BENSON VRBD 250 User Instructions
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BENSON VRBD 250 User Instructions

Variante 2 range bi directional tubular heater
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BENSON
2
VARIANTE
RANGE
Headin
BI DIRECTIONAL
NATURAL GAS (G20 I
)
2H
PROPANE GAS (G31 I
)
3P
TUBULAR HEATER
g
I N S T A L L A T I O N C O M M I S S I O N I N G
S E R V I C I N G
U S E R I N S T R U C T I O N S
Plac e your mes sage here. F or maximum i mpact, us e two or thr ee sentences.
Issue 3
October 2007
THIS MANUAL SHOULD BE LEFT WITH THE END USER .
TO ENSURE SERVICE AND MAINTENANCE INFORMATION IS AVAILABLE ON SITE

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Summary of Contents for BENSON VRBD 250

  • Page 1 BENSON VARIANTE RANGE Headin BI DIRECTIONAL NATURAL GAS (G20 I PROPANE GAS (G31 I TUBULAR HEATER I N S T A L L A T I O N C O M M I S S I O N I N G...

  • Page 2: Table Of Contents

    Section Contents Page No Compliance Notices Certificates of Conformity General product Information General Requirements Delivery & Pre-installation Checks Warranty Special risk areas Installation Installation Clearances and Mounting Heights Heater Mounting Warm Air Circulation Air Supply Flue Installation Electrical Installation Gas Installation Commissioning Electrical Pre tests Gas pre tests...
  • Page 3 Benson Heating cannot be held responsible from any matters arising from the revision to or introduction of new Laws, Standards, Directives, Codes of Practice or other...

  • Page 4: Compliance Notices

    1.0 Compliance notices Where proprietary items are incorporated into Benson Heating products, detailed The Benson Variante range of warm air information and instructions are also heaters detailed herewith are manufactured provided as part of the information pack. by Benson Heating within a strictly controlled...

  • Page 5: Certificates Of Conformity

    BS EN 50165 - 1997 Electrical Equipment of non-electric heating appliances for household and similar durable stove purposes, safety requirements The Benson Variante range of gas unit enamelled heaters meet with the governments criteria in respect of the Enhanced Capital Allowance Scheme polyester 1.1 Certificates of conformity...

  • Page 6: General Requirements

    Neither asbestos nor soft soldered joints are route of the flue used in the construction or manufacture of the Benson VRA range of Heaters. c) The position of the heater relative to the The materials selected for use can withstand...

  • Page 7: Delivery & Pre-Installation Checks

    The heater has not been operated or used contact should be made with the Sales Office within the normal scope of its intended at Benson Heating as soon as possible by application telephoning 01547-528534. In the case of claims for damage, this must be reported in...

  • Page 8: Special Risk Areas

    (e.g. by entrances, loading bays solvents styrenes other laminating materials etc) it is considered favourable if the heater or airborne silicones. Benson Technical is positioned so as the discharge towards or should be contacted before installation . across the cold air source from a distance Failure to do so may invalidate or reduce from 1.5m - 6m dependent upon the size of...

  • Page 9: Installation Clearances And Mounting Heights

    ventilation systems, and various types of A full and process plant. Applications should be suspended centrally over the area into which the warm air is to be unobstructed discharged . return air path to 2.1 Installation Mounting Heights and Clearances the air heater The Heater must be installed within the mounting heights indicated below...
  • Page 10 heated space, requirements Minimum Free Area Of 2.4.1 Heaters installed within the Ventilation Opening heated space MODEL High Level Low Level Where heaters are installed within the heated space (i.e. not a plant room , or enclosure ) then None Combustion air or heater related ventilation air will not be required if - None...
  • Page 11  the design air change rate of that heated The heated space needs to be space is less than 0.5 air changes per hour, mechanically ventilated so that the then provision for low level natural ventilation design air change is 0.5 air changes openings only will be necessary.
  • Page 12 and low level ventilation openings (sections 2.4.2.1 and 2.4.2.2 refer to plant room applications and sections 2.4.2.3 and 2.4.2.4 The low level natural ventilation opening refer to enclosure applications). should be situated on an external wall and be Minimum Free Area Of Minimum Free Area Of Ventilation Opening Ventilation Opening...
  • Page 13 250 mm. The table below provides specific data for The table below provides specific data for each heater model as - each heater model as - 2.4.2.3 Natural Ventilation Openings to 2.4.2.4 Natural Ventilation Openings to Mechanical Ventilation Enclosures for Flued Heaters MODEL Rate for Plant Room or Enclosure...
  • Page 14 1500 from another terminal vertically on the same wall 2000 from ground level The heaters must be connected to the flue system supplied by Benson Heating and be capable of withstanding the stresses and loadings associated with normal use. When designing the flue system the prevention of the formation and entrapment of condensation must be a key consideration.
  • Page 15 33-54-205 Option C Not Illustrated Contact Benson Technical Dept In this configuration the heater is connected to a horizontal flue system discharging the products of combustion and bringing in the combustion air from outside the building in which the heater is located.
  • Page 16 Option B In this configuration the heater is connected to a single flue pipe to discharge the products of combustion outside the building either through the roof or through a wall. The air for combustion is taken from inside the building. L1 maximum flue length 10 metres Part No Universal Terminal...

  • Page 17: Electrical Installation

    BS5440: parts 1 and 2 are used as a consultative document when considering flue with any metal requirements. If terminating through a wall only use Benson approved horizontal terminals surfaces liable 2.6 Electrical Installation to be subject to...
  • Page 18 Ensure that the Ensure that the mains isolator is turned OFF before undertaking any electrical work on the heater. Access to the electrical panel is electrical gained by opening the right hand heater side panel. supply is Warning Ensure that all connections are secure and compatible to that there are no loose strands which could bridge across the terminals.
  • Page 19 switch gear as heater any induced voltage may One electrical affect the panel per heater operation of the is required, sequential unless heaters control box are specified for within the multiple heater heater. control applications. On It is no account recommended should more that screened...

  • Page 20: Gas Installation

    Limit control (red button) SET at 100 exception to this An adjustable high temperature manual reset limit control. If this control needs resetting the cause should be determined and rectified is when a immediately. On models with two fans a second limit control panel control is situated inside the right side panel and is wired in series.
  • Page 21 The gas pressure drop supplier should on single and check that the multi heater meter and installations and service the effect they connection to may have on the heater are other plant capable of sharing the delivering the supply. required volume If it is necessary to fit a gas pressure booster, the controls must include a low pressure cut off switch which must be fitted...

  • Page 22: Commissioning

    than the diameter of the connection into the ensured that the multiblock. Note gas and Reference to The Institute of Gas Engineers publications Utilisation Procedures IGE/UP1 electrical and IGE/UP2 together with reference to BS6891 is strongly advised. supplies are 3.0 Commissioning Note turned off.
  • Page 23 Fault Finding Burner Electric Turn on Electric Check fuse Replace if fails to Supply ON Supply required light Replace flue fan Check flue fan Flue fan running connections Air pressure Check flue is Change air switch made clear pressure switch Thermostat Limit thermostat Reset Limit...
  • Page 24 Fault finding cont’d Fan will Check not run electrical wiring heater connection connection goes off on limit Fan control Reset fan settings control incorrect settings Fan runs in Faulty fan Change fan control control manual mode Faulty fan Change fan motor or motor or capacitor...

  • Page 25: Wiring Diagrams

    Wiring Diagrams VR 250-330 Auto Ignition...
  • Page 26 Wiring Diagram VRBD 410- Auto Ignition...
  • Page 27 Wiring Diagram VRBD 490- Auto Ignition...
  • Page 28 Wiring Connection CP2 On/Off 33-64-350T WARNING NEUTRAL RESET Wiring Connection CP2 Hi/Lo 33-64-488T WARNING NEUTRAL RESET...
  • Page 29 CP4 Controller Connections 33-64-351T WARNING NEUTRAL RESET Less Controls Connections 33-64-349T WARNING NEUTRAL RESET...

  • Page 30: Technical Data Common Information

    7.1 Technical Data Common Information Appliance Type PIN / report no 0063BQ5461 Electrical Supply 230V 50Hz 1ph Fuse Rating 6 AMP IP Rating IP20 Fan Limit Settings Fan On 50ºC Fan Off 30ºC Limit 100ºC Country Approved Gas Category AT,CH,CZ,DK,EE,ES,FI,GB,GR,HU,IE,IT IS,LT,LV,NO,PT,RO,SE,SI,SK,TR BE,CZ,NL,FR,DE,IE,IT,ES,CH,PT,GB,SE, SK,SL,PT,PL,TR...
  • Page 31 261.4 / ((100 / CO2) + 1) Model 490 Minimum pre-purge time 269.2 / ((100 / CO2) + 1) The pre-purge time must then be measured. If the measured pre-purge time is lower than the calculated time STOP and contact Benson Heating.
  • Page 32 661.7 / ((300 / CO2) + 2.01) Model 490 Minimum pre-purge time 681.6 / ((300 / CO2) + 2.01) The pre-purge time must then be measured. If the measured pre-purge time is lower than the calculated time STOP and contact Benson Heating.
  • Page 33 7.2 Technical Data NAT GAS / LPG MODEL HEAT 72.0 96.0 120.0 144.0 OUTPUT 246,000 328.000 409,000 491,000 HEAT INPUT 78.8 105.2 130.4 156.5 (Nett) 268,900 359,000 445,000 534,000 EFFICIENCY % Nett 91.4 91.2 91.5 91.5 EFFICIENCY % Gross 82.3 82.1 82.4 82.4...
  • Page 34 8.0 Parts list MODEL Fan Plenum Axial 33-64-585 33-64-586 33-64-587 33-64-588 Fan Axial VRA Standard 28-09-062 28-09-092 28-09-056 28-09-098 Fan Limit Stat 28-60-021 28-60-021 28-60-021 28-60-021 Gas Valve 28-30-181 28-30-181 28-30-184 28-30-184 Control Box 29-01-183 29-01-183 29-01-183 29-01-183 Injector Natural Gas 33-64-145 33-64-145 33-64-145...
  • Page 35 RABD...

  • Page 36: Dimensions

    Vertical Co/Axial Terminal Dimensions FLUE Heater 250- 490 1630 1860 Dimensions in mm’s...
  • Page 37 Horizontal Co/Axial Terminal Dimensions FLUE Ensure Terminal is located on the wall in this configuration BOTTOM Heater 250-490 Dimensions in mm’s...
  • Page 38 BENSON HEATING LUDLOW ROAD KNIGHTON POWYS LD7 1LP Telephone +44 (0) 1547 528534 Facsimile +44 (0) 1547 520399 email information@bensonheating.co.uk Web www.bensonheating.com...

This manual is also suitable for:

Vrbd 330Vrbd 490Vrbd 410Variante 2 series

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