Knowledge base

We pride ourselves on our product and service knowledge. Any question you might have, no matter how large or small, we’ll do our best to answer it for you.

General questions

Glycol in the heating system

How much glycol should there be in the expansion tank?

When the liquid is cold, the level in a system of normal size should be about 0.5 inches (1 cm) above MIN. 

The bigger the heating system, the more the liquid expands and so the level should be lower when the system is cold.

What type of glycol should I use in my heating system?

The heating system shall be filled with a liquid mixture consisting of water and “GRAS” (generally recognized as safe) non-toxic propylene glycol. Preferably use ready-mixed glycol of high quality (with inhibitor) intended for aluminum heating systems.

When using concentrated glycol, the mixture shall be 60% distilled water and 40% glycol.

If the heating installation is subjected to lower temperatures than -15°F (-25°C), the glycol content should be increased; however, not more than 50%. 

How often do I need to replace the glycol in my heating system?

It depends on the quality of glycol already in your heating system. Glycol is a consumable item and has to be replaced before it stops providing protection (lubrication and rustproofing). A good quality glycol will only have to be replaced every five years, while glycol of a poorer quality should be replaced every two years. So in the long run, it's worth using a good quality glycol.

Winter camping

Can I use my heating system even though the freshwater in my water heater has been drained off?

Yes, you can use your heating system as normal even if the water heater is empty.

Does it matter what kind of LPG bottle I use when camping in winter?

LPG bottles made of steel or aluminium are ideal. But you should avoid LPG bottles made of composite materials as LPG has trouble vaporising below 0°C.

Propane or butane - what kind of LPG should I use?

Alde recommends the use of propane throughout Northern Europe.

Propane can be used at temperatures down to -42°C, while butane is more suited to temperatures of +5°C and up.

Winter storage

What should I bear in mind when laying up my vehicle for the winter?

  1. First of all, drain off all the freshwater from the water heater using the drain valve on the boiler.
  2. Check to make sure that all the freshwater has been drained off.
  3. Check also that you have enough frost protection in the glycol in the heating system so that it can withstand the temperature at which the vehicle will be stored.

Can I run my heating system at maintenance level even though the freshwater in my water heater has been drained off?

Yes, you can use your heating system as normal even if the water heater is empty.

Questions about Alde Compact 3010

How do I get hot water in summer without heat circulating in the system?

Set the required room temperature to well below the ambient temperature on the control panel.

The Alde Compact 3010 is a combination boiler, so it heats both heating fluid and hot water at the same time. If you set the required temperature to about 41°F (5°C) below the ambient temperature on the control panel, the heating fluid won't circulate out to the convectors as the circulation pump will be stationary. THERM (green) should be activated beneath the pump operation symbol on the control panel.

How much hot water is available?

The Alde Compact 3010 has a water heater with a volume of approx. 2.2 gal (8.5 litres) of hot water at >122°F (50°C). When the hot water is mixed with cold water approx. 50°F (10°C) to normal usage temperature approx. 100 °F (38°C), this gives you around 3.2 gal (12 litres) of hot water every 30 minutes. The colder the water, the longer it takes to heat up. If a 120 V immersion heater is used to heat the heater instead of, this reduces the capacity slightly.

The "extra hot water" functions on the digital control panel for the Compact 3010 increases the water temperature to 122°F (65°C) for 30 minutes. This means ≈ 4 gal (15 litres) of heated water, mixed and ready to use.

Why am I not getting hot water, or why isn't the water very hot?

The control panel is set for constant circulation pump operation, which means that all the power is being used to run the heating system.

How does the control panel work?

The instructions for your control panel and boiler should be left in your vehicle.

How quickly should the vehicle heat up?

This varies enormously depending on the internal and external temperature, how many people are present, the design of the heating system and the vehicle's insulation. And also depending on whether you're just using the 120 V immersion heater (1 or 2 kW) or just gas, or the immersion heater and gas together. This gives an output of anything from 1 kW to 7.4 kW. 

Room temperature inside the vehicle normally reaches a pleasant level within one hour if you're using both gas and the immersion heater.

How do I get the best performance out of my heating system?

  1. Make sure you've bled the heating system (it should be filled using an Alde filler pump 1900 811).
  2. Make sure that the ventilation ducts in the furniture aren't blocked.
  3. Use maximum immersion heater and gas output while heating.
  4. Avoid taking hot water for showers, etc. until the vehicle is warm.
  5. Don't allow the temperature in the vehicle to fall below 10 °C by day/in the evening.

How much current does the heating system use?

There are two functions in the Alde Compact 3010 that draw >0.1 A of current from the vehicle's 12-volt battery. The combustion fan which supplies the burner with air (≈ 0.4 A), and the circulation pump that circulates the hot glycol in the heating system (≈ 0.2 A). 

So normally the heating system draws ≈ 0-0.6 A when running on LPG and ≈ 0-0.2 A with a 120 V immersion heater. 

As a maximum, the boiler draws 1.9 A for about three seconds when starting on 12 V DC.

How much LPG does the boiler use?

The burner in the boiler operates in two stages. Low heat requirement - lowest output setting (0.54 lb/h / 245 g/h propane) and high heat requirement - highest output setting (0.9 lb/h / 405 g/h propane).

The boiler is so ingeniously designed that it initially selects the immersion heaters as the primary heat source if 120 V is connected to the vehicle and if the immersion heaters are activated in the control panel. If this is not enough, the LPG burner starts automatically (if this is activated in the control panel).