Viessmann WB2-44 - Page 16

Initial Start-up and Service
16
Steps (continued)
8. Check CO
2
setting
Initial start-up Service
The Vitodens 200 boiler is factory
preset for operation with natural gas or
propane. It is recommended that a CO
2
check be performed at the boiler vent
pipe adaptor as part of the initial
start-up/maintenance procedure.
The MatriX burner of the Vitodens 200
is preset for the entire gas group. No
adjustment or readjustment of the
burner is required.
Depending on the gas type, the CO
2
value lies within the range of
H 6.6 to 10.0% for natural gas
H approx. 10.0% for LP
The CO
2
value measured must be
compared with the above CO
2
value
ranges of the individual gas type.
If the CO
2
value measured lies more
than 1% outside the stated range for
NG, or 0.5% outside the stated range
for LP, perform the following steps:
H Check that correct orifice was used
(see subsection entitled “Check
orifice size” on page 17 and section
“Technical Data” on page 46 of this
manual).
H Check the venting system for leaks
(see subsection entitled “Check
venting system for leaks” on page 18
of this manual).
1. Connect flue gas analyzer to boiler
vent pipe adaptor
(”Flue gas”
measurement opening).
2. Open the gas shutoff valve and start
up the boiler.
3. Trigger a call for heat by adjusting
the setpoint value.
4. Select lower end of rated input
range and check CO
2
content.
→ SYSTEM ”D”
→ INSTALLER
SETUP ”C”
→ CODE PLEASE ”B-C-C-B”
→ DIAGNOSIS ”A”
→ RELAY TEST ”A”
Select menu option
CONTINUE ”A” until code
10: MODULATION
10: <PL.90> CLOSED
10: BURNER
10: <PL.41> ON
10: is displayed
5. Select top end of rated input range
and check CO
2
content
If the value differs by more than one
percentage point, replace burner.
Select menu option
CONTINUE ”A”
until code
11: MODULATION
10: <PL.90> OPEN
10: BURNER
10: <PL.41> ON
10: is displayed
6. Exit the setting mode
H Close cover of programming unit.
H Enter the measured values into
Maintenance Record on page 70 in
this manual.
H Close flue gas measurement
opening
.
Do not use the emissions test switch
”S” to trigger a call for heat.
5285 961 v1.3
IMPORTANT
IMPORTANT