BENSON OUH 2 40 Installation And Operating Manual

Suspended oil unit heater

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NSTALLATION AND

INDEX

Introduction and Document Index

Installation Requirements

Installation Instructions

Commissioning Instructions

Servicing Instructions

Spare Parts

Fault Finding Guide

Replacing Parts

User and Operating Instructions

WARNINGS

Benson equipment must be installed and maintained in accordance with the current OFTEC

Regulations for oil ﬁ red 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 qualiﬁ ed installer. All external wiring MUST comply with the current IEE wiring regulations.

ENSON

USPENDED

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BENSON

OUH²

NIT

EATER

PERATING

ANUAL

Section

Part No. D301012

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Summary of Contents for BENSON OUH 2 40

Page 1 ..............WARNINGS Benson equipment must be installed and maintained in accordance with the current OFTEC Regulations for oil ﬁ red 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 Introduction. on these heaters due care and attention is required to ensure that working at height regulations are adhered to at the elcome to the Suspended Oil red Unit Heater Range. mounting heights speci ed. Local regulations may vary in the country of use and it is the installers responsibility to ensure that such regulations are All Dimensions shown are in mm unless satis ed...
Page 3 Document Index. 3.3 Commissioning - air delivery system. 3.4 Commissioning - hand over 1 Installation requirements. 1.1 Compliance notices. 4 Servicing instructions 1.2 Certi cates of conformity. 4.1 Planned servicing. 1.3 General product information. 4.2 Servicing procedure - Major component parts 1.4 General requirements.
Page 4: Installation Requirements
The manufacturer has a commitment to continuous 1. Installation Requirements. improvement and therefore reserve the right to amend or change the speci cation of the Suspended Oil red Unit Compliance notices Heater subject to compliance with the appropriate European, national and local regulations he Suspended Oil red Unit Heater range detailed herewith are manufactured within a strictly controlled Contained within the text of the manual, the words ‘Caution’...
Page 5: Warranty
General product information services, and if appropriate, any additional controls. • The position of the heater relative to the supply of The Suspended Oil red Unit Heater range have an output fresh air range from approximately 40.0 kW to 103kW. Each heater •...
Page 6: Location / Positioning
not in accordance with the manufacturers regulations (BS 7671), BS 6896: (Industrial & Commercial) and recommendations, codes of practice, or similar standards. any other relevant British Standards and Codes of Practice by a quali ed installer. Isolate all electrical supplies to the heater •...
Page 7: Fuel Supply - General
e ective when located as close to the working area as feed system, or whether the two pipe pumped system is more possible. However care should be exercised to avoid directing appropriate. the discharged air directly onto the occupants of the area to be heated.
Page 8: Two Pipe System
The return oil should preferably be discharged through an • An outlet valve situated at the opposite end of the elbow onto a tank plate situated within the tank, this should tank to the sludge valve. be positioned so as not to introduce air or air bubbles into the •...
Page 9: Electrical Supply
supply, the supply should only be used to serve the heater Caution itself and no other plant or equipment. The position of the The internal by-pass plug must be removed from the burner isolation switch must be such that it is adjacent to the heater pump when used in a pressurised ring main application.
Page 10 Burner oil pump details for heater models 30 - 180 oil lines L metres H(m) 8mm I.D 10mm I.D 35.0 100.0 30.0 100.0 25.0 100.0 20.0 90.0 15.0 70.0 30.0 20.0 Burner oil pump details 205 - 375 suction feed Pressurised oil feed system...
Page 11: Air Supply
1.11 Air supply The minimum free area of the low level natural ventilation opening shall be: Consideration must be given to the provision of air for the purposes of combustion and ventilation of the heated space, • 2cm2 for each kW of rated heat input plant room or enclosure where heaters are to be installed.
Page 12 openings (sections 1.11.2.1 refers to plant room applications The low level natural ventilation opening should be situated and sections 1.11.2.2 refers to enclosure applications). on an external wall and be within 1000 mm of oor level. Alternatively the plant room or enclosure may be The table in the next column provides speci c data for each mechanically ventilated (section 1.11.2.3 refers).
Page 13: Air Distribution System
1.12 Air distribution system non-combustible, resistant to internal and external corrosion, and be capable of withstanding the stresses and loadings associated with normal use. The air heater should be positioned to enable maximum circulation of discharged warm air within the area to be heated, whilst taking account of personnel within the area, When designing the ue system the prevention of the sources of cold air ingress, and obstructions.
Page 14 1.14 Dimensions...
Page 16 1.15 Technical Details Model kW/hr 39.78 58.61 71.88 87.92 102.50 Heat Output (max) Btu/hr 135,725 200,000 245,240 300,000 350,000 kW/hr 44.60 64.25 82.73 96.04 114.8 Heat Input (Nett) Btu/hr 152,175 219,220 282,250 327,690 391,640 Nett E ciency 89.23 91.22 89.10 91.55 89.3 Burner Type...
Page 17: Reference Information
1.15.1 Reference Information Doc/Ref Title/Subject BS 5410-1 & -2 Code of Practice for Oil ring 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 18: Installation
2. Installation. directly to the four M10 xings on the heater casing. Alternatively OUHA or OUHC units can be mounted on cantilever type wall brackets however consideration must t is strongly advised that the installer reads Section 1 of be given to ensure that the bracket is large enough to this manual prior to starting any installation work.
Page 19: Flue Installation
Flue Installation be run within conduit to a point adjacent to the heater, and be terminated to provide an isolation point that will prevent remote or inadvertent activation. An integral ue spigot is tted to all the Suspended Oil red Unit Heater thereby allowing the ue to connect directly to the heater.
Page 20 Wiring Diagram 33-65-245 Models OUHA/OUHC40 ON/OFF Riello Oil Fried Burner...
Page 21 Wiring Diagram 33-65-246 Models OUHA 60 - 70 ON/OFF Riello Oil Fried Burner...
Page 22 Wiring Diagram 73-65-010 Models OUHA 90 - 100 ON/OFF Riello Oil Fried Burner...
Page 23 Wiring Diagram 33-65-247 Models OUHC 60 - 100 ON/OFF Riello Oil Fried Burner...
Page 24 Wiring Diagram 33-65-248 Models OUHA/OUHC 40 HI/LOW Riello Oil Fried Burner...
Page 25 Wiring Diagram 33-65-249 Models OUHA 60 - 70 HI/LOW Riello Oil Fried Burner...
Page 26 Wiring Diagram 73-65-011 Models OUHA 90 - 100 HI/LOW Riello Oil Fried Burner...
Page 27 Wiring Diagram 33-65-250 Models OUHC 60 - 100 HI/LOW Riello Oil Fried Burner...
Page 28 Remote Connections 33-65-132 ON/OFF (HI/LOW) Less Controls Remote Connections 33-65-228 ON/OFF to SmartCom SC3-SZ...
Page 29 Remote Connections 33-65-229 HI/LOW to SmartCom SC3-MZ Remote Connections 33-65-131 ON/OFF (HI/LOW) to CP4...
Page 30 3. Commissioning. (k) Turn on main electrical supply. (l) Enable fan on via controller by selecting ‘Fan only’; ‘Vent only’; ‘Vent/Manual’.* Warning (* dependent on control type supplied. Refer to individual It is a requirement that only suitably quali ed and controller operating manual.) competent personnel are allowed to undertake the (m) Check to ensure burner is o but power remains to the...
Page 31 (section B) commissioning the data are found to be not in accordance with the manufacturers data, then the following action is (j) Repeat steps 3.2 c,e,f. recommended. * Re-check all readings and calculations. ----------- O R ---------- * Adjust burner as per manufacturers instructions. * Consult the Technical Department, details on rear page.
Page 32: Commissioning - Hand Over
(c) If the current drawn is too low the duct outlet grilles will require opening to reduce static pressure and increase air volume, if this is not the case overheat cut outs can be caused. Commissioning - hand over (a) Upon full and satisfactory completion of commissioning, a record of commissioning information (contact, date, etc) should be left with the heater, a copy of which must also be forwarded to the supplier (details on rear page)
Page 33: Servicing Procedure - Major Component Parts
4.0 Servicing. (c) Smoke test Annual Inspection (a) As per half year inspection, plus... ervicing must be carried out on a regular basis, the maximum interval between services being 1 year. (b) Heat exchanger and cleaning (c) Electrical connections Caution (d) Main fan motor In certain applications the frequency of servicing will have to (e) Oil supply including lter...
Page 34: Service Re-Commissioning
4.2.6 Burner pushing through the full length with a ue brush. (c) The ue brush should be withdrawn so as to pull any Service requirements for the burner tted to the unit heater deposits back into the bottom of the ue box where they can are covered in the separate manual prepared by the burner then be removed by using a vacuum cleaner.
Page 35 Turbulator positions in models 40 - 70. 8 o Turbulator positions in models 90 - 100. 12 o...
Page 36: Parts Lists
5 Parts Lists Heater Size / Item Description Burner 29-99-452 29-99-453 29-99-453 29-99-454 29-99-454 Burner Gasket 30-05-787 30-05-795 30-05-795 30-05-813 30-05-813 Nozzle 35s 27-00-415 27-00-426 27-00-436 27-00-032 27-00-036 Nozzle 28s 227-00-418 27-00-430 27-00-032 27-00-445 27-00-044 Control Box 30-01-156 30-01-156 30-01-156 30-01-156 30-01-156 Electrode Assy...
Page 37 Heater Size / Item Description MCB 16A OUHC 28-07-086 28-07-086 28-07-086 28-07-086 Contactor OUHC 28-11-137 28-11-137 28-11-137 28-11-137 Limit 73-65-005-S 73-65-005-S 73-65-005-S 73-65-005-S 73-65-005-S Thermostat Fan Control Relay 28-16-059 28-16-059 28-16-059 28-16-059 28-16-059 Fan/Limit Thermostat 20-45-589 20-45-589 20-45-589 20-45-589 20-45-589 Gasket Secondary Limit 28-16-058...
Page 38: Fault Finding Guide
6 Fault Finding Guide Check isolator No Power Check fuse Burner lockout Burner fails Fan/limit to run thermostat Room stat Timer No Demand Check controls Heat/vent switch On/ o switch Check that head Check oil Fuel Feed pressure is of gravity is incorrect su cient correct...
Page 39 Adjust air damper Air / fuel Adjust air mix ratio damper incorrect Check for air in fuel line Burner gives Check nozzle Too much air a sparky Check lter Fuel feed Check fuel lines restricted Check valves Check oil pressure Insu cient Check air combustion...
Page 40 Check burner Foreign matter fan motor in fan Worn / dry bearings Burner giving Suction lift Insecure burner excessive to great noise Water in fuel line Check burner Fuel feed oil pump restriction Adjust warm Warm air short air discharge / Check for high circuit cool air inlet...
Page 41: Replacement Parts
Replacement Parts. Note It is recommended that only suitably competent persons are allowed to undertake replacement of parts. Nozzle Burner. • Disconnect electrical supply. • Open the controls compartment door. • Disconnect electrical supply to the heater and shut o •...
Page 42: Axial Fan
7.10 Axial Fan Contactor The axial fan is removed form the rear of the heater (opposing • Disconnect electrical supply to the heater. side to the outlet). Ensure there is enough room to work in and • Open the controls compartment door. to withdraw the fan blower.
Page 43 Notes:...
Page 44: Ventilation Only
User Instructions 8.4 Stop procedure Commissioning and hand over Warning (a) Disable burner by selecting ‘Heat OFF’; ‘Standby’.* (* dependent on control type supplied. Refer to individual As part of the commissioning programme, the controller operating manual.) commissioning engineer must go through the following with the operator.

This manual is also suitable for:

Ouh 2 60 Ouh 2 70 Ouh 2 90 Ouh 2 100

BENSON OUH 2 40 Installation And Operating Manual

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