Checking The Co 2 Content - Viessmann Vitocrossal 200 Series Service Instructions Manual

Commissioning, inspection, maintenance
Checking static pressure and supply pressure
2. Check the supply pressure (flow pressure); see the
following table.
Note
Set supply pressure (flow pressure):
Natural gas 18 to 50 mbar (1.8 to 5 kPa)
■
LPG 42.5 to 57.5 mbar (4.25 to 5.75 kPa)
■
Nominal supply pressure:
■ Natural gas 20 mbar (2 kPa)
■ LPG 50 mbar (5 kPa)
The nominal supply pressure can differ from these
values subject to country; see type plate.
The gas pressure switch on the gas train is set to
10 mbar (1 kPa). For operation with LPG, set the
gas pressure switch to 20 mbar (2 kPa).
Supply pressure (flow pressure)
Natural gas LPG
< 15 mbar < 20 mbar
< 1.5 kPa < 2 kPa
15 to 18 mbar 20 to 42.5 mbar
1.5 to 1.8 kPa 2 to 4.25 kPa
18 to 50 mbar 42.5 to 57.5 mbar
1.8 to 5 kPa 4.2 to 5.75 kPa
> 50 mbar > 57.5 mbar
> 5 kPa > 5.75 kPa
Checking the CO
Preparing the test
Status Service
R
S
Fig. 9
1. Open the gas shut-off valve.
2. Start the burner with emissions test mode enabled
("Test mode" in control unit menu).
Vitotronic operating instructions
16
3. Record the actual value in the report (on
page 56).
4. Close the gas shut-off valve.
5. Remove pressure gauge. Close test connector
Measure
Never adjust any settings. Notify your gas supply utility or
LPG supplier.
Please note: the boiler may only be operated temporarily
with this setting (emergency mode).
Notify your gas supply utility or LPG supplier.
Start the boiler.
Install a separate gas pressure governor with zero off up-
stream of the boiler system. Set pressure to 20 mbar/2 kPa
for natural gas, or 50 mbar/5 kPa for LPG.
content
2
3. Hold down buttons
ger than 2 s.
The display will then show the following:
■
■
Delivered condition, nominal CO
G20
Upper heating output: 9.0 % (-0.1/+0.3)
Lower heating output: CO
put minus 0.7 % (-0/+0.4)
The specified CO
ensured. If the CO
upper heating output is smaller than this, the CO
value must be adjusted.
(cont.)
and S simultaneously for lon-
Status: "P" (= controlled stop)
Service: Modulation level in % ("100" = 100 % =
upper heating output, "0" = 0 % = lower heating
output)
value of upper heating out-
2
difference of at least 0.3 % must be
2
difference between the lower and
2
.
A
value, gas type
2
2