25
3
Product Description
NOTICE
At temperatures in the combustion chamber of over 500°C (932 °F), if the pilot burner is off, a
cooling air supply of 50% of the max. combustion air should be provided.
Air quality
Free of dust, oil, grease and aerosols
The quality for the compressed air supply should conform to
ISO 8573-1:2010 class ( 7 : 4 : 4 ). Non-observance can
result in short-circuits due to material deposits in the housing.
Air ratio
0.3...0.5 (the remaining air quantity must be provided by the
combustion chamber)
Flow rate (air quantity)
GFI48: max. 50 m
3
/h (65.39 yd
3
/h)
GFI70: max. 150 m
3
/h (196.19 yd
3
/h)
GFI89: max. 250 m
3
/h (326.98 yd
3
/h)
Connection: Air
Содержание GFI 48
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Страница 69: ...68 11 Order Information...