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SECTION VI - TECHNICAL SPECIFICATIONS

6.1 GENERAL The following pages contain Tables with general reference information intended to assist in the instal- lation of your Clayton steam generator. The information is provided only for standard Clayton thermal prod- ucts. Specially designed equipment, such as Clayton steam generators with Low NOx burners, are excluded from these Tables, but are addressed in Supplemental Instructions. 6.2 AGENCY APPROVALS All standard modulating Clayton steam generators are designed and built to meet ANSI, ASME, Boiler Pressure Vessel Code Section I, ASME CSD-1, IRI, FM, and UL requirements. The marine listings ABS, USCG, DNV, and CCG, are available. 6.3 CONSTRUCTION MATERIALS Only high quality materials are used in the manufacturing of the Clayton steam generator. The heating coil in the generator is manufactured by Clayton using ASME SA178 steel tubing. All welds are performed by Clayton ASME certified welders and stress relieved. The coil is then hydrostatically tested to 1.5 times the design pressure or 750 psig (52 bars) which ever is greater. The coil is encased in a mild steel jacket that contains all combustion gases. The steam separator shell is constructed of SA53 seamless black pipe. The heads are made of ASME SA 285 carbon steel. The separator also has openings for steam safety relief valves. 6.4 FLAME SAFEGUARD Burner flame control is managed by the Electronic Safety Control (ESC). The ESC is a microproces- sor-based burner management system designed to control and supervise forced draft burners. It provides a proven burner purge period prior to each firing sequence. This control monitors both pilot and main flames. It cycles automatically each time the operating pressure setpoint is achieved. In the event of a flame failure during a firing cycle, all fuel valves are de-energized. The ESC will then lock out and total burner shutdown will be indicated on the display and operating unit. Before the burner can be started again, a manual reset of the ESC is required. The ESC has a safety checking circuit that is operative on each start. If a flame is detected prior to a firing sequence or during the purge period, the burner controls will not energize. Total safety shutdown will occur requiring a manual reset of the ESC. Operating and programming of the ESC, diagnosis of burner operations, and readouts of ESC settings and operating states are executed from a display and operating unit, which is mounted on the right-hand door to the electrical control box. The display and operating unit features a 4 x 16 character LCD display, 4 silicon user buttons, and communication ports for external device interfacing.

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05/05/2016

Sect06_TechSpecs_xx4_m.fm