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1

Identify Wiring

The objective of this step is to identify how your thermostat wiring is connected to your 
furnace, air conditioner, or heat pump. This will also determine what type of control 
scheme your system uses.

A) Turn off all power to your furnace, air conditioner, or heat pump. 

CAUTION: 

Verify that all power has been turned off. Failure to turn power 

off may result in personal injury, electric shock, and equipment damage.

B) Go to your existing thermostat and remove the cover or remove it from the wall as 

needed so you can see the terminals where the wiring is attached.

C) Note what connections your system uses and verify that your thermostat is using the 

correct terminals with the correct wire color as shown in the table below. 

If your installation is using non standard wire colors, you will have to note what color is 
being used for what terminal and match your wire colors to the appropriate terminal. 

Note that if you have a wire connected to terminal “C” or “X”, it will not be used for your 
BAYweb Thermostat installation.

Terminal

Function

Standard Wire 

Color

My Wire Color Connected 

(Y/N) ?

R, Rh, or Rc

24 VAC Supply

Red

W or W1 or 
Aux

Heat or Aux Heat White

G

Fan

Green

Y or Y1

Cool

Yellow

W2

2

nd

 Stage Heat

Brown

Y2

2

nd

 Stage Cool

Light Blue

O

Reversing Valve

Orange

B

Reversing Valve

Dark Blue

E

Emergency Heat

Varies

C or X

24 VAC Return

Blue or Black

NOT USED

6

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Summary of Contents for BW-WT2

Page 1: ...Owner s Manual S N LABEL HERE Document BW WT2DOC ...

Page 2: ... BW WT2 Owner s Manual Copyright 2009 Bay Controls LLC Part Number BW WT2DOC Revision 1 1 November 11 2009 BAYweb and Plug N Go are trademarks of Bay Controls LLC Patent pending technologies are used in the BAYweb Thermostat ...

Page 3: ...b Portal 15 Using Your Mobile Phone 16 Occupancy Sensing 16 Implementing Occupancy Sensing 16 Testing Occupancy Sensing 17 Occupancy Sensing with Multiple Thermostats 17 Alerting 18 Implementing Alerting 18 Testing Alerting 18 Reference 19 Thermostat Keypad 19 Error Codes 19 Control Module 20 Alert Inputs 20 Thermostat Connector 20 Furnace AC Connector 21 LAN Port 21 Line Power 21 Status Indicator...

Page 4: ...e Introduction section and those included at relevant points in other sections of this manual Note that this manual is updated periodically You can download the latest version at www bayweb com CAUTION Read be sure to clearly understand and then carefully follow all of the directions and procedures included in this manual Failure to adhere to the guidelines and specific instructions provided could...

Page 5: ...possibility of equipment damage or personal injury CAUTION If this equipment is used in a manner not specified by Bay Controls LLC there may be a risk of equipment damage serious personal injury or death Labels The following safety labels alerts the installer or operator to possible hazards and serves to remind the user of specific safety precautions Before installing and or operating this thermos...

Page 6: ...n authorized Seller representative Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the original warranty period or ninety 90 days whichever is longer THERE ARE NO REPRESENTATIONS OR WARRANTIES OF ANY KIND EXPRESS OR IMPLIED AS TO MERCHANTABILITY FITNESS FOR PARTICULAR PURPOSE OR ANY OTHER MATTER WITH RESPECT TO ANY GOODS OR SERVICES Limitation...

Page 7: ... uses two modules the Thermostat Keypad and the Control Module This design eliminates the use of batteries and potential need to pull new wire out to the wall and results in a more compact and elegant design The Thermostat Keypad is mounted on wall in place of your existing thermostat If your existing thermostat is larger than the new one you can easily pull off the keypad later to touch up the pa...

Page 8: ...oner and is wired into the existing thermostat cable The control module is powered from a standard outlet The specific installation steps to replace your existing thermostat with the new BAYweb Thermostat are shown in the remainder of the installation instructions If you are installing the thermostat with new equipment the process will be similar except for removal of the old equipment CAUTION Be ...

Page 9: ...t connections your system uses and verify that your thermostat is using the correct terminals with the correct wire color as shown in the table below If your installation is using non standard wire colors you will have to note what color is being used for what terminal and match your wire colors to the appropriate terminal Note that if you have a wire connected to terminal C or X it will not be us...

Page 10: ...nventional One Heat One Cool Y Y 4 Conventional Two Heat One Cool Y Y Y 5 Conventional Two Heat Two Cool Y Y Y Y 6 Conventional One Heat Two Cool Y Y Y 7 Heat Pump One Heat One Cool Y Y 8 Heat Pump Two Heat One Cool Y Y Y 9 Heat Pump Two Heat Two Cool Y Y Y 10 Heat Pump Three Heat Two Cool Y Y Y Y E If you have any question on what system type you have contact support support bayweb com or contact...

Page 11: ...ere you can connect to the Internet If wiring is not convenient we suggest using a power line Ethernet adapter that will allow you to make this connection using your existing power wiring C Prepare the thermostat cable With the furnace air conditioner or heat pump power OFF cut the thermostat wire at a point where both ends will be able to reach the Control Module mounting location Using a wire st...

Page 12: ...crews are tight the wires will not pull out of the terminals and that there are not any shorts between terminals The Control Module is mounted near the furnace where the thermostat cable is routed This location should be within 6 feet of a power outlet You will connect the module to your network using standard Ethernet cable or using the power line Ethernet adapters Orient the Control Module so th...

Page 13: ...roximately inch of insulation from the end of the wire G Using the supplied wire nuts attach the four colored wires coming from the Thermostat Keypad red white green yellow to the four matching colored wires from the cable in the wall If your installation uses non standard wire colors use the table you completed in step 1C to connect your wire colors to the standard color of the Thermostat Keypad ...

Page 14: ...ting screws as shown and described above Connect the Thermostat Keypad to your thermostat wiring as shown Route the slack in the thermostat cable and wiring back into the wall Keep the wire connectors wire nuts on the outside of the wall They will fit inside the Thermostat Keypad when attached to the wall Complete installation of the Thermostat Keypad by sliding it over the anchor screws Be carefu...

Page 15: ...ome router Then just plug the Ethernet cables into the adapters and the ports C The BAYweb Thermostat does not require any configuration or programming of your networking equipment You do not need to change security settings Just plug it in and you are all set to go D Plug in the control module Do not power up your furnace air conditioner or heat pump yet The Power LED on the control module should...

Page 16: ...you have entered a valid email address and validate your identity with the given email You must follow the instructions in the email to activate your account E Once your account has been activated login to your personal web portal at www bayweb com using your user ID and password F After logging in click on the My Devices link on the top right of the page G Click the Add button on the My Devices p...

Page 17: ...urrent temperature Check your furnace or heat pump and confirm that it is heating Note that your fan will not run until your furnace has heated up This may take a few minutes Note that once the heat turns on it will remain on for a minimum of 1 minute and once it turns off if will remain off for 1 minute as well If operating correctly go back to the keypad and change the set point back to a normal...

Page 18: ...l number and key code that are on the front of this manual 15 Indicators show Indicators show which modes are which modes are selected selected Press once to show Press once to show the current set point the current set point Press again to Press again to change change Press to select Press to select HEAT mode If HEAT mode If selected press selected press again to turn OFF again to turn OFF Press ...

Page 19: ...need to do is determine when you generally are asleep and when you generally wake up if you want your house heated before you wake The remainder of the time you can tell the thermostat to sense if you are there or not While Sensing the thermostat will automatically set back the temperature to your Away set point after a period of time of not sensing occupancy Likewise upon sensing occupancy it wil...

Page 20: ...cy sensing review your schedule and set your Sensing Sleep and Home times as described above Your thermostat will now automatically adapt your HVAC operation to match your lifestyle Testing Occupancy Sensing If you want to see if the sensors are working as expected login to the web portal and select Sensor Log from the thermostat applet menu The thermostat applet Operation Log will give a detailed...

Page 21: ...to your mobile phone via text messaging SMS The time it takes for you to receive an alert varies mostly due to the variable delivery time of text messaging The BAYweb alert server will normally dispatch the alert email within 10 seconds of the event Implementing Alerting There is a wide variety of additional sensors and devices that can be integrated into the alerting system Refer to the device in...

Page 22: ...o select heat mode or turn the furnace off COOL The indicator is illuminated when the thermostat is in cool mode The key is used to select cool mode or turn the air conditioner off HOLD The indicator is illuminated when the thermostat is in hold mode The key is used to select or cancel hold mode When in hold mode the current set point will be used regardless of what is scheduled Note that the web ...

Page 23: ... There are three inputs that can be used to connect to a variety of wired sensors such as a sump pump monitor or alarm door contacts To use this feature wire the dry contacts of a sensor or switch to the terminals of one of the inputs The two terminals labeled IN1 are for alert input 1 IN2 for alert input 2 and IN3 for alert input 3 The Settings page on the Web Portal is used to assign the inputs ...

Page 24: ...ic shock this product has a grounding type plug that has a third grounding pin This plug will only fit into a grounding type power outlet If the plug does not fit into the outlet contact a qualified electrician to install the proper outlet Do not change the plug in any way Status Indicators Indicator Description Heat For conventional systems this LED indicates when the thermostat is signaling the ...

Page 25: ...ars to be operating opposite of what it should move the reversing valve wire to the other terminal Troubleshooting We encourage you to communicate any problems you have encountered to us even if you are able to solve them on your own We would also like to have any suggestions or comments about the installation procedure The preferred method of communicating with us is via email We use an automated...

Page 26: ... on the wires at the Thermostat Keypad Contact support for a replacement Thermostat Keypad Fan control does not work Verify on the Thermostat Keypad that the Fan is selected ON Verify on the Control Module that the Fan light is ON Check the red and green wires between the Furnace AC connector on the Control Module and your Furnace AC Check that the Furnace AC has power Heat does not work Verify th...

Page 27: ...eck the Thermostat light on the Control Module If ON the Control Module is receiving data from the Thermostat Keypad the thermostat may be able to control your furnace AC in this condition Check the web portal Contact support for replacement Thermostat Keypad and Control module Thermostat Keypad shows error code E2 The temperature sensor has failed in the Keypad Module The thermostat can not opera...

Page 28: ...at applet Verify the X10 ID settings of the sensor refer to the instructions provided with the sensor Check that the Wireless light on the Control Module turns ON when the sensor is activated Try adjusting moving the antenna wire Wired alert input not working Verify the wired input settings see the Settings page on the thermostat applet Control module not connecting to Internet Uplink light does n...

Page 29: ...entional single stage and heat pump based zoned systems a damper control signal is provided on terminal W2 Note that this terminal is also used for second stage heat on conventional multistage furnaces Zone control installations are beyond the scope of this manual Refer to the appropriate BAYweb Application Note available at www bayweb com for more information Thermostat Connections The following ...

Page 30: ...pment the following wire specification must be followed to maintain the safety ratings of UL 873 18 AWG 4 5 or 7 Conductor 300V Type CL2 UL 105 Deg C Control Module Terminals Required by UL 873 the connector manufacturer specifies the connector terminal screws should be torqued to 4 43 in lbs 0 5 Nm 27 ...

Page 31: ...th NIST atomic clock 1 sec Memory All settings and data maintained in non volatile memory indefinitely Occupancy Alert Inputs Unlimited X10 wireless and 1 wired dry contact input Control Temperature Range 35 to 99 F Control Response 1 F Accuracy 1 F Cycle Rates at 50 Load Heat and cool selectable 2 30 cycles per hour Shipping Temperature Range 40 to 150 F Operating Temperature Range 0 to 120 F Ope...

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