TECH
III.d) Protection against boiling water in the boiler
This protection prevents high temperature to appear in the
boiler (
only during using the function: boiler’s priority
). When the
set on the boiler tempertaure equals 55 degrees Celsius and the actual
temperature in the boiler equals 62 C, the feeder and the fan are turned
off. When the temperature increases to 80 C, CH pump is turned on.
When the temperature still continues to increase, when it reaches 85 C
alarm is turned on. Described situation may appear when boiler is
damaged or faulty, the sensor is installed in the wrong way, or the pump
has a fault. However, if the temperature decreases, when it drops to 60 C
the regulator will turn the feeder and the fan on and it will work until
reaching the set on the boiler temperature.
III.e) Temperature Safety Protections
The regulator is equipped in an additional protection in the case of
faulty bimetallic sensor: alarm is turned on and an adequate message is
projected on the screen after the tempertaure of 95 degrees is exceeded:
III.f) Fuel Feeder Protection
The worm in the fuel feeder is equipped in an additional sensor
measuring temperature. Alarm is turned on when the temperature
increasea significantly (above 65 C): the feeder is turned on for 10
minutes in order to move the fuel to the combustion chamber. The sensor
in the worm prevents the fuel from burning in the basket.
III.g) Fuse
The regulator is equipped in tubular fuse-element WT 6.3A, that
protects the system.
- 15 -
A LA R M
BasketSen Failure
A L A R M
TOO HIGH TEMP
Summary of Contents for ST-77
Page 1: ...ST 77 Manual Guide...
Page 20: ...Notes...