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
13/32"
G
20 - 7.
5
mb
a
r
G20 - 7.5mbar
G
2
5
-10.
5
mb
a
r
G25 -10.5mbar
13/32"

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/m3(15°C-1013)
(2) G25 heating output given for 29,30 MJ/m3(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 (Nm3/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% 0.0 020% 0.0 015% 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
CO2% 8,29% 9,20% 8,90% 7,10% 7,10% 8,28% 7,10% 7,10% 8,28%
Destination countries Pressure in mbar CategoryFR 20/25 37 II2E+3PDE-LU-PL 20 I2ECH-ES-GB-IE-PT-CZ-GR 20 37 II2H3PNL 25 30 II2L3PIT-AT-NO-FI-SE-EE-LT-LV 20 I2HIT 28-30/37 I3+BE 20/25 I2EDK-SK-SI-TR 20 I2HBE-PL 37 I3PAT-DE-LU-HU-SK 50 I3PHU 25 I2H