9
Regulating devices
The temperature sensor of
the controller is self-monitoring.
The probes are cold-
resistant down to -20 °C.
At temperatures below -20 °C
the controller current flow will be
interrupted - if the temperature
rises above -20 °C the current flow
will be released again.
In the event of the probe or
the capillary tube being damaged,
as well as if an overtemperature
of ca. 220 °C is reached, the filling
medium will be emptied and
the safety device is permanently
triggered.
Resetting is no longer possible.
The controller is no longer fully
functional and must be replaced.
Only use
“REMKO original
replacement parts”
when replacing
safety devices.
■
Ensure that the device is fitted
properly
■
The capillary tubes on
the triple-function combination
controller must not be kinked
or bent in the immediate
vicinity of the soldering points
■
The probes must only be fitted
at the fastening points provided
by the factory
■
The probes must always be free
of dust and dirt in order to be
sure of their correct functioning
❄
ATTENTION
It is essential to identify the
potential reasons why the STB
was triggered before releasing
the STB for recommissioning.
Safety equipment
The units have the following
control or safety equipment:
Temperature controller (TR)
The temperature controller
determines when the recirculating
fan is switched off.
Setpoint approx. 40 °
Temperature monitor (TW)
The temperature monitor limits
the unit or outlet temperature
in heating mode via the burner.
Setpoint approx. 80 - 85 °C.
Safety temperature limiter (STB)
The safety temperature limiter
(STB) interrupts the heating
function in case of extreme
overheating or a failure
or malfunction of the TW.
The red fault indicator light
“Overheating” on the control
cabinet illuminates.
The STB is unlocked by pressing
the “Overheating” reset key on
the control cabinet. This is only
possible once the unit has cooled
down.
The supply air fan is monitored
by an integrated, active
temperature management system.
Unit operation is interrupted
if the motor is overloaded or in
the event of a phase failure
Automatic circuit breakers provide
all of the electrical components
with additional protection.
These can only be disconnected
once the control cabinet is opened.
ATTENTION
Safety devices must not be
bypassed or disabled.
Triple-function combination controller
STB
1
2
3
4
5
6
20
80
80
90
70
70
60
50
40
30
°C
°C
TR
TW
Fig. without housing cover
The triple-function combination
controller is located inside
the control cabinet.
NOTE
The unit must be disconnected
from the mains power supply
before opening the control
cabinet.
NOTE
ATTENTION
After working on the safety
equipment, it is essential that
this be checked to ensure that
it is functioning correctly.
WLE-type automatic burners
The unit is permanently switched
off by the automatic burner
through the optical flame
monitoring in the event of
irregularities in the combustion,
the flame extinguishing, fuel
deficiencies etc.
Manual resetting is required.
NOTE
Only type-approved forced-air
oil burners in WLE design per
DIN EN 230 and DIN EN 267
should be used.
