deltaSchwank
24
8 Operating
description
Start-up
If heat demand exists, the fan of gas-/ air ratio
unit will start up automatically.
After a pre-purge period of 20 seconds in start
speed [PP04] the automatic ignition starts
[max. ignition time 5 sec.]. The gas valve with
pressure regulator opens the gas supply to
venturi mixer. The burner flame is controlled by
an ionisation electrode. The ignition is switched
off, if the ionisation electrode reports a flame
to the burner control unit IC 4000/1 within the
safety time.
If the ignition process fails, the burner control
IC 4000/1 repeats the start-up for one more
time.
Operation
The heater continues to run after successful
ignition at the start speed for one minute,
regardless of the heat requirement.
Combustion takes place through the bluTek
burner within the special combustion chamber
design.
The hot flue gas heats the tube surface while
being fed through the tubes by the fan. The
hot radiant tubes emit long-waved infrared
radiation which is optimal directed into the
room by the reflector construction.
The heater is operated in a modulation ratio of
1:2 for optimum adaptation to the heat
demand.
The heater starts always at start speed for a
period of
1 minute and then according to the applied
heating signal.
The radiant tube heater deltaSchwank works
with a closed combustion system. The
combustion air is taken from outside [or from
the room]. The exhaust gas is evacuated
directly by a special air/exhaust pipe system
through roof, wall or indirectly into the room.
Fault
If no flame is reported during the pre-purge
period [including 1 repetition of ignition
process], the burner control unit IC 4000/1 will
switch off the radiant tube, error will give, fan
runs in post-purge time for 3 minutes in
maximum speed [PP06] and then heater will
lock it.
Investigation and repair must be carried out
by authorized personnel only. After clearance
of the fault, the lock can be rese
t.
The cause of the fault / error code is displayed
on the central control unit SchwankControl
Touch or can read out via corresponding
service software.
See chapter 12 for error codes.
Lock release can carry out by activate the
reset command via the central control unit
SchwankControl Touch or an interruption of
the electric power supply for 3 sec. A new
start-up begins. If no flame signal is reported to
the burner control unit IC 4000/1 during
operation, the gas valve shuts and stops the
gas supply immediately. A new start-up
process is repeated.
Error codes and troubleshooting on
pages 49 -50
