Isotherm BI 41 Installation And Operation Manual

BI 41
Installation and operation manual
Einbau- und Bedienungsanleitung
Installations- och bruksanvisning
Indel Webasto Marine S.r.l. Zona Artigianale IT-61019 S. Agata Feltria (PU), Italy Te l: +39 0541 848 030 Fax: +39 0541 848 563 E-mail: info@indelwebastomarine.com www.indelwebastomarine.com
Notes:
Isotherm built-in box 41 litres
General
Specially designed to operate in tough marine environments, Isotherm fridge and freezer boxes are outstanding in both performance and reliability. Fitted with a fully hermetic, leak-free compressor, they offer the lowest possible power consumption and noise level. All models are easy to install. BI41 is used in the fi rst hand as a refrigeration box, but can reach temperatures down to -10°C/14°F. The box can stand an angle of heel up to 30°, for a short time even more. To ensure that your Isotherm box operates as effi ciently as possible, please follow these general guidelines:
* Unnecessary opening of the lid will increase power consumption. * Good ventilation of the compressor and condenser unit will reduce power consumption. * The electrical system should be in good
condition. Inspect batteries and charging
level regularly. Always use a separate starter
battery for the engine. Follow carefully the
guidelines regarding electrical cable areas and
fuse placements. * Keep the inside of the box clean and dry. Keep the lid slightly open, to air the box when leaving the boat for any length of time. * Keep the drainage in the box closed during normal operation, if such is mounted.
Operation
Te mperature setting
The boxes are fi tted with a manually operated, infi nitely-variable thermostat to operate the box within refrigeration temperatures. This is turned clockwise to reduce temperature and anti-clockwise to increase temperature. Turn the thermostat knob to the off-position, maximum anti-clockwise, to stop the unit working. The thermostat knob is placed inside the box.
Defrosting Defrosting shall be made when the frost layer is more than 3-4 mm thick. Turn off the unit with the thermostat put into off-position. Store the foodstuff and the bottles as cold as possible during the defrosting. Do not use sharp metal objects to remove frost or ice. Do not re­start until the box is completely defrosted and dried. Do not forget to close the drainage if such is mounted,
Maintenance The Isotherm boxes have a fully hermetic closed cooling system and do not require any maintenance or refi lling of refrigerant. The compressor is of domestic type and has a very higheffi ciency and an outstanding life-time. The box shall be left in the boat during the winter. (If the temperature is below freezing point, the compressor will not start).
The maintenance is reduced to periodically, not less than a year, cleaning of the condenser from dust, on air cooled units. Use a soft brush and no hard objects. Keep the inside of the box. Use lukewarm water and a mild cleaner for the inside. Put the lid, during not in operation periods, in a slightly open ventilation position. See also the Isotherm SP and Magnum installation instructions.
Battery voltage sensor
To protect the batteries from becoming completely discharged, a battery voltage sensor switches off the
compressor automatically at the following levels:
System voltage Cut-out Cut-in
12 9.6 alt. 10.4 10.9 alt. 11.7 24 21.3 alt. 22.8 22.7 alt. 24.2
Safety instructions and environment
- When connected to shore power, ensure that the power supply is equipped with an automatic earth leak switch. Danger!
- Never touch bare electric wiring connected to the mains supply. Danger!
- Never connect a battery charger direct to the refrigeration system. A battery charger must be connected to the battery.
- In addition to acid, a newly-charged battery contains explosive gas. Danger!
- Never open the refrigerant circuit except by the re­ operable quick couplings which are of self sealing types and designed for this purpose.
- Never cover up the ventilation system for the compressor unit.
- The refrigeration unit must be disposed by a refrigeration specialist for correct recycling of components and care taking of the refrigerant.
This appliance is marked according to the European directive 2002/96/EC on Waste Electric and Electronic equipment /WEEE). By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product.
The symbol on the product, or on the documents accompanying the product, indicates that this product may not be treated as household waste. Instead it shall be handed over to the applicable collection point for recycling of electrical and electronic equipment. Disposal must be carried out in accordance with local environmental regulations for waste disposal. For more detailed information about treatment, recovery and recycling of this product, please contact your local city offi ce, your household waste disposal service or the shop where you purchased the product.
GB
Fault fi nding chart
Fault Possible cause Action Box not cold. Compressor will not start.
Compressor starts but does not cool the box.
Check that power is present at electronic unit. Chech fuse. Check polarity on connectors and cables. Bridge the thermostat over T-C, see wiring diagram. If compressor starts, this indicates a faulty thermostat. If the compressor does nopt start, this indicates a faulty electronic unit or compressor. Contact an authorized service agent. A possible leak in the cooling system, contact an autorized service agent.
If a complicated fault does occur, such as those requiring specialist assitance, pleas contact Indel Marine S.r.l. Italy or your local marine distributor for advise.
Indel Webasto Marine S.r.l.
Te l. +39 0541 848 030 Fax +39 0541 848 563
E-mail: info@indelwebastomarine.com
Installation instructions
Mount the box carefully and safe. It is vitally important, on air cooled units, that the compressor and the condenser are well ventilated and that cold air can enter from below and warm air can leave the space around the compressor unit. (Warm air is leaving upwards). Do not install the box close to warm areas as the stove, heater or the engine. See the separate additional installation instructions for Isotherm SP when the refrigeration unit is equipped with an SP through hull fi tting/heat exchanger and also the separate installation instructions valid for boxes having a “Magnum” compressor unit water cooled with water pump.
Electrical connections
When connecting the box electrically, it is important that following points are considered: Always use cables of suffi cient area. The area in the following table should be regarded as a minimum.
Wire area mm² AWG
Max wire length 12V m / ft
Max wire length 24V m / ft
2.5 12 2.5 / 8 5 / 16 4 10 6 / 18 12 / 32 6 10 10 / 32 20 / 64
* Always connect the box directly to the battery or to the battery main switch on the plus circuit. Do not connect it via the boats own control panel or other diversions as this can cause a voltage drop in the power supply. Use the included fuse holder with a 15A fuse. Use 7.5A fuse in a 24 volt system. The fuse shall be mounted on the plus cable.
* Connect the red cable to the positive (+) terminal and the black to the negative (-) terminal. Use tab type terminals for the connection to the electronic
unit and other cable connectors of suffi cient size for the cable size selected. * Do not connect the box direct to a battery charger. The battery charger must be connected to the battery.
Technical data
Voltage: 12/24 Volt Power consumption: Running compressor: 4 A (half for 24 V system). Average consumption: 12 Volt: approx. 0.7 A (half for 24 V system) at +6°C in the box and 22°C ambient temperature. Compressor: Danfoss BD35F Refrigerant: R134a Fuse: 15 A for 12 V/7.5A for 24 V Type designations: 3041BA2A00000 Air cooled compressor 3041BA2A00006 Air cooled compressor, Pipe with couplings and Click-on bracket 3041CA2B00000 SP-water cooled Dimensions: Height 465 mm (625 incl. compressor), Width 340 mm, Deep 500 mm Weight: 19 kg
Wiring diagram
Air cooled Water cooled SP
Brown
Blue
Black
Red
Red
Black
Red
Black
Brown
Blue
000889-2
000890-2
Isotherm SP Installation instructions
General
Isotherm SP is a sea water cooled refrigeration system for sailing yachts and power boats. This unique system means reduced power consumption and noise level. It has no fan or pump. The sea water cooled skin fi tting/heat exchanger replaces the air cooled condenser and cooling fan. The heat is transferred directly to the surrounding water instead of being circulated as hot air inside the boat.
Description
The special skin fi tting with its integrated condenser/heat exchanger is mounted in the hull and is made of salt water resistant brass with the heat exchanger coil in copper-nickel alloy and replaces the existing skin fi tting for the sink drainage. The connection pipes to the compressor have a length of 1 meter and are equipped with quick couplings. The couplings can be opened and closed without loss of refrigerant. A fi lter dryer is mounted approx. 20 cm (7¾”) above the skin fi tting on the return pipe. A 1¼” ball valve should be mounted on the skin fi tting. Important! The hose between the sink and the ball valve shall be a minimum of ø 38 mm (1½”). The skin fi tting is normally kept clean due to the constant movement of the water and lack of sunlight. During sailing or motoring the water will fl ash the fi tting and the heat exchanger coil rapidly, which will keep it clean from marine growth. The skin fi tting shall be equipped with the zinc anode on the outside and which is included in the delivery.
Operation
Always keep the ball valve open to ensure a satisfactory function. If the ball valve is closed and the boat is in harbour, the fridge will operate at a reduced cooling level.
During sailing or motoring the fridge will operate better but not to its full potential with a closed valve. When the boat is on shore, the fridge system will operate at a reduced level, in this case the ball valve must be kept open
to allow air ventilation through the hose and the sink.
Maintenance
When necessary clean the through hull fi tting, do not use sharp or hard tools, a brush will be enough. In a tropical environment, cleaning of the fi tting has to be made more often. If necessary, the threaded bottom entrance washer can be removed for better access to the heat exchanger coil. Corrosion: Galvanic corrosion can often take place on board when the boat is surrounded by salt water and should be carefully checked. This type of corrosion takes place depending on various electrical potential between different devices. When two different metals are placed under water and connected to each other, electricity will start to run. To prevent metal damages on parts under water, sacrifi ced anodes made of zinc are installed. Zinc is a less noble metal compared to other materials used and will therefore be sacrifi ced. All Isotherm refrigeration units have the plus and minus power supply separated from all chassis parts. Isotherm SP has a skin fi tting in direct contact with the sea water and has as standard a zinz anode. The brass in the fi tting is dezincifi cation and salt water resistant as well as the Cu/Ni condenser pipes and the soldering silver. The zinc anode on the fi tting shall be inspected regularly and replaced as soon as half or more of the zinc is used. If it is affected to a high degree and not lasting more than one season or part of a season, the electrical system on board must be carefully checked to fi nd the reason for the galvanic or stray-current corrosion. Make sure that the refrigeration system is connected to the electrical system in such a way, it cannot be connected to the shore grounding when shore power is connected. It is recommended to use an insulation transformer in the shore power system, to always be sure, boat and shore grounding is separated. When the boat is equipped with a central bonding system, the SP skin fi tting shall be connected to this with a 6 mm² copper cable. On the skin fi tting, there is a M5 hole for this purpose.
Mounting
First of all, plan the installation!
The skin fi tting is to be mounted in the hull instead of existing fi tting for the galley sink waste water. The hole in the hull shall have a diameter of 60 mm (2½”). When an existing skin fi tting is to be replaced, it is taken away by the following method. Place a wooden plug in the fi tting from outside, use a 60 mm (2½”) hole saw with a centre drill and cut out the complete skin fi tting at the same time as the new hole is made. Put through the connecting pipes and the fi tting from the outside, seal
carefully using Sikafl ex 291 or equivalent. The skin fi tting has a 32 mm wrench grip on the inside part for easy tightening of the counter nut. Bend aside the connection pipes to allow the 1¼” ball valve to be mounted, which on the galley sink side shall have a hose serrated tail ø38 mm (1½”) hose to be installed. As an option, there is a kit available, consisting of a 1¼ ball valve, ø38 mm (1½”) hose adaptor and modifi cation kit for the sink hose connection. Part no. SFD 00008 AA.
Remember to use twin hose clamps below the water line level.
The compressor unit is most likely to be placed in the compartment below the sink, in a suitable distance from the skin fi tting, not more than one meter (3 ft.). The compressor shall be mounted horizontally. The bracket allows a choice of mounting positions, standing or bulkhead mounting. The compressor needs to be protected from splashed water or water leaking from the sink at all times.
Connection diagram
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