REMKO GPM - Manual (Page 8)

8
REMKO GPM
The interruption of the current
supply during burning operation
is not permitted for the same
reasons, because lack of a
secondary ventilation of the
heat exchanger can lead to the
following problems:
■ Overheating of the unit with
the resulting expiration of the
warranty
■ Tripping of the safety
thermostat and the manual
reset associated with it
■ Damage to the fan of the
burner
If a new heat requirement should
take place during the follow-up
phase, the control PCB will wait
for the fans to switch off and then
proceed with a reset and begin a
new cycle.
Fans
The switching on of the fans is
time-controlled by the control
PCB, whereby the timing begins
with the switching-on of the main
burner.
The delayed switching prevents
cold air from being blown into the
room.
The pre-adjusted time delay may
range from 0 to 255 seconds
[Parameter C3].
If the value is set to zero, the
startup of the fans takes place at
the same time as the burner.
Switching off the unit
If there is not longer a heat
requirement (room temperature
above the adjusted target value),
the control PCB switches off the
burner. The burner fan runs for
the secondary ventilation of the
combustion chamber for a fixed,
pre-set time. This adjustment
cannot be changed.
The fan(s) likewise run afterwards
until the heat exchanger is cooled.
The time delay may range from 0
to 255 seconds [Parameter C4].
Safety thermostat(s)
For each fan on the units there
is a safety thermostat (STB)
with automatic deactivation and
positive security; a release of the
sensitive element triggers a safety
shutdown.
The thermostat is installed in the
area of the heat exchanger in
order to
monitor the temperature at its
output.
The triggering of the thermostats
causes the shutdown of the burner
by means of the flame monitoring
unit until the disabling of the
monitoring device.
The disabling of the device caused
by the triggering of the safety
thermostat is displayed by fault F2.
Display of the LED
A green and red LED are installed
on the front side of the unit.
The illumination of the green LED
means that the unit is connected
to the mains.
The illumination of the red LED
indicates a malfunction of the unit.
When operating the unit with
electronic temperature regulation
ATR-6, the LED is continuously
illuminated in the event of a
malfunction. The error code is
shown in the display.
Without electronic temperature
regulation, the cause of the fault
can be immediately identified by
the different types of flashing /
illumination of the red LED:
F1 - LED continuously lit
F2 - LED flashes twice quickly
F3 - LED flashes three times
quickly
F4 - LED flashes four times quickly
F8 - LED flashes continuously
F6 - red and green LED blink
alternately
BC D E F GH
Heat requirement
Fan-burner
EVP - ignition flame
EV1 - 1nd gas valve
EV2 - 2nd gas valve
EV2 - 2nd gas valve
Do not adjust parameter C4
to values below a minimum
running time of 90 seconds for
the cooling of the combustion
chamber.
ATTENTION
Gas burner unit
Ignition gas burner
Control unit
Gas nozzle
Ignition
electrode
Monitoring
electrode