Aprilaire 8336 Manuale Utente

• Multi Stage heating and cooling control.

• Zone system compatible as a master thermostat.

• Multi-Colored LED indicators for system status.

• Low battery indicator.

• Fahrenheit/Celsius display option.

• Adjustable from 45°F (4°C) to 90°F (32°C).

• Accuracy within ± 1 degree.

• Adjustable temperature differential: 1-3 degrees F.

• Automatic heating shutdown if temperature exceeds 90°F (32°C).

1. Turn off power to heating and cooling system.

2. Remove cover of old thermostat to expose wires. 

Do not disconnect wires. (Fig. 1)

3. Label wires per Table 1.

R, V-VR or VR-R 

R

24 VAC, Return

Y, Y1 or M

Y

Stage 1 Cooling/Heating
Circuit

O or R

O

Reversing Valve,
(Cooling Mode)

B

B

Reversing Valve
(Heating Mode)

F or G

G

Fan control relay

Y2

Y2

2nd Stage Cooling
Circuit

W1 or W2 or W-U

W2

2nd Stage Heating
Control

L or X

L

System Monitor LED

E

E

Emergency Heating
Circuit

C, X or B

C

24 VAC, Transformer
Common Side

*NOTE: This thermostat requires a 24V common wire for proper operation.

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