Manual Venstar Install T2300FS Rev. 1

John Peil

THERMOSTAT T 7-Da 7-Day

Manual to turn the fan on in step 3. The fan should turn on and run continuously. NOTE: Most equipment has a time delay of 5 minutes between cool cycles. This feature is defeatable on the thermostat (see page 16, step 9 of Owner's Manual). Page 12

THERMOSTAT T 7-Da 7-Day - Venstar

instructions on page 15 of the Owner’s Manual to turn the fan on in step 3. The fan should turn on and run continuously. NOTE: Most equipment has a time delay of 5 minutes between cool cycles. This feature is defeatable on the thermostat (see page 16, step 9 of Owner's Manual). Page 12

Manual to turn the fan on in step 3. The fan should turn on and run continuously. NOTE: Most equipment has a time delay of 5 minutes between cool cycles. This feature is defeatable on the thermostat (see page 16, step 9 of Owner's Manual). Page 12

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Document DEVICE REPORTT2300FSManualInstallRev1
Digital Thermostat

residential
THERMOSTAT
T2300FS
7-Day
PROGRAMMABLE
up to 2-heat & 2-cool

HEAT COOL

HEAT PUMP

Control up to 2 Heat & 2 Cool Stages 7-Day Programmable 4 Settings/Day Auto Changeover 5 minute Built-In Compressor Protection Self-Prompting Programming with Copy Command Display Either F or C

Mounts Flush with the Wall Back-Lit display One For All Works with Virtually All Equipment Non-Volatile memory Holiday/Vacation Programming Keypad lockout Dual setpoint with Adjustable Deadband `O' or `B' Terminal Optional: Remote Sensor Ready Dry Contact Equipped

Use with most Air Conditioning & Heating Systems including: 1 or 2 Stage Electric Cooling & 2 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.

INSTALLATION INSTRUCTIONS

Venstar Inc. 08/07

Table Of Contents

Step #1: Preparation

2

Step #2: Remove & Replace

3

Old Thermostat

Step #3: Wire Connections

4

Step #4: Test Operation

12

Trouble Shooting

13

CAUTION

Follow Installation Instructions carefully.

DISCONNECT POWER TO THE HEATER AIR CONDITIONER BEFORE REMOVING THE OLD THERMOSTAT AND INSTALLING THE NEW THERMOSTAT.

WARNING

Venstar Inc. 08/07
P/N T2300FS

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.
Page 1

STEP #1

PREPARATION

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.

WALL

Assemble tools & recommended Junction Box. FLATSTAT

EXTENDS LESS THAN 3/8" FROM THE WALL.

FlatStat in Small J-Box

WALL

Flat Blade

Wire cutter

Screwdriver

& Stripper

.366"

Make sure your Heater/Air Conditioner is working properly before beginning installation of the thermostat.

Carefully unpack the thermostat. Save the screws, wall anchors, 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.
Page 2

STEP #2 REMOVE & REPLACE 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.
Remove the white plastic wire connector from the rear of the thermostat. Install wires as directed. Press the wired connector on the back of the thermostat.
Lift Connector straight up to remove.
For best operation, install the thermostat in a junction box that is free from drafts that originate inside the wall.
Page 3

STEP #3

WIRE CONNECTIONS

If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below, or the wiring diagrams that follow.

Wire from the old thermostat terminal marked

Function

Install on the new thermos tat connector marked

G or F Y1, Y or C W1, W or H Rh, R, M, Vr, A
C O/b

Fan Cooling Heating Power Common Rev. Valve

G Y1 W1,O,B R C * W1,O,B**

Y2

2nd Stage Cool

Y2

W2

2nd Stage Heat

W2

RS+5 RS RS G CK1 CK2

Remote Sensor +5vdc Remote Sensor Signal Remote Sensor Ground Dry Contact Switch 1 Dry Contact Switch 2

RS+5 RS GND CK1 GND

* C may not be used on all systems. ** O/B is used if your system is a Heat Pump.

Page 4

Sample Wiring Diagrams

Gas or Electric Heat

5 Wire, 1 Stage Cooling, 1 Stage Gas Heat

Residential Gas or Electric Heat*, Electric Cool, split systems & package units

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

C G YWR

POWER GAS VALVE
or STRIP HEAT COMPRESSOR
FAN COMMON
* If using first stage electric heat, this option must be selected ON (see page 16, step 6 of Owner's Manual).
Page 5

Sample Wiring Diagrams

Gas or Electric Heat

4 Wire, 1 Stage Cooling, 1 Stage Gas Heat

Residential Gas or Electric Heat*, Electric Cool, split systems & package units

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

GYWR

POWER GAS VALVE
or STRIP HEAT COMPRESSOR
FAN
* If using first stage electric heat, this option must be selected ON (see page 16, step 6 of Owner's Manual).
Page 6

Sample Wiring Diagrams

Gas or Electric Heat

6 Wire, 2 Stage Cooling, 1 Stage Gas Heat

Residential two stage cooling with Gas or Electric Heat*.

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

Y2 C G Y W R

POWER GAS VALVE
or STRIP HEAT COMPRESSOR
FAN COMMON 2nd STAGE COOLING
* If using first stage electric heat, this option must be selected ON (see page 16, step 6 of Owner's Manual).
Page 7

Sample Wiring Diagrams

Gas or Electric Heat

6 Wire, 1 Stage Cooling, 2 Stage Heat

Residential & commercial 1 Stage Cooling, with 2 Stage Gas or Electric Heat*

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

W2 C G Y W R

POWER GAS VALVE
or STRIP HEAT COMPRESSOR
FAN COMMON 2nd STAGE HEATING
* If using first stage electric heat, this option must be selected ON (see page 16, step 6 of Owner's Manual).
Page 8

Sample Wiring Diagrams

Gas or Electric Heat

7 Wire, 2 Stage Cooling, 2 Stage Heat

Commercial Gas or Electric Heat *, Electric Cool, split systems & package units including Commercial Heat Pumps **

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

Y2 W2 C G Y W R

POWER GAS VALVE
or STRIP HEAT COMPRESSOR
FAN
COMMON
2nd STAGE HEATING 2nd STAGE COOLING
* If using first stage electric heat, this option must be selected ON (see page 16, step 6 of Owner's Manual).
** Commercial heat pumps do not have the heat pump turned ON in advanced setup (see page 15, step 4 of Owner's Manual).
Page 9

Sample Wiring Diagrams
Heat Pump
5 Wire, 1 Stage Cooling, 1 Stage Heat-Heat Pump* with O or b reversing valve**. Residential Heat Pumps, split systems & package units, with no auxiliary heat.

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

C G Y O/b R

POWER REVERSING VALVE**
COMPRESSOR FAN
COMMON
* This option must be selected ON during advanced setup (see page 15, step 4 of Owner's Manual).
** This option must be selected O or b during advanced setup (see page 16, step 5 of Owner's Manual).
Page 10

Sample Wiring Diagrams
Heat Pump
6 Wire, 1 Stage Cooling, 2 Stage Heat-Heat Pump* with O or b reversing valve**. Residential Heat Pumps, split systems & package units, with auxiliary heat.

C G Y1 W1-O-B R

CK1 GND RS RS+5 W2 Y2

W2 C G Y O/b R

POWER
REVERSING VALVE**
COMPRESSOR
FAN
COMMON 2nd STAGE HEATING
* This option must be selected ON during advanced setup (see page 15, step 4 of Owner's Manual).
** This option must be selected O or b during advanced setup (see page 16, step 5 of Owner's Manual).
Page 11

STEP #4

TEST OPERATION

Turn the power on to the Heating/Air Conditioning system.

Press the MODE button repeatedly until the HEAT icon appears on the display. Press the UP or DOWN buttons until the set temperature is 10 degrees above room temperature. The HVAC unit should energize in the heating mode.
Press the MODE button repeatedly until the COOL icon appears on the display. Press the UP or DOWN buttons until the set temperature is 10 degrees below room temperature. The HVAC unit should energize in the cooling mode.
NOTE: Most equipment has a time delay of 5 minutes between cool cycles. This feature is defeatable on the thermostat (see page 16, step 9 of Owner's Manual).
Press the UP button until the set temperature is equal to the room temperature; cooling should deenergize. Follow the instructions on page 15 of the Owner's Manual to turn the fan on in step 3. The fan should turn on and run continuously.
Page 12

TROUBLESHOOTING
SYMPTOM: When using 4 wires (R, G, W, Y), the air conditioning equipment tries repeatedly to turn on, but cannot. At times the display dims or disappears.
CAUSE: There is not enough power available to "power share".
REMEDY: Connect a 250 ohm, 10 watt power resistor at the furnace as shown below.
RG W YC
TR300-10w
SYMPTOM: The air conditioning does not attempt to turn on.
CAUSE: The compressor timer lockout may prevent the air conditioner from turning on, for a period of time.
REMEDY: See page 16 of the Owner's Manual and configure step 9 to defeat the 5minute compressor lockout.
SYMPTOM: The display is blank. CAUSE: Lack of proper power. REMEDY: Make sure power is turned on to
the furnace and 24vac between R & W. If C is used, 24vac between R & C.
Page 13

TROUBLESHOOTING
SYMPTOM: When controlling a residential heat pump, and asking for cooling, the heat comes on.
CAUSE: Heat pump is not selected "ON" in the Advanced Setup.
REMEDY: See page 15 of the Owner's Manual and configure step 4 to enable heat pump operation.
SYMPTOM: When calling for cooling, both the heat and cool come on.
CAUSE: The thermostat is configured to control a heat pump and the HVAC system is a "conventional" (non-heat pump) system.
REMEDY: See page 15 of the Owner's Manual and set step 4 to OFF to enable gas electric operation.

4Z95

FlatStat

T2300FS

FCc Tested to Comply with FCC Standards

FOR HOME OR OFFICE USE

Page 14

P/N 88-641 Rev. 1


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