Rational LM1 Series Original Installation Manual page 71

Requirements for gas type and gas pressure
Check that the factory gas setting on the unit corresponds to the actual local
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gas supply conditions.
The gas type and the dynamic connection pressure set on the unit must cor-
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respond to those stated 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.
Adhere to all local gas company regulations.
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Requirements for gas inlet and gas line
The exhaust gas analysis may only be carried out by a technician who is au-
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thorised by the manufacturer. The exhaust gas analysis must be carried out
before commissioning.
Gas connections must only be set up by locally authorised gas technicians.
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The gas connection line must be set up in accordance with the rated thermal
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load specified on the type plate.
Use a suitable gas leak detector to check for leaks in the gas supply and gas
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distribution within the unit.
The cross-section of the gas line must be designed to the maximum con-
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nected output of all loads, at least ¾ inch.
A gas shut-off valve must be installed in front of every unit.
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All connection components installed on-site must be checked in accordance
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with DIN-DVGW (local gas supply company).
It is possible to connect the gas line with a gas socket.
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A connection with an internal thread is necessary to connect the gas line.
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The unit must be protected against slipping.
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If undiluted CO levels are above 174.7 mg/m³ [150 ppm] for convection
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mode and 465.8 mg/m³ [400 ppm] for steam mode, a company-trained
and certified technician must be called in to check burner settings in accord-
ance with setting instructions, and adjust these settings if needed. A flue gas
analysis must then be performed by the technician.
Follow the maintenance instructions for gas components.
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The gas installation must meet the CGA-B 149.1 natural gas regulation or
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the CGA-B 149.2 propane gas regulation.
80.06.070_iCombi Pro-iCombi Classic_IM_V01_en-GB
G20
20 mbar
[0,29 psi]
10 | Gas connection for gas units
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