Related Manuals for Eco Hometec EC 25 COMPACT
Summary of Contents for Eco Hometec EC 25 COMPACT
- Page 1 Variable Controlled Output (VCO) Solar Compatible jjjjj Gas Condensing Boilers EC 25 COMPACT...
- Page 2 C:\amanuals\EC25CompactTechnicalManual021099.doc\30 June 2002 eco hometec has a policy of continuous improvement and reserves the right to change any specification without notice. Your statutory rights are not affected. eco hometec is committed to design, develop and produce environmentally friendly appliances...
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Page 3: Table Of Contents
Figure 9 Concentric flue fittings....19 Figure 10 80mm Flue Tubes ....20 9. Electrical Connections ....20 Figure 11 Controls Terminal ....21 Figure 12 Control Terminal Block ... 21 10. Heating Control Options....20 EC 25 Compact Technical Manual page... -
Page 4: Why Choose Eco Hometec
Why choose eco hometec? Benefits at a glance Wall mounted ultra high efficiency gas boilers Suitable for installation into existing systems, new radiator and/or underfloor installations, can also be used with solar heating systems A dramatic reduction of the harmful emissions NOx 8.1 – 27.1 ppm and CO 2.9 –... -
Page 5: Introduction
The water return consequences of burning and wasting so temperature determines whether the boiler much fuel were not fully appreciated. operates in condensing mode, which in turn controls the boilers efficiency. EC 25 Compact Technical Manual page... -
Page 6: Not All Boilers Are The Same
Variable Controlled output (VCO) Answer: Unlike conventional boilers eco hometec appliances do not need To achieve optimum efficiency from a to waste gas in maintaining high flue gas condensing boiler we need to control the temperatures. temperature of the water returning to the boiler. -
Page 7: Approvals
EC 25 Compact Technical Manual page... -
Page 8: Additional Features
3 way switching valve and facilities for cut out thermostat installing as part of the connection to an eco hometec DHW storage system controls. module or similar. Flow temperature to hot water cylinder can be set as required (max. - Page 9 Figure 1 Solar heating EC25 ‘S’ Type Combi Hydraulic system design when installed with solar heating EC 25 Compact Technical Manual page...
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Page 10: Technical Information
European calculation methods are based on efficiency of 100% in units that do not condense the flue gases, and of 110% in condensing units. & & EC25 Model litres Heating Water Capacity Litres Heating Water Coil Capacity (S models) Weight (empty) Page 10 ECO HOMETEC... - Page 11 2.9 – 66 ppm CO (0 % O natural gas: 8.1 – 27.1 ppm NOx (0 % O 50 dB(A) Noise Levels Pump high speed 34 dB(A) Noise Levels Pump low speed EC 25 Compact Technical Manual page...
- Page 12 Page 12 ECO HOMETEC...
- Page 13 Hot water sensor Exhaust gas sensor Type plate Condensation drain/high pressure protection Central Heating Return Central Heating Flow Hot water outlet Cold water inlet Flow to Hot Water Cylinder Return from Hot Water Cylinder EC 25 Compact Technical Manual page...
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Page 14: Accessories
Accessories The following items are also available from eco hometec at extra cost. Colour coded 1/4 Turn Isolating Valves. Stainless Steel Flexible Pipe Connections. In line Filter/Strainers. Condensate sump pump for below ground installations. N.B. LPG installations must not be installed below ground level. -
Page 15: Hydraulic Connections
Figure 3 shows the order in which to fix the pipe-work. Connections 1. Gas 2. Heating Return 3. Heating Flow 4. Flow Domestic Hot Water 5. Cold Mains Water 6. Flow to Hot Water Cylinder 7. Return from Hot Water Cylinder EC 25 Compact Technical Manual page... - Page 16 Page 16 ECO HOMETEC...
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Page 17: Flues And Ventilation
60mm x 500mm length PPS/Grey Flue Tube 60mm x 1000mm length PPS/Grey Flue Tube 60mm x 2000mm length PPS/Grey Flue Tube 60mm Inspection point 60mm Tee Piece 60mm Wall Bracket 60mm Wall Terminal Kit (2 wall plates and S/Steel Grid) EC 25 Compact Technical Manual page... -
Page 18: Vertical Flue Installations
Modular installations Figure 5 Vertical Wall Terminal For multiple boiler (modular) installations eco hometec supply a range of larger diameter flues. Sizes are available in 150mm, 200mm and 250mm. For assistance in flue design and specification please call the eco hometec technical department. - Page 19 Additional 80/125mm concentric flues tubes and fittings are available from eco hometec details below: 80/125 1000mm length...
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Page 20: Condensate Drain
Additional 80 PPS flues tubes and fittings Condensate Drain are available from eco hometec details below: The condense discharge pipe should Figure 10 80mm Flue Tubes be continued in ¾ inch plastic waste pipe into the household drainage system or out through the wall to an existing gully or soak away. -
Page 21: Additional Features
For an extended diagnosis and display of functions, a PC or laptop computer can be connected to connector (3) (Fig. 13). The required connecting cable and software is available from eco hometec as an option. 8.1.5 Frost protection 11.2 If the temperature detected by the supply sensor falls below 8 °C, the pump will be... -
Page 22: Hot Water Output
40 < ∆T < 45 low load is restarted at high speed. The fan runs and > 45 the pre-ignition phase begins. At the end of the pre-ignition phase the system pressure is measured again. The following situations are possible: Page 22 ECO HOMETEC... -
Page 23: High Temperature Protection
3.0 bar. The pressure can be display. read from the display. Once in every two hours the difference between supply and return temperatures must have been less than 5 °C. Is this not EC 25 Compact Technical Manual page... -
Page 24: Condensing System Design
System drop with mixing valves, the temperature from a fixed 80 C start point. Under-floor The eco hometec range of VCO boilers has 14.4 been specifically designed to work with low Flow temperature temperature under-floor heating. Return temperature... -
Page 25: Sizing Radiators And Output
As heating our homes accounts for 70% of diameters for the heating circuits. our annual fuel bills. This will result in lower heat losses, due to smaller diameter pipework, and should WHY? result in installation savings with reduced EC 25 Compact Technical Manual page... - Page 26 Save gas Save money Only boilers from eco hometec are fitted with Variable Controlled Output eco hometec Unit 11E Carcroft Enterprise Park Carcroft Doncaster DN6 8DD Tel. 01302 722266 Fax. 01302 728634 http://www.eco-hometec.co.uk e.mail.sales@ecohometec.co.uk Page 26 ECO HOMETEC...