Heat Exchanger models

Transcription

1 Variante Sarto 3 Heat xchanger odels VR xial an or Models entrifugal an VR ownflow VR i-irectional

2 Variante Introduction The copact highly effi cient enson Variante heaters provide cost effective heating for ost coercial and industrial buildings, such as showroos, factories, workshops, warehouses, greenhouses etc. Using wall or roof ountings, the heaters are available for either roo sealed or conventional power fl ue applications. Options Top ounted spigots (VR) High/Low gas value 0-10v burner odulation ownfl ow heads Mixing box c/w dapers Wall brackets Stainless steel heat exchanger ir rotation therostat Model Range The Variante gas fi red units are available with heat outputs ranging fro 12kW- 144kW for use on natural gas (G20), or propane (G31) ir istribution VR heaters are fi tted with high effi ciency axial fans and discharge war air through an outlet grille coplete with adjustable horizontal louvres. VR heaters discharge war air in two opposing directions potentially enhancing distribution whilst reducing capital and installation costs for certain applications. VR heaters are downward discharging units that can provide both heating and de-stratifi cation. heaters are designed for ducted applications and are fi tted with a centrifugal fan(s) and have a duct spigot outlet. Louvres and downfl ow can be supplied as an option. This sybol verifi es that the product has been independently assessed and currently qualifi es for the schee, an up-front tax relief enabling businesses that invest in energysaving equipent to clai % fi rst-year capital allowances against their taxable profi ts. VR ownfl ow discharge unit VR Horizontal discharge unit VR i-directional unit

3 dditional ontrol at the Touch of a utton To copleent the high effi ciency Variante units a versatile range of Sarto control panels are available. Self adapting optiu start and stop Siple user friendly prograing Individual seven day prograing ay, night and frost (5 o ) teperature settings Three on/off periods per day Reote burner reset facility Sarto Multi-Zone Sarto Multi-Zone controls allow up to 16 units to be centrally controlled. unctions controlled by the aster unit include: locking updating Updating teperature functions and prograe settings Viewing the roo and set teperature settings of all units Setting holiday, overtie and vent only functions for the entire network entralised burner lock out reset Password protection to prevent unauthorised adjustent Hours run and service data logging attery back up in the event of ains failure H i g h L o w o r o d u l a t i n g b u r n e r c o n t r o l (Sarto Multi-Zone required) Multi-Zone Syste Zone 1 Master ontrol Up to 15 additional zone controls

4 Variante Specification abinet Low profi le in design and robotically punched and fored fro electro-zinc plated steel the heater cabinet presents a functional yet pleasing appearance. ccess to the burner and controls copartent is via a full width side hinged door. The unit is stove hardened epoxy powder coated with a durable Kestrel Grey paint fi nish. Heat xchanger ored fro aluinised steel tube into a copact, highly effi cient four pass S shaped assebly the Variante heat exchanger is capable of delivering effi ciencies in excess of 91% nett. fficiency ach heater within the range has been designed and developed with fuel effi ciency in ind and effi ciencies exceed the andatory requireents of legislation. ll heater effi ciencies are copliant with the needs of Part L2 of the 2010 uilding Regulations and have been rated to eet the current criteria necessary for inclusion into the nhanced apital llowance () schee. uel Heaters can be specifi ed to operate on either natural gas (G20) or LPG (Propane G31). Testing, pprovals and ertification Testing, pprovals & ertifi cation: enson Heating is accredited with ISO 9001 quality assurance certifi cation. ll gas fi red heaters have been type tested and approved to standards by an independent notifi ed body. ach heater is tested and fi red prior to despatch. Stainless steel heat exchanger tubes are available as an option. urner Variante heaters are fi tted with a quiet ulti-fl ae, in-shot burner coplete with autoatic electronic spark ignition and ionisation fl ae proving. On/off control is standard, optional high/low or odulation can be specifi ed for greater energy effi ciency and close environental control. lectric Motors ll electric otors coply with otor directive 5// Sealed obustion ircuit Variante heaters are factory fi tted with a power fl ue venter that enables the heater to be operated in either roo sealed or fan assisted fl ue ode. The fl ue fan is safety interlocked with the burner control syste via a pressure differential sensor. ir istribution The VR, VR and VR odels are fi tted with a dynaically balanced aerofoil type axial fan(s) which discharge warth directly into the space via adjustable horizontal louvres. Heaters for ducted applications, type, are supplied with a centrifugal fan and outlet duct connection spigot. coplete with centrifugal fan and duct spigot outlet for use with ductwork

5 Installation Installation Standards enson Variante gas fi red unit heaters ust be installed and coissioned by a copetent person and in accordance with the installation and coissioning instructions, relevant local and national standards, odes of Practice, and any requireents of Local uthorities, ire Offi cer or insurers. Siting enson Variante gas unit heaters can be positioned on fl at non-cobustible surface, located on or fi xed to cantilever brackets or suspended by eans of the M10 fi xings. It is recoended that for the cantilever bracket or suspended applications that the anufacturer s purpose designed brackets be used. are should always be taken to ensure that bracket fi xings or other ounting points are structurally adequate. Recoended iniu and axiu ounting heights, clearances for aintenance, air discharge, return and re-circulation should be observed. onsideration should be given to the route and axiu peritted length of the fl ue, the provision and connection of gas and electrical supplies and protection fro overhead cranes, fork lift trucks etc. Plant Roo/nclosure Siting Where it is proposed to install a Variante (centrifugal fan) heater within a plant roo or enclosure then return air and discharge air arrangeents ust be such that they do not interfere with the operation of the fl ue or burner. The war air discharge and return air should be positively ducted to and fro the heater. Gas Pipework The gas supply pipework should be sized and installed with due regard for all relevant standards and legislation, fl ow rates and the axiu/iniu inlet pressure requireents of the heater. Isolating gas cocks and service unions should be provided adjacent to each heater. It is recoended that the fi nal connection to all Variante gas unit heaters be ade with an approved and adequately sized fl exible gas connector. ir Supply Where heaters are installed directly within the heated space and (ie not in a plant roo or enclosure) then cobustion air or heater related ventilation air will generally not be required if the heater is installed in roo sealed ode (ie with the positive connection of both fl ue and cobustion air ductwork) or if the air change rate of the heated space is 0.5 air changes per hour or greater. If it is proposed to install a heater in fl ue only ode (ie without the positive connection of cobustion air ductwork) and the heated space has an air change rate of less than 0.5 air changes per hour then it will be necessary to provide either natural ventilation openings or echanical ventilation. Where heaters are installed within a plant roo or enclosure then provision for both cobustion air and air for general ventilation will be required by eans of high and low level ventilation openings. lternatively, the plant roos or enclosures ay be echanically ventilated. lue Variante heaters are approved for use in both roo sealed and fan assisted fl ue forat. The in-built fl ue fan perits the heater to be sited several etres away fro the point of fl ue exit. The units ay be fl ued either through the wall or roof. alanced fl ue odels ust be used with the wall or roof balanced fl ue outlet supplied by enson to coply with certifi cation. The axiu peritted lengths given in the data table ust be observed. The inclusion of 45 and 90 fl ue bends will reduce the total available length, a 45 bend is equivalent to 0.5 etres of straight fl ue and 90 bend is equivalent to 1.0 etres of straight fl ue. The fl ue route and exit point needs to be selected carefully and it is recoended that the installer consult the installation and coissioning instructions before coencing installation. On VR and odels the fl ue/cobustion air spigots are situated on the rear of the heater. Top fl ue/cobustion air spigots are available as an option on ost odels. Special Risk reas Where it is proposed to install a heater within a special risk area (including but not liited to areas containing fl aable vapours, where petrol engined vehicles are stored, parked or serviced, where paint spraying occurs or where wood working or other fl aable dust creating process are eployed) then restrictions, additional regulations and requireents concerning the heater installation ay apply. dditionally areas containing chlorinated or halogenated hydrocarbons, degreasing solvents, styrene s, other lainating aterials or airborne silicones can cause corrosion to heat exchangers and It is strongly recoended that you consult enson at the design stage. ailure to do so ay invalidate guarantee cover.

6 Variante THNIL T New Model Ref Old Model Ref Noinal heat output listed* irfl ow Teperature rise Static pressure () Throw VR VR (ownfl ow) VR (Total) Gas onsuption Natural gas G20 Propane G31 Gas connection lectrics Supply VR / VR / VR L VR / VR / VR Mounting height(s) VR / VR (ownfl ow) VR lue diaeter no obustion air diaeter no Maxiu horizontal run Maxiu vertical run Noise level (approx) VR / VR / VR Net weight VR VR / VR kw 3 /h K Pa 3 /h 3 /h Rc V/ph/hz V/ph/hz aps aps ø ø d() d() kg kg kg ¾ ¾ ¾ 415/3/ ¾ 415/3/ Throw fi gures provide the distance to the point where average air velocity is 0.25 /s. Throw fi gures for VR heaters are based upon the effective axiu ounting height. Throw fi gures for VR heaters are taken as the cobined bi-directional throw to the point where the average air velocity is 0.25 /s. uel consuption and output fi gures based upon gross calorifi c values as - Natural gas MJ/3 Lpg propane MJ/3 lue and cobustion air axiu runs for guidance purposes only. Please refer to installation instructions for detailed inforation. onsideration should be given to use of downturn nozzles for heaters stored at axiu height. Maxiu ounting heights ay exceed the fi gure recoended where de-stratifi cation fans are used (see enson recoupak range) Noise levels easured 3 fro appliance. *Please check TL at tie of ordering for latest listings as criteria are subject to change.

7 VR ront view Side view ack view Plan view I (Optional) J (Optional) G N H ront view Side view ack view Plan view VR G ront view Side view ack view Plan view VRINT VR / / VR IMNSIONS New Model Ref Old Model Ref VR/VR VR/ VR plenu box (optional) plenu box (optional) Top clearance (VR/) Top clearance (VR) Rear clearance (VR) Rear clearance () Rear clearance (VR) otto clearance (VR/) otto clearance (VR) Left-hand side clearance (ll) Right-hand side clearance (ll) G H I J

8 VR G Plan view ront view Side view ack view VRINT VR IMNSIONS New Model Ref Old Model Ref G lue and obustion air collars Ø Top clearance otto clearance Left-hand side clearance Right-hand side clearance G/N/007/1210 enson Heating, Ludlow Road Knighton, Powys, L7 1LP United Kingdo Telephone acsiile ail sales@bensonheating.co.uk Website enson Heating Ltd is a registered tradeark of birad Liited. ecause of continuous product innovation, enson Heating reserves the right to change product specification without due notice.