Daikin MicroTech I Instruction Manual

Installation and Maintenance IM 1285-4
Group: Applied Air Systems
Part Number: IM 1285
Date: January 2022
Self-Contained Systems
MicroTech®I to MicroTech®III Unit Controller Conversion

IM 1285-4 • MICROTECH III 2 www.DaikinApplied.com


Introduction..................................3
Warnings and Disclaimers......................3
Hazardous Information Messages ..............3
Approximate Labor Hours ......................3
Labeling Wires ..............................4
Installation...................................6
MicroTech I Display and Board Removal ..........6
Removing Temperature Sensors, Pressure Sensors
and Pressure Switches ........................6
Installing DIN Rails, MicroTech III MCB, Expansion
Modules, Relays, Terminal Blocks, and Wire
Raceways ..................................7
DIN Rails .................................7
MicroTech III and Expansion Modules ...........7
Relays ...................................8
Terminal Blocks ............................8
Wire Raceways ............................9
Installing Remote HMI Display.................9
Installing the T1 Transformer ..................9
Installing PC5, PC7, DHL Tubing and DSP
Transducer ................................9
Installing Freezestat.........................9
Installing Actuators for Waterside Economizer.....9
Installing Water Flow Sensor .................10
Installing the VFD .........................10
Wiring11
Wiring to the MicroTech III.....................11
Wiring the Terminal Blocks and Transformers . . . . 11
Wiring Power to the MicroTech III MCB .........11
Wiring Temperature Sensors . . . . . . . . . . . . . . . . . 12
Wiring Pressure Switches (PC5, PC7 and DHL)
and R63 Relay ............................13
Wiring High Pressure Switches 1/2 and
HP1/HP2 Relays ..........................14
Wiring High Pressure Switches 3/4 and
HP3/HP4 Relays ..........................14
Wiring Low Pressure Switches 1/2,
Frost Protection Switches 1/2, and Resistors ....14
Wiring Low Pressure Switches 3/4
Frost Protection Switches 3/4 ................14
Wire Freezestat ...........................16
Wiring Water Flow Sensor ...................16
Wiring Waterside Economizer and
Water Regulator/Bypass Valves...............16
Wiring the VFD .............................17
Wiring the Duct Static Pressure Sensor.........17
Programming the MicroTech III and VFD........17
Programming the MicroTech III ...............17
Programming the VFD ......................17
Completed Conversion .......................17
Appendix ...................................18
Appendix A ................................18
Appendix B ................................19
Appendix C ................................23
Appendix D ................................32
Appendix E ................................33
Appendix F ................................34
Appendix G ................................39
Appendix H ................................40

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www.DaikinApplied.com 3 IM 1285-4 • MICROTECH III
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The following compiles a list of warnings and notes associated
with the installation and operation of this kit. Make sure to
follow these warnings, as well as always having properly
trained technicians and electricians, or Daikin-authorized
technicians perform work.


Cautions indicate potentially hazardous situations, which can result in
personal injury or equipment damage if not avoided.

Warnings indicate potentially hazardous situations, which can result in
property damage, severe personal injury, or death if not avoided.

Dangers indicate a hazardous electrical situation which will result in death
or serious injury if not avoided.

Dangers indicate a hazardous gas situation which will result in death or
serious injury if not avoided.

Notices give important information concerning a process, procedure,
special handling or equipment attributes.

The MicroTech I to MicroTech III conversion will require 32-48
hours of labor. This time can be increased or decreased
depending on the experience and skill of the technician(s).
Table 1: Parts Kit (300062260) Components
  Quantity
Main Control Board - MTIII (MCB) 193407301 1
Expansion Module (EXP A,B, and C) 193407501 3
HMI Display 350147416 1
Controller Terminal Block – 2 pole 193410302 4
Controller Terminal Block – 3 pole 193410303 8
Controller Terminal Block – 5 pole 193410305 1
Controller Terminal Block – 6 pole 193410306 1
Controller Terminal Block – 7 pole 193410307 3
Controller Terminal Block – 8 pole 193410308 6
Terminal 2 × 2 spring Grey
2-row Jumper Ports 349930641 75
Terminal 2 × 2 Spring Green
2-row Jumper Ports (Ground) 349930647 5
Terminal Block End Stop Gray 874-144 12
Terminal Block End Plate Gray 349930741 12
Terminal Block Jumper – 2 Pole 349930942 2
Terminal Block Jumper – 3 Pole 349930943 1
Terminal Block Jumper – 4 Pole 349930944 2
Terminal Block Jumper – 5 Pole 349930945 15
Labeling Strips for Terminal
2 × 2 Spring Grey N/A N/A
Discharge Air Temperature Sensor (DAT) 193414602 1
Return Air Temperature Sensor (RAT) 332519704 1
Mixed Air Temperature Sensor (MAT) 193414602 1
Entering Water Temperature Sensor (EWT) 193414602 1
Sensor Plate Q910115696 2
Sensor Support 497596010 2
Duct Static Pressure Sensor (SPS1) 910117462 1
Freezestat (FS1) 72502001 1
24 VAC, 0-10VDC Actuators
(ACT 3 and ACT 4)
113149601
(Schneider) 2
Relay Subbase 193413701 5
24 VAC Relays (HP1-4 and R63) 193413601 5
DIN Rails (1 Meter) 349901938 2
White Wire Organizers 2" Depth 300044174 16
White Wire Organizers 2" Depth Cover 300044173 16
1 k ohm resistor for freezestat 44690110 2
1.5k ohm resistor for frost protection 44690151 1
T1 Transformer (480VAC >> 115VAC) 50VA 45684900 1
Connector Extension 193409701 3
Separator 193414802-03-04 4
Wire Connector Split Bolt 8-2 AWG 65812404 6

IM 1285-4 • MICROTECH III 4 www.DaikinApplied.com
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Table 2: Additional Parts Necessary

Label Maker
20 AWG 600 V wire
Spade Connectors
Network Communication Card

• Choose a Network Communication Card from the list
below if necessary. A 10 pin connector will also be
necessary with a Communication Card.
• The communication card is not included in the kit and
must be ordered separately

BACnet MSTP 90016710
BACnet Lon CAV 90016711
BACnet IP 90016709
BAC LonVAV 90016712
10 pin connector 300047027
BACnet MSTP 90016710
BACnet Lon CAV 90016711
BACnet IP 90016709
BAC LonVAV 90016712
10 pin connector 300047027
The purpose of this instruction manual is to guide a
technician through the process of converting a MicroTech I
Controller (MT I) to a MicroTech III Controller (MT III) on a
Self-Contained unit. The MT III controller has an advanced
navigation structure, improved metrics, trending data
capability and network compatibility. Each Self-Contained
unit will have small di󰀨erences, such as the number of
compressors or a VFD for the supply fan. Recognizing these
di󰀨erences and following the instructions throughout the
manual will ensure a successful conversion.

Follow all Lock-Out Tag-Out procedures to minimize risks of injury during
this procedure. Always use proper rigging and lifting procedures! Always
wear appropriate levels of PPE governed by the hazards which are present.

Figure 1 shows a typical control panel layout before the
conversion begins. Look for three electrical control boards
mounted to the control panel: Main Control Board (MCB),
Output Board, and Input Board (See Figure 2, Figure 3, and
Figure 4). Before removing the three boards, each of the
wires connected to the boards must be labeled with a label
maker. Labeling the wires will allow the technician to be more
organized and rewire the control panel correctly once the
MicroTech III is installed.
Figure 1: Typical Control Panel Layout
Figure 2: Main Control Board (MCB)

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www.DaikinApplied.com 5 IM 1285-4 • MICROTECH III
Figure 3: Output Board Figure 4: Input Board

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
Once each of the wires is labeled, unplug all wires from MCB,
Output Board, and Input Board. Leave all paired wires in their
respective plugs to keep them organized. Unscrew each of
the boards from the control panel. Remove the wires from the
back of the MT I Display. Unscrew the display and remove from
control panel. Figure 5 below shows the control panel with all
wiring labeled and boards removed.
Figure 5: Control Panel without Components


The following temperature sensors will need to be removed
from the unit: DAT, RAT, MAT, EWT. Be aware and take note of
the mounting location for each of these sensors because new
sensors will be remounted and wired to the MT III MCB later on
in this manual.
If the PC5, PC7 and DHL tubing does not need replacing, then
save existing tubing. Be aware and take note of the high and
low side of pressure designations to avoid erroneous readings
after install.

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www.DaikinApplied.com 7 IM 1285-4 • MICROTECH III
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

Two separate DIN rails are required to mount the MT III,
expansion modules, relays, and terminal blocks in the
control panel. Position each 1 meter DIN rail in the control
panel as shown in Figure 6 below. Use a level to ensure the
components will mount properly to each DIN Rail. Screw
through the DIN rail holes and into the control panel sheet
metal backing. Adjust DIN rails as needed as space is limited
within the control panel.
 Use the image in Appendix H on page 41 as a
guide when laying out the components in the control
panel.
Figure 6: DIN Rails

Slide the MT III MCB onto the DIN rail and engage the tabs
to secure it in place. Depending on the application, one or
more Expansion Modules may be needed to be connected
to the MT III MCB. To install an Expansion Module, slide the
8-pin connector into the left side of the Module and then slide
the other end into the right side of the MT III MCB. Multiple
Expansion Modules can be mounted to the right of the prior
module as shown in Figure 7. Once each of the Expansion
Modules is installed, they must be addressed by setting the
dip switches. In the lower right corner of an Expansion Module,
there are six white switches with blue backing. Appendix A
shows how these dip switches should be set, depending on the
type of Expansion Board.
 The last Expansion Module must have the sixth dip
switch in the “up” position. The sixth switch acts as an
end-of-line resistor and stops the MT III from looking
for more Expansion Modules. See Appendix A on
page 18 for details.
Figure 7: Expansion Modules

IM 1285-4 • MICROTECH III 8 www.DaikinApplied.com


High Pressure Switch 1 (HP1), High Pressure Switch 2 (HP2),
High Pressure Switch 3 (HP3), and High Pressure Switch 4
(HP4) each require a relay to indicate a high pressure alarm
on the MT III. If any of the High Pressure Switches open, their
respective relay will de-energize and the set of dry contacts
will open. This will open the circuit to generate a high pressure
alarm on the MT III. The R63 relay is necessary to indicate
when the DHL switch is open. The R11 relay is required as
part of the Water Flow Switch function. Slide the six 24 VAC
relays onto the DIN rail. Spacers can be used to separate the
MT III Expansion Modules from the relays. See Figure 7 for an
example how the four relays are mounted on the DIN rail
 If the unit does not have a Water Flow Switch or one
is not required, relay R11 is not necessary.
The number of High Pressure Switch relays required
depends upon the number of compressors/circuits in
the unit. Add or remove relays from the installation as
necessary. See the wiring section of this manual for
more information on where to wire additional relays
for more than four compressors.

In order to ensure organization and accuracy when wiring,
ve terminal blocks are required to be installed in the control
panel of the unit. Each terminal block needs to be mounted
on a DIN rail and is assembled by sliding each of the singular
pieces together to form a block. Use the end plates to hold the
terminal block pieces in place. The table below designates how
many pieces are needed for each terminal block assembly. The
white strip that designates the terminal numbers snaps into
place in the center of each terminal block. See Figure 8 and
Figure 9 for an example of the singular terminal block pieces
and an assembled terminal block.
 Mechanical jumpers need to be installed across the
bottom of each of terminal blocks, except TB3, in
order to create an equal potential through the block.
See Figure 15.
Table 3: Terminal Block Quantities
  
TB1A 115 VAC + 2
TB1B 115 VAC Common 2
TB2A 24 VAC + 8
TB2B 24 VAC Common 8
TBG Ground 5
TB3 General 50
Figure 8: Single Terminal Block Pieces
Figure 9: Assembled Terminal Block

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www.DaikinApplied.com 9 IM 1285-4 • MICROTECH III

The white wire raceways are designed to ensure an organized
control panel. Mount the wire raceways as shown in the
diagram in Appendix H on page 41. Fasten wire raceways to
the control panel with screws.

Install the Remote HMI Display above the control panel in
place of the old MT I display. Mount the Remote HMI Display
by using the magnets found on the back of the display. See IM
1005 for details on wiring.

The MT III control panel requires two di󰀨erent transformers.
T1 transforms 480V to 115V and T2 transforms 480V to 24V.
The T2 transformer already exists within the self-contained
unit’s control panel. Mount the T1 transformer below the T2
transformer by screwing it into the control panel.


Install new tubing for the pressure switches, if necessary, and
conrm that it matches the diagram in Figure 10. If the unit
requires a VFD, a Duct Static Pressure transducer (DSP) will
need to be installed. The DSP is installed by mounting it on the
top DIN rail. See Figure 11.
Figure 10: New DSP Tubing Diagram
Figure 11: Duct Static Pressure (DSP) Transducer

A non-averaging type freezestat (FS1) is used to protect
hydronic coils from subfreezing temperatures. The control is
mounted on the entering face of the economizer coil. Upon
sensing a temperature above specication, the unit shuts
down, opens the hydronic control valves, and sends an alarm
indication via the MicroTech III controller. The freezestat has a
eld-adjustable set point range of 35°F to 45°F. To change the
set point, turn the adjustment screw until the pointer is opposite
the desired cutout point. The adjustment screw is accessible at
the bottom of the freezestat switch or at the top when the cover
is removed.


A unit with Waterside Economizer Application requires two
valves controlled by separate actuators. One valve is for the
economizer and the other valve is the water regulator/bypass.
Each of these valves has their own actuator, but function
oppositely from each other. When the economizer valve opens,
the water regulator/bypass valve will close and vice versa.
Each actuator will need to be mounted with its polarity wired for
direct or reverse acting function. A 0 VDC signal will fully close
the economizer valve and the water regulator/bypass valve will
be fully open. A 10 VDC signal will fully open the economizer
valve and the water regulator/bypass valve will be fully closed.
See Figure 12.
 There may be several di󰀨erent types of valves
depending on the age of the unit. Field modication
may be required before installing the actuator.
Figure 12: Actuators for Waterside Economizer
TO SUPPLY
FAN PLENUM
HI LO
HI
LO
HI
LO
PC7
PC5
DHL
TO ENTERING
AIR SIDE OF
THE FILTERS
TO LEAVING
AIR SIDE OF
THE FILTERS

IM 1285-4 • MICROTECH III 10 www.DaikinApplied.com


If the unit contains a water ow sensor, it does not need to
be replaced. Relay R11 is wired to the output of this switch to
close a set of dry contact, which will complete a circuit on the
MTIII indicating water ow. If there is not a Water Flow Sensor,
a jumper will need to be wired to the MCB to avoid nuisance
alarms on the MT III. The wiring is described later on in this
manual.

A unit designed for a Variable Air Volume Application will
need a VFD installed for desired operation. The VFD can be
mounted using screws on the outer frame of the unit to the left
or right of control panel. Two holes need to be drilled below
the VFD and into the control panel for power and signal wiring
conduit. See Figure 13 and Figure 14.
 Daikin only supports installing ABB (ACS320,
ACH550, and ACH580), Schneider (ATV212) or
Danfoss (FC102) VFDs. The installation location of
the VFD is dependent on the technician. They must
choose a location with proper ventilation to avoid
overheating. An example of an ABB VFD mounting is
shown in Figure 13 and Figure 14.
Figure 13: Mounting VFD
Figure 14: VFD Installed

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www.DaikinApplied.com 11 IM 1285-4 • MICROTECH III



Power must NOT be applied to the MT III or other devices when wiring to
the controller.
After all of the sensors, switches, relays, actuators, controllers
and modules are installed, the wiring to the MicroTech III can
begin. A full wiring diagram can be found in Appendix B on
page 19. 20 AWG 600 V rated wire is recommended. Use
the wire raceways around the edges of the control panel to
ensure neatness and terminate wires on the MicroTech III
correctly. Landing a voltage wire on the wrong controller could
blow the internal MT III fuse.


Terminal Blocks
Table 3 on page 8 shows, terminal blocks TB1A, TB1B,
TB2A, TB2B and TBG are each designated for a specic
voltage potential. Mechanical jumpers must be installed across
each of the terminal blocks in order to create an equal potential
through the block. The individual TBG terminal block pieces will
be grounded to the unit’s case through the DIN rail. TB1B and
TB2B need to receive their potential from TBG and then jump
across the terminal blocks. See diagram in Figure 15.
Transformers
The secondary’s of the T1 and T2 transformers each consist
of a positive (+) and a common potential. Table 3 shows each
terminal block is designated for a specic potential. Follow the
diagram below in Figure 15 and the schematic in Appendix B
when wiring the transformers

The MT III MCB is powered by 24 VAC from T2. On the MCB,
wire T1-G to TB2A-101 and T1-G0 to TB2B-101.
Figure 15: Typical Transformer Schematic
MT III MCB
EXP A
EXP B
EXP C
PC5
PC7
DHL
SPS1
TB3
TB2A
TB2B
TB1A
TB1B
TBG
Wire Raceway
Wire Raceway
Wire Raceway
Wire Raceway
Wire Raceway
Relays
TB1A
TB2A
TB1B
TB2B
TBG
Orange: 24 VAC +
Purple: 24 VAC Common
Red: 120 VAC +
Blue: 120 VAC Common
Note: Each of the separate terminal blocks shown above need to have an equal voltage
across all of the terminals. The colored lines show what voltage should exist on each block.
TB1A should have 120 VAC + on each terminal on the block and TB1B should have 24 VAC
+ on each terminal on the block. TB1B and TB2B are “common” and share the voltage from
the TBG (ground); this voltage is then jumped through the blocks. The TBG block is
grounded through the DIN rail to the case. TB3 (not shown here) will not have the same
voltage across all the terminals and jumpers are not needed.

IM 1285-4 • MICROTECH III 12 www.DaikinApplied.com


Mount the DAT, RAT, MAT, and EWT temperature sensors in
the correct location. Guide the wires for each sensor into the
control panel. Use the sensor plate and plastic sensor support
when installing the DAT and RAT sensors. Follow the wiring
diagram in Figure 16.
 The RAT sensor needs to be mounted far enough
down the duct to avoid being inuenced by the
outside air temperature.
Figure 16: Sensor Wiring Diagram


www.DaikinApplied.com 13 IM 1285-4 • MICROTECH III

The PC5 pressure switch wires directly to the MT III as shown
below in Figure 17. PC5 is a normally closed switch that
completes a circuit between DI2 and M. If the switch opens, the
circuit breaks and generates a dirty lter alarm.
The PC7 pressure switch is wired in series with the R63 NO
contact and MT III shown in Figure 17. PC7 is a normally
closed switch that completes a circuit between DI1 and M. If
the switch opens, the circuit breaks and an Airow Fault alarm
will occur after three attempts.
The DHL switch is wired in series with the R63 relay shown in
Figure 18. The R63 relay is energized with 24 VAC from TB2A-
104 as long as the DHL switch is closed. Three sets of NO dry
contacts from the R63 relay are wired to the MT III: DI4 (line
220), DI1 (line 225) and DI2 (line 868) on the VFD.
 If the unit was selected for constant volume, then no
DHL would be installed.
Figure 17: PC7 Pressure Switch
Figure 18: R63 Relay

IM 1285-4 • MICROTECH III 14 www.DaikinApplied.com



HP1 and HP2 relays are wired in parallel to the HP1 and HP2
switches. When either of the high pressure switches open,
the HP1/HP2 relays are de-energized and the 115 VAC circuit
opens at DI5/DI6 on the MT III MCB. Figure 19 shows the
wiring for High Pressure Switch 1 (HP1) and High Pressure
Switch 2 (HP2).


The HP3 and HP4 relays are wired in parallel to the HP1 and
HP2 switches. When either of the high pressure switches
open, the HP3/HP4 relays are de-energized and 24 VAC is
removed from X3/X4 on the MT III MCB. Figure 20 shows the
wiring for High Pressure Switch 3 (HP3) and High Pressure
Switch 4 (HP4).
 See schematic in Appendix B for information on
wiring High Pressure Switches and relays for units
with more than four compressors. Reference the I/O
charts found in IM 919 for wiring terminal information.


For compressor number one, the LP1 and FP1 switches are
wired in series with a 1.5kΩ resistor. For compressor number
two, the LP2 and FP2 switches are wired in series with a 1kΩ
resistor. The X2 input on the MT III MCB will read a resistance
value input depending on which switch opens. Figure 19 shows
the wiring for Low Pressure Switch 1 (LP1), Low Pressure
Switch 2 (LP2), Frost Protection Switch 1 (FP1) and Frost
Protection Switch 2 (FP2).


For compressor number three, the LP3 and FP3 are wired in
series and into X1 on Expansion Module C. For compressor
four, the LP4 and FP4 are wired in series into X2 on Expansion
Module C. Figure 20 shows the wiring for the Low Pressure
Switch 3 (LP3), Low Pressure Switch 4 (LP4), Frost Protection
Switch 3 (FS3), and Frost Protection Switch 4 (FS4).
 See schematic in Appendix B for information on
wiring High Pressure Switches and relays for units
with more than four compressors. Reference the I/O
charts found in IM 919 for wiring terminal information.


www.DaikinApplied.com 15 IM 1285-4 • MICROTECH III
Figure 19: High Pressure Switch 1 (HP1)
Figure 20: Low Pressure Switch 1 (LP1)

IM 1285-4 • MICROTECH III 16 www.DaikinApplied.com


The Freezestat (FS1) is a temperature-based switch that is
designed to open at low temperatures in order to protect the
coil. The Freezestat should be wired in series with a 1 kΩ
resistor. When the Freezestat opens the circuit between X5
and M on the MT III MCB, the unit will read an open signal and
alarm. See Figure 21.

The water ow sensor is powered by 24 VAC from transformer
T2. Relay R11 closes a set of NO contacts on X5 on Expansion
Module C when the water ow sensor detects water ow. See
Figure 21.
 If there is no Water Flow Sensor on the unit, a jumper
needs to be wired between X5 and M on the EXP-A
to avoid nuisance alarms.


The Waterside Economizer valve actuator (ACT3) and Water
Regulator/Bypass valve actuator (ACT4) will be supplied
24+ VAC and 24 VAC Common from the respective terminal
blocks. Land the 2-10 VDC input signal T9-X7 on the MT III
and to terminal 3 on the actuators. These will also need to be
grounded. See Figure 22 for proper wiring.
Figure 21: Expansion Module C
Figure 22: Water Regulator and Bypass Valves


www.DaikinApplied.com 17 IM 1285-4 • MICROTECH III

A VFD on the Supply Fan motor is required if the unit is
designed for a Variable Air Volume application. The MT III and
VFD communicate drive status and speed through Modbus.
The jumpers shown on VFD are necessary. See an example of
the ABB VFD wiring diagram in Figure 23. Wiring for Schneider
and Danfoss VFDs can be found in Appendix G. Refer to
manual OM 844 and OM 1190 for information on Schneider
and ABB VFDs, respectively.
 Once the VFD is installed and wired correctly,
the parameters for the VFD must be set. See
“Programming the VFD” on page 17 in this manual
for instructions.
Figure 23: VFD Wiring Diagram

If there is an ABB, Schneider or Danfoss VFD installed, the
Duct Static Pressure sensor wires directly to the VFD. The
4-20mA output signal from the DSP sensor is wired to the AI1
terminal on the ABB VFD. The MT III reads in the DSP sensor
signal through Modbus and sends a speed signal to the VFD
in order to maintain the DSP set point. See Figure 23. See
Appendix G on page 40 for DSP wiring on Schenider and
Danfoss VFDs.


Once the MT III and all of the auxiliary electrical devices are
installed and wired, the controller will need to be programmed.
There are three tasks when programming the MT III controller:
Verify and Update Software Code, Set Unit Conguration, and
Set Parameters.
Verify and Update Software Code
The unit’s software code must be updated to the newest code.
See the SIL in Appendix C on page 23 for instructions on
how to upload code to the MT III controller.
Set Unit Conguration
Each MT III has a unique Unit Conguration that must be set
according to the unit’s features and capabilities. See IM 919 for
instructions and unit conguration options.
Set Parameters
After the software code is updated and the unit conguration is
set, the parameters on the MT III will need to be set.

After the VFD is installed and wired, the parameters need to be
set. See charts in Appendix D through Appendix F and set the
parameters depending on the type of drive.

Figure 24 shows a sample control panel after the conversion
is complete. Be aware that the image below does not include
the white wire organizers or standard terminal blocks used in
this manual. The image should be used as a reference. The
nal product will vary slightly depending on the technician and
job site.
Figure 24: Completed Conversion

IM 1285-4 • MICROTECH III 18 www.DaikinApplied.com



Figure 25: Dip Switch Settings
Expansion
Board A
Switch #5 in the up
position (all others down)
Expansion
Board B
Switch #4 in the up
position (all others down)
Expansion
Board C
Switch #4 and #5 in the
up position (all others
down)
Expansion
Board D
Switch #3 in the up
position (all others down)
Expansion
Board E
Switch #3 and #5 in the
up position (all others
down)
Dipswitch #6
Switch #6  be in the
up position on the last
expansion board in the
string regardless whether
it is A, B, C, D, or E.


www.DaikinApplied.com 19 IM 1285-4 • MICROTECH III

Figure 26: 200s Wiring Diagram

IM 1285-4 • MICROTECH III 20 www.DaikinApplied.com

Figure 26 continued: 200s Wiring Diagram