Your Water Heater; Power; Temperature Selection - Bosch C 1210 ES Installation Manual

Operation instructions
5.2 For your safety read before
operating your water heater
Warning: If you do not follow these
instructions exactly, a fire or explosion
may result causing property damage,
personal injury or loss of life.
A. This appliance is equipped with electronic ignition for
lighting the main burner. When turning the heater on,
follow these instructions exactly.
WHAT TO DO IF YOU SMELL GAS
B Do not try to light any appliance.
B Do not touch any electric switch; do not use any
phone in your building.
B Immediately call your gas supplier from a neighbors
phone. Follow the gas supplier's instructions.
B If you cannot reach your gas supplier, call the fire
department.
B. Use only your hand to press the on/off control switch.
Never use tools. Follow these instructions exactly. If
control switch is jammed, close the gas supply and call
a qualified service technician. Attempted forceful repair
may result in a fire or explosion.
C. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
5.3

Power

On
B To start the appliance press the On/Off button.
Fig. 56
Off
B To shut down the appliance press the On/Off button
again.
38
5.4

Temperature selection

To select hot water temperature:
B Press buttons or
temperature.
Fig. 57
Setting the water temperature
The desired temperature of the hot water can be
adjusted on the front control panel of the heater.
The tankless water heater has an electronically
controlled gas valve that modulates the burner input in
response to both varying hot water flow rates and/or
changes in any incoming and outgoing water
temperatures. Set the temperature on the appliance to
the desired outlet temperature. Avoid setting the
appliance to a higher temperature and mixing in cold
water. This causes unnecessary gas consumption and
risks the formation scale/mineral deposits. See
Section 3.10 Water Quality.
Note: The water heater, running at minimum BTU, may
still achieve temperatures above the desired set
temperature. Low flow rate fixtures are the leading
cause of this type of temperature overshoot. To combat
this symptom, clean fixtures or replace with higher
flowing ones if necessary.
Saving water resources:
B Make sure you close all the taps after any use. Avoid
leaving the taps dripping. Repair any leaking tap.
B Define the temperature you want, in the appliance or
with the remote control. This way you have the
precise water flow needed (mixing cold water to
regulate temperature will increase the water flow with
consequent waste of water)
in order to reach desired
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