Combustion Checks - Riello GAS 7 P/M Installation, Use And Maintenance Instructions

COMBUSTION CHECKS

For the combustion adjustment we suggest to proceed in this way:
• Let the burner starts and after the flame ignites at the minimum output, disconnect the servomotor by opening
the connection 5)(page 1) placed on the panel.
• Thereafter proceed successively to the adjustment of the maximum, minimal outputs and to the intermediate
output.
MAXIMUM OUTPUT SETTING
Gas
• Disjoin the cam with adjustable profile 6) from the servomotor by re-setting the button 5).
• Turn manually clockwise the cam 6) till to reach the position of 130° (on the edge of the servomotor) in corris-
pondence of the pointer 4). In this way the gas throttle valve 12) is at the max. opening 90°.
• Join again the cam with adjustable profile 6) to the servomotor by pushing the button 5).
Now set the gas rate by acting on the gas setting valve.
Air
• Move the adjustable profile 7) of the cam by gradually acting on the screws 9).
MINIMAL OUTPUT SETTING
Gas
• Disjoin the cam with adjustable profile 6) by means of the button 5).
• Turn manually anticlockwise the cam till to reach the position of 30°.
• Lock it again and measure the gas rate.
If a different minimal output is desired, set free the cam with adjustable profile and turn it anticlockwise; for a
higher output turn it clockwise. When the minimal value is satisfying, set on the cam 3) the opening value signed
on the pointer 4).
Air
• Vary the profile of the cam 7) by gradually acting on the screws 9).
Be careful to not modify the part of profile controlling the air shutter at the maximum output, previously set.
INTERMEDIATE OUTPUTS SETTING
Gas
No setting is required.
Air
It is carry out by acting on the screws 9) of the cam profile, being careful to not move those for the minimum and
maximum outputs.
When the combustion setting is ended re-connect the electrical wiring of the servomotor by plugging the connector
5) (page 1); then lock the screws 9) by means of the cross-screws 8).
11 GB
2915245