Company UCQB Series Installation Manual

****** WARNING ******
Any devices such as fan
switches or thermostats that
have been furnished by the fac-
tory for field installation must
be wired in strict accordance
with the wiring diagram that is
supplied with the unit. Fail-
ure to do so could result in
damage to components and
will void all warranties.
ELECTRICAL
All wiring must comply with local and
national code requirements. Units are
provided with wiring diagrams and
nameplate data to provide information
required for necessary field wiring. Re-
fer to figure 2 for points of entry of the
wiring into the cabinet.
of the unit and may vary from unit to unit.
• When soldering or brazing to the unit,
it is recommended to have a fire extin-
guisher readily available. When solder-
ing close to valve packages or other
components, heat shields or wet rags
are required to prevent damage.
• When the fan coil unit is in operation
components are rotating at high
speeds.
• Units must be installed level to ensure
proper drainage and operation.
• Check unit prior to operation to ensure
that the condensate water will drain to-
ward the drain connection. An overflow
drain or an auxiliary drain pan under the
fan coil may be required as a back up to
a clogged primary drain.
• On units with plastic drain pans DO
NOT tighten more than hand tight.
• Be sure that the drain pan is free from
foreign material prior to start up.
• Check filter media installation to en-
sure that it is installed correctly. Use the
directional arrows or other information
on the filter to determine the proper flow
direction.
NOISE
These fan coil units are designed for
quiet operation, however, all air condi-
tioning equipment will transfer some
amount of noise to the conditioned
space. This should be taken into consid-
eration when planning the location of the
equipment.
COOLING COIL PIPING
These fan coil units are supplied with a
direct expansion refrigerant coil. The
suction and liquid lines must be sized in
accordance with the outdoor unit
manufacturer's recommendations.
Condensate drain lines must be in-
stalled with adequate slope away from
the unit to assure positive drainage.
Since the drain pan is located on the
suction side of the blower, a negative
pressure exists at the drain pan and a
minimum trap of 1-1/2 inches must be
provided in the drain line to assure
proper drainage.
NOTE: If a Condensate Overflow Shut-
off Switch, that is designed to be installed
in the drain line, is used in
place of a
secondary drain line, then the cut-off
switch should be located in the primary
drain line between the fan coil unit and
the P-trap.
****** WARNING ******
Do not touch any rotating
component with any object.
Damage to the equipment and
personal injury can occur.
These units may be provided with a
Class 2 transformer for 24-volt control
circuits. Should any add-on equipment
also have a Class 2 transformer fur-
nished, care must be taken to prevent
interconnecting outputs of the two trans-
formers by using a thermostat with iso-
lating contacts.
INSTALLATION
PRECAUTIONS
Installation of this fan coil should only
be performed by a licensed contractor to
ensure proper installation and the safety
of the installer. The following are some
precautions to be followed for typical
installations.
• Always use proper tools and equip-
ment.
• No wiring or other work should be
attempted without first ensuring that the
fan coil is completely disconnected from
the power source and locked out. Always
verify that a good ground connection ex-
ists prior to energizing any power
sources.
• Always review the nameplate on each
unit for proper voltage and control con-
figurations. This information is deter-
mined from the components and wiring
UCQ RECESSED WALL MOUNTING
CROSS MEMBER - TOP & BOTTOM
(PLACE UPPER CROSS MEMBER 3"
ABOVE UC UNIT)
ATTACH UNIT TO FRAME USING 6
SCREWS / NAILS IN CABINET AT
LOCATIONS SHOWN
VERTICAL 2 X 4
WALL STUDS
BRACKET PLACEMENT FOR
HANGING IN A CLOSET
MOUNT UNIT FLUSH
WITH DRY WALL
(1/2" MIN. IN FRONT
OF WALL STUD)
LEAVE SUFFICIENT
SPACE FOR DRAIN
PIPING
10" TO 12" MINIMUM
RECOMMENDED
SUPPORT FRAMING
Figure 1
****** WARNING ******
On units with plastic drain
pans the drain connections
must be made hand tight only.