Honeywell Easy-To-See T87N1000 - Installation and Wiring Guide; Subbase and Coverplate Mounting; Thermostat Terminal Designations; Wiring Notes and Specifications

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3 69-1840EFS—03
1. Pull wires through wire
hole. Position coverplate
on wall, level and mark hole
positions.
2. Drillholes(3/16”fordrywall,
7/32”forplaster)andtapin
supplied wall anchors.
3. Pullwirethroughcoverplate
andsubbase,positionover
anchors, then insert and
tighten mounting screws.
Checklevelifdesired.
4. Applythelarge-printlabels
to the coverplate, matching
thelabelsonthesubbase.
1. Loosenscrewterminals,insertwires
intoterminalblock,thenre-tighten
screws.
2. Pushexcesswirebackintothewall
opening.
3. Plugthewallopeningwith
nonflammableinsulationtoprevent
draftsfromaffectingthermostat
operation.
Terminal Designations
W Heat relay.
Y Compressor contactor.
G Fanrelay.
O Heat pump changeover valve
energized in cooling.
Rc Cooling power. Connect to
secondarysideofcoolingsystem
transformer.
R Heating power. Connect to
secondarysideofheatingsystem
transformer.
B Heat pump changeover valve
energized in heating.
Wiring
NOTES
R & Rc terminals
Insingle-transformersystem,leavemetal
jumperinplacebetweenR&Rc. Remove
metaljumperiftwo-transformersystem.
Heat pump systems
Ifwiringtoaheatpump,useasmallpiece
ofwire(notsupplied)toconnectterminalsW
and Y.
Wire specifications
Use 18- to 22-gauge thermostat wire.
Shieldedcableisnotrequired.
R
G
W
Y
B
Rc
O
E
F
Coverplate
Subbase
Large-print
subbaseswitch
labels
Subbase and base installation
http://manualforhoneywellthermostat.com