MAINTENANCE
34
TECHNICAL DOCUMENTATION
REMOVAL OF GAS VALVE AND VENTURI
• Isolate the gas and electrical supplies to the boiler.
• Remove the four screws from the flange on the rear of the gas valve ( ).
• Remove the electrical connection on the gas valve ( ).
• Remove the four bolts, four nuts and eight washers from the sealed air inlet box / venturi ( ).
• Remove the six bolts from the venturi / fan ( ).
• Remove the gas valve / venturi assembly from the boiler.
• To separate the gas valve and venturi, remove the four screws on the assembly ( ).
• Replace in reverse order ensuring all seals / gaskets are in good condition (renew if necessary).
01
02
04
05
03
Содержание Ethos RS 350
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