Chilled Beam Design Guide - TROX

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Specification DID300 DID300 Series Active Chilled Beams PART 1- GENERAL 1.01 Summary This section describes the active chilled beams. 1.02 Submittals Submit product data for all items complete with the following information: 1. Operating weights and dimensions of all unit assemblies. 2. Performance data, including sensible and latent cooling capacities, nozzle types, primary and total supply (primary plus induced) airflow rates, chilled (and where applicable hot) water flow rates, noise levels in octave bands, air and water side pressure losses and maximum discharge air throw values. 3. Construction details including manufacturers recommendations for installation, mounting and connection. PART 2- PRODUCTS 2.01 General Materials and products required for the work of this section shall not contain asbestos, polychlorinated biphenyls (PCB) or other hazardous materials identified by the engineer or owner. Approved Manufacturers: These specifications set forth the minimum requirements for the active chilled beams to be accepted for this project. Products provided by the following manufacturers will be deemed acceptable provided they meet all of the construction and performance requirements of this specification: 1. TROX 2.02 Design 1. Furnish and install TROX DID301 (single slot) and/or DID302 (two slot) series active chilled beams of sizes and capacities as indicated on the drawings and within the mechanical equipment schedules. The quantity and length of the beams shall be as shown on the drawings, without EXCEPTION. The beams shall be constructed and delivered to the job site as single units. 2. The face of the beam shall consist of a room air induction section of 50% free area perforated steel flanked by two linear supply slots (or an OPTIONAL linear bar grille with a 70% free area face). The entire visible face section shall be finished in white powder coat paint or as specified by the architect. All visible internal surfaces shall be flat black. 3. Beams shall be provided with side and end details which will allow its integration into the applicable (nominal 12 inch wide) acoustical ceiling grid as specified by the architect. Beams used for exposed mounting applications shall include factory mounted “Coanda” plates to assure a horizontal discharge of the supply air. 4. The beams shall consist of a minimum 20 gauge galvanized steel housing encasing the integral sensible cooling coil and a plenum feeing a series of induction nozzles. A side entry primary air duct connection shall be provided with a nominal five (5) or six (6) inch round spigot. The overall height of the beams shall not exceed 9½” 5. Beams shall incorporate provisions for measurement of their primary airflow rate. The measurement location must be accessible from the face of the beam and require a single pressure differential measurement. Airflow calibration charts that relate the measurement to the primary airflow rate shall be furnished with the beams. 6. (OPTIONAL) Each beam shall be furnished with a separate volume flow limiter for mounting in the primary air duct by the installing contractor. This device shall allow field adjustment of a maximum primary air flow rate that is maintained independent of any static pressure changes in the inlet ductwork. The volume flow limiter shall add no more than 0.20 inches H 2 O pressure drop to the primary air delivery system and shall not require any control or power connections. 7. When furnished in a 2 pipe configuration, the assembly shall contain two (2) separate chilled water coils with single supply and return connections. Four pipe connections shall require separate connections for their chilled and hot water supply. The coils shall be mounted vertically and (non-piped) condensate trays shall be furnished directly beneath them. The coils shall be manufactured with seamless copper tubing (½” outside diameter) with minimum .025 inch wall thickness mechanically fixed to aluminum fins. The aluminum fins shall be limited to no more than ten (10) fins per inch. The beam shall have a working pressure of at least 300 PSI, be factory tested for leakage at a minimum pressure of 360 PSI. Each chilled beam shall be provided with factory integrated drain fittings. Unless otherwise specified, coil connections shall be ½” O.D. bare 66
Specification DID300 copper for field sweating to the water supply circuit. Connections to 2 pipe coils shall extend from left end of the beam (when viewing into the primary air connection spigot) and shall be at least 1½” long to facilitate field connection (by others). 8. (OPTIONAL) The chilled water coil shall be provided with NPT male threaded fittings where specified. These fittings must be suitable for field connection to a similar NPT female flexible hose. 9. Beams shall be delivered clean, flushed and capped to prevent ingress of dirt. 2.03 Performance All performance shall be in compliance with that shown on the equipment schedule. Acoustical testing shall have been performed in accordance with ISO 3741. Coils shall be rated in accordance with ARI Standard 410, but their cooling and heating capacities shall be established in accordance to European Standard EN15116 for the specific application on the inlet side of the submitted chilled beam. Evidence of this testing must be included in the submittal. Primary airflow rates shall not result in supply (primary plus induced) airflow rates in excess of 40 CFM per linear foot of beam. Chilled water flow rates to the beams shall be limited to that which results in a maximum ten (10) foot head loss. Water flow velocities through the beam shall not exceed 4 FPS. 3. Before connecting the supply water system(s) to the beams, contractor shall flush the piping system(s) to assure that all debris and other matter have been removed. 4. Contractor shall perform connection of beams to the chilled water circuit by method specified (hard connection using sweated connection or connection using flexible hoses. 5. Flexible connector hoses shall be furnished by others (optionally by the manufacturer). Hoses shall be twenty four (24) inches in length and suitable for operation with a bend radius as small as five (5) inches. Such hoses shall be 100% tested and certified for no leakage at 500 PSI. Connector hoses shall consist of a PFTE lined hose with a wire braided jacket. The hoses shall be suitable for operation in an environment between -40 and 200˚F, rated for a least 300 PSI and tested for leakage at a minimum pressure of 360 PSI. Contractor shall assure that the chilled water supplying the beams has been properly treated in accordance to BSRIA publication AG 2/93. 6. No power or direct control connections shall be required for the operation of the chilled beam. 3.03 Cleaning and Protection Protect units before, during and after installation. Damaged material due to improper site protection shall be cause for rejection. Clean equipment, repair damaged finishes as required to restore beams to as-new appearance. PART 3- EXECUTION 3.02 Installation 1. Coordinate the size, tagging and capacity of the beams to their proper location. 2. (RECOMMENDED INSTALLATION PROCE- DURE) Chilled beams up to six feet in length shall be independently suspended from the structure above by a four (4) threaded rods of ⅜” diameter (provided by the installing contractor). For beams beyond six feet in length, six (6) threaded rods of ⅜” diameter. The upper end of the rods shall be suspended from strut channels that are a) mounted perpendicular to the beam length and b) at least four inches wider than the beam to facilitate relocation of the threaded rods along their length. The rods shall be fixed to factory mounting brackets on the beam that allow repositioning (at least four inches) along its length. The beam shall then be positioned above the acoustical ceiling grid and lowered into the grid module by adjusting the nuts connecting the threaded rods to the beam. 67
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TB031412 Chilled Beam Design Guide
Page 3 and 4:
Introduction Chilled beams have bee
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Active Chilled Beams TROX Passive C
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Active Chilled Beams DID-E series b
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Applications Comfort and IAQ benefi
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Multi-Service Chilled Beams Multi-s
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Multi-Service Chilled Beams signifi
Page 15 and 16: Airside Design Consideration In ord
Page 17 and 18: Airside Design Considerations Space
Page 19 and 20: Water Side Design Considerations WA
Page 21 and 22: Control Strategies CHILLED BEAM CON
Page 23 and 24: Control Strategies The chilled beam
Page 25 and 26: Installation and Commissioning When
Page 27 and 28: Passive Beam Selection CHILLED BEAM
Page 29 and 30: Passive Beam Performance Beam Width
Page 31 and 32: Passive Beam Selection The required
Page 33 and 34: Active Beam Selection and Location
Page 35 and 36: Active Beam Selection Examples Acti
Page 37 and 38: Active Beam Selection Examples The
Page 39 and 40: Chilled Water Pressure Drop (FT H2O
Page 41 and 42: Hot Water Pressure Drop (FT H2O) Se
Page 43 and 44: Hot Water Pressure Drop (FT H2O) Se
Page 45 and 46: Sensible Cooling Capacity, BTUH/LF
Page 49 and 50: PRIMARY AIR COOLING Net Sensible He
Page 51 and 52: PRIMARY AIR COOLING Sensible Coolin
Page 53 and 54: PRIMARY AIR COOLING Sensible Coolin
Page 55 and 56: PRIMARY AIR COOLING Net Sensible He
Page 61 and 62: Net Sensible Heating Capacity, BTUH
Page 63 and 64: Specification DID600 drain fittings
Page 65: Specification DID620 8. (OPTIONAL)
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Chilled Beam Design Guide - TROX

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