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manual abstract
The test data from which it has been calculated has been certified by 0087. 10 © Baxi Heating UK Ltd 2008 Inlet Pressure (Natural Gas - G20) mbar 20 Injector (Natural Gas - G20) 7.5mm (24&28 model) 12mm(33 model) Electrical Supply 230V~ 50Hz (Appliance must be connected to an earthed supply) Power Consumption 155W (24 & 28 model) 160W (33 model) Electrical Protection IPX0D External Fuse Rating 3A Internal Fuse Rating F2L Condensate Drain To accept 21.5mm (3/4 in) plastic waste pipe Flue Terminal Diameter 100mm Dimensions Projection 125mm Connections Gas Supply Central Heating Flow Central Heating Return Cold Water Mains Inlet DHW Flow Pressure Relief Discharge Outercase Dimensions Casing Height Overall Height Inc Flue Elbow Casing Width Casing Depth Clearances Above Casing Below Casing Front Front L.H. Side R.H. Side copper tails -22mm -22mm -22mm -15mm -15mm -15mm -780mm -965mm -450mm -345mm 200 mm Min 200 mm Min 450 mm Min (For Servicing) 5 mm Min (In Operation) 5 mm Min 5 mm Min (In Operation) Weights (kg) (24) (28) (33) Packaged Boiler Carton 48.6 49.2 51 Installation Lift Weight 43.6 44.2 46 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 Gold Combi 24, 28 & 33 HE A NOx Class 5 Central Heating Primary Circuit Pressures bar Safety Discharge 3 Max Operating 2.5 Min Operating 0.5 Recommended Operating Range 1-2 DHW Circuit bar Pressures Max Operating 8 Min Operating 0.15 Flow Rates (24) (28) (33) l/min l/min l/min DHW Flow Rate @ 30o CRise 11.43 13.3 15.7 DHW Flow Rate @ 35o CRise 9.8 11.5 13.5 Min Working DHW Flow Rate 2 2 2 Pump Available Head See graph below Expansion Vessel -(For Central Heating only. Integral with appliance) Min Pre-charge Pressure Max Capacity of CH System Primary Water Content of Boiler (unpressurised) bar 0.5 (24,28) (33) litre litre 125 155 2.5 2.8 Temperatures C.H. Flow Temp (adjustable) 25°C to 80°C max (± 5°C) D.H.W. Flow Temp (adjustable) 35°C to 60°C max (± 5°C) dependent upon flow rate Pump - Available Head Metre (wg) 200 400 600 800 1000 1200 Flow Rate (l/h) 5.0 Dimensions and Fixings At least 1.5° A G Dimensions E A B 780mm 345mm C 450mm D 116mm O Min. E 185mm (207mm for 80/125mm flue systems) F 145mm G 131mm 65 mm 65 mm 65 mm 65 mm 65 mm 32.5 mm Condensate Drain Tap Rail 360° Orientation Flue O 100mm D C B F H H 180mm J 270mm J Heating Domestic Hot Gas Cold Water Heating Pressure Relief Flow Water Outlet Inlet Inlet Return Valve (22mm) (15mm) (22mm) (15mm) (22mm) (15mm) © Baxi Heating UK Ltd 2008 6.0 System Details 6.1 Information 1. The Potterton Gold Combi HE A Condensing Combination Boiler is a ‘Water Byelaws Scheme - Approved Product’. To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN). a) IRN 001 See text of entry for installation requirements and notes. b) IRN 302 Byelaw 14. 2. Reference to the WRc publications, ‘Water fittings and materials directory’ and ‘Water supply byelaws guide’ give full details of byelaws and the IRNs. 6.2 Central Heating Circuit 1. The appliance is suitable for fully pumped SEALED SYSTEMS ONLY. Treatment of Water Circulating Systems • All recirculatory water systems will be subject to corrosion unless an appropriate water treatment is applied. This means that the efficiency of the system will deteriorate as corrosion sludge accumulates within the system, risking damage to pump and valves, boiler noise and circulation problems. • When fitting new systems flux will be evident within the system, which can lead to damage of system components. • All systems must be thoroughly drained and flushed out. Using, for example Betz-Dearborn Sentinel X300 or X400 or Fernox Superfloc Universal Cleanser. They should be used following the flushing agent manufacturer’s instructions. • System additives - corrosion inhibitors and flushing agents/descalers should comply to BS7593 requirements, e.g. Betz-Dearborn Sentinel X100 and Fernox-Copal which should be used following the inhibitor manufacturer’s instructions. Failure to flush and add inhibitor to the system will invalidate the appliance warranty. • It is important to check the inhibitor concentration after installation, system modification and at every service in accordance with the manufacturer’s instructions. (Test kits are available from inhibitor stockists.) • For information or advice regarding any of the above contact Technical Enquiries. 6.3 Bypass 1. The boiler is fitted with an automatic integral bypass. 6.4 System Control 1. A 24 hour electro - mechanical timer is supplied fitted to the boiler. 2. Further external controls (e.g. room thermostat) should be fitted to optimise the economical operation of the boiler. 12 © Baxi Heating UK Ltd 2008 13 6.0 System Details © Baxi Heating UK Ltd 2008 6.5 System Filling and Pressurising (Fig. 4) 1. A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling. A filling loop & i...