IM 1272 • OPTILINE VERTICAL FAN COILS 6
www.DaikinApplied.com
Installation
Drywall Installation
The fan coil model series “FSG” has a cabinet which is
designed to be furred-in. Drywall can be directly attached to
the cabinet or the unit can be framed.
Direct Application
– The hinged air panel must be used. It
is designed to fit the ½" drywall flange around the return air /
access opening on the unit. Use drywall screws no longer than
1¼" and follow the instructions on the page in the submittals
which shows where the screws can be located to avoid
damaging internal components. When using the hinged panel,
drywall must be attached to the front. The sides and back can
be framed.
Framing
– Frame the unit using metal studs. The flange
around the return air/access opening is 2" deep. The type of
return air panel which has a hinged filter door in its upper half
is used with this type of installation. It is preferable that the stud
does not touch the fan coil cabinet so that any slight vibration
which may exist is not transferred to the stud.
Before installing the thermostat and grilles, the walls must
be painted. Instruct the painter not to spray over the labels
on the unit. After installation, dust must be vacuumed from
the coil surfaces, the drain pan, the motor windings and the
cabinet insulation.
Ducted Units
Remove the supply air opening knock-out in the top panel of
the fan coil. Cut out the cabinet insulation from the opening
and butter the cut edge if it is glass fiber insulation. Attach the
supply air duct.
NOTE:
Supply air duct flanges are not provided by the
factory.
Electrical Connection
The unit has a single point connection at the junction box
inside the unit. It might also have a disconnect switch
and/or a fuse. All electrical wiring must be in accordance
with the current version of the national and local codes. A
qualified electrician must carry out the work. The junction
box is located behind the fan/motor shield. Electrical power
to the unit should be disconnected by opening the remote
disconnect device prior to removing the fan/motor shield. All
wiring must enter the unit through designated openings and
not through the riser stub out openings.
Supply Air Grille Installation
The grille is a snap-in fit into the collar on the unit. If the unit
has a ducted supply, side supply air grilles are provided with a
balancing damper. If the unit has two unit mounted grilles and
is not ducted, one of the grilles is provided with a damper. This
grille is to be fitted to the opening which requires the lesser of
the two air flows (for example the bedroom).
Return Air/Access Panel Installation
Remove the hinged door by raising to the horizontal position
and gently pull out past the hinge pins. Place the return air
panel in place and align the pre-drilled holes and secure using
4 sheet metal screws. Re-install the hinged filter access door
using the same technique used to remove it.
Thermostat Installation
CAUTION
Adjusting fan RPM to a higher speed may result in excessive air flow noise.
Unit mounted thermostat
– Connect the wires from the
thermostat to the wire harness usually inside the electrical box
using the plug provided. Fit the thermostat onto the electrical
box using the machine screws provided. The electrical box is
located on the front of the unit, above the return air panel.
Remote mounted thermostat
– Run low voltage wires from
the 24V thermostat on the wall back to the terminal strip
inside the unit.
The thermostat must have a 0-10VDC fan speed control signal
to control the fan. A motor speed board model SPDM will allow
the contractor to adjust the maximum fan speed if the factory
set point is not suitable. If the thermostat has a 3 speed fan
control, the digital to analog interface board, EVO board model
EVO/10Y-4Spd must be used. This board has max RPM
adjustment pots where the CFM can be adjusted for each spd
if factory settings are not suitable.
