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RT-PRC031-EN 95
Options
to 100 percent supply air. The fan
operates in conjunction with the
supply fan. The relief damper
modulates in response to
economizer damper position on
Constant Volume air handlers.
• 100 Percent Modulating Return
Fan with Statitrac Control and
Variable Frequency Drive and
Bypass—Provided with all the
necessary controls to control/
maintain building space pressure
through a VAV air handler. The
Variable Frequency Drive (VFD)
modulates the speed of the
return fan motor in response to
return plenum pressure. A
differential pressure control
system, Statitrac, uses a
differential pressure transducer
to compare indoor building
pressure to atmospheric
pressure. The Statitrac control
system modulates the relief
dampers to control the building
pressure to within the
adjustable, specified deadband
that is set at the Human Interface
Panel.
• 100 Percent Modulating Return
Fan with Statitrac Control and
Variable Frequency drive and
Bypass—Bypass control
provides full nominal airflow in
the event of drive failure.
Filters
• No filters (two-inch nominal
thickness throwaway filter rack
only) option—Includes a
galvanized steel filter rack (less
filter media) with filter channels
to handle a complete set of two-
inch nominal thickness
throwaway filters to
accommodate applications
which require field supplied
filters.
• No filters (bag/cartridge filter
rack with throwaway prefilter
rack only) option—Includes a
galvanized steel filter rack (less
filter media) to handle a
complete set of two-inch or four-
inch (depending on airflow)
nominal thickness throwaway
prefilters and 7/8” nominal
header thickness bag or cartridge
filters to accommodate
applications which require field
supplied filters.
• Standard throwaway filters—U.L.
Class 2, two-inch nominal
thickness, high efficiency pleated
media filters rated MERV 7 per
ASHRAE 52.2. Filters are
mounted in a galvanized steel
filter rack.
• MERV 15, 90-95 percent bag filter
option—Nineteen-inch deep bag
filters are U.L. Class 2 and have
synthetic media mounted to a
7/8” nominal thickness header
frame. These bag filters have an
efficiency rating of MERV 15 per
ASHRAE 52.2. To ensure
maximum bag filter life, two-inch
prefilters are included with the
bag filters. Filters are mounted in
a galvanized steel filter rack.
• MERV 14, 90-95 percent cartridge
filter option—Twelve-inch deep
cartridge filters are U.L. Class 1
and are mounted a 7/8” nominal
thickness header frame. These
cartridge filters have an
efficiency rating of MERV 14 per
ASHRAE 52.2. To ensure
maximum cartridge filter life,
two-inch (or four-inch, depending
on the application) prefilters are
included with the cartridge
filters. Filters are mounted in a
galvanized steel filter rack.
• MERV 14, 90-95 percent, low
pressure drop, totally
incinerable, cartridge filter
option—Twelve-inch deep
cartridge filters are U.L. Class 2
and mounted with a rigid 7/8”
nominal thickness header frame.
These low pressure drop
cartridge filters have an
efficiency rating of MERV 14 per
ASHRAE 52.2. To ensure
maximum cartridge filter life,
two-inch or four-inch prefilters
(depending on airflow) are
included with the high-flow,
cartridge filters. Filters are
mounted in a galvanized steel
filter rack.
Final filter section filter options
mount integral within the
optional blank section of the unit
and are accessible by hinged
access doors.
• MERV 15, 90-95 percent,
standard temperature rated, bag,
final filter option—Available on
cooling only units with four or
eight-foot blank section, as well
as steam and hot water units
with eight-foot blank section,
unit casing only.
Nineteen-inch deep bag filters
are U.L. Class 2 and have
synthetic media mounted to a
7/8” nominal thickness header
frame. These bag filters have an
efficiency rating of MERV 15 per
ASHRAE 52.2. To ensure
maximum bag final filter life,
two-inch prefilters are included
with the bag filters. Filters are
mounted in a galvanized steel
filter frame bank.
• MERV 14, 90-95 percent low
pressure drop, totally
incinerable, standard
temperature rated, cartridge,
final filter option—Available on
cooling only units with four or
eight-foot blank section, as well
as steam and hot water units
with eight-foot blank section,
unit casing only.
Twelve-inch deep cartridge filters
are U.L. Class 2 and are mounted
with a rigid 7/8” nominal
thickness header frame. These
cartridge filters have an
efficiency raing of MERV 14 per
ASHRAE 52.2. To ensure
maximum cartridge final filter
life, four-inch prefilters are
included with the low pressure
drop cartridge filters. Filters shall
be mounted in a galvanized steel
filter frame bank.
• MERV 14, 90-95 percent,
standard temperature rated,
cartridge, final filter option—
Available on cooling only units
with four or eight-foot blank
section, as well as steam and hot
water units with eight-foot blank
section, unit casing only.
Twelve-inch deep cartridge filters
are U.L. Class 1 and are mounted
with a 7/8” nominal thickness
header frame. These cartridge
filters have an efficiency rating of
MERV 14 per ASHRAE 52.2. To
ensure maximum cartridge filter
life, two-inch prefilters are
included with the cartridge
filters. Filters are mounted in a
galvanized steel filter frame
bank.