Aprilaire 61000652C 8400 Tstat Thermostat User Manual


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12
SETUP & TESTING
SYSTEM SETUP INSTRUCTIONS (CONTINUED)
Thermostatmodels8448&8466havetheoptionofbeingusedinheatpumporheat/coolsystems.SwitchSW1
locatedonthebackofthethermostat’sfaceisusedtoselectthis.Systemsettingnumber00willonlybeshownon
these models to display the position of SW1.
SW1
HEATPUMP
HEAT/COOL
61000652C 8400 Tstat Install.indd 12 10/13/09 11:08:59 AM
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