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User Guide for nVent models including: NXT40B0E1U01500, NXT40B0E1U01500 Air Conditioner, NXT40B0E1U01500 AC, Air Conditioner, AC
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DocumentDocumentWe connect and protect nVent Air Conditioner NXT40B0E1U01500 Quick Start Guide TABLE OF CONTENTS Controller ...........................................................................................................................................................3 1. Controller key functions ..................................................................................................................................................... 3 2. Controller icon descriptions................................................................................................................................................ 4 3. Changing cooling setpoint ................................................................................................................................................. 5 4. Accessing main menu ........................................................................................................................................................ 5 5. Enabling and disabling the evaporator fan management feature ..........................................................................................7 6. Switching display from Celsius to Fahrenheit/Fahrenheit to Celsius ................................................................................... 8 Remote access ...................................................................................................................................................9 7. Running web interface ....................................................................................................................................................... 9 8. Changing password ..........................................................................................................................................................10 9. Changing IP address .........................................................................................................................................................10 10. Viewing sensors (read-only) parameters ......................................................................................................................... 11 11. Changing setpoint (read-write) parameters .....................................................................................................................12 12. Viewing alarms ...............................................................................................................................................................12 13. Viewing events ................................................................................................................................................................13 2 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 CONTROLLER 1. Controller key functions Key Name Function ON/Standby Press and hold to turn the device ON or OFF or to return to the main page from an internal menu Press while setting parameters to cancel the edit and return to the screen SET Hold UP DOWN Press and hold to go to the settings menu Press to access the setpoint menu (SET) Press once to confirm the edit In menu navigation, it functions like an ENTER key Press to navigate through menus Press and hold from the main page to LOCK (Loc) or UNLOCK (UnL) the keyboard HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 3 2. Controller icon descriptions Icon Meaning Compressor Description ON: Compressor is running BLINK: Timers are in progress BLINK FAST: Compressor is running under high load (sequencing configuration) OFF: Compressor is off Condenser fan ON: Fan is running BLINK: Pre or post-ventilation cycle is in progress OFF: Fan is off Heater (optional) Alarm ON: Heating element is on BLINK: Timing is in progress OFF: Heating element is off ON: At least one manual reset alarm is in progress BLINK: Automatic reset alarms are in progress OFF: if no alarm is in progress Energy saver ON: if the evaporator fan economy cycle is in progress OFF: if the evaporator fan economy cycle is not in progress Gear ON: Device is not in the primary view BLINK: Maintenance reporting is active OFF: Normal operation Celsius degrees Units in °C Fahrenheit degrees Units in °F Units of measurement % OFF On/Standby ON: Regulation is not active OFF: Regulation is active 4 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 3. Changing cooling setpoint Press SET to access the COO parameter for setting the cooling setpoint. Step 1: Press SET, COO will appear Step 2: Press SET, cooling setpoint will appear Step 3: Press SET until setpoint blinks Step 4: Press up or down to adjust, press SET to save desired setting, press SET to exit 4. Accessing main menu Press and hold SET to enter the User menu level. Available menus: · SEt Access to adjust cooling setpoint · ALM View the list of active alarms · PAr View and edit device parameters · OHr View the operating hours of the device and components · HiS View alarms history · nFo Displays device information · PSS Enter passwords to access the Maintenance and Manufacturer user levels · CoL For starting the testing sequence HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 5 To scroll through menu options, press the up or down keys. When desired menu is displayed, press SET to enter the menu. SEt Adjust cooling setpoint OHr Displays the hours of operation ALM Displays the list of current alarms HiS Displays the alarms history PAr Allows device parameters to be edited nFo Displays device information PSS to enter passwords for authorized user access CoL to start testing sequence 6 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 5. Enabling and disabling the evaporator fan management feature Step 1: Press and hold SET until SEt appears Step 2: Press down until PAr appears Step 3: Press SET, PG will appear Step 4: Press down until PP appears Step 5: Press SET, PO1 will appear Step 6: Press SET, number displayed is minutes evaporator fan alternating on/off in non-cooling Step 7: 15 minutes is default, management feature is ON Step 8: Set time to 0 to turn OFF. Press SET to save setting. Evaporator fan will run continuously Step 9: Icon shows feature is active HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 Step 10: No icon, feature is not active nVent.com/HOFFMAN | 7 6. Switching display from Celsius to Fahrenheit/Fahrenheit to Celsius Step 1: Press and hold SET until SEt appears Step 2: Press down until PAr appears Step 3: Press SET, PG will appear Step 4: Press SET, G01 will appear Step 5: Press Down until G07 appears Step 6: Press SET Step 7a: 0 = Celsius, press SET to confirm Step 7b: 1 = Fahrenheit, press SET to confirm 8 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 REMOTE ACCESS 7. Running web interface Connect hardware: Connect RJ45 cable to Ethernet port on the Gateway and to computer (or to router) Power NXT40B0E1U01500Unit Get Gateway's IP address Tap the Gateway screen to wake it. MAIN MENU appears. Tap NETWORK to view Net Config with Gateway's IPv4 and IPv6 addresses. Connecting with web interface Open a web browser and enter the Gateway IP address. The login box appears: Enter username and password, then click Login. Username: admin Password: admin Web interface screen appears: To change the password, go to USER MANAGEMENT (top left), then Change Password. Enter new password, then click OK. HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 9 8. Changing password Go to USER MANAGEMENT, then Change Password. The CHANGE PASSWORD screen appears: Enter old and new passwords, then click OK to save the new password. 9. Changing IP address Click DEVICE SETTINGS, then Network, then IPv4 Settings. The IPV4 SETTINGS screen appears: Click Address Assignment to choose DHCP or STATIC. DHCP: 1. Unit gets its IP address from a DHCP server. 2. The IP in the IP Address textbox is the previous address. STATIC: 3. Enter unit's IP address in the IP Address textbox. 4. Unit will use this IP. Click OK to save IP settings to unit. 10 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 10. Viewing sensors (read-only) parameters The Sensors tab shows all sensor parameters and their information, and always appears in the web interface: The web interface always shows an EXPLORER panel with the unit tree (TX-i40/1:6). The tree has Controls and Sensors branches. The Sensors branch has read-only parameters. Expand it to see the parameters. Clicking a parameter opens a tab with its information. HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 11 11. Changing setpoint (read-write) parameters Expand the Controls branch on the EXPLORER panel. The Controls branch has read-write parameters. Clicking a parameter opens a tab where the parameter value can be changed. To save changes, click Set. 12. Viewing alarms Click ALARMS (top right) to view collected alarms. The ALARM TABLE screen appears: 12 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 13. Viewing events To view events collected by the unit, click EVENTS (top right). The SYSTEM EVENT LOG screen appears: HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 13 14 | nVent.com/HOFFMAN HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 15 North America Tel 763.422.2211 service@nVent.com Europe Tel +39.0376.554511 texa.service@nVent.com Our powerful portfolio of brands: CADDYERICOHOFFMANILSCOSCHROFFTRACHTE ©2025 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without notice. HOFFMAN-DG-N1275351-NXT40B0E1U01500QuickStart-USEN-2505 nVent.com/HOFFMAN | 16