Summary of Preliminary Submittal Data and Boiler Specifications

This document is a preliminary submittal package for Fulton Vantage hydronic heating boilers being installed at a VA Hospital project, submitted by Modular Comfort Systems Inc. to Towne Engineering dated April 7, 2008. The project requires two Fulton Vantage 4mm boilers—one natural gas fired and one dual-fuel (#2 oil and natural gas)—with a maximum pressure rating of 160 PSI and design temperature of 250°F. Both units must operate in condensing mode to achieve minimum fuel-to-water efficiencies of 93% on natural gas and 88% on #2 oil, with external convection and radiation heat losses not exceeding 0.5% of rated input. The boilers shall be UL-approved direct vent units capable of operating with exhaust draft not exceeding -0.04" wc and combined air intake/exhaust venting pressure drop not exceeding 0.35-0.40" wc, utilizing AL-29-4C piping for direct venting up to 50 feet.

The specification mandates completely factory-assembled units complying with ASME Code Section IV, CSD-1, UL 795, UL 726, and CSA standards, featuring firetube design with stainless steel condensing sections, fully modulating operation with 5:1 turndown ratio on natural gas and 2:1 on #2 oil, and precision servo-motor controlled airflow. Equipment shall include factory-mounted main fuel trains (gas and oil), forced-draft burner with TEFC motor, linkage-less flame safeguard control with 30-second pre/post-purge, comprehensive safety controls (operating temperature controller, high-limit controller with manual reset, low water cutoff probe, air safety switch, flame detector), and panel-mounted controls. The manufacturer shall provide product data sheets, shop drawings, wiring diagrams, and certification of performance. Boiler pressures vessels carry 10-year warranties against thermal shock and material/workmanship defects; heat exchangers are warranted 5 years against flue gas corrosion; remaining components carry 1-year warranties. Installation includes level concrete pad construction (minimum 3.5 inches), electrical control installation per wiring diagrams, complete water piping, air intake and exhaust piping per manufacturer recommendations, and manifold connections to floor drains. Field quality control requires manufacturer field representative services for start-up and operator training, plus National Board of Boiler and Pressure Vessel Inspector certification upon completion.