MT-5-A User Manual History of Revisions Revision Date Summary of changes V1.00 April 15, 2023 First release. V1.01 Sept 11, 2023 Revised for RTU. V1.02 Oct 23, 2023 Revised for HPU. V1.03 Nov 07, 2023 Revised for Event Log and RTC time. V1.04 Nov 20, 2023 Revised for FCU.
MT-5-A User Manual 1. Overview MT-5 is a series of advanced thermostat with LoRaWAN, RS485(BACnet MSTP and Modbus RTU), and WIFI supported. It measures the room temperature, and controls the fans and valves to adjust the room temperature to the pre-configured temperature. This device supports configuration like two- pipe/four-pipe, two-lines/three-lines valves, and three fan speeds controls, modulating valve and ECM fan.
MT-5-A User Manual Note : RS485 is the default feature. It is available for LoRA and WIFI version. 4. Specifications MT-5 Pwer Supply 24VAC +20%/-15% 50/60Hz Power Consumption Temperature Sensor 0°C to 70°C ± 0.25°C Temperature Control Range 1°C to 50°C (default is 16-30°C) Humidity Sensor 20% RH to 80% RH ±2.5% RH @ 20°C to 80°C eCO2 Sensor...
MT-5-A User Manual 5. Hardware Descriptions 5.1 Front There are 7 button on the front panel. 4: F IGURE RONT 5.2 Back Main Port is used to connect with the supply power and valve control. Temperature Sensor is used to measure the room temperature. 5: L IGURE OLTAGE WIRING...
MT-5-A User Manual 5.3 Motherboard Battery The only function of the battery is used for saving the device time, it does not need to be replaced in normal circumstances, since the configuration will not be lost even the battery is dead. To replace the battery in the MT-5, the back cover of the screen is required to be removed.
MT-5-A User Manual 6. Wiring Connections 6.1 Power Supply MT-5 when used without offline adapter use 24VAC +20%/-15% or 24VDC +/- 5% 6: C IGURE ONNECTION WITHOUT OFFLINE ADAPTER V1.10...
MT-5-A User Manual 7. Installation Please make sure the device is not powered during installation. MT-5 should be installed at somewhere with good air circulation, far from the heat source and windows, to avoid direct sunlight. It also should be installed in a standard 86-type box (86 x 86 mm). Please do not punch any hole on the cover box, do not disassemble the power adapter, as it will damage the device and cause harm.
MT-5-A User Manual Snap the screen cover on to the bottom cover that is pried open previously. Do not apply force on the screen, as it will damage the screen sensor, apply force at the edge will do the work. Screw back the screw at the bottom to secure the screen.
MT-5-A User Manual 8. Application 8.1 Roof Top Unit Application User can select the operating mode by touch screen mode button or remote access by network command. The available user selectable modes are: Off(by the power button), Fan, Dry, Cool, Heat and Auto.
MT-5-A User Manual Boost Stage Time = 180 s Note : Only SP has unit, either °C or °F, Offsets are unit-less and will add directly from SP. 11: R IGURE EQUENCES V1.10...
MT-5-A User Manual 12: R IGURE ONNECTION Note : FST, DAT and OAT are not implemented yet. 8.1.1 Operation Mode User can change the operation mode from Cooling Mode, Heating Mode and Auto Mode. For RTU application not all the operating mode is valid. Operating Mode Validity/Implement Command from BACnet or LoRaWAN...
MT-5-A User Manual 8.1.2 Compressor On/Off Protection The compressor must be idle for at least 3 minutes once it is deactivated. There will be no delay during power on reset for standard configuration. If the compressor has been turned off for more than 2 minutes before power off, then the compressor can be turned on immediately upon thermostat switch on, otherwise it will has to wait until the 3 minutes has passed.
MT-5-A User Manual 8.2 Heat Pump Application User can select the operating mode by touch screen mode button or remote access by network command. The available user selectable modes are: Off(by the power button), Fan, Dry, Cool, Heat and Auto. Parameters used: Cooling Setpoint User selected cooling setpoint temperature...
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MT-5-A User Manual Boost Stage Time = 180 s Note : Only SP has unit, either °C or °F, Offsets are unit-less and will add directly from SP. V1.10...
MT-5-A User Manual 15: H IGURE PPLICATION Note : FST, DAT and OAT are not implemented yet. 8.2.1 Operation Mode User can change the operation mode from Cooling Mode, Heating Mode and Auto Mode. For HPU application not all the operating mode is valid. Operating Mode Validity/Implement Command from BACnet or LoRaWAN...
MT-5-A User Manual 8.2.2 Compressor On/Off Protection The compressor must be idle for at least 3 minutes once it is deactivated. There will be no delay during power on reset for standard configuration. If the compressor has been turned off for more than 2 minutes before power off, then the compressor can be turned on immediately upon thermostat switch on, otherwise it will has to wait until the 3 minutes has passed.
MT-5-A User Manual 8.3 Fan Coil Application User can select the operating mode by touch screen mode button or remote access by network command. The available user selectable modes are: Off(by the power button), Fan, Dry, Cool, Heat and Auto. Parameters used: Cooling Setpoint User selected cooling setpoint temperature...
MT-5-A User Manual For Auto fan speed in Cool mode, its operation depends on room temperature and set point. 18: F IGURE PEED EQUENCE 8.3.2 Two Pipe Cooling Mode And Heating Mode In this mode , fan is always running. User can select all fan speed. 19: T IGURE OOLING AND...
MT-5-A User Manual 8.3.3 Two Pipe Cooling Only Operation Mode Operating Mode Validity/Implement Command from BACnet or LoRaWAN Cooling Mode Supported Accepted Fan Mode Supported Accepted Heating Mode Not Supported Default to Cooling Mode Auto Mode Not Supported Default to Cooling Mode Dry Mode Supported Accepted...
MT-5-A User Manual 8.3.6 Four Pipe Cooling, Heating and Auto Operation Mode Operating Mode Validity/Implement Command from BACnet or LoRaWAN Cooling Mode Supported Accepted Fan Mode Supported Accepted Heating Mode Supported Accepted Auto Mode Supported Accepted Dry Mode Supported Accepted 8.3.7 Fan Mode User selectable speed are Low, Medium and High.
MT-5-A User Manual 21: D IGURE ONES The determination of Zone only will be done every 12 minutes(one cycle of Dry Mode cycle). For the various operating zones, the cooling valve and the fan sequences are as shown below. Note that the low fan cuts in 30 seconds before the valve cuts in, and the low fan cuts out 30 seconds after the valve cuts out.
MT-5-A User Manual 9. Operation Guides 9.1 Panel Operations 24: P IGURE ANEL UTTONS AND YMBOLS 9.2 Mode Press ‘Mode’ button to switch the device modes. In 4 pipe FCU, HPU and RTU with both Heating and Cooling capabilities application, there are 4 modes can be switched to, which are ‘Cool’ ‘Fan’...
MT-5-A User Manual Auto mode will use these cooling and heating setpoint and can not change setpoint setting in auto mode. In auto mode, pressing up key will show the cooling setpoint, while pressing the down key will show the heating setpoint. 9.5 Time Setting Press ‘Time Setting’...
MT-5-A User Manual Press ‘Time Setting’ button 7 times to enter the ‘minute close timer’ menu, the ‘Timer’ symbol and the ‘minute’ number will now be blinking (when the ‘minute’ is showing ‘-’ instead of number, it means that the timer is not yet enabled), press ‘Increase Temperature’ or ‘Decrease Temperature’...
MT-5-A User Manual Evening Session Time Hour : 0-23, 24 = disable Evening Session Time Minute : 0-59, 60 = disable Night Session Time Hour : 0-23, 24 = disable Night Session Time Minute : 0-59, 60 = disable Morning Session Set Point : Temperature Set Point for morning session Afternoon Session Set Point : Temperature Set Point for afternoon session...
MT-5-A User Manual Press and hold ‘Mode’ button for around 5s, either ‘Cool’ or ‘Heat’ will be blinking depends on the current Application. Use the ‘Increase Temperature’ or ‘Decrease Temperature’ button to switch between Cool and Heat mode. Note that in certain Application, such as 2 Pipe Cooling or Heating only FCU, the mode would not switch as there is only one mode.
The Terminal Program provides a simple way to configure the controller with minimum hardware and software. It uses the controller’s USB type C interface as virtual communication port, MEK-i IO- Module Configuration Tools or any dump terminal software and a PC.
HECK THE COMMUNICATION PORT NUMBER To activate Terminal program, simply click the tab in MEK-i IO-Module Configuration Tools after select the correct PC serial communication port to establish the connection. If any dump terminal software (e.g. Hyper Terminal) is used, create a connection with following...
MT-5-A User Manual 29 T IGURE ERMINAL 11.2 Password Menu The Password is used for Terminal Program login. The default value is ‘1234’. 30: T IGURE ERMINAL ASSWORD 11.3 Main Menu The main menu consist of several setting menu as shown. V1.10...
MT-5-A User Manual 11.4.1 Thermostat Application There are twelve application: 1. Roof Top Unit 2. Heat Pump Unit 3. Fan Coil Unit Two Pipe Cooling Only With On/Off Valve 4. Fan Coil Unit Two Pipe Heating Only With On/Off Valve 5.
MT-5-A User Manual 11.4.2 O/B Mode This defines the Four Way Valve Switch in O or B mode. 11.4.3 Operation Mode Retrieve and control the current operation mode. V1.10...
MT-5-A User Manual Depends on the selected application, some of the application does not support certain operation mode. Refer to section 8 for further details. 11.4.4 Keylock Touch screen button can be locked to prevent user changing the settings. V1.10...
MT-5-A User Manual 11.4.5 Clock Mode Clock display can be set to 24 hour format or 12 hour format. 11.4.6 Power On Off Set the device on or off. V1.10...
MT-5-A User Manual 11.4.7 Power On Default State Configure the power on default state. 11.4.8 Thermistor Selection Select internal or external thermistor sensor. V1.10...
MT-5-A User Manual Various Offset and Setpoint Maximum and minimum settings 11.6 Thermostat User Override Default Time 11.7 Thermostat Time Limit Configuration V1.10...
MT-5-A User Manual Various minimum timing settings 11.8 Thermostat Schedule Configuration The scheduler consist of a weekly schedule with each day four sessions. Refer to section 9.7. V1.10...
MT-5-A User Manual 11.9 LoRaWAN Setting All parameters for the operation of the thermostat LoRaWAN can be set/read through LoRaWAN Setting menu. User can obtain all the information for the DevEUI, App/JoinEUI, AppKey, etc or apply your own parameters. V1.10...
MT-5-A User Manual 32: T IGURE ERMINAL LOCK ETTING Set up Real time clock. The Real Time Clock stores the local time. UTC time will be obtained by substrating RTC time with UTC offset. 11.11 Device Information 33: T IGURE ERMINAL EVICE NFORMATION...
MT-5-A User Manual 11.13 Restore Factory Default Setting 36: T IGURE ERMINAL ESTORE ACTORY EFAULT ETTING This option will reset all the settings back to the factory default, including the LoRaWAN DevEUI etc. V1.10...
MT-5-A User Manual 11.14 Reboot 37: T - RE IGURE ERMINAL BOOT The reboot function is used when settings like Serial Port Configuration changes. The device need to be reboot for the new Serial Port Setting to take effect. LoRaWAN(Only Model with LoRa) 12.1 Regional Parameters MT-5 implements Regional Parameters RP002-1.0.3 Final.
MT-5-A User Manual Example : LW:D0:18A788FFFEFFFE00:18A7880200000000:FFFF0000 Note : The VenderID and VenderProfileID will be provided after MT-5 has join LoRa Alliance. User can provide his own VenderID and VenderProfileID in the USB terminal. 12.3 OTAA There are three essential parameters to be used in LoRaWAN OTAA, which are ‘DevEUI’, ‘JoinEUI’ and ‘JoinKey’.
MT-5-A User Manual 12.8 Payload It is necessary for the application to encode the application data structure into raw data before sending it down stream to a node and decode the raw data received from the node to application data structure that the application could understand. 12.9 FUOTA MT-5-A supports FUOTA.
MT-5-A User Manual 12.12.2 GET_SETTING0_REPLY Operating Setting : 7 BYTES Byte 0 : Header (D7: Toggle when receive a downlink, D6-D1:Data type Command, D0: 0x01) Byte 1: Application 0 = RTU 1 = HPU 2 = FCU Two Pipe Cooling Only with On/Off Valve 3 = FCU Two Pipe Heating Only with On/Off Valve 4 = FCU Two Pipe Cooling Only with Floating Valve 5 = FCU Two Pipe Heating Only with Floating Valve...
MT-5-A User Manual Byte 7-8: Set Point Max*100, 16.0 to 86.0. Byte 9-10: Set Point Min*100, 16.0 to 86.0. 12.12.5 GET_SETTING3_REPLY operating setting Cont.. : 9 BYTES Byte 0 : Header (D7: Toggle when receive a downlink, D6-D1:Data type Command, D0: 0x01) Byte 1-2: W(1) Offset*100, -9.9 to 9.9.
MT-5-A User Manual Byte 2: 0 = Disable, 1 = Enable Byte 3-4: Morning Session Cooling Set Point * 100, 16.0 to 86.0. Byte 5-6: Afternoon Session Cooling Set Point * 100, 16.0 to 86.0. Byte 7-8: Evening Session Cooling Set Point * 100, 16.0 to 86.0. Byte 9-10: Night Session Cooling Set Point * 100, 16.0 to 86.0.
MT-5-A User Manual Byte 1: Weekday(0-6, Sunday to Saturday) Byte 2: 0 = Disable, 1 = Enable Byte 3-4: Morning Session Cooling Set Point * 100, 16.0 to 86.0.. Byte 5-6: Afternoon Session Cooling Set Point * 100, 16.0 to 86.0.. Byte 7-8: Evening Session Cooling Set Point * 100, 16.0 to 86.0..
MT-5-A User Manual 13. BACnet Object Table Type & Object Name Readable/Writable Description Range and Definition Instance On Off Status BV 1 Current On Off Status 0 = Off, 1 = On W2|O/B|W Status DO Status 0 = Off, 1 = On W1|Y Status DO Status 0 = Off, 1 = On...
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MT-5-A User Manual Temperature Temperature -9.9 ~ 9.9 Compensation Compensation Temperature Offset Temperature Offset -9.9 ~ 9.9 Y1 Offset Y1 Offset -9.9 ~ 9.9 Y2 Offset AV10 Y2 Offset -9.9 ~ 9.9 Y3 Offset AV11 Y3 Offset -9.9 ~ 9.9 W1 Offset AV12 W1 Offset...
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MT-5-A User Manual 0 ~ 23, Tuesday Scheduled Off Tuesday Scheduled Off AV63 Time Hour Time Hour 24 = Disable 0~ 59, Tuesday Scheduled Off Tuesday Scheduled Off AV64 Time Minute Time Minute 60 = Disable 0 ~ 23, Tuesday Morning Session Tuesday Morning Session AV65 Hour...
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MT-5-A User Manual Tuesday Night Session Tuesday Night Session AV80 16 ~ 86 Heating Set Point Heating Set Point 0 ~ 23, Wednesday Scheduled On Wednesday Scheduled On AV81 Time Hour Time Hour 24 = Disable 0~ 59, Wednesday Scheduled On Wednesday Scheduled On AV82 Time Minute...
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MT-5-A User Manual Wednesday Morning Wednesday Morning AV97 16 ~ 86 Session Heating Set Point Session Heating Set Point Wednesday Afternoon Wednesday Afternoon AV98 16 ~ 86 Session Heating Set Point Session Heating Set Point Wednesday Evening Wednesday Evening AV99 16 ~ 86 Session Heating Set Point Session Heating Set Point...
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MT-5-A User Manual Thursday Afternoon Thursday Afternoon AV114 16 ~ 86 Session Cooling Set Point Session Cooling Set Point Thursday Evening Session Thursday Evening Session AV115 16 ~ 86 Cooling Set Point Cooling Set Point Thursday Night Session Thursday Night Session AV116 16 ~ 86 Cooling Set Point...
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MT-5-A User Manual 24 = Disable 0~ 59, Friday Night Session Friday Night Session AV132 Minute Minute 60 = Disable Friday Morning Session Friday Morning Session AV133 16 ~ 86 Cooling Set Point Cooling Set Point Friday Afternoon Session Friday Afternoon Session AV134 16 ~ 86 Cooling Set Point...
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MT-5-A User Manual 0 = Cooling Mode, 1 = Fan Mode, Set Operation Mode Set Operation Mode 2 = Heating Mode, 3 = Auto Mode, 4 = Dry Mode Determine the thermostat Power On Off Default 0 = On Boot Off 1 = On Boot Restore should be on or off when State...
MT-5-A User Manual FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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