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Evolution

Radiant panel system LPHW up to 90°C

Suspended ceiling grid or soffit mounting Vertical wall surface mounting

Standard widths 150mm to 900mm

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IntroductionEvolution by Dunham-Bush is an architectural radiant panel system, ideal for application in light industrial or commercial buildings. It is designed for use with low temperature hot water on either constant or variable temperature circuits. The unique heating effect from Evolution radiant panels will create comfort conditions at lower design air temperatures. Room occupants are heated directly, without the need to heat the air surrounding them.

Evolution can be installed in suspended ceilings, directly onto wall or ceiling surfaces or hung from drop rods. It is modular, giving the system designer great flexibility in selecting panels for any application. The standard finish is white polyester powder, but other finishes are available from the RAL or BS 4800 ranges.

AuthorityIt is accepted practice and policy atDunham-Bush to maintain exceptional standards in engineering and quality. To this end, Dunham-Bush operates a quality system and is registered as a company of assessed capability to BS EN ISO 9001 : 2008.

A one tube Evolution radiant panel consists of an aluminium alloy extruded plank, which has a plane radiating surface on one side and a semi-circular groove on the oppo-site side. A 15mm O.D. copper tube is retained in the groove by an extruded tube clamp, which completely encapsulates the tube. Planks are assembled and inter-locked, side by side, to produce multi-tube panels.

DescriptionStandard RangeThe range consists of one, two, four and six tube panels, in nominal lengths of 600mm to 3000mm, and in various tube configurations, as illustrated in the panel diagrams. All panels can be supplied in a range of styles, to suit the applications pictured below.

Style CG for suspended ceiling grid with ‘lay-in’ tilesStyle CS for ceiling surface or soffit mountingStyle FS for suspension from roof/soffit or steelworkStyle WS for mounting onto vertical walls

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Style CG (Ceiling Grid)

For installation into suspended ceiling grids with ‘lay-in’ type tiles. Can also be installed into solid plasterboard ceilings with perimeter trim.

Style FS (Free Suspended)

For installation into open roof or celiing voids. Can be hung from threaded drop rods or suspension wire

systems.

Style CS (Ceiling Surface)

Surface mount option from solid ceiling of soffit. Fully accessible from below.

Style WS (Wall Surface)

Vertical wall surface mount option. Can be installed at an angle in a cornice configuration.

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Style CG General Arrangement

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Style CG Panel Types

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Style CG Panel Runs

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Style CG Sections - 1 Tube & 2 Tube Panels

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Style CG Sections - 4 Tube & 6 Tube Panels

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Style CG Suspension Locations

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Style CG Panel Connections

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Style CS General Arrangement

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Style FS General Arrangement

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Style WS General Arrangement

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Style CS, FS & WS Panel Types

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Style CS, FS & WS Panel Runs

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Style CS, FS & WS Sections - 1 Tube & 2 Tube Panels

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Style CS, FS & WS Sections - 4 Tube & 6 Tube Panels

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Style FS Suspension Locations

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Style CS, FS & WS Panel Connections

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Performance

Total heat outputs, Watts per metre of nominal panel length

Mean water (°C)

Ambient air temperature

(°C)

Rated Thermal Output (W/m)

Styles CG CS & FS (BS EN 14037) Style WS (BS EN 442)

1T 2T 4T 6T 1T 2T 4T 6T

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16 41 82 164 246 52 104 207 311

18 38 75 150 225 47 95 190 284

20 34 68 137 205 43 86 172 258

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16 50 99 199 298 63 126 253 379

18 46 92 185 277 59 117 234 351

20 43 85 171 256 54 108 216 324

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16 59 117 235 352 75 150 300 450

18 55 110 220 330 70 140 281 421

20 51 103 206 309 65 131 262 393

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16 68 136 271 407 87 174 348 522

18 64 128 257 385 82 164 329 493

20 60 121 242 363 77 155 309 464

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16 77 155 309 464 100 199 398 597

18 73 147 294 441 95 189 378 567

20 70 139 279 418 90 179 358 537

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16 87 174 348 521 112 225 449 674

18 83 166 332 498 107 214 429 643

20 79 158 317 475 102 204 408 612

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16 97 193 387 580 125 251 502 753

18 93 186 371 557 120 240 481 721

20 89 178 355 533 115 230 460 690

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16 107 213 427 640 139 278 555 833

18 103 205 411 616 133 267 534 800

20 99 197 395 592 128 256 512 768

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16 117 234 468 701 152 305 610 914

18 113 226 451 677 147 294 588 882

20 109 218 435 653 141 283 566 849

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16 127 254 509 763 166 333 665 998

18 123 246 492 738 161 321 643 964

20 119 238 476 714 155 310 621 931

Performance equation where Q = rated thermal output per unit area (W/m²)

Q = Kd DTnStyles CG CS & FS (BS EN 14037) Style WS (BS EN 442)

Kd 4.650 5.225

n 1.210 1.245

Notes1. Thermal outputs are rated as defined in the relevant standard and are both radiant and convective.

2. Styles CG CS and FS; ~60% or total output is radiant; Style WS; ~53% of total output is radiant.

3. Outputs for Styles CG CS and FS are rated to BS EN 14037 Parts 1, 2 and 3, BS EN 14037 applies for horizontally mounted panels only.

4. Outputs for Style WS are rated to BS EN 442 Part 2.

5. Performance equation Q = Kd DTn

Where Q = rated thermal output (W/m2)

Kd = output factor, n = output exponent

DT = mean water temperature less ambient air temperature (K)

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Pressure drop (Pa/m) per tube or circuit; check layout drawing for no. of circuits.

Minimum water mass flow rates

Approximate dry masses of Evolution (kg)

1. Where a single panel type ED is used, the minimum water mass flow rate should not be less than 0.011 kg/s, to obtain the rated output.

2. Where two or more panels are joined together to form a “run”, the minimum mass flow rates listed in the table must be observed, to prevent air locking.

3. The circuit length for any run can be calculated from the number of tubes per panel, the lengths and panel types and the quantity of panels being used. The pressure loss per circuit can be obtained from the graph below , which includes a nominal allowance for bends and fittings.

4. The maximum recommended flow rate per circuit is 0.141kg/s (1.0m/s).

Circuit length ‘L’ metres

Minimum flow rate kg/s

L ≥ 22 0.011

22 > L ≥ 10 0.017

10 > L ≥ 2.5 0.038

L < 2.5 0.064

Notes:

Mass per metre (kg)

1 Tube 2 Tube 4 Tube 6 tube

Style Style Style Style

CG CS,FS,WS CG CS,FS,WS CG CS,FS,WS CG CS,FS,WS

2.6 5.8 5.1 8.4 10.2 13.5 15.4 18.6

Note: Masses exclude additional angle brackets used on wall mounted applications

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Application

Comfort conditionsIt is recommended that for radiant heating systems, comfort conditions are achieved when dry-bulb air temperature is slightly lower than mean radiant temperature. This difference between the two temperatures will result in the desired operative temperature.

The heat loss of the room under consideration may be calculated in accordance with CIBSE Guide A Environmental Design.

Evolution is intended for operation with LTHW. The maximum recommended flow temperature is 90°C.

SelectionThe following guidelines are to assist the designer in deciding the best layout for Evolution

1. The total heat load of the room must be calculated in accordance with recognised practice. Heat loads should be calculated using the internal design air temperature (dry bulb). However, the internal design air temperature can be reduced since mean radiant temperatures are elevated by radiant heating.

2. The total heat load should be divided by the total heat output per metre,. This will then give the require overall length of 1 tube, 2 tube, 4 tube or 6 tube radiant panels. Vertical panels will give greater heat output, which arises from greater convective heat transfer from the panel surface.

3. The run layout should then be decided, and is best set out on a layout plan. Radiant panels should be located around the outside perimeter of the room, particularly near windows. This will counteract disproportionately high heat losses.

4. There is no maximum mounting height for Evolution. However, when mounting heights exceed 4m, the heat load should be adjusted to additional losses of radiant heat incident on the walls.

5. There is no minimum mounting height for Evolution. As a rule of thumb, mounting heights should be not be lower than 2.4m. Contact Dunham-Bush for further advice on mounting heights and mean radiant temperatures.

6. Expansion panels must be used for longer panel runs, using the following guidelines :- 4 tube panels – one expansion joint every 6m 6 tube panels – one expansion joint every 3m

7. Ceiling Grid Applications Evolution Style CG is designed to fit into conventional ‘lay-in’ tile ceiling grids; panel dimensions have been optimised so that panel edges are concealed by standard ceiling grid T-bars - typically 15mm or 24mm.

8. Plaster Board Ceiling Applications Evolution Style CG can be installed flush into a plasterboard ceiling, with typical edge trims by others; builders work should include access for commissioning and maintenance.

9. Surface Applications For other types of ceiling, Style FS or Style CS panels may be more appropriate. Style WS panels are designed for vertical wall surface applications.

Evolution style FS installed into a pitched ceiling of community centre

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Solid Ceilings

Detail of Evolution Style CG installed flush mounted into plasterboard ceiling

Evolution Style CS installed into a pitched plasterboard ceiling

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Special Installations

Evolution Style WS installed onto special angle brackets (angle to suit project requirement)

Special angle bracket installation for Evolution Style WS

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Style CG, ceiling grid

Engineering Specification

The Evolution radiant heating panels shall be manufactured by Dunham- Bush Limited, Downley Road, Havant, Hampshire PO9 2JD. The style, panel types, lengths and quantities shall be as detailed in the schedule or as shown on the drawings.

StylesEvolution radiant panel style shall be suitable for the selected application.

Style CG ceiling grid

Style CS ceiling surface

Style FS freely suspended

Style WS wall surface

Panel typesEvolution radiant panel types shown in the panel types diagram, suitable for the hydraulic circuit specified and shall be selected from the following list:

Type EA standard panel

Type EB end panel

Type EC connection panel

Type ED single panel

Type EE expansion panel

Type EF multi-circuit panel – 22mm conn.

Type EG dummy panel (no tubes)

Type EH15 flow panel – 15mm conn.

Type EH22 flow panel – 22mm conn.

Type EJ15 return panel – 15mm conn.

Type EJ22 return panel – 22mm conn.

Panel nominal lengthsAll styles and types, except corners.Panel nominal lengths shall be asdetailed in the following list:

600, 900, 1000, 1200, 1500, 1800, 2000, 2100, 2400, 2500, 2700 and 3000mm.

CompositionEvolution radiant panels shall comprise one, two, four or six extruded aluminium alloy planks, which shall have a plane radiating surface on one side and semi-circular groove on the opposite side. A 15mm O.D. copper tube to EN1057, shall be retained in the groove by extruded tube clamps, which shall completely encapsulate the tube. The edges of the extrusion shall be tongued and grooved. Multi tube panels shall be assembled from extruded planks, interlocked side by side, securely joined by galvanised braces. Tube joints shall be soft soldered and panels shall be fitted with manual air vents, as appropriate to the panel circuitry. Where two or more panels are to be joined together, slip couplings shall be provided at tube joints.

Expansion panel type EE shall be supplied with expansion hoses, as appropriate to the number of tubes. Style CG Evolution panels shall be fitted with suspension brackets. Where two or more panels are to be joined together, connector plates and joint strips shall be supplied. 50mm thick mineral wool or equal, aluminium foil faced thermal insulation, shall be provided loose for site fitting.

Styles CS,FS and WS Evolution panels shall be supplied with top and bottom side rails for fixing together on site.

FinishAll panels and accessories shall be degreased before powder coating, colour RAL 9010, 30% gloss.

Site test and working pressureMaximum cold test pressure 10.5 bar gauge,

Maximum working pressure 7.0 bar gauge at 90°C,

Note: higher pressures can be accommodated using silver soldered joints. Consult Dunham-Bush for details.

Style CG, ceiling grid

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Construction

HandlingThe purchaser is responsible for offloading. Radiant panels can usually be lifted by two persons, but longer panels may require a third person providing support in the middle. Panels and accessories are usually palletised and shrink-wrapped, so fork lift truck or similar form of lifting equipment is required. Care should be taken to ensure panels are not dropped or suffer impact in any circumstances.

StorageRadiant panels should be stored under clean, dry indoor conditions. Any packaging should not be removed until panels are ready for installation, unless damage in transit is suspected. Note – the purchaser must examine the panels promptly upon receipt and any claims for damage will only be accepted if, at the time of delivery, the delivery note is endorsed with a note detailing the damage and countersigned by the transport company. Each panel may be marked with a stencil reference if specified on the order.

PreparationExtensive modification to the building fabric should not normally be necessary. However, proper provision for fixings must be arranged. The structure to which the panels are to be fixed must be fit for purpose and be capable accepting drop rods or similar suspension fixings. Allowance must be made for the panels to expand freely.

Style CG (ceiling grid) – panels should be suspended from M6 drop rods with washers and nuts. Other suspension methods may be used. Contact Dunham-Bush for guidance.

Styles CS (ceiling surface) and WS (wall surface) – bottom side rails and back side rails should be screwed or bolted to a sound, flat horizontal or vertical surface (fixings not supplied).

Style FS (free suspended) – panel is suspended directly from drop rods or similar (not supplied).

Note : It is important to coordinate the installation of panels with other trades, especially when Evolution radiant panels are to interface with other fittings such as ceilings and soffits.

Style CS, FS and WS panels are supplied in kit form and require assembly on site.

Pipework ConnectionsEvolution radiant panels are supplied with pipe circuitry prepared at factory – hence only flow, return and panel-joint connections are required. All panels will accept fittings for 15mm or 22m copper tube. It is recommended that connection pipework is given sufficient flexibility to allow for thermal expansion.

InstallationRadiant panels are supplied with assembly and installation Instructions, which provide full details on installing, connecting and commissioning radiant panels. Additional copies are available upon request. N.B. All panels are fitted with protective film on the radiating surface, which should not be removed until installation is complete and there is no risk of damage.

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Supply

PricesDunham-Bush do not issue price lists, but will be pleased to provide a written quotation upon request. All quotations are normally prepared by a member of our national network of sales agents and representatives. For further details, please contact Dunham-Bush head office in Havant, Hants.

Conditions of saleStandard conditions of sale are included on the reverse of all order acknowledgements. Further copies are available upon request.

AvailabilityEvolution radiant panels are supplied direct from the Dunham-Bush factory in Havant. All panels are made to order, and availability can vary with demand and should therefore be checked at the time of ordering. Contact a Dunham- Bush sales agent/representative for typical lead times.

PackagingEvolution radiant panels are packed for storage in dry, indoor conditions. If specified, each panel will be marked with its own unique stencil reference for on-site identification.

OrderingTo ensure the rapid processing of your order, please refer to the relevant quotation and appropriate correspondence. Please send yourorder directly to the Dunham-Bush sales agent/representative who provided the quotation.

Dunham-Bush will prepare a detailed layout drawing of the proposed installation for approval prior to manufature.

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Manufacturer reserves the right to change any product specification without notice

217-000-000-B

MAY 2017

Dunham-Bush Ltd Downley Road

Havant Hants

PO9 2JDTel. 023 9247 7700 Fax. 023 9245 3601

Email: info@dunham-bush.co.uk www.dunham-bush.co.uk