mlm 24 user manual
Contents
1. The heater icon will flash to indicate the heater is manually controlled The character display will indicate zero until the new value is accepted and the heater in that zone controlled to the new value To advance to the next menu press the Function select button The control will revert back to automatic mode gt Sub menu 5 Option 1 Manual Control Zone Setup To bind a diffuser to a control zone the following steps are required The top left function display will indicate LS for Loop Select Keep the enter button pressed until the unit beeps The menu displays L and a zone number normally 00 will flash If the zone has been set up previously that particular zone number will display instead of the 00 Use the up down arrow to select a zone number On a new installation always start with zone 1 Press enter and observe the L starting to flash Go to the first diffuser in that zone and press the button on the Diffuser Controller board normally situated on the trim disk BT0070 General Release PAGE 16 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS After a few seconds the wall stat unit will beep and the flashing LED on the Diffuser Controller board will stay switched on momentarily both to indicated the diffuser is set up for that control zone Go to the next diffuser in that zone and press the button again and observe the same result All the while the L indicator will flash and the zone number will be on2. not selected the display shows the space temperature measured by the wall stat No temperature is selected for control purposes Onboard Control temperature the display shows onboard temperature as measured LO inside the diffuser This temperature is used for the room temperature control Remote Control temperature the display shows temperature as measured by the LT wall stat This temperature is used for the room temperature control 3 1 3 SETPOINT SELECTION Setpoint selection is achieved by pressing either the up or down arrow button momentarily The buzzer will sound once the SP icon will switch on and the current setpoint value will show on the digital display The default value is 22C 71 F The top left function digits will indicate respectively the source of the setpoint and which setpoint is active If the function display shows r1 it indicates the remote setpoint wall stat is the temperature source and setpoint 1 ie normal control is currently active Should the function digits show 02 it indicates an onboard master controller inside the diffuser is where the setpoint is activated and the back off setpoint is active at the current time By pressing the up or down buttons the setpoint value will increment or decrement in 0 5 degree intervals Please note only setpoint 1 for normal control can be edited by this function Pressing the enter button right bottom will exit the setpoint functi
3. permanently Continue the process until all the diffusers in the control zone has been selected Press the enter button and observe the L stationary and the zone number flashing Using the up down arrows select the next zone number and press enter Using the same procedure set up each diffuser in the control zone of interest A maximum of fifteen control zones one diffuser per zone can be set up By the same token a minimum of one zone containing from one to fifteen diffusers slaves can also be set up Press enter again to exit the last zone setup To advance to the next menu press the Function button gt Sub menu 5 Option 2 Auto Zone Setup In the special instance where all the diffusers connected to a Power Supply are intended as Master Diffusers the Auto Loop Select function can be used To bind each diffuser to a control zone the following steps are required The top left function display will indicate LS for Loop Select Keep the enter button pressed until the unit beeps The menu display L and a zone number normally 00 will flash If the zone has been set up previously that particular zone number will display instead of the 00 Press the down arrow until the A character for Auto flashes Press enter and observe the L starting to flash Observe the loop number increasing to 5 then 9 and 13 as the control zones are being set up With each increment the buzzer will sound Once the process is complete the L a
4. stop disk position in percentage with the top left function display indicating dr The down arrow and single bar will flash to indicate open end stop To change the open end stop position press the up down arrows for the required position and press enter The display will flash until the new parameter is accepted by the system Should the disk be outside the end stop range it will manually drive the diffusers in that control zone into range To advance to the next menu press the Function button BT0070 General Release PAGE 15 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS gt Sub menu 3 Control disk close end stop The display will show the close end stop disk position in percentage with the top left function display indicating dr The up arrow and bar will flash to indicate close end stop To change the close end stop position press the up down arrows for the required position and press enter The display will flash until the new parameter is accepted by the system Should the disk be outside the end stop range it will manually drive the diffusers in that control zone into range To advance to the next menu press the Function button gt Sub menu 4 Heater output The display will show the current heater output in percentage with the top left function display indicating Ht To manually drive the heater output press the up down arrows for the required percentage output and press enter
5. July 2010 MLM_24 Reference Manual LHA SYSTEMS 3 Hardware components 3 1 MLM DIGITAL REMOTE WALL THERMOSTAT WS 3 1 1 USER INTERFACE The user has access to the system setup and diagnostics via the pushbutton and LCD interface on the Wall Thermostat Unit wall stat LCD All Seqments On Scroll Function Up Select Scroll Enter Down LCD KEY TABLE Segment Display Description Function a Degrees Celsius Control O Degrees Fahrenheit Control Function Display Control General oc E m m Main Display All III BT0070 General Release PAGE 10 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS Icon Display Description Function tls Liter per second Air volume cfm Cubic feet per min Air volume Battery Low Diagnostics O Setup Commissioning SP Setpoint Control e Cooling mode Control 3 Heating mode Control Real time clock Back off timer amp Wireless connect Connection V Air flow detect limit Air volume SSS Heater on Control _ End stop open close Control A Moving towards close Control Actuator not moving Control y Moving towards open Control Percentage display Control BT0070 General Release PAGE Rev A 11 July 2010 MLM_24 Reference Manual LHA SYSTEMS 3 1 2 TEMPERATURE DISPLAY The default display shows room temperature The top left function display shows the temperature source re Control temperature
6. d as day 1 To edit the RTC press the enter button and the minute display will flash Select the current minute value with the up or down buttons Press enter again and select the current hour Enter again and select the current day Pressing enter again will now exit the RTC edit function The RTC facilitates the back off control function for energy conservation The back off function is activated through the MLM Application by setting the SP2 value during commissioning Press the Function Select button to exit this function and advance to the next display BT0070 General Release PAGE 13 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS Edit Mode The edit mode allows extended setup features through the wall stat The edit mode is enabled through the MLM Application by selecting the wall stat box in the Network screen as indicated Selecting the Setup Tab opens the Edit Mode select tick box Online Network View I elsis sialB Ch 0 Type 7 Id 1 Serial 09090665 c Identification c Process C Setup tee NETWORK ae l WaliStat ID 1 TC 7 Serial No 09090665 Product Code BT23 Cc OF Z4 Sen 16 9 C 28 co 163 C Z sp 1 25 0 C 58 sP 2 El Global Zone Type Edit mode C Setpoint Edit Disable C Setpoint Display Setup Menu Enable BT0070 General Release PAGE 14 Rev A July 2010 MLM_24 Reference Manua
7. l LHA SYSTEMS e Setpoint Edit Disable This feature disables the setpoint from being altered on the wall stat unit The setpoint can still be edited through the MLM Application This feature can only be activated through the MLM Application e Setpoint Display The default display on the wall stat is for setpoint instead of the space control temperature display This feature can only be activated through the MLM Application e Setup Menu Enable If this function is selected the step through menu enables the following setup sub menu features These features will follow directly after the Real time clock function indicated above Please note that these setting will be applied to all the diffusers connected in a control zone master or slave The icon will show to indicate this sub menu selection gt Sub menu 1 Actuator Drive Control The display will show the current control disk position in percentage with the top left function display indicating dr for motor drive To manually drive the disk press the up down arrows for the required position and press enter The double bar icon will flash to indicate the motor is manually controlled Verify the disk movement of all the diffusers in that control zone and the position display update To advance to the next menu press the Function button The control will revert back to automatic mode gt Sub menu 2 Control disk open end stop The display will show the open end
8. nd A characters will be displayed as static Each diffuser is now set up for a separate control zone To advance to the next menu press the Function button gt Sub menu 6 Control input select The next function is to select the setpoint control and supply air temperatures for a particular control zone To use this function the wall stat must be connected to a diffuser in the control zone to be set up On a default system with only one wall stat or one analog module connected to a control zone this function is not required and best not used The function display will indicate tS BT0070 General Release PAGE 17 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS The character display will indicate the current status of the three control inputs as follows o indicates on board for on board master module r indicates remote for wall stat indicates not selected Keep the enter button pressed until the unit beeps The first character will flash with the display indicating t for control temperature selection Pressing the up down arrows will toggle between remote or on board temperature selections Be sure to select a valid option ie when selecting r there must be a wall stat connected to that particular control zone Press enter and the character S will show to indicate setpoint selection The up down arrows will toggle this function Press enter to select the supply air input character C The arrow bu
9. on 3 1 4 STEP THROUGH MENU The user has the option to step through the diagnostic and manual control menu Pressing the right top button Function Select for 5 seconds will activate this feature The buzzer will sound once and the display will advance to the next function To exit this mode the user must press the Function Select button for 5 seconds before the buzzer will sound and the display will revert to the default space temperature value The Step Through Menu will select the following functions BT0070 General Release PAGE 12 Rev A July 2010 MLM_24 Reference Manual LHA SYSTEMS Menu 1 Change over display The top left function digits displays CO to indicate the supply air changeover temperature is being displayed If no supply air sensor is connected the display will indicate zero Press the Function Select button to advance to the next display Menu 2 Remote temperature display The top left function displays r to indicate the remote wall stat temperature is being displayed This temperature is displayed regardless of temperature selection for control purposes Press the Function Select button to advance to the next display Menu 3 Real time clock function The watch icon will switch on to indicate the RTC function is selected The current time hh mm will show The top left function displays dX with X being any digit between 1 and 7 to indicate the current day of the week Monday is displaye
10. ttons will toggle between O r and if supply air measurement is not required On pressing enter again the three characters will flash until the system has accepted the new setup Should a capital E character be displayed it indicates an ERROR as the setup could not be done on the device being selected Typically the o was chosen for on board sensing or setpoint but an on board controller is not installed in that control zone Repeat with the correct selection of parameters Press the Function button to exit this function e To exit the step through menu The display will now display the setpoint s as described above To exit the step through menu the user must press the Function Select button one more time and the display will revert to the default room temperature value BT0070 General Release PAGE 18 Rev A
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