Buderus Logano GA124 Installation And Maintenance Instructions Manual page 37

Placing the heating system in operation
Carrying out leak test
5. Open gas valve in the gas line.
6. Check the gas connection line to the gas fitting
( Fig. 36) for leaks with soap solution. If no leaks
are found, continue with step 8. If any leaks are
found, close gas valve.
7. Seal leaks and repeat step 6.
8. Close main gas shut-off. Remove the screw plug for
the gas pressure measuring port on the gas valve.
Install pressure measuring nipple and attach a
pressure gauge to measure the gas pressure.
9. Remove the screw plug for the orifice pressure
measuring port on the gas valve. Install pressure
measuring nipple and attach a pressure gauge to
measure the manifold pressure.
10. Open gas valve and measure the gas supply
pressure of the boiler. The supply pressure must be
between 4.7" and 10.5" W.C. for natural gas and
between 11" and 13" W.C. for propane gas. If the
supply pressure for natural gas is not between 4.7"
and 10.5" W.C. and not between 11" and 13" W.C.
for propane gas, contact the customer service
technician or the gas company.
11. Always follow the start-up instructions on the next
page.
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Logano GA124 special gas-fired boiler • Issue 04/2005
1
4
3
Fig. 36 Gas valve
1 ON/OFF button (at ON position)
2 Screw plug for gas supply measuring port
3 Screw plug for manifold measuring port
4 Pilot gas line connection
9
2
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