Checking For Leaks; Recording Gas Characteristics - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

7.2

Checking for leaks

Prior to commissioning, check all new line sections on the
gas side for external gas tightness.
DANGER: Risk of explosion!
There is a risk of explosion if gas lines and gas
connections leak.
B Carry out an appropriate tightness test
with a foaming agent.
DANGER: Risk of system damage due to
short circuit.
B Cover the areas at risk before performing a
tightness test, e.g. the internal water
pressure sensor and the return sensor on
the boiler return.
B Never spray or let leak detection agent drip
onto cable entries, plugs or electrical
cables/leads.
B Check the new pipe section, including the seal at the
gas valve, for external leaks.
The test pressure on the gas valve inlet must be no
higher than 150 mbar.
If a leak is discovered during this test, all
connections must be checked using a
foaming agent. The agent must be approved
for gas tightness testing.
B Never allow the agent to come in contact
with electrical cables.
B Confirm in the commissioning report that the tightness
test has been carried out.
7.3

Recording gas characteristics

Ask your gas supply utility to advise you of the gas
parameters (Wobbe index and calorific value) and record
these in the commissioning report (
page 38).
Logano plus GB402 - Subject to technical modifications!
Chapter 7.18,
Commissioning the heating system
7
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