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MICroteCh III unIt Controller
I/O expansion module jumper settings
Table 7: I/O expansion module jumper settings
I/O Expansion Description Jumper(s) Jumper Setting Model
Not Used JP1 JP1 Open
–
Not Used JP2 JP2 Open
–
Secondary Heating
Options
JP3 & JP4
JP3 Open
None
JP4 Open
JP3 Shorted
Supplemental Electric Heat
JP4 Open
JP3 Open
Boilerless Electric Heat
JP4 Shorted
Cooling / Dehumidication
Options
JP5 & JP6
JP5 Shorted
Without Hydronic Cooling
JP6 Open
JP5 Open
Hydronic Cooling (Waterside Economizer)
JP6 Shorted
Not Used JP7 JP7 Open –
Lead Compressor Option JP8
JP8 Open Compressor #1 is Lead (factory default setting)
JP8 Shorted Compressor #2 is Lead