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Complete Compiled Specification.pdf - Peck Ormsby Construction

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SECTION 15700 HEATING-COOLING<br />

PART 1 - GENERAL<br />

SCOPE:<br />

The installation covers the furnishing and installing of rooftop heating/air conditioning units and all necessary trim<br />

and specialties, etc., as specified and shown on drawings and as required to provide the complete heating and<br />

air conditioning systems shown on the drawings and specified herein.<br />

PART 2 - PRODUCTS<br />

HOT WATER BOILER:<br />

Furnish and install hot water boiler as shown on plans in accordance with all codes and authorities having<br />

jurisdiction. Boiler shall be UL/FM approved and have an input of 1000 mbh with a gross output of 860-920 mbh<br />

(dependent upon return water temperature).<br />

<strong>Construction</strong><br />

Boiler shall be of gas fired, condensing fire tube design with a modulating power burner and positive pressure<br />

discharge. Burner shall be capable of 20:1 turndown of firing rate without loss of combustion efficiency. Heat<br />

exchanger/combustion chamber shall incorporate a helical fire tube design that will be self supporting, baffle<br />

free, and warranted to withstand thermal shock. Heat exchanger shall be ASME stamped for a working<br />

pressure not less than 150 psig. Unit shall have an ASME approved relief valve. Exhaust manifold shall be of<br />

corrosion resistant porcelain enameled cast iron, with a 6" diameter flue connection. Exhaust manifold shall have<br />

a gravity drain for the elimination of condensation.<br />

The flame monitoring system shall incorporate a U/L recognized combustion safeguard system utilizing<br />

interrupted spark ignition and a rectification type flame sensor. An electro-hydraulic double seated safety shutoff<br />

valve shall be an inherent part of the gas train.<br />

Boiler shall incorporate electric probe type low water cutoff and dual over temperature protection including a<br />

manual reset in accordance with ASME section IV and CSD-1. Remote fault alarm contacts, and sensor failure<br />

detection. Boiler shall operate on 120/1/60.<br />

Installation<br />

All aspects of installation of Boiler Plant shall be in strict accordance with manufacturer's instructions. Materials<br />

shall conform with all manufacturers’ recommendations and shall include a Stainless Steel AL-29-4C Positive<br />

Pressure U/L Listed Vent System. Boiler shall have individually isolating shutoff valves for service and<br />

maintenance.<br />

____________________________________________________________________________________________________________________________________________________________________________________<br />

____<br />

SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009<br />

HEATING-COOLING 15700-1

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