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HomeMy WebLinkAbout23 21 23 - Hydronic PumpsBEARDSLEY DESIGN ASSOCIATES CORNELL – NCP HYDRONIC PUMPS STANDARD SPECIFICATIONS 23 21 23 – PAGE 1 OF 4 NOVEMBER 2, 2012 SECTION 232123 HYDRONIC PUMPS PART 1 GENERAL 1.1 DEFINITIONS A. Buna!N: Nitrile rubber. B. EPT: Ethylene propylene terpolymer. 1.2 ACTION SUBMITTALS A. Product Data: For each type of pump. Include certified performance curves and rated capacities, operating characteristics, furnished specialties, final impeller dimensions, and accessories for each type of product indicated. Indicate pump's operating point on curves. PART 2 PRODUCTS 2.1 CLOSE!COUPLED, IN!LINE CENTRIFUGAL PUMPS A. Basis!of!Design Product: Subject to compliance with requirements, provide product indicated on Drawings or comparable product by one of the following: 1. Armstrong Pumps Inc. 2. Grundfos Pumps Corporation. 3. ITT Corporation; Bell & Gossett. 4. Patterson Pump Co. B. Description: Factory!assembled and !tested, centrifugal, overhung!impeller, close!coupled, in!line pump as defined in HI 1.1!1.2 and HI 1.3; designed for installation with pump and motor shafts mounted horizontally or vertically. C. Pump Construction: 1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and outlet, replaceable bronze wear rings, and threaded companion!flange connections. 2. Impeller: 30% glass filled noryl. 3. Pump Shaft: Steel, with copper!alloy shaft sleeve. 4. Seal: Mechanical seal consisting of carbon rotating ring against a ceramic seat held by a stainless!steel spring. 5. Pump Bearings: Permanently lubricated ball bearings. D. Motor: Single speed and rigidly mounted to pump casing. 1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. BEARDSLEY DESIGN ASSOCIATES CORNELL – NCP HYDRONIC PUMPS STANDARD SPECIFICATIONS 23 21 23 – PAGE 2 OF 4 NOVEMBER 2, 2012 2. Comply with NEMA designation, temperature rating, service factor, and efficiency requirements for motors specified in Division 23 Section "Common Motor Requirements for HVAC Equipment." a. Enclosure: Open, dripproof. 2.2 ELECTRONICALLY COMMUTATED PUMPS A. Basis!of!Design Product: Subject to compliance with requirements, provide product indicated on Drawings > or comparable product by one of the following: 1. Armstrong Pumps Inc. 2. ITT Corporation; Bell & Gossett. 3. Patterson Pump Co. B. Description: Factory!assembled and !tested, with a proportional pressure control, which automatically adjusts the pump performance continuously and automatically to the requirements of the system. C. Pump Construction: 1. Body: Cast Iron 2. O!ring: EPRM 3. Impeller: Nylon/PPO 4. Pump Bearings: Carbon/alumina ceramic. D. Motor: Shaft!less spherical electronically commutated, permanent magnet motor (ECM/PMM). 1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2. Comply with NEMA designation, temperature rating, service factor, and efficiency requirements for motors specified in Division 23 Section "Common Motor Requirements for HVAC Equipment." PART 3 EXECUTION 3.1 EXAMINATION A. Examine equipment foundations and anchor!bolt locations for compliance with requirements for installation tolerances and other conditions affecting performance of the Work. B. Examine roughing!in for piping systems to verify actual locations of piping connections before pump installation. C. Examine foundations and inertia bases for suitable conditions where pumps are to be installed. BEARDSLEY DESIGN ASSOCIATES CORNELL – NCP HYDRONIC PUMPS STANDARD SPECIFICATIONS 23 21 23 – PAGE 3 OF 4 NOVEMBER 2, 2012 D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PUMP INSTALLATION A. Install pumps to provide access for periodic maintenance including removing motors, impellers, couplings, and accessories. B. Independently support pumps and piping so weight of piping is not supported by pumps and weight of pumps is not supported by piping. C. Equipment Mounting: Install in!line pumps with continuous!thread hanger rods and elastomeric hangers of size required to support weight of in!line pumps. 3.3 ALIGNMENT A. Engage a factory!authorized service representative to perform alignment service. B. Comply with requirements in Hydronics Institute standards for alignment of pump and motor shaft. Add shims to the motor feet and bolt motor to base frame. Do not use grout between motor feet and base frame. C. Comply with pump and coupling manufacturers' written instructions. D. After alignment is correct, tighten foundation bolts evenly but not too firmly. Completely fill baseplate with nonshrink, nonmetallic grout while metal blocks and shims or wedges are in place. After grout has cured, fully tighten foundation bolts. 3.4 CONNECTIONS A. Where installing piping adjacent to pump, allow space for service and maintenance. B. Connect piping to pumps. Install valves that are same size as piping connected to pumps. C. Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles. D. Install pressure gages on pump suction and discharge or at integral pressure! gage tapping, or install single gage with multiple!input selector valve. E. Connect wiring according to Division 26 Section "Low!Voltage Electrical Power Conductors and Cables." BEARDSLEY DESIGN ASSOCIATES CORNELL – NCP HYDRONIC PUMPS STANDARD SPECIFICATIONS 23 21 23 – PAGE 4 OF 4 NOVEMBER 2, 2012 3.5 STARTUP SERVICE A. Engage a factory!authorized service representative to perform startup service. 1. Complete installation and startup checks according to manufacturer's written instructions. 2. Check piping connections for tightness. 3. Clean strainers on suction piping. 4. Perform the following startup checks for each pump before starting: a. Verify bearing lubrication. b. Verify that pump is free to rotate by hand and that pump for handling hot liquid is free to rotate with pump hot and cold. If pump is bound or drags, do not operate until cause of trouble is determined and corrected. c. Verify that pump is rotating in the correct direction. 5. Start motor. 6. Open discharge valve slowly. END OF SECTION 232123