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Circuit Diagram; Technical Characteristics - Bosch WR10**B SERIES Installation And Operating Instructions Manual

Gas instantaneous water heater
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1.6

Circuit diagram

1.7

Technical characteristics

Temperature control at maximum setting
Temperature control at minimum setting
*
H
15°C - 1013 mbar - dry :
i
**
This figure must not be exceeded taking account of water expansion
***
At maximum rated heat output
4
Technical Data
Rated max. heat output
Rated min. heat output
Output (modulation range)
Rated max. heat input
Rated min. heat input
Supply pressure
Natural gas
LPG (butane/propane)
Consumption
Natural gas
LPG (butane/propane)
Number of injectors
Max. water pressure**
Temperature increase
Flow rate
Min. operating pressure
Temperature increase
Flow rate
Min. operating pressure
Draught requirement
Flow rate
Temperature
Natural gas
34.2 MJ/m
(9.5 kWh/m
3
LPG: Butane 45.7 MJ/kg (12.7 kWh/kg)
1
Servo valve (normally open)
2
Diaphragm valve
3
Main valve (normally closed)
4
Ionisation detector
5
Igniter electrode
6
Flue gas safety device
7
Temperature limiter
8
Igniter unit
9
LED indicator for battery charge level
10
LED indicator for burner status
11
On/Off switch
12
Batteries, 1.5 V
13
Microswitch
Fig. 4
Symbol
Unit
P
kW
n
P
kW
min
kW
Q
kW
n
Q
kW
min
G20/25
mbar
G30/G31
mbar
3
G20/25
m
/h
G30/G31
kg/h
p
bar
w
°C
l/min
p
bar
wmin
°C
l/min
bar
mbar
g/s
°C
)
3
Propane 46.4 MJ/kg (12.9 kWh/kg)
WR10
WR11
17.4
19.2
7.0
7.0
7.0 - 17.4
7.0 - 19.2
20.0
21.8
8.1
8.1
20/25
28-30/37
2.3
1.7
12
12
12
12
50
50
5.5
5.5
0.15
0.15
25
25
10
11
0.2
0.2
0.015
0.015
13
13
170
170
6 720 607 823

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