Suitable for large firetube
and watertube applications, the XL series is offered in two standard
configurations- vertical and horizontal. Vertical configurations support capacities
ranging from 37.8 to 63.0 MMBTU, and horizontal configurations support
capacities from 67.2 to 92.4 MMBTU. The standard, low-NOx and NT vertical and
horizontal configurations are capable of burning natural gas, propane gas, air
atomized No. 2 oil, as well as combination gas/No. 2 oil. Steam atomization is optional for both the
horizontal and vertical configurations of the ultra-low-NOx NT burners.
Gas manifold on oil burners comes
standard for easy upgrade to combination units. Easy access for maintenance is
granted through hinged rear doors and burner access panels. A backward-curved
impeller provides adequate combustion air for various furnace pressures.
Fan options include 1,800 rpm
combustion fans from 1,600 to 2,200 boiler HP or 3,600 rpm combustion fans from
900 to 1,500 boiler HP (motor HP based on NOx and capacity requirement).
Features:
- Various parallel positioning options are available and required
- Up to 10:1
turndown on natural gas and up to 8:1 turndown on oil (for standard and low-NOx
models only)
- Up to 6:1
turndown on oil (NT models only)
- Up to 6:1
turndown on natural gas for NTXL units
- Air-atomizing
units with steam atomization optional
- Parallel
positioning is standard for optimal control throughout the firing range