Unigas R91 VS Series, Manual Of Installation - Use - Maintenance, Page: 6 / 60

6
Burner model identification
Burners are identified by burner type and model. Burner model identification is described as follows.
Specifications
Type R91 Model MG. PR. S. *. VS. 8. 50. ES
(1) (2) (3) (4) (5) (6) (7) (8) (9)
(1)BURNER TYPE R91 - R92 - R93 - R515 - R520 - R525
(2)FUEL
(3)OPERATION
PR - Progressive MD - Fully modulating
(4)BLAST TUBE S - standard L - Extended
(5)DESTINATION COUNTRY * - see data plate
(6)BURNER VERSION VS - Short flame
(7)EQUIPMENT 0 = 2 Gas valves
1 = 2 Gas gas proving system 7 = 2 Gas high gas pressure switch
8 = 2 Gas gas proving high gas pressure switchl
(8)GAS CONNECTION 50 = Rp2 65 = DN65 80 = DN80 100 = DN100
(9) GAS CONNECTION
ES = with no O
2
trim control, with no VSD control
EO = with O
2
trim control, with no VSD control
EI = with no O
2
trim control, with VSD control
EK = with O
2
trim control, with VSD control
BURNER TYPE R91..VS R92..VS R93..VS
Output min. - max. kW
480 - 2670 480 - 3050 550 - 4100
Fuel
Category
see next paragraph ”Gas category”
Gas rate min - max (Stm
3
/h)
51 - 283 51 - 323 58 - 434
Gas pressure
min.- max. mbar (see Note 2)
Power supply 400V 3N ~ 50Hz
Total power consumption
kW 4.5 6 8
Electric motor
kW 4 5.5 7.5
Protection
IP40
Approx. weight
kg 320 370 420
Operation
Progressive Fully modulating
Gas Train50
Gas connection
2” / Rp2 2” / Rp2 -
Gas Train65
Gas connection
2”1/2 / DN65 2”1/2 / DN65 2”1/2 / DN65
Gas Train
Gas connection
3” / DN80 3” / DN80 3” / DNN80
Gas Train
Gas connection
4” / DN100 4” / DN100 4” / DN100
Operating temperature °C
-10 / +50
Storage Temperature °C
-20 / +60
Working service *
Intermittent
Note1:
All gas flow rates are referred to Stm
3
/h (1013 mbar pressure, 15 °C temperature) and are valid for G20 Natural gas (nett
calorific value: 34.02 MJ/Stm
3
).
Note2: Maximum gas pressure = 500mbar (with Siemens VGD gas valves).
Minimum gas pressure = see gas curves.
M
G
- Natural gas-Light oil
M
G
- Natural gas-Light oil