OM 897 / Page 3 of 12
Base Plate
Front Cover
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Introduction
The T9000 Wireless Temperature Control is a two-
part wireless thermostat system designed to provide
precision temperature control without the installation
labor and expense of wiring. Powered by AA batteries, the
thermostat can operate continuously for approximately
18 months, and can be mounted in any suitable location
that will provide good temperature control. A large
LCD display (Figure 1) provides the user with current
room temperature, set point temperature, time, program
interval, and other system status information. In hotel
applications, programming, clock set up buttons and
associated display information are typically not displayed.
The second part of the T9000 system is called a Remote
Control Node or “RCN”. An RCN interfaces with specific
desired HVAC equipment, and communicates with its
thermostat using unlicensed 900 MHz, radio frequency
energy. At the time of installation, the T9000 thermostat
is linked to one or more RCN controls. The thermostat
and RCN that have been linked will not interfere with, or
be affected by, any other thermostat or RCN in adjacent
rooms, apartments, or neighboring homes.
Figure 1. T9000 Front View
Batteries
Installing/Changing
A low battery icon
will light on the thermostat
display when the batteries are within approximately
one week of being exhausted. The T9000 is designed
to use standard AA size, 1.5-volt alkaline batteries. If
the batteries become completely depleted, the heating/
cooling system will go to the “Off” state.
Replacing Batteries
To open the thermostat, use both hands and press the
two push-tabs on the bottom of the thermostat housing
with your thumbs while pulling the front of the thermostat
away from the base (Figure 2)
Figure 2. Opening Thermostat
The T9000 operates with either two or four AA
batteries. Four (4) batteries double the time between
battery changes (the average user can expect 1 to 1.5
years of battery life). Batteries are paired, one set on top
of the other (see Figure 3).
Figure 3. Battery Location
Circuit Board
Set A
Set A
Set B
Set B
Thermostat will operate on either Set A,
Set B or both. When changing, replace with all
new batteries. Never use a mix of old and new.
Battery orientation is critical.
Thermostat opened back
Note:
Do not mix old and new batteries. When
batteries are changed, replace them all at the same
time.
Programmed data for heating, cooling and time of
day will be lost when batteries are completely removed
or depleted and will have to be re-enterend along with
resetting the clock. To avoid this, batteries can be replaced
one set at a time before they are depleted. However, after
the first set is replaced, immediately replace the second
set with new batteries.
