ReplacingaSupcoPlenumThermostat.
1. Turnoffpowertounit.
2. Removetheaccesspanel.
3. Disconnecttwowiresattachedtothethermostat
terminals
4. Unscrewthescrewsholdingthethermostatinplace.
5. Removethethermostat.
6. Checkthethermostattemperatureinformationonthe
oldplenumthermostatandmakesureitmatches
Supcoreplacement.
Donotuseathermostatwith
higheropeningtemperature.
7. InsertthenewSupcothermostatandsecurewith
screws.
8. Re‐attachthewires.Youcanattachwirestoeither
terminal.Thereisnopolarity.
Makesuretheterminalsorwiresarenotdamagedand
fitsecurelyontheplenum.
Ifthewireterminalsareloose,replacethem.
9. Attachtheaccesspanel.
10. Turnonpower.
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