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Operation
RT-SVX20A-E454
Unit start-up
Verification of gas valve settings -
(Reserved for the qualified gas
technician)
WARNING! Improper gas valve
setting may lead to burner
destruction and people injury.
Note: Unit factory-set for G20.
Figure 32 - Gas valve
1 = Screw to set gas valve
1
3/32"
G
20 - 7.
5
mb
a
r
G20 - 7.5mbar
G
2
5
-10.
5
mb
a
r
G25 -10.5mbar
1
3/32"
Note: Unit to be installed outside
only.
Note: Expansion valve must be
adapted to the type of gas used:
• G 20: 20 mb
• G 25: 25 mb
• G 31 (Propane): 37 or 50 mb
Table 50 - Gas type designation per country
Table 51 - Gas burner data
Notes:
(1) G20 heating output given for 34,02 MJ/m
3
(15°C-1013)
(2) G25 heating output given for 29,30 MJ/m
3
(15°C-1013)
(3) G31 heating output given for 46.34 MJ/kg
Burner G120 G200 G250
Gas Type G20 G25 G31 G20 G25 G31 G20 G25 G31
Heating Input (kW) 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0
Heating Output (kW) 24,6 25 25,1 41,3 41,7 41,9 51,9 52,3 52,6
Efficiency 93% 93% 93% 93% 93% 93% #DIV/0! #DIV/0! 93%
Gas Flow rate (Nm
3
/h)
2,8 3,3 2,1 4,7 5,5 3,5 5,9 6,9 4,4
Specific Heating Capacity (MJ/kg) 34,02 29,3 46,34 34,02 29,3 46,34 34,02 29,3 46,34
Heating Output per stage (1st/2nd) (%) 0%-100% 0%-70%-100% 0%-70%-100%
Inlet pressure Min/Nominal/Max (mbar) 17 / 20 / 25 20 / 25 / 30 25 / 37 / 45 17 / 20 / 25 20 / 25 / 30 25 / 37 / 45 17 / 20 / 25 20 / 25 / 30 25 / 37 / 45
Low pressure switch setting (mbar) 15 15 20 15 15 20 15 15 20
Manifold pressure (mbar) 7,5 10,5 24,9 7,5 10,5 24,9 7,5 10,5 24,9
No of injectors 3 4 5
Injector size (Drill / mm) (33) / 2.87mm (51) / 1.70mm (1/8") / 3.175mm (49) / 1.85mm (1/8") / 3.175mm (49) / 1.85mm
Smoke analysis
Gas / Voltage
G20 - 20mbar
400/3/50
G25 - 25mbar
400/3/50
G31 - 37mbar
400/3/50
G20 - 20mbar
400/3/50
G25 - 25mbar
400/3/50
G31 - 37mbar
400/3/50
G20 - 20mbar
400/3/50
G25 - 25mbar
400/3/50
G31 - 37mbar
400/3/50
CO % 0.0012% 0.0017% 0.0003% 0.0020% 0.0015% 0.0011% 0.0020% 0.0015% 0.0011%
Nox ppm 59 ppm 44 ppm 8.7 ppm 10 ppm 10 ppm 11 ppm 10 ppm 10 ppm 11 ppm
CO
2 % 8,29% 9,20% 8,90% 7,10% 7,10% 8,28% 7,10% 7,10% 8,28%
Destination countries Pressure in mbar Category
FR 20/25 37 II2E+3P
DE-LU-PL 20 I2E
CH-ES-GB-IE-PT-CZ-GR 20 37 II2H3P
NL 25 30 II2L3P
IT-AT-NO-FI-SE-EE-LT-LV 20 I2H
IT 28-30/37 I3+
BE 20/25 I2E
DK-SK-SI-TR 20 I2H
BE-PL 37 I3P
AT-DE-LU-HU-SK 50 I3P
HU 25 I2H