4
6 720 606 692 (02.05)
2.
Technical Data
1.5
Wiring Diagram
Diagram 3
1 - Servo gas valve
2 - Membrane valve
3 - Pilot gas valve
4 - Sensor electrode
5 - Sparking plug
6 - Temperature limiter
7 - Ignition unit
8 - Hydrogenerator
9 - Switch
10 - Led failure indicator
11 - Led indicator main burner condition
Appliance Ratings
WR 250 - 8...
WR 325 - 8...
WR 400 - 8...
Rated output
MJ/h (kW)
63
(17,5)
82
(22.75)
101
(28)
Rated input
MJ/h (kW)
79
(22,0)
104
(29,0)
127
(35,3)
Gas inlet pressures
Natural gas
kPa (mbar)
1,11
(11,1)
1,11
(11,1)
1,11
(11,1)
LP gases
kPa (mbar)
2,75
(27,5)
2,75
(27,5)
2,75
(27,5)
Gas consumption
(based on gross c.v. at 15°C/60°F - 1013 mbar - dry
Natural gas
(10,5 kWh/m
3
- 9000 kcal/m
3
- 37,8 MJ/m³)
m³/h
2,1
2,8
3,4
LP gas
(13,8 kWh/m
3
- 11800 kcal/m
3
- 49,6 MJ/kg)
kg/h
1,6
2,1
2,6
Water data
Max. water flow
l/min.
10
13
16
Temperature rise
°C
25 25
25
Min. inlet water pressure
bar
0.6
1,0
1,3
kPa
60
100
130
Min. water flow
l/min.
2
2
2
Temperature rise
°C
50
50
50
Min. inlet water pressure
bar
0,3
0,4
0,5
kPa
30
40
50
Burner pressure for maximum output
Natural gas
kPa (mbar)
0,89
(8,9)
0,84
(8,4)
0,78
(7,8)
LP gases
kPa (mbar)
2,60
(26,0)
2,60
(26,0)
2,60
(26,0)
Burner pressure for minimum output
Natural gas
kPa (mbar)
0,15 - 0,25
(1,5 - 2,5)
0,15 - 0,25
(1,5 - 2,5)
0,15 - 0,25
(1,5 - 2,5)
LP gases
kPa (mbar)
0,35 - 0,65
(3,5 - 6,5)
0,35 - 0,65
(3,5 - 6,5)
0,35 - 0,65
(3,5 - 6,5)
Main burner injectors
Natural gas
Ø mm
1,20
1,30
1,30
LP gases
Ø mm
0,75
0,79
0,76
Pilot burner injector
Natural gas (Identity nr.)
19
19
19
LP gases (Identity nr.)
74
74
74
