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In a closed central heating system water cannot be compressed so any increase in the volume, created by an increase in temperature, needs to be accomodated. This is done with the use of an expansion vessel, when the water in the system is cold the pre-charge pressure of the system forces a diaphram in the expansion vessel against the tank towards the inlet. As the temperature increases the expanding water volume pushes against the diaphragm creating additional volume for the water to enter the expansion vessel. As the temperature decreases the pre-charge pressure forces the water from the expansion vessel back into the central heating system. This maintains a constant pressure within the central heating system and helps to reduce energy and water consumption.
The Vaillant ecoTEC pro 24 and 28 range of combination boilers are an ideal choice for small homes, flats and bungalows. The new 2012 range feature comprehensive status and diagnostic information with simple push button operation for easy commissioning and servicing.
With compact dimensions (H: 720mm x W: 440mm x D: 335mm) the ecoTEC pro 24 and 28 are one of the lightest boilers in their class (from 35kg) and is SEDBUK Band 'A' rated. The ecoTEC pro 24 has CH (central heating) heat output range of 6.7 - 19kw and the ecoTEC pro 28 is from 9 - 24kW and has powerful DHW performance with an AquaComfort system that delivers instantaneous hot water at constant temperatures. The ecoTEC pro range have a 1 year guarantee.
Brochures & Manuals
Features & Benefits
|High condensing efficiency||SEDBUK efficiency of 89.2% (SAP 2009)|
|Compact dimensions & low lift||Offers excellent siting versatility and easy installation|
|Stainless steel heat exchanger||Allows more heat to be extracted by recapturing otherwise lost heat|
|'AquaComfort' system||Providing instantaneous hot water at a constant temperature|
|Built-in status / diagnostic display||Comprehensive status and diagnostic information and push button programming|
|Single electronic circuit board||Simplifies commissioning and servicing|
|New user interface||With improved larger back-lit control & simple to follow symbol display instruction|
|Removable side panels||For improved accessibility|
|Push-fit flue system||For greater installation flexibility|
At Boilers2go we recommend the Vaillant ecoTEC Pro Gas Combi Boiler for small homes with a single bathroom where living space is limited and where the user wants the convenience of instant hot water. Also as the ecoTEC Pro Gas Combi Boiler is a condensing boiler, capable reclaiming latent heat from the flue gases, the user will benefit from reduced fuel bills and carbon emissions. This also gives the ecoTEC Pro Combi Boiler an energy efficiency rating of 'A' on the SEDBUK scale. Also Vaillant provide a 1 year manufacturer's guarantee a worthwhile extra in providing peace of mind to consumers who opt for the ecoTEC Pro Gas Combi Boiler.
1 Wall breakthrough for air/flue gas duct
2 Hanging bracket
3 Heating flow (22 x 1.5)
4 Hot water connection (15 x 1.5)
5 Gas connection (15 x 1.5)
6 Cold water connection (15 x 1.5)
7 Heating return (22 x 1.5)
8 Air/flue gas duct connection
9 Condensate siphon
10 Condensate discharge connection, Ø 19 mm
11 Heating expansion relief valve drain line connection, Ø 15 mm