Honeywell 63-2666-03 User Manual

T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT

63-2666—03

Fig. 5. Nine TR21 Sensors Providing a Temperature

Averaging Network for T7351 Thermostat.

Fig. 6. Mounting the Subbase.

Wiring

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment circuitry.

Disconnect power supply before installation.

IMPORTANT

All wiring must comply with local electrical codes and

ordinances.

NOTE: Maximum (and recommended) wire size is 18-

gauge (ø 1.02 mm). Do not use wire smaller than

22-gauge (ø 0.644 mm).

Follow equipment manufacturer wiring instructions when

available. Refer to the Wiring Diagram section for typical

hookups. A letter code is located near each terminal for

identification. Refer to Tables 3 for terminal designations.

1. Loosen subbase terminal screws and connect system

wires.

2. Securely tighten each terminal screw.

3. Push excess wire back into the hole in the wall.

4. Plug the hole with nonflammable insulation to prevent

drafts from affecting the thermostat.

M29257

TR21

SUBBASE

WIRES THROUGH WALL

WALL

ANCHORS

(2)

M19608

MOUNTING
HOLES

MOUNTING
SCREWS