Rational iCombi Pro Original Installation Instructions page 81

The gas type and the dynamic connection pressure set in the unit must
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match the specifications on the type plate.
If the line pressure deviates from the connection flow pressure of the unit,
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contact your gas supply company.
Observe the regulations of the local gas supply company.
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Requirements for gas supply and gas lines
The flue gas analysis may only be carried out by a technician authorized by
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the manufacturer. The flue gas analysis must be carried out before commis-
sioning.
The gas connection may only be carried out by a locally approved gas in-
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staller.
The gas connection line must be designed for the nominal heat load speci-
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fied on the type plate.
The gas supply and gas distribution in the unit must be checked for leaks us-
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ing a suitable gas leak detector.
The cross-section of the gas line must be designed for the maximum con-
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nected power of all consumers, at least ¾ inch for a single unit, line size
must increase with increased number of units on same line.
A gas shut-off valve must be installed upstream of each unit.
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All on-site connection parts must be tested in accordance with DIN-DVGW
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(the local regulations).
The hose for the gas connection must not be longer than 2.0 m [78 3/4
inch].
The gas line can be connected to a gas socket.
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A connection with the appropriate counterpart to the ¾ inch internal thread
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(RP thread) is required to connect the gas line.
The unit must be secured against slipping (safety cable restraint)
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80.06.083_iCombiPro-iCombiClassic_IM_en-US
G20
20 mbar
[0,29 psi]
10 | Gas connection for gas units
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