Manual

Table 1 - RATINGS NATURAL AND PROPANE GASES
Vent Diameter (Inches)
Model Heating ** Net AFUE
Znput Capacity AHRI Rating Water To Chimney Horizontal Vent
! *Mbh ! *Mbh ! *Mbh ! ! (Category Z) ! (Category HI)
XEB-2 42.5 36 31 84.4 4 3
XEB-3 75.0 63 55 83.4 4 3
XEB-4 112.5 94 82 83.0 4 3
XEB-5 150.0 125 109 82.7 4 3
XEB-6 187.5 155 135 82.3 4 4
XEB-7 225.0 186 162 82.0 4 4
* MBH= 1,000 Btuh = British Thermal Unit PerHour. Boilers are equippedfor altitudes up to 2,000 feet only. U.5.A.
Only - For altitudes above2,000 feet, ratings should be reduced at the rate of 4% for each 1,000feet above
sea leveL CanadaOnly - Boilers may be used at high altitude (2,000-4500 feet/640-1350m) by using a certified
field conversion kit, resulting in a 10% de-rate. ContactProvincial authority havingjurisdiction for installations
above 4500 ft (1350m)above sea level + Heating Capacity based on D.O.E. (Department of Energy) test
procedure.
**Net AHRI Water Ratings indicate amount of remaining heat input that can be used to heat the radiation
or terminal units. Net AHRI Ratings shown are based on an allowance of 1.15 Selection of
boiler size should be based upon "Net AHRI Rating" being equal to or greater than calculated
heat loss of building.
Manufacturer should be consulted before selecting a boiler for installations having unusual piping
and pickup requirements.
New York City MEA Number 484-84-E Voi. IV.
This boiler cannot be used with all types of chimneys. Read these instructions carefully before installing.
These Gas-Fired Hot Water Boilers are low pressure, sectional cast iron boilers Design Certified by C.S.A. (Canadian
Standards Association) for use with Natural and Propane Gases. Constructed and hydrostatically tested for maximum
working pressure of 50 psi in accordance with A.S.M.E. Boiler and Pressure Vessel Code Section IV Standards for cast iron
heating boilers.
Boilers must stand on noncombustible floor. If installed on combustible floor, please refer to Repair Parts manual for
appropriate Combustible Floor Base part number.
Boilers For Use At High Altitude
Boiler is factory equipped for use at altitudes of 0-2,000 feet above sea level. For use at altitudes above 2,000 feet above
sea level, input ratings are reduced by change in main burner orifice size. U.S.A. For altitudes above 2,000 feet above sea
level, input ratings should be reduced at rate of 4% for each 1,000 feet above sea level. Consult National Fuel Gas Code
(NFPA54/ANSI Z223.1), or manufacturer for correct orifice sizing information. High altitude orifices are available from
boiler manufacturer.