Venstar T2900 User manual
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
C
c
F
FOR HOME OR OFFICE USE
Tested to Comply
with FCC Standards
Thermostat T2900
4Z95
CAUTION
MISC3 MISC3
OK
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
14
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.
1
23
21
20
19
17
16
15
14
2
3
6
7
8
9
10
11
12
13
18
22
24
4
5
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
1
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
1
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
Mo
Setup
Setup
1
12:00
2
Am
Selecting the Heat or Cool Mode
Page 1.3
1
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).
Su
70
12:00
HEAT
68
Su
70
12:00
COOL
76
AUTO
Su
70
12:00
HEAT
COOL
76
68
Su
Program On
70
12:00
HEAT
COOL
76
68
OFF
Su
70
12:00
Pm
Pm
Pm
Pm
Pm
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.
1
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
Su
70
12:00
HEAT
COOL
76
68
Su
70
12:00
COOL
76
AUTO
Su
70
12:00
HEAT
COOL
76
68
FanOn
Pm
Pm
Pm
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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