Venstar T1050 Manual de usuario

Venstar Inc. 08/07

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

Electric Cooling & 2 Stage Gas Heating, Heat Pump, Electric or Hydronic Heat.

Thermostat

residential

T1050

HEAT

COOL HEAT

PUMP

PROGRAMMABLE

5+2 Day

PROGRAMMABLE

5+2 Day

up to

& 2-cool

up to

& 2-cool

2-heat

THERMOSTAT

Control up to 2 heat & 2 Cool Stages

4 Settings Per Day

Self-prompting programming

Auto changeover

Separate weekday, Saturday

& Sunday programming

Digital

Back-Lit display

One For All Works with

Virtually All Equipment

5 minute Built-In

Compressor Protection

Non-Volatile memory

Dual setpoint with

adjustable deadband

Keypad lockout

‘O’ or ‘B’ Terminal

Display either F or C

INSTALLATION

INSTRUCTIONS

INSTALLATION

INSTRUCTIONS

Table Of Contents

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.

P/N T1050

Venstar Inc. 08/07

Page 1

Step #1: Preparation

Step #2: Remove & Replace

Old Thermostat

Step #3: Wire Connections

Step #4: Test Operation

Trouble Shooting

CAUTION Follow Installation Instructions carefully.

DISCONNECT POWER TO THE HEATER -

AIR CONDITIONER BEFORE REMOVING

THE OLD THERMOSTAT AND INSTALLING

THE NEW THERMOSTAT.

WARNING

Sample Wiring Diagrams

Drill with 3/16

inch Drill Bit

(when not using

j-box)

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.

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, wall anchors, and instructions.

STEP #1

PREPARATION

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

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.

STEP #2

REMOVE & REPLACE OLD THERMOSTAT

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.

* C may not be used on all systems.

** O/b is used if your system is a Heat Pump.

Wire from the

old thermostat

terminal marked Function

In st al l on t he

new thermos tat

connector marked

G or F Fan G

Y1, Y or C Cooling Y1

W1, W or H Heating W1,O,B

W1,O,B**

PowerRh, R, M, Vr, A R

O/b

C *

Common

Rev. Valve

Y2 Y2

W2 W2

2nd Stage Cool

2nd Stage Heat

Page 4

RY1W2 W1

Sample Wiring DiagramsSample Wiring Diagrams

*If using first stage electric heat, this option must be

selected ON (see page 12, step 5 of Owner’s Manual).

Gas or Electric Heat

5 Wire, 1 Stage Cooling, 1 Stage Gas Heat Residential Gas or Electric Heat*,

Electric Cool, split systems & package

units

POWER

COMPRESSOR

GAS VALVE

STRIP HEAT

COMMON

FAN

Page 5

RY1W2 W1

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

POWER

COMPRESSOR

GAS VALVE

STRIP HEAT

FAN

*If using first stage electric heat, this option must be

selected ON (see page 12, step 5 of Owner’s Manual).

Page 6

RY1W2 W1

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*.

POWER

COMPRESSOR

2nd STAGE

COOLING

COMMON

FAN

GAS VALVE

STRIP HEAT

*If using first stage electric heat, this option must be

selected ON (see page 12, step 5 of Owner’s Manual).

Page 7

RY1W2 W1

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*

POWER

COMPRESSOR

GAS VALVE

STRIP HEAT

COMMON

FAN

2nd STAGE

HEATING

*If using first stage electric heat, this option must be

selected ON (see page 12, step 5 of Owner’s Manual).

Page 8

RY1W2 W1

Commercial Gas or Electric Heat *,

Electric Cool, split systems & package units

including Commercial Heat Pumps **

Sample Wiring Diagrams

Gas or Electric Heat

7 Wire, 2 Stage Cooling, 2 Stage Heat

selected ON (see page 12, step 5 of Owner’s Manual).

** Commercial heat pumps do not have the heat pump turned

ON in advanced setup (see page 11, step 3 of Owner’s Manual).

If using first stage electric heat, this option must be

POWER

COMPRESSOR

2nd STAGE

COOLING

FAN

2nd STAGE

HEATING

COMMON

GAS VALVE

STRIP HEAT

Page 9

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