VII-ACCESSORIES
The accessories section describes the application of most
installed to the ZGB units.
A-Z1CURB
used. The roof mounting frames are recommended in all
other applications but not required. If the ZGB units are
-
ported under all edges and under the middle of the unit to
prevent sagging. The units MUST be mounted level within
-
fer to the roof mounting frame installation instructions for
details of proper assembly and mounting. The roof mount-
ing frame MUST be squared to the roof and level before
installed before the unit is set on the mounting frame. Typ-
-
fer to the roof mounting frame installation instructions for
proper plenum construction and attachment.
B-Transitions
-
ed with transition for detailed installation procedures.
ASSEMBLED ROOF MOUNTING FRAME
FIGURE 21
ROOF
MOUNTING FRAME
(Extends around entire
FIBERGLASS
INSULATION
(Furnished)
COUNTER FLASHING
(Field Supplied)
UNIT BASE
BOTTOM
RIGID INSULATION
(Field Supplied)
ROOFING
MATERIAL
CANT STRIP
(Field Supplied)
NAILER STRIP
(Furnished)
UNIT BASE
RAIL
FIGURE 22
D-Economizer (Field or Factory Installed)
-
an S175 outdoor sensible sensor. The modulating econo-
mizer opens fully to use outdoor air for free cooling when
temperature is suitable and opens to minimum position
during the occupied time period.
ECONOMIZER - DOWNFLOW
B7
DAMPER
MOTOR
A6
ENTHALPY
CONTROL
FIGURE 23
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