Page 31
VII-ACCESSORIES
The accessories section describes the application of most of
the optional accessories which can be factory- or field-installed
in or on the KGA units. OPTIONAL ACCESSORIES section
(see table of contents) shows specific sizes per unit.
A-LARMF Mounting Frames
When installing units on a combustible surface for downflow
discharge applications, the Lennox C1CURB roof mounting
frame is used. The roof mounting frames are recommended
in all other applications but not required. If the KGA units are
not installed on a flat (roof) surface, they MUST be support
ed under all edges and under the middle of the unit to pre
vent sagging. The units MUST be installed level within 1/16”
per linear foot or 5mm per meter in any direction.
The assembled C1CURB mounting frame is shown in fig
ure 23. Refer to the roof mounting frame installation instruc
tions for details of proper assembly and installation. The
roof mounting frame MUST be squared to the roof and level
before installation. Plenum system MUST be installed be
fore the unit is set on the mounting frame. Typical roof curb
ing and flashing is shown in figure 24. Refer to the roof
mounting frame installation instructions for proper plenum
construction and attachment.
FIGURE 23
ASSEMBLED ROOF MOUNTING FRAME
SUPPLY AIR
OPENING
RETURN AIR
OPENING
FIGURE 24
ROOF
MOUNTING FRAME
(Extends around entire
perimeter of unit)
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
TYPICAL FLASHING DETAIL
B-Transitions
Optional supply/return transition LASRT08/10 is available
for use with the KGA 7.5 ton units and LASRT10/12 is avail
able for the 8.5 and 10 ton units, utilizing optional C1CURB
roof mounting frames. KGA 12.5 ton units will use LAS
RT15 with C1CURB roof mounting frame. Transition must
be installed in the C1CURB mounting frame before setting
the unit on the frame. Refer to the manufacturer's instruc
tions included with the transition for detailed installation
procedures.
C-Supply and Return Diffusers
Optional flush-mount diffuser/return FD11 and extended
mount diffuser/return RTD11 are available for use with all KGA
units. Refer to manufacturer's instructions included with
transition for detailed installation procedures.
D-LAOAD(M) Outdoor Air Dampers
Field- or Factory-Installed
Optional manual and motorized outdoor air dampers pro
vide up to 25 percent fresh air for return. Motorized damper
opens to minimum position simultaneously with the blower
during the occupied period and remains closed during the
unoccupied period. Manual damper assembly is manually
operated; damper position is manually set at installation
and remains in that position.
To Next Page
Loading...
Need help?
General
