26
26
Operating Instructions
Preventing Damage from Freezing
If water will not flow because it is frozen
1. Close the gas and water valves.
2. Turn off the operation button.
3. Open the water supply valve from time to time to check whether water is running.
4. When the water is flowing again, check for water leaks from the equipment and piping, or
follow steps 1 through 4 on P12 (“Initial Operation”).
The freeze prevention heaters will not prevent
the plumbing external to the unit from freezing.
Protect this plumbing with insulation. If you are
still worried that your heater will freeze, contact
the nearest Bosch Service Dealer.
When the temperature drops, the
freeze-
prevention heaters
are automatically
activated to keep the unit warm and
prevent it from freezing.
Normal cold [
outside temperatures between 0
°
C - 10
°
C with no wind
]
The heater and piping can be damaged if cold temperatures cause water to freeze inside the
unit. The damage can be prevented using following method:
At these temperatures, the units have freeze prevention heaters that will prevent freezing.
* Do not disconnect the power. The freeze prevention heaters will not work if the power
is disconnected.
* The freeze prevention will work regardless of whether the operation button on the remote
controller has been turned on.
•
If the heater or the piping is frozen, do not use the heater, or it may become damaged.
•
Repairs for damage caused by freezing, is not covered by the warranty.
