MV Heating MV Airo 2 User manual

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MV Heating UK Ltd
MV Airo 2
MV Airo 2
Air Heater
Instruction Manual
Ed. 3.01
MV Heating UK Ltd
Unit 6
Second Avenue Business Park
Millbrook
Southampton
SO15 0LP

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MV Heating UK Ltd
Preface
Thank you for purchasing the MV Airo 2 Air heater. This instruction book
describes the structures, working principles, installation and operation of the
MV Airo 2. 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.
Note
•This instruction book is subject to revision without notice, but the
instruction book is in conformity to the purchased product.
•Our effort is to explain all questions you may have. If you have any
doubts or find anything incorrect in this manual, please contact us
directly.
•Check the heater for any damage when unpacking and contact the
dealer immediately if anything is found.
•If any troubles arise during application, please contact MV Heating or
other customer service stations authorized by this company. We shall
do our best to provide service to you.
Comply with the operation manual for installation and use, to ensure
prolonged and reliable operation.

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MV Heating UK Ltd
Contents
Introduction .......................................................................................................5
Technical Data....................................................................................................6
MV Airo 2 Internal Structure......................................................................7
Structures and Working Principles.............................................................8
Case Assembly............................................................................................9
Installation .......................................................................................................10
Installation of the Main Heater Body.......................................................12
Air Inlet & Outlet......................................................................................14
Additional Ducting (Optional) ..................................................................15
Installation of Combustion Air Pipe and Exhaust.....................................16
Fuel Lines......................................................................................................18
Fuel Standpipe .............................................................................................21
MV Airo2 Wiring Diagram –Brushless Version............................................23
Timer and Rheostat Control Plugs ...........................................................25
Wiring Loom Plug for Timer and Rotary Control .....................................26
Circuit Interfaces......................................................................................27
Operation.........................................................................................................28
Rheostat Control..........................................................................................28
Mini Timer....................................................................................................29
Manual Start Up and Shut Down .............................................................30
Pre-setting Heating Time .........................................................................30

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MV Heating UK Ltd
Pre-setting Starting and Heating Times ...................................................30
Checking Temperature.............................................................................31
Converting to Thermostatic Mode...........................................................31
Fault Information .....................................................................................31
Remote Operation ...................................................................................32
Installation Fuel Priming Feature.............................................................32
LCD Digital 7-Day Timer ...............................................................................33
Changing Language ..................................................................................34
Changing the Date and Time....................................................................35
Manual On/Off.........................................................................................36
Switching to Thermostatic Mode.............................................................37
Fan Mode .................................................................................................37
Pre-setting Heating Times........................................................................38
Installation Fuel Priming Feature.............................................................40
Checking Error Codes ...............................................................................41
Resetting Digital Controller to Factory Settings.......................................42
Maintenance ....................................................................................................43
Fault Codes.......................................................................................................44
Rheostat Control..........................................................................................44
Fault Codes.......................................................... Error! Bookmark not defined.
Timers...........................................................................................................45

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MV Heating UK Ltd
Introduction
The main equipment of the MV Airo 2 air heater (hereinafter referred to as
‘the heater’) is a small fuel furnace controlled by a single-chip micro-
processor. Its furnace body (the heat exchanger) is located in the hood
shaped case, which serves as an independent air passage. Cold air is drawn
into the air passage by the fan and blown out when it becomes hot.
The heat can be supplied by the heater to the driver’s cab and passenger’s
compartment independently from the engine. The schematic diagram is
shown in Fig I.
The heater is fully automatically controlled. It features a compact structure,
easy installation, low running costs, easy maintenance and is safe and
reliable.
1. Control switch
2. Heater Body
3. Fuel Pump
4. Wiring Harness
5. Vehicle’s Battery
6. Vehicle’s Fuel Tank
7. Exhaust Pipe
8. Combustion Air
Intake
Figure I
1
25
6
3 4
8
7

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MV Heating UK Ltd
Technical Data
Output (w)
2000
Fuel
Petrol
Diesel
Voltage
12/24V
12/24V
Fuel Consumption (l/h)
0.14 - 0.27
0.12 - 0.24
Power Consumption
14 - 29
Working Temperature
-40°C - 20°C
Weight (KG)
2.6
Dimensions (mm)
323x120x121
Variable Output
Current Draw
Position
(Amps)
PO1
0.9
PO2
1.1
PO3
1.2
PO4
1.3
PO5
1.5
PO6
1.7
PO7
1.9

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MV Heating UK Ltd
MV Airo 2 Internal Structure
Figure II
1. Heat exchanger 2. Gasket 1 (4 hole)
3. Combustion chamber 4. Burner Assembly
5. Gasket 2 (5 hole) 6. Air Motor Assembly
7. Insulating bush 8. ECU
9. Air Fan Wheel 10. Glow Pin
11. Overheat Sensor

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MV Heating UK Ltd
The heat exchanger is made of die-cast aluminium, with radiating fins around
the rear. The combustion chamber fits inside the inner cavity of the heat
exchanger. The burner assembly and glow pin, fit into the end of the
combustion chamber. Fuel comes to the burner assembly through the fuel
pipe and is ignited by the glow pin. The flame is passed up the combustion
chamber and returns between the inner walls of the heat exchanger and
discharged through the exhaust outlet vent to the outside of the vehicle or
boat.
The air supporting combustion of the furnace, comes from the combustion air
inlet port and is sent down the combustion pipe by the combustion
supporting air blades of the fan motor.
Structures and Working Principles
The structure of the main heater is shown in Fig. III
1. Heat Exchanger 2. Heater Case
3. Insulating Bush
Figure III
321

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MV Heating UK Ltd
Case Assembly
Figure IV
12. Junction box cover 13. Top Case
14. Hot air outlet 15. Inlet Cover
16. Outlet Cover 17. Grill

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MV Heating UK Ltd
Installation
The kit includes everything necessary for installation.