MV Heating MV Airo 4 Instruction Manual

1 MV Heating UK Ltd MV Airo 4 MV Airo 4 Diesel Powered Air Heater Instruction Manual Ed. 2.01 MV Heating UK Ltd Unit 6 Second Avenue Business Park Millbrook Southampton SO15 0LP

2 MV Heating UK Ltd Preface Thank you for purchasing the MV Airo 4 diesel heater (hereinafter referred to as ‘the heater’). This manual will attempt to describe the structure, working principle, installation and operation of the heater. For future reference please keep this manual in a safe and convenient place. Note • This instruction booklet is subject to revision without notice but the instruction book is in conformity to the purchased product. • The manual will attempt to answer any and all questions the user may have. If you have and further questions or find anything incorrect within this manual, please contact us directly. • Please check that the heater is not damaged when first unpacking it and contact the dealer immediately if any problems are found. • If any problems or faults arise during installation or operation, please contact us directly or any other customer service station authorised by our company. We shall do our best to offer you our full support.

3 MV Heating UK Ltd Contents Uses and Applications ................................................................................................................... 5 Safety Information ................................................................................................................... 6 Technical Data .............................................................................................................................. 7 Kit Contents ............................................................................................................................. 8 MV Airo 4 Dimensions ............................................................................................................. 9 Installation: ................................................................................................................................. 10 Installation Positions .............................................................................................................. 10 Installation Angle ................................................................................................................... 12 Wiring Harness Connector Positions ................................................................................. 13 Installation: Mounting ........................................................................................................... 14 Installation: Ducting and Pipework ........................................................................................ 16 Exhaust System ................................................................................................................. 17 Combustion Air Intake ...................................................................................................... 18 Installation: Fuel Lines ........................................................................................................... 19 Fuel Line Connectors ......................................................................................................... 20 Fuel Line Length and Order ............................................................................................... 21 Fuel Pump Angle for Installation ....................................................................................... 22 Fuel Tank Head ................................................................................................................. 23 Fuel Standpipe .................................................................................................................. 24 Electrics: ..................................................................................................................................... 26 Components .......................................................................................................................... 26 Wiring Diagram ...................................................................................................................... 27 Control Connections .............................................................................................................. 28 Operation: .................................................................................................................................. 30 Rheostat Control .................................................................................................................... 30

4 MV Heating UK Ltd Mini Timer ............................................................................................................................. 30 Manual Start Up and Shut Down ...................................................................................... 32 Pre-setting Heating Time .................................................................................................. 32 Pre-setting Starting and Heating Times ............................................................................ 32 Checking Temperature ...................................................................................................... 33 Converting to Thermostatic Mode .................................................................................... 33 Fault Information .............................................................................................................. 33 Remote Operation ............................................................................................................ 34 Installation Fuel Priming Feature ...................................................................................... 34 LCD Digital 7-Day Timer ......................................................................................................... 35 Changing Language ........................................................................................................... 36 Changing the Date and Time ............................................................................................. 37 Manual On/Off .................................................................................................................. 38 Switching to Thermostatic Mode ...................................................................................... 39 Fan Mode .......................................................................................................................... 39 Pre-setting Heating Times ................................................................................................. 40 Installation Fuel Priming Feature ...................................................................................... 42 Checking Error Codes ........................................................................................................ 43 Resetting Digital Controller to Factory Settings ................................................................ 44 Maintenance............................................................................................................................... 45 Fault Codes: ................................................................................................................................ 46 Rheostat Control .................................................................................................................... 46 Timers .................................................................................................................................... 47

5 MV Heating UK Ltd Uses and Applications The heater works independently from the vehicle’s engine, but is best fitted using the vehicle’s battery and fuel tank. An auxiliary battery and/or fuel tank can be used if necessary. The heater will operate under normal conditions in most vehicles from industrial and machinery sectors to leisure craft like yachts and motor homes. The heater is best uses for heating various cabins and compartments, engine preheating and glass defrosting. It is not recommended for constant long-term operation for residential rooms, garages, holiday homes etc. Note: The most common faults that occur are generally down to poor fuel conditions due to dirty (or empty) fuel tanks or drops in voltage; particularly in older vehicles like live aboard narrowboats or used, commercial vehicles.

6 MV Heating UK Ltd Safety Information Follow the installation guidelines carefully to ensure the heater has the appropriate amount of clearance between surfaces, so as not to become a fire hazard and that the various parts of the heater that get hot, like the exhaust, are not exposed or contaminated by possible fuel and oil. Sufficient ventilation is required allowing proper air-flow to the heater. If the heater is to be installed in a box or compartment, please ensure an air vent is installed for this reason. The air must also be fresh and not contaminated by exhaust fumes or other polluted sources. Make sure that the air intakes and exhaust do not get blocked by other objects. Take care to ensure that the exhaust outlet is installed in a way that prevents fumes entering the vehicle or in the direction of the fresh air intake and ensure the use of heat shields where necessary to again avoid fire damage. If work is to be carried out on or around the heater, turn it off at least an hour before so, so that it is sufficiently cool enough to be handled. If necessary, wear safety gloves. The fuel line must not be routed through the passenger compartment or the driver’s cab in any vehicle. Ensure that they are also installed so that the exits are not at risk or in danger of becoming a possible fire hazard. Finally, take care and follow any and all precautions when installing the heater to minimize injuries to yourself and damage to the heater.

7 MV Heating UK Ltd Technical Data Heat Power (W) 4000 Fuel Diesel Output (W) 900 - 4000 Fuel Consumption (l/h) 0.11 - 0.51 Run Time Power Consumption (w) 8 - 40 Working Temperature -40°C - 20°C Weight (kg) 4.5 Variable Output Current Draw Position (Amps) PO1 0.4 PO2 0.6 PO3 0.8 PO4 1.3 PO5 1.4 PO6 1.9 PO7 2.4

8 MV Heating UK Ltd Kit Contents The kit includes everything necessary for installation. Figure I

9 MV Heating UK Ltd 1. Main heater unit 2. Main wiring harness 3. Control switch/timer 4. Fuel pump 5. Fuel standpipe 6. Fuel pipe 7. Fuel line connector hose clip 8. Fuel line connector 9. Fuel pump clamp 10. Anti-vibration mount 11. Combustion air pipe 12. Exhaust pipe 13. Combustion air pipe clamp 14. Exhaust pipe clamp 15. Combustion air pipe fixing clamp 16. Exhaust pipe fixing clamp 17. Grill 18. Outlet Cover 19. Temperature probe (optional) 20. Hose clip (optional) 21. Hot air ducting (optional) 22. Out vents (optional) MV Airo 4 Dimensions A: Minimum installation clearance for opening the lid and dismantling glow pin and E.C.U. B: Minimum installation clearance for the air intake 376 A B 30 75 90 130 133 25 24 55 7 140 105 44 17 80 150 325 140 105 44 17 80 150 325 DIMENSIONS: mm 376 A B 30 75 90 130 133 25 24 55 7 140 105 44 17 80 150 325 DIMENSIONS: mm

10 MV Heating UK Ltd Installation: Installation Positions Motorhome Figure II 1. In front of the passenger seat 2. Between the passenger and driver’s seat 3. Under the vehicle floor 4. Under the rear seat 5. Inside the boot Minivan Figure III 1. In front of the passenger seat 2. Between the passenger and driver’s seat 3. Under the vehicle floor 4. Under the rear seat 5. Inside the boot

11 MV Heating UK Ltd Crane Figure IV 1. In seat box 2. On the rear wall 3. In a protective case Lorry Figure V 1. In passenger footwell 2. On the cabin rear wall 3. Under the bed 4. In the tool box

12 MV Heating UK Ltd Installation Angle All positions suggested are examples. Other locations are possible so long as they correspond to the proper installation guidelines and requirements. 1. Heater air intake 2. Glow pin position 3. Direction of air flow Figure VI Figure VI shows the ideal installation position of the heater; with exhaust pointing downward. Depending on its location it can be tilted by 30° with the air flow and hot air outlet facing the bottom. It can also be tilted on its longitudinal axis by 90° so long as the glow pin position points upward. During usual operation the heater can deviate by 15° each way with vehicle movement without impaired function of the heater. 1 30° 3 90° 2 1

13 MV Heating UK Ltd Wiring Harness Connector Positions The main connector coming off the heater can be moved to the other side of the heater if necessary. In order to do you must first remove the air inlet grill by twisting it so it’s clear of its securing lip and then simply pull it off. Next, remove the top cover by lifting up the two front flaps near the air inlet. You can then lift out the entire innards of the heater (heat exchanger to fan motor and all) removing the cable from the rubber securing bush and rerouting it underneath the fan motor where it can then sit in the cut-out on the opposite side. Ensure the rubber bush is properly inserted and the heat exchanger is back securely in position, then simply replace the lid and grill back in position. Note: Ensure the bottom cover fits correctly inside the groove of the lid. Figure VII

14 MV Heating UK Ltd Installation: Mounting The chosen mounting surface should be flat and you will need to drill the appropriate size hole for the exhaust, combustion air inlet, fuel inlet and mounting bolts. It is a good idea to mount the heater on the supplied mounting bracket, particularly if the original mounting surface is thinner than 1.5mm. A. Mounting Gasket B. Mounting Plate Figure VII Note: The mounting plate shown in figure VII may differ in overall size and the circular flange may not be present, however the heater footprint will remain the same. 148 7.5 170 85 125 2 5 25 35.5 7.5 26 12 44 18 55 DIMENSIONS: MM A B

15 MV Heating UK Ltd Installation: Mounting (Cont’d) (Above) (Above) Securing the heater to the floor Securing the heater to the wall Figure VIII 1. Check that the fan wheel spins freely and 2. Ensure that the mounting surface is that there is sufficient clearance between the flat and smooth heater and the vehicle floor 3. The mounting gasket supplied must be fitted 4. The vehicle wall must be flat and smooth 5. Mounting bracket 6. M6 Washer 7. M6 Nut Figure VIII shows the mounting positions on a vehicle’s floor and wall. 1 4 6 5 3 2 1 4 3 6 5 2 1

16 MV Heating UK Ltd Installation: Ducting and Pipework Figure IX 1. Ducting AND/OR Grill 2. Air inlet on heater body 3. Hot air outlet on heater body 4. 80/90mm hose clip 5. 90mm APK ducting 6. Directional outlet vent Figure X A. Heater’s hot air outlet B. 90-80mm reducer (optional) C. 80/90mm hose clip D. 80mm APK ducting E. 90mm ‘Y’ branch F. 80mm directional outlet vent G. 80mm Open/close vent A B C D C E C C D C F D C G 1 2 3 4 4 5 6 4

17 MV Heating UK Ltd Installation: Ducting (Cont’d) Ducting Can be installed as shown on the previous page. Extra outlets can be installed to fit your own needs however you should ideally not fit more than the maximum of 4 outlets, to ensure you are receiving sufficient hot air output. Exhaust System Note: Do not work on the exhaust system unless the heater has been switched off for over an hour and wear safety gloves if necessary. All types of combustion produce high temperatures and toxic fumes and must be installed in accordance to these instructions. The flexible exhaust pipe can be shortened to no less than 20cm and should not exceed a length of 2m, depending on the installation parameters. Route the exhaust pipe from the heater to a suitable outlet, ensuring that is securely fitted to the heater using the clamp supplied in the kit. As the exhaust gets very hot during operation, it should be installed in such a way that will not cause damage to the vehicle. So ensure that it has sufficient clearance of heat sensitive parts; paying close attention to fuel lines (plastic and copper) and electrical components. Make sure that the outlet ends in open air and does not point in the direction of travel. The whole system should also point downwards and if necessary, a 5mm hole should be drilled near the bottom to drain off any condensation. You should also route the exhaust so that the fumes are not taken back in by the air intakes of the heater and ensure that the outlet does not get blocked by anything like road debris etc.

18 MV Heating UK Ltd Figure XI 1. Heater Body 2. 25mm Combustion Air Inlet 3. Combustion air inlet clamp 4. Combustion air pipe 5. Combustion air silencer OR end cap 6. 24mm Exhaust outlet 7. Exhaust clamp* 8. 24mm Exhaust pipe 9. Exhaust silencer 10. Exhaust end cap Combustion Air Intake Like the exhaust pipe the combustion air intake can be shortened to up to 20cm or lengthened to no more than 2m, again depending on installation conditions. Some models can also be fitted with a combustion air silencer to reduce the noise of the air intake; this is ultimately down to personal preference. In some situations, an air filter may be required (not included) to stop dust or debris making its way up the air pipe. *Not required on an application when the silencer is inbuilt, as part of the whole exhaust system 1 2 3 4 5 6 7 8 10 7 7 8 9

19 MV Heating UK Ltd Installation: Fuel Lines Note: When installing, priming, repairing fuel lines etc. there is always a risk of injuries due to flammable and toxic sources. Take all the necessary safety precautions when fitting any fuel line or fuel line parts. DO NOT: • Smoke • Use naked flames • Inhale fumes When working on or near any fuel lines or parts! DO: • Ensure the engine and heater are switched off before attempting any and all work on the fuel line installation or repair • Cut any fuel line with a sharp knife to ensure a clean cut free from crushes and burrs • Make sure the pipe from the fuel pump to the heater is on a gradual rise • Ensure fuel pipes are fastened safely to prevent noise rattle and securely fitted to prevent any damage • Route the fuel pipes so that vehicle vibration and movement will not have any lasting effects on the service life • Route the fuel line away from any and all heat sources. Ensure adequate clearing from heat sources if it cannot be avoided or use a suitable heat shield • Make sure all connectors are fastened securely to prevent dripping of fuel, particularly onto hot surfaces or electrical components.

20 MV Heating UK Ltd Fuel Line Connectors When connecting fuel pipes into rubber connectors always mount them flush and not on a bend to prevent air bubbles from forming in the fuel line as shown in Figure XII. Figure XII A fuel filter must be fitted for all diesel heaters. Make sure that it is installed the correct way according to fuel flow as shown in figure XIII. Note: Fuel filter, pipes and clamps should be replaced after 2 years. 1. Direction of fuel flow 2. Fuel Filter Figure XIII 0-90° 1 2 1 2

21 MV Heating UK Ltd Fuel Line Length and Order Figure XIV 1. Fuel tank 2. Fuel Standpipe 3. Fuel connector hose clip 4. Fuel Line 5. Rubber fuel line connector 6. Fuel Filter 7. Fuel pump with anti-vibration mount 8. Damper (optional) 9. Heater body Figure XIV shows how to install parts of the fuel line in the correct order. 2 3 4 5 6 7 8 9 1 2000-6800mm 500-1200mm

22 MV Heating UK Ltd Fuel Pump Angle for Installation Note: Fuel line is best installed straight/upward toward heater at fuel pump end. A damper is only necessary in kits that include one (larger kilowatt heaters). Always mount the fuel pump with the pressure side rising upward. The preferred position is shown in figure XV and should be between 15° and 35°. Figure XV A. Between 0° and 15° - Not acceptable B. Acceptable installation position: Between 15° and 35° C. Between 35° and 90° - Not acceptable 90° 0° B A C

23 MV Heating UK Ltd Fuel Tank Head A B C 1 2 3 1. Connection to heater body 2. Maximum fuel level 3. Minimum fuel level Suction height for fuel pump: A. 3000mm B. 1000mm (diesel) 500mm (petrol) C. 2000mm Figure XVI

24 MV Heating UK Ltd Fuel Standpipe A fuel standpipe (or suction pipe) will need to be installed in the vehicle’s fuel tank or an independent fuel tank depending on what the installation calls for. Sealant is not required to fit the standpipes. Depending on the standpipe provide in the kit you will need to install the standpipe in one of two ways. Standpipe 1: (Part No: AHZ-034) Figure XVII Usually supplied in Marine kits and supplied bent, this standpipe is installed like so: • Drill a hole in the top of the vehicle’s fuel tank Φ22 ± 0.2mm in size. Ensure it is smooth and clean of burrs • Remove the top nut and washers and bend the standpipe straight • Cut the standpipe down to size if necessary • Fit the standpipe by tilting it into position into the newly drilled hole • Place the rubber and metal washers back on top followed by the nut and tighten it securely on top

25 MV Heating UK Ltd Stand pipe 2: (Part No: AHZ-035) Figure XVIII Supplied mainly in vehicle kits, this standpipe is installed like so: • If possible; remove the sender unit from the vehicle’s fuel tank, this will make it easier to attach the nut securely back onto the standpipe • Drill a Φ6 ± 0.2mm hole into the sender unit • Remove the nut from the standpipe and feed it through the hole ensuring the rubber ‘o’ ring remains on the standpipe ‘head’ side • Replace the nut on the standpipe to secure it safely to the sender unit. • Replace the sender unit into the fuel tank. The bottom of the fuel standpipe should be 30-40mm from the bottom of the fuel tank to allow enough suction of fuel and at the same time not allow impurities and sediment to be drawn up the standpipe.

26 MV Heating UK Ltd Electrics: Components Make sure that all electrical components are arranged in the vehicle so that they function correctly under normal heater operations. Firstly, ensure that no wires are damaged in any way and avoid feeding them through areas that may cause damage to the loom or cause kinking, jamming or exposure to heat. If necessary, fit rubber grommets and plugs around the loom in areas that are not waterproof or may get damaged by road debris. Lastly make sure all connections are free of corrosion and all firmly connected. Control Switch & Timer To install the control switch, simply remove the rotary knob (it is quite stiff) and secure in a suitable location with the screw provided, then replace the knob back in the correct location. Alternatively, to fit the mini timer, simply fit the appropriate screw inside the hole located at the center of the timer. Both plug into the corresponding black and clear plugs on the loom. Note: Only one can be installed at a time. External Temperature Sensor Probe The external temperature sensor probe plugs into the corresponding blue and brown wired socket on the diagram and should ideally by mounting at shoulder height when sat down to ensure correct reading of the air temperature. It should not be mounted in such a way as to obstruct air flow; like up high, in the corner of the vehicle cabin or above heat sources.

27 MV Heating UK Ltd 11 13 14 2 7 6 4 3 8 9 1 16 5 12 10 Grey/Black Grey/Black Convector motor Blue/Purple Blue/Purple Brown Brown 1.5 15 Blue Black Grey Red Red/White Blue/White NTC10K External Temperature Sensor 1 2 3 4 X9 1 2 3 4 X10 Control Switch Push Button Remote Control Receiver Battery X7 Fuel Pump 1 2 3 4 X1 BM Fan Motor 2 1 X8 2 1 X2 GS 2 1 X3 FW 2 1 X4 UeF NTC50K PT1000 Flame/temperature Overheating sensor Glow Plug Brown Brown 0.5 Brown 1.0 Brown Brown Brown Brown 1.5 Brown Blue Green 1.0 Yellow White Red 2.5 Brown 2.5 Blue/White Blue/White Blue/White Blue Red 2.5 20A/10A Black Grey Red Red Black Grey Red/Yellow Red/Yellow Yellow Yellow Red Red/White Red/White Red Brown 2.0 White 2.0 Brown Green Blue Blue 0.5 Yellow 0.5 Red 0.5 Swim RST Controller X6 X5 Wiring Diagram

28 MV Heating UK Ltd To Timer Control 4 3 2 1 GRAY BLUE BLACK UNUSED 4 3 2 1 BLUE/WHITE RED/YELLOW BROWN UNUSED 4 3 2 1 UNUSED RED/YELLOW BROWN 4 3 2 1 GRAY BLUE BLACK To Rheostat Control RED RED/WHITE Control Connections Use a single screw to fix the timer control or rheostat control in place. They are best installed so that they can be seen and operated easily to identify working conditions and also for easy access. The black and clear plugs connect to the corresponding plugs on the loom (below). The remaining three-pin socket on the timer or rheostat control plugs into the remote control receiver if one is installed. An adaptor cable may be necessary. Timer Control Plug Figure XIX Rheostat Control Plug Figure XX

29 MV Heating UK Ltd Wiring Loom Plug for Timer and Rotary Control Figure XXI Any surplus wires should be kept in good condition and wrapped in electric tape to avoid short circuiting. 3 4 1 2 BLACK BLUE RED GRAY 3 4 1 2 BLUE/WHITE RED/WHITE RED/YELLOW BROWN To Main Wiring Harness

30 MV Heating UK Ltd Operation: Rheostat Control 1. Variable Output Button and Indictor Light 2. Temperature Button and Indicator Light 3. Fan Only (Cold Air) Button and Indicator Light 4. Control Knob 5. Fixing Screw Hole (Located underneath control knob) Figure XXIII The rheostat (or rotary) control works by twisting the control knob to the desired heat setting, and using the buttons listed to determine the heaters function. Variable output is simply high to low heat. The temperature button switches the heater to thermostatic mode (the heater will then switch to a cool-down cycle automatically once it has reached the selected temperature). The fan button only switches the fan on for cool air. °C 1 2 3 5 4

31 MV Heating UK Ltd Mini Timer 1. Display 2. Up Arrow Key 3. ‘P’ Icon 4. ‘Heating’ Icon 5. Down Arrow Key 6. Fixing Screw Hole Figure XXIV Functions • Adjustable thermostatic mode from 5°C to 35°C • Adjustable 7 step heating mode from <1kW to your heaters full output • 24-hour countdown set up time • Heating time from 15 minutes to 99 hours • Fault Information Codes 2 3 6 5 4 1

32 MV Heating UK Ltd Manual Start Up and Shut Down For immediate start-up press the heating icon to change the standby mode into the heating mode and the heater will start up immediately. To adjust the heating temperature in the heating mode simply press the up or down arrow keys. To turn the heater off manually, simply re-press the heating icon. Pre-setting Heating Time During heating mode, press the ‘P’ button and the down arrow simultaneously to start a countdown for the heating time. Adjust the hour with the arrow keys and confirm the time with the ‘P’ button. Then adjust the minute time again using the arrow keys and confirm again with the ‘P’ button. Note: The ‘dot’ in the upper right hand corner of the screen means the time was set successfully. To cancel press the heating icon. Pre-setting Starting and Heating Times Step 1: Press the ‘P’ key in the standby mode to enter the pre-set mode. Step 2: The time mode will appear. Adjust the hour first with the arrow keys and press the ‘P’ when complete to move onto the minutes. You can adjust the minutes in the same way, however ensure you press the ‘heating icon’ to confirm (the confirmation dot will appear in the upper right hand corner of the screen), then press the ‘P’ button to move onto the next step Step 3: Next stage is the temperature/output stage, the two can be adjusted by pressing the arrow keys simultaneously. The modes can then be adjusted with the arrow keys. Once adjusted; confirm the selection by pressing the ‘heating icon’ and move onto the next step by pressing the ‘P’ button.

33 MV Heating UK Ltd Step 4: Next step is adjusting the heating time. You can adjust this in the same way using the arrow keys. The hour first followed by the minutes, pressing the ‘heating icon’ again to confirm and the ‘P’ key for the final time to complete the task. Note: The ‘confirmation dot’ in the upper right hand corner of the screen must be present each time a step is adjusted to confirm it. Checking Temperature Pressing the ‘P’ and ‘up’ arrow button simultaneously whilst in the heating mode will display the air inlet temperature, or the remote temperature sensor probe’s temperature if one is fitted. Note: • The display will show 0°C if the temperature is lower than 0°C • The display will automatically revert to the heating mode if left idle for more than 5 seconds Converting to Thermostatic Mode Press both arrow keys to manually change from the heating mode to the thermostatic mode. Fault Information The fault display can be accessed by pressing the ‘P’ button during the heating mode. Six fault codes can be checked by pressing the arrow keys. To return to the heating mode, press the heating button. To eliminate the fault information; press the ‘P’ and heating buttons simultaneously.

34 MV Heating UK Ltd Remote Operation When the remote signal had been received, the timer will automatically switch to the thermostatic mode, with a default temperature of 25°C, the confirmation dot will appear in the meantime. To return back to the standby mode, press the heating icon. The confirmation dot will continue to appear until the remote shutdown signal has been received. Installation Fuel Priming Feature ATTENTION: • Not to be used in normal heater operation • Disconnect the fuel line from the heater first, to prevent flooding of the heater and place in a suitable receptacle. To enter the fuel priming mode, press and hold the ‘P’ icon for more than three seconds and let go to enter the next step. Next, press and hold the heating icon for more than three seconds and then let go. If done correctly the display will read ‘FUEL’ and the pump will begin to pump quickly. To stop; press the heating icon again. Press and hold the ‘P’ icon for more than three seconds to return to the standby mode.

35 MV Heating UK Ltd LCD Digital 7-Day Timer O K Mo Tu We Th Fr Sa Su P O K Mo Tu We Th Fr Sa Su P b 3 5 2 4 6 1 a e d c f O K Mo Tu We Th Fr Sa Su P b 3 5 2 4 6 1 a e d c f Figure XXV 1. LCD Screen a. Days of the week 2. Left Arrow Button b. Heating Symbol 3. Right Arrow Button c. Fan Symbol (later models only) 4. Power/Back Button d. ‘P’ (Timer) Symbol 5. OK Button e. Clock Symbol 6. Fixing Screw Hole f. Clock Face Functions: • 7 day timer, able to be programmed 3 times daily • 7 step variable output mode • Thermostatic mode from 05°C to 35°C • Adjustable cold air fan mode (on later versions)

36 MV Heating UK Ltd Changing Language The language should be set to English. However, if it isn’t or the control has been reset to default settings it will revert to Chinese. Please follow these steps to convert the language to English. 1. Turn on the control with the power button. Wait for the symbols to stop flashing, then press the power button again. 2. Navigate to the clock face symbol at the top of the control by using the arrow keys. When it is flashing press both arrow keys simultaneously. 3. P1 now appears. 4. Press ok and C1 will appear. 5. Keep pressing ok slowly until ‘02:oF’ appears. 6. Press any of the arrow keys until the screen reads ‘02:on’ 7. Keep pressing ok until back to the P1 menu screen 8. Press power button to return. The language will now be set to English. P 1 P 1 P 18:30 P 18:30 P 1 P 1 c 1 c 1 P 18:30 P 18:30 02:8H 02:8H 02:8f 02:8f 一 二 三 四 五 六 日 P Ih i 一 二 三 四 五 六 日 P Ih i P 1 P 18:30 P 1 c 1 P 18:30 02:8H 02:8f 一 二 三 四 五 六 日 P Ih i

37 MV Heating UK Ltd Changing the Date and Time 1. To change the date and time, navigate to the clock face symbol and press ok. 2. Select the day of the week it is first using the arrow keys, and pressing ok to confirm. 3. Select the hour using the arrow keys, and pressing ok to confirm. 4. Finally, select the minutes in the same way. 5. Once completed, the control will return to the home screen (displaying the correct time) NOTE: If the LCD digital timer is disconnected from the loom, the date and time will need to be re-entered. P 18:30 P 18:30 Mo Tu We Th Fr Sa Su P Mo Tu We Th Fr Sa Su P 18:30 Mo Tu We Th Fr Sa Su P 18:30 Mo P Mo P 12:30 Mo P 12:30 Mo P Mo P 12:05 Mo P 12:05 P 12:05 P 12:05 P 18:30 Mo Tu We Th Fr Sa Su P 18:30 Mo P 12:30 Mo P 12:05 P 12:05

38 MV Heating UK Ltd Manual On/Off 1. To switch the power on manually, navigate to the heating icon, and press ok 2. The heater will start automatically. 3. Use the arrow keys to adjust the output of the heater from high to low (07 to 01 respectively) 4. To switch the heater off, simply press the heater button to return to the home screen. P 18:30 P 18:30 P 18:30 P 18:30 P 18:30 0 1 0 1 0 1 0 1 07 07 07 07 P 18:30 P 18:30 0 1 07

39 MV Heating UK Ltd Switching to Thermostatic Mode To switch to thermostatic mode, turn the heater on manually, as stated in the previous step. 1. Once the heater is on, press and hold the ok button for three seconds and then release it. 2. The display should change to a temperature setting which can be adjusted from 05°C to 35°C using the arrow keys. 3. To adjust back to the variable output mode, simply press and hold the ok button again for 3 seconds and then release it. 4. To switch the heater off, press the power button to return to the home screen. Fan Mode The fan mode works in the same way as the manual on/off mode. Simply navigate across to the fan symbol and confirm with OK. The fan will then automatically switch on and its speed can be adjusted from high to low (07 to 01 respectively) using the arrow keys. To switch it off, press the power button. NOTE: Some earlier models will not have this function. 07 07 07 07 35 °c 35 °c 07 07 07 07 P 18:30 P 18:30 07 35 °c 07 P 18:30

40 MV Heating UK Ltd Pre-setting Heating Times The digital control can be used as a 7-Day timer, and is able to be preset to switch on up to three times a day. 1. Navigate to the ‘P’ symbol, and press OK. 2. Using the arrow keys select the number 1 (flashing) at the top of the screen, and press OK – Number 1 is the first heating time. 3. Using the arrow keys, select ‘ON’, as this will allow the heater to switch on after the presetting is finished. Press OK to confirm. 4. Select the length of time you want the heater to run for by using the arrow keys. – L800 represents 800 minutes. Run time can be selected from 50-990. Press OK to confirm. 5. Select the hour you wish the heater to start at by using the arrow keys and then pressing OK to confirm. P 18:30 P 18:30 P 18:30 P 18:30 P 18:30 123 P 18:30 123 8H 1 8H 1 P 8H 1 P P L800 P L800 1 P L800 1 P 06:30 P 06:30 1 P 06:30 1 Mo Tu We Th Fr Sa Su P 06:30 1 Mo Tu We Th Fr Sa Su P 06:30 1 Mo Tu We Th Fr Sa Su P 18:30 P 18:30 123 8H 1 P P L800 1 P 06:30 1 Mo Tu We Th Fr Sa Su

41 MV Heating UK Ltd 6. Select the minutes in the same way, and press OK to confirm. 7. The next step is choosing which day of the week you want the heater to run. Starting with Monday, use the arrow keys to change from ‘OFF’ to ‘ON’ and press OK to confirm. Continue this all the way through to Sunday. 8. The preset time should now be set. This will be indicated by the small, underlined number 1 at the top of the screen. 9. To set the second and third heating times, simply repeat all the steps but select 2 or 3 instead of 1 (see step 2.) to set those heating times. NOTE: To turn any of the preset times off without altering the set times, simply go through to step 3 and select ‘OFF’ using the arrow keys. Then repeatedly press OK until you have returned to the home screen. P 06:30 P 06:30 1 P 06:30 1 Mo Tu We Th Fr Sa Su P 06:30 1 Mo Tu We Th Fr Sa Su P 06:30 1 Mo Tu We Th Fr Sa Su 8H 1 8H 1 P 8H 1 P Mo Tu We Th Fr Sa Su 8H 1 P Mo Tu We Th Fr Sa Su 8H 1 P Mo Tu We Th Fr Sa Su P 18:30 P 18:30 1 P 18:30 1 P 18:30 P 18:30 123 P 18:30 123 P 18:30 123 P 06:30 1 Mo Tu We Th Fr Sa Su 8H 1 P Mo Tu We Th Fr Sa Su P 18:30 1 P 18:30 123

42 MV Heating UK Ltd Installation Fuel Priming Feature ATTENTION: • Not to be used in normal heater operation • Disconnect the fuel line from the heater first, to prevent flooding of the heater and place in a suitable receptacle. 1. To enter the fuel priming mode, navigate to the clock face using the arrow keys and press both arrow keys simultaneously. 2. P1 should appear on the screen. 3. Select P2 by pressing any arrow key, and confirm with OK. 4. The fuel pump will begin to rapidly pump the fuel. 5. It will automatically shut down after three minutes, or press any key to stop the pumping at any time, and return to the home screen. P 18:30 P 18:30 P 1 P 1 P2 P2 fuel fuel P 18:30 P 18:30 P 18:30 P 1 P2 fuel P 18:30

43 MV Heating UK Ltd Checking Error Codes Once an error code has been displayed, and the problem has been amended, follow these steps to reset it. 1. Check the error using the arrow keys. Exit by pressing either OK or the power button. 2. Press both arrow keys to display message ‘dEL’. 3. Press OK to delete all errors or power to go back. Once the display reads ‘IE00’ then no errors have been found. 4. Press OK or power to return. Ie 3 1 Ie 3 1 8e l 8e l 8e l 8e l Ie 00 Ie 00 P 18:30 P 18:30 Ie 3 1 8e l Ie 00 P 18:30

44 MV Heating UK Ltd Resetting Digital Controller to Factory Settings 1. Navigate to the clock face on the menu and simultaneously press both arrow buttons. 2. P1 should appears on the screen. 3. Using the left arrow key select ‘—01’, confirm by clicking the ‘OK’ button. 4. The control should now be reset to its original factory settings. P 18:30 P 18:30 P 1 P 1 0 1 0 1 P 18:30 P 18:30 一 二 三 四 五 六 日 P 18:30 一 二 三 四 五 六 日 P 18:30 P 1 0 1 P 18:30 一 二 三 四 五 六 日

45 MV Heating UK Ltd Maintenance Once the heater is installed, it should ideally be turned on a few times to remove any air trapped in the fuel lines. Also ensure there is no leaking from the lines and that all electric terminals fit securely together. You should also regularly: • Check the air inlet and outlet for any pollution or foreign objects blocking the outlets • Clean the externals of the heater • Check for corrosion or loose connections of circuits and connectors • Check the combustion air inlet and exhaust pipe for damage and/or clogs • Check the fuel line for leaks and kinks To ensure a long life of the heater it is advised that you run it for at least 10 minutes every month, to prevent malfunction of mechanical parts. After 10 years the heat exchanger, overheat sensor and exhaust should be replaced by a professional. If any welding is being attempted on the vehicle, please remove the positive power supply wire and earth it to protect the controller from any damage.

46 MV Heating UK Ltd Fault Codes: Rheostat Control When the ECU had discovered a fault, the rheostat control will flash a fault code. The control should therefore be ideally placed where it can be clearly seen and accessed. The faults will be displayed as short flashes followed by long flashes. To determine the code, you must count the number of long flashes. Number of Long Flashes Cause of Problem 1 Failure of second start 2 Termination of the third time of combustion 3 Voltage power out of specified range 4 Glow plug temperature increases slowly 5 Air heaters will not flash 5 times 6 Temperature sensor: Broken circuit or short-circuit 7 Fuel pump: Broken circuit or short-circuit 8 Fan motor: Broken circuit, short-circuit or clogged 9 Glow pin: Broken circuit or short-circuit 10 Overheated 11 Overheat sensor: Broken circuit or short-circuit 12 Control switch: Broken circuit or short-circuit

47 MV Heating UK Ltd Timers 1E-02 : Overheat – Check for obstruction or damaged ducting 1E-10 : Ignition failure – Check fuel supply, blocked supply or fuel pump 1E-30 : Voltage too high 1E-31 : Voltage too low – check battery or voltage drop in supply cable 1E-52 : Overheat sensor failure 1E-70 : Fuel pump open circuit or ECU failure 1E-80 : Air motor failure 1E-90 : Glow pin failure 1E-d3: Maintenance Reminder Thank you for purchasing the MV Airo 4.