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FAQ

What caravan and/or motorhome manufacturers currently fit Alde central heating and hot water systems into their range?

Alde systems are usually fitted into higher end models.

>Our European installed base

What level should I fill the fluid in the expansion tank to?

When the fluid is cold it should stand approximately 10 mm above the Min mark.

What type of fluid is the heating system filled with?

A 50/50 mix of ethylene glycol antifreeze and clean water.

Ethylene glycol antifreeze is also used for car radiator systems, and is commonly available from fuel stations and car accessory retailers.

Alde UK prefers Comma Super Longlife Red Concentrated Antifreeze with 5 year Longlife protection.

Can I operate my central heating while the domestic water is drained down?

Yes.

How much fluid is in the central heating system?

Varies. As a rough guide, most caravans and motorhomes hold 10-13 litres, boats 15-25 litres, portable cabins 18-22 litres.

What general maintenance should I carry out?

Your vendor should provide a maintenance schedule, though the following can be assumed:

The ethylene glycol fluid should be replaced according to vendor's instructions. Most vendors use antifreeze with a 2 year protection from new.

Make a visual inspection of the boiler's air inlet and exhaust outlet hose. Check that the hoses are still secured and undamaged, and that the external flue is clear and free of obstruction. Contact your dealer if the hose is damaged.

An annual gas tightness test should be carried out in accordance with the relevant regulations.

What is the power output of the Alde aluminium convectors?

The convectors put out ≈400 W per metre. Doubled up, they put out ≈600 W per metre.

Can copper parts be used in the system?

No.

The contact surfaces in the boiler are all aluminium. Copper parts will cause corrosive galvanic action in any aluminium parts of the system.

Tips

Fitting

When fitting out your vehicle the Alde system is as flexible as you are, but Alde UK has some advice for getting the best performance out of your system, and for avoiding some common design mistakes.

>System design

Servicing

Alde heating systems will have service requirements set by the vendor, based on their system design and relevant legislation.

Alde UK uses a network of certified service agents throughout the country.

>Arrange a service