ACE BOILER INC.
Page 12
Operation of Storage Water Heater
1 The entire system should be clean before starting operation to prevent plugging of tubes. Under
some conditions, the use of strainers in the pipe may be required.
2 When placing unit in operation, open a vent and start to circulate the cold medium only. Be sure
that the passages in the tank are entirely filled with cold fluid before closing the vents. The hot
medium should be introduced gradually until all passages are filled with liquid or steam. Then
close vents and slowly bring the unit up to temperature. (Relief valve or faucet may be used as a
vent.)
3
Start operation gradually. Do not admit hot fluid to the unit suddenly when empty or cold. Do not
stock unit with cold fluid when unit is hot.
4 Start the circulating pump (to run constantly).
Note: Do not run the circulating pump without
water in the system, as this may damage the pump.
5 Slowly turn on manual hot water or steam supply valve to coil and check for possible leaks in
piping, flanges and gaskets.
6 Make sure the gate valve on auxiliary air vent and steam trap is open (if provided on the
equipment).
7 Return line out of coil should start to warm up quickly, indicating boiler water or steam is heating
tank.
8 The automatic hot water or steam control valve may require adjustment to set to desired tank
temperature. If the tank does not get hot enough, the steam valve should be adjusted (screwed
in) to a higher number. If the tank temperature is too hot, screwing out to a lower number will be
necessary. See valve catalog for further instructions regarding maintenance and adjustments of
the control valve. Once the temperature regulator is set, it will maintain a constant tank
temperature by modulating the hot water or steam supply to any demand or temperature change
of the water stored in the tank, up to the capacity of the coil to produce hot water.
9 Ordinarily, once the temperature regulator is set properly, and the strainers and valves are clean
and operating properly, no further attention is needed for several months of operation.
10
Do not operate equipment under conditions in excess of those specified on nameplate.
11
In shutting down, flow of hot medium should be shut off first. If it is necessary to stop
circulation of cooling medium, the circulation of hot medium should also be stopped, by
bypassing or otherwise.
12
When shutting down the system, all fluids should be drained to minimize the possibility of
freezing and corrosion. To guard against water hammer, condensate should be drained from
steam heaters and similar apparatus when starting up or when shutting down. To minimize
water retention after draining the tube side of water cooled exchangers should be blown out
with air.
Summary of Contents for Packaged Storage Water Heater Steam-to-Water System
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