BENSON OUHC Series Installation & Servicing Manual

BENSON OUHC Series Installation & Servicing Manual

Oil unit heater
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Technical Support:
Tel:
01384 489200
Email:
ambiradgroupsupport@tnb.com
I
NSTALLATION
B
ENSON
WARNINGS
Benson equipment must be installed and maintained in accordance with the current OFTEC
Regulations for oil fired products. Due account should also be taken of any obligations
arising from the Health and Safety at Works Act 1974 or relevant codes of practice. In
addition the installation must be carried out in accordance with the current IEE wiring
regulations (BS 7671), BS 6896: Industrial & Commercial) and any other relevant British
Standards and Codes of Practice by a qualified installer. All external wiring MUST comply
with the current IEE wiring regulations.
AmbiRad Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA
& S
ERVICING
OUH² O
IL
1
M
ANUAL FOR
U
H
NIT
EATER

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Summary of Contents for BENSON OUHC Series

  • Page 1 EATER WARNINGS Benson equipment must be installed and maintained in accordance with the current OFTEC Regulations for oil fired products. Due account should also be taken of any obligations arising from the Health and Safety at Works Act 1974 or relevant codes of practice. In addition the installation must be carried out in accordance with the current IEE wiring regulations (BS 7671), BS 6896: Industrial &...
  • Page 2: Table Of Contents

    Contents 1 Compliance Notices …………………………………..………..…..…………. Certificates of Conformity ………………………………..…………..…. General Product Information …………………………………….…………. General Requirements ……...……………………………………...………. Delivery & Pre inspection …………………………………………….…. Warranty ……………………..…….………………………………………. 2 Location & Positioning …………………….………………..…………..…………. Fuel Supply - General …………..…..……………...………………………. Fuel ……………...……………………………..……………...……………. Storage Tank ……………………..…………………….……………….. Single Pipe System (Gravity Fed) ….…………..………………...………. Two Pipe System …………………….…………...……………………...
  • Page 3 Operation and Maintenance manuals is done so for information and guidance purposes only 2.5 Air Distribution System and should only be considered valid at the time of the publication. Benson Heating cannot 2.6 Flue System be held responsible from any matters arising from the revision to or introduction of new 2.7 Flue Installation...
  • Page 4: Compliance Notices

    9001. continuous improvement, therefore reserves the right to amend or change the The Benson OUHA (C) has been tested and specification of the Unit Heater range assessed for compliance with the following subject to compliance with the appropriate European Directives.
  • Page 5: Certificates Of Conformity

    European, national, and local 1.2 General product information criteria. (See sections 3 and 9). The Benson OUH unit heater models have Prior to installation the following points an output range from 30kW to 100kW. Each should be considered;...
  • Page 6: Delivery & Pre Inspection

    (5) Installers name and address. The warranty commences from the date of Faulty parts must be returned to the Benson dispatch from the manufacturer, and is Spares Department, the address of which is subject to the terms detailed within the provided at the rear of this manual.
  • Page 7: Location/Positioning

    2.1 Fuel supply - general or flue system must be so placed or shielded so that its surface temperature does not The Benson range of oil fired heaters are all exceed 65°C manufactured and pre-set for use with 35 second gas oil delivered to the burner via a...
  • Page 8: Fuel

    All pipe work must be constructed and polyethylene oil tank OFTEC certified to installed so that it does not permit the OFS T-100 may be used. Local, national, ingress of air. European and fire regulations must also be complied with and must include: The construction, size, and position of the oil storage tank must take account of the A fuel level gauge (not made from glass) a...
  • Page 9: Single Pipe System (Gravity Fed)

    Caution 2.4 Single pipe system (gravity feed The Deareator must be fitted the burner side of the inlet fuel filter For installations where the oil tank is 200mm or more above the level of the fuel pump the Maximum lift should not exceed 3.5 metres, principle of gravity feed may be used.
  • Page 10 Typical Fuel Layout I.D. I.D. 10mm 35.0 100.0 Maximum 30.0 100.0 4 metres 25.0 100.0 20.0 90.0 15.0 70.0 30.0 20.0 BURNER The pump suction should not exceed a maximum of 4 met res. Beyond this limit gas is released from t he oil. The ret urn line should terminate within t he oil tank at the same level as t he suction line;...
  • Page 11: Electrical Supply

    Black iron pipes can be hammered to assist and the heater must conform to the in the removal of these contaminants. appropriate IEE regulations. Note heaters supplied fused The oil feed to each heater must be fitted pre-wired, all must be earthed. with a fire check valve and isolating valve.
  • Page 12 air vent of negligible resistance direct to the 2.9.1.1 Natural Ventilation Openings outside air. to the Heated Space. Such air vents must be positioned so as not If the heated space design air change rate is to become blocked or flooded, nor should less than 0.5 air changes per hour then they placed...
  • Page 13 • It is a requirement that the mechanical 15% of the wall height. ventilation shall be of the ‘input’ type with either natural or mechanical The low level natural ventilation opening extraction. should be situated on an external wall and be within 1000 mm of floor level for natural •...
  • Page 14: Warm Air Circulation

    Minimum Free Area of Mechanical ventilation opening MODEL Ventilation Rate for Model Plant Room or High Level Low Level Enclosure 1150 2.10 Warm Air Circulation 2.9.2.3 Mechanical Ventilation to a Plant Room or Enclosure. The air heater should be positioned to enable maximum circulation of discharged In the event that the installer prefers to warm air within the area to be heated, whilst...
  • Page 15: Flue System

    The condensate pipe from the flue to the 2.11 Flue system. disposal point must be made from corrosion Warning resistant pipe of not less than the internal essential that products diameter of the drain pipe. combustion are flued to the outside of the building.
  • Page 16: Installation

    3.0 Installation Installation Mounting Heights In either case the installer should ensure that the wall wall fixings or other support OUHA models medium is capable of supporting the weight The Heater must be installed within the c) On a level non-combustible surface mounting heights indicated below in metres.
  • Page 17: Oil Installation/Connection

    3.6 Electrical Installation/connection section individual wiring diagrams. Benson unit heaters are only available in 230V 50Hz 1PH. It is recommended that reference is made to the wiring diagrams contained within section 7 of this manual prior to installation or connection to the supply. The electrical...
  • Page 18: Commissioning

    4.0 Commissioning Note: (f) Check that fan is free to rotate and the It is a requirement that only suitably guards are in place. Ensure that flue secure, qualified and competent personnel are allowed to undertake the commissioning adequately supported, and that the various joints are properly sealed.
  • Page 19 * Adjust burner as per manufacturers (m) Adjust room thermostat to its highest instructions. setting, and allow the heater to continue to * Consult Benson Heating Technical fire. Department. (n) Gradually reduce the temperature setting Complete...
  • Page 20: Air Delivery System

    (contact, date, etc) should be left with the heater, a copy of which must also be forwarded to Benson Heating Service 4.3 Commissioning - air delivery Department. system...
  • Page 21: Servicing

    5.0 Servicing Warning 5.1 Planned Servicing Servicing must be carried out on a regular In order to maintain the efficient operation of basis, maximum interval between the heater it is recommended that the services being 1 year. following planned servicing and preventative maintenance programme is adopted by the In certain applications the frequency of user.
  • Page 22 If the condition of the heat exchanger gives cause for concern the Service Heat Exchanger Department at Benson Heating should be The heat exchanger requires a visual advised pending more...
  • Page 23: Service Re Commissioning

    The oil filter should be replaced with a new Air Delivery System one, and the system should be checked for A visual inspection should be undertaken to leaks. If the oil level is such to allow removal ensure that the air delivery system is in good of any sludge or other contaminants form order, that it remains adequately supported the tank this too should be undertaken,...
  • Page 24: Fault Diagnosis By Flow Chart

    6.0 Fault Diagnosis by Flow Chart...
  • Page 27: Wiring Diagrams

    7.0 Wiring Diagrams Internal Wiring Diagram 33-65-237 OUHA 30-40 ON/OFF Riello Oil Fired Burner...
  • Page 28 Internal Wiring Diagram 33-65-238 OUHA 60-100 ON/OFF Riello Oil Fired Burner...
  • Page 29 Internal Wiring Diagram 33-65-239 OUHC 60-100 ON/OFF Riello Oil Fired Burner...
  • Page 30 Internal Wiring Diagram 33-65-240 OUHA 30-40 HI/LOW Riello Oil Fired Burner...
  • Page 31 Internal Wiring Diagram 33-65-241 OUHA 60-100 HI/LOW Riello Oil Fired Burner...
  • Page 32 Internal Wiring Diagram 33-65-242 OUHC 60-100 HI/LOW Riello Oil Fired Burner...
  • Page 33 Remote Connections 33-65-131 ON/OFF (HI/LOW) to CP4 Remote Connections 33-65-228 ON/OFF (HI/LOW) Less Controls...
  • Page 34 Remote Connections 33-65-228 ON/OFF to SmartCom SC3-SZ Remote Connections 33-65-229 HI/LOW to SmartCom SC3-MZ...
  • Page 35: Technical Data

    8.0 Technical Data MODEL OUH30 OUH40 OUH60 OUH70 OUH90 OUH100 kW/hr 31.26 39.78 58.61 71.88 87.92 102.50 Heat Output Btu/hr 106,660 135.725 200,000 245,240 300,000 350,000 kW/hr 34.24 44.60 64.25 82.73 96.04 114.8 Heat Input (NETT) Btu/hr 116,830 152,175 219,220 282,250 327,690 391,640...
  • Page 36: Reference Documents Standards & Codes Of Practice

    8.1 Reference Information Doc/Ref Title/Subject BS 5410-1 & -2 Code of Practice for Oil firing BS EN 292-1 & -2 Safety of Machinery BS EN 60204-1 Safety of Machinery - Electrical BS EN 60335-1 Safety of Electrical Appliances BS EN 55014 Electromagnetic Compatibility BS EN 50165 Safety of Electrical Equipment...
  • Page 37: Parts Listing

    9.0 Parts Lists DESCRIPTION Fan & Limit Stat Assy 20-45-599 20-45-599 20-45-599 20-45-599 20-45-599 20-45-599 Fan/Limit Gasket 20-33-549 20-33-549 20-33-549 20-33-549 20-33-549 20-33-549 Burner Plate Gasket 31-28-080 31-28-080 31-28-080 30-40-156 30-40-156 30-40-156 Overheat Thermostat 28-60-039 28-60-039 28-60-039 28-60-039 Fire Valve 29-03-007 39-03-007 29-03-007 29-03-007...
  • Page 38 10.0 Dimensional drawings - OUHA...
  • Page 39: Dimensional Drawings

    Dimensional drawings - OUHC...
  • Page 40 (b) Fan will operate without the burner for Benson Heating advise that the planned the set period of the controller. service schedule as detailed in section 5.1 of the Installation, Commissioning and 11.7 Lockout situations...

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