Setting Screws Venturi- And Gas Valves: Drawings - Slant/Fin VGH-299-CH Installation And Service Manual

High efficiency condensing gas boiler
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18.1.2 S
ETTING SCREWS VENTURI
Location of the setting screws:
High Fire: 
screw [2]
Picture 18. 1
High Fire: venturi adjustment screw: use hex key 4 mm (5/32 Allen wrench)
Low Fire: gas valve adjustment screw: Torx T40.
102
-
:
AND GAS VALVES
DRAWINGS
High Fire: screw [2]
Picture 18. 2
Low Fire: screw [1]
Picture 18. 3
E93.1601EN032.C VGH installation manual
Gas pressure 
nipple [3]
Low Fire: 
screw [1]
Gas pressure nipple [3]

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