Bosch AQUA STAR 250SX LP - Manual (Page 19)

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Appliance details
19
2.14 Electrical connections
The 250 SX requires an electrical power supply from a
120VAC 60Hz circuit and must be properly grounded.
A means for switching off the 120VAC power supply
must be provided.
The heater is wired as shown in the wiring diagram
(chapter 6, Fig. 36).
2.15 Operating instructions
B Before proceeding with the operation of the heater
make sure that the system is filled with water.
B Turn off power supply to heater.
B Open the cold water inlet supply to the heater fully.
B Open a hot water faucet to permit the water to fill the
heater and the piping and to eliminate the air trapped
in the system.
B Close the hot water faucet after the water flows freely
and all the air has escaped from the system. Turn on
power supply to heater. The water heater is now
ready to operate.
2.16 For your safety read before
operating your water heater
A. This appliance is equipped with electronic ignition for
lighting the main burners. When turning the heater on,
follow these instructions exactly.
B. Before operating the unit, set the On/Off switch to
the On ( I ) position.
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.
C. Use only your hand to turn 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.
D. 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.
2.17 Lighting and operating instructions
B 1. STOP! Read the previous safety information.
B 2. The gas valve must be shut off by putting the ON/
OFF switch to position (0). Wait five (5) minutes to
clear out any gas. If you smell gas, STOP! Follow “B”
in the safety information above. If you do not smell
gas, go to the next step.
B 3. This appliance is equipped with electronic ignition
for lighting the main burners. When turning the
heater on, follow these instructions exactly.
B 4. Set the ON/OFF switch to the (I) position. In this
position, the water heater is ready to use.
B 5. Open a hot water tap.
B 6. The burners will remain on until the hot water tap
is turned off.
Warning: For safety reasons,
disconnect the power supply to the
heater before any service or testing is
performed.
Warning: This heater must be
electrically grounded in accordance
with the most recent edition of the
National Electrical Code. NFPA 70. In
Canada, all electrical wiring to the
heater should be in accordance with
local codes and the Canadian Electrical
Code, CSA C22.1 Part 1. Do not rely
on the gas or water piping to ground the
metal parts of the heater.
i
NOTE: A default temperature setting of
122 F will appear on the display screen.
Warning: If you do not follow these
instructions exactly, a fire or explosion
may result causing property damage,
personal injury or loss of life.