Burnham K50 Boiler User Manual


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13
a. With Steam Heating System, refer to Fig. 12, 13A,
13B.
NOTICE
      

      

       


       


        
   
       


       

b. With Forced Circulation HOT WATER HEATING
SYSTEMS, see Fig. 14A and 14B. For additional
reference, consult I=B=R Installation and Piping
Guide
No.250.
NOTE: When Hot Water Heating Boilers are
connected to Heating Coils located in Air Handling
Unitswheretheymaybeexposedtorefrigerated
air circulation, the Boiler Piping System must
be equipped with Flow Control Valves or other
automatic means to prevent gravity circulation of
the Boiler Water during the cooling cycle.
c. With COMBINATION HEATING AND COOLING
(REFRIGERATION) SYSTEMS having the same
Distributing Units, Piping and Circulator, See Fig.
15. For additional reference, consult ASHRAE
SystemsHandbook2008Edition.
d. NOTE: Valves must be installed in the supply and
return branches to the Heating Boiler and Water
Chiller so as to prevent circulation of Chilled Water
through the Boiler or Heated Water through the
Chiller.
OXYGEN CORROSION:
Oxygencontaminationoftheboilerwaterwillcause
corrosion of the iron and steel boiler components,
which can lead to failure. As such, any system must
bedesignedtopreventoxygenabsorptionintherst
place or prevent it from reaching the boiler. Problems
causedbyoxygencontaminationofboilerwaterarenot
covered by Burnham’s standard warranty.
Therearemanypossiblecausesofoxygen
contamination such as:
1.Additionofexcessivemake-upwaterasaresultof
system leaks.
2.Absorptionthroughopentanksandttings.
3.Oxygenpermeablematerialsinthedistribution
system.
Inordertoinurelongproductlife,oxygensources
should be eliminated. This can be accomplished by
taking the following measures:
FIG. 10
SEALING OF BASE, INSTALLATION OF
FLUE COVERS AND CANOPIES
F
IG. 11
ATTACHMENT OF FLUE COVERS
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