Instructions / Assembly

3.2 Remove the old thermostat cover

Removetheoldthermostat’sfrontcoverfromthewallbase.Somecoverspulloffeasily,whileothersmayneedto

bereleasedbyusingascrewdriver.

Youroldthermostatmayhaveasealedglasstubecontainingmercury.Becarefulnottodamagethetubeordisposeofthetubeinyourtrash.For

safedisposalinformation,pleaseseeMercuryNoticeonpage36.

CAUTION

3.3 Label wires

Tip: Taking a picture with a camera or smartphone can help you not only remember how wires are connected

totheterminals,butcanalsoensurethatyoulabelyourwirescorrectly.Mislabelingthewiresmayresultina

high energy bill or damage to your heating and cooling system.

Foreachwirethatcomesoutofwall,followthese4steps.

Note that this step is very important for conguring your system in section 4.5. Please follow

instruction carefully.

1.Locatetheterminalletterthatthewireisconnectedtointherstcolumnofthetable

2.Writedowntheoldthermostatterminalletterinthesecondcolumn