24
Step 16: Set the jumpers on the back of your Thermostat
Step 9: Set the jumpers on the back of your Thermostat
The Accessory (ACC) wires are used to power devices such as humidifier or dehumidifier. If your
system does not have any ACC wires, you can leave the black jumper in either position.
If your system has two ACC wires with an RH
wire, set the jumpers as illustrated. This is the
default position.
If your system has two ACC wires without an RH
wire, set the jumpers as illustrated.
If your system has one ACC wire with an RH
wire, set the jumpers as illustrated.
If your system has one ACC wire without an RH
wire, set the jumpers as illustrated.
1 ACC wire
without
R
H
wire
1 ACC wire
with R
H
wire
2 ACC wires
without R
H
wire
2 ACC wires
with R
H
Wire
(Default position)
Note : If there is no ACC wire, the black jumper can be in
either position.
Jumper Position for Accessory & R
H
Wire
ACC wire
R
H
wire
Fig 24-A
