Accurex XCR, Manual

Page: 58 / 64

CEILING AND CABINET FANS
Model XCR-A Model XCR-B
FILTERS
Fans used in most applications, even where air is not excessively dirty, will
collect airborne dirt on wheels and motors over time. Accumulations of dirt
on the fan wheel will sharply reduce performance and cause imbalance.
Dirt buildup on the motor can cause it to overheat. All of these conditions
will shorten the life of the fan. To help reduce this accumulation, washable
aluminum mesh filters are available to trap dirt before it enters the fan. These
filters should be regularly cleaned to maintain performance. The Filter Loss
Chart shows the effect the filter will have on performance. To determine
the added resistance, divide the desired cfm by the filter area (ft2). This will
give ft/min. Use this with the filter loss chart to get the added resistance. In
addition to reducing dirt accumulations on the motor and wheel, filters also
reduce sound levels.
CEILING RADIATION DAMPERS
The Accurex XCR-A and XCR-B ceiling radiation
dampers are UL Classified, rated at three hours
fire resistance, and are available on all XCR-A
and XCR-B fans and fan/light combinations. This
design saves space by allowing the damper to
mount directly beneath the fan.
XCR-B Fan
Hanging
Vibration
Isolation
Ceiling
Radiation
Damper
Fire
Rated
Ceiling
Grille
3 in.
AxB
Mesh
Filter
Grille
.24
.22
.20
.18
.16
Resistance (in wg)
.14
.12
.10
.08
.06
.04
.02
.00
Velocity (ft/min. x 100)
0 1 2 3 4 5 6 7 8 9
XCR Model CRD LENGTH WIDTH HEIGHT
A50 - A190 310 131/2 111/8 3
B50 - B200
A200 - A390
320 143/8 121/4 3
A410 - A510
A710, A780
350 187/16 14 15/16 3
A700 700 243/16 121/4 3
A900 - A1550 360 243/16 1415/16 3
All dimensions shown in inches.
Add an “L” to all CRD models if fan & light combo is used.
FILTER AREA (ft
2
)
XCR Model *Metal Grille
A50 - A190 F-210 .739
B50 - B200
A200 - A390
F-220 .911
A410 - A510
A710, A780
F-250 1.518
A900 - A1550 F-260 2.078
*Aluminum or Stainless Steel Grille.
OPTIONS AND ACCESSORIES XCR AND XIR
Filter Loss Chart