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SecureCom Smart Z-Wave Thermostat Installation Guide
Thermostat Power
The thermostat can be powered by either 24VAC from the HVAC system or from four (4) type AA
internal batteries .
DO NOT
use this thermostat for line voltage controls (120/240VAC) .
The C Wire
If the 24VAC common wire (usually blue) is present and is connected to 24VAC common at the
HVAC system end, the thermostat can be powered from the HVAC system and batteries are not
required . If there is no common wire, batteries are required .
24VAC Power
Powering the thermostat with 24VAC power
requires
both the 24VAC “C” common wire (typically
a blue wire) and the 24VAC ”R” return wire (typically a red wire) .
Battery Power
Powering the thermostat from batteries
does not
require a “C” wire connection .
DO NOT
install batteries if the thermostat is powered by 24VAC . They are not required for
backup .
If the thermostat is powered by batteries, the thermostat will operate for approximately (2)
two years on four (4) AA Alkaline batteries depending on the frequency of user operations and
backlight operation . Always use Alkaline batteries and replace in complete sets of four (4) at
a time .
Z-Wave Operation when Battery Powered
IMPORTANT: If the thermostat is installed on a Z-Wave network, while it is battery powered,
it will NOT work as a Z-Wave repeater.
CAUTION:
Do not install batteries and temporarily power the thermostat from 24VAC to include
onto a Z-Wave network . Shortened battery life may occur when 24VAC power is removed .