Venstar T2900 Manuale utente

Venstar Inc. 04/08

Meets Commercial California Title 24

Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage

Electric Cooling & 3 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.

HEAT

COOL HEAT

PUMP

Digital

Thermostat

PROGRAMMABLE

up to 3-heat

& 2-cool

7-DAY

Digital

Thermostat

PROGRAMMABLE

up to 3-heat

& 2-cool

7-DAY

THERMOSTAT

T2900

commercial

Control up to 3 Heat &

2 Cool Stages

3 Configurable Outputs

Timers & Deadbands

Backlit Display & Button

Legends

Aux Heat Indicator

Dry Contact Equipped

Accepts Comfort Call

Phone Control Accessory

Adjustable 2nd & 3rd Stage

Outdoor Sensor Ready with

High/Low Readouts for the Day

Set Point Limiting

Accepts EZ Programmer

Economizer Control

Preoccupancy Fan Purge

Remote Averaging

Programmable Output

Light Activation Equipped

Accepts Optional Humidity Module:

Controls Humidification,

Dehumidification and Reheat

Accepts Optional IR Remote Control

OWNER’S

MANUAL

OWNER’S

MANUAL

Page i

NOTE: Due to variations in environmental conditions, it is not

always possible to achieve the desired humidification or

dehumidification setpoint.

This device complies with Part 15 of the FCC Rules. Operation is

subject to the following two conditions: (1) this device may not cause

harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Follow the Installation Instructions before proceeding.

Set the thermostat mode to “OFF” prior to changing

settings in setup or restoring Factory Defaults.

NEVER PUT MORE THAN ONE

JUMPER ON THE SAME MISC

JUMPER BLOCK!

THIS MAY DAMAGE YOUR

THERMOSTAT AND VOID

YOUR WARRANTY.

CAUTION

FOR HOME OR OFFICE USE

Tested to Comply

with FCC Standards

Thermostat T2900

4Z95

CAUTION

MISC3 MISC3

Page ii

Page 14.1

Section 14 Contents:

Adjusting the Heat/Cool

Differential..............................14.2

Adjusting the Cycles

Per Hour..................................14.3

Adjusting the Deadband..........14.4

Adjusting the Minutes of

Run-Time Before the

Next Stage...............................14.6

Selecting 2nd Stage Turn

Off Temperature.....................14.7

SECTION 14

Timers and Deadbands

The Table of Contents divides the thermostat features into sections

making it easier to quickly find information.

In addition, this manual also has an Index to help you find any information

regarding this thermostat quickly.

How to Use This Manual

Header shows section #

and title of section

Section contents

Visible section tab

on the side of the

page

Section and page #

The first page of each section contains a more detailed Table of Contents

for each section, such as the example page shown below.

Glossary of Terms

Page iii

Auto-Changeover: A mode in which the thermostat will turn on

the heating or cooling based on room temperature demand.

Configurable Output Jumper: Using jumpers on the thermostat

you can configure the MISC1, MISC2, and MISC3 terminals to

control humidification, dehumidification, 2nd stage cooling, 3rd

stage heating, and a programmable output.

Cool Setpoint: The warmest temperature that the space should

rise to before cooling is turned on (without regards to

deadband).

Deadband: The number of degrees the thermostat will wait, once

setpoint has been reached, before energizing heating or cooling.

Dehumidify: To reduce the amount of moisture in the air.

Differential: The forced temperature difference between the

heat setpoint and the cool setpoint.

Heat Setpoint: The coolest temperature that the space should

drop to before heating is turned on (without regards to

deadband).

Humidify: To increase the amount of moisture in the air.

Icon: The word or symbol that appears on the thermostat

display.

Mode: The current operating condition of the thermostat (i.e. Off,

Heat, Cool, Auto, Program On).

Non-Programmable Thermostat: A thermostat that does not

have the capability of running the Time Period Programming.

Programmable Thermostat: A thermostat that has the capability

of running the Time Period Programming.

Reheat: Running the cooling and 2nd stage strip heaters at the

same time in order to dehumidify the air without cooling down

the room temperature.

Temperature Swing: Same as Deadband.

Time Period Programming: A program that allows the

thermostat to automatically adjust the heat setpoint and/or the

cool setpoint based on the time of day.

Quick Start

Getting to Know Your

Thermostat

Viewing Equipment

Run-Times

Electric Heat and

Heat Pump Operation

Timers and Deadbands

Using the

Programmable Output

Programming Remote

Sensor Operation

Programming the Dry Contact

Light Activated

Operation

Table of Contents

Page iv

Programming Holiday Mode

Configuring the MISC

Outputs

Factory Defaults, Calibration,

and Sensors

Accessories

Advanced Setup Table

Energy Save

Operation

Programming Run-Time

Alerts

Setting Clock and Day

Basic Operation

Viewing Outdoor and Remote

Temperature and Humidity

Programming the

Daily Schedule

Programming the

Fan Operation

Thermostat Display

Options

Humidification

Dehumidification

Page 1.1

Section 1 Contents:

Setting the Clock and Day...........1.2

Selecting the Heat or Cool

Mode............................................1.3

Selecting Your Desired

Temperature................................1.4

Using the Fan Button...................1.4

Note: Following the instructions in this section will allow you to

operate your thermostat using the factory default settings. These

settings are depicted in the illustrations throughout this manual.

SECTION 1

Quick Start

Buttons.

To adjust the

Clock or Day use

Press the MODE and

HUMIDITY buttons

at the same time

Press the MODE

and HUMIDITY

buttons at the

same time to

return to normal

operation.

Setting the Clock

During Setup &

Programming:

Pressing the UP or DOWN

buttons will modify the flashing

selection.

Setting the Day

Press

MODE

Page 1.2

To adjust the time by

hours press and hold

the FAN button while

pressing the UP or

DOWN buttons.

HUMIDITY

MODE

SET CLOCK

HUMIDITY

MODE

SET CLOCK

Setup

12:00

Selecting the Heat or Cool Mode

Page 1.3

Press

MODE

Press

MODE

Press

MODE

Press

MODE

The HEAT setting indicates the

temperature the room has to

reach before the furnace will

turn on to heat the room.

Heating Only

The COOL setting indicates the

temperature the room has to

reach before the air conditioner

will turn on to cool the room.

Cooling Only

OFF indicates both heating

and air conditioning

systems are turned off.

Off

AUTO will automatically select

heat or cool based on room

temperature demand.

Heating or Cooling

Select Mode by Pressing the MODE Button

Time Schedule for

Heating or Cooling

The Program On setting will

activate the time period

programming for the cooling

or heating setpoint ONLY

(Morning, Day, Evening

& Night Periods).

12:00

HEAT

12:00

COOL

AUTO

12:00

HEAT

COOL

Program On

12:00

HEAT

COOL

OFF

12:00

occupied

Page 1.4

Selecting Your Desired Temperature

(adjusting the setpoints)

Fan On indicates constant fan operation.

If Fan On is selected the fan will run

continuously at all times, except in Off,

and will only run if there is a heating or

cooling demand in Unoccupied periods.

Pressing the FAN button toggles this

feature on or off.

AUTO OR PROGRAM MODE

buttons.

Adjust the desired

set temperature with the

HEAT OR COOL MODE

Pressing the UP or DOWN buttons in Heat or Cool mode will

adjust only the heat or cool set temperature.

buttons.

Adjust the desired

set temperature with the

Using the Fan Button

Press

FAN

AUTO

12:00

HEAT

COOL

12:00

COOL

AUTO

12:00

HEAT

COOL

FanOn

Pressing the UP or DOWN buttons in Auto or Program

mode will adjust both the heat and cool set temperatures

simultaneously.

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