Burner Start-Up Cycle - Riello 40 Serie Instrucciones De Instalación, Montaje Y Funcionamiento

ELECTRODES ADJUSTMENTS
Attention:
Before assembling or remov-
ing the nozzle, loosen the
screw (A) and move the elec-
trodes ahead.
TYPE 716 T81 717 T81
A 4.5

BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
st
1 stage valve
nd
2 stage valve
Lock-out lamp
ECONOMIZER
This economizer showed in fig. on the right can be wired to a
nd
2 stage thermostat; in this case it performs two functions:
1. Delay of 5 - 6 seconds in the intervention of the 2
st
against 1 stage valve.
2. In relation of the position of the plug A, it determines the type of
required operation:
A
II - I I
II
II - I I
II
II - I I
II
2509
6.5
~ ~
12s 5s
Position I - II = Burner operation in 1
of the 2
Position II = Burner operation only in 2
Position I = Burner operation only in 1
4 ±
0.3 mm
D6120
A
Lock-out, due to light-failure
nd
stage valve
st
or 2
nd
stage thermostat.
11
GB
MOVE THE ELECTRODE
HOLDER BACKWARDS TO
THE END
A
±
0.5 mm
~ ~
12s 5s
nd
stage on request
nd
stage - compulsorily.
st
stage - compulsorily.
D5810
S7355