20 Instruction manual C786G, C787G & C789G Please keep this instruction manual for future reference
TABLE 2: Adapting to different types of gas
Burner
Type of
Gas
Pressure
Nozzle
diameter
Nominal Charge Reduced Charge
mbar 1/100mm g/h l/h kW kcal/h kW kcal/h
Auxiliary
Natural
G20
20 78 — 95.2 1.0 860 0.5 430
Natural
G25.3
25 78 — 110.7 1.0 774 0.5 430
G30 29 50 72 — 1.0 774 0.5 430
G31 37 50 72 — 1.0 774 0.5 430
Semi-rapid
Natural
G20
20 1.03 — 166.6 1.75 1505 0.7 602
Natural
G25.3
25 1.03 — 193.7 1.75 1505 0.7 602
G30 29 0.67 126 — 1.75 1505 0.7 602
G31 37 0.67 126 — 1.75 1505 0.7 602
Rapid
Natural
G20
20 1.26 — 257 2.7 2322 1.0 860
Natural
G25.3
25 1.15 — 299 2.7 2322 1.0 860
G30 29 0.8 195 — 2.7 2322 1.0 860
G31 37 0.8 195 — 2.7 2322 1.0 860
Triple-ring
(3.6kW)
(C786G)
Natural
G20
20 1.0*2/0.68 — 342.7 3.6 3096 1.9 1634
Natural
G25.3
25 — 398.5 3.6 3096 1.9 1634
G30 29
0.64*2/0.4
5
260
— 3.6 3096 1.9 1634
G31
37
0.64*2/0.4
5
260
— 3.6 3096 1.9 1634
Triple-ring
(4.2kW)
(C787G &
C789G)
Natural
G20
20
1.05*2/0.6
8
— 399 4.2 3612 1.9 1634
Natural
G25.3
25 — 443 4.0 3440 1.9 1634
G30 29
0.68*2/0.4
5
303 — 4.2 3612 1.9 1634
G31
37
0.68*2/0.4
5
303 — 4.2 3612 1.9 1634
ADAPTING TO DIFFERENT TYPES OF GAS