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AIR-2D 12V/24V
AIR-8D 12V/24V
Manufacturer: AUTOTERM LLC
Paleju 72, Marupe, Latvia, LV-2167
Warranty Department
Technical Support
service@autoterm.com
www.autoterm.com
User's manual
with installation instructions
for AUTOTERM air heaters
warranty@autoterm.com
AIR-4D 12V/24V
AIR-9D 12V/24V
v06.2021
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Related Manuals for AUTOTERM AIR-2D 12V/24V
Summary of Contents for AUTOTERM AIR-2D 12V/24V
- Page 1 User’s manual with installation instructions for AUTOTERM air heaters AIR-2D 12V/24V AIR-4D 12V/24V AIR-8D 12V/24V AIR-9D 12V/24V Manufacturer: AUTOTERM LLC Paleju 72, Marupe, Latvia, LV-2167 Warranty Department warranty@autoterm.com Technical Support service@autoterm.com www.autoterm.com v06.2021...
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Page 2: Table Of Contents
Table of contents Introduction ..........................3 1 General instructions and operating principle ................4 2 Safety precautions ........................5 Retrofitting ..........................7 3 Main requirements of installation of assemblies and units of the heater ........8 3.1 Installation of the heater ......................9 3.2 Installation of the air intake pipe. -
Page 3: Introduction
Dear Customer! Thank you for choosing AUTOTERM AIR heater! We are doing everything to make this product meet your requirements, so its quality satisfies every customer. Introduction This manual is intended for organizations that specialize in installation and maintenance of air heaters AUTOTERM AIR (2D 12V/24V;... -
Page 4: General Instructions And Operating Principle
Installation of the heater and its components must be carried out by specialized organizations approved by AUTOTERM. Installation of the heater must be carried out only by certified specialists in accordance with the installation instructions. -
Page 5: Safety Precautions
Safety precautions • Do not use or install the heater in places, where flammable vapors or gases or large amounts of dust may form and accumulate. • Disable the heater, when the vehicle or vessel is being fueled. • Do not cover the heater with clothing, pieces of fabric and so on, and do not place such objects in front of the air intake pipe or inlet and output of the heated air. - Page 6 • In case of faults in the operation of the heater, contact specialized repair organizations authorized by AUTOTERM. If the consumer fails to follow the requirements above, the warranty of the heater becomes...
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Page 7: Retrofitting
Retrofitting For replacing different brand of heater for an AUTOTERM AIR heater, following things must to be checked first: Diameter of exhaust pipe. The AIR-2D and AIR-4D have an exhaust pipe with an internal diameter of 24mm and AIR- 8D and AIR-9D have an exhaust pipe with an internal diameter of 38mm. -
Page 8: Main Requirements Of Installation Of Assemblies And Units Of The Heater
Main requirements of installation of assemblies and units of the heater Heater can be installed both inside, and outside of the vehicle. Install the heater in a dry place that is protected from ingress of water and condensate, dirt, excessive vibrations and heat emissions, engine emissions or fuel or oil contamination. -
Page 9: Installation Of The Heater
3.1 Installation of the heater Install the heater, taking into consideration permissible operating position according to Fig.1a/b. Take into account the possible heel of the vessel, if installing on a maritime transport. When heater is positioned with exhaust pipe facing downwards and air inlet facing towards you, it is considered 0°... - Page 10 The distance from surrounding objects must be sufficient to ensure good ventilation. The distance from walls and partitions to the start of the inlet opening of the heater must be no less than 50mm for AIR-2D/4D and 100mm for AIR-8D/9D (see Fig.1b). The distance from walls, partitions to the start of the outlet opening of the heater must be no less than 150mm for AIR- 2D/4D and 250mm for AIR-8D/9D.
- Page 11 Fig. 2b - Leave some free space For heaters AUTOTERM AIR-2D and AIR-4D, holes in the body of the vehicle should be made as shown in Fig.3. Heater can be installed using mounting plates shown on Fig. 2. In this case studs provided with heater must be replaced with longer studs.
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Page 12: Installation Of The Air Intake Pipe
Cut the opening inside the vehicle body (in case the side wall/floor is not thicker than 3 mm) for AIR-8D heater installation as shown on Fig. 3. With the thickness of the vehicle body (floor) of more than 3mm, installation of the heater requires the following: 1. - Page 13 Air intake must not be installed in the movement direction of the vehicle/vessel. In cases when intake of clean air cannot be ensured, such as off-road and special purpose vehicles, please mount the dedicated AUTOTERM air filter (assy.2684) 3.2.1 Installation of the air intake pipe on maritime transport ...
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Page 14: Installation Of The Exhaust Pipe
Fig. 7 - Installation of the air intake pipe 1 – Air intake pipe; 4 – Gasket; 2 – Flange of the air intake pipe; 5 – Fastener assembly; 3 – Hull of the vessel; 6 – Clamp. 3.3 Installation of the exhaust pipe. When installing the exhaust pipe, take into consideration Heater high temperature (up to 500°С) of the exhaust pipe when heater... - Page 15 In absence of the shield, air will be blown back into the Cut 15 mm exhaust pipe. This leads to increased heater shooting and Shield impairs heat capacity. Exhaust gases must be removed outside of the vehicle. Heater is provided with airtight exhaust silencer. This mean it can be mounted in small vessels and confined spaces.
- Page 16 The exhaust pipe needs additional insulation at every connection of the metal hose, for example, using a heat resistant tape or sealant, to prevent any leaks of exhaust gases at connection points. Additional heat insulation must be installed at places where the exhaust pipe goes through the floor or the side wall of the vehicle (Fig.
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Page 17: Installation Of The Fuel System
3.4 Installation of the fuel system. Do not operate the heater using biofuel. Use only diesel fuel standard EN590, depending on the ambient temperature. Act as instructed on Fig.14 and Fig.17 to install the fuel system. The fuel pump and the fuel supply line must be protected from heating. - Page 18 Fuel is taken directly from the fuel tank of the vehicle or vessel or an additional tank. Drill a hole Ø16mm in the fuel tank to install a fuel suction hose. When drilling the hole in the fuel tank, follow safety precautions that should be observed when working with a transport, which is filled with fuel or explosive substance.
- Page 19 3.4.3 – Fuel suction from the fuel tank of the vehicle. Fuel is taken from a fuel line of the vehicle using a T-piece (see Fig.17). This method can be used if there is no pressure in the fuel line. If vehicle is equipped with a low-pressure fuel pump in the fuel tank, then those fuel lines cannot be used, fuel suction hose must be installed instead.
- Page 20 a=70 cm Heater b=1,5 m Fuel line Minimal level of fuel Recommended level for 1 – Additional fuel tank; 4 – Coupler; installation of fuel pump 2 – Fuel tank of the vehicle; 5 – Fuel pump 3 – Fuel suction hose; Fig.
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Page 21: Installation Of Wiring Of The Heater
3.4.5 Installation of the electrical harness of the fuel pump. If the length of the wiring harness of the fuel pump needs to be shortened, it is allowed to remove the unnecessary portion from the middle of the harness. The connection point must be insulated. -
Page 22: Installation Of The Temperature Sensor (Optional)
3.6 Installation of the temperature sensor (optional). The temperature sensor (Fig.23) measures air temperature in the area of its installation and allows running the heater in a set temperature mode. Install the sensor in a convenient (appropriate) place in the heated room. The operation of the heater with a temperature sensor is described in the operation manual of the control panel. -
Page 23: Testing Of The Heater After Installation And First Launch
Testing of the heater after installation and first launch The heater can be put in operation only when the system has been fully installed! After installation, check: tightening of clamps; voltage of the battery; reliability of attachment of electric contacts of harnesses and assemblies of the heater. Fill the fuel main line with fuel, preferably using a fuel-priming device, which can be ordered from official dealers. -
Page 24: Automatic Control Features
4.1 Automatic Control Features if for some reason the heater did not start, the start-up process will be automatically repeated. After two failed attempts the heater will be switched off; if during the heater's operation burning is interrupted, the heater automatically re-starts. Restarts after consecutive flameouts are performed up to three times;... - Page 25 Air intake from inner rooms. In this case, heated air is taken from inner rooms. The advantage of such option is fast heating due to better use of heat. However, this operation does not lower humidity, and the air in the heated spaces is not renewed.
- Page 26 The heater is supplied with inlet and outlet grilles already installed. In such a case, the heater can be used for heating of the room/cabin, in which it is installed. If several rooms/cabins need to be heated, lay air ducts along the perimeter of the vessel. Replace the inlet and/or outlet grille on the heater to connect the air duct to it (only for AIR-2D and AIR-4D).
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Page 27: Recommendations
25A fuses are good. If you were unable to find the root cause of the fault, contact your nearest dealer or service centre, or the website www.autoterm.com. WARNING! 1 When starting the heater for the first time after installation, it is preferable to fill the main fuel line up to the input nozzle of the heater using a priming device. - Page 28 For the correct operation, the heater needs regular (annual) maintenance. Stop the heater and let all system parts cool down before any works: check for corrosion on electrical plugs and contacts (with battery disconnected); check sealing of fuel hoses; check sealing and corrosion in the system of exhaust gases; check whether air intake pipes and air ducts are clean;...
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Page 29: Malfunctions
Malfunctions. Fault PU-5 Description Fault Cause Recommended Solutions code blinks Check the intake and outlet of the heating unit for unobstructed entry and exit of heated air. The sensor sends a signal to shut down the Check the integrity of the fan and its performance. Overheating heater. - Page 30 Fault PU-5 Description Fault Cause Recommended Solutions code blinks During the purge time, Check the intake and output of the heater for unobstructed temperature sensor During 5 min purge before start-up, entry and exit of air. was not cooled down. temperature sensor Check the integrity of the fan and its operation.
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Page 31: Warranty Terms
Failure of the heater due to combustion chamber impurity. While warranty is provided to the “original end-user”, it is to be administered and serviced through an authorized AUTOTERM dealer in accordance with the heaters warranty terms. All AUTOTERM certified services are listed on www.autoterm.com/warranty... -
Page 32: Annex 1: Basic Parameters & Specifications Of Heaters
Annex 1: Basic parameters & specifications of heaters 1. Basic parameters of the heater AIR-2D Models Characteristics AIR 2D 12V AIR 2D 24V Rated voltage diesel fuel EN590, Fuel depending on the ambient temperature 0.8 – 2 kW Heating output 34 –... - Page 33 3. Basic parameters of the heater AIR-8D Models Characteristics AIR 8D 12V AIR 8D 24V Rated voltage diesel fuel EN590, depending on the ambient temperature Fuel 3.2 – 6 kW 3.2 – 7.5 kW Heating output 70 – 336 m Hot air flow 0.42 –...
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Page 34: Annex 2: Connection Diagrams Of Heaters
Annex 2: Connection diagrams of heaters 1. Connection diagram of the heater AIR-2D and AIR-4D 1 - Harness for control panel 13 - Fuel pump 2 - Connection to external temp. senor 14 - Fuel line 3 - Connection to control panel 15 - Fuel pickup 4 - Power supply harness 16 - Mounting kit for fuel system... - Page 35 2. Connection diagram of the heater AIR-8D 1 - Harness for control panel 14 - Fuel line 2 - Connection to modem 15 - Mounting kit of fuel system 3 - Connection to external temp. senor 16 - Fuel pump 4 - Power supply harness 17 - Fuel tank 5 - Connection to control panel...
- Page 36 3. Connection diagram of the heater AIR-9D 1 - External temp. sensor connection 11 - Mounting kit of harnesses 2 - Harness for control panel 12 - Fuel tank 3 - Mounting kit for fuel tank 13 - Mounting kit for fuel system 4 - Heater 14 - Fuel line 5 - Fuel pump harness...
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Page 37: Annex 3: Size And Dimensions Of Heaters
Annex 3: Size and dimensions of heaters 1. Size and dimensions of the heater AIR-2D 1 - Air intake for heating Ø68mm 5 – Output of exhaust gases 2 - Output of the heated air Ø68mm 6 – Minimal distance from wall/objects at air intake 50mm 3 - Air intake for combustion 7 –... - Page 38 3. Size and dimensions of the heater AIR-8D 1 - Air intake for heating Ø100mm 5 – Output of exhaust gases 2 - Output of the heated air Ø160mm 6 – Minimal distance from wall/objects at air intake 100mm 3 - Air intake for combustion 7 –...
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Page 39: Annex 4: Electrical Wiring Diagrams Of Heaters
Annex 4: Electrical wiring diagrams of heaters Heater can also be started with vehicle alarm wires in two ways: • If brown and white wires are connected to an impulse relay (with an impulse between 1- 3 seconds), heater will work on previously set work mode for two hours. •... - Page 40 2. Electrical wiring diagram for the heater AIR-4D Heater Circuit Control unit brown Power Connection of the regulation white Circuit control panel On/off Flame black Aluminium green LED/ indicator Output data Chrome blue General supply Circuit white-black/ Input data Power supply brown Vehicle Power...
- Page 41 3. Electrical wiring diagram for the heater AIR-8D Heater Control unit Circuit brown Power Connection of the regulation white Circuit control panel On/off Flame black Aluminium green LED/ indicator Output data Chrome blue General supply Circuit white-black/ brown Input data Power Power supply Vehicle...
- Page 42 4. Electrical wiring diagram for the heater AIR-9D Heater Control panel harness Control unit Circuit Power brown regulation Circuit Circuit Control white Flame red/brow black On/off Aluminium supply panel indicator blue/yellow green LED/ General Chrome Output data white Output data blue General green...
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Questions and answers
I need a step by step on how to operate this autoterm diesel heater please.
To operate the AUTOTERM AIR-2D 12V/24V diesel heater:
1. Power Supply: Ensure the heater is connected to a battery (vehicle or separate) and fuel is supplied via a separate pump from the main or additional fuel tank.
2. Control Panel Use: Use the control panel to turn the heater on and set the desired temperature.
3. Temperature Regulation: If a temperature sensor is present (built-in or installed), the heater automatically compares room temperature with the set temperature and adjusts heating capacity accordingly.
4. Outlet Channels: Warm air is distributed to cabins or desired areas through outlet channels.
5. Installation and Safety: Ensure installation is done by certified specialists following AUTOTERM’s instructions to avoid fire or property damage.
Follow all safety precautions during operation.
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