h.Follow instructions TO TURN OFF GAS TO APPLIANCE. See Figure 48, 49, 50, or 51. Drain boiler and system piping.
i.Remove drain valve. Thoroughly wash boiler water passages with high pressure spray through drain valve tapping.
j.Fill boiler to normal waterline. If water in gauge glass is not clear, repeat procedure starting at step b.
k.Remove surface
4.Add Boiler Water Treatment.
a.Remove safety valve.
b.Pour recommended compound into boiler through safety valve opening.
c.Reinstall safety valve in Tapping "E" with spindle in vertical position. See Figures 1 and 2.
d.Follow Lighting or Operating Instructions to place boiler in operation. See Figure 48, 49, 50, or 51.
e.Boil water or heat water to 180°F.
f.Measure boiler water alkalinity. pH should be between 7 and 11. Add recommended water treatment chemicals, if necessary, to bring the pH within the specified range.
5.If unsteady water line, foaming or priming persist:
a.Follow Lighting or Operating Instructions to place boiler in operation. See Figure 48, 49, 50, or 51.
b.Install gate valve
c.Connect hoses from drain valves to floor drain.
Close gate valve in Hartford Loop. Open drain valve in return main.
d.Fill boiler to normal water line. Follow Lighting or Operating Instructions to place boiler in operation. See Figure 48, 49, 50, or 51.
e.Operate boiler for at least 30 minutes after condensate begins to run hot. Follow instructions TO TURN OFF GAS TO APPLIANCE. See Figure 48, 49, 50, or 51.
f.Close all radiator valves. Remove all supply main air valves. Plug openings in supply main.
g.Drain approximately 5 gallons of boiler water into container. Mix in recommended
h.Remove safety valve. Pour recommended compound into boiler through safety valve opening. Reinstall safety valve in Tapping "E" with spindle in vertical position. See Figures 1 and 2.
i.Follow Lighting or Operating Instructions to place boiler in operation. See Figure 48, 49, 50,
or 51. Slowly feed water to boiler. Water will rise slowly into supply main and back through return main. Adjust flow to maintain approximately 180°F water from return main hose. Continue until water runs clear from hose for at least 30 minutes.
j.Turn off water to boiler. Continue to operate until excess water is removed from boiler and system (by steaming) and boiler water reaches normal waterline.
k.Follow instructions TO TURN OFF GAS TO APPLIANCE. See Figure 48, 49, 50, or 51. Open all radiator valves. Reinstall all supply main air valves. Open gate valve in Hartford Loop.
l.Allow boiler to cool until crown sheet is no longer too hot to touch. Close drain valves at boiler and in return main. Fill boiler slowly to normal waterline.
m.Follow Lighting or Operating Instructions to place boiler in operation. See Figure 48, 49, 50, or 51. Allow boiler to steam for 10 minutes. Drain one quart of water from lower Gauge
Glass fitting.
n.Drain second quart sample from lower Gauge
Glass fitting. If sample is not clear, repeat cycle of draining boiler and return main and refilling boiler until sample is clear.
o.If after normal operation boiler water becomes dirty from additional system piping sediment returning to boiler.
i. Complete steps 5a through 5n. ii. Complete steps 3a through 3k.
6.Make pH or Alkalinity Test.
a.After boiler and system have been cleaned and refilled 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 it gives specific 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 recommended water treatment chemicals, if necessary, to bring the pH within the specified range. With this lower level of protection, care must be exercised to eliminate all of the free oxygen in the system.
b.Boiler is now ready to be put into service.
N.Clean Heating System (Water). A local qualified water treatment chemical specialist is a suggested source for recommendations regarding appropriate chemical compounds and concentrations which are compatible with local environmental regulations.
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