COMMERCIAL PIPING SYSTEMS CANADA REFERENCE GUIDE Uponor PEX-a Pipe Support Commercial Piping Systems Engineer Reference Guide Uponor crosslinked polyethylene (PEX-a) pipe and ProPEX expansion fittings offer value, durability and performance to your commercial plumbing and hydronic distribution piping projects. With more than 40 years of service in installations around the world, Uponor products and systems are the proven solution that professionals require to meet the demands of the commercial building industry. This reference guide is designed for architects, building officials, engineers and mechanical contractors interested in Uponor Commercial Piping Systems. It describes general installation recommendations that use Uponor PEX-a pipe and ProPEX fitting products. Uponor is not liable for installation practices that deviate from this guide or are not acceptable practices within the mechanical trades, codes or standards of practice. Always refer to local codes for additional requirements. For further assistance, refer to the Uponor Plumbing Design Assistance Manual (PDAM), Uponor Complete Design Assistance Manual (CDAM) or contact Uponor Technical Services at 888.994.7726 or technical.services@uponor.com. Uponor Crosslinked Polyethylene (PEX-a) Pipe The Core of Uponor Piping Systems Hydrostatic Temperature and Pressure Ratings Uponor maintains standard-grade ratings for Uponor PEX-a pipe as tested in accordance with PPI TR-. Uponor PEX-a products have the following temperature and pressure ratings: 9. C (200 F) at 550 kpa (80 psi) 82.2 C (80 F) at 690 kpa (00 psi) 2 C (7.4 F) at,05 kpa (60 psi) Excessive Short-term Temperature - Pressure Capacity: 99 C (20 F) at,04 kpa (50 psi) tested up to 720 hours In accordance with Section 6.6 of ASTM F876 (the standard for PEX which is referenced in CSA B24), the minimum hydrostatic burst pressure for 2" pipe is,09 kpa (480 psi) at 2 C (7.4 F). For 4" pipe and larger, the minimum burst pressure is,275 kpa (475 psi) at 2 C (7.4 F). Uponor s quality lab performs daily burst pressure testing on all pipe sizes above and beyond the ASTM F876 standard. All samples are tested at 2 C (7.4 F) and burst at an elevated pressure of 5,55 kpa/800 psi (+/- 20 psi) nearly twice the pressure requirement of ASTM F876.
Uponor PEX-a vs. Copper, CPVC, Black Iron Pipe (BIP) and Polypropylene Random (PP-R) Pipe Comparisons PEX-a Copper CPVC BIP PP-R Flexible, fewer required connections, reduces potential leak liability Yes No No No No Expands up to X its diameter to help resist freeze damage Yes No No No No Manufactured fitting connection, cannot be dry fit Yes No No No Yes One simple tool for connections Yes No No No No Resists corrosion, pitting and scaling Yes No Yes No Yes Dampens rushing water noise, eliminates water hammer Yes No Yes No Yes Retains more heat in hot water lines Yes No Yes No Yes Less susceptible to condensation on cold-water lines Yes No Yes No Yes Stable material costs; eliminates jobsite theft concerns Yes No Yes Yes Yes Pipe and fittings warranty Yes No Yes No Yes Uponor PEX-a Copper CPVC Black Iron Pipe (BIP) Polypropylene Random (PP-R) Not All PEX is Created Equal Uponor PEX-a PEX-b PEX-c Most tested and third-party listed of all PEX Highest degree of crosslinking (>80%) Hot crosslinking above the crystal melting temperature Most flexible of all PEX and allows kink reparability Shape memory ideal for cold-expansion ProPEX fittings Increased resistance to corrosion Lowest degree of crosslinking (65-70%) Crosslinking performed in a secondary, post-extrusion process Stiffer product No kink reparability Not ideal for cold-expansion fittings Standard insert fittings have less flow Lesser degree of crosslinking (70-75%) Cold crosslinking below the crystal melting temperature Less uniform, less consistent Stiffer product No kink reparability Not ideal for cold-expansion fittings Standard insert fittings have less flow 2
ProPEX Fittings vs. Standard Insert Fittings A Wall thickness Uponor ProPEX Cold Expansion Fitting Standard Insert Fitting ASTM F960 Brass ASTM F960 EP ASTM F807 Brass ASTM F259 Plastic 2" 0.057" 0.057" 0.028" 0.056" 4" 0.057" 0.057" 0.07" 0.082" B Flow path 2" C Internal diameter " 0.072" 0.072" 0.04" 0.00" 4" " 0.2 sq. inches 2.8 gpm @ 2.4 m/s (8 ft/s) 4.2 gpm @.7 m/s (2 ft/s) 0.278 sq. inches 6.9 gpm @ 2.4 m/s (8 ft/s) 0.4 gpm @.7 m/s (2 ft/s) 0.496 sq. inches 2.4 gpm @ 2.4 m/s (8 ft/s) 8.6 gpm @.7 m/s (2 ft/s) 0.6 sq. inches 2.9 gpm @ 2.4 m/s (8 ft/s) 4.4 gpm @.7 m/s (2 ft/s) 0.27 sq. inches 6.8 gpm @ 2.4 m/s (8 ft/s) 0.2 gpm @.7 m/s (2 ft/s) 0.488 sq. inches 2.2 gpm @ 2.4 m/s (8 ft/s) 8.2 gpm @.7 m/s (2 ft/s) 0.096 sq. inches 2.4 gpm @ 2.4 m/s (8 ft/s).6 gpm @.7 m/s (2 ft/s) 0.22 sq. inches 5.5 gpm @ 2.4 m/s (8 ft/s) 8. gpm @.7 m/s (2 ft/s) 0.96 sq. inches 9.9 gpm @ 2.4 m/s (8 ft/s) 4.8 gpm @.7 m/s (2 ft/s) 2" 0.78" 0.85" 0.50" 0.5" 4" 0.595" 0.590" 0.50" 0.460" " 0.795" 0.788" 0.70" 0.60" 0.078 sq. inches.9 gpm @ 2.4 m/s (8 ft/s) 2.9 gpm @.7 m/s (2 ft/s) 0.66 sq. inches 4. gpm @ 2.4 m/s (8 ft/s) 6.2 gpm @.7 m/s (2 ft/s) 0.292 sq. inches 7. gpm @ 2.4 m/s (8 ft/s) 0.9 gpm @.7 m/s (2 ft/s) C A - Wall thickness B - Flow path C Double and 70% the wall thickness greater flow 2 ProPEX F960 Expansion Fitting C - Internal diameter F807/F259 Insert Fitting When comparing 2" F960 with F807 brass fittings 2 When comparing " F960 engineered polymer (EP) with F259 plastic fittings ProPEX EP Tee Commercial EP Multiport Tee ProPEX EP Elbow Minimum Distance Between ProPEX Fittings Fitting Size Cut Length of Pipe 2" 6.5mm (2 2") 4" 88.9mm ( 2") ProPEX Transition Fittings " 4.mm (4 2") 4" 9.7mm (5 2") 2" 65.mm (6 2") 2" 90.5mm (7 2")
Uponor PEX-a Codes and Standards (Includes both Canada and U.S.) Codes: ICC, IPC, IRC, IMC, UPC, UMC, NSPC, HUD, UFGS, NPC of Canada, NBC of Canada Listings: cnsfus-fs (up to 2"), cnsfus-pw, cqaius, UL, CSA, WH, ETL, PPI TR-4, ICC-ES, IAPMO, BMEC, CCMC Standards Compliance: AWWA C904, CSA B7.5, CSA B24, ASTM F876, ASTM F877, ASTM F202, ASTM E84/ULC S02.2, ASTM E9/UL 26/ULC S0, ASTM E84/ULC S5, UL 82/ULC ORD C99P, NSF/ANSI-4, NSF/ANSI-6 Plenum Listings All Uponor PEX-a pipe, Uponor ProPEX Rings, Uponor engineered polymer (EP) fittings, and ProPEX connections and valves were tested and certified for installation in return-air plenums. This applies to piping runs with or without Uponor EP fittings as described below. ½" Uponor PEX-a (Un-insulated) There is no limitation on spacing for adjacent runs of un-insulated ½" Uponor PEX-a pipe in a return-air plenum. Classified as to Surface Burning Characteristics ULC S02.2 Flame Spread Smoke Developed Nominal ½" size 25 or less 50 or less ¾" to " Uponor PEX-a (Un-insulated) Adjacent runs of un-insulated ¾" to " Uponor PEX-a pipe in a return-air plenum must be separated by 8". Classified as to Surface Burning Characteristics ULC S02.2 Flame Spread Smoke Developed Nominal ¾" to " size 25 or less 50 or less Up to " Uponor PEX-a (Insulated) Adjacent runs of up to " Uponor PEX-a pipe encased in ½" fiberglass insulation in a return-air plenum shall have no limitation on spacing. Classified as to Surface Burning Characteristics ULC S02.2 Flame Spread Smoke Developed Up to " Uponor PEX-a with ½" insulation 25 or less 50 or less Up to 2" Uponor PEX-a (Water-filled test) Adjacent runs of up to 2" Uponor PEX-a pipe with water-filled in a return-air plenum shall have no limitation on spacing. Classified as to Surface Burning Characteristics ULC S02.2 Flame Spread Smoke Developed Up to 2" Uponor PEX-a with water filled 25 or less 50 or less Per certification agencies fire-resistance classifications and follow-up service inspections, ongoing verification of product compliance is achieved through quarterly inspection audits at manufacturing location(s) during which a review of the product s process, suppliers and in-house quality control procedure is conducted. This audit ensures the product has not changed since the ULC S02.2 testing was conducted and will still meet the requisite standards. Uponor PEX-a Pipe Support 4
Concrete Floor/Ceiling Assembly (ULC ITS Design No. UW/FCA 20-0/02) Steel-stud Wall Assembly (ULC ITS Design No. UW/WA 60-0) Non-rated wall or non-load bearing wall assembly with Uponor AquaPEX pipe installed per CAN/ULC S0 (refer to ULC Design No. UW/WA 60-0) For CAN/ULC S0 steel-stud rated walls maximum Uponor AquaPEX pipe of. lbs./ft. and not to exceed total weight per stud cavity of 8.0 lbs. Uponor AquaPEX pipe riser Steel stud Copper manifold or Uponor EP multi-port tee with a weight not exceeding.0 lbs. per cavity (typical) Uponor PEX one or five-loop stand-up bracket or metal/2x4 wood pre-drilled mounting bracket on top side of slab 6½" minimum restrained or un-restrained Structural rebar (two layers) Fire-resistant Construction Ratings Construction Type Non-combustible Concrete/Steel Construction Wood Frame Construction CAN/ULC S0 Assembly ITS Design No. Type UW/FCA 20-0/02 Floor/Ceiling G524 Walls UW/WA 60-0 Floor/Ceiling UW/FCA 60-0 Walls UW/WA 60-02 Recommended mid-story guide (see riser details on pages 6-7) Riser clamp (see riser details on pages 6-7) Firestop listed to CAN/ULC S0 (must be Uponor AquaPEX pipe compatible) CAN/ULC S0 slab listed with Uponor AquaPEX pipe only (refer to ULC ITS Design No. UW/FCA 20-0/02) Maximum tubing density is cubic inches with or without sleeve per one cubic foot of concrete (equivalent of " average spacing through slab between ½" Uponor AquaPEX pipe); polyethylene sleeve ¾" to " nominal tubing or PVC conduit " to ¼" nominal and ½" to 2" Uponor AquaPEX pipe Risers Risers typically feature Uponor PEX-a pipe in sizes from ¼" to 2" with CTS riser clamps at the base of each floor. The installation should also include a riser clamp at the top of every-other story for plumbing and every story for hydronic distribution to limit the expansion and contraction of the pipe. This translates to an expansion of about 8.mm (½") in 0.46m (25 ft.) at a. C (60 F) Delta T [installed at 5.6 C (60 F) with an operating temp. of 48.9 C (20 F)]. In this application, the piping will snake slightly in areas where it is not constrained, requiring the use of mid-story guides. Use discarded framing as a backer plate for the guide. Ensure the guide has no sharp edges or is fire-rated for risers in walls requiring fire-resistant construction. Through Penetrant Firestop The following firestop manufacturers offer PEX solutions as tested in accordance with ULC S5. M TM Hilti HoldRite HydroFlame TM Metacaulk Passive Fire Protection Partners ProSet Systems Tremco See firestop manufacturer s website for selection of appropriate fire assembly and product. 2" Uponor PEX-a Expansion Joint Expansion and Contraction Because PEX pipe expands at a rate of 27.94mm per 0.4m per 5.56 C (." per 00' per 0 F) temperature rise, an expansion joint, offset or change in direction is necessary to accommodate the expansion and contraction of the pipe. Uponor offers a preformed 2" Uponor AquaPEX Expansion Joint (F852000) and 2" Wirsbo hepex Expansion Joint (A992000) to make expansion joint installations more efficient. 5
Plumbing Riser Detail Uponor AquaPEX pipe risers Appropriate firestop material (must be Uponor AquaPEX compatible) Use appropriate floor assembly per code Overhead plumbing distribution ProPEX EP tee Branch piping isolation valve Plastic grommet required if pentrating steel stud EP multiport tee Mid-story guide recommended between each floor Use appropriate wall assembly per code Fixture termination rough-in assembly Riser clamp required at the base of each floor Wall-framing member Pre-sleeved Uponor AquaPEX In-slab plumbing distribution Refer to appropriate fire assembly listing for penetration requirements Riser clamp required at the top of every-other floor to limit expansion and contraction to 7.62m (25 ft.) 6
Hydronic Distribution Piping Riser Detail Wirsbo hepex TM hot and chilled water supply and return risers Appropriate firestop material (must be Wirsbo hepex compatible) Riser clamp required at the top of each floor ProPEX EP tee Fan Coil Unit (FCU) Plastic bend support Mid-story guide recommended between each floor ProPEX transition fitting for valve assembly Wall-framing member Use appropriate wall assembly per code Riser clamp required at the base of each floor Riser clamp required at the top of each floor ProPEX EP tee Fan Coil Unit (FCU) Fan Coil Unit (FCU) Plastic bend support Note: Other terminal units, such as heat pumps, radiators, VAV boxes and chilled beams can be supplied through similar means. Mid-story guide recommended between each floor Refer to appropriate fire assembly listing for penetration requirements Riser clamp required at the base of each floor Riser clamp required at the top of each floor 7
Typical Suspended Piping Installation Detail Steel Joist Strapping Uponor PEX-a Pipe Support Note: The above diagram is constructed based on U.S. requirements. Uponor AquaPEX Pipe Uponor ProPEX Expansion Ring Uponor ProPEX EP Fitting Pipe Support Trapeze Strapping For suspended runs of piping, Uponor PEX-a can be supported by the same conventional means as metallic pipe using copper tube size (CTS) pipe hangers or supports. Uponor recommends using hangers and supports designed for use with plastic pipe. Use PEX-a pipe support or pipe support channel that continuously supports the pipe to achieve nearly the same support spacing as copper pipe. Maximum Distance Between PEX-a Pipe Supports Pipe Size Maximum Distance ½" to 2" 0.8m (2") Strapping Guidelines for Clamps and Hanger Applications For more information regarding support solutions, contact Uponor Technical Services at 888.994.7726 or technical.services@uponor.com. Application Clamps Hangers Maximum Distance Greater than.2m (48") = tie mid-span Less than.2m (48") = 2 ties equally spaced Greater than.2m (48") = ties [ mid-span and on each end placed 50.8mm (2") from end of support] 8
Surge Pressure and Sound Intensity The main sources of sound in a water piping system are cavitation, surface roughness and water hammer caused by surge pressure. Cavitation is generally a design issue, so the question is which material will absorb more of the sound if it occurs? Typical polymers will absorb sound in the range of 0 db/cm, whereas metals are on the order of 0. to.0 db/cm. For a given change in velocity, the intensity of sound from a copper pipe will be at least 8 times higher than that of PEX-a pipe and peak pressures caused by a quickacting valve could be reduced by 8% to 40% by utilizing PEX-a in lieu of copper pipe. PEX-a offers up to Surge Pressure Generated in Response to a Quick-acting Valve (PPI Report #285) Pipe Material 40% Maximum Measured Pressure, psi Flow Rate, gpm 2 2.5 4 6 2" Uponor PEX-a 6 50 69 9 244 2" PEX-b 4 68 77 22 274 2" CPVC 55 7 20 222 296 2" Type L Copper 94 29 266 8 422 Pressure response measurements include 44 kpa (60 psi) static pressure. Closing speed of quick-acting valve estimated at 25 milliseconds. Test performed at 2.2 C (54 F) cold water temperature. reduction in surge pressure Commercial Flush Bank Detail Water hammer arrestor where required by code (exact locations vary by manufacturer) Bend support (½" - ¾" typical) Uponor AquaPEX pipe supply (size varies) Isolation ball valve (typical) Stud wall assembly Uponor AquaPEX pipe header (size varies) Uponor ProPEX EP tee Support Vent pipe Waste pipe Copper stub Urinal carrier behind Copper carrier bracket Water closet carrier 9
Uponor Logic Plumbing Uponor Logic is the smart way to plumb, using flexible PEX-a pipe and multiport tees to minimize connections and maximize system performance. With an Uponor Logic layout, plumbing systems typically require fewer fittings than a trunk-and-branch design and less tubing than a home-run layout. Uponor Logic Number of Fittings 9 Number of Connections Pipe Size Length 2" 79.6m (26 ft.) 4".6m (8 ft.) ".5m (5 ft.) Total 92.7m (04 ft.) Home Run Number of Fittings 7 Number of Connections 27 Pipe Size Length 2" 44.8m (475 ft.) 4" 9.m (0 ft.) ".5m (5 ft.) Total 55.4m (50 ft.) Critical Path = HWS - W.H. to Tub CWS = 5.6 C (60 F) HWS = 48.9 C (20 F) Mixed = 4. C (0 F) NPC Tub = 4 wsfu = 4 gpm Hot-water Multiplier = 0.8 NPC Tub x Hot-water Multiplier =.2 gpm I.D. (in.) Distance (ft.) Volume (gal.) Velocity Pressure Loss (psi) HW Time-to-fixture System (ft./sec.) Type 2" 4" 2" 4" 2" 4" Total 2" 4" 2" 4" Total Critical Path - Tub Only Copper T & B 0.527 0.745 0.47 0.746 0.89 4.8 2.4.22 0.56.78 6. sec. Home Run 0.475 0.67 2 9 0.294 0.65 0.459 5.8 4.6 0.252 4.42 8. sec. Uponor Logic 0.475 0.67 9 7 0.74 0.2 0.486 5.8 2.47 0.476 2.946 8.7 sec. 0
Copper Trunk and Branch Number of Fittings 9 Number of Connections 9 Pipe Size Length 2" 7.m (24 ft.) 4" 22.2m (7 ft.) 40 0 20 0 Copper T&B Homerun Uponor Logic ".5m (5 ft.) Total 95.m (2 ft.) 0 Fittings 00 90 80 70 60 50 40 0 20 0 0 Connections Copper T&B Homerun Uponor Logic 600 500 400 00 200 00 0 Feet of Pipe Copper T&B Homerun Uponor Logic Uponor Logic Delivers Hot water to fixtures 45% faster than copper trunk and branch Hot water to fixtures with % less pressure loss compared to home run Over 65% fewer fittings and connections than trunk and branch 40% less tubing than home run
Plumbing Systems Pipe Sizing an Uponor AquaPEX System Uponor recommends using the uniform friction loss method of pipe sizing. After determining the system s friction loss [psi/0.48m (00 ft.)] by performing a building supply water calculation, develop a water size chart for each system s water temperature and pipe size. To do this, reference the Uponor AquaPEX flow charts on Uponorpro.com and convert the gallons per minute (gpm) to fixture units for each nominal pipe size or use Uponor s Pipe Sizing Calculator at www.uponorpro.com/calculator. Per manufacturer s recommendations, Uponor allows the dedicated fixture supply pipe to be of the same nominal size as the fixture being supplied, provided the dedicated pipe is no longer than 6.m (20 ft.) from a uniform-friction-loss-sized pipe. Maximum Velocity NPC 200 section 2.6.. indicates the potable-water system shall be designed, fabricated and installed in accordance with good engineering practice, such as described in the ASHRAE Handbooks and ASPE Data Books. ASPE Data Book Vol. 2 (20/202) Chapter 5 Cold Water Systems, indicates that the velocity is determined as the meters per second (m/s) of the piping used specified by the manufacturer at each location. Uponor recommends a velocity of.0 m/s (0 ft/s), which is the same as shown in NPC 200 Table A-2.6...(2)A. Maximum velocity through Uponor AquaPEX systems shall be.7 m/s (2 ft/s). This maximum velocity may be used as a basis for the design of a plumbing system if there is sufficient available pressure. Please consult with Uponor Design Services at 888.994.7726 or technical.services@uponor.com to ensure the proposed plumbing system can accommodate the maximum velocity of.7 m/s (2 ft/s). www.uponorpro.com/calculator Pressure Loss (psi) per 00 Feet of Uponor AquaPEX Pipe at 5.6 C (60 F) 000.0 Velocity 2 ft./second Velocity ft./second Velocity 0 ft./second Velocity 9 ft./second Velocity 8 ft./second Velocity 7 ft./second Velocity 6 ft./second Velocity 4 ft./second Velocity 5 ft./second 200.0 Velocity ft./second Velocity 2 ft./second " PEX Tubing 2" PEX Tubing / 2" PEX Tubing / 4 " PEX Tubing " PEX Tubing / 4 " PEX Tubing 20.0 Flow Rate (gpm) 2.0 / 2" PEX Tubing / 8 " PEX Tubing 0..0 Pressure Loss (psi) 0.0 00.0 0.2 2
Pre-insulated Uponor AquaPEX is available in: 2"-2" pipe sizes with 2" PEX-foam insulation 4"-" pipe sizes with " PEX-foam insulation (special order) Thermal Conductivity PEX-a pipe has a very low coefficient of thermal conductivity, 2.628 Btu in/(hr ft² F), whereas copper has a coefficient of thermal conductivity between 2,080 and 2,77 Btu in/(hr ft² F) depending on wall thickness (Type K, L or M). Therefore, PEX-a pipe does not sweat like copper does. PEX-a has superior insulative qualities when compared to copper in the same application. Even though the difference in R-Value is relatively small, the higher R-Value with a PEX-a pipe will always result in less heat loss when compared to the same nominal size copper pipe. Uponor recommends insulating all return piping as well as any hydronic distribution piping (heating/chilled) to conserve energy and maintain desired fluid temperature. Uponor also recommends insulating any piping installed in an unconditioned space or poorly ventilated areas with excessive moisture content. Pre-insulated AquaPEX R-value/Heat Loss Pipe Size R-value Heat Loss at 70 F ΔT 2". 8.9 Btu/(hr ft² F) 4".. Btu/(hr ft² F) ".0. Btu/(hr ft² F) 4" 2.9 5.2 Btu/(hr ft² F) 2" 2.8 7. Btu/(hr ft² F) 2" 2.7 2.0 Btu/(hr ft² F) Pre-insulated Uponor AquaPEX consists of PEX-a pipe and closed cell, crosslinked polyethylene insulation with a thermal conductivity of 0.25 Btu in/(hr ft 2 F). Uninsulated PEX-a pipe offers 2% less heat loss compared to uninsulated copper pipe PEX-a vs. Copper Heat Loss Comparison Btu in/(h ft² F) Delta T ( F) 20 40 60 80 00 Nominal Pipe Sizes Insulation Thickness 0" 2" " (K=0.24) 2" 0" 2" " 2" 0" 2" " 2" 0" 2" " 2" 0" 2" " 2" Uponor PEX-a 5.44 2.22.6.7 0.89 4.44.25 2.74 6. 6.65 4.88 4.0 2.78 8.87 6.5 5.47 27.22.09 8. 6.84 2" Type L Copper 5.76 2.24.6.7.52 4.47.27 2.74 7.27 6.7 4.90 4. 2.0 8.95 6.5 5.48 28.79.8 8.6 6.85 4" " 4" 2" 2" " Uponor PEX-a 7.48 2.7.95.6 4.96 5.47.89.2 22.44 8.20 5.84 4.82 29.92 0.94 7.78 6.4 7.40.67 9.7 8.0 Type L Copper 8.06 2.77.96.6 6.2 5.54.9.22 24.8 8. 5.87 4.84 2.25.07 7.8 6.45 40..84 9.78 8.06 Uponor PEX-a 9.42.2 2.25.8 8.85 6.47 4.50.66 28.27 9.70 6.75 5.49 7.69 2.9 8.99 7. 47. 6.7.24 9.6 Type L Copper 0.6.29 2.27.84 20.7 6.58 4.5.68.09 9.86 6.80 5.52 4.46.5 9.06 7.6 5.82 6.44. 9.20 Uponor PEX-a.29.72 2.54 2.05 22.58 7.44 5.08 4.09.87.6 7.6 6.4 45.6 4.88 0.7 8.9 56.45 8.60 2.7 0.24 Type L Copper 2.67.80 2.57 2.06 25.4 7.60 5.4 4.2 8.00.40 7.70 6.8 50.67 5.20 0.27 8.24 6.4 9.00 2.84 0.0 Uponor PEX-a.08 4.20 2.8 2.26 26.5 8.40 5.66 4.5 9.2 2.60 8.49 6.77 52.0 6.79. 9.0 65.8 20.99 4.4.28 Type L Copper 4.97 4. 2.86 2.27 29.94 8.6 5.7 4.55 44.9 2.92 8.59 6.82 59.89 7.2.45 9.0 74.86 2.5 4.2.7 Uponor PEX-a 6.46 5..9 2.66 2.9 0.27 6.77 5. 49.9 5.40 0.6 7.99 65.85 20.54.55 0.65 82. 25.67 6.94.2 Type L Copper 9.58 5..45 2.69 9.6 0.6 6.89 5.8 58.7 5.94 0.4 8.08 78. 2.25.78 0.77 97.89 26.57 7.2.46 Uponor PEX-a 22.54 6.94 4.47.44 45.07.88 8.9 6.89 67.6 20.82.40 0. 90.4 27.76 7.86.77 2.68 4.70 22. 7.22 Type L Copper 28.79 7. 4.59.50 57.58 4.62 9.7 7.0 86.7 2.9.76 0.5 5.6 29.24 8.5 4.0 4.95 6.55 22.9 7.5 All calculations based on cylindrical thermal resistance methodology (ASPE/ASHRAE) Based on fluid velocity of 2.4 m/s (8 ft/s) at 7. C (60 F) (maximizing heat transfer from 00% water) Pipe convection set to be.76 Btu/hr ft² F (based on standard value for free convection of air) This heat loss comparison uses 0.24 Btu in/(hr ft 2 F) as the insulation thermal conductivity. This is a standard value for fiberglass pipe insulation at a 00 F mean temperature.
Hydronic Distribution Systems Pipe Sizing a Wirsbo hepex System Wirsbo hepex tubing is sized using the Darcy Wiesbach friction factor methodology. Sizing with this method allows for accurate calculation of head loss based on the internal roughness of Uponor s PEX-a pipe. The hydronic distribution pipe sizing tables on this page yield typical flow and BTU ranges based on specified pipe size, minimum velocity, maximum velocity, fluid type, fluid temperature, temperature differential (supply vs. return) and maximum head loss per 0.48m (00 ft.) of piping. Uponor s online hydronic sizing calculator is capable of generating flow tables for four-pipe hydronic distribution systems based on user specified inputs similar to the inputs used to create the tables on this page. This calculator allows the engineer/user to create easy-to-use tables that will accurately assist in system design. Note: Uponor recommends a minimum velocity of 0.46m (.5 ft/s) and a maximum velocity of 2.4m (8 ft/s) for hydronic distribution systems. The heating table is based on a. C (20 F) temperature differential and the chilled water table is based on a 5.56 C (0 F) temperature differential between supply and return. www.uponorpro.com/calculator Wirsbo hepex Hydronic Sizing Table Heating at. C (20 F) ΔT 00% Water at 7 C (60 F).2m (4 ft.) of Head Loss/0.48m (00 ft.) Min. Velocity = 0.46m (.5 ft/s) Max. Velocity =.7m (5.5 ft/s) Pipe Size BTU Range GPM Range Velocity (ft./sec.) Feet of Head per 00 ft. of Pipe 2" 8,00,000 0.8.0.50 2.00 2.5 4.00 5 8" 2,00 8,600.2.86.50 2.0.99 4.00 4" 5,500 27,600.65 2.76.50 2.50.64 4.00 " 27,00 54,600 2.7 5.46.50.00.20 4.00 4" 40,800 92,500 4.08 9.25.50.40 0.94 4.00 2" 56,800 47,800 5.68 4.78.50.90 0.76 4.00 2" 97,500 298,900 9.75 29.89.50 4.60 0.55 4.00 2 2" 48,500 524,800 4.85 52.48.50 5.0 0.42 4.00 " 2,200 774,00 2.2 77.4.50 5.50 0.4.54 2" 284,600,04,700 28.46 04.7.50 5.50 0.29 2.96 4" 68,800,52,00 6.88 5.2.50 5.50 0.24 2.54 Wirsbo hepex Hydronic Sizing Table Cooling at 5.56 C (0 F) ΔT 0% Propylene Glycol at 7.2 C (45 F).2m (4 ft.) of Head Loss/0.48m (00 ft.) Min. Velocity = 0.46m (.5 ft/s) Max. Velocity =.7m (5.5 ft/s) Pipe Size BTU Range GPM Range Velocity (ft./sec.) Feet of Head per 00 ft. of Pipe 2" N/A N/A N/A N/A 5 8" N/A N/A N/A N/A 4" 8,250 9,50.65.87.50.70.5 4.00 ",650 8,200 2.7.82.50 2.0 2.40 4.00 4" 20,400 2,650 4.08 6.5.50 2.40.84 4.00 2" 28,400 5,50 5.68 0.2.50 2.70.48 4.00 2" 48,750 07,200 9.75 2.44.50.0.04 4.00 2 2" 74,250 88,00 4.85 8.6.50.90 0.79 4.00 " 05,600 02,700 2.2 6.95.50 4.40 0.6 4.00 2" 42,00 455,400 28.46 92.98.50 4.90 0.52 4.00 4" 84,400 65,550 6.88 0..50 5.0 0.44 4.00 4
Ecoflex Pre-insulated Piping for Hydronic Distribution Uponor Ecoflex pre-insulated pipe features single or twin PEX-a service pipes surrounded by multilayer, PEX-foam insulation and covered by a corrugated, high-density polyethylene (HDPE) jacket. There are currently more than 0 different Ecoflex assembly configurations available. B A F A Heating Source C B Manifold C Remote Manifold D E D Radiant Loops E Snow Melting Loops F Ecoflex Supply and Return Piping Layout (Ecoflex vs. Suspended Piping) Ecoflex Suspended Piping Traditional Suspended Hydronic Perimeter Loop Distribution System Overlaid with an Underground Ecoflex Pre-insulated Distribution System 5
Uponorengineering.com The Engineer s Resource Portal The Uponor Engineering Resource Center is your single destination for designing and creating a desirable, costeffective and energy-efficient structure. This portal is custom-made especially for you, the engineer, to help you meet all your goals. Whether it s meeting specific LEED or other green-building certification standards or incorporating value engineering into a project, Uponor can provide all the tools and resources, including specifications, submittals, CAD details, instructional manuals, design guidelines and even industry resource links to get you moving and on your way to a successful build. Building Information Modeling (BIM) AutoDesk Seek Search Uponor http://seek.autodesk.com Building-DATA.net/TSI Uponor parts included in Building Data s content library for use with TSI MEP modeling software. www.building-data.net Specifications SpecAgent Import specification selections directly into your specification text. www.specagent.com CommPipingEngineer_RefGuide_CM00_06CA, Copyright 20 Uponor. Printed in the United States Uponor Design Services Uponor s full-service design department is staffed with professional designers and project managers with the experience, expertise and knowledge to lead your project from start to finish. Our team Uponor Ltd. 2000 Argentia Rd., Plaza, Ste. 200 Mississauga, ON L5N W CANADA holds the necessary credentials and qualifications to ensure your project meets all code requirements and incorporates the most efficient use of time and materials to maximize system performance. Tel: 888.994.7726 Fax: 800.68.957 www.uponorengineering.com 888.594.7726 design.services@uponor.com