elco Thision EVO WH 250-120, Руководство по эксплуатации и установке

Страница: 20 / 30

+
+
+ -
-
+
-
+
Commissioning
20
GB
Combus on analysis
Combus on se ngs
Combus on check at full load
Start the boiler in controller stop
mode and go to 50% load. Now the
boiler operates at 50% load. Allow
the boiler to stabilise the combus on
for 3 minutes. Then increase the
boiler load step by step up to 100%.
Check the gas pressure on the inlet
of the gas valve while increasing the
boiler load:
the gas pressure should never go
below the minimum required value
-- see technical data.
When an (op onal) minimum gas
pressure switch is connected, this
must be set to 75% of the required
gas pressure.
Check the combus on se ngs
via the test point in the chimney
connec on (1).
If necessary, correct the se ngs with
the small adjustment screw at the
top of the mixer (3).
Combus on check at minimum load
Switch the boiler to minimum load
(0%).
Check the combus on se ngs the
same way as described for full load.
If necessary, correct the se ngs with
the large adjustment screw at the
top of the gas valve (2).
Combus on check at 50% load
An addi onal reference check of
combus on values at 50% load is
recommended in order to check if
the gas valve is set in such way, that
the modula ng behaviour is normal.
The CO
2
value should be in between
the se ngs of full load and minumum
load.
CO value should be equal to full load
and minimum load values.
Make sure that the boiler is set to
automa c opera on and controller
stop mode is disabled a er the
combus on test is
fi nished.
Combus on se ngs
Adjustments must be made by
quali
fi ed persons only.
If the appliance manufacturer
supplies checkout and/or service and
maintenance instruc ons carefully
follow them.
If such instruc ons are not provided
then use the procedure outlined
below.
Adjustment can only be made with a
special tool.
•
Remove cap screw with a screw
driver to expose o
ff set adjustment
screw.
•
Check gas supply pressure to the
appliance using a pressure gauge
connected to the inlet pressure
tap.
•
Start fan and check air fl ow.
•
Energize both electric operators in
order to have gas input to burner
and ignite boiler.
•
Operate boiler on high output.
•
Adjust CO
2
% with thro le
adjustment screw (3) to the
desired value. Turn screw driver
clockwise way to increase CO
2
%.
•
Operate boiler on low output
•
Adjust the CO
2
% at the desired
value at low output with o ff set
adjustment screw (2). Turn o ff set
adjustment screw clockwise to
increase CO
2
%.
•
Replace cap screw and ghten
pressure tap.
Combus on se ngs max. load
for natural gas G20
THISION L EVO
120
CO
2
, max % 8.4
-0.2
CO
2
, min % 8.5
-0.2
+0
+0
Combus on se ngs max. load
for natural gas G20
THISION L EVO
70
CO
2
, max %
8.4
-0.2
CO
2
, min %
9.0
-0.2
+0
+0
TH-L Evo70
TH-L Evo 120
TH-L Evo70 TH-L Evo 120
Combus on se ngs max. load
for LPG
G31
THISION L EVO
70-120
CO
2
, max % 9.6
+0.2
CO
2
, min % 9.6
+0.2
+0
+0
3
2
2
1