Johnson Controls GLAS Manuale utente

Preliminary - This is information may change

GLAS

Installation Instructions

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Support

If at any point you need assistance, we’re here to help.

Visit glas.johnsoncontrol.com/support for how-to videos and frequently asked questions.

Can’t nd what you’re looking for? Give us a call at 1-833-297-4527(GLAS) and our techni-

cal team can walk you through it.

Before you start, download the GLAS app for easy installation.

Google Play and the Google Play Logo are marks and/or registered marks of Google LLC. Apple, the Apple Logo and App Store are

marks and/or registered marks of Apple Inc.

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Included in box

GLAS Thermostat 4 Screws

Wall Plate 4 Drywall Anchors

4 to 5 Wire Adapter Quick Start Guide

Tools required

Screwdriver

Drill

Level

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Compatibility

GLAS is compatible with most 24 VAC heating and cooling systems.

Use the compatibility checker to ensure your system will work with GLAS by going to

glas.johnsoncontrols.com/compatibilitychecker.

Heating One or two stages

Cooling One or two stages

Heat Pump One or two stages with one-or-two stage auxiliary heat

Fan Single-speed fan

Auxiliary Humidier, dehumidier, or ventilator (including HRV or ERV)

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Terminal descriptions

Note: If you have only one R wire, connect to RC.

Note: If you are replacing an existing thermostat, remove any jumper wires between R

and RH or RC and RH.

YFirst stage of cooling or rst stage heat pump

Y2 Second stage of cooling command or second stage heat pump

WFirst stage of conventional heating or rst stage auxiliary heat for heat pump

systems

W2 Second stage of conventional heating or second stage of auxiliary heat for heat

pump system

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Terminal descriptions

GFan

O/B Heat pump reversing valve (supports both O type and B type)

AUX Auxiliary - humidier, dehumidier, or ventilator

R 24 VAC Cool

Rh 24 VAC Hot

C24 VAC Common

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

IMPORTANT: If your thermostat is built into the wall and connected

to thick wires with wire nuts, or if it is labeled 110, 120, or 240 volts,

you have a high voltage system that is not compatible with the GLAS

Thermostat. Do not connect your thermostat to these high voltage wires.

GLAS is only compatible with 24VAC systems.

WARNING: Risk of Electric Shock.

Disconnect the power supply before making electrical connections.

Contact with components carrying hazardous voltage can cause electric

shock and may result in severe personal injury or death. If you have any

doubts about properly installing the device, please contact a professional

installer.

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Turn o system power

1. Turn o the power to your heating or cooling system at the HVAC unit

electrical switch or the breaker box for the building to avoid electrocution or shock.

2. If you want to check your system power, adjust the temperature on your current

thermostat enough that the system switches into heating or cooling mode. If the system

does not power on in a few minutes, it is o.

IMPORTANT: Never work with live voltage.

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Check old wiring

3. If you are replacing an existing thermostat, remove the front plate of your old

thermostat and take a picture of the current wire colors and connections. This picture will

come in handy when connecting your new thermostat.

GLAS Smart Thermostat Installation Instructions

Preliminary - This is information may change

Connect optional 4 to 5 wire

adapter

Note: If you have a C-wire, skip to Step 8.

If you do not have a C-wire to power your

thermostat, use the included adapter to

provide power.

4. Remove the cover of your furnace or air

handling unit to access the control board.

5. In your HVAC equipment, disconnect any

R,G,Y, or Wwires that are currently

connected to the control board.

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