Lighting Instructions; Service Hint; To Turn Off Gas To Appliance - Bosch WR400-1K Series Installation Operation & Maintenance

OPERATING INSTRUCTIONS
WARNING!
If the water heater has been damaged or exposed to fire or
sooting, or if any part has been underwater, do not use.
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 underwater and to clean
the heat exchanger assembly and water valve.
FILLING
Before proceeding with operation of the water heater make
sure that the system is filled with water:
•
Make sure drain is closed. See figure 8, below.
•
Open a nearby hot water faucet to permit the water to
fill the heater and piping.
•
Close the hot water faucet after the water flows freely
and all air has escaped from the system.
The water heater is now ready to be lit.
Figure 8

SERVICE HINT

The strainer (screen) in the water valve, located in the inlet
of the water valve, may require occasional cleaning due to
foreign material in the water supply. This will restrict the
flow of water and may effect heater operation and prolong
filling time. To inspect the strainer, close the cold water supply
valve ahead of the heater, disconnect the S- bend from the
inlet of the water valve and remove strainer from inlet. Clean
if required, replace strainer in inlet to the water valve,
reconnect S- bend and turn on water supply.
Light the water heater in accordance with the instructions
on the Lighting and Operating Plate on the water heater.
For your convenience, the instructions are repeated below:

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above on this plate.
2. The gas valve should be turned off by sliding the gas
valve button to the far left, under the "OFF" mark,
3. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow "B" in the safety information
above on this plate. If you don't smell gas, go to next
step.
4. The pilot burner is located behind the peephole located
in the front center of the jacket directly below this
instruction plate.
5. Slide the gas valve button to the right, under "PILOT"
MARK, .
6. Fully depress the gas valve button and light the pilot by
pressing the "PILOT IGNITER" button,
have to be repeated.
7. Observe the pilot flame through the peephole. The gas
valve button should be held down at least 10 seconds
with pilot burning. When the gas valve button is released
the pilot should continue to burn:
•
If the gas valve button does not pop up when released
stop and immediately call your service technician or
gas supplier.
•
If the pilot does not stay lit, repeat steps 1 through 7.
•
If the pilot will not stay lit after several tries, slide the
gas valve button to the left under the "OFF" mark
call your service technician or gas supplier.
8. Slide gas valve button to the far right, under the "ON"
mark . The heater will now fire when water is drawn
at a rate greater than the threshold flow rate (see
manual*).
Note: If main burner should fail to ignite, make sure pilot is
burning. If not, repeat lighting procedure steps 1 through 8.

TO TURN OFF GAS TO APPLIANCE

1. Slide the gas valve button to the far left, off position,
under the "OFF" mark,
individual shutoff valve.
* = see TEMPERATURE REGULATION section.
.
. This may
and
and close the heater's
7