1. Introduction
The information contained in this manual provides general guidelines for the implementation of the CON-X-US remote communication device with Lochinvar boilers. Now from virtually anywhere you can:
- Monitor boiler plant operating conditions at unlimited locations
- Re-program SMART SYSTEM control parameters
- Setup custom text or e-mail alerts for contractor and building owners/managers
CON-X-US Board Layout
Figure 1-1: CON-X-US Board Components. A diagram shows the CON-X-US board with labeled components: ETHERNET PORT, WI-FI MODULE, INPUT POWER (IF NEEDED), INPUT FROM BIC, STATUS LED, and OUTPUT TO DISPLAY.
| LED | Description |
| LED 0 | N/A |
| LED 1 | Control to Display Communication Error |
| LED 2 | CON-X-US Communication |
| LED 3 | N/A |
| LED 4 | Control to Display Communication |
| LED 5 | Power Confirmation |
2. CON-X-US Installation
List of Kit Components
| Material Number | Description | FTXL Qty | KB/WH/KH/AW/SNR Qty |
| 100053762 | SCREW, PHP, 6-32 X 1/4 STL | 10 | 10 |
| 100134843 | RIVET, NYLON PUSH | 2 | -- |
| 100134798 | STAND-OFF, HEX 6-32 X 1/2 STL | 4 | 4 |
| 100163015 | BUSHING, SNAP 1-1/4" | 2 | -- |
| 100137491 | CLIP, WIRE HARNESS, EXTRUDED | 2 | -- |
| 100094892 | BOARD, CON-X-US | 1 | 1 |
| 100189402 | CABLE, RIBBON, 10 CIRCUIT X 74" | 1 | -- |
| 100190832 | HARNESS, POWER, REMOTE, FTX | 1 | 1 |
| 100172950 | CABLE, RIBBON, 10 CIRCUIT X 14" | -- | 1 |
Recommended Tool(s)
- #2 Phillips Head Screwdriver
- 8 mm Wrench or 5/16" Wrench
Gain Access to the Interior of the Unit
⚠️ WARNING: Electrical Shock Hazard. For your safety, turn OFF electrical power supply before making any electrical connections to avoid possible electric shock. Failure to do so can cause severe personal injury or death.
- Turn the main power OFF.
- Turn the main manual gas shutoff to the appliance OFF.
- Remove the front door panel (no tools required).
Figure 2-1: Gain Access to the Interior of the Unit. An illustration shows how to access the unit interior, indicating the ON/OFF SWITCH (on the rear), a PROP ROD for support, and the instruction to REMOVE FRONT PANEL. It also shows to PROP THE BEZEL UP and notes that a brace may need to be removed. FTXL model shown for illustration purposes only.
Installation Procedure
General Steps:
- Using four (4) 100053762 screws, install the four (4) standoffs (100134798) into the four (4) small holes on the front right side of the unit.
- Using four (4) 100053762 screws, install the CON-X-US board (100094892) onto the standoffs.
FTXL Models:
Figure 2-2A: Install FTXL CON-X-US Board. Shows the CON-X-US board mounted with screws and standoffs. Detail A shows the use of 2X RIVET, NYLON PUSH and 2X HARNESS CLIPS. It also indicates installing 2X BUSHING, SNAP, 1-1/4" onto the board.
| Part # | Description |
| 100265396 | KIT,BRKT,BEZEL,CONXUS,KB |
| 100265397 | KIT,BRKT,BEZEL,CONXUS,WH |
Note: FTXL Models Only:
- Install two (2) push rivets (100134843) on the right side of the unit (reference Detail A). Once installed, attach the harness clips (100137491) to the push rivets on the inside of the unit (Detail A), above the main control panel.
- Install two (2) bushings (100163015) into the left and right side of the CON-X-US board.
KB Model Installation:
Figure 2-2B: Install KB CON-X-US Board. Illustrates the installation process for the KB model, showing removal of the top, bezel, and front door. It details installing standoffs, the relay for remote monitoring, and using specific screws (PHP, SHTMTL, PHP PLASTIT).
Note: On units purchased after Serial #1915, the bezel bracket is not required. If purchased between Serial #H10 to D15, the bezel bracket (see Table 2B on page 4) is required. Units purchased prior to Serial #H10 are not compatible.
WH Model Installation:
Figure 2-2C: Install WH CON-X-US Board. Shows the removal of the front door and bezel for WH model installation, with specific screw types and standoff installation. It also notes to record the CON-X-US board QR code before mounting the bezel.
Note: On units purchased after Serial #1915, the bezel bracket is not required. If purchased between Serial #H10 to D15, the bezel bracket (see Table 2B on page 4) is required. Be certain to record the CON-X-US board QR code (see FIG. 3-9 on page 14) before mounting the bezel to the unit.
KH Model Installation:
Figure 2-2D: Install KH CON-X-US Board. Illustrates the installation for the KH model, showing removal of the front door and bezel, and installation of standoffs and relay.
AW Model Installation:
Figure 2-2E: Install AW CON-X-US Board. Illustrates the installation for the AW model, showing removal of the front door and bezel, and installation of standoffs and relay.
SNR Model Installation:
Figure 2-2F: Install SNR CON-X-US Board. Shows the installation of the CON-X-US board on the SNR unit, with a detail view of the board and connection points.
Wiring and Final Steps (SNR Model):
- Connect the 24 volt power harness 100190832 in series with the 24 volt side of the transformer and the other end of the power harness to the CON-X-US board (see FIG. 2-3).
- Disconnect the ribbon cable from the rear of the display board and route it to the ribbon cable plug on the CON-X-US board labeled BIC (remove the ribbon cable from the clip underneath the bezel).
- Connect the ribbon cable (100189402) to the rear of the display and route on the left side of the CON-X-US board and connect it to the ribbon cable plug labeled DU (see FIG. 2-3).
- Reinstall the front panel.
- Turn the power and gas back ON to the unit and resume operation.
Figure 2-3: Wiring Schematic. A diagram illustrates wiring connections between the CONXUS BOARD, CONTROL/USER INTERFACE, and MAIN CONTROL BOARD using ribbon cables and a power harness. It labels the CONXUS KIT RIBBON CABLE and MAIN CONTROL RIBBON CABLE.
Installation Procedure (SWA/R Models Only)
- Turn OFF the main power and gas supply to the unit.
- Remove the upper front bezel by removing the six (6) thumb screws from around the bezel (FIG. 2-4).
- Locate the appropriate bracket from this kit and install the CONXUS board (FIGs: 2-5A and 2-5B).
Figure 2-4: Install SWA/R CON-X-US Board. Shows the SWA/R unit and the removal of the upper front bezel.
Figure 2-5A: Install CON-X-US Board Onto Bracket (Models SWA/R 125 - 200).
Figure 2-5B: Install CON-X-US Board Onto Bracket (Models SWA/R 285 - 500).
- Install the board and bracket assembly onto the heat exchanger frame in the appropriate location as shown in FIGs 2-5C and 2-5D.
- Connect the 24 volt power harness in series with the 24 volt side of the transformer and connect the other end of the power harness into the CONXUS board.
- For SWA/R125-200 Models: Install the kit supplied wire harness clip using the push rivet from this kit (FIG. 2-5C). Collect excess wiring and neatly secure it into the harness clip.
- For SWA/R285-500 Models: Route the wiring from the transformer down along the heat exchanger frame to the CONXUS board. Secure wires in the unit harness clips where possible.
- Disconnect the ribbon cable from the control board and route it to the ribbon cable plug on the CONXUS board labeled DU.
- Locate the longer ribbon cable from this kit and connect it to the ribbon cable plug on the main control board and connect it to the ribbon cable plug labeled BIC on the CON X US board. Secure the ribbon cable in the unit harness clips where possible. Confirm wiring connections using FIG. 2-3 on page 7.
- Replace the upper front bezel and reinstall the six (6) thumb screws to secure the bezel.
- Turn ON the main power and gas supply to the unit and resume operation.
Figure 2-5C: Install Board and Bracket Assembly onto Heat Exchanger Frame (Models 125 - 200). Shows the assembly installation and indicates INSTALL WIRE CLIP.
Figure 2-5D: Install Board and Bracket Assembly onto Heat Exchanger Frame (Models 285 - 500).
3. CON-X-US Registration
NOTICE: The screens depicted in this manual are to be used for illustration purposes only.
Device Registration
- Search for the CON-X-US board like you would search for a Wi-Fi connection on your device. Ensure that your green LED light is ON and that the WLAN LED is OFF.
NOTICE: If your CON-X-US board was installed in a boiler prior to this one, you may experience longer wait times for the CON-XUS link to appear.
- Connect to the device named CON-X-US as shown in FIG. 3-1.
Figure 3-1: Device Connection. A screenshot of a tablet's Wi-Fi settings shows the CONXUS network available and the instruction to connect to it. The text "Connect to Herald - (MAC address of the device listed on the board)" is displayed.
- Once connected to the CON-X-US board, you should be redirected to a Login page. If not, open your internet browser and type 192.168.0.1 in the address bar and click GO. This is where you choose the network you would like the CON-X-US board to be linked with. If the network is secure, you will have to enter the password.
Figure 3-2: Choose Network. A screenshot of a tablet browser displays Wi-Fi status and options to select a network. The text "Choose your network" and "Click "Connect" on the network of your choice" are displayed.
- Enter the security password for your network and click CONNECT.
Figure 3-3: Enter Password. A screenshot of a tablet browser prompts for a Wi-Fi password to connect to a network. The text "Enter Wi-Fi password and click "Connect"" is displayed.
- Your screen should indicate when the WiFi connection is complete. You will also notice a WLAN LED light on the upper left side of the CON-X-US board once it is connected to your internet source.
Figure 3-4: Connection Complete. A screenshot of a tablet browser indicates that the Wi-Fi connection to the CON-X-US board is complete.
- Download the Android App on Google Play or the Apple App from the App Store.
NOTICE: To run the CON-X-US App on your device (Tablet/Phone), you must have a version of iOS 7.0 or above or Android 4.0 or above.
- Once installation is complete, click on the CON-X-US App (logo) on your Tablet/Phone.
Figure 3-5: Click on App. An image of the Lochinvar CON-X-US app logo is shown.
- If you are a new user, you will have to create a new account. If you have an existing account, move on to Step 11.
- To create a new account, open the CON-X-US App and click CREATE NEW ACCOUNT. You will receive an e-mail asking you to confirm your new account. NOTE: Be sure to check your Junk or Spam folders as your new account email may default to one of these folders. You will also be directed to a web page which signifies you have completed the process. Exit the web page and move on to Step 10.
Figure 3-6: Create Account/Login to Existing Account. Screenshots show the app's login interface and the new user account creation form.
- After creating your account, log in to register a CON-XUS board.
- Once you are logged in, you will be directed to the Device Selection Screen. You can now register the unit by clicking on the REGISTER NEW DEVICE button.
NOTE: The unit must have been connected to the internet at some point before registration can occur.
Figure 3-7: Register New Device Button. Shows the Device Selection Screen with a list of registered devices and the "Register New Device" button.
- There are required fields on the Device Registration Screen. Ensure ALL required fields are filled in.
Figure 3-8: Fill in Required Fields. Shows the Device Registration screen with fields for QR Code, Barcode, Site Name, etc.
Figure 3-9: Scan Buttons. Indicates the "Scan" buttons for QR code and serial number input.
NOTE: You can use the SCAN buttons to fill in the QR code (reference FIG. 1-1 on page 2 for QR Code location) on the CON-X-US board and the serial number of the unit, or you can enter them manually.
- When you are finished filling in the fields, click the REGISTER button.
Figure 3-10: Register Button. Shows the Device Registration screen with the REGISTER button highlighted.
- Once registration has been completed, you will be re-directed to the Device Selection Screen. You are now able to select the unit to monitor and change parameters with the App at this time.
Figure 3-11: Select Device. Shows the Device Selection Screen, listing registered devices and allowing the user to select a job to view.
4. Permissions
Whomever registers the CON-X-US will be assigned the role of Site Manager. As you register a CON-X-US, your user information will be automatically populated in the site manager field. The Site Manager is responsible for assigning access to users for each site. As the Site Manager, your contact information will be displayed in the “Site Manager” field on the “Service Notification” page of the setup tab (see FIG. 4-1).
Figure 4-1: Site Manager Contact Info. Shows the CON-X-US app interface with the Setup Tab selected, displaying Site Manager Contact Info and Service Notification sections.
To add a user to a CON-X-US enabled boiler, the user will need to create an account (reference the Create Account section on page 13 of this manual). Once the user you wish to add has created an account, the Site Manager must enter the e-mail address into the Service Personnel Contact Info section of the Service Notification Menu and click the LINK button. This will grant access to the CON-X-US enabled boiler and will be populated on the user's available devices list (reference Select Devices Screen on page 15 of this manual).
NOTE: The UNLINK button can be used to remove a user. If the Site Manager unlinks themselves, the CON-X-US will need to be re-registered.
Figure 4-2: Enter Contact Information to Add User Access. Shows the app interface with fields to enter contact information for adding user access.
Access Levels
For each service provider, the Site Manager can grant either "View Only" access or "View & Edit" access by clicking one of the boxes to the right of the service provider's name. "View Only" access will allow that user to view all information without the ability to make any changes. If the Site Manager would like a user to have "View Only" privileges but receive alerts, the Site Manager must provide the user with "View & Edit" privileges to allow the user to set up the alerts. Once the setup is complete, the Site Manager can then change that user's access level back to "View Only". "View & Edit" access will allow that user to view all information and make programming changes.
Figure 4-3: Access Levels. Shows the app interface with access level check boxes for View Only and View & Edit.
The Site Manager and any user with View & Edit privileges can select which alerts they receive. One, all, or none of these notification types can be selected. By selecting "Lockout", the Site Manager or user will receive a text or e-mail about a lockout condition. Selecting "Block" will result in an e-mail or text message any time the boiler enters a blocking condition. Blocking conditions are not lockouts, but are conditions such as high outlet temperature, high flue temperature, or high Delta T's, that result in the boiler limiting itself. Blocking conditions can occur often depending on the operation conditions, but could also indicate a problem. Anti-cycling Blockings are not relayed. Selecting "Parameter Change" will result in an e-mail or text message every time a parameter is changed remotely from CON-X-US or locally through the user interface on the boiler.
When a boiler with CON-X-US goes into a fault condition, an alert will be sent out via e-mail or text message. A text message will be sent if a cell phone number is entered and the cell box is checked (see FIG. 4-4 on page 18). Otherwise, the user will receive an e-mail.
NOTE: Only the Site Manager is able to see all linked personnel. All other personnel will only see the Site Manager.
Figure 4-4: Enter Cell Phone Info. Shows how to enter cell phone information for text message alerts.
Figure 4-5: Link/Unlink Buttons. Highlights the buttons used to link or unlink users.
*Site Manager can unlink all if unlinked.
Send New Parameters
By accessing the Setup tab, the Site Manager and any user with "View and Edit" privileges will be able to make changes to all accessible parameters and send the parameters to the boiler. To send parameters to the boiler, simply click the SEND UPDATE button. The REVERT CHANGES button will retrieve the last saved parameters and re-populate all the screens with those parameters.
Figure 4-6: Send New Parameters to Boiler. Shows the app interface with the SEND UPDATE and REVERT CHANGES buttons highlighted, along with instructions.
How to use the sort function
By clicking on the ACCOUNT button, you will be taken to a list of all the boilers registered to the Account Manager or user. You can access any boiler on the list by selecting the desired boiler. The sort function can be used to sort the list of boilers by serial number, city, or site name.
If a boiler is gray, this means it is not communicating with the internet. This could mean that the boiler is powered OFF or that the CON-X-US module is not connected to the internet.
Figure 4-7: Sort Function. Shows the Select Device screen with the sort function options (Serial Number, City, Site Name) and instructions.
5. Troubleshooting
Figure 5-1: CON-X-US LED Layout. A diagram of the CON-X-US board highlights the STATUS LED.
| LED | DESCRIPTION | ERROR | CORRECTIVE ACTION |
| LED 0 | N/A | -- | -- |
| LED 1 | Control to Display Communication Error | RED | • Check ribbon cable connections and display. |
| LED 2 | CON-X-US Communication | BLANK | • If blank during known transfer through CON-X-US, review install and registration. |
| LED 3 | N/A | -- | -- |
| LED 4 | Control to Display Communication | BLANK | • No display signal received, check ribbon cable connections. |
| LED 5 | Power Confirmation | BLANK | • Confirm power on 24 VAC supply from transformer. |
| WLAN | Internet Connectivity Confirmation | BLANK | • If after registration, repeat section of set-up. |
| POLARITY | Inverse Polarity Alert | RED | • Swap 24 VAC power and ground. |
Notes
This section is intentionally left blank in the original document.
Compliance Information
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. (2) This device must accept any interference received, including interference that may cause undesired operation.
This Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Revision Notes
Revision A (PCP #3000058429 / CN #500044511) initial release.
Revision B (PCP #3000067237 / CN #500053004) reflects updates to figures to show new board updates.
Document Number: 100374382_2000659651_Rev B, Date: 08/25
