The SDS / Series Sequence Draft System is specifically designed to interface with a fully modulating burner flame safeguard control system, regulating furnace draft pressure by safely positioning a stack damper based on a burner operating sequence. The SDS / Series is approved by the City of New York - Model No. SDS-1   Part No. 41-728.

Versatility
The SDS / Series can be used on an existing burner, or ordered with a new burner. It can be used on any model Industrial Combustion Burner, and also on most burners from other manufacturers.

Design
The components of the SDS are mounted and wired in a remote control cabinet as a totally integrated system facilitating a proper and less costly installation with particular concern for safe operation. A selector switch allows for automatic or open damper operation. In the automatic position,a full open damper must be proven before ignition. The damper position for ignition is adjustable. With the selector switch in the open damper position, the damper will drive to the full open position and will remain there until the automatic position is selected. The stack damper will drive to the full open position if a flame failure should occur.  Furnace draft is continuously monitored by a controller /pressure gauge, and an insufficient draft switch with a time delayed response. The stack damper is positioned by a damper motor and stack temperature is monitored with a digital indicator. Indicating lights for power on, call for heat, high stack temperature, and insufficient draft are mounted in the remote control panel.

Advantages
1. Lower total fuel costs.
2. Improved combustion efficiency.
3. Improved pilot and main flame ignition.
4. Improved burner/boiler operation monitoring.

Standard Equipment
1. 20" X 16" X 8-5/8" control panel.
2. Photohelic controller - compound range -0.25 to +0.25 W.C. Other ranges available. (120/1/60 control circuit)
3. Auto/open switch, signal lights. (power on, call for heat and insufficient draft)
4. Insufficient draft switch.

Optional Equipment
1. Digital stack thermometer 0-1000 degrees Fahrenheit.
    a. Thermocouple wire.
    b. Type J thermocouple assembly.
    c. High stack temperature light.
2. Damper motor assembly.
    a. Mounting bracket.
    b. Damper bearings and brackets.
    c. Heavy duty linkage.

UL Listed
The SDS / Series sequence draft system is listed by Underwriters laboratories.

To download Product information on SDS Sequence Draft Systems Click Here

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