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1.43
Katherm HK
Ready-to-install trench heaters with EC tangential fan
Assembly and installation instructions
The limit of 4 °C is fixed for the unit frost protection function and
cannot be changed.
16.4 A14 Condensation alarm
The parametrised input for detecting condensation is continuously
monitored and “A14” appears in the display of the KaController if a
condensation alarm is emitted.
Cause:
condensation produced
Effect of this alarm:
The fan is switched on at stage 1 and the cooling valve is closed.
16.5 A15 General alarm
The parametrised input for the general alarm is continuously monitored
and “A15” appears in the display of the KaController if a general alarm is
emitted.
Effect of this alarm:
The fan is switched off and the heating/cooling valve is closed.
16.6 A16 Sensor AI1, AI2 or AI3 faulty
The sensor alarm is displayed if one of the active sensors does not transmit
any plausible measured values to the KaControl.
Cause:
The sensor AI1, AI2 or AI3 has to be parametrised as a sensor and record a
temperature of ≥ 90°C or one of the inputs has short-circuited.
Effect of this alarm:
The fan is switched off and the heating and cooling valve is closed.
16.7 A17 Unit frost protection function
The temperature is monitored at each phase in the system by every
parametrised or fitted sensor to the defined limit of 4 °C. The unit frost
protection function is activated if the room temperature drops below 4°C.
The unit frost protection function is disabled when the room temperature
rises above the limit of 4.5°C.
Cause:
The RGB sensor, AI1, AI2, AI3 sensor or the virtual sensor measures a
temperature of ≤ 4°C.
Effect of this alarm:
The fan is switched off and the heating and cooling valve is opened.
Содержание Katherm HK Series
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