Rinnai REB-KA2024FF User manual

REB-KA2024FF | REB-KA2529FF | REB-KA3135FF | R331 | RC34
RINNAI GAS BOILER
If the information in this manual is not followed exactly, it could cause property damage, personal injury or loss of life.
So please read it carefully.
Keep this manual for future reference.
Appearance and specification of the project subject to change for quality improvement without notice in advance.

Contents
Safety Information
Room temperature controller
Operation
CH mode operation
Rapid heating
DHW mode operation
DHW preheating
Auto mode operation
Outgoing mode operation
Reservation mode operation
Cleaning & Maintenance
Basic troubleshooting
USER
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Safety Information
Please read this manual prior to use.
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
Danger
Warning
Caution
Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may in moderate
or minor injury or property damage.
Indicates a condition which must be complied.
Indicates a condition which should be avoided.
Indicates a ground connection for the prevention of an electric shock.
Warns of a risk of fire. Keep the area clean and free from flammable materials.
Warns of a risk of injury or property damage when contacting.
If you smell gas vapor,
1) Close the gas shutoff valve
2) Open the windows and doors
3) Contact the Rinnai service.
Use a remotely located phone.
If you detect earthquake, fire, gas vapor, noise or irregular smell, turn off the power
immediately and close the gas shutoff valve and open the windows and doors.
Excessively hot water is dangerous, especially for young children and the infirm.
The water heater allows you to control the temperature of your hot water to safe levels.
Water temperature over 50℃ can cause severe
burns instantly or even death from scalding.
Children, disabled and the elderly are at the
highest risk of being scalded by excessively
hot water.
Always test the temperature of the water before
bathing or showering.
Burns from hot water taps can result in very
severe injuries to young children.
Hot water at 60℃can severely burn a child in less
than a second. At 50℃it takes five minutes.
Bu rns can occur when children are exposed directly
to hot water or when they are placed into a bath
which is too hot.
Danger
Hot
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Danger
Do stay with children whenever they are in the bathroom.
Do take them out of the bathroom if you need to answer the phone or
door.
Do test the temperature of the water with your elbow before placing your
child in the bath.
Do make sure that the tap is turned off tightly.
Do consider setting your Rinnai condensing at a maximum temperature
or 50℃
Do install a child proof tap cover or a child resistant tap.
Consider child-resistant taps or inexpensive tap cover, both of which prevent
a child’s hand from turning on the tap.
Do not leave a toddler in the care of another small child. The older child may
not have safely set the temperature.
Consider reducing the temperature of the water supplied to the hot tap 50 ℃.
This approach can be extremely valuable because it requires a one time action
for a long term reduction in risks of scalds.
This type of automatic protection is important during times when a parent or
carer has been distracted,
This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge, if they have been given supervision or instruction
concerning the use of the appliance, in a safe way, and understand the
hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without
supervision.
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Must not attempt to repair, replace or disassemble the boiler.
Improper adjustment, alteration, service or maintenance could significantly affect
the safety of the product. Contact the Rinnai service or refer the manual
if you detect any unusual condition.
Must use the gas indicated on the data plate
Check to ensure that the gas in use matches
with the gas indicated on the name plate.
If they are not, there could be incomplete burning
of the gas, resulting in carbon monoxide
poisoning or product failure.
When moving, check to ensure that the gas in
use matches with the gas indicated on the data
plate. data plate.
Warning
Do not place flammable objects near the boiler.
It could cause a product failure or fire due to
overheating.
Must check that a exhaust pipe is properly
installed.
Must check that a exhaust pipe is connected well
and good condition.
Do not touch exhaust pipe or vent system of
the boiler when operating.
Burns can occur.
When you detect abnormal noise, vibration
or gas,
Stop the boiler and then, contact the Rinnai
service. Use it only after the inspection.
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Gas shut-off valve
Grounding
Grounding
Must check the shut-off valve to make sure that
it is opened.
Check to make sure that the gas shut-off valve
is opened.
When there is no supply of gas, the boiler would
not operate.
Caution
Check the installation condition.
The gas boiler should be installed by a qualified installer.
Check the voltage at the electrical outlet to
make sure that it is within the range of voltage.
(195V~253V)
Also, do not attempt to extend a power cord.
The extension of a power cord by using a
multi-tap or others could result in an electric
shock or fire.
Do not block the exhaust vent.
Covering the exhaust vent with vinyl or fabric to
prevent wind or rain could cause monoxide
poisoning.
Check to make sure that each room valve
of allotter is opened and air is properly
removed.
Do not drink water collected inside the unit or use it for cooking. It might be polluted by
bacteria and/or rust.
A metal pipe or metal flexible hose should be
used as gas pipes to be connected to the boiler.
Rubber hose might get damaged.
As for the gas shut-off valve, use a ball valve
for gas.
Do not use heating appliances under the room controller.
Failure to read the indoor temperature could lead to malfunction of the boiler.
Use the boiler only for heating or water heating.
Use of the boiler for improper purposes could result in fire or malfunction of the boiler.
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Check if the power cord of the boiler is plugged.
A freeze protection function activates only when
the boiler is on.
Caution for freeze protection
Do not close the each room valves of allotter
and shut-off valves even if the boiler is not used
for 2 to 3 days.
Exposed pipes must be wrapped with insulating
materials.
Installation of hot wires on pipes could protect the
boiler from freezing.
If water pipes are frozen, there would be no supply of hot water. Use a hair dryer or a portable
electric heater to unfreeze the water pipes and hot water pipes, and if such emergency measure
does not work, contact the Rinnai service.
Installation of hot wires on pipes could protect the boiler from freezing.
Emergency Measures for Frozen Water Pipes
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Room temperature controller
Increase the heating
temperature(up)
Decrease the heating
temperature(down)
CH mode
Increase the hot
water temperature(up)
Reduce the hot
water temperature
DHW mode
Reservation mode
operation
Outgoing mode
operation
DHW mode operation
CH mode operation
Outgoing mode
operation
Accessories
Check to make sure all the accessories shown in below come with the boiler.
Check the number of all the accessories.
Remove the packaging paper, Styrofoam and tape from the accessories.
Keep this manual for future reference.
Remote Controller Manual Screws for the
Remote Controller (x2)
Wiring of controller
Reservation
mode operation
Hot water preheating
Internet control
sign(optional)
Reservation/
absence time
Auto mode operation
Auto mode operation
Eco-Combustion
Service mode
Heating temperature
(Set Temperature
/Current Temperature)
Decrease the hot
water temperature(down)
Combustion
Hot water temperature

Space Heating Mode.
The space heating mode is to maintain the indoor
temperate at the set temperature while the
temperature sensor detects the indoor
temperature. When a user sets the indoor
temperature, the space heating supply water
temperat
ure is set and the boiler starts to operate.
The default heating mode is the space heating
mode.
Operation
Flow temperature mode
The flow temperature mode is detecting the
heating supply water temperature.
A user can manually adjust the heating supply
water temperature.
The default flow temperature is 55℃.
The default spaceheating temperature is 22℃.
Flow temperature mode( + )
To change the CH mode operation and then,
hold both the outgoing button and the reservation
button for 3 seconds.
There are two heating modes: Space heating mode and flow temperature mode.
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Press the CH mode button. ( )
CH mode operation( )
Press (Up) or (Down) button until the
desired temperature appears on the display.
When the current temperature is higher than the
set temperature, the boiler does not operate.
To cancel the CH mode operation, press the
CH mode button once.
When the [Space heating mode] is on, the set
temperature appears on the display and when
the [Flow temperature mode] is on, the current
temperature appears on the display.
To view the heating supply hot water temperature, press the auto mode button for 2 seconds.
Then, the supply hot water temperature appears on the display for 10s.
(5℃ ~ 40℃)(50℃ ~ 80℃)
(Space temperature) (Flow temperature)
Eco Sign appears on the display when the boiler operates in the eco-friendly
combustion, which could lower the gas cost and minimize the emission of hazardous
gases due to the high energy efficiency.
The boiler starts to operate.
When the boiler starts to operate, ( ) and ( )
appear on the display.
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