Bosch NET 682 C - Manual (Page 11)

Instructions for the installer
26
5.2 Regulation for LPG
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
instructions indicated in the reference charts, with respect 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 chart in paragraph "5.4 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
(kW)
LPG – G30/G31 28/37 mbar
Nozzle
diameter
1/100 mm
By-pass
mm
1/100
Reduced
flowrate
(W)
Flowrate
g/h G30
Flowrate
g/h G31
Auxiliary (1) 1.05 48 30 33 (*) 380 76 75
Semi-rapid (2) 1.65 62 30 33 (*) 380 120 118
Average rapid (3) 2.55 76 37 40 (*) 750 185 182
Large rapid (4) 3.1 85 45 800 225 222
Triple crown (5) 3.9 95 65 1700 283 279
Triple crown (6) 3.3 87 65 1700 240 236
internal (7) 0.8 42 26 33 (*) 380 58 57 Double crown
external (7) 3.3 87 55 1200 240 236
(*) By-pass value for valveless appliances.