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User Instruction
CAIROX
rev1
–
28/01/2022
OVERHEATING PROTECTION
Two overheat protection thermostats are installed in the electrical circular heater CVA. The first one with
automatic reset, turns off the heating when the temperature reaches 50 °C and turns on when the temperature
drops below 50 °C. The second with manual reset, turns
off
the heating when the temperature reaches 100 °C. In
this case need to figure the cause of the overheating of the heater. Eliminate overheating cause, press „RESET“
button on heaters cover.
Additional overheating thermostat (with automatic reset) is installed in the CVA heater with ESKM to protect
the ESKM controller. This thermostat turns
off
the heating when the temperature reaches 70 °C and turns on when
the temperature drops below 70 °C.
HEATERS CVA WITH INTEGRATED CONTROLLER
Table 1. Technical characteristics of controller EKR-K...
Power supply depending on model
single phase 230V / 2 - phase 400V / 3 - phase 400V
Power consumption in standby mode
0,1VA
Ambient temperature
0...50 °C
Relative humidity
Max. 90 % RH
(non-condensing)
DESCRIPTION OF OPERATING CVA MPI
…
Electrical duct heaters CVA MPI
…
are designed with integrated temperature control, one temperature sensor,
setpoint potentiometer knob is integrated on the heater lid.
When the heater power supply is switched on, LED 6 on the controller (EKR-
K…) PCB
(see Fig. 1 on page 4)
fl
ashes once every 8 seconds if setpoint is 0 °C and every second if setpoint is higher than 0 °C. If controller turns on
the heating depending on the demand, LED 5 lights
(see Fig. 1 on page 4).
Heaters CVA MPI
…
operates by the supply (TJ-K10K) air temperature sensor. Setpoint temperature
(0…30)
°C.
There can be set the
different
desired (setpoint) air temperature by potentiometer on the top of the heater
casing.
DESCRIPTION OF OPERATING CVA MPE …
Electrical duct heaters CVA MPE
…
are designed with integrated temperature control, one temperature
sensor, wired remote control panel (TR5K) for temperature setpoint.
When the heater power supply is switched on, LED 6 on the controller (EKR-
K…) PCB
(see Fig. 1 on page 4)
fl
ashes once every 8 seconds if setpoint is 0 °C and every second if setpoint is higher than 0 °C. If controller turns on
the heating depending on the demand, LED 5 lights
(see Fig. 1 on page 4).
Heaters CVA MPE
…
operates by the supply (TJ-K10K) air temperature sensor. Setpoint temperature
(0…30)
°C.
There can be set the
different
desired (setpoint) air temperature by wired remote control panel.
If LED 6 lights continuously it means that there is a failure of: supply (TJ-K10K) air temperature sensor or wired
remote control panel TR5K.
IMPORTANT:
If failure appears, power supply must be switched
off
and only then performed fault
elimination works.
IMPORTANT:
If failure appears, power supply must be switched
off
and only then performed fault
elimination works.
