Rinnai Zen I24 User And Installation Manual page 4

Do not make any changes to the appliance: do not attempt to repair, replace components, open sealed parts or
disassemble the appliance. Any tampering can lead to risks to health, damage to property, compromise the safety and
proper functioning of the product: for any type of repair, modification of settings or maintenance of the product and its
accessories, we recommend contacting the Rinnai technical service center.
Use only original Rinnai parts.
If you notice unusual noises, smells or vibrations, stop the appliance
immediately and contact CHNZ or your local installation company.
If you smell gas:
- close the main gas tap;
- open doors and windows to ventilate the room;
- contact your technician and wait outside the house.
In the event of an earthquake, fire, gas leaks, noises, stop the gas
and electricity supply and open doors and windows.
Water temperature over 50°C can cause severe burns instantly or even death from
scalding. Hot water at 60°C can severely burn a child in less than a second. At 50°C it
takes five minutes. Always test the temperature of the water before any use. To prevent
these risks, Rinnai recommends to consider setting your hot water production at a
maximum temperature of 50°C. in all cases CHNZ recommends a tempering valve to be
installed.
Do not store flammable objects near the appliance: it could cause a product failure or
fire. Do not spray aerosols in the vicinity of this appliance while it is in operation.
Do not insert objects into the flue outlet. Do not spray water directly into the flue outlet.
Keep, trees, shrubs, etc. well clear of the flue outlet. On colder days steam may
discharged from the flue outlet. This condition is normal for high efficiency appliances and
does not indicate a fault.
Do not touch the unit cover or the flue outlet.
Before connecting the mains cable, check that the power supply is suitable: make sure
that the electrical system is up to standard and has a good earth connection; otherwise,
the appliance may be damaged or malfunctioning.
It is not recommended to extend the supplied electrical cable (eg through the use of
extension cords or multiple sockets). In case of damage, replace the electric cable with
an original one. Replacement may only be performed by Rinnai authorized technical
personnel.
After installation (or long periods of inactivity) it is advisable to let the hot water run before
the use.
It is recommended the installation of a system to collect and drain water under the
appliance in the case of water leakage to prevent material and property damages.
Frost protection: Make sure that the power cord of the appliance is plugged-in,
and the electrical power is always available.
In the event of a power failure the water heater will not operate without electricity. If the
power fails water heating will cease. When the power is restored the water flow may need
to be stopped and restarted (and a controller, if fitted, switched on) in order for water
heating to continue.
The frost protection system activates only when the appliance is electrically powered. All
pipes must be wrapped with insulating materials to prevent heat loss. The thickness of
insulation should be between 25mm and 50mm according to outdoor temperatures.
If extremely freezing conditions are expected, turn off water and gas, and
drain all water from the appliance. If power and the automatic frost protection are connected,
freezing will be prevented. (Anti-frost protection is fitted as standard equipment on all hot
water units). If water pipes are frozen, there would not be water flow in the system. Use a
heat source (e.g. hair dryer) to unfreeze the frozen components and pipes.
Before using the appliance after defrosting contact the CHNZ service to verify possible
damages.
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