Initial Start-up and Final Adjustments

(1) For gas equipment with an input of one million BTU's or more per combustion chamber, an authorized representative of the equipment or burner manufacturer shall perform the initial start-up, final adjusting and testing of the burner and controls in the presence of the gas inspector. Additionally, the serving gas supplier must be notified at least 48 hours in advance of the initial startup to be given the opportunity to attend the startup. (2) Purging of Gas Equipment. The furnace, passes, and connected flue piping shall be thoroughly purged before lighting of pilots or burners. This shall be done by creating air flow through the setting by fully opening flue dampers and air shutters and by operation of induced and forced draft fans, if present. (3) Control Operating Tests. (a) All controls shall be thoroughly checked for proper operation and sequencing before the burner is put into operation. Manufacturer's instructions shall be followed. (b) All safety shutoff gas valves shall be tested for gas tightness while in the closed position before being placed in service. During this test, gas shall be shut off to all burners downstream from the safety shutoff gas valve. (4) Pilot Operation Tests. (a) After the gas piping has been thoroughly cleared of air and any foreign materials, the pilot burner shall be lighted and adjusted with the main burner manual and automatic valves in the closed position. Adjustment to the pilot shall be made in accordance with manufacturer's instructions. (b) Pilots shall not deposit carbon when adjusted according to the manufacturer's instructions. (c) When escapement or bleed pilots are used, the discharge shall be in a fixed position and shall be freely ignited by the continuous burning pilot or vented to a safe location. (5) Burner Operation Tests. (a) The main burner shall be put into operation and tested only after 248 CMR 7.04(2) through (4) have been completed. Manufacturer's instructions shall be followed for light-off and adjustment of the main burner. (b) Pilots shall reliably effect immediate ignition of the main burner even when the gas supply to the pilot(s) is reduced to a point where the pilot flame is just sufficient to actuate or energize the flame detection device. Follow the manufacturer's instructions in conducting this test. (c) Continuously burning pilot flames shall not become extinguished: when the main burners are turned on or off in a normal manner, either manually or by automatic controls, when the air flow through the burner is rapidly changed from maximum to minimum or vice versa after the main burners are shut off following operation of the equipment at its maximum capacity, nor during any normal operating conditions that will occur. The above tests shall be repeated three times. (d) The pilot burner shall reliably ignite the main burner under any normal condition of operation. (e) The arrangement of burners, valves, and pilots shall be such that when only the pilots supervised by the flame safeguard equipment are in operation, any burner or combination of burners shall be effectively ignited without delayed ignition or flash back. (f) Burner flames shall not flash back when fired at any rate within the installed operating range of the burner. (g) Burner flames shall not flash outside the equipment when the gas is turned on or off by the automatic control mechanism. (h) Proper air-gas ratio shall be maintained and combustion shall be complete over the full installed operating range of the burner. (6) Test for Venting. A check shall be made for proper venting with the burner operating at maximum installed input and with all building exhaust fans operating which are in communication with the room containing the equipment and with all outside closeable boiler room openings shut. (7) Instructions to the Operator. (a) Complete written or printed instructions including wiring diagrams shall be supplied and made conveniently available or posted in a permanent form in a prominent place near the equipment. These instructions shall include complete start up as well as normal and emergency shutdown procedures. Start up shall be from the methods provided by the control system for that purpose. (b) To guard against malfunctioning all controls should periodically be tested on a scheduled basis. (c) Extended Shutdown. When equipment is shut down for an extended period it is recommended that in addition to closing all gas valves, as a further precaution, gas be prevented from leaking into the equipment by blocking off or disconnecting and capping or plugging the gas supply pipe.