PRODUCT DESIGN
4
MBR/MBE blower cabinets are designed to be used as a
two-piece blower and coil combination. MBR/MBE blower
sections can be attached to cased evaporator coil. This two
piece arrangement allows for a variety of mix-matching pos-
sibilities providing greater flexibility.
The MBE blower cabinet uses a variable speed motor that
maintains a constant airflow with a higher duct static. It is
approved for applications with cooling coils of up to 0.8 inches
W.C. external static pressure and includes a feature that
allows airflow to be changed by ±15%. The MBR blower cabi-
net uses a PSC motor. It is approved for applications with
cooling coils of up to 0.5 inches W.C. external static pres-
sure.
The MBR/MBE blower cabinets are intended to be used with
a cased evaporator coil and a condensing unit or heat pump.
The blower section of the cabinet can also be used as an
electric furnace. The electric heating elements are field-in-
stalled. Electric heater kits (HKR) are available as sales
accessories for supplemental electric heat.
The MBR/MBE blower cabinets with proper coil matches can
be positioned for upflow, counterflow, horizontal right or hori-
zontal left operation. All units are constructed with R-4.2
insulation. In areas of extreme humidity (greater than 80%
consistently), insulate the exterior of the blower with insula-
tion having a vapor barrier equivalent to ductwork insulation,
providing local codes permit.
The CAPX/CHPX coils are equipped with a thermostatic ex-
pansion valve that has a built-in internal check valve for refrig-
erant metering. The CACF/CAPF/CHPF coils are equipped
with a fixed restrictor orifice.
The coils are designed for upflow, counterflow, or horizontal
application, using two speed direct drive motors on the CACF/
CAPX/CAPF/CHPF/CHPX models, and BPM (Brushless
Permanent Magnet) or ECM motor on the MBE models.
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