Venstar T2700 Manuel utilisateur

Venstar Inc. 08/07

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 2-heat

& 2-cool

NON-

Digital

Thermostat

PROGRAMMABLE

up to 2-heat

& 2-cool

NON-

THERMOSTAT

T2700

commercial

Control up to 3 Heat &

2 Cool Stages

3 Configurable Outputs

Legends

Aux Heat Indicator

Dry Contact Equipped

Soft Start

Backlit Display & Button

Set Point Limiting

Remote Sensor Ready

Outdoor Sensor Ready

Accepts EZ Programmer

Accepts Optional Humidity

Module: Controls Humidification

and Dehumidification

Accepts Optional IR

Remote Control

Accepts Comfort Call

Phone Control Acessory

INSTALLATION

INSTRUCTIONS

INSTALLATION

INSTRUCTIONS

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 T2700

4Z95

CAUTION

MISC1 MISC1

Preparation

Remove & Replace the

Old Thermostat

Configuring the MISC

Outputs

Sample Wiring

Diagrams

Calibrating the

Thermostat Sensors

Test Operation

TroubleShooting

Page iii

Table of Contents

Wire Connections

Page 1.1

SECTION 1

Preparation

Assemble tools

Flat Blade

Screwdriver

Wire cutter

& Stripper

Make sure your Heater/Air Conditioner is working

properly before beginning installation of the

thermostat.

Carefully unpack the thermostat. Save the screws,

bracket, and instructions.

Turn off the power to the Heating/Air Conditioning

system at the main fuse panel. Most residential

systems have a separate breaker for disconnecting

power to the furnace.

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.

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

Page 2.1

SECTION 2

Remove & Replace the Old Thermostat

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.

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

AUTO

I2:00

HEAT

COOL

Page 3.1

Section 3 Contents:

Configuring the Jumpers........3.2

Explanation of Jumper

Settings..................................3.3

SECTION 3

Configuring the MISC Outputs

Page 3.2

Configuring the Jumpers

For additional flexibility, your thermostat has three configurable

outputs. These outputs are designed to have different functions

depending on how the jumpers are set (below).

Each output, labeled MISC1, MISC2, and MISC3 may be set for one

of the four choices available.

In the diagram below, the MISC3 jumper has been set for HUM

(humidification) operation, the MISC2 jumper has been set for DEHUM

(dehumidification) operation, and the MISC1 jumper has been set for

Y2 (second stage cooling) operation.

NEVER PUT MORE THAN

ONE JUMPER ON THE SAME

MISC JUMPER BLOCK!

DOING SO MAY DAMAGE

YOUR THERMOSTAT AND

VOID THE WARRANTY.

HUM

DEHUM

MISC3 MISC2 MISC1

(MISC1

ONLY)

CAUTION

GAS

ELEC

GAS

(FAN)

MISC2

MISC1

RS2

MISC3

RSGND

RS+5

HUM

DEHUM

MISC3 MISC2 MISC1

(MISC1

ONLY)

INSTALL HUMIDITY

MODULE WITH SENSING

ELEMENT OUTWARD

HUM

NO HUM

CK1

CKGND

RS1

MISC1 MISC1

Page 3.3

HUMIDIFICATION OPERATION - SECTION 8 of the Owner’s Manual

If your HVAC unit is equipped with a humidification system and the Humidity

Module (sold separately) has been installed, the thermostat will provide power

to the MISC1, MISC2, or MISC3 terminal of the thermostat when the humidity in

the home falls below the humidity setpoint you have chosen. The value for this

setpoint ranges from 0% to 60%. If no humidity is desired or if a humidification

system has not been installed, set the value to OFF.

DEHUM JUMPER SETTING

HUM JUMPER SETTING

If the jumper for MISC1, MISC2, or MISC3 is set to HUM,

terminal on the backplate will control a humidification system.

the corresponding MISC screw

Explanation of Jumper Settings

If the jumper for MISC1, MISC2, or MISC3 is set to DEHUM,

terminal on the backplate will be connected to the dehumidification terminal of a furnace board.

NOTE: Not all furnaces have a dehumidification terminal.

the corresponding MISC screw

DEHUMIDIFICATION OPERATION - SECTION 9 of the Owner’s Manual

If your HVAC unit is equipped with a dehumidification system the thermostat will

operate in one of two ways.

1) Normally Closed (NC): The thermostat will de-energize the MISC1, MISC2,

or MISC3 terminal of the thermostat (this MISC terminal is connected to the

DEHUM terminal on your furnace) to allow the fan to run in low speed when

the humidity in the home is above the dehumidify setpoint you have chosen

and there is a call for 1st stage cooling.

2) Normally Open (NO): The thermostat will energize the MISC1, MISC2, or

MISC3 terminal of the thermostat (this MISC terminal is connected to the

DEHUM terminal on your furnace) to allow the fan to run in low speed when

the humidity in the home is above the dehumidify setpoint you have chosen

and there is a call for 1st stage cooling.

Page 3.4

Y2 JUMPER SETTING

If the jumper for MISC1 is set to Y2 the

second stage of cooling.

MISC1 screw terminal on the backplate will control a

Y2 OPERATION - SECTION 12 of the Owner’s Manual

Explanation of Jumper Settings (continued)

The 2nd Stage of heat or cool is

(A) The 1st Stage has been on for the two minutes.

(B) The temperature spread from the setpoint is equal to or greater

than: the setpoint

12.5 of the Owner’s Manual), plus two degrees.

turned on when:

plus the 1st stage deadband (step #19, page

And

Cool

Setpoint

DeadbandDeadband

db 1 db 2

(adj. 0-10 )(adj. 1-6 )

1st Stage

turn on

2nd Stage

turn on

Cooling

TEMPERATURE INCREASE

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