erensan°
“The Heating Engineer”
- 31 –
280111
Water level control
During boiler operation, water level should be kept at desired
value for as constantly as possible. For boilers of high capacity
and with constant changes in steam draught, automatic control
of water level should be provided. However, probability of
malfunction in device should be kept under consideration and
water level continuously be monitored by operators.
There must exist at least 2 level measuring tools in each boiler
to inspect water level, one being the level gage glass. If
differences are observed between gages, the reason should be
found out and corrected.
At least once every shift, level control device should be
discharged by opening its discharge valve and closed to see
that the control device is filled with water again.
Minimum and maximum water levels should be marked off on
the level gage glass. Level gage glass and surroundings should
be lighted well and steam leaks should not be allowed. Level
gage glasses should be kept clean. If water level is not seen in
level gage glasses, discharging should be performed to make
water level visible.
3
2
1
1
2
0
m
m
7
0
m
m
1 Normal water level
2 Lowest allowable water level
3 Highest point of heating level
Boiler water level
erensan
°
“The Heating Engineer”
- 32 –
280111
In boilers with automatic water level control, if water level
drops or rises excessively, the system should be taken out of
automatic control and water level should be put in manual
mode. After this, the system should not be connected to
automatic control before understanding and correcting the fault
reason.
Obtain opinion from producer/vendor firms in case level
electrode is being used.
Automatic boiler feed device installation
To Next Page