7
The 4 functions of the con-
troller unit:
1.
Fan controller (TR)
Controls the switching on and off
of the fan. The switching point is
set via the "setting lever TR".
2.
Temperature monitor for the
burner (TW 2)
The temperature monitor limits
the discharge temperature. The
switching point is set via the “set-
ting lever TW 2”.
Setpoint value approx. 75 – 80°C
3.
Temperature switch for the sec-
ond stage of the burner (TW 1)
The temperature switch controls
the stage of the burner. If the
set temperature is exceeded, the
burner is switched to the lower
stage (partial load operation).
The switching point is set via the
"setting lever TW1".
Setpoint approx. 10-15 K below
TW2
4.
Safety
thermal cut-out (STB)
Takes over the control function
of the temperature monitor.
Switching point fixed at 100°C.
A restart interlock prevents the
burner from restarting after trip-
ping. The reset button (RESET)
must be operated manually
from the outside with the hous-
ing cover closed.
Controller unit
The controller unit has a probe
self-monitoring function and is
cold-proof down to -20°C. The
unit switches off below -20°C,
but switches on again when the
temperature rises and is then fully
functional.
In the event of the probe or the
capillary tube being damaged, as
well as if a temperature of ap-
prox. 220°C is reached, the filling
medium will be emptied and the
controller unit will switch off for
safety. The controller unit is no
longer fully functional and must be
replaced.
To replace the controller unit, ob-
serve the following instructions,
among others:
■
The capillary tubes must not
be damaged or kinked during
installation
■
Bends may only be made on
the capillary tube and not on
the probe
■
For safe operation of the unit,
the probes must always be
exposed in the hot air flow
■
The probes must always be free
of dust and dirt
■
Capillary tubes and probes must
not show any damage
■
The probes must not be in
contact with the combustion
chamber or other metal parts
Controller unit per DIN EN 14597
Oil-fired or gas-fired warm air heaters must be equipped with intrinsically
safe control devices in accordance with DIN EN 14597.
REMKO controller unit
70
80
60
°C
TW1
50
STB
20
80
70 60
50
40
30
°C
TR
70
80
60
°C
TW2
50
NOTE
When replacing the controller
unit, only an original REMKO
spare part may be used!
CAUTION
In order to prevent a renewed
exceedance of the triggering
temperature the operating
conditions of the unit should
be checked before resetting
the STB.
CAUTION
Safety devices may not be by-
passed or disabled during unit
operation!
CAUTION
Careful and professional in-
stallation or assembly must be
ensured.
Safety device
