OM 931-6 • MicroTech III Unit Controller for WSHP
16
www.DaikinApplied.com
s
tart
-
up
Initial Power up
Figure 8: I/O Expansion Board Configuration Jumper Terminals
I/O expansion module
configuration jumper
terminals
Table 7: I/O Expansion Board Configuration Jumper Settings
I/O Expansion Description
Jumper(s)
Jumper Setting
Model
Compressor Options
JP1
JP1
Open
Single Compressor Model (factory default setting)
JP1
Shorted
Dual Compressor Model
Hot Gas/Water Reheat (HGR)
Dehumidification
JP2
JP2
Open
None (default)
JP2
Shorted
Hot Gas / Water Reheat (HGR)
Secondary Heating Options*
JP3 &
JP4
JP3
Open
None
JP4
Open
JP3
Shorted
Supplemental Electric Heat
JP4
Open
JP3
Open
Boilerless Electric Heat
JP4
Shorted
Fan Speed Selection
JP5 &
JP6
JP5
Open
Single Speed Fan (PSC motor)
JP6
Open
JP5
Shorted
Two-Speed Fan (ECM motor)*
JP6
Open
JP5
Open
Three-Speed Fan*
JP6
Shorted
Not Used
JP7
JP7
Open
–
Lead Compressor Option
JP8
JP8
Open
Compressor #1 is Lead
JP8
Shorted
Compressor #2 is Lead (Valid for Dual Compressor Models Only)
* I/O Expansion module supplied with Secondary Heating Options (Boilerless or Supplemental Electric Heat Options) and ECM motor.
