Combustion Checks; Burner Start-Up - Riello GAS 6/2 Installation, Use And Maintenance Instructions

COMBUSTION CHECKS

CO
2
It is advisable to not exceed 10% of CO
the risk that small changes of the adjustments due, for instance, at draught variation, may cause com-
bustion with insufficient air and consequently formation of CO.
CO
For safety reason the value of 0.1% (one thousand p.p.m.) must not be exceeded.
IONIZATION CURRENT
The minimum current necessary for the control box operation is 3 µA.
The burner normally supplies a higher current value, so that no check is needed.
However, if a measurement of the ionization current is required, it is necessary to disconnect the
probe lead and insert a d.c. microamperometer.
Lead
MOTOR LOCK-OUT
This is caused by the terminal protector relay, in case of overloading, or by the lacking of the
phase. To clear, pushdown the appropriate knob, after having removed the protective cover.

BURNER START-UP

Thermostat
Motor
Ignition transf.
st
1 valve
st
1 flame
nd
2 valve
nd
2 flame
Lock-out
2 s
D1799
If during operation the flame shuts off, lock-out occurs within 1 sec
5868
(gas with calorific value of 8600 kcal/m
2
+
S7511
Normal
40 s
-
Lock-out because no ignition
10 s 2 s
8
3
), in order to avoid
Probe
40 s 3 s max.