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CA8900 Z-Wave
®
Thermostat Installation Guide
When the batteries are low, the battery
icon on the display panel will flash. The two
AA batteries in the unit need to be replaced.
These batteries are not for operation, but
provide battery backup for your settings. The
thermostat requires 24VAC for operation, and
Low Battery Warning
To join a Z-Wave network, set the Z-Wave controller
to INCLUDE mode, then press and release the BIND
button on the CA8900 thermostat. Follow instructions
provided with your controller. You would also use the
BIND button when excluding from a Z-Wave network.
Whether the temperature display panel displays in
Fahrenheit or Celsius depends on the position of the
F/C jumper. The F/C jumper is at the top right of the
PCB, called Jumper 4 in the diagram below.
With the jumper removed, the display is in Fahren-•
heit (the default setting).
With the jumper placed on both pins, the display is •
in Celsius (centigrade).
When the jumper is changed, you
must press the RESET button on the
front of the thermostat.
1
A
B
2
3
4
5
Celsius/Fahrenheit Jumper
JP5
JP3
JP4
JP1 JP2
Fahrenheit / Celsius
Indicator
Current Temperature
Display
SET Temperature
Display
If you have a heat pump with auxiliary heat and the
heat pump is not working or cannot keep up with heat
demand, you can use the auxiliary heat only.
Move the jumper from position 2B [heat pump] to
position 2A [Aux only].
A
B
2
Heat Pump/
Aux Only
JP5
JP3
JP4
JP1 JP2
Joining to a Z-Wave
®
Network
Displaying Fahrenheit or Celsius
the HVAC system will stop function if the thermostat
loses power.
Replace the batteries as soon as you see the flashing
battery icon. Press the RESET button after replacing
batteries.
Setting a Heat Pump’s AUX ONLY Mode