1 | 028-6145-00 November 2017 C ONTENTS Configuring and Status Display Instructions 2 Status display 2 User Interface 3 Local keypad interface 3 Configuration interface 4 VT7225 Series User Interface Guide For Modulating Heat Applications November 2017 2 | 028-6145-00 November 2017 C ONFIGURING AND S TATUS D ISPLAY I NSTRUCTIONS Status display The Room Controller features a two-line, eight-character display. There is a low-level backlight level that is always active and can only be seen at night. To turn on the back light to high level, press any key on the front panel. The back lit display will return to low level when the Room Controller is left unattended for 45 seconds. Occupancy Status • Occupied, Unoccupied and Override status are displayed on the display. LED Status Status LED’s on the Room Control cover are used to indicate a call for heat. When heating & reheat is ON, the HEAT LED will illuminate Not used 3 | 028-6145-00 November 2017 U SER I NTERFACE Unoccupied mode override An Override can be made during an unoccupied period. Local keypad interface 4. Any setpoint change can be permanent or temporary based on configuration parameter (Setpoint Type) 5. Lockouts of access to certain functions is made with configuration parameter (lockout) Unoccupied setpoints adjustments Setting of the unoccupied setpoints is done through configuration setup only. 1. An Override can be made during an unoccupied period. If the Override option is enabled in the lockout configuration pressing the override key will resume occupied setpoints for a time specified by parameter ToccTime 2. Decrease setpoint 3. Increase setpoint 4 | 028-6145-00 November 2017 Installer Configuration Parameter Menu Configuration can be done locally on the Room Controller. To enter configuration, press and hold the left button (Override) for 8 seconds. If a password lockout is active, “Password” is prompted. Enter password value using the “up” and “down” arrows and press the middle button again to gain access to all configuration properties of the Room Controller. Entering a wrong password will prevent local access to the configuration menu. 1. Press the same middle button repetitively to scroll between all the available parameters. 2. Use the up and down key to change the parameter to the desired value. 3. To acknowledge and save the new value, press the override button again. 4. The next parameter will now be displayed. Configuration interface Remote NSB Operation: remote NSB timer clock input. The scheduling will now be set as per the binary input (BI1). It provides low cost setback operation via a dry contact. • Contact opened = Occupied • Contact closed = Unoccupied Supply air sensor: Used for supply air temperature control. Connecting a 10K Type II probe to pin UI3 enables this feature. The proportional band and integral time are automatically adjusted for supply air control. The display will show “SuppTemp”. Pressing repetitively will individually scroll all the available parameters Adjust value down Adjust value up 5 | 028-6145-00 November 2017 CONFIGURATION PARAMETERS DEFAULT VALUE SIGNIFICANCE AND ADJUSTMENTS PswrdSet Default value = 0 This parameter sets a password access to prevent unauthorized access to the configuration menu parameters. A default value of “0” will not prompt a password or lock the access to the configuration menu. Range: 0 to 1000 MenuScro Default value = Off Removes the scrolling display and displays the room temperature to the user. On = Scroll active Off = Scroll not active °C or °F Default value = °F Sets scale of the Room Controller • °F for Fahrenheit scale • °C for Celsius scale Lockout Default value = 0 No lock Keypad lockout levels USER KEY FUNCTIONS LEVEL 0 1 2 NOT USED 3 4 5 6 | 028-6145-00 November 2017 CONFIGURATION PARAMETERS DEFAULT VALUE SIGNIFICANCE AND ADJUSTMENTS Unocc HT Default value = 62°F (17°C) Unoccupied heating setpoint Range is: 0 to 180 °F (-17 to 82 °C) Heat max Default value = 90°F (32°C) Maximum occupied & unoccupied heating setpoint adjustment. Range: 0 to 180°F (-17.0 to 82°C) Heat min Default value = 54°F (12 °C) Minimum occupied & unoccupied cooling setpoint adjustment. Heating setpoint range is: 0 to 180°F (-17.0 to 82°C) Note: Heat max has priority over Heat min value. Pband Default: 3 Adjust the proportional band used by the Room Controller PI control loop. Note that the default value of 3.0°F (1.2 °C) gives satisfactory operation in most normal installation cases. The use of a proportional band different than the factory one is normally warranted in applications where the Room Controller location is problematic and leads to unwanted cycling of the unit. A typical example is a wall mounted unit where the Room Controller is installed between the return and supply air feeds and is directly influenced by the supply air stream of the unit. Note: When a supply sensor is connected to UI3, this parameter is not used. The internal proportional band is fixed at 50 °F (27 °C). VALUE °F SCALE PBAND °C SCALE PBAND 3 3 F 1.2 C 4 4 F 1.7 C 5 5 F 2.2 C 6 6 F 2.8 C 7 7 F 3.3 C 8 8 F 3.9 C 9 9 F 5.0 C 10 10 F 5.6 C Set Type Default: Permnent Temporar: (temporary) Local changes to the heating or cooling setpoints by the user are temporary. They will remain effective for the duration specified by “ToccTime”. Setpoints will then revert back to their default value after internal timer “ToccTime” expires. Permnent: (permanent) Any change of occupied or unoccupied setpoints through the keypad by the user are permanent and saved to & EEPROM 7 | 028-6145-00 November 2017 ToccTime Default value = 2 hours Temporary occupancy time with occupied mode setpoints when override function is enabled. Range: 0-24 hours Cal RS Default value= 0.0 °F or °C Offset that can be added/subtracted to the actual displayed room temperature Range: ± 5.0 °F, 1.0 °F increments (± 2.5 °C, 0.5 °C increments) Viconics Technologies Inc. Tel.:Fax:Toll free: www.viconics.com Next >