The Atmos Intercombi HE32

The Energy Conservation Group has partnered with Atmos Heating Systems to bring to the UK market a revolutionary ‘A rated’ high efficiency Combination Boiler.

Why Atmos?

Holland may be best known for tulips, but one of the lesser known facts is that the Dutch have been using condensing gas boilers for the last 20 years. The Inter boilers are made by a Dutch company that have produced 500,000 condensing boilers since 1996, and have developed their products to a high degree of efficiency and reliability.

For many years cast iron has been used for the best boilers as it is an excellent material, but condensing boilers cannot be made from this because the condensate would corrode it away. The Inter heat exchanger however, is made of solid cast aluminium, which has the same thermal qualities as cast iron, but does not corrode. This robust construction results in a boiler that is tough and long lasting, just like the old cast iron boilers; but with the added benefit of high efficiency resulting in substantially lower fuel consumption and Carbon Dioxide emissions.

Our exciting range of high efficiency condensing gas boilers with a unique heat exchanger at its heart and at a price that will make you smile. Over 500,000 Inter Boilers have been produced during the last 12 years, during which time the boiler has proved itself as robust, reliable, very low maintenance and long lasting.

The ‘solar compatible’ Atmos InterCombi HE32 is the ultimate space saving, durable combi boiler. It will warm your home and give you all th hot water you need.

Why you should consider the InterCombi HE32

• High efficiency condensing operation in hot water mode
• Solar compatible – can be linked to a hot water system
• Great hot water flow 12.5 l/m
• Central heating output up to 26.8 kw (91,5000 Btu.hr)
• Can be used for hot water only even when central heating is not connected
• Keep hot facility to provide instantaneous hot water supply
• Eco self learning mode to keep hot only during normal hours of use
• No diverter value needed due to design of heat exchanger
• Can be used on open vented systems  

Inter savings compared with other modern condensing boilers:

Hot water:

The heat exchanger has an integral single tube DHW (Domestic Hot Water) circuit; so that condensing operation works on this circuit as well as central heating (CH). The UK SEDBUK rating is only for CH, but in the Netherlands DHW efficiency is also measured. The HE32 rates DHW at 89% efficiency compared to an average of 75% for other condensing combi’s.

Result = 14% gas saving

Electrical 1:

Other combi’s use a circulation pump for DHW; often single speed 105 watt. However the HE32 heats the DHW directly in the heat exchanger and so the pump is switched off in DHW operation.

Electrical 2:

The controller has a ‘switched mode power supply’. This is a much more energy efficient power supply technology than the ‘linear power supply’ used in most boilers. In standby mode the HE32 uses only 2.4 watts of power. The combined saving on electrical energy used is a massive 89% compared with other condensing combi’s.

Result = 89% electrical saving. Total energy saving = over 19%

Water 1:

Other condensing combi’s use a plate heat exchanger for DHW which means it takes an average of 45 seconds to heat the DHW from cold. That wastes a considerable amount of water. In contrast the HE32 provides instant hot water, thanks to the unique heat exchanger. This produces at least 25% less water used for DHW.

Water 2:

The Eco mode is a self-learning timer which means that the boiler only heats up for DHW during periods of actual use.

Result = 25% water saving

 

Benefits

• Separate heating and hot water circuits - eliminates diverter valve
• Robust cast aluminium heat exchanger gives better thermal performance than cast iron
• Copper water channels eliminate corrosion
• Single continuous waterways minimise risk of blockage or scaling
• Totally safe - not damaged by lack of water - no pressure switch
• Totally reliable - not one heat exchanger failure on over 500,000 units

Energy Use	STD Condesing Gas Combinastion Boiler – kwh	InterCombi HE2 Boiler – kwh	Annual Saving
Space heating energy kwh	3,333	3,333	0%
Hot water heating energy kwh	4,915	3,805	23%
Electrical energy kwh	425	105	75%
Total energy kwh	8,673	7,243	16%
Cost of gas @ 3.5p/kwh	£288.68	£249.83	£38.85
Cost of electricity @ 12p/kwh	£51.00	£12.60	£38.40
Total energy cost	£339.68	£262.43	£77.25
Hot water used m3/annum (average)	43	32	11
Cost of hot water used @ £2.20/m3	£94.60	£70.40	£24.20
Total cost of energy & water @ £2/m3	£434.28	£332.83	£101.45

 

Notes:

1. Energy consumption based on identical modern insulated terraced houses; 111m2 floor area, 5 rooms over 3 floors. One house has an InterCombi HE32, whilst the other had another quality brand high efficiency condensing gas boiler

2. Total costs do not include standing charges

3. Other energy costs include Lighting (1,745 kwh) and mechanical ventilation (1,200 kwh) which are the same for both houses