A.O. Smith BFM 50 - Manual

6 1.2 Technical safety equipment 1.2.1 Gas control The water heaters are equipped with a gas control valve which regulates the flow of gas to the burner. Thecombination gas control is equipped with a safety valve,gas control valve, pilot safety valve and burner control(on a standard natural gas sett...

8 1.3 Technical description 1.3.1 Measurements See figure 4 All dimensions in mm, rounded up to the nearest 5 mm. Size BFM 30 BFM 50 BFM 80 A 1995 1995 2020 B 1795 1795 1820 C 600 600 600 D 520 520 525 E 600 600 590 F 1640 1640 1655 G 1360 1360 1360 H 630 630 625 K 710 710 710 L 1000 1000 1000 M 755...

11 I M D - 0 0 6 5 2. FOR THE INSTALLER If possible, use a trolley or fork-lift truck to move the water heater. Always move the water heater in an uprightposition. 2.1 Installation instructions The following distances should be observed: - Sides of the water heater: 100 cm (free space for the access...

12 I M D - 0 0 6 6 - R 0 Depending on the length and insulation of the water piping and the water demand frequency, it may benecessary to install a circulation system on the draincock. The return pipe of the circulation piping can befitted on the top of the drain cock after the sealing plughas been ...

14 Flue configuration / horizonal discharge BFM-unit Measurement BFM 30 BFM 50 BFM 80 min. max. min. max. min. max. A 0 7000 0 7000 0 7000 B 0 7000 0 7000 0 7000 A+B < 7000 < 7000 < 7000 All measurements are in mm.The following applies for the horizontal pipe: slope of at least 5 mm per met...

15 I M D - 0 0 6 1 I M D - 0 0 6 2 Figure 10 and 11 - Roof discharge. All measurements are in mm. The following applies for the horizontal pipe: slope of atleast 5 mm per metre of pipe to the water heater.A maximum of 2 bends (45° or 90°) may be used with Flue configurations roof discharge BFM-unit ...

17 Figure 12 - Electrical connection diagram BFM I M D 0 0 5 5 R 1

20 Figure 14 - Checking the gas pressures 2.5 Checking the gas pressures The nominal load has been set at the correct value in the factory. A further check of the pressure should becarried out during the commissioning of the unit. A dangerous situation can occur if the following instructions are not...

21 2.6 Conversion to another gas Important: Install a gas valve suitable for the type ofgas to be used.If the water heater has to function on a gas category (LPor natural gas) other than the gas set as standard (exworks), the water heater must be converted to theapplicable gas category with the asso...

25 No or insufficient hot water. Check whether the electricity is turned on. Check whether the gas supply is turned on. Does the ON/OFF switch light up? Does the RESETswitch light up? Push RESET switch up to three times Is the water heater in operation? Consult your installer. 4. FAULT FINDING 4.1 F...

26 4.2 Fault finding INSTALLER Check if ON/OFF switch is in position 1? Put ON/OFF switch in position 1. Problem solved yes Is the water heater in operation? Problem solved yes Is the water heater in operation? Problem solved yes Is the water heater in operation? yes n o n o n o n o n o yes See deta...

27 4.3 Detailed fault finding INSTALLER n o Check voltage present at connection 1. Reinstate voltage supply n o Ensure connections correct,if yes replace FILTER Ensure connections correct,if yes replace ON/OFF switch Check voltage present after FILTER Check voltage present at gate 3 ON/OFF switch Ch...

31 5. WARRANTY The following conditions form the guarantee agreementbetween A.O. Smith Water Products Company (thewarrantor) and the owner of the water heater. 5.1 Guarantee in general If within one year of the original installation date of thewater heater any part or component other than the tanksh...