MLM WALL CONTROLLER OPERATING MANUAL PUBLICATION 2007-12/1
INTRODUCTION This Remote Digital Wall Mounted Thermostat/Controller is fitted with a Room Sensor and LCD display. The Thermostat/Controller is supplied in an aesthetically pleasing, compact 80mm by 82mm plastic enclosure. The unit provides for Setpoint Temperature adjustment and Room Temperature display. Further advanced functionality is available for commissioning and set-up purposes. The unit is designed to mount into a round draw-box. The MLM wall controller is designed to work in conjunction with Rickard PC based software for further functionality. OPERATOR PANEL GENERAL LAYOUT LCD SCREEN UP DOWN FUNCTION ENTER / ACCEPT 2007/12-2
GENERAL ROOM OPERATION 1) On start-up (power on), the following screen will be displayed. The software initiates and communicates with all other controllers and interface boards connected on the same circuit. Previously stored information is collected from all controllers and interface boards. The software version number is displayed while the software initiates. 2) Diffuser limit detection: After software initiation the diffuser will drive to the fully closed position. During this process the limit indicators on the display will flash and the direction arrow will show that the diffuser is driving closed. When the motor drives into the end stop, the software will remember that position as the fully closed position. 3) Control mode: After limits are detected, the controller will enter control mode. Room temperature is displayed. The letters Cr indicates Remote Wall Controller temperature as Source for display. When CO is displayed the Source for display is the Onboard sensor. CE is displayed to indicate Control Temperature Error. Wall stat temperature is displayed, but no temperature is selected for control purposes. The controller will now drive the diffuser open towards the position required to get room conditions under control. In picture 1 the display indicates that cooling mode is required to get room conditions under control and the diffuser is busy driving open. In this mode Room temperature is displayed. If Room temperature was colder than set-point, heating mode would have been required to get room conditions under control. PICTURE 1 COOLING MODE INDICATOR 2007/12-3
Picture 2 indicates the diffuser has reached the fully open position. Picture 3 indicates the diffuser is in heating mode and has reached the minimum stop position for heating. The neck heater is on as displayed. The diffuser could also be in heating mode without the neck heater activated. The heater (if fitted) will only be activated when the control disc reaches the correct position for heating. (Factory set at 30% control disc position) PICTURE 2 PICTURE 3 HEATING MODE INDICATOR RE-HEATING ON INDICATOR 4) Set-point adjustment To adjust the set-point, either the UP or DOWN buttons must be pressed. After one of these buttons have been pressed, the current set-point will be displayed. While in this screen, press either the UP or DOWN button to adjust the set-point value. The value displayed will now flash. Press the ENTER/ACCEPT button to return to control mode with the new set-point applied. The top left two digits will indicate respectively the Source of the set-point and which set-point is Active. If the display shows r1, this indicates the Wall thermostat set-point is the source and set-point 1, ie normal control is active. Should the digits show o2 this indicates an onboard controller is where the setpoint is active and the back-off set-point is active at the current time. 2007/12-4
ADVANCED FEATURES 1) Entering Advanced feature mode: Keep the FUNCTION button pressed for 5 seconds until unit Beeps continuously. Release the button and the first advanced feature is displayed. Pressing FUNCTION again to advance to the next feature. 2) Change-over sensing: (Indicated as CO ) When a Supply Air (Change Over) sensor is fitted the supply air temperature will be displayed. When no sensor is fitted, a zero value will be displayed. 3) Room temperature: Wall Thermostat/Controller sensor value is displayed. r indicates source for control purposes is Wall Controller 4) Manual Drive Mode The % control disc opening is displayed. 0% is fully closed. 100% is fully open. dr indicates the unit is in manual drive mode. Select required control disc position with UP or DOWN buttons. Press ENTER to move control disc to selected position. Pressing FUNCTION button deactives manual mode and moves to next feature. 5) Manual Heater Drive Control: The current re-heater output value is displayed as a % of maximum. Ht indicates the unit is in Manual mode. Select required output with UP and DOWN buttons. Press ENTER to activate heater at required level. Pressing FUNCTION button deactives manual mode and moves to next feature. 6) Real Time Clock (RTC): RTC value is displayed. This is for use with Night set-back facility. dx indicates day of the week. x can be anything from 1 to 7. Monday is displayed as 1. To edit the RTC value, press ENTER and the minute display will flash. Select current minutes with UP and DOWN buttons. Press ENTER again and select current hour. ENTER again and select the current day. Press ENTER again to exit the RTC function and advance to next feature. 7) Set-point Temperature This is provided to view other set-point temperatures as described above. Change Over/Supply Air Temperature display Room Temperature Manual Drive Mode Manual Heater Control Real Time Clock Set-point Temperature Page 5