2 / 14
P/N 466-5519 • REV 0.01 • 24MAY19
Z-Wave Operation when Battery Powered
IMPORTANT:
If the thermostat is installed on a Z-Wave
network,
while it is battery powered
, it
does not work as a Z-Wave repeater.
24VAC Powered Operation
Powering the thermostat with 24VAC power
requires
both
the C wire (24VAC common wire - typically blue) and the R
wire (24VAC hot wire - typically Red). If the C wire is not
available, then batteries are required.
Note:
If the thermostat is powered from 24VAC, do not install
batteries!
Z-Wave Operation when 24VAC powered
If the thermostat is installed on a Z-Wave network
while it is
24VAC powered
, it operates as an always-on Z-Wave
repeater.
Installation Steps
1. Remove old thermostat
2. Install TBZ500 IS-ZW-TSTAT-500 (W for whit, B for
black)
3. Set up the thermostat for the HVAC system
4. Enroll on Z-Wave network
Remove old thermostat
1.
Turn off power to the HVAC system.
Usually at the
HVAC system or the circuit breaker panel.
2. Remove cover of old thermostat to expose the wiring
terminals.
x
Take a picture of the wiring terminals! This will help
with troubleshooting later if needed.
x
Mark the wires attached to the terminals with the
wiring labels included.
3. Use the terminal labels and not the wiring color to mark
the wires.
4. Remove the old thermostat base.
CAUTION:
Don’t let the wires slip into the wall.
Figure 1:
Thermostat Wiring
Note*:
The C wire (24V common) may not be present.
If C wire is not present, the thermostat must be powered by
batteries.
ATTENTION:
If the C wire is present, you can power,
DO NOT INSTALL BATTERIES!
Note:
Mark the wires according to the terminal markings. There
may be additional wires such as Y2, W2. If you have RC
and/or RH connections, see below. Other wires are not
used:
x
Wiring colors:
While the wiring terminals markings are
intended to match the wire color (
R=
Red
,
G=
Green
,
W=
White
,
Y=
Yellow
,
O=
Orange
), not all installations
were correctly installed this way. Be sure to follow the
terminal marking when marking the wires, even if the
wire color doesn’t match.
x
24VAC Power:
The thermostat requires the 24VAC C
(common) wire be connected to operate without
batteries. Otherwise 4 x AA batteries are required.
Note that the 24VAC C common wire (usually Blue) may
be present but not connect to 24VAC common at the
HVAC system end. Be sure to check for 24V across R
and C terminals if the thermostat does not power up
without batteries. If there is no C “common” wire,
batteries are required.
