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MUA-PRC001-EN42
Options
Factory Installed Options
Motors — General
All motors are provided as standard,
with a starter for external overload
protection, a control transformer, and a
fusible disconnect switch.
Open Drip-Proof Motor
60 Hz/1800 Rpm
Single Phase
Optional 115V motors are available in ¾
to 3 hp models. Optional 208V motors
are available in ¾ to 7½ hp models.
Optional 230V motors are available in ¾
to 10 hp models. All motors have rigid
base construction and ball bearings.
Class A insulation is on all motors up to
and including 3 hp models. Class B
insulation is on 5 hp and above models.
Three-Phase
Optional 208, 230, 460V available in 1 to
60 hp models. All models have rigid
base construction and ball bearings.
Class B insulation is on all three-phase
motors.
Energy Efficient ODP
60 Hz/1800 Rpm
Three-Phase Only
Optional 208V motors are available in 1
to 30 hp models. 230 and 460V motors
are available in 1 to 60 hp models. All
motors have rigid base construction and
ball bearings. Class B insulation is on all
motors.
Totally Enclosed Motor
60 Hz/1800 Rpm
Three-Phase Only
Optional 208V motors are available in ¾
to 20 hp models. Optional 230 and 460V
motors are available in ¾ to 60 hp
models. All motors have rigid base
construction and ball bearings.
Energy Efficient TEFC
60 Hz/1800 Rpm
Three-Phase Only
Optional 208V motors are available in 1
to 30 hp models. 230 and 460V motors
are available in 1 to 60 hp models. All
motors have rigid base construction and
ball bearings. Class B insulation is on all
motors.
Two-Speed/One Winding Motors
60 Hz/1800/900 Rpm
Three-Phase Only
Optional 208 and 230V motors available
on 1 to 20 hp models. Optional 460V
motors are available on 1 to 50 hp
models. All motors have rigid base
construction and ball bearings. Class B
insulation is on all motors.
Two-Speed/Two Winding Motors
60 Hz/1800/1200 Rpm
Three-Phase Only
Optional 208 and 230V motors available
on 1 to 20 hp models. Optional 460V
motors are available on 1 to 50 hp
models. All motors have rigid base
construction and ball bearings. Class B
insulation is on all motors.
Additional Options*
Inlet Hood and Birdscreen
Hood constructed of 18-gauge
galvanized steel. Birdscreen is 18-gauge
galvanized steel with one-inch square
openings.
V-Bank Filter Section
Not required when a mixing box is
specified. Constructed of 18-gauge
galvanized steel.
Dampers and Mixing Box
Motorized Return Air Damper
This option provides a way to recirculate
air, with the return air opening
downstream of the burner. This option
includes return air damper, a two-
position damper motor, linkage and
damper switch. It is not available with
two-speed motors.
Motorized 75/25 Damper
This option provides a way for
recirculating return air and allows
building pressure to control the amount
of air that is recirculated. This option
includes a return air damper, burner
profile plate damper, damper linkage,
and modulating pressure controller. It is
not available with two-speed motors.
Mixing Box — Temperature Control
This option provides a way for
recirculating return air and allows mixed
air temperature to determine the amount
of OA/RA. This option includes mixing
box with filter section, dampers, damper
actuator(s), and damper controls.
Mixing Box — Building Pressure Control
This option provides a way for
recirculating return air and allows
building pressure to control the amount
of air which is recirculated. This option
includes a mixing box with filter section,
dampers, damper actuator(s), and
damper controls (including a photohelic
differential pressure gauge).
Mixing Box — Manual Control
This option provides a way for
recirculating return air and using manual
control to determine the amount of OA/
RA. This option includes a mixing box
with filter section, dampers, damper
actuator(s), and a manual
potentiometer.
Inlet/Outlet Dampers
Motorized Inlet Damper
This option provides a shutoff damper.
This option includes an outside air
damper, damper motor with built-in end
switch, and linkage. It is not available
with a mixing box.
Motorized Outlet Damper
This option provides a shutoff damper.
This option includes a discharge damper,
two-position damper motor with a built-
in end switch, and linkage.
*Based on unit design, some options
can ship factory installed or field
installed. Contact the factory for
verification.