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7217402.01 - en
INSTRUCTIONS FOR FITTERS
21. POSITIONING THE IGNITION AND FLAME-SENSING ELECTRODE
Figure 10
9912070100
To measure combustion performance and the toxicity of the products of combustion, a hole must be made in the exhaust
flue at a distance from the boiler equal to twice the internal diameter of the flue.
The following parameters can be measured through this hole:
• temperature of the products of combustion;
• concentration of oxygen (O
2
) or, alternatively, carbon dioxide (CO
2
);
• concentration of carbon monoxide (CO).
The temperature of the combustion air must be measured close to the point where the air enters the boiler.
The hole, which must be made by the person in charge of the system during commissioning, must be sealed so as to
ensure that the exhaust duct is airtight during normal operation.
22. CHECKING COMBUSTION PARAMETERS
This is a high static head pump fit for installation on any type of single or double-pipe heating systems. The automatic air
valve incorporated in the pump allows quick venting of the heating system.
23. PUMP CAPACITY/ HEAD
Graph 1
1411_1301.eps
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
0
200
400
600
800
1000
1200
1400
HEAD
₂
O]
FLOW [l/h]
[m
H
