Adjusting Nominal Heat Load / Modulating Range - Schwank deltaSchwank Series Technical Manual

Adjusting nominal heat load /
Modulating range
Note!
Gas flow are factory set to natural gas
or propane. You may only commission
the system after adjustment.
Check connection pressure
 Open first the gas cock which is at the end of
the flexible gas hose [Fig.39].
 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
and check if the test nipple is gas-tight.
Adjusting nominal maximum load
[see Fig. 40]
 Switch heater in full load [MAX Speed PP06]
means by of
a) activating chimney sweep mode on central
control unit SchwankControl Touch or
b) selection PP06 on Schwank service software
IC 4000 or
c) selection PP06 directly with pushbuttons on
board IC 4000/1 [see page 44]
 Adjustment CO -value at gas throttling screw
2

after about ca. 10 minutes operation,
according to values Tab 5, page 24
by small slot screwdriver or hex wench 2mm

higher CO -value:
2
turn gas throttling screw

lower CO -value:
2
turn gas throttling screw
anti clockwise [+]
Adjusting OFFSET in lowest speed
[see Fig. 40]
 Switch heater in lowest speed


 Control CO
 Measure CO
 Check adjustment CO
 Close test nipple

clockwise [+]

Fig. 39: Gas cock
means by of
a) selection START speed PP04 or MIN speed
PP05 [whatever is lower] on central control unit
SchwankControl Touch or
b) selection START speed PP04 or MIN speed
PP05 directly with pushbuttons on board IC
4000/1 [see page 44] or
d) restart heater and use start speed
sequence of 1 minute
-value and p-OFFSET and if it
2
necessary adjustment with OFFSET-screw
according to values Tab. 5, page 24
by hex wench 2mm
-value and effective OFFSET-
2
pressure [differential pressure]
  
via and - .
[Recommendation to use differential pressure
gauge with max. 5 hPa measuring range]

higher CO -value and p-OFFSET:
2

turn OFFSET-screw

lower CO -value and p-OFFSET:
2

turn OFFSET-screw
2
maximal speed again. If it necessary repeat
procedure.

after the measurement
and check if the test nipple is gas-tight.
Reconnect the pressure air intake measuring
tube to the regulator.
deltaSchwank

,
clockwise [+]
anti-clockwise [-]
-values in minimal and
45