First Co UC-HW (without installed pump) - Manual (Page 2)

****** WARNING ******
Any devices such as fan
switches or thermostats that
have been furnished by the
factory for fi eld installation
must be wired in strict accor-
dance with the wiring diagram
that is supplied with the unit.
Failure 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
name-
plate data to provide information required
for necessary fi eld wiring. Refer to fi gure
2 for points of entry of the wiring into the
cabinet.
unit and may vary from unit to unit.
• When soldering or brazing to the
unit, it is recommended to have a fi re
extinguisher readily available. When
soldering close to valve packages or
other components, heat shields or wet
rags are required to prevent damage.
• When the fan coil unit is in opera-
tion 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 overfl ow
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 fi lter media installation to en-
sure that it is installed correctly. Use the
directional arrows or other information
on the fi lter to determine the proper fl ow
direction.
NOISE
These fan coil units are designed for
quiet operation, however, all air condition-
ing equipment will transfer some amount
of noise to the conditioned space. This
should be taken into consideration 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 manu-
facturer's recommendations.
****** 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 equip-
ment also have a Class 2 transformer
furnished, care must be taken to pre-
vent interconnecting outputs of the two
transformers by using a thermostat with
isolating 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 at-
tempted without fi rst ensuring that the fan
coil is completely disconnected from the
power source and locked out. Always
verify that a good ground connection
exists prior to energizing any power
sources.
• Always review the nameplate on each
unit for proper voltage and control confi g-
urations. This information is determined
from the components and wiring of the
UC-HW 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
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 ******
When connecting piping to
fan coil units, do not bend or
reposition the coil header tub-
ing for alignment purposes.
This could cause a tubing
fracture resulting in a water
leak when water pressure is
applied to the system.
****** WARNING ******
Failure to perform modifi ca-
tions for front drain installa-
tion may result in structural
and equipment damage.
For front drain applications a tab must
be removed from the inner front edge of
the unit as shown in Fig 5. This opera-
tion must be performed after the unit is
installed to prevent damage to the front
of the unit.
For installation of a thermostatic expan-
sion valve see Fig. 6.