Rational iCombi Pro, Original Installation Instructions

Page: 76 / 96

10 | Gas connection for gas devices
76 / 96 80.06.083_iCombiPro-iCombiClassic_IM_en-US
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For liquid gas, maintain the maximum connection flow pressure of 58
mbar [0.84 psi].
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Observe the maximum connection flow pressure of 65 mbar [0.94 psi].
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If the pressure is higher, turn off the gas supply to the device and do not
carry out any commissioning.
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Only USA and Canada: National Fuel Gas Code, ANSI Z223.1/NFPA 54
and the Natural Gas and Propane Installation Code, CSA B149.1
Requirements for gas type and gas pressure
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Check that the ex-works gas setting on the device matches the actual con-
ditions for the local gas connection.
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The gas type and the dynamic connection pressure set in the device must
match the specifications on the type plate.
G20
20 mbar
[0,29 psi]
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If the line pressure deviates from the connection flow pressure of the de-
vice, contact your gas supply company.
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Observe the regulations of the local gas supply company.
Requirements for gas supply and gas lines
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The flue gas analysis may only be carried out by a technician authorized by
the manufacturer. The flue gas analysis must be carried out before com-
missioning.
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The gas connection may only be carried out by a locally approved gas in-
staller.
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The gas connection line must be designed for the nominal heat load speci-
fied on the type plate.
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The gas supply and gas distribution in the device must be checked for
leaks using a suitable gas leak detector.
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The cross-section of the gas line must be designed for the maximum con-
nected power of all consumers, at least ¾ inch.