36
■
For operation with natural gas, no adjustment is
therefore required across the entire Wobbe index
range.
The boiler can be operated within the Wobbe index
range 9.5 to 15.2 kWh/m
3
(34.2 to 54.7 MJ/m
3
).
■
For operation with LPG, the burner must be conver-
ted (see "Gas type conversion" on page 36).
1.
Determine the gas type and Wobbe index by ask-
ing your local gas supply utility or LPG supplier.
2.
For operation with LPG, convert the burner (see
page 36).
3.
Record the gas type in the report on page 147.
Gas type conversion (only for operation with LPG)
1.
To convert the gas type at the control unit, see to
"Commissioning the system with the commission-
ing assistant" on page 33.
Note
Mechanical conversion on the gas train is not pos-
sible.
2.
Affix label "G31" (supplied with the technical docu-
mentation) adjacent to the type plate on the cover
panel.
Checking the static pressure and supply pressure
Danger
CO formation as a result of incorrect burner
adjustment can have serious health implications.
Always carry out a CO test before and after
work on gas appliances.
Operation with LPG
Purge the LPG tank twice on commissioning or
replacement. Vent the tank and gas connection line
thoroughly after purging.
A
Fig. 27
0
1.
Close the gas shut-off valve.
0
2.
Remove the cover panel; see page.
Commissioning, inspection, maintenance
Checking the gas type
(cont.)
5789 302 GB
Summary of Contents for B2TB
Page 6: ...6 15 Keyword index 152 Index Index cont 5789 302 GB ...
Page 117: ...117 Parts lists Hydraulics 5789 302 GB Components ...
Page 154: ...154 5789 302 GB ...
Page 155: ...155 5789 302 GB ...