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Comprasion
Application
Therm 4000 O WR 15-2 P Gas tankless water heater
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Brand:
Bosch Home Comfort
How it works
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About solution
The Bosch Therm 4000 O WR 15-2 P gas tankless water heater will pleasantly surprise you with its features:
- Power modulation (for models with WR index)
- Separate control of power and water flow
- Connects to an existing chimney
- Constantly burning pilot light
- The minimum required operating water pressure is 0.1 atm
Technical equipment
- Piezoelectric ignition
- Automatic temperature and water flow control when the water pressure in the water supply system changes (for models with WR index)
- Thermocouple for flame control
- Temperature limiter to protect the heat exchanger from overheating
- Draught control device with automatic shutdown of the column
- Atmospheric gas burner made of stainless steel with the possibility of switching to LPG operation
- Tin-free copper heat exchanger with a service period of 15 years
Properties
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Burner ignition system
Piezo ignition
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Energy efficiency class
B
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Nominal thermal power, min/max, kW
7-26,2
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Nominal thermal load, min/max, kW
8,1 – 29,6
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Permitted natural gas pressure, mbar
13
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Natural gas consumption, at maximum capacity, m3/h
3.2
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LPG consumption, at maximum capacity, kg/h
2.4
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Outlet water temperature, C
35-60
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Hot water flow at ΔT = 50 K, l/min
2-7,5
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Hot water flow at ΔT = 25 K, l/min
4-15
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Minimum working pressure, bar
0.2
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Flue gas temperature, at maximum capacity, °С
180
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Mass flow of flue gases at maximum power, kg/hour
79
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External diameter of the flue pipe, mm
132.5
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Permitted pressure of liquefied gas (propane/butane), mbar
30