Related Manuals for MV Heating Combi Heater
Summary of Contents for MV Heating Combi Heater
- Page 1 MV Combi Heater MV 4 & 2 ATER EATER NSTRUCTION ANUAL 1.00 MV Heating UK Ltd Unit 6 Second Avenue Business Park Millbrook Southampton SO15 0LP 6kW Combi Heater MV Heating UK LTD +44 (0)2380 522345...
- Page 2 Thank you for purchasing the MV Combi diesel powered heater. This instruction book describes the structures, working principles, installation and operation of the MV Combi Heater. For correct use of the heater, please read this instruction book carefully before installation and use. The instruction book should be saved in a convenient place for reference later.
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Page 3: Table Of Contents
Installing a 12mm/½” CTS adaptor .............. 20 Non-Return Valve ..................21 Installing a Pressure Relief/Drain Valve ............22 Connecting the Water Container ..............24 Connecting the Cold Water Line ..............25 Connecting the Hot Water Line ..............25 MV Heating UK Ltd... - Page 4 220V Overheat Protection ................37 Final Checks ...................... 38 Water filling ....................38 Turning off the Heater ................. 39 Drainage of the Heater ................39 Maintenance/Repair/Cleaning ..............40 Fault Information ..................... 41 Fault Codes ....................... 42 MV Heating UK Ltd...
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Page 5: Introduction
+44 (0)23 8052 2345 Introduction The MV Combi Heater is an integrated air and water heater (hereinafter referred to as the Heater). The heater provides domestic hot water and hot air for heating cabins etc. The heater can use the hot air and hot water function simultaneously, or hot water only if hot water is required. -
Page 6: Technical Data
+44 (0)23 8052 2345 Technical data MV Combi Heater Technical Data Rated Voltage DC12V 10.5 ～ 16V Operating Range Short-Term Maximum Power Consumption 8-10A Average Power Consumption 1.8 - 4A Fuel Diesel Diesel Thermal Power 2000 4000 Diesel Consumption (ml/h) Quiescent Current Warm Air Supply (m³/h) -
Page 7: Safety Information
There may be some smoke on startup, this can be caused by low voltage, or after a long period of not being used. When cleaning the vehicle, be careful to not spray water into the exhaust outlet. Do not let children operate the heater. MV Heating UK Ltd... -
Page 8: Obligations Of The Owner/Operator
Warranties will not be covered in the event of frost damage. MV Heating will not be liable if any modifications are made to the heater or its accessories, or if specifications from this manual are ignored. Notes on manual: The following information will refer to the exploded diagrams, or figures as (F:P), where ‘F’... -
Page 9: Installation
3. Exhaust Out 4. Water Pipes 5. Hot Air Out Pipes Figure 1 gives a rough example of how an installation in a motorhome may be prepared. Installation positions will vary depending on vehicle, interior space etc. MV Heating UK Ltd... -
Page 10: Working Principle
4. Hot Water Outlet 12. Burner (Inside) 5. Fuel Inlet 13. Heat Exchanger (Inside) 6. Hot Air Outlet 14. Electrical Control panel 7. Fresh Air Inlet 15.Electric Warm Air Pipe (Inside) 8. Exhaust Port 16. Overheat Sensor (Inside) MV Heating UK Ltd... -
Page 11: Pre-Planning
300mm away from any living areas, ventilation openings, or window openings. The exhaust outlet should not be installed beneath a window that can be opened, or near anywhere that the air can be recirculated by the heater. MV Heating UK Ltd... -
Page 12: Installation Positions
+44 (0)23 8052 2345 Installation Positions 540* Figure 3 350* 180* 500* Figure 4 MV Heating UK Ltd... -
Page 13: Exhaust And Combustion Air Intake Installation
However, it should exit away from any living areas, windows etc. and be a minimum of 300mm away from any ventilation areas and a minimum of 500mm away from the diesel tank, or any associated diesel parts. Figure 5 MV Heating UK Ltd... - Page 14 Max. 100cm Figure 6 The exhaust outlet must be installed at least 300mm away from any living areas, ventilation openings, or window openings. The exhaust outlet should not be installed beneath a window that can be opened. MV Heating UK Ltd...
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Page 15: Installation Of Exhaust Cowl
(7:10) onto the outlet. Slide the larger combustion air intake pipe (7:3) over the inlet and outlets and secure with hose clamps (7:4). The intake and exhaust pipes can be fixed to the side wall with the plastic p-clips (7:4). MV Heating UK Ltd... -
Page 16: Fresh Air In
(65mm OD). If there is a lack of space and the warm air ducting must be bent directly behind the warm air outlet of the heater, a 90° elbow may be used between the warm air outlet and the warm air ducting. MV Heating UK Ltd... - Page 17 Make sure the hot air ducting is firmly inserted into the hot air connector and secured with a hose clip. • Ensure that all four hot air outlets are connected to maximise heat distribution. • The ducting should not be reduced or obstructed in anyway. MV Heating UK Ltd...
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Page 18: Water Installation
Elbow fitting – push-fit 12 mm 6. Hot Water Connection Elbow fitting (with aeration valve) – push-fit 12mm 7. Venting Hose, external diameter 11mm 8. Fresh Water Tank 9. Water Pump (not included) 10. Water Connection to the Fresh Water Tank MV Heating UK Ltd... -
Page 19: Advice
You must install a non-return valve (11:3) between the outlet to the cold water tap and the pressure relief/drain valve to prevent backflow. Install the water lines so as to ensure that all connected components function as MV Heating UK Ltd... -
Page 20: Laying Water Lines
Laying Water Lines • Connect built-in components of the water system to the water lines; see example diagram, figure 11. • Regarding ½” CTS water lines for connections to 12mm push-fit system: Install an adaptor; see figure 12 MV Heating UK Ltd... -
Page 21: Installing A 12Mm/½" Cts Adaptor
An adaptor must be installed at every junction between a 12mm push fit system and a ½” CTS tube. 1" (25mm) Figure 12 1. 12mm to ½” CTS tube Adaptor 2. ½” CTS tube 3. Hose Clamp MV Heating UK Ltd... -
Page 22: Non-Return Valve
• Install the non-return valve in the cold-water line. • Insert the non-return valve in the proper direction. Figure 13 shows an example of a non-return valve, with arrow pertaining to direction of water flow Figure 13 MV Heating UK Ltd... -
Page 23: Installing A Pressure Relief/Drain Valve
3. Install the drainage hose (14:3) in a straight line to outdoors, where it must terminate in a splash-proof position. Install a splash guard, if necessary. 4. Use 2 screws (14:3) to secure the pressure relief/drain valve MV Heating UK Ltd... - Page 24 8. Cold water line inlet 1/2 in. CTS PEX tube 9. 1/2 in. x 1/2 in. x 1/2 in. PEX tee 10. Cold water line outlet 1/2 in. CTS PEX tube 11. Crimp ring or clamp MV Heating UK Ltd...
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Page 25: Connecting The Water Container
3. Hot water connection elbow fitting (with aeration valve; push-fit 12 mm: red) 3a. Aeration valve hose nozzle 4. 12mm to ½” CTS adaptor 5. Hot water line – ½” CTS 6. Hose clamp (not included in scope of supply) 7. Venting hose, external diameter 7/16” (11mm) MV Heating UK Ltd... -
Page 26: Connecting The Cold Water Line
3. Angle the venting hose (15:7) downward, ensuring there are no kinks. – Minimum radius of curve: 1 1/2” (40mm). 4. Make sure that the venting hose extends only 0.8” (20mm) beneath the motorhome’s undercarriage. Cut the end of the hose at a 45-degree angle (Figure 15). MV Heating UK Ltd... -
Page 27: Final Checks
• Pull on all the water connections to ensure that they are securely connected. • Check all water connections for leaks. – Repair leaks as needed. – Repeat check for leaks and take any necessary steps to repair the leaks at all water connections MV Heating UK Ltd... -
Page 28: Temperature Sensor Probe
Run the end of the cable Figure 16 with the plug to the Combi heater. If necessary, the connector cable can be extended using cables (2 x AWG 20 (2 x 0.5 mm²)). However, the overall length must not exceed 33ft (10m). -
Page 29: Electrical Connections
• Connector cables and lines must be securely fastened; they must not become loose or be disconnected due to vibration. • Electric lines, switching equipment, and control units for the Combi heater must be arranged in such a way in the vehicle that they will function flawlessly under normal operating conditions. -
Page 30: Connections
12V + Figure 17 1. Connection cover 2. Input voltage + 12V 3. Input Voltage Ground 4. Main Fuse (20A) 5. Wire Bridge 6. Temperature Probe 7 & 8. Control Switch 9. Fuel Pump MV Heating UK Ltd... -
Page 31: Setting Up The 12V Connection
LED indicator will not work. To ensure the best power supply, the Heater must be connected to the on-board power supply (or battery) protected by fuse (10A) with 2×2.5mm2 cable (2×4mm2 if the length exceeds 6m). MV Heating UK Ltd... -
Page 32: Connecting The Room Temperature Sensor
Use a type G standard plug (not included) to connect the heater to the power supply. Ensure it is connected with a 20A fuse, and properly grounded. 230V lines must be kept completely separate from 12V lines. Secure all lines with clamps. MV Heating UK Ltd... -
Page 33: Installation Of Fuel Lines
Always fit the fuel pump on the anti-vibration mount securely onto the vehicle. Ensure the outlet of the fuel pump tilts upward. The correct angle is shown in figure 17. MV Heating UK Ltd... - Page 34 4. Fuel Pump and Damper Fuel Pump Angle & Suction Height A. 3000mm B. 500mm C. 2000m D. Not acceptable E. Acceptable (between 15-35°) F. Not acceptable Figure 17 Figure XVIII shows the ideal angle to mount the fuel pump MV Heating UK Ltd...
- Page 35 The bottom of the suction pipe should be about 30-40mm from the bottom of the fuel tank so as to avoid sucking impurities or sediment from the bottom of the fuel tank. MV Heating UK Ltd...
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Page 36: Fuel Standpipe
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 MV Heating UK Ltd... - Page 37 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. MV Heating UK Ltd...
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Page 38: Operational Precautions
220V Overheat Protection The electrical heating function has a mechanical overheat protection switch. If the 12V power supply is interrupted during or after the heating process, the radiating heat of the Heater will trigger the overheat protection switch. MV Heating UK Ltd... -
Page 39: Final Checks
In case of frost, frozen residual water can prevent filling. The water heater only needs to be turned on for a while to defrost (no more than 2 minutes). The frozen part can be thawed after heating the inside of the water heater. MV Heating UK Ltd... -
Page 40: Turning Off The Heater
▪ Turn on the hot tap in the kitchen and bathroom. ▪ To check the outflow of water, place a suitable container under the drain tank of the safety/drain valve (installment by users; used to MV Heating UK Ltd... -
Page 41: Maintenance/Repair/Cleaning
The device can only be repaired and cleaned by professionals. ▪ Maintenance, repair and cleaning cannot be done by children. ▪ Flush all hot/cold water hoses thoroughly before using the new equipment or after the equipment has not been used for a period of time. MV Heating UK Ltd... -
Page 42: Fault Information
LCD switch lead is properly connected with the main machine. Faults generated by the Heater will be displayed by the fault code on the LCD switch. Faults can be checked and eliminated using the table below. MV Heating UK Ltd... -
Page 43: Fault Codes
Water temperature overheat switch protection B) Check the water temperature overheat switch A) Check whether the air outlet is blocked Continuos overheat fault B) Check the water temperature sensor C) Check heater sensor Communication failure Check the connection cable MV Heating UK Ltd... - Page 44 Air motor faiure to start B) Check air motor Air motor speed is too low Check air motor Window opening alarm Check window switch connection cable Low voltage alarm Recommend charging 220V no connection Check AC 220V power supplu system MV Heating UK Ltd...
- Page 45 +44 (0)23 8052 2345 Notes ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………………….. MV Heating UK Ltd...
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