Dimensions - Honeywell Hauck MEGASTAR MS-25 Instructions Manual

C. BURNER CAPACITIES (Continued)
Table 1 & 2 Notes:
1. Burner capacity is based on 60Hz power and scfh (nm
Correction factors must be applied for variations in altitude, temperature, or frequency; consult
Eclipse. An altitude correction table is available in Hauck Application Sheet GJ75.
2. Natural gas capacities based on higher heating value of 1,034 Btu per cubic foot (lower
heating value of 36.74 MJ/nm
air, and stoichiometric ratio of 9.74:1.
3. No. 2 fuel oil capacities based on higher heating value of 141,146 Btu per gallon (lower heating
value of 36.99 MJ/liter), 35% excess air, and stoichiometric ratio of 1371.1 cubic feet air/gallon
of No. 2 oil (9.7 nm
4. Liquid propane capacities based on higher heating value of 90,912 Btu per gallon (lower
heating value of 23.83 MJ/liter), 35% excess air, and stoichiometric ratio of 864 cubic feet
air/gallon of liquid propane (6.1 nm
5. The exhaust fan must be able to provide a slight negative pressure, suction in the range of
0.25 to 1" wc (.6 to 2.5 mbar), at the burner breech plate to exhaust the products of
combustion.
TM
6. MegaStar Burner airflow can be accurately monitored using the body pressure tap on either
side of the burner air plenum. An accurate device capable of reading up to 15" wc (75 mbar)
will be required for this measurement.
7. All burner fuel manifolds are supplied with fuel flow measuring devices. Liquid fuel manifolds
are equipped with an inline flow meter. Gaseous fuel manifolds are equipped with a gas orifice
meter that can be accurately checked for gas flow by measuring the differential pressure
across the orifice meter with a U-tube device (manometer) capable of reading in the range of
0 to 20"wc (0 to 50 mbar).
8. Low pressure atomizing air, used for firing low pressure fuel oil or LP, is provided by a 36 osi
(155 mbar) Hauck high efficiency Turbo Blower. The low pressure air is used to not only
atomize liquid fuels, but also improve mixing speed in the combustion zone.
9. High pressure compressed air, used for firing heavy oils or any fuel oil at high elevations, must
be supplied by the customer at a nominal 60 psig (4140 mbar) to the burner nozzle for
optimum fuel oil atomization.
D. DIMENSIONS
See appropriate section of MS-3 for detailed dimensional information.
3)
, 2-4 psig (138 – 276 mbar) manifold pressure, 25% excess
3
air/liter).
3 air/liter).
3
/hr) 60°F (0°C) air at sea level.
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