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3 69-2251EFS—01
M27305
M27306
1. Pullwiresthroughwirehole.
Position base on wall, level and
mark hole positions.
2. Drillholes(3/16”holesfor
drywall,7/32”holesforplas-
ter),thentapinsuppliedwall
anchors.
3. Pullwiresthroughbase,posi-
tion over anchors, and insert
screws. Check level if desired,
then tighten screws.
Base installation
1. Loosenscrewterminals,insertbarewires
beneathscrews,thenre-tightenscrews.
2. Pushanyexcesswirebackintothewall
opening
3. Plugthewallopeningwithnonflammable
insulation to prevent drafts from affecting
thermostat operation.
Terminal Designations
R Heating power. Connect to secondary
side of heating system transformer.
W1 Heat relay.
Y2 Cool relay, or
normally open hot water valve.
G Fanrelay(selectmodelsonly)
1 T822KandT827K
2 T822L
Wire specifications
Use18-gaugether mostatwire.Shi elded
cable is not req uired.
Wiring