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Airtight gas convectors<br />

SYSTEMA S.p.A.<br />

3.14 Utilization of the weekly programmer (optional)<br />

1) Push the programmer disk sectors corresponding to the<br />

period of operation desired towards the center (for example,<br />

from 08.00 AM Monday morning until 20.00 PM Tuesday).<br />

The red sector that appears at the edge of the disk indicates<br />

the period of device starting.<br />

2) Set the right time by rotating the white reference triangle at<br />

the center of the programmer disk clockwise.<br />

3) When setting starting at 08.00 AM Monday and switch-off<br />

at 20.00 PM Tuesday, the device will always start and stop<br />

at the same time and day, week after week.<br />

Draw 30<br />

3.15 Malfunctions and solutions for pilot flame devices (Mod. K21,<br />

K28, K40, K55, K28V, K40V, K55V)<br />

'()(&76 &$86(6 62/87,216<br />

1. The burner pilot flame fails to<br />

light.<br />

a) There is no gas or the pressure is a) Check the supply pressure on the<br />

too high.<br />

valve (5).<br />

b) There is no electrical spark b) Check the spark plug, cable and<br />

discharge on the burner.<br />

piezoelectric element.<br />

c) The pilot flame nozzle is clogged<br />

or inadequate to the type of gas<br />

being used (Methane or LPG).<br />

c) Replace using original spare<br />

parts.<br />

2. The burner pilot flame lights but<br />

goes off when the dial is released.<br />

3. The main burner flame goes off.<br />

a) The dial (1) has been released<br />

before ten seconds have passed.<br />

b) The thermocouple has oxidized.<br />

c) The solenoid valve coil is<br />

malfunctioning.<br />

a) The gas pressure reaching the<br />

nozzle is too high.<br />

b) The wrong type of nozzle has<br />

been used.<br />

c) The flue gas expulsion pipe has<br />

not been perfectly connected<br />

between the cast-iron casting and<br />

the external anti-wind grille.<br />

d) The anti-wind grille has been<br />

clogged.<br />

a) Keep the dial pressed down for<br />

more than ten seconds.<br />

b) Replace using original spare<br />

parts.<br />

c) Replace using original spare<br />

parts.<br />

a) Adjust the pressure to the rating<br />

plate values using the pressure tap<br />

(4).<br />

b) Replace using the right type of<br />

nozzle for the type of gas being<br />

used.<br />

c) Check the connection seal.<br />

d) Clean the grille.<br />

35<br />

Rev. 05IT0112-1

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