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2. Connect the earth ( ), live (L1) and neutral (N) of the power cable to terminals 1 through 3 in the connector block as stated in the table. 3. Turn the strain relief tight to clamp the lead. 4. If you do not need to make any more connections, fit the protective cover onto the control column. 5. Connect the power cable to the isolator. Warning >Leave the appliance electrically isolated until you are ready to start it up. Instruction manual BFM Installation 36 Instruction manual BFM 3 is 3.11 Checking the supply pressure and burner pressure Note Before starting the appliance and/or checking the supply pressure and burner pressure, you must fill (5 "Filling") the appliance. Caution Before starting up for the first time or after conversion, you must always check the supply pressure and burner pressure. Note The easiest way to check the gas pressures is by using two pressure gauges. This procedure assumes that these two gauges are available. If the appliance is to be run on a different gas category than the factory preset gas category (see type plate) then you must first convert (4 "Conversion to a different gas category") the appliance. Gas control for BFM 30 through 100 Legend 1. burner pressure regulator 2. burner pressure regulator cap 3. burner pressure regulator adjustment screw 4. gas control connector 5. blank plate 6. supply pressure test nipple 7. gas control 8. manifold test nipple 1 4 5 6 8 7 2 3 IMD-0256 R1 is Gas control for BFM 120 Legend 1. burner pressure regulator 3. burner pressure regulator adjustment screw 6. supply pressure test nipple 7. gas control 8. manifold test nipple 1 6 8 7 3 IMD-0257 R1 1. Isolate the appliance from the power supply (10.3 "Isolating the appliance from the mains"). 2. There are two test nipples on the gas control. Test nipple (6) is used to check the supply pressure. The other test nipple on the gas control is not used. The manifold test nipple (8) is used to measure the burner pressure. Sealing screws are located inside the test nipples. Loosen both sealing screws by a few turns. Do not completely loosen them; they can be difficult to re-tighten. 3. Connect a pressure gauge to the manifold test nipple (8). 4. Open the gas supply and bleed the air from the mains gas supply via test nipple (6). 5. Connect a pressure gauge to the manifold test nipple (6) when gas starts to flow from this nipple. 6. Switch on the power to the appliance using the isolator on the appliance. 7. Set the control thermostat to the maximum temperature and start the appliance running by setting the ON/OFF switch to position I. 8. The heating cycle will start, and after a short time the burner tray will ignite. 9. After the burner tray has ignited, wait approximately 1 minute before reading the dynamic pressures. 10. Use the pressure gauge to read the supply pressure at test nipple (6). Refer to the gas data table (3.4.3 "Gas data"). Note Consult the mains gas supply company if the supply pressure is not correct. Instruction manual BFM 3 Installation is 11. Use the pressure gauge to read the burner pressure at nipple (8). Refer to the gas data table (3.4.3 "Gas data"). Note If the burner pressure is incorrect and the appliance is fitted with a blank plate or high-low control, then you cannot adjust the pressure. In this case, consult your installation engineer or supplier. If the appliance is indeed fitted with a burner pressure regulator, then you can adjust the pressure. 12. BFM 30, 50, 80, 100 13. Remove the cap (2) from the burner pressure regulator. 14. Depending on the correction required, correct the burner pressure by turning adjustment screw (3): -Adjustment screw anticlockwise: burner pressure decreases. -Adjustment screw clockwise: burner pressure increases. 15. BFM 120 16. Remove the cap (2) from the burner pressure regulator. 17. Depending on the correction required, correct the burner pressure by turning adjustment screw (3) (PG) using the Allen key supplied with the appliance: -Adjustment screw anticlockwise: burner pressure decreases. -Adjustment screw clockwise: burner pressure increases. Warning Adjustment screw (Ps) adjusts the starting pressure. This need not, and must never be adjusted from the factory preset. 18. Check the burner pressure against the value given in the gas table (3.4.3 "Gas data"). 19. If the pressure reading is not correct, repeat the burner pressure adjustment until the correct pressure is obtained. 20. Shut down the appliance by setting the 0/1 switch to position 0. 21. Shut off the gas supply. 22. Disconnect the two pressure gauges and re-tighten the sealing screws in the test nipples. Note Before starting-up the appliance, take time to fill in the warranty card supplied with the appliance. This enables us to guarantee the quality of our systems and further enhance our warranty procedure. Please return this card as soon as possible. Your customer will then receive a warranty certificate with our warranty conditions Instruction manual BFM is 4 Conver...

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