Eco Hometec EC 25 COMPACT Technical Manual Download

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eco hometec

Variable Controlled Output

(VCO)

Solar Compatible

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Gas Condensing Boilers

EC 25 COMPACT

Summary of Contents for EC 25 COMPACT

Page 1: ...eco hometec Variable Controlled Output VCO Solar Compatible jjjjj Gas Condensing Boilers EC 25 COMPACT T TE EC CH HN NI IC CA AL L M MA AN NU UA AL L...

Page 2: ...ls 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...

Page 3: ...ial Connection 21 11 2 8 1 5 Frost protection 21 11 3 Weather compensation 21 12 Hot water output 22 12 1 Combi Type S Tap boiler 22 12 2 Pump operation 22 12 3 Hot Water Cylinder 22 13 Safety devices...

Page 4: ...ng burner Energy saving modulating pump Energy saving modulating system water temperature Corrosion free PPS plastic flue tubes and fittings offering ease of siting Data logging via PC for analysing p...

Page 5: ...from a condensing boiler is the water return temperature The water return temperature determines whether the boiler operates in condensing mode which in turn controls the boilers efficiency To sum up...

Page 6: ...existing system with an 80 700 C design But by lowering the water return temperature condensing boilers are capable of achieving efficiencies up to 98 How then can we lower the return water temperatu...

Page 7: ...r passage these hot gases are used to preheat both the return water to the boiler and the incoming combustion air thus ensuring that all of the available energy is used as efficiently as possible 3 2...

Page 8: ...ts 4 x 15mm connections it offers a low temperature output typically 55O C for under floor heating or a fixed variable temperature output for connection to radiators Despite the low boiler flow temper...

Page 9: ...Figure 1 Solar heating EC25 S Type Combi Hydraulic system design when installed with solar heating EC 25 Compact Technical Manual page 9...

Page 10: ...of Flue Gases 00 C 52 Flue Gas Temp 80 600 C Amb 200 C 00 C 70o C Maximum Flue Resistance Pa 185 pH value of condensate water PH 4 5 5 Maximum Flow Temperature 00 C 90 Min Max filling pressure bar 1...

Page 11: ...ct ti io on n V Va al lu ue es s Min Max Gas Pressure mbar 20 25 Maximum Input Rate Natural Gas H HS Types m h3 2 58 Maximum Input Rate Natural Gas S Types m h3 2 95 Electrical Supply VAC 230 Power C...

Page 12: ...F Fi ig gu ur re e 2 2 C Co om mp po on ne en nt t L Lo oc ca at ti io on ns s Page 12 ECO HOMETEC UK LTD...

Page 13: ...n tray 10 Gas valve 11 Fan 12 Venturi tube 13 Water pressure sensor 14 Supply sensor 15 Return sensor 16 Safety device 17 Bleed valve 18 Hot water sensor 19 Exhaust gas sensor 20 Type plate 21 Condens...

Page 14: ...tion to a PC For more details please contact the eco hometec technical department T Ta ab bl le e 8 8 E Ex xt tr ra a I It te em ms s a an nd d a ac cc ce es ss so or ri ie es s All Types All Types Al...

Page 15: ...it is important to consider at the first fixing stage the order you arrange the pipe work and if applicable any cable trunking Figure 3 shows the order in which to fix the pipe work 7 2 Connections 1...

Page 16: ...F Fi ig gu ur re e 4 4 O Ov ve er ra al ll l D Di im me en ns si io on ns s Page 16 ECO HOMETEC UK LTD...

Page 17: ...d Flue Kit 80 125 PPS White Galvanised 90 degree elbow 80 125 PPS White Galvanised 45 degree elbow 80 125 1000mm length PPS White Galvanised Concentric Flue 80 125 500mm length PPS White Galvanised Co...

Page 18: ...hometec for further advice Figure 6 Vertical Flue Application 8 4 Modular installations For multiple boiler modular installations eco hometec supply a range of larger diameter flues Sizes are availabl...

Page 19: ...surance that the joints have been fully pushed home the seal rings and make ends of tubes and fittings should be lightly lubricated with silicone grease Additional 80 125mm concentric flues tubes and...

Page 20: ...be 32mm The existing drainage system should be corrosion resistant 8 6 System By Pass The boiler is designed to operate at a minimum flow rate If zone valves are fitted to all the heating circuits the...

Page 21: ...rature detected by the supply sensor falls below 8 C the pump will be switched on and will circulate water through the central heating circuit If the temperature detected by the supply sensor falls be...

Page 22: ...s and the pre ignition phase begins At the end of the pre ignition phase the system pressure is measured again The following situations are possible Pressure difference 0 06 bar 1 Air in the appliance...

Page 23: ...the control system will block further operation with a flashing 2 on the status display and the supply temperature on the temperature display Once in every two hours the difference between supply and...

Page 24: ...est return water temperatures and will ensure the condensing boiler will operate more efficiently The EC25 may be safely fitted to systems using a high temperature thermal store however we bring to yo...

Page 25: ...lower heat losses due to smaller diameter pipework and should result in installation savings with reduced costs for pipe fittings pipe insulation and installation costs 15 4 Control of Circuits The re...

Page 26: ...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 ec...