Technical Characteristics and Dimensions
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6 720 648 592 (2011/06)
2.11 Technical characteristics
Technical characteristics
Symbol
Units
WR11
WR14
WR18
Power and flow
Nominal useful power
Pn
Btu/h
65570
80595
104165
Minimum useful power
Pmin
Btu/h
23905
23905
23905
Useful power (adjustment range)
Btu/h
23905-65570
23905 - 80595
23905 - 104165
Nominal thermal flow
Qn
Btu/h
74450
92210
117825
Minimum thermal flow
Qmin
Btu/h
27660
27660
27660
Gas data
1)
1) Hi 15 °C - 1013 mbar - dry: Natural gas 34.02 MJ/m
3
(9.5 kWh/m
3
)
LPG: Butane 45.65 MJ/kg (12.7 kWh/kg) - Propane 46.34 MJ/kg (12.9 kWh/kg)
Supply pressure
Natural gas H
G20
kPa
2
2
2
LPG (Butane/Propane)
G30
kPa
2,8
2,8
2,8
Consumption
Natural gas H
G20
m3/h
2,2
2,77
3,5
LPG (Butane/Propane)
G30
Kg/h
1,75
2,2
2,79
Number of injectors
12
14
18
Water data
Maximum permissible pressure
2)
2) Considering the water dilution effect this value must not be exceeded.
pw
psi
170
170
170
Temperature selector in fully clockwise position
Temperature rise
°C
50
50
50
Flow range
l/min
2 - 5,5
2,0 - 7
2,0 - 8,8
Minimum operating pressure
pwmin
psi
1,5
1,5
3,0
Minimum pressure for maximum water
flow
psi
3,6
5,0
7,2
Temperature selector in fully anti-clockwise position
Temperature rise
°C
25
25
25
Flow range
l/min
4 - 11
4 - 14
4 - 17,6
Minimum pressure for maximum water
flow
psi
8,7
14,5
19
Combustion products
3)
3) For nominal calorific power.
Minimum low pressure
mbar
0,015
0,015
0,015
Flow
g/s
13
17
22
Temperature
°C
160
170
180
Table 6
