User’s Operating Instructions & Important Warranty Information Duo-tec Combi HE A Range Gas Fired Wall Mounted Condensing Combination Boiler Please keep these instructions in a safe place. If you move house, please hand them over to the next occupier.
Contents Section Natural Gas Baxi Duo-tec Combi 24 HE A G.C.No 47 075 35 Baxi Duo-tec Combi 28 HE A G.C.No 47 075 36 Baxi Duo-tec Combi 33 HE A G.C.No 47 075 37 Baxi Duo-tec Combi 40 HE A G.C.No 47 075 38 Page 1.0 Quick Reference Guide 3 2.0 Troubleshooting 4 3.0 Repressurising System 6 4.0 Clearances 7 5.0 Care of the Boiler 8 6.0 Legislation 9 7.0 Notes 10 8.0 Emergency 11 9.
1.0 Quick Reference Guide 2 1 3 4 0 bar ON/OFF/Reset Selector Switch Display Central Heating Temperature Control Domestic Hot Water Temperature Control System Pressure Gauge Position of Optional Timer OFF Position Central Heating & Hot Water Reset The boiler will not operate. Both Heating & Hot Water will operate. Hold for approx 5 seconds and release. Central Heating Indicator - The indicator will illuminate when the boiler is in the central heating mode.
Boiler not working 2.0 Troubleshooting START Make sure the gas supply is turned ON and check if other gas appliances are operating (e.g. fire, cooker). YES Is the ON/OFF/Reset Select Switch in the ( ) position ? Is the ( ) or ( ) light on and the ( ) on ? YES Domestic Hot Water Indicator Central Heating Indicator NO NO If no gas, consult your supplier. Is the display lit ? YES Burner On Indicator Boiler operating satisfactorily. Display NO Check electricity to the boiler is switched on.
2.0 Troubleshooting Is the Timer ON and calling for heat ? 12 Is the Room Thermostat (if fitted) set high enough ? 10 15 20 25 4 8 5 3 9 2 5 6 7 Typical examples of external timer YES 1 10 11 YES NO 10 15 20 25 Ensure timer is set for Central Heating ON (see any instructions supplied with timer). 5 NO Turn Room Thermostat to maximum setting (typical example shown). CONTACT YOUR INSTALLER OR SERVICE ENGINEER.
3.0 Repressurising System 3.1 1. The normal operating water pressure is between 1 and 2.5 bar (Fig. 1). If the pressure exceeds 3 bar the safety pressure valve will operate and a fault is indicated. Contact your installer. 2 1 3 4 0 Central Heating System Pressure bar Fig. 1 Normal Pressure 2. It may be necessary to repressurise the system occasionally (Fig. 2). A filling device (the filling loop) will be fitted on the system. This will be on the boiler itself, or on pipework near to the boiler. 3.
4.0 Clearances 450mm 5mm Min 5mm Min 200mm Min (300mm Min if using 80/125mm flueing system 4.1 For your Safety 1. This appliance must have been installed in accordance with the manufacturer’s instructions and the regulations in force. 2. Any modification that may interfere with the normal operation of the appliance without express written permission from the manufacturer or his agent could invalidate the appliance warranty.
5.0 Care of the Boiler 5.1 Cleaning the Outer case The painted panels should be wiped with a damp cloth and then dried completely. DO NOT USE ABRASIVE CLEANING AGENTS. 5.2 Protection & Precaution 1. The boiler incorporates an integral frost protection feature that will operate in both modes. If the boiler temperature falls below 5° C, then the boiler will operate until the water temperature has been raised. 2.
6.0 Legislation 6.1 Installation, Commissioning, Service & Repair 1. This appliance must be install in accordance with the manufacturer’s instructions and the regulations in force. Read the instructions fully before installing or using the appliance. 2. In GB, this must be carried out by a competent person as stated in the Gas Safety (Installation & Use) Regulations. 3.
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Please complete the boxes below 9.0 Warranty & Service Serial Number Standard Warranty Terms & Conditions To activate your second year free warranty you must register your boiler with heateam the service division of Baxi Heating UK Ltd either by completing and returning the registration card or calling our telephone registration line on 0800 013 7989.
