPPLY
PLENUM
CONNECTION
SUPPLY
PLENUM
(DOWNFLOW)
RETURN PLENUM
(DOWNFLOW)
SIDEFLOW
RETURN PLENUM
CONNECTION
3-1/2” MIN.
FIGURE 10
EXCEPTION TO NON-COMBUSTIBLE FLOORING REQUIREMENT
FIGURE 11
FLAT ROOFTOP INSTALLATION, ATTIC OR DROP CEILING DISTRIBUTING SYSTEM. MOUNTED ON
ROOFCURB, PITCH UNIT TOWARD DRAIN.
FIGURE 12
PITCHED ROOFTOP INSTALLATION, ON ANGLE-IRON STAND, SIDE FLOW DUCTWORK,
ATTIC OR DROP CEILING
DISTRIBUTING SYSTEM.
PITCH UNIT TOWARD DRAIN.
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