8
 
4
Performing initial setup
Initialsetupoptionsdenethetypeofsystemyouareinstalling:
• Residential or commercial
• Non-zoned or zoned
• Used with or without an Equipment Interface Module (THM5421) 
• Used with or without the TrueZONE Wireless Adapter (THM4000)
4.2  Link the thermostat to the equipment 
interface module.
4.2a Press and quickly release the 
CONNECT button on the EIM. 
Make sure the “Connected” light is 
flashing green.
NOTE: If the “Connected” light does 
NOT flash green, another system may 
be in the listening mode. Please exit the 
listening mode at the other system and 
then try again.
• Green Flashing: In Listening  
Mode - system is ready to add 
RedLINK devices.
• Green Steady: RedLINK devices are 
communicating.
• Red: RedLINK device(s) are NOT 
communicating. Check EIM and 
RedLINK devices.
4.2b While the “Connected” light is 
flashing green on the EIM, press 
Next on the thermostat. After a 
short delay, the screen will display 
Device Connected.
4.1  Follow prompts on the screen to 
select appropriate options.
NOTE: If you are connecting the 
thermostat to the TrueZONE Wireless 
Adapter (THM4000), refer to the 
TrueZONE instructions to link the 
thermostat and RedLINK accessories. 
Then go to step 4.5.
Next
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