Burnham K50 Boiler User Manual


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b. Draw about 5 gallons of hot water from
boiler into a container and dissolve into it the
appropriate amount of a recommended boilout
compound. Remove safety valve from boiler
and pour this solution into boiler, then reinstall
safety valve.
c. Turn on burner and keep operating while feeding
water to boiler slowly. This will raise water
level in boiler slowly into supply main and back
throughreturnmain,owingfromdrainhose
atabout180ºF.Continueuntilwaterrunsclear
fromdrainhoseforatleast30minutes.
d. Stop feeding water to boiler but continue
operatingburneruntilexcesswaterinboiler
owsoutthroughsupplymainandwaterlowers
(by steaming) until it reaches normal level in
boiler.
Turn off burner. Drain boiler. Open all radiator
valves. Reinstall all supply main air valves.
Open gate valve in Hartford Loop.
e. Whenboilerhascooleddownsufciently
(crown-sheet of sections are not too hot to
touch), close the drain valves at boiler and in
return main and feed water slowly up to normal
level in boiler. Turn on burner and allow boiler
tosteamfor10minutes,thenturnoffburner.
Draw off one quart of water from bottom gauge
glassttinganddiscard.Drawoffanotherquart
sample and if this sample is not clear, repeat the
cycle of draining the boiler and return main and
rellingtheboileruntilsampleisclear.
f. If the boiler water becomes dirty again at a later
date due to additional sediment loosened up in
the piping, close gate valve in Hartford Loop,
open drain valve in return main, turn on burner
andallowcondensatetoowtodrainuntilithas
runclearforatleast30minuteswhilefeeding
water to boiler so as to maintain normal water
level. Turn off burner, drain boiler, open gate
valve in Hartford Loop, then repeat step 1 above.
B. Water Boilers
1. Filling of Boiler and System – General – In a hot
water heating system, the boiler and entire system
(otherthantheexpansiontank)mustbefullofwater
for satisfactory operation. Water should be added to
the system until the boiler pressure gauge registers
normal system design operating pressure. To insure
that the system is full, water should come out of all
air vents when opened.
2. Boiling Out of Boiler and System. The oil and
grease which accumulate in a new hot water boiler
can be washed out in the following manner.
a.Removesafetyreliefvalveusingextremecareto
avoid damaging it.
b. Add an appropriate amount of recommended boil
out compound.
c. Reinstall safety relief valve.
d. Fill the entire system with water.
e.Startringtheboiler.
f. Circulate the water through the entire system.
g. Vent the system, including the radiation.
h. Allow boiler water to reach operating
temperature, if possible.
i. Continue to circulate the water for a few hours.
j.Stopringtheboiler.
k. Drain the system in a manner and to a location
that hot water can be discharged with safety.
l. Remove the plugs from all available returns and
wash the water side of the boiler as thoroughly as
possible, using a high-pressure water stream.
m.Rellthesystemwithfreshwater.
n. Add appropriate boiler water treatment
compoundsasrecommendedbyyourqualied
water treatment company.
3. Make pH or Alkalinity Test
After boiler and system have been cleaned and
relledaspreviouslydescribed,testthepHof
the water in the system. This can easily be done
by drawing a small sample of boiler water and
testing with Hydrion paper which is used in the
samemanneraslitmuspaper,exceptthatitgives
specicreadings.Acolorchartonthesideofthe
small hydrion dispenser gives the reading in pH.
Hydrionpaperisinexpensiveandobtainablefrom
any chemical supply house or through your local
druggist. The pH should be higher than 7 but lower
than 11. Add some washout chemicals (caustic
soda), if necessary, to bring the pH within the
speciedrange.Withthislowerlevelofprotection,
caremustbeexercisedtoeliminateallofthefree
oxygeninthesystem.
4. Boiler is now ready to be put into service.
Boiler Size
Water Content (Gallons)
Water Boiler Steam Boiler
5006B 37.6 25.6
5007B 43.4 29.3
5008B 49.1 33.0
5009B 54.9 36.8
5010B 60.6 40.5
5011B 66.4 44.2
5012B 72.1 47.9
5013B 77.9 51.6
5014B 83.7 55.4
5015B 89.4 59.1
5016B 95.2 62.8
5017B 100.9 66.5
5018B 106.7 70.2
5019B 112.5 73.9
5020B 118.2 77.7
5021B 124.0 81.4
5022B 129.7 85.1
5024B 141.2 92.5
5026B 152.8 100.0

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