16
17
1. Push the operation button and confirm
that the operation light comes on.
2. Close the gas supply valve.
3. Open a hot water fixture and let it run
for approx. 1 minute, and then check
that the number 11 is flashing on the
remote controller display.
* It is possible that a different number may be displayed
on the remote controller, but as long as it is flashing,
you may continue.
4. Open a hot water fixture, and keep a small amount of hot
water running. (.1 gal./minute or about .2” thick.)
* If there is a mixing valve, set it to the highest level.
5. The flow may become unstable from time to time. Check
the flow 30 minutes later.
When any button on the remote controller is
pushed, a sound is emitted. This sound can be
muted if you desire.
Water level alarm cannot be muted.
1
How to use
Muting the Sound of the Remote Controller
If water will not flow because it is frozen
Prevention of damage caused by freezing in cold temperatures
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 p.11 (“Initial Operation”).
The freeze prevention heaters will
not prevent the plumbing external
to the unit from freezing. Protect
this plumbing with insulation or an
electric heater. If you are still
worried that your heater will
freeze, contact the nearest Noritz
agent.
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 more than 5
°°°°°
F 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 with the 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 get damaged.
•
Repairs for damage caused by freezing is not covered by the warranty.
For severely cold temperatures
[
]
Run water to prevent freezing.
•
This method can be applied
not only to the heater, but also
to the water supply, water
piping and a mixing valve.
•
Remember that if the mixing
valve is set to the maximum
level, there is a risk of scalding.
•
If freezing still might occur,
drain the water from the unit
following the steps on p.18.
Hot water fixture
.2” thick
outside temperature including wind chill
less than 5
°°°°°
F
Sound
Mute
No sound
1
With the remote controller off, press
and hold the operation button for five
seconds to turn the sound on or off.
After approx.
5 sec.,
sounds.
Summary of Contents for N-084
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