Daikin OptiLine FSG Installation and operating instructions

Installation, Operation and Maintenance IM 1272
Group: Fan Coils
Part Number: 910243712
Date: July 2018
OptiLine™Vertical Stack Fan Coil
Model FSG

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Introduction..................................3
General ...................................3
Safety Information ............................3
Design and Take-o󰀨 Precautions ................4
Receiving Inspection ..........................4
Installation...................................5
Installation of Units with Risers Attached ..........5
Maintenance .................................7
Operating Instructions.........................8
Standard Thermostat Digital Programmable
Thermostat ................................8
Adjusting the Maximum CFM ...................8
Sequence of Operation ........................9
Troubleshooting .............................10
Startup Check List ...........................11
Wiring Diagrams .............................12
Addendum..................................16
Programmable Digital On–O󰀨 Valve and
Modulating Fan Control Thermostats ............16

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General
CAUTION
Sharp edges and coil surfaces are a potential injury hazard. Avoid contact
with them.
This manual contains the installation and operating instructions
for your an coil system. There are some precautions that
should be taken to derive maximum satisfaction from it.
Improper installation can result in unsatisfactory operation or
dangerous conditions.
Read this manual and any instructions packaged with separate
equipment prior to installation. Give this manual to the owner
and explain its provisions. The owner should retain this manual
for future reference.
Safety Information
NOTICE
The manufacturer’s warranty does not cover any damage or defect to
the air conditioner caused by the attachment or use of any components,
accessories or devices (other than those authorized by the manufacturer)
into, onto, or in conjunction with the air conditioner. you should be aware
that the use of unauthorized components, accessories or devices may
adversely affect the operation of the air conditioner and may also endanger
life and property. The manufacturer disclaims any responsibility for such
loss or injury resulting from the use of such unauthorized components,
accessories or devices.
WARNING
Provide adequate combustion and ventilation air to the unit space as
specied in the combustion and ventilation air section of these instructions.
WARNING
Install this unit only in a location and position as specied in the Mechanical
Installation section of these instructions. Provide adequate combustion and
ventilation air to the unit space as specied in the venting section of these
instructions.
DANGER
Combustion products must be discharged outdoors. Connect this unit to an
approved vent system only, as specied in Mechanical Installation section
of these instructions. Use only with type of gas approved for this unit. Refer
to the unit rating plate.
DANGER
Never test for gas leaks with an open ame. It can cause an explosion or re
resulting in property damage, personal injury or death. Use a commercially
available soap solution made specically for the detection of leaks to check
all connections, as specied in the Mechanical Installation section of these
instructions.
WARNING
Always install unit to operate within the unit’s intended temperature-rise
range with a duct system which has an external static pressure within the
allowable range, as specied in the Mechanical Installation section of these
instructions. See also unit rating plate.
WARNING
Units are not design certied to be installed inside the structure. Doing so
can cause inadequate unit performance as well as property damage and
carbon monoxide poisoning resulting in personal injury or death.

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Attention should be paid to the height of drywall which
encapsulates ductwork in a bulkhead. Note the height of the
side supply air opening shown in the submittal and ensure that
the drywall does not interfere with the side wall grille. Make
allowance for the 1" ange around the grille. Call Daikin at the
time of submittal review if side supply air openings need to be
lowered or rotated to a vertical position to avoid interference
with walls or doors.
The FSG vertical stacked fan coil unit is designed to have
drywall applied directly to the face of the unit. Floor sleeves
and extension sleeves through shear walls are not included.
It is important to accurately locate the oor sleeve relative to
the fan coil and the drywall.
Receiving Inspection
The entire shipment should be inspected for damage, either
readily visible or concealed. Any damage must be noted on the
freight bill by the carrier’s agent and Daikin notied within 24
hours.
Check riser projections at each end of the cabinet for damage
that would prevent making an acceptable piping connection.
Check internal piping, coil and valve packages for possible
transit damage. If contractor/installer deem it necessary
to tighten mechanical ttings Daikin does not assume any
responsibility for this procedure. It is stressed that the
component manufacturer’s recommended procedures be
strictly followed.
Thermostats, and other accessories which have been shipped
separately should be inspected for transit damage.
Electrical Connection
It is assumed that the fan coil unit will be in a dedicated
electrical circuit. If the unit is to be in a circuit which includes
electrical outlets or other electrical devices, Daikin must be
informed prior to releasing the units for production.
Handling
Avoid dropping or jarring the fan coil unit during o󰀪oading
and moving the unit into position. Do not lift the unit using the
riser pipes.
Unless otherwise requested by the customer at the time of
shop drawing approval, the cabinet insulation is left intact,
covering the supply air openings and, if applicable, the
secondary return air opening to prevent dust, snow or rain
from entering the unit. The installer is responsible for cutting
out the insulation and buttering the cut edge prior to installing
the grilles.
Accessories
Do not install grilles or thermostats until after the walls have
been painted. Caution the painter against spraying over the
labels on the front cover of the unit.
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The fan coil unit has a label pasted on the panel that shields
the motor/blower. The label shows either the oor and riser
number or the room number.The unit must be placed in the
correct location in the building in accordance with the label.
Handling
If the unit has risers attached, do not lift the unit using the riser
pipes. Protect the fan coil from rain and snow.

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Installation of Units with Risers Attached
WARNING
Use solder to connect the risers. Do not use Silfos (brazing) as this will
cause the pipe to overheat and the insulation to be damaged.
NOTICE
Daikin does not advise on the location or method of anchoring as this is
the responsibility of the engineering company retained to design the riser
system.
CAUTION
Sharp edges and coil surfaces are a potential injury hazard. Avoid contact
with them.
A rectangular opening is made in the oor slab, usually
sleeved before pouring the oor. Refer to the catalog or
submittals for sizes.
Rotate the unit from the horizontal position to vertical so that
the bottom end of the risers insert into the expanded end of the
risers on the unit below. 2" is allowed in the riser length for the
depth of the insertion. Shim the unit plumb.
Before making the solder joint, ensure that the run outs
from the supply and return risers are centered in the slots in
the cabinet. If this is not done there is considerable risk of
distorting the run out when the hot water riser expands causing
the run out to contact the edge of the slot in the sheet metal
potentially causing failures or leaks. Also ensure that the
condensate riser stub out is at 90° to the cabinet so that the
drain hose is not kinked.
Connect the risers by soldering (not brazing) using 95/5
solder. An additional cap of 50/50 solder can be added for
extra strength.
Ensure that the horizontal run-out from each riser is centered
in the slot in the cabinet and that the run-out from the riser
is at 90º as it enters the cabinet, prior to soldering the risers.
Anchoring the risers to the oor slabs is the responsibility
of the contractor. Shim the unit plumb. It is not necessary to
use a pad under the unit. Fire stopping the oor opening and
making good the riser insulation at the oor opening is the
responsibility of the contractor. Check that the drain hose is
not kinked before soldering the condensate riser. If the risers
incorporate expansion compensation loops, remove the
support brackets after anchoring the risers.
The fan coil unit has unions at the shut o󰀨 valves. These
ttings must be checked prior to pressure testing the system by
the contractor as part of the installation procedure. Mechanical
ttings can loosen during transportation and handling. If
contractor /installer deem it necessary to tighten mechanical
ttings Daikin does not assume any responsibility for this
procedure. It is stressed that the component manufacturer’s
recommended procedures be strictly followed.
The coil is pressure tested hydrostatically at the factory using
a propylene glycol solution. Trace amounts of this solution are
allowed to remain in the coil to ensure that the coil does not
freeze during transportation. After testing on site with water the
fan coil unit must not be exposed to freezing temperatures.
Riser anchoring is required for two purposes. The risers are
anchored to the oor slab at one or more points in the height
of the building so that they do not slip down under gravity.
The second reason is to spread the expansion in opposite
directions from the anchor point. Typically risers will be
anchored at the midpoint of the height of the building. If there
are riser expansion loops included in the risers inside the unit,
the anchor point will be at the midpoint between two sets of
loops. For example in a 16 story building there will be a loop
on the hot water riser on oor 8 and anchors at oors 4 and 12.
After anchoring, the risers are in e󰀨ect attached to the building
structure so it does not matter if the plastic straps holding the
risers to the unit break o󰀨 after installation.
• Complete the riser insulation at the solder joint is the
responsibility of the contractor
• Fire stop the oor opening in accordance with code
Flushing and Testing
The fan coil is normally equipped with ball type shut o󰀨 valves.
The unit is shipped with the ball valves open to the coil.
After checking mechanical ttings inside the unit for tightness,
it is recommended that the units on each riser stack are
pressure tested using compressed air or nitrogen.
• Close the ball valves and ush the riser system
• Open the supply side ball valve and bleed air from the
coils. The coil has a manual air vent for this purpose.
The top of each riser should also have an air vent (not
provided by the factory)
• Test the units and risers hydrostatically. Open the return
side ball valve after testing
• Check that the strainer mesh is not choked, if there are
strainers included with the unit

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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 t the ½" drywall ange 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 ange
around the return air/access opening is 2" deep. The type of
return air panel which has a hinged lter 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 ber insulation. Attach the
supply air duct.
NOTE: Supply air duct anges 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
qualied 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 t 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 tted to the opening which requires the lesser of
the two air ows (for example the bedroom).
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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 lter 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 ow 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.

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WARNING
Warnings indicate potentially hazardous situations, which can result in
property damage, severe personal injury, or death if not avoided.
CAUTION
Sharp edges and coil surfaces are a potential injury hazard. Avoid contact
with them.
Always isolate the unit electrically before removing the front
access panel. Do this by opening the circuit breaker (or other
switching device) in the distribution panel in the suite. Do not
use the fan switch as the means of isolation. There is a high
risk of electrocution if the unit is improperly isolated. If in doubt
have a qualied electrician perform the service work.
Ensure that the fan has stopped rotating before proceeding to
work within the unit. If the unit is equipped with a fuse or circuit
breaker, do not change out either of these devices with ones of
a higher Amp rating. The purpose of a fuse or circuit breaker is
to protect the power wiring to the unit.
Take care when working inside the unit. Sheet metal
components may have sharp edges.
If the black acrylic coating on the glass ber cabinet liner is
damaged, it must be patched to prevent glass ber particles
entering the air stream.
Every 3 Months
• Check/replace the lter
The lter can be one of two types: a 1" thick cardboard
framed type or a metal frame with lter media attached.
Units with a hinged lter door in the upper half of the grille
panel – Grasp the bottom edge of the door and sharply
pull the door forwards. Lift the door to the horizontal
position. The lter is now accessible and is removed by
sliding it upwards out of the channels attached to the coil.
Table 1: Filter Size Chart
Unit Size 03 – 04 06 – 08 10 – 12
1" Filter Size 12" × 20" 14" × 25" 16" × 25"
Annually
(before the start of the cooling season)
• Remove the return air/access panel from the wall.
Remove the two sheet metal screws which secure the
panel that shields the fan assembly. Pull the shield panel
sharply downward and remove.
• Vacuum the drain pan and check that the drain outlet is
not blocked. Pour water into the pan and check that it
drains quickly. If it appears to be partly blocked, remove
and clean the drain hose beneath the pan.
• If the coil surface is dirty, vacuum the surface which faces
the room. Take care not to damage the aluminum ns on
the coil. If the ns are attened, the performance of the
unit will be reduced.
• Inspect the surface of the cabinet liner for evidence of
dampness. The liner should be completely dry in all
areas. Vacuum excessive dust from the liner, taking care
not to damage the black acrylic coating on the liner. Do
not run the unit if the liner is damp as this can promote
mold growth. Determine the cause of the dampness. If
there is evidence of mold growth it might be necessary
to replace part or all of the liner. If in doubt consult a
remediation specialist.
• Fan, fan motor, control valve(s), electric heater, drain pan
over-ow switch, and thermostat do not require routine
maintenance.
NOTE: Fan motor has sealed bearings and does not require
additional lubrication.

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CAUTION
Equipment damage due to loose fasteners represents improper start-up
and equipment abuse. It is not covered by the warranty.
Turn ON the disconnect switch located behind the fan
enclosure cover to the “On” position.
Standard Thermostat Digital
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Select the mode, heating or cooling by pressing the “Mode”
button. Adjust the setpoint to desired temperature setting using
the up/down arrow buttons. Toggle the “Fan” button between
auto and run. In auto mode, the fan speed will vary based on
the di󰀨erence between room temperature and room setpoint.
This is the most economical operating mode. In “Run”
mode, the fan will operate a predetermined speed set in the
“Engineering parameters”.
The “On/O󰀨” button turns the unit ON or OFF. The thermostat
is pre-programmed which can be altered and programmed
for 5/2 day, 5, 1, 1 and 7 day. The battery back-up lasts for
5 years. See thermostat operating instructions for further
information. Refer to thermostat operating instructions for
other thermostats used.
NOTE: The thermostat must have 0-10VDC fan signal to
control fan speed. 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 a
thermostat with a 3-speed fan switch is used, a digital
to analogue interface board model EVO/10Y-4Spd
must be used to convert the fan signal to a 0-10VDC.
Adjusting the Maximum CFM
WARNING
If the maximum CFM is adjusted to a value above the design airow,
excessive air noise could occur
The maximum CFM is factory set to the closest nominal
design CFM, (300, 400, 600, 800, 1000 or 1200), but can be
eld adjusted if needed. With the 0-10VDC thermostat fan
signal, the max CFM can be adjusted by adjusting the blue
knob on the EBM fan board in the electrical box. See Fig. 1
and reference Table 1. To increase the maximum CFM, turn
the adjustment clockwise toward 100% and to reduce the
maximum CFM, adjust counter clock-wise toward 0%. The
chart below indicates the percent ow, CFM, relative to cabinet
size and external static pressure.
If a 3 speed fan control thermostat is used, the CFM for each
speed is factory set to be 50% on low speed, 75% on medium
speed, and 100% on high speed. Each motor speed CFM may
be adjusted by turning the adjustment pots on the EVO board.
Call 1=low speed, call 2=medium speed and call 3=high speed.
See Fig. 2
Figure 1: EVO 3 Spd Fan CFM Adjustment Board
Table 2: EBM Fan Speed Controller Setting Reference
Cabinet Size CFM 
@ free blow
Dial
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0.2"
Dial

0.4"
03 – 04 200 50% — —
03 – 04 300 60% 70% —
03 – 04 400 80% 90% —
06 – 08 500 50% 60% 70%
06 – 08 600 60% 70% 80%
06 – 08 700 70% 80% 90%
06 – 08 800 80% 90% 100%
10 – 12 900 50% 55% 60%
10 – 12 1000 55% 60% 65%
10 – 12 1100 60% 65% 70%
10 – 12 1200 65% 70% 75%
Figure 2: EVO 3 Spd Max CFM Adjustment Board
Rotate dial clockwise to increase
max CFM or counter clockwise to
decrease. (Used with 0-10VDC fan
speed signal)
Rotate dial(s) clockwise
to increase max CFM
or counter clockwise to
decrease. Call 1, 2 & 3
are used with 3 spd fan
thermostat. (Call 4 not used)

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Sequence of Operation
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The control valve is activated by the cool and heat outputs from
the thermostat which are connected to an aquastat. On a call
for cooling from the thermostat and the water temperature is
less than 65ºF, the aquastat energizes the control valve. If the
water temperature rises above 85ºF, the aquastat de-energizes
the control valve. On a call for heating from the thermostat
and the water temperature is greater than 85ºF, the aquastat
energizes the control valve. If the water temperature drops
below 65ºF, the aquastat de-energizes the control valve.
The aquastat has black, yellow and orange wire leads. The
switch closes for heating at 85ºF +/- 5F through BLK and ORG
and cooling at 65ºF +/- 5ºF through BLK and YEL.
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Heat Unit
The control valve and electric heat relay are activated by the
cool and heat outputs of the thermostat which are connected to
two aquastats labled A1 and A-2 on the wiring diagram. On a
call for cooling from the thermostat and the water temperature
is less than 65ºF, the A1 aquastat energizes the control
valve. If the water temperature rises above 85ºF, the aquastat
deenergizes the control valve. On a call for heating from the
thermostat and the water temperature is more than 100ºF, the
A2 aquastat energizes the control valve. If the water drops
below 75ºF, the aquastat de-energizes the control valve and
energizes the electric heat relay.
The A2 aquatat has black, yellow and orange wire leads. The
switch closes for heating at 100ºF +/- 5ºF through BL and
ORA and cooling at 75ºF +/- 5ºF through BL and YEL. The A1
aquastat has 2 brown wire leads. The switch closes for heating
at 85ºF +/- 5ºF and cooling at 65ºF +/- 5ºF.
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Heat Unit
The control valve and electric heat relay are activated by the
cool and heat outputs of the thermostat. No aquastats are
used. On a call for cooling from the thermostat, the thermostat
energizes the chilled water control valve. On a call for heating
from the thermostat, the thermostat heat output energizes the
electric heat relay. The control valve remains closed.

The hot water control valve and chilled water control valve are
activated by the cool and heat outputs of the thermostat. No
aquastats are used. On a call for cooling from the thermostat,
the thermostat cool output energizes the chilled water control
valve. On a call for heating from the thermostat, the thermostat
heat output energizes the heating water control valve
NOTE: Always refer to wiring diagram on the motor cover
panel to the determine the model and type of fan coil.
This can be viewed by lifting the hinged lter access
panel door.
See submittal for more information specic to the unit
and refer to the wiring diagram on the motor cover.
Figure 3: Hinged Filter Access Panel Door

IM 1272 • OPTILINE VERTICAL FAN COILS 10 www.DaikinApplied.com
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
• 2-Pipe valve control heating/cooling units
• 2-Pipe valve control heating/cooling auxiliary heat units
• 2-Pipe valve control heating/cooling with total electric
heat units
• 4-Pipe valve control heating/cooling units
Most problems can be promptly diagnosed at the thermostat.
The fan assembly is accessible and removable through the
return air opening, after removal of the return air grill and fan
access cover. The fan assembly has a ve wire plug harness
for power and 0-10VDC speed control signal.
The 2-pipe units are equipped with a change-over aqua-
stat mounted on the riser accessed through the return air
panel. The 2-pipe with auxiliary heat units have 2 aqua-stats
and the 2-pipe with primary electric heat have no aqua-stat.
Thermostats and control valves are 24VAC.
If Fan Motor Fails To Start
• Check main power supply, (circuit breaker) and unit
switch are “ON” and unit has power
• Set thermostat ON/OFF switch to “ON” and press fan
button to “ON”
• If fan will not operate, check that there is 24VAC coming
from the transformer
• If 24VAC is not present, replace the transformer
• If 24 VAC is present from the transformer, check the
thermostat wiring connections and motor wiring harness
plug and thermostat connections
• If all is good and system is 4-pipe (no aquastat), check
the DC voltage on terminals 11 & 12 on the thermostat. If
no voltage is present, replace the thermostat
• If the voltage is between 1 & 10VDC on terminals 11 &
12, and there is supply voltage to the fan motor, replace
the fan assembly
• If the system is change-over or has auxiliary electric
there, check the voltage at the aquastats*
• If no voltage is present at BLK or YEL, replace the
aquastat
* Aquastat with black, yellow and orange wire leads
closes for heating at 85F +/- 5F through BLK and ORG
and cooling at 65F +/ 5F through BLK and YEL.
Control Valve Fails to Operate
Check the voltage from the thermostat, if no voltage, replace
the thermostat. If 24 volts or a DC voltage for modulating
valves is present, replace the actuator. If the system has an
aquastat(s), check that 24 volts is present from the aquastat.
If 24 volts is present, replace the actuator. If no voltage is
present, replace the aquastat
Electric Heat Coil Fails to Operate
The electric heat coil module is located behind the motor
cover above the fan and consists of a relay operated by the
thermostat, a high temperature automatic limit control and
thermal cut-o󰀨 directly attached to the heating element. Both
the thermal cut o󰀨 and high temperature limit control are in the
heating coil power circuit.
The temperature limit control sensing element protrudes
through the control box directly above the heating element
to sense over heating of the coil including fan failure. This is
an auto-reset type and will reset when the temperature drops
below the preset limit.
The thermal cut o󰀨 is located below one of the coil terminals
directly attached to the coil element. Both safety devices can
be replaced easily in the eld if continuity test reveal an open
circuit. If these circuits are both closed, replace the heating
element by removing the 4 screws securing the mounting plate
and removing the entire heating assembly.


www.DaikinApplied.com 11 IM 1272 • OPTILINE VERTICAL FAN COILS

Receiving & Inspection
Unit received undamaged
Unit received as ordered
Handling & Installation
Unit installed level & square
Proper access is provided
Proper over-current protection is provided
Unit protected from dirt & foreign matter
Cooling/heating Connections
Protect valve package components from excessive heat
Pressure test all piping for leaks
Install drain lines and traps as required
Insulate all piping as required
Connect risers from master to secondary units if required
Connect risers to piping package if shipped separately or
supplied by others
Electrical Connections
Refer to unit wiring diagram
Connect incoming power service
Install and connect “shipped lose” components like
thermostat
Unit Start-up
Check for free and proper fan rotation
Record electrical supply voltage and amperage
Check all wiring for secure connections
Close all unit isolation valves
Flush water systems
Open all isolation valves after system ush
Check that Erie control valve is not in the “locked” open
position.
Vent water systems as required
All duct work and grills are in place
Filters are in place
Start blowers, pumps, chillers etc
Check all units for electrical over-load
Check all duct work and units for air leaks
Balance water systems as required
The Erie control valve can be “locked” open by manually
positioning the lever on the back of the valve actuator.
Ensure this released so after ushing to allow the valve to
be controlled by the thermostat
Balance air system as required
Record all nal settings for future reference
Check piping and walls for severe vibration
Check all dampers for proper operation (if any)
Verify heating and cooling operation
Ensure all access panels and grilles are securely 1 in
place
Verify condensate is owing

IM 1272 • OPTILINE VERTICAL FAN COILS 12 www.DaikinApplied.com


Figure 4: 2-pipe Changeover plus Electric Heat, 120 Volt, 250 mm
CVA
GND
6
DISC
F1
SHIELDED WIRE
BRN
BLK
C1
ORG
1
R4
XMR1
BLK
GRN
ORG ORG
BRN
1.0AMPS
FAN
MOTOR
M1
BLK
ORG
ORG
YEL
85F
A1
BLK
ORG
85F
A2
BRN
BRN
65F
YEL
BLK
15 11 12
5 1 2
TB1
1 2
5
6
YEL
BLK
QC3
5 8
2 1
QC3
BLK BLK BLK
BLK
BLK
N
L
L2 L1
MAX FUSE 15 AMPS
SYM
Description
DISC
SWITCH - 1 POLE - 120-277V - 30A
XMR1
TRANSFORMER-120/208/240/277 TO 24V-40VA-CLASS 2
F1
FUSE-250VAC-10A-TIME DELAY-MISC
M1
MOTOR - 120V - 0.15 HP
CS1
SENSOR-CURRENT-SOLID-FIXED SETPOINT
QC3
9 PIN QUICK CONNECT
HTR1
E-COIL - FANCOIL - 2.0KW - 120V - 1ST
R4
HEAT RELAY - SPST - 24V - 30A - RES
T6
HIGH LIMIT AUTO RESET, SPST
CVA
VALVE-ACTUATOR-NC-2&3WAY-24V
T1
THERMOSTAT-24VAC/10VDC-MOD OUT
A1 A2
TB1
TERMINAL STRIP
FSC
FAN SPEED CONTROLLER


www.DaikinApplied.com 13 IM 1272 • OPTILINE VERTICAL FAN COILS
Figure 5: 2-pipe, Changeover plus Electric Heat, 208 Volt, 250 mm
CVA
2
F2
F1
68
GND
SHIELDED WIRE
BRN
BLK
C1
ORG
1
R4
XMR1
BLK
GRN
ORG ORG
BLK
0.39 AMPS
FAN
MOTOR
M1
BLK
ORG
ORG
YEL
85F
A1
BLK
ORG
85F
A2
BRN
BRN
65F
YEL
BLK
15 11 12
5 1 2
MAX FUSE 12 AMPS
BLK
BLK
BLK
2
1
BLK
BLK
L2L1
TB1
1 2
5
6
YEL
BLK
QC3
5 8
2 1
QC3
L1 L2
SYM
Description
DISC
SWITCH - 2 POLE - 120/277V - 30A
XMR1
TRANSFORMER-120/208/240/277 TO 24V-40VA-CLASS 2
M1
MOTOR - 208V - 1/10 HP
QC3
9 PIN QUICK CONNECT
F1, F2
FUSE-600VAC-10A-TIME DELAY-CLASS CC
CS1
SENSOR-CURRENT-SOLID-FIXED SETPOINT
HTR1
E-COIL - FANCOIL - 3.5KW - 208V - 1ST
R4
HEAT RELAY - DPST - 24V - 25A - RES
T6
HIGH LIMIT AUTO RESET, DPST
CVA
VALVE-ACTUATOR-NC-2&3WAY-24V
T1
THERMOSTAT-24VAC/10VDC-MOD OUT
A1 A2
TB1
TERMINAL STRIP
FSC
FAN SPEED CONTROLLER

IM 1272 • OPTILINE VERTICAL FAN COILS 14 www.DaikinApplied.com
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Figure 6: 2-Pipe, Cooling Only, 120 Volt, 280 mm
CVA
DISC
GND
COOL
C
G2 G
2
TB1
XMR1
C1
1.4 AMPS
FAN
MOTOR
#22AWG - 2 COND
- SHIELD
#22AWG - 2 COND
- SHIELD
AC/DC
SHIELDED WIRE
GND
L
N
QC3
QC3
2
M1
L2
GND
SYM
Description
DISC
SWITCH - 1 POLE - 120/277V - 15A
XMR1
TRANSFORMER-120/208/240/277 TO 24V-40VA-CLASS 2
M1
EBM MOTOR - 120V - 1/5 HP
CVA
VALVE-ACTUATOR-NC-2&3WAY-24V
OFS
MICROSWITCH-CONDENSATE OVERFLOW
TB1
TERMINAL STRIP
QC3
9 PIN QUICK CONNECT
T1
THERMOSTAT-DIG-24V-2/4PIPE-DIG OUT-PROG
AC/DC
4 DIGITAL INPUTS, 0-10VDC ANALOG OUTPUT


www.DaikinApplied.com 15 IM 1272 • OPTILINE VERTICAL FAN COILS
Figure 7: 4-Pipe, 277 Volt, 310 mm
DISC
GND
CVA
HVA
2
TB1
XMR1
N
L
C
COOL
C1
#22AWG - 2 COND
- SHIELD
#22AWG - 2 COND
- SHIELD
AC/DC
SHIELDED WIRE
N
GND
NC
GND
1.8 AMPS
FAN
MOTOR
QC3
M1
2
QC3
SYM
Description
DISC
SWITCH - 1 POLE - 120/277V - 15A
XMR1
TRANSFORMER-120/208/240/277 TO 24V-40VA-CLASS 2
M1
MOTOR - 208/277 - 2/3 HP
QC3
9 PIN QUICK CONNECT
HVA CVA
VALVE-ACTUATOR-NC-2&3WAY-24V
T1
THERMOSTAT-DIG-24V-2/4 PIPE-DIG OUT
OFS
MICROSWITCH-CONDENSATE OVERFLOW
CG1
TERMINAL BLOCK-BARE METAL
AC/DC
4 DIGITAL INPUTS, 0-10VDC ANALOG OUTPUT
TB1
TERMINAL STRIP

IM 1272 • OPTILINE VERTICAL FAN COILS 16 www.DaikinApplied.com


󰀨
Modulating Fan Control Thermostats
Figure 8: Front and Back View of TE226 – 24 Vac Thermostat
Table 3: TE226 Components
# Item Description
1 LCD Display temperature and working status
2 MODE button Access to user and engineer menu and for setting conrmation or change ºC/ºF unit if pressed for over 3 seconds
3 FAN button Toggle to change Fan mode: Auto or Continuous
4 UP & DOWN buttons Increase and decrease setting or previous/next item
5 SET button Setting for Clock and Programmable Schedules
6On/O󰀨 button Turn ON/OFF thermostat
7 Set-point icons Display set-point temperature while it is ashing
8 Fan icons Indicate Fan status
9 Flake icon Indicate working in Cooling mode
10 Hot spring icon Indicate working in Heating mode
11 Flow icon Indicate working in ventilating mode
12 Working icon Indicate cooling/heating valve open
13 Clock Not used
14 Sleep Sleep mode is enable while it is shown
15 Moon Sign Indicate room unoccupied
16 Outdoor icon Indicate door/window open
17 Cover screw Screw to tighten back cover with front cover
18 Back plate Plate for mounting on electric box
19 Wiring terminal blocks Terminals for wiring
20 Mounting holes Holes for mounting on electric box
21 small 8888 Display time
22 Schedule number Programmable Schedule running or setting
23 Day Current day of Sunday ~ Saturday or setting
Front Back

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www.DaikinApplied.com 17 IM 1272 • OPTILINE VERTICAL FAN COILS
Installation
Mounting on electric box
1. Separate backplate from the controller by loosing the
cover screw.
2. Align the mounting holes on the screw holes of the
electric box (applicable to 65 × 65 or US standard box).
3. Fix the backplate on the electric box by tightening the
backplate screws. Suggest to use Philips wider “truss
head” or “washer head” #6-32 × 3/4" (20mm).
4. DO NOT let the bolt head rise above the wall of mounting
holes of backplate. It might cause the short circuit of the
controller.
Mounting front cover
Lock front cover on the backplate by tightening the cover screw
underneath with Philip screwdriver.
Wiring Example
1. All wires must be inserted above the retainers of
respective terminal block before tightening the captive
screws.
2. Select Normally Open or Normally Closed Cooling and
Heating valve Option in the Engineering Mode parameter
E20 and E21.
Figure 9: Wiring Diagram for TE226 – 24Vac Thermostat
Table 4: On Demand Output DO1 and DO2
Set in Engineering Mode
DO1 Cooling Output
on demand for cooling Parameter E20 Set To :
0 Vac 0
24 Vac 1
DO2 Heating Output
on demand for heating Parameter E21 SetTo:
0 Vac 0
24 Vac 1
AO2 RS ESI
ECM Fan – 0~10 VDC Remote Temperature
Sensor (NTC10K) Occupancy

IM 1272 • OPTILINE VERTICAL FAN COILS 18 www.DaikinApplied.com

Operation
User Mode Operation
The rst tier of operation includes the following settings to
operate (Figure 2):
1. Power switch
MODE
“ON” or “OFF” to start/stop the
System.
2. After the switching “ON”, press any button to start the
User Mode operation.
a. Press “MODE” button to switch over di󰀨erent
working modes. When MODE is pressed for more
than 3 seconds, the unit of temperature will toggle
to change to ºF or ºC.
b. Press “UP/DOWN” button to increase/decrease or
rotate the values of setting.
c. Press “FAN” button to toggle over di󰀨erent fan
modes.
d. Press “SET” button to set current date/time.
When SET is pressed for more than 3 seconds,
users can set the temperature for programmable
schedules.
3. It will return to normal display with the latest setting if
there’s no button pressed for 10 seconds.
Table 5: Display Descriptions
# Item Description Remarks
1 Normal Display Display current room or set-point temperature
and current time-day.
Setting “-SP-“parameter in engineer table to choose current room
or set-point temperature.
2
Temperature Setting
▼ ▲ Set the required temperature
3
Mode Select
MODE
1. Select the Working Mode: (1) Run/Halt/Stop
for schedule
2. When MODE is pressed for more than 3
seconds, the unit temperature will toggle to
change between ºF or ºC
RUN: Run schedules.
HALT: Pause “Current” Schedule and Use Manual SP.
 Stop Using All Schedules and Use Manual SP.
4
Fan Auto/Continuous
MODE
1. Change Fan Mode for Auto or Continuous
Mode.
2. Auto Mode will stop fan output during dead
band
3. Continuous mode will output low speed
during dead band
Low Speed Can Be Set Via FanL (E17) parameter in
Engineer Table
5
Time/ Date/ Schedule Setting
SET
1. Set current time in 12-or 24-hour format
2. Set Calendar and Day of Week
3. When set is pressed for more than 3
seconds, users can set temperature set
points for programmable schedules
Press SET to continue settings.
Press MODE, FAN, Or POWER Button to escape any time
during setting.


www.DaikinApplied.com 19 IM 1272 • OPTILINE VERTICAL FAN COILS
Figure 10: User Mode Operation Sequence
Figure 11: Overview for the Settings of Clock and Programmable Schedules
MODE
Press MODE, FAN, or POWER button to escape anytime during setting.

IM 1272 • OPTILINE VERTICAL FAN COILS 20 www.DaikinApplied.com

Figure 12: Detailed State Diagram for Clock Setting