Peco TW205-206 Installation Instructions Manual page 5

USER OPERATION (TW205 ONLY)
The following operating instructions are only for the TW205 nonprogrammable thermostat.
Please refer to the "TW206 Owner's Manual" for the operating instructions for the TW206
programmable thermostat.
TW205 Display Reference
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System Mode Indicators. Displays whether the system is in heat, cool, auto, setback, or
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off. See "System Button Operation" section for information.
Fan Operation Indicators. See "Fan Button Operation" section for information.
2
Temperature Display. Current room temperature is shown during normal display.
3
Service Indicator. The wrench symbol is displayed when there is a temperature sensor
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error. It indicates there is an open or a short connection to the sensor. When this occurs, the
thermostat will disable all outputs and illuminate the wrench symbol. A service technician
should be called to determine the cause of the error.
Keypad Lockout Indicator.
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Low Battery Indicator.
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Saving Changes
As you navigate your thermostat, be aware of the thermostat's save and exit protocol:
• The thermostat automatically saves all the changes you make, as you make them.
• When you are in the SYSTEM or FAN menus:
o If you push a button that is not applicable to the current menu, all changes are saved
and the thermostat goes to the menu associated with the button that was pushed.
o If the thermostat is idle for fi ve seconds, the thermostat times out, saves all changes,
and returns to the thermostat's normal display.
or Button Operation
▲ ▼
The thermostat displays the current room temperature. Press ▲ to increase, or ▼ to
decrease, the desired room temperature (setpoint).
System Button Operation
Pressing SYS will light up the system mode options described below (if enabled by your
thermostat's installer in the Service Menu). Press SYS to scroll through the options. As
you scroll, the current option will be fl ashing. To select the fl ashing option, wait for the fi ve-
second timeout, which saves your option and returns you to the default display.
MENU DESCRIPTION
HEAT The thermostat operates as a Heating only thermostat.
COOL The thermostat operates as a Cooling only thermostat.
AUTO The thermostat automatically selects the appropriate Heat or Cool
mode depending upon the setpoint (desired temperature) and zone
temperature (actual temperature).
OFF Turns the system off by disabling all outputs on the RW205.
© COPYRIGHT 2009 PECO, INC. ALL RIGHTS RESERVED.
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5
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Aux
AUTO
OFF
HEAT
COOL
FAN
SETBACK
Auto ON
SETBACK Setback mode is an energy saving feature that minimizes the
heating and cooling when the room is not occupied. Setback mode
overrides the standard setpoints by telling the thermostat to instead
use the setback setpoints for heating and cooling. The setback
setpoint temperatures are factory default or installer-selected during
installation. During setback mode, when a demand for heating or
cooling exists, the fan will run at the lowest speed.
• Automatic setback mode: The TW205 thermostat can be used
with PECO SW205/206 wireless occupancy detection devices.
Setback mode is automatically controlled by those devices. For
more information, see the "SW205/206 Installation and Operating
Instructions".
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• Manual setback mode: Select SETBACK in the SYSTEM menu.
Setback temperature settings will remain in effect until you manually
turn off setback mode. Selecting HEAT, COOL, or AUTO in the SYSTEM
menu will turn off setback and resume user-selected settings.
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Fan Button Operation
Pressing FAN will light up the fan mode options described below (if enabled by your
thermostat's installer in the Service Menu). Press FAN to scroll through the options. As you
scroll, the current option will be fl ashing. To select the fl ashing option, wait for the fi ve-second
timeout, which saves your option and returns you to the thermostat's default display.
MENU DESCRIPTION
ON Hi High speed fan is on continuously, even if no demand for heating
or cooling exists.
ON M Medium speed fan is on continuously, even if no demand for heating
or cooling exists.
ON Lo Low speed fan is on continuously, even if no demand for heating
or cooling exists.
AUTO Hi High speed fan cycles with active demand for heating and cooling.
AUTO M Medium speed fan cycles with active demand for heating and
cooling.
AUTO Lo Low speed fan cycles with active demand for heating and cooling.
F/C Button Operation
Pressing the F/C button toggles the temperature display between Fahrenheit and Celsius.
Pressing the F/C button does not change the stored value in the Service Menu.
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