Wiring - Honeywell T8524 Deluxe Product Data

T8524 DELUXE ELECTRONIC THERMOSTAT
NO
2. Use a pencil to mark the mounting holes. See Fig. 3.
3. Remove the wallplate from the wall and drill two 3/16
inch holes in the wall (if drywall) as marked. For firmer
material such as plaster or wood, drill two 7/32 inch
holes. Gently tap anchors (provided) into the drilled
holes until flush with the wall
4. Position the wallplate over the holes, pulling wires
through the wiring opening.
5. Loosely insert the mounting screws into the holes.
6. Tighten mounting screws.
Standard Alternate
Terminal Terminal
Designations Designations
B —
C a
B , C, X1, X2
G F
O R
OT, OT —
R V
RC —
W1 H1, R3
W2 H2, R4, W3, Y
Y1 C1, M, Y
Y2 C2, M, Y
a Some OEM models label the terminal for transformer common B.
68-0202
NO
Fig. 2. Typical location of thermostat.
Table 3. Terminal Designations and Descriptions.
Typical Connection
Heating damper or changeover valve
Common
Fan relay
Cool damper or changeover valve
Outdoor temperature sensor (C7089B)
24V system or heating transformer
24V cooling transformer
Stage 1 heating relay
Stage 2 heating relay
Stage 1 compressor contactor
Satge 2 compressor contactor
4
YES
NO
5 FEET
[1.5 METERS]

WIRING

All wiring must comply with local electrical codes and
ordinances. Follow equipment manufacturer wiring
instructions when available. Refer to Fig. 13 through 18 for
typical hookups. A letter code is located near each terminal
for identification. Refer to Table 3 for terminal designations.
Function
Output
Input
Output
Output
Input
Input
Input
Output
Output
Output
Output
M10106
Terminal Type
24V powered contact
24V powered contact
24V powered contact
—
—
—
24V powered contact
24V powered contact
24V powered contact
24V powered contact