deltaSchwank
47
Version
002
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Tech
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Commissioning exhaust gas
collecting system [herringbone]
Before first start up
For first start up and commissioning of the system
please request a Schwank service engineer to
attend Adjustment by Schwank is a condition of
our warranty.
Gas fired radiant tube heater systems have to be
installed by a qualified engineer according to
local laws and rules in force.
Start up
First check the complete electrical supply and
connections of the system. All plugs at the
burner units must be taken off. Check the
correct connection of the plugs. After this the
room temperature regulation system is
switched on. Check the connection and the
direction of the rotation of the central exhaust
fan.
Check the complete connecting and
collecting tube system for a small slope
towards the central fan [no sinks for
condensate!].
Check the slope from central exhaust fan to
the chimney.
Check the complete flue gas system for
tightness with central exhaust fan on [burners
off]. In case of leaks ensure tightness by high
temperature silicon.
Correct start up and commissioning without
system tightness is not possible!
Now the negative pressure at test nipple
nozzle pressure is checked [burners off,
dampers at the end of the tubes completely
open]. The minimum negative pressure under
these conditions must be >1 hPa.
In case the negative pressure level is lower
please check again the tightness of the
complete system. Also check that the damper
in front of the central exhaust fan is open.
Commissioning
The safe evacuation of the exhaust gases of
all heaters is ensured by correct adjusting of
negative pressure. This is done by fixing the
dampers at the end of the heaters and may
be also the damper in front of the central
exhaust fan at the following values.
Required negative pressure level at test nipple
OFFSET [cold conditions]:
-
deltaSchwank 310U..1260U: -1.0 hPa
Adjustment with central fan on, burners off.
Start the adjustment with the heater furthest
away from the central exhaust fan. Take the
negative pressure at the measurement nipple
at the bottom of the burner unit. Therefore
take off the silicon tube between nipple and
solenoid valve. Negative pressure is adjusted
by moving the damper at the end of the tube
heater. After adjustment the silicon tube has
to be connected again between the nipple
and solenoid valve.
Adjustment of the other burner now follows
with the same procedure.
Having adjusted all the heaters the negative
pressure of the units may have changed. A
second thorough check and adjustment of
the negative pressure of the units is necessary.
Then the positions of the dampers must be
fixed by the screw.
Now the heaters can be started up [opposite
sequence to adjustment].
