Venstar T0140 Manual de usuario

Venstar Inc. 05/08

Digital

Thermostat

Digital

Thermostat

residential

T0140

THERMOSTAT

OWNER’S

MANUAL

OWNER’S

MANUAL

Use with most 1 or 2 Stage Heat Pump Heat and 1 stage Heat Pump Cool units

Stages: 2-Heat, 1-Cool

Battery or System Powered

Auxiliary Heat Indicator

Fahrenheit or Celsius

PROGRAMMABLE

NON-

PROGRAMMABLE

NON-

up to

& 1-cool

up to

& 1-cool

2-heat

HEAT

PUMP

HEAT

PUMP

Bi-Color LED (when system powered)

Page 2

Contents Page #

Remove Old Thermostat

Safety Warnings

Front Panel

Display

Normal Operation

Preparation

Battery Replacement

Warranty

Test Operation

Troubleshooting

Wire Connections

Fahrenheit or Celsius

Aux Heat

OWNER'S MANUAL

T0140

CAUTION Follow Installation Instructions carefully.

DISCONNECT POWER TO THE HEATER -

AIR CONDITIONER BEFORE REMOVING

THE OLD THERMOSTAT AND INSTALLING

THE NEW THERMOSTAT.

WARNING

Page 3

Safety Warnings

CAUTION

The two Alkaline “AA” batteries must be replaced at

least once every 12 months to ensure proper

operation. The “Low Battery” icon will appear on the

thermostat display when it is time to replace the

batteries. If the thermostat is connected to 24v power,

the batteries should still be installed, but are not

required.

When “Low Battery” is displayed the batteries must be

replaced immediately. The manufacturer cannot be

liable for improper operation of the thermostat if the

batteries are not immediately replaced.

Annual battery replacement is especially critical in

locations subject to freezing temperatures. The

thermostat will be unable to turn on the heating system

if the batteries are exhausted.

P/N T0140

OWNER'S MANUAL

T0140

Front Panel

Page 4

Emergency

Normal

Lockout

AUX HEAT

SWITCH

OWNER'S MANUAL

T0140

BATTERY

DOOR

COOLER &

WA R M E R

BUTTONS

MODE SWITCH

Cool, Off or Heat

On or Auto

FAN SWITCH

DISPLAY

BI-COLOR LED

Heat or Cool demand

indicator when system

powered: Red = Heat

Green = Cool

SET TEMP

HEAT

AUX

COOL

LOW

BATTERY

Page 5

Display

Indicates auxiliary heat is energized.

Desired set temperature indicator.

When this indicator is on, the large numbers represent

the desired room temperature. Pressing the

COOLER or WARMER button during normal operation

will cause the large numbers to switch from the current

room temperature to the desired set temperature.

Current room or set temperature.

Indicates battery life is low; it is recommended to

replace the batteries at this time.

OWNER'S MANUAL

T0140

Heat and Cool indicators.

In normal operation, Heat or Cool appears, depending

on the Mode Switch position. When heat or cool is

energized, the Heat or Cool indicator will flash. If the

thermostat is system powered the bi-color LED will

also illuminate (red for heating and green for cooling).

HEAT

Page 6

Normal Operation

Operation

Select Cool or Heat with the Mode Switch.

Normally leave the fan switched to Auto.

In Fan Auto, the fan will turn on only with a heat

or cool demand. When Fan On is selected, the

fan will run continuously.

Adjust the desired set temperature with the

COOLER or WARMER buttons.

OWNER'S MANUAL

T0140

On or Auto

FAN SWITCH

COOLER &

WA R M E R

BUTTONS

MODE SWITCH

Cool, Off or Heat

HEAT

Page 7

Aux Heat

Normal - Aux Heat is allowed to run, if necessary,

along with the heat pump to satisfy the

heat demand.

Lockout - Aux Heat will never turn on

regardless of the heat demand.

When the Aux Heat switch is in the Emergency position the

compressor will also be locked out during cooling operation.

AUX HEAT

SWITCH

OWNER'S MANUAL

T0140

Emergency - Disables all compressor

functions* and energizes only Aux

Heat to satisfy the heat demand.

HEAT

Page 8

Fahrenheit or Celsius

Operation

Select Off with the Mode Switch.

Press and hold the COOLER and WARMER

buttons at the same time until the temperature

is displayed in degrees Celsius.

Repeat this process to display the temperature

in degrees Fahrenheit.

OWNER'S MANUAL

T0140

COOLER &

WA R M E R

BUTTONS

MODE SWITCH

Cool, Off or Heat

Page 9

These tools will be required:

Flat Blade

Screwdriver

Wire cutter

& Stripper

Carefully unpack the thermostat.

Save the screws and instructions.

Proper installation of the thermostat will be

accomplished by following these step

by step instructions. If you are unsure

about any of these steps, call a qualified

technician for assistance.

Preparation

Make sure your Heat Pump is working

properly before beginning installation

of the thermostat.

OWNER'S MANUAL

T0140

Turn off the power to the Heat Pump

system at the main fuse panel.

HEAT

Remove the cover of the old thermostat.

If it does not come off easily check for

screws.

Loosen the screws holding the thermostat

base or subbase to the wall, and lift away.

Disconnect the wires from the old

thermostat. Tape the ends of the wires

as you disconnect them, and mark them

with the letter of the terminal for easy

reconnection to the new thermostat.

Keep the old thermostat for reference

purposes, until your new thermostat is

functioning properly.

Remove & Replace

Old Thermostat

Page 10

OWNER'S MANUAL

T0140

HEAT

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