For Your Safety Read Before Operating Your Water Heater; Power; Temperature Selection - Bosch GWH C 800 ES Installation Instructions Manual

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. 49
Off
B To shut down the appliance press the On/Off button
again.
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5.4

Temperature selection

To select hot water temperature:
B Press buttons
or
temperature.
Fig. 50
Setting the water temperature
The desired temperature of the hot water can be
adjusted on the front control panel of the heater.
The GWH C 800 ES 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.
Note: The water heater, running at minimum BTU, may
still achieve temperatures above the desired set
temperature. Low flowing 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.
Solar mode
The water heater will not ignite if inlet water temperature
exceeds the set temperature on the appliance. In this
condition, the solar mode indicator will show on the
LCD display. See Fig. 47, page 28.
Fig. 51
Operation instructions
in order to reach desired
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