Unit Options; Waterside Economizer; Smartsource Dehumidification; Simplified Dehumidification - Daikin MicroTech III Installation And Maintenance Manual

Unit Options

Waterside Economizer

■ Application:
The Microtech III controls the waterside economizer .
Upon a call for economizer operation via TB1-1, the
output to the 3-way diverting valve and the fan motor are
energized, allowing water flow through the economizer
coil and fan operation .
■ Items Required:
• Multi-stage thermostat or sensor
■ Unit Control Settings:
• I/O Expansion Module Jumper Settings:
• JP5 = Open
• JP6 = Shorted
Figure 10: Model GT unit with WSE and thermostat wiring
diagram
Model GT
Unit
R
C
G
TB-1
Y1
Y2
Figure 11: Models GS and GC unit with WSE and
thermostat wiring diagram
Model GS
Unit
R
C
G
TB-1
Y1
OM 1149-5
Thermostat
R 24VAC
C Common
G Fan
Y1 Cool Stage 1
Y2 Cool Stage 2
Y3 Cool Stage 3
Thermostat
R 24VAC
C Common
G Fan
Y1 Cool Stage 1
Y2 Cool Stage 2
22
M
ICro
SmartSource
Dehumidification

■ Simplified Dehumidification

■ Hot Gas Reheat Smart Dehumidification
■ Humidistat Controlled Dehumidification
■ Dehumidification Only
Simplified Dehumidification
■ Application:
By utilizing a basic thermostat and configuring the
Microtech III unit controller for this mode of operation,
the WSHP will provide maximum latent capacity by
optimizing blower fan speeds resulting in decreased
humidity levels in the conditioned space .
■ Items Required:
• Model GT = 3 stage thermostat
• Model GS, GC, VH = 2 stage thermostat
• Return air sensor
Note: This feature is not available if unit is controlled by
a wall sensor
■ Unit Control Settings:
• I/O Expansion Module Jumper Settings:
• JP5 = Shorted
• JP6 = Open
■ Wiring:
Figure 12: Model GT unit and thermostat simplified
dehumidification wiring diagram
Model GT
Unit
R
C
G
TB-1
Y1
Y2
Figure 13: Model GS unit and thermostat simplified
dehumidification wiring diagram
Model GS
Unit
R
C
G
TB-1
Y1
t III u C
eCh nIt ontroller
Thermostat
R 24VAC
C Common
G Fan
Y1 Cool Stage 1
Y2 Cool Stage 2
Y3 Cool Stage 3
Thermostat
R 24VAC
C Common
G Fan
Y1 Cool Stage 1
Y2 Cool Stage 2
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