4441DMC-3 page 2
INSTRUCTIONS
1. System has been sized for standard sea level conditions. For any other conditions including elevation, high ambients, preheated air, etc., the individual components must be selected based on the maximum actual flow rates that will be encountered during operation. 2. System has been sized based on 16 osig (27.7"w.c.) air pressure at the burner at high fire and 1"wc air pressure at the burner at low fire. To ensure tight sealing of the 7216- - BP regulator at low fire, allow for a negative 2" bias on the regulator spring. Thus the maximum gas pressure available from the 7216 regulator at high fire is 25.7"w.c. (with 16 osig impulse). 3. To increase the air impulse available to the 7216 (if necessary), a metering orifice or other fixed resistance component can be installed downstream between the 1122 and the air impulse line to the regulator. Size your combustion air supply pressure accordingly.
4. For the components selected in Table 1, and under the conditions specified above, the 4441DMC will operate with up to 30% XSF. In order to achieve higher XSF, additional air pressure is required to impulse the 7216 regulator. See step 3. 5. The DMC Control Solenoid Valve “H” is an integral piece of the DMC BMS control system. The 3’ proximity to the burner is required to ensure proper control of the burner flame during the transitions between conventional and diffuse combustion modes and should not be compromised.
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
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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