Adjusting Nominal Thermal Load At Single-Stage Operation; Adjusting Thermal Loads For Modulating Operation Lambdaplus - Schwank infraSchwank D Series Technical Manual

Adjusting nominal thermal load at
single-stage operation
Attention!
The pressure control unit is pre-adjusted
on natural gas / propane. Do not put the
appliance into operation uncontrolled.
Adjusting the nozzle pressure
1. Open first the gas cock which is at the end of
the flexible gas hose [Fig. 44].
2. Open the test nipple connection pressure.
Connect the pressure measuring instrument to
the test nipple and determine the connection
pressure.
Close the test nipple after the measurement!
3. Open the test nipple nozzle pressure.
Connect the pressure measuring instrument to
the test nipple and determine the nozzle
pressure.
4. Turn the adjusting screw on the pressure
regulator slowly in the "+" or "-" -direction while
continuously watching the pressure measuring
instrument. Stop turning as soon as the required
nozzle pressure is reached. The required test
nipple nozzle pressure for natural gas H
[W =14.85 kWh/m ] and natural gas L
3
o
[W =12.15 kWh/m ] is shown in Table 5. For
3
o
natural gas with other Wo-Index [information
from local gas company] you have to
determine the required nozzle pressure based
on the diagram on page 50.
5. Remove the protection cap A [Fig. 45]
6. Put the radiant tube into operation
7. Turn the adjusting screw B [Fig. 45] on the
pressure regulator slowly in the "+" or "-" -
direction while continuously watching the
pressure measuring instrument. Stop turning as
soon as the required nozzle pressure is reached.
8. Put the protection cap A on the valve after the
adjusting.
9. Close the test nipple after the measurement and
check if the test nipple is gas-tight.
Checking adjustment
1. Turn the adjustment screw slightly to "-"
-direction. Nozzle pressure must drop
immediately. If this does not happen, you must
readjust the jet pressure until the point is
reached at which a decrease or increase in the
nozzle pressure is noticeable on the measuring
instrument.
2. Close test nipple after the measurement!
3. Remove the measuring instrument and check if
the test nipple is gas-tight.
infraSchwank D / calorSchwank D shape U
Adjusting thermal loads
for modulating operation
lambdaPlus
It is necessary in addition to the mechanical
factory setting of the modulating gas pressure to
adjust the modulating regulator output current
range and the corresponding fan voltage to
match the existing gas quality and electrical
power supply.
Proceed as follows
[Example: 30U; nozzle pressure: 12 / 8,5mbar;
minimum fan voltage: 180 VAC value True RMS]
1. Open lid IC 4000/1.
2. Make sure that gas cock is closed.
3. Put the radiant tube into operation by
activating chimney sweep command on
SchwankControl Touch.
4. Select the parameter level. Press SW2 and SW3
buttons together for 3 seconds
[Fig. 42] until PP01 is shown on the
7-segment display.
5. Press button SW2 [+] to reach PP03.
6. Select the setting level for parameter.
Press SW2 and SW3 buttons together for 3
seconds [fig. 10, p. 15] until PP03 starts flash on
the display.
Now press buttons SW3 [-] oder SW2 [+] until
the observed voltage reaches the required
minimum value for phase angle control drive
[180V].
7. To store the new parameter setting, press SW2
and SW3 buttons together for 3 seconds and
leave the setting level.
8. Open the gas cock which is at the end of the
flexible gas hose.
9. Open the test nipple connection pressure.
Connect the pressure measuring instrument to
the test nipple and determine the connection
pressure.
10. Close test nipple after the measurement and
and check that the test nipple is gas-tight.
11. Open the test nipple nozzle pressure.
Connect the pressure measuring instrument to
the test nipple and determine the nozzle
pressure.
12. Put the protection cap A on the valve after the
adjusting.
13. Switch on again the heater by a short dis- and
reconnecting of the power plug [min. 3 sec.].
14. Similar to points 4 – 6 select the setting level for
parameter PP08.
45