Summary of Contents for BENSON MH300
- Page 1 BENSON MH300 ( OIL FIRED MARQUEE 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 S E R V I C I N G...
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Page 3: Table Of Contents
Section Contents Page No Compliance Notices Certificates of Conformity General product Information General Requirements Delivery & Pre-installation Checks Warranty Location & Positioning Fuel supply-general Fuel Fuel Storage Single pipe system Two pipe system Pipe work & Fittings Oil installation and Connection Electrical Supply Air Supply 2.10... -
Page 4: Compliance Notices
ISO 9001.2000 amend or change the specification of the MH 300 Heater subject to compliance with the appropriate The Benson MH 300 has been tested and assessed European, national, and local regulations. for compliance with the following European Directives. -
Page 5: Certificates Of Conformity
1.2 General product information such a situation could also compromise the safe and efficient running of the appliance itself, and The Benson MH 300 model has an output of thereby constitute a hazard. 300kW. The installation of the appliance must meet all the The MH 300 units can suit either ducted relevant European, National, and Local criteria. -
Page 6: Warranty
Consumable items are specifically not included a) The warranty registration/commissioning card within the scope of the warranty. has not been completed and returned to Benson Heating Note (iii) Notification is required immediately a fault is b) The installation is not in accordance with the suspected. -
Page 7: Fuel Supply-General
2.1 Fuel supply - general A galvanised or open topped tank is strictly not allowed. The Benson MH 300 of oil fired heater are all manufactured and pre-set for use with 35 second If a medium density polyethylene oil tank is to be... -
Page 8: Two Pipe System
The fire check valve must be operated by way of a All Benson cabinet heaters must be earthed. fusible link positioned so that it is above the burner. Caution 2.7 Oil Installation/connection... -
Page 9: Air Supply
have resulted from incorrect wiring or the incorrect use of the heater. The building design air change rate is less than 0.5 air changes per hour and the volume of the space is 2.9 Air supply greater than 4.7m per kilowatt then low level ventilation is required Provision must be made for the existence of an air supply in order to satisfy both combustion and Where combustion air ventilation is required as... -
Page 10: Air Distribution
High Level (Outlet) the above then the extract rate shall be 2.06m per kW of rated heat input For heaters with a rated input of less than 60 kW — 4.5 cm per kW of heat input Mechanical ventilation systems where fitted must be provided with safety interlocks to prevent heater For heaters with a rated input of more than 60 kW operation in case of air flow failure... -
Page 11: Flue System
3.1 Electrical Installation/Connection It should be noted that if the static pressure is too high, nuisance shut-down will occur when the Benson MH 300 cabinet heaters are heater goes out on the overheat limit thermostat, if 415V 50Hz 3PH NEUTRAL & EARTH... -
Page 12: Heater Control Installation
from the heater and the ducting, to allow for and setting up the heater to operate efficiently free movement during expansion and and well within its designed operational limits, contraction. this does not mean that on site commissioning Where ducting passes through walls or is less important than might otherwise be the partitions sufficient clearance must be left, case. -
Page 13: Ignition
(f) Check for the following burner sequence Fan on Fan off Interval Operand Overheat limit - 100 <5s Combustion air damper actuated, Also check that the white button (automatic) is burner fan motor initiates purge pulled outward and that the red button (reset) cycle... -
Page 14: Air Delivery System
(o) Check fan and limit stat by depressing and instructions. holding in the fan motor overload re-set button, * Consult Benson Technical Department. located on the heater electrical panel. The time between the fan stopping and burner shut (q) Complete commissioning card and provide... -
Page 15: Hand Over
(contact, date, etc) should be left with the failure. heater, a copy of which must also be The following parts fall within this category: forwarded to Benson Heating Service thermostat, fan and motor. Department. Additionally, the fan and limit stat has been... -
Page 16: Servicing Procedure
maintenance programme is adopted by the If a condensate trap and drain facility is fitted user. this should be checked to ensure that it continues to function correctly, and the Quarterly Inspection drainage of condensates is not impaired. (a) Visual inspection of the burner (b)Clean and check spark Main Fan Motor electrode... - Page 17 (f) Fit the eccentric collar and engage the The maximum displacement at the mid point of cams. the top edge of the belt must not be greater (g) Tighten initially by rotating, and then by than 16mm per metre of span, when a force of tapping in the direction of the fan rotation.
- Page 18 If the condition of the heat exchanger gives cause for concern the Service Department at Benson Heating should be advised pending a more detailed examination. Electrical Supply All connections must be checked to ensure that they are secure, and free from corrosion.
- Page 19 No Power Check Isolator Check Fuses Burner Lockout Burner fails to Fan / Limit Thermostat Room Thermostat Check Timer Demand Controls Heat / Ventilate Switch On / Off Switch Fuel Feed Check that the Check that Head of Gravity is Incorrect Oil Pressure is Sufficient...
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Page 20: Fault Diagnosis By Flow Chart
6.0 Fault Finding Adjust Air Damper Air / Fuel Mix Ratio Incorrect Check for Air in Fuel Line Too Much Air Burner gives a Check Fuel sparky flame Pressure Check Nozzle Fuel Feed Check Filter Restricted Check Fuel Lines Check Valves Check Oil Pressure Check Air Damper... - Page 21 F o re ig n M a tte r in C h e c k B u rn e r F a n F a n M o to r W o rn / D ry B u r n e r B e a rin g S u c tio n L ift to g iv in g...
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Page 22: Wiring Diagrams
Wiring Diagram 20-49-146... -
Page 23: Technical Data
8.0 MH300 TECHNICAL DATA Heat Input full load Heat output full load Nett efficiency full load 85.4 Gross efficiency full load Fuel consumption full load L/hr 34.1 Oil pressure full load Running current full load Amps /ph Flue temp full load... -
Page 24: Reference Documents
MH300 TECHNICAL DATA Duct diameter Maximum duct length Burner type RL28 Burner control HI/Lo Nozzle specification 3.5/3.0 Oil connection size 1/4” Fuel specification 35 sec Head setting Air shutter Hi / Lo 70 / 28 Electrical supply V/Hz/Ph 415/50/3 Fuse Size... - Page 25 9.0 Reference Information Doc/Ref Title/Subject BS 5410 Part 1 ; 1977 and Part 2 ; 1978 Code of Practice for oil firing BS EN 292 Parts 1 and 2; 1992 Safety of Machinery BS EN 60204 Part 1; 1993 Safety of Machinery - Electrical BS EN 60335 Part 1;...
- Page 26 Benson Heating. Ludlow Road Knighton Powys LD7 1LP Telephone 44 (0)1547 528534 Facsimile 44 (0)1547 520399 Email information@bensonheating.co.uk www.bensonheating.com...
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