Wiring - Honeywell T8511 Manual

T8501 AND T8511 DELUXE ELECTRONIC THERMOSTATS
NO
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 B, X, X1, X2
E K
G F
O R
O/B —
OT, OT —
R V
RC —
RH V
W —
W1 H1, R3
W2 H2, R4, W3, Y
X1 A1, A, C, L, X, Z
Y, Y1 C1, M, Y
L A, A1, X, Z
68-0162—1
NO
Fig. 2. Typical location of thermostat.
Table 3. Terminal Designations and Descriptions.
Typical Connection
Heating changeover valve or damper
Common
Emergency heat relay
Fan relay
Cooling changeover valve
Cooling/heating changeover valve or damper
Outdoor temperature sensor input for C7089B
24V system transformer
24V cooling transformer
24V heating transformer
Heating relay
Heating relay
Stage 2 heating relay or auxiliary heat relay
User defined Light Emitting Diodes (LEDs)
Compressor contactor
User defined Light Emitting Diodes (LEDs)
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 17 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
Output
Output
Input
Input
Input
Input
Output
Output
Output
Annunciation
Output
Annunciation
M10106
Terminal Type
24V powered contact
24V powered contact
24V powered contact
24V powered contact
24V powered contact
—
—
—
—
24V powered contact
24V powered contact
24V powered contact
—
24V powered contact
—