Bulletin 30-020.007
Copyright © 2019 Unico Inc. Page 4
NOTICE TO INSTALLER AND
EQUIPMENT OWNER: RETAIN THIS
MANUAL AT THE JOB.
SUFFICIENT BUILDING INSULATION IS
ESSENTIAL FOR THE MOST ECONOMICAL
OPERATION.
INTRODUCTION
General. The information on the following pages is to
help the installer save time, provide the best possible
installation and insure continuous trouble-free
operation.
The Unico System is a complete indoor comfort system
that includes an indoor air handling unit and small duct
system. The air handler and duct system were designed
to operate together to provide the proper airflow in
every installation. The conditioned air is supplied
through a series of 2-inch ducts as a stream of air that
entrains and mixes the room air. This process of
aspiration produces a more even temperature
distribution in the room.
The Unico 'M' Series air-handling units consist of
various modules that are easily latched together. The
modules can be arranged in a vertical-up-flow, vertical
counter-flow and horizontal-flow configuration. They
can be combined as a heating-only, cooling-only, or
heating and cooling air handler unit. See Fig. 1.
All insulated Unico System modules feature closed-cell
insulation for improved sound attenuation. There is no
exposed fiberglass insulation.
Each module is available in five sizes: 1218, 2430,
3036, 3642, and 4860. There are three basic modules: a
blower module, a cooling module, and a heating
module. The blower module includes the blower
wheel, blower housing, motor, and electrical control
box.
The cooling module includes a cooling-only refrigerant
coil, a heat pump coil, or a chilled water coil. The
heating module is supplied as an empty cabinet with
room for a slide-in hot water coil.
The modules can be arranged to provide only the
options needed as shown in Figure 1 (with details on
pages 26 and 27). Heating-only systems require the
blower module, the heating module, and a hot water
coil. Cooling-only systems include the blower module
and a cooling module. For heating and cooling all the
modules are combined with coils. The system may even
be used for ventilation-only, using just the blower
module.
Unico designed and built blowers feature direct drive
motors or EC motors and are located in the air stream.
Each blower wheel is balanced to Unico specifications.
The blowers feature a twist-and-lock motor mount for
easy maintenance (see page 21). The motorized blower
assembly consists of the motor, which is mounted to the
inlet ring, and the wheel, which is mounted to the motor
shaft
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