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CA8900 Z-Wave
®
Thermostat Installation Guide
Part Two: Installing Guide
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,
1 – Location of Thermostat
Good
5ft.
(1.5m)
Tools Needed
#1 Phillips screwdriver (small) •
Drill with 3/16-in. (4.8mm) bit•
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.•
IMPORTANT : LABEL ALL
WIRES BEFORE DISCONNECT-
ING 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 loos-
ened. Note the letters printed near the terminals.
2 – Label Wires from Old Unit
B
G
W
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.
3 – Remove Old Unit
Attach labels (enclosed) to each wire for identifica-2.
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
standard.
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.
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.
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.•
WARNING–Risk of Fire or Electric Shock
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.