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