SIT Group 190 Serie Instrucciones Para La Instalación Y El Uso página 10

mounting of millivoltage generator (thermopile), spark electrode and thermocouple or flame
sense electrode
See fig. 6.
1. Place thermopile (4) in the hexagon shaped bushing hole on the left handed side of the bracket
and fix (some 0.199.700 pilot assemblies have brackets with reversed components and may be
on right side) the nut with a 7/16" (11 mm) open end wrench. Recommended torque: 35 lbf in
(10 Nm).
2. Place spark electrode (8) in the hexagon shaped bushing hole on the center of the bracket and
fix the nut (9) with a 13/32" (10 mm) open end wrench. Recommended torque: 35 lbf in (10
Nm). It is recommended to position pilot burner in the application in such a way that the spark
electrode is above or in center plane of the burner head: spark gap must be between 0.08 in
and 0.2 in (2 mm and 5 mm).
3. Place thermocouple (13) in the hexagon shaped bushing hole on the right ( some bracket
configurations are reversed and may be located on left side) of the bracket and fix the nut
(10) with a 13/32" (10 mm) open end wrench. Recommended torque: 35 lbf in (10 Nm). It
is recommended to position thermocouple in the application in such a way that the tip (hot
junction) is from 0.16 in and 0.32 in (4 mm to 8 mm) in center plane of the burner head flame.
Electrical connections.
1. Switch off power supply before making electrical connections, if applicable.
2. Wiring must be within local regulations.
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3. Follow the instructions supplied by the appliance manufacturer.
1a
4
Fig. 
8
9
4
10
13
8