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Instructions for the installer, 2 nozzle replacement and primary air adjustment – Smeg NCT685BSG User Manual

Page 9

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Instructions for the installer

11

5.2

Nozzle replacement and primary air adjustment

Loosen screw A and push support B all the way. Use a double head

wrench to remove nozzle C and assemble the suitable one, following
the values indicated in the tables relevant to the type of gas to use. The
screwing torque of the nozzle should never exceed 3 Nm. Reposition
support B so that nozzle C is covered perfectly.
Move the Venturi tube D to regulate the air flow until distance “X” is
reached indicated in the table “Regulation of primary air” and then
secure the tube by means of screw A. After the regulations have been
carried out, restore the seals with sealing wax or equivalent material.

Burner

Rated

heating

capacity

LPG – G30/G31 2.8 kPa

Nozzle

diameter

1/100 mm

By-pass

1/100 mm

Reduced

flowrate

(W)

Flowrate

g/h G30

Flowrate

g/h G31

Auxiliary

1.05

48

30 (1)

380

76

75

Semi-rapid

1.65

62

30 (1)

380

120

118

Rapid

2.55

76

37 (2)

750

185

182

Rapid large

3.1

85

45

800

225

222

Fish pan

1.8

65

43 (3)

750

145

143

Ultra rapid

3.3

87

65

1700

240

236

Internal

0.8

42

26 (1)

380

58

57

Double
crown

External

3.3

87

55

1200

240

236

(1)= 33 for appliances without flame failure device.
(2)= 40 for appliances without flame failure device.
(3)= 45 for appliances without flame failure device.


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