PREMIX PILOT ASSEMBLY AND ADJUSTING PROCEDURE
COMPLIANCE ADVISORY
Each Series 6131 Integral Fan packaged dual fuel burner includes selected ancillary components as described in the product literature but is not, in and of itself, a complete "compliant" combustion system as supplied. It dœs not include all the necessary fuel train components and safety interlocks that are required by NFPA 85 and 86, other safety standards and/or insurance underwriters' guidelines. The user is responsible to determine the applicable safety code or standard and ensure the supply of all safety compliance components in a comprehensive combustion system. Fives North American Combustion, Inc. can furnish all the necessary items, such as fuel trains and/or their components, as either packaged sub-assemblies or loose parts.
The following adjustment procedure is recommended:
1. Close boost gas valve (Item 6). 2. Remove cap to gain access to mixer fuel adjustment. 3. Fully close (turn cw) the fuel adjustment and then open it (turn ccw) three complete turns. 4. Start burner and allow pilot to light. Observe pilot flame. The flame should be 5" to 6" long with a sharp blue cone appearance. If it is not sharp, adjust fuel to achieve this appearance. 5. At this point, the burner may go off on flame failure due to the scanner not being able to "see" the pilot flame without the boost gas. Relight pilot and open boost gas valve (Item 6). Adjust upstream pressure regulator to obtain 2 to 2.5 psi on boost gas gauge (Item 5). 6. Observe flame. It should be 12" to 15" long and be able to hold in flame relay. 7. Recycle burner to ensure that pilot lights and provides adequate flame signal.
Supersedes Drawing KC11-9371
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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