Trane CA8900 Tools Needed, Location of Thermostat, Label Wires from Old Unit, Remove Old Unit

CA8900 Z-Wave®Thermostat Installation Guide 4

Part Two: Installing Guide

WARNING–Risk of Fire or Electric Shock

• To avoid fire, shock, or death, and to prevent damage to the furnace,		• Do not short (jumper) across electric terminals at control on
	air conditioner, and thermostat, disconnect the power supply before	furnace or air conditioner to test the system. This will damage the
	beginning work. This can be done at the circuit breaker, or at the	thermostat and void your warranty.
	appliance.	• All wiring must conform to local codes and ordinances.
•	Your thermostat is a precise instrument, handle it with care.	• This thermostat is designed for use with 24 volt AC systems. The
•	Do not turn electricity back on until work is completed.	thermostat should be limited to a maximum of 1.0 amps; higher
		amperage may cause damage to the thermostat.

Tools Needed

•#1 Phillips screwdriver (small)

•Drill with 3/16-in. (4.8mm) bit

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	Good
where there are
unusual heating	5ft.
conditions, such
	(1.5m)
as: in direct
sunlight; near
a lamp, radio,

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.

2 – Label Wires from Old Unit

2. Attach labels (enclosed) to each wire for identifica-

IMPORTANT : LABEL ALL WIRES BEFORE DISCONNECT- ING THEM!

Switch electricity to the furnace and air conditioner OFF; then proceed with the following steps.

B
G	W

tion.

NOTE: Read instructions carefully before remov- ing any wiring from existing thermostat. Wires must be labeled before they are removed. THERE IS NO STANDARD COLOR CODE. When remov- ing wires from their terminals, ignore the color of the wires since these may not comply with any

1.Remove cover from old thermostat. Most are snap- on types and simply pull off. Some have locking screws on the side or front. These must be loos- ened. Note the letters printed near the terminals.

standard.

3 – Remove Old Unit

1.Label the wires one at a time. You must label all the wires before you proceed.

2.With all wires labeled, remove them from the old unit.

NOTE: Make sure the wires do not fall back in- side the wall. You can wind them around a pencil to keep them from falling.

3.Loosen all screws on the old thermostat and re- move it from the wall.

4.Fill wall opening with non-combustible insulation to prevent drafts.

Providing a brighter solution.™