Use engine waste heat for heating and hot water or pre-heat your engine before hitting the road

As you drive along, your motorhome’s engine constantly produces waste heat that is expelled
into the atmosphere. With the Alde Engine Heat Exchanger you can use that waste heat for your central heating and hot water instead!

Advantages

Use engine waste heat for space heating and hot water.

May be used for engine pre-heating

Avoid unnecessary cold starts

Reduced stress on the engine during cold-weather operation

Information

Engine heat exchanger

Article number: 2968901

The waste heat in an engine’s cooling system can be used for heating the living space via Alde’s engine heat exchanger and central heating system. Then all that’s required is to set the desired room temperature on the control panel as normal and the central heating circulates automatically when called for.

The system can be reversed if a circulation pump (2755) is installed in the engine cooling system, allowing the engine to be pre-heated, saving the extra fuel used in cold starting.

When installing the engine heat exchanger, the vendor or vehicle manufacturer should be consulted to avoid technical mishap.

This is how it works

The heated engine coolant passes through the heat exchanger.
In the heat exchanger, the heat from the engine coolant is transferred to the glycol fluid of the heating system.
A pump drives the heated glycol fluid through the heating system.
Once the glycol fluid has given off its heat, it returns to the heat exchanger to be reheated.

This process is repeated as long as the engine is running and the heat exchanger pump is switched on.

Engine heater: The heat exchanger can also be used to warm up the engine coolant before starting, keeping the engine warm and ready to run even in cold conditions.

Dimensions	L 7.5" x W 2.8" x H 2.5" (L 190 × W 72 × H 65 mm) excl. connections.
Weight	1.3 kg
Connection to the heating system	Ø 22 mm
Connection to the engine system	Ø 16 mm

More comfort and better for the environment

efficiency

More comfort

The Alde Engine Heat Exchanger is incredibly simple to use, just set the Alde control panel as normal, with gas and electric heating disabled. The glycol fluid will circulate, gaining heat from the engine as you drive.

Fit the optional Alde Engine Preheat Pump and warm
up a cold engine using your central heating.

Engine pre-heating helps prepare the engine for operation before driving, especially in cold weather conditions. It makes use of heat already available in
the Alde heating system and eliminates the need for a separate engine block heater.

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How it works

The Alde Engine Heat Exchanger is plumbed into both the Alde hydronic heating system and the engine’s radiator, but the two fluids don’t mix.

The Alde Engine Preheat Pump is best wired directly into the Alde heater so it can be operated from the Alde control panel.

1. Hot coolant from engine radiator flows through the engine heat exchanger.
2. Heat is transferred from the coolant into the glycol fluid in the Alde heating system.
3. The heated glycol fluid is circulated around the central heating by the Alde system.
4. The coolant continues to cycle through the engine radiator as you drive.

Get an Alde heat exchanger installed

For retrofitting to your existing Alde heating system, contact your nearest Alde Service Centre.
As an option when buying a new motorhome, talk to your dealer.