WIRE THERMOSTAT TO SYSTEM
For best electrical connection, use solid 18 gauge wire. If you must use stranded wire, tin the wires with solder to insure a good electrical connection.
1.Strip wires back 1⁄4”.
2.Using
3.Tighten terminal block connector screw.
4.Repeat steps 2 and 3 for each wire.
NOTE
Some applications may require that the fan be disabled in the Emergency Mode. Refer to System Function Table.
Insert stripped wires into terminal blocks,
then tighten terminal screws.
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| Aux. Light |
Emer. Heat |
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| 2 |
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| O 1 F F | |
Light |
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W7 | W R | L | C |
G |
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See | O |
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System | Y |
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B |
| Anticipation | |
Function |
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Table |
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| Selection |
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| Switches | |
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Pull wires through this opening Setpoint switch (without knob)
Figure 3. Thermostat base with typical wiring
!CAUTION
To prevent electrical shock and/or equipment damage, disconnect electrical power to system, at main fuse or circuit breaker, until installation is complete.
NOTE
This typical wiring diagram shows only the terminal iden- tification and wiring hookup. Always refer to wiring instruc- tions provided by equipment manufacturer for system hookup.
All wiring should be installed in accordance with local and national codes and ordinances.
Thermostat
Control
Circuit
B O Y G W C
Malfunction
Light†
THERMOSTAT
L R
Reversing | Compressor | Auxiliary | ||
Heat | ||||
Valve* |
| Contactor | ||
| Relay | |||
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Reversing |
| Fan | ||
| Valve** |
| Relay |
SYSTEM
Malfunction
Switch
| Hot |
24 VAC | 120 VAC |
Neutral
TRANSFORMER
*Reversing valve is energized when the System Switch is in the HEAT position
**Reversing valve is energized when the System Switch is in the COOL position
† Emergency light shown wired to malfunction circuit
Figure 4. Typical wiring diagram
ATTACH SETPOINT KNOB AND COVER
1.After thermostat base is mounted on wall, remove cardboard insert from setpoint switch.
2.Carefully press setpoint knob onto setpoint switch (see
fig. 5).
Setpoint
Knob Setpoint
Switch
3.Carefully snap cover onto thermostat base. Refer to the OPERATION section for instructions on setting the thermostat for desired operation.
G |
O
Y
B
455055 | 60 | 62 | 64 |
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40 |
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| 65 | ||
90 |
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| 66 | |
88 |
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| 67 |
86 |
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| 68 |
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| 69 | |
84 |
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83 |
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| 70 |
82 |
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| 71 |
81 | 80 |
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| 72 |
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| 74 | ||
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| 79 | 78 |
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| 73 |
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| 75 | |||
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| 7776 |
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G |
O
Y
B
455055 | |||
40 |
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90 |
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88 |
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86 |
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84 |
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83 |
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82 |
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81 | 80 | 79 |
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| 78 | ||
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60 | 62 | 64 |
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| 65 | |
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| 66 |
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| 67 |
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| 68 |
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| 69 |
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| 70 |
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| 71 |
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| 72 |
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| 73 |
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| 74 | |
7776 |
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| 75 |
EMER |
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| AUX |
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| G |
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| O |
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| Y |
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| B |
50 | 60 | 70 |
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| 80 |
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| 90 | ||
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455055 | |||
40 |
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90 |
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88 |
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86 |
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84 |
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83 |
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82 |
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81 | 80 | 79 |
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| 78 | ||
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60 | 62 | 64 |
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| 65 | ||
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| 66 |
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| 67 |
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| 68 |
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| 69 |
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| 70 |
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| 71 |
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| 72 |
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| 73 |
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| 74 | |
7776 |
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| 75 |
A
B
C