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HYDRONIC SYSTEM SPECIALTIES
PART - GENERAL
SUMMARY
Section Includes: Include labor, materials, equipment, and accessories necessary to furnish and install hydronic specialties in relation to hydronic supplied equipment specified in Section 232113.13 - Underground Hydronic Piping and Section 232113.23 - Aboveground Hydronic Piping.
SUBMITTALS
Shop Drawings: Submit a portfolio showing hydronic system specialties to be used and a schedule of equipment to be served with related specialty types and sizes for approval by Architect/Engineer.
QUALITY ASSURANCE
Regulatory Requirements:
State Building Code
Local Codes and Ordinances
Local Authority having jurisdiction
PART - PRODUCTS
MANUFACTURERS
Acceptable Manufacturers for Air Separators: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Armstrong
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Bell & Gossett
Spiro Vent
Acceptable Manufacturers for Bladder Type Compression Tanks: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Armstrong
Bell & Gossett
Taco
Acceptable Manufacturers for Chemical Feeders: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
J.L.Wingert
Neptune
Vector Industries
Acceptable Manufacturers for Glycol Make-Up System: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
J. L. Wingert
Neptune
Wessels Company
Acceptable Manufacturers for Side Stream Filters: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Harmsco/HIF
Quantrol QFP
Acceptable Manufacturers for Solids Separator: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Lakos
Fremont
Harmsco
Acceptable Manufacturers for Strainers: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Crane No.9881/2 or Crane No.9891/2
Metraflex
Mueller
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Acceptable Manufacturers for Flexible Pump Connectors: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Flexonics
GustinBacon
Mason Industries
Metraflex
Minnesota Flexible
ThermoTech
TriState Industries
Acceptable Manufacturers for Automatic Flow Control Valves: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Griswald
Bell & Gossett
3. Hays
Acceptable Manufacturers for Flow Measuring Stations: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Gerand Engineering
2. Bell & Gossett
3. Hays
4. Tour Anderson
Acceptable Manufacturers for Balance Valves: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Bell & Gossett
Gerand
Hays
Tour Anderson
Acceptable Manufacturers for NonElectric Thermostatic Radiator Valves: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
Danfoss
Honeywell
PIPING SPECIALTIES
Unions - Hydronic Piping: Flanged union connections shall be made with 150 psi weld neck flanges, with not less than 1/16inch sheet gasket. Screwed unions shall be Crane No.250H, or Owner approved equal, bronze to steel seat, 2,000 psi. Couplings shall serve as unions and disconnect points.
Strainers: Crane No.988-1/2, Crane No.9891/2, or Engineer Owner approved equal, with stainless steel or monel mesh screen with reinforced ends and 2inch pipe nipple and cap on discharge openings.
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Air Vents:
Manual: Use Ball Valves
Automatic: Heavy duty unit with built in air chamber, overflow connector for 1/4inch outside diameter copper tubing.
Acceptable Manufacturers: B&G 7, 87, Sarco 13W, or Kunkle
AIR SEPARATORS
Inline Type Air Separators:
Inline air separator shall have a side inlet connection, an equal size top outlet, and an equal size bottom connection. Bottom connection may be used as an inlet, outlet or drain connection. Air separator shall have a 3/4inch NPT connection to facilitate its direct connection to a compression tank.
Air separator shall be designed for a maximum working pressure of 125 psi at 375degreesF.
Air separator shall be painted with (1) coat of air dry enamel.
Air separator shall have a low velocity chamber with integral baffles and diffuser tube for proper air separation and elimination.
Air Eliminator and Dirt Separator:
Furnish and install, as shown on Drawings and schedule, a full flow coalescing type combination air eliminator and dirt separator for hot and chilled water systems. Selection shall be based upon system flow with pipe size as a minimum in accordance with the basis of design. In no case shall entering velocity exceed 10feet per second.
Separator shall be fabricated steel, rated for 150psig working pressure, stamped and registered in accordance with ASME Section VIII, Division1, for unfired pressure vessels, and include (2)equal chambers above and below the inlet/outlet nozzles. Vessel diameter and height above and below the inlet/outlet connections must be equal to the basis of design.
Unit shall include internal Spirotube7 elements filling the entire vessel to suppress turbulence and provide air elimination efficiency of 100percent free air and 99.6percent dissolved air at the installed location. Dirt separation efficiency shall be a minimum of 80percent of all particles 30micron and larger within 100 passes. Elements must consist of a copper core tube with continuous wound copper wire medium permanently attached and followed by a separate continuous wound copper wire permanently affixed.
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Each unit shall have a separate venting chamber to prevent system contaminants from harming the float and venting valve operation. At the top of the venting chamber shall be an integral full port float actuated brass venting mechanism. Units shall include a valved side tap to flush floating dirt or liquids and for quick bleeding of large amounts of air during system fill or refill. Basis of design for the air eliminator/dirt separator shall be Spirovent Series VDT or VHT as manufactured by Spirotherm, Inc., or Owner approved equal as noted.
Optional Series VDN or VHN by Spirotherm, Inc. shall include removable lower head for internal inspection if so noted on Drawings and schedule.
COMPRESSION (EXPANSION) TANKS
Bladder Type Compression Tank:
Provide a removable bladder type compression tank, for permanent separation of air and water, as manufactured by Taco, Inc. or Owner approved equal.
Provide pressure relief valves for tanks 100 gallons or larger.
All wetted surfaces shall be of FDA approved materials for potable water applications.
Bladder shall be of a heavy butyl material and shall be removable for inspection.
Tank shall be designed, constructed, and stamped for a working pressure of 125psig and an operating temperature of 240degreesF.
Compression tank shall be painted with (1) coat of air dry enamel.
Tank shall be furnished with the following:
Ring Stand as applicable
Air Section Drain Fitting and Fluid Section Drain Fitting
System Connection
Charging Valve and Auxiliary Air Connection
Lifting Ring or Lug
Sight Glass
Airtrol Tank Fitting:
Cast iron compression tank airtrol tank fitting shall be designed to establish the correct initial air to water ratio in the compression tank when filling the system.
Tank fitting shall be painted with (1) coat of air dry enamel paint.
Tank fitting shall have an air separating trap to ensure the migration of free air from the boiler to the compression tank during the heating cycle. Tank fitting shall also have an integral liquid level control baffle to prevent gravity backflow of air absorbing cooler water from the compression tank to the boiler during the cooling down cycle.
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Tank fitting shall include a manual vent to facilitate adjusting air volume in the tank. Tank fitting shall be designed to a maximum working pressure of 125psi at 250degreesF.
SOLIDS SEPARATOR
Capacity: Separator shall remove 98percent, by weight, of separable solids, 200mesh and larger.
Separator Design Features: Separator shall have a tangential entry into the acceptance chamber; the liquid/solids are drawn through internal tangential slots and accelerated into the reduced diameter separation cylinder. Solids heavier than the carrying liquid shall be centrifugally spiraled down the perimeter of the separation cylinder past the deflector spool and accumulate in the separator's collection chamber.
Liquid (free of separable solids) will follow the vortex created and centered on the deflector stool up through the interior of the separation cylinder and into the vortex finder, the separator outlet.
Separator shall also incorporate a pressure relief line from the collection chamber to the venturi located in the tangential inlet to assist separation of quiescent solids sedimentation in the collection chamber. Solids accumulation shall also be facilitated by the baffle spin arrestor below the deflector stool in the collection chamber.
Unit shall be provided with a closed liquid recovery system.
Separator Construction:
Fabricate separator of carbon steel with shell material S.A.36, S.A.53B, A120 or other quality grade. Head material S.A.E.285C. Flanges shall be 150pound, A.N.S.I., Raised Face.
Paint coating shall be Mactek Line Enamel, F-9056 Laval Blue.
Closed Liquid Recovery Systems:
Retention Vessel: Carbon steel, minimum thickness of 3/16 inch. Internal epoxy coating (air dried).
Retention Vessel Lid: Carbon steel dome, with Tbolt closure.
Purge Collector Bags: Polyesterfelt material, 50micron rating. Two bags shall be provided with CRS816B.
Air Relief Valve: Rightangle design, pushbutton type.
Valve Package: Inlet and outlet assemblies shall contain the following:
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Inlet: Union, Ball Valve, and Sight Glass
Outlet Sight Glass, Flow Control Orifice, Ball Valve, and Union
SIDE STREAM FILTER
Filter Housing: Housing shall be minimum of 304 stainless steel.
1. Internal components shall be rated to the temperature of the system to which they are filtering.
Hinged Lid: Hinged lid shall be 304 stainless steel with clamps and washers.
Filter Media:
Provide 2 sets each of 50 micron rated and 25 micron rated cartridges.
Cartridges shall be rated for 200degreesFoperating temperature for hot water systems.
Connections: Inlet and outlet connection shall be no smaller than 1” female threaded N.P.T.on opposite sides of housing.
Housing shall have a 3/4inch drain fitting at bottom of unit.
Capacity: Units shall be sized to accept at least 10% of maximum GPM or flow of system it is attached to.
Solids Collection Capacity: 25 Pounds
Liquid Retention Capacity: 3.1 Gallons
Pressure and Temperature Ratings:
Maximum Working Pressure: 125 psi
Maximum Operating Temperatures: 200 Degrees F
Indicator Package: Provide with indicator package consisting of (1) inlet and outlet gauge rated to 0-60 psi., (1) gauge to show pressure drop. (Provide rigid piping as indicated on Drawing Detail Sheets.
CHEMICAL FEEDER
Manual Feed: Feeder shall be supplied with 1inch intake, 1inch return, 1inch drain valves, 1inch filling funnel with valve, 3/8inch air release valve, and miscellaneous fittings for connection of fill and drain accessories. Feeder shall be designed for a maximum pressure of 300 psi.
GLYCOL MAKE-UP PACKAGE
General Requirements:
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Contractor shall supply and install, as indicated on Drawings and in Specifications, a prefabricated, autonomous make-up package for each glycol system: hot water and chilled water.
The package shall be designed to occupy a minimum amount of floor space to operate on a standard 110 volt, 60 Hertz electrical circuit, and to maintain a fill pressure in the glycol system of 50 psig.
Pump shall be controlled from a manual toggle switch (furnished with unit). It shall feature a cut-off and alarm arrangement which will stop the pump in case of excessive pressure, or a low solution level, and activate an audible (which can be silenced) and a visual alarm. A 110 volt signal shall also be available for a remote alarm connection to the Energy Management System.
A translucent polyethylene solution container, complete with lid, shall be mounted on the pumping assembly and shall include a strainer and a shutoff valve.
Pumping assembly shall be mounted in a sturdy steel frame with legs to keep it off the floor. It shall include a 1.8 gpm at 50psig pump, 1/3 horsepower motor, magnetic starter, pressure tank with pressure control, priming valve, PRV, shutoff valve, and pressure gauge. It shall be connected to the system with a 1/2inch NPT connection.
AUTOMATIC FLOW CONTROL VALVES (AFCV)
General Requirements: Flow control valves shall be tamper proof, factory calibrated, automatic pressure compensating type. Each valve shall limit flow rates within a range of plus or minus 5percent, regardless of system pressure fluctuations. Valve body material shall be suitable for the designed system piping requirements, with internal working parts of stainless steel construction. There shall be (2) body tappings with P/T test ports for connection of flow measuring instrumentation. Provide valves with a metal tag, chain, and stamped for system identification. Automatic flow control valves shall be as indicated on Drawings.
FLOW MEASURING STATIONS
General Requirements: Provide a venturi style water flow measurement device with stainless steel/carbon steel body at all branch piping and pumps. Standard rating of system shall be 250psi and 250degreeF water.
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Contractor shall use a venturi type balance devices on piping 2” or larger and items which may vary in GPM volume. Some applications require a flow limiting valve or ball valve type isolation valves.
All flow fittings shall be supplied with a permanently affixed tab listing size, model, rated GPM, and corresponding pressure drop.
All flow devices shall have ports and/or quick connection for TAB readings.
BALANCE DEVICES AT TERMINALS
General Requirements: Provide a pressure independent auto flow type balance device rated for 250 PSI and 250 degrees. These balance valves shall be used at terminals with 2” and smaller piping. The general intent is to use pressure independent balance devices and pressure dependent control valves.
MPS requires a pressure independent auto flow type balance device on pipe 2” and under. Bell and Gossett Circuit Sentry, Hays, or Griswold pressure independent auto flow type balance devices are approved. No substitution to calibrated ball valves or venturis is allowed.
All pressure independent balance devices shall have a permanently affixed tag listing size, rated GPM, rated pressure drop and hydronic component served.