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Oil Supply
MD series boilers can only be fired with liquid fuels having following specifications:
Kerosene
viscosity at 20 C: 1.2 cSt or viscosity at 100 F: 28 Second *
Light oil (EL)
viscosity at 20 C: 4- 6 max cSt or viscosity at 100 F: 35 Second
Gasoil (D)
viscosity at 20 C: 4- 6 max cSt or viscosity at 100 F: 35 Second
*Burners suitable for Kerosene have limited availability and range
Any failure due to lack of technical precautions, firing with fuels
not suitable for boilers, and operation without taking recommendations given further in
this manual into consideration, will always be the responsibility of the end-user.
A single pipe oil supply with oil at a slight positive pressure is generally required though
the burners own oil pumps can provide some lift of the oil depending on the volume flow
and the lift required. For dual fuel burners a two pipe oil supply system is generally
recommended unless the burner is fitted with an oil pump clutch. An oil filter and
isolating valve should be provided and the burner connected to the oil supply with a
flexible oil hose. The hose and filter are generally supplied with the burner.
Gas Supply
The local gas supply authority should always be contacted at the design state to ensure
an adequate supply is available. An existing service pipe must not be used without prior
consultation with the local gas supply authority and the supply must be made through a
suitable meter.
The matching of burner model, burner and gas train size must be carried out in
accordance with supplied inlet gas pressure and fuel type to be fired. When sizing the
burner and gas train, all pressure losses inside the boiler, burner and gas train, and in
piping from burner inlet to main gas meter must always be taken into consideration.
Burner
MD boiler must be fired only with a CE APPROVED BURNER which is according to
Gas Appliance Directive and tested according to EN 676. MHS Boilers will not be
held responsible for any damage or failure due to use of a non approved burner.
It is not recommended to increase the diameter of hole in the middle of front refractory to
make the mounting of burner easier. If there is a space left between the hole in front door
refractory and burner tube after mounting, this space must be packed with rock-wool or
ceramic-fibre based insulation material to improve heat insulation. Otherwise, further heat
loss may result in damage to the front door.
Should the diameter of burner head be greater than that of the hole in front door refractory,
the diameter of the hole must be increased so that the burner passes smoothly through
the hole. Front refractory must be protected against breaking during mounting and
dismounting of burner.
TECHNICAL INFORMATION
Содержание Alpha Jetstream MD
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Страница 20: ...ASSEMBLY INSTRUCTIONS...
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Страница 25: ...EXPLODED DRAWINGS MD JETSTREAM EXPLODED DRAWING BOILER GROUP...
Страница 26: ...EXPLODED DRAWINGS ALPHA JETSTREAM MD EXPLODED DRAWING INSULATION AND OUTER CASINGS...