Trane CA8900 User Manual
MODEL CA8900 Z-Wave®
Digital Thermostat
Installation and User Instructions
Description and Features
The CA8900 is a digital thermostat that can be controlled wirelessly with Z-Wave controllers supporting
the Thermostat General V2 Device Class. The thermostat is compatible with all standard 24 VAC heating
and cooling systems, up to two-stage heat, one-stage
cool, and two-stage heat pump. The CA8900 operates
as a simple thermostat with buttons to set target temperatures for heat and cool modes. The Save Energy
button adds two more modes for target temperatures
to provide a single button set-back mode for easy operation. It can easily be retrofitted to existing systems
as part of a Z-wave control strategy.
The CA8900 Wireless Thermostat provides two-way
communication as part of a Z-Wave
it receives commands from the Central Controller
Unit, it sends back confirmation that the command
was received and implemented. Each module in a
Z-Wave network communicates with every other module, acting as a “repeater”
and routing your commands
to their destination by the most reliable pathway.
When Z-Wave devices (regardless of manufacturer)
are installed throughout the house, signals are automatically routed around obstacles or dead spots,
strengthening the network as more devices are added.
The Z-Wave icon shows on the lower right of the display panel, indicating that the thermostat is in contact
with the controller. If the icon is not present, communication has been lost. If this occurs, all remote HVAC
functions are shut off.
®
network. When
This thermostat can be used with all 24VAC heat-•
ing and cooling systems. It cannot be used with line
voltage systems.
The CA8900 is digital and your desired heat or cool •
temperatures can easily be set on the large screen
with the TEMP UP (+) and TEMP DOWN (-) buttons
on the front.
A minimum 4-minute off time protects heating and •
cooling systems from damage.
This thermostat uses a new technique called sequen-•
tial staging for more comfort with faster reaction to
requested temperature changes.
NOTE: When using a heat pump with auxiliary
heat, if the heat pump cannot keep up and/or is
defective, remove jumper from position 2B and put
jumper on position 2A. This will make the auxiliary
heat your only source of heat. Be sure to restore it
to PUMP when the pump is again operational, as
auxiliary heat is more expensive than pump heat.
For more information, see page 3.
This guide is in two parts:
Part One: Operating Guide • —
for the homeowner or end user.
Part Two Installing Guide • —
for the installer or technician.
CA8900 Z-Wave® Thermostat Installation Guide
Part One: Operating Guide
Operating the CA8900
To set the thermostat to control your heating system,
press the HEAT button so the word HEAT displays.
Press again to turn OFF. The word HEAT will flash
when the thermostat is calling for heat.
Press the TEMP UP and TEMP DOWN buttons to select
the desired temperature. The word TARGET will be
displayed with the temperature you are setting. (The
display will return to showing room temperature in 5
seconds.)
To set the thermostat to control your cooling system,
press the COOL button so the word COOL displays.
Press again to turn OFF. The word COOL will flash
when the thermostat is calling for cooling.
2
Slide the fan switch to • AUTO to automatically run
the system’s fan during heating and cooling.
Slide the fan switch to • ON to run the fan continu-
ously, even without heating and cooling.
Using the SAVE ENERGY Button
The NORMAL and SAVE ENERGY buttons allow you to
quickly switch from the NORMAL programmed target
temp to a pre-determined set-back temperature, called
the Save Energy temp.
When in HEAT mode:•
Press the a. SAVE ENERGY button. The words SAVE
and TARGET appear.
Press the b. TEMP UP or TEMP DOWN buttons to set
the SAVE ENERGY temperature for heating, or
you can accept the default temperature of 65°F.
After 5 seconds, the display shows the room
temperature and the words SAVE HEAT.
When in COOL mode:•
Press the a. SAVE ENERGY button. The words SAVE
and TARGET appear.
Press the b. TEMP UP or TEMP DOWN buttons to set
the SAVE ENERGY temperature for cooling, or
you can accept the default temperature of 80°F.
After 5 seconds, the display shows the room
temperature and the words COOL SAVE.
Press the NORMAL button to return to the programmed target heat or cool temperature, (depending on which mode you are in). You can press the
TEMP UP or TEMP DOWN buttons to change this target
temperature. After 5 seconds, the display shows room
temperature.
Providing a brighter solution.™
CA8900 Z-Wave® Thermostat Installation Guide
1
A
B
2
3
4
5
Celsius/Fahrenheit Jumper
JP5
JP3
JP4
JP1 JP2
Fahrenheit / Celsius
Indicator
Current Temperature
Display
SET Temperature
Display
A
B
2
Heat Pump/
Aux Only
JP5
JP3
JP4
JP1 JP2
Joining to a Z-Wave® Network
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.
Low Battery Warning
3
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
Displaying Fahrenheit or Celsius
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.
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
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].
Providing a brighter solution.™
CA8900 Z-Wave® Thermostat Installation Guide
Good
5ft.
(1.5m)
B
G
W
Part Two: Installing Guide
WARNING–Risk of Fire or Electric Shock
To avoid fire, shock, or death, and to prevent damage to the furnace, •
air conditioner, and thermostat, disconnect the power supply before
beginning work. This can be done at the circuit breaker, or at the
appliance.
Your thermostat is a precise instrument, handle it with care.•
Do not turn electricity back on until work is completed.•
Tools Needed
#1 Phillips screwdriver (small) •
Drill with 3/16-in. (4.8mm) bit•
4
Do not short (jumper) across electric terminals at control on •
furnace or air conditioner to test the system. This will damage the
thermostat and void your warranty.
All wiring must conform to local codes and ordinances.•
This thermostat is designed for use with 24 volt AC systems. The •
thermostat should be limited to a maximum of 1.0 amps; higher
amperage may cause damage to the thermostat.
1 – Location of Thermostat
Replacement installations—mount the new thermostat
in place of the old one.
New installations—follow the guidelines listed below.
Locate the thermostat on an inside wall, about 5 ft. •
(1.5m) above the floor, and in a room that is used
often.
Do not install it •
where there are
unusual heating
conditions, such
as: in direct
sunlight; near
a lamp, radio,
2 – Label Wires from Old Unit
IMPORTANT : LABEL ALL
WIRES BEFORE DISCONNECTING THEM!
Switch electricity to the furnace
and air conditioner OFF; then
proceed with the following steps.
Remove cover from old thermostat. Most are snap-1.
on types and simply pull off. Some have locking
screws on the side or front. These must be loosened. Note the letters printed near the terminals.
television, radiator register, or fireplace; near hot
water pipes in a wall; near a stove on the other side
of a wall.
Do not locate in unusual cooling conditions, such •
as: on a wall separating an unheated room; or in a
draft from a stairwell, door, or window.
Do not locate in a damp area. This can lead to corro-•
sion that will shorten thermostat life.
Do not locate where air circulation is poor, such as: •
in a corner or an alcove; or behind an open door.
Do not install the unit until all construction work •
and painting has been completed.
This thermostat does not require leveling.•
Attach labels (enclosed) to each wire for identifica-2.
tion.
NOTE: Read instructions carefully before removing any wiring from existing thermostat. Wires
must be labeled before they are removed. THERE
IS NO STANDARD COLOR CODE. When removing wires from their terminals, ignore the color of
the wires since these may not comply with any
standard.
3 – Remove Old Unit
Label the wires one at a time. You must label all the 1.
wires before you proceed.
With all wires labeled, remove them from the old 2.
unit.
NOTE: Make sure the wires do not fall back inside the wall. You can wind them around a pencil
to keep them from falling.
Loosen all screws on the old thermostat and re-3.
move it from the wall.
Fill wall opening with non-combustible insulation 4.
to prevent drafts.
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