Modena Rapido Series Owner's manual

User Manual Book
(Gas Instant Water Heater)
Rapido Series
GI 1020 B, GI 0620 B

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Thank you for your trust in choosing MODENA products for your household
needs. With your satisfaction as our priority, we constantly aim to deliver
stylishly designed products equipped with state-of-the-art technology to
assist you in your daily activities.
This is your guidebook containing everything you need to know about our
product. Please reach us if you need further assistance or other information
via our Customer Care or our official website www.MODENA.com.

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CONTENTS PAGE.
Introduction 2
Part 1 : Name of Parts 4
Part 2 : Important Safety Information 4
Part 3 : Characteristics and Usage 5
Part 4 : Installation 5
Part 5 : How to Use 9
Part 6 : Preventive Action 11
Part 7 : Troubleshooting 15
Part 8 : Specification 17
Part 9 : Internal Wiring Diagram 17

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When the water heater is operated, gas combustion will consume a large amount of oxygen and
exhaust much carbon monoxide. To avoid the great harm for human health or even death caused by
excessive carbon monoxide inhalation, MODENA sincerely advise all users /to:
Read this manual book carefully before installing and operating the water heater for the first time.
Do not install the water heater in the bathroom.
Install and use the water heater strictly in accordance with the requirements stipulated in these
usage instructions.
Install a smoke exhaust duct to exhaust waste gases outside the room.
Make sure that the room where the water heater is installed has enough fresh air and well-
ventilated.
Once the outer wrapping and the inner wrappings of the various parts have been removed, check
and make sure that the appliance is in perfect condition. If you have any doubts regarding to the
quality and the completion of the appliance accessories, do not use the appliance and contact
MODENA Call Center.
The water heater must be installed by qualified technician.
In the case of a failure and/or malfunction, all repairs or settings must be done with maximum
care and attention by qualified technicians. For this reason, we recommend you to contact
MODENA Call Center, explaining the trouble in details and mention the name of the model.
The packaging materials used (such as cardboard, bags, polystyrene foam, nails, etc.) must not
be left anywhere in easy reach for children because the packaging materials could potentially
cause a hazard. To safeguard the environment, all packaging materials are environment-friendly
Part 2: Important Safety Information
Part 1: Name of Parts
Note:
1. Peeping Hole/ Observation Window
2. Water Volume Controller Knob
3. Battery Box
4. Cold Water Inlet
5. Hot Water Outlet
6. Gas Inlet
7. Flame Controller Knob
8. Water Temperature Display
Note: All pictures displayed in this manual
are based on the standard appearance of
the gas instant water heater and only for
illustration. The actual appearance of this
appliance is based on purchased model.

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and recyclable.
If there any questions about the operation procedure and the safety instruction, contact MODENA
Call Center
The gas instant water heater can supply the hot water quickly and continuously, so it is suitable to
provide hot water for bathing, washing and other cleaning.
This type of water heater equipped with the following features:
1. Digital Display for displaying the hot water temperature.
2. Water Control Automatic Ignition. By simply open the water valve and the igniter, this feature
will ignite automatically and the hot water will immediately be available.
3. Water Temperature Controller. Adjust the water temperature as needed.
4. Flue-type Exhaust Device. Exhaust waste gases out to keep the indoor air fresh.
5. Water Temperature Display. Provided with low battery indicator function.
6. “Low Water Pressure” Start-Up. This water heater can be turned on with low water pressure.
This feature equipped with a wide range of application.
7. Steady Water Volume. Effectively avoid the impact of the water pressure fluctuation on the water
volume and the outlet water temperature, as well as prevent the over-hot outlet water due to high
water pressure.
8. Flame-Out Safety. The water heater will automatically cut off the gas if the flame accidentally
flows out during the use period.
9. Water-Gas Linkage Controller. The water heater will automatically stop the combustion and
shut down if the water supply from the tap is blocked or the water valve is shut off.
10. Over Pressure Protection. When the pressure of the water supply is too high, the safety valve
can automatically relieve the pressure to avoid any damage to the water heater.
11. Thermal Protection. The water heater will automatically cut off the gas and stop working when
the temperature of the water output exceeds 90°C or dry-heating occurs.
12. Auto Cut-Off. The water heater will automatically cut off the gas and power after 20 minutes of
continuous operation. It can continue working after re-start.
Installation Requirements
1. Do not install this gas instant water heater in the bathroom.
2. Do not install the water heater in a place where the strong wind occurs, otherwise the flame of the
water heater will be blown out or the combustion will be incomplete.
3. Do not install the water heater outdoor (without roof).
Part 4: Installation
Part 3: Characteristics and Usage

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4. Do not install the water heater in the confined room. Install the water heater in well-ventilated
room with a volume more than 7,5 m3. There should be an air inlet with a cross section more than
0.06 m2 connected to the outdoor. The smoke exhaust pipe must also be installed.
5. Install the water heater in a place where the line of human sight and the flame observation
window are in the same height, that is 1.55 ~ 1.65 m above the ground. The water heater also
must be far away from flammable materials.
6. Do not place any open power cord, electric appliances, or gas pipeline above the installation site
of the water heater. Keep a horizontal distance more than 40 cm between the water heater and
the electric appliances. Do not install any gas appliance such as gas oven and gas stove
underneath this water heater.
7. Keep the distance more than 150 mm between the water heater, its surrounding walls and the
ceiling. Build the installation site with non-combustible materials. Otherwise, insulate it with heat
insulating panel. The distance between the insulating panel and the surrounding wall should be
more than 10 mm.
8. Install an inlet valve in the water inlet pipe of the water heater.
9. Place the end of the smoke exhaust pipe outside the room.

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10. For the liquefied petroleum gas (LPG) users, use the qualified gas pressure regulating valves and
hoses to ensure the water heater a proper operation and security use. For pipeline gas users, ask
the gas company or the relevant management authority to connect the gas pipe.
11. After the water heater is installed with a smoke exhaust pipe, during the use, do not turn on any
mechanical ventilation equipment such as the smoke exhaust ventilator and the exhaust fan in the
room where the water heater is installed or to which the water heater is connected.
Installation Modes
1. Keep the water heater vertical and not tilt during the installation. As shown in the below picture,
drill the holes vertically on the wall for the installation. Insert the expansion screws into the holes
on the top for the installation and insert plastic plugs into the installation hole at the bottom. After
installing (mounting) the water heater, install gaskets and nuts into the expansion screws and
screw up the nuts. Screw on the tapping screw at the bottom. User can choose A or B installation
mode according to the situation.
Note: The connectors of the water heater in the picture shown above would be in different order
for different water heater model. Make the real object as standard during the connection.
Warning! It is strongly forbidden to use this water heater with no smoke exhaust pipe installed.

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2. Cautions for the installation of smoke exhaust pipe :
a. The water heater must be installed with smoke exhaust pipe during the use. The pipe
dimension refers to the „Specification‟ section in this manual book. The pipe should be installed
according to the requirements in this manual.
b. Determine the length of corrugated tube as needed, but the total height of the tube should be
more than 2 m, and the horizontal length is no more than 3 m. The vertice quantity should be
no more than 2, and the angle is no less than 90°to reduce the smoke exhaust resistance.
c. Fasten the corrugated tube and the smoke vent of the water heater with clamps to prevent
exhaust gases being vented inside the room.
d. Make the flue pipe tilted 3°outward and downward to facilitate the outflow of condensate
water.
e. Cover the flue pipe with heat-insulating and fire-proof materials which its thickness must be
more than 20 mm on the flue gas pipe passes through the wall.
f. Do not hide the flue gas pipe inside the ceiling. Wrap up the flue gas pipe with the heat-
insulating material with more than 20 mm thickness if it is inevitable. Make a distance more
than 150 mm between the flue gas pipe and flammable materials, such as ceiling and furniture.
g. For maintenance, do not use cement to fill the gap between the flue gas pipe and the access
hole of the flue gas pipe on the wall.
3. Installation of the smoke exhaust pipe
a. Make a hole on the wall near the water heater which diameter is slightly more than the smoke
exhaust pipe outer diameter. Extend the smoke exhaust pipe outside the room and make the
outdoor part slightly tilted downward.
b. Set the air vent at higher position than the water heater.
c. Set the air intake at lower position to prevent the outdoor air from directly entering the
combustion chamber.
d. Install a windproof cover firmly.
4. Installation of Gas Pipe
a. Select qualified rubber hose or rigid pipe and gas pressure relief valve.
b. Select the dimension of the pipe refer to the „Specification’ section in this manual book.
c. The length of rubber hose cannot be more than 2 m if using liquefied petroleum gas.

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d. Install a rubber ring seal between the gas inlet and the hose connector. The rubber hose must
be connected to the red line of hose connector and must be fastened with a clamp.
e. After finishing the installation, use soapy water to check whether there is gas leak or not.
Preparation before Ignition
1. Before using the water heater for the first time, open the battery chamber and insert two pieces of
D size batteries according to the correct polarity.
2. Turn the water inlet valve to the maximum position and then turn the hot water outlet valve on to
check whether the water can flow out or not.
3. Then, turn the hot water outlet valve off and fully open the main gas valve.
Part 5: How to Use
Note:
Apply a rubber seal ring when using the metal hose.
The connectors of the water heater in the picture shown above would be in
different order for different model. Make the real object as standard during the
connection.

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Ignition/Operation
1. Ignition. After finishing the preparation, open the hot water outlet valve and the water heater will
make “pop” sound, then the hot water will immediately flow out. If the water heater cannot be
ignited at once, switch the hot water outlet valve off and restart it after 15 –20 seconds.
2. Outlet Water Temperature Controller. Turn the Flame Controller Knob to “Max” position or turn
the Water Volume Controller Knob to “High” position, the outlet water temperature will increase.
On the contrary. Rotate the flame controller knob to “Min” position or turn the water volume
controller knob to “Low” position, and then the outlet water temperature will decrease.
Discontinuing the Use
1. Turn the hot water outlet valve off, and the water heater will automatically shut down.
2. Turn the water inlet valve off.
3. Turn the gas input valve off.
Warning!
If the water heater is used again after a while, do not wash your body with the water
which comes out first. The hot water temperature inside the water heater will be
very high if the water heater is not used for a while. Let the hot water out for a few
second before applying it to your body to avoid scalding.

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Replacing Batteries
1. If the time interval of “pop” sound during the ignition quite a bit long, replace the batteries
immediately with the new ones.
2. Use sealed damp-proof iron clad batteries. Normally, batteries replacement is done every half
year.
Warning: MODENA will not be liable for any accidents caused by unauthorized dismantling of this
water heater or failure to comply the installation and operating instructions outlined in this manual.
Prevention of Gas Accident
1. Determine the type of gas. Make sure that the gas type you use is similar with the specified type
of gas in the rating label of the appliance. Do not disassemble the water heater without
authorization and use different type of gas by force.
2. Check whether the burner is extinguished after the water heater is being used and remember to
shut off the main gas valve.
3. Frequently check whether there is a gas leak at the connector or gas line. Normally, change the
rubber hose once a year.
4. For liquefied petroleum gas (LPG) users, if the flame is detected floating, the pressure relief valve
that connected to the vent of gas cylinder may fail to work properly. Stop using the current
pressure relief valve and replace it with a good one.
5. If gas leak is detected, do not ignite the water heater or turn on any electrical appliances. Open all
the doors and windows to automatically vent the gas outside the room. Turn off the water heater
and contact MODENA Call Center or the gas company.
6. It is forbidden to operate the troubled water heater. Contact MODENA Call Center once any
Part 6: Preventive Action

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failure occurs.
7. This water heater is only used for hot water supply and shower. Do not use it for any another
purposes.
Fire Prevention
1. Do not go out or go to bed while the water heater is on.
2. Do not place any flammable material near the draft hood. Do not use towel, clothes, and other
things to cover the vent.
Prevention of Carbon Monoxide Poisoning
1. A large amount of oxygen is needed when the water heater is operated. Therefore, the room
where the water heater is installed must have enough air supply and be well-ventilated. It must
also have fixed open air intake. The closed doors and windows cannot be classified as effective
air intake.
2. A large amount of exhaust gases will be generated during the water heater operation. Therefore,
the water heater must be installed with a smoke exhaust pipe to vent the exhaust gases
generated from the combustion process.
3. If the gas supply pressure is too low, there may be result in tempering that affects the normal
operation of the water heater. At this point, the flame will turn from blue to yellow and the
discharge of carbon monoxide will increase significantly. Stop using the water heater shortly.

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Other Cautions
1. Non-potable. Since there is long time stored water, the hot water generated by this water heater
is not potable.
2. During the ignition process, it is strongly forbidden to observe the ignition with eyes closely near
the observation window. The distance between the eyes and the observation window should be at
least 300 mm.
3. If the water heater will not be used for a long time, take the batteries out from its box. It is to
prevent the battery box from corrosion due to the damage of the batteries that later on can badly
affect the use of the water heater.
Treatment of Abnormlities
If the abnormalities are detected such as gas leak, abnormal combustion (tempering, flame lifting,
yellow smoke or black smoke emission), peculiar smell and abnormal sound, or other emergency
situations, immediately shut the gas valve off and contact MODENA Call Center or the gas provider
company to achieve the solution (recommended actions).

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Maintenance
1. Frequently check whether the Gas Inlet Pipe (rubber hose) is in good condition and there are no
troubles caused by aging and defectiveness. Regularly change the rubber hose and frequently
use the soapy water to identify whether there is a gas leak by checking the bubble appearance at
the pipeline connectors.
2. After being used for period of time (normally about a half year), it is necessary to check and clean
the water heater to ensure it operating normally. Frequently observe the combustion condition,
especially the flame. If the flame turns from blue to yellow and then appears black smoke, contact
the technician for cleaning and repair.
3. Regularly use soft cleaning cloth to wipe the hull (the outer body) of the water heater with clean
water or neutral detergent rather than chemical detergent or volatile solvent. Otherwise, the color
of the hull will fade away or tarnish.
4. Regularly clean the water inlet filter.
5. If the water heater will not be used for a long time, screw the drain valve off and drain the
remaining water to avoid any damage.

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Repairing Service
1. The water heater must be regularly checked and cleaned by professional technician.
2. Non-professional technician may not open the front cover of the water heater.
Packing List
Name and Illustration
Quantity
Name and Illustration
Quantity
Water Heater
1
Instruction Manual
1
10L: Plastic Plug Tapping Screw, M6
Expansion Screw
1
6L: Plastic Plug Tapping Screw
1
The following cases are not damage:
Problem
Possible Cause and Recommended Action
The ventilation releases white
smoke.
The room temperature is too low, so the exhaust gas is
condensed into white fog when meets the outdoor cold air.
Hot water output becomes
cold because of the low water
flow.
When the water flow is low (below the start-up water pressure),
the water heater will automatically shut off and the output water
become cold. Therefore, do not use the water heater if the water
flow is too low.
The water heater shuts off
suddenly after being used for
20 minutes continuously.
This water heater has timing protection function after 20 minutes
of continuous use. The flame will automatically extinguish. Turn
the hot water valve off, wait a moment, and turn it on again to re-
start the ignition.
Part 7: Troubleshooting

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Check the details below if the problems occurs
Problem
Root Causes and Corrective Actions
Water heater
cannot be
turned on.
•Gas inlet valve is closed.
Open the main gas inlet valve.
•There is air in the gas pipeline.
Switch on and off the water outlet
valve several times until the ignition
starts.
•Power is not switched on.
Switch on the power.
• Gas pressure is improper.
Contact MODENA Call Center to
check the pressure regulator valve.
•Water supply (inlet) pressure is
insufficient and the water inlet valve is
not fully opened.
Fully open the water inlet valve and
contact MODENA Call Center to
check the water pressure.
•Flue pipe is blocked and air pressure
is too high.
Contact MODENA Call Center to
remove debris and re-start the water
heater after the air pressure
becomes low.
•There is an internal failure.
Contact MODENA Call Center.
No hot water
flows out
•Water inlet valve is not fully opened
(the water heater will turn off if the
water flow is low).
Fully open the water inlet valve.
• Ignition time is too short.
Wait for a moment.
•Water pipe is too long and it will take a
moment for the hot water to flow out.
Wait for a moment.
•Gas runs out.
Add gas / replace gas container.
Water is not hot
enough
•Water flow is too high and the heating
capacity of the water heater is
insufficient.
Reduce the water flow.
•Gas inlet valve is not fully opened.
Fully open the gas inlet valve.
•Temperature setting is too low
Increase the temperature setting
•Mode is at “Flame Low–Water Flow
High".
Switch to “Flame High –Water Flow
Low".
Over-high
Water
temperature
•Water flow is too low.
Increase the water flow.
•Temperature setting is too high.
Decrease the temperature setting.
•Mode is at “Flame High –Water Flow
Low".
Switch to “Flame Low –Water Flow
High".

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MODEL
GI 0620 B
GI 1020 B
Gas Type
LPG
Rated Gas Pressure
2800Pa
Rated Thermal Load
12kW
20kW
Control Mode
Outlet Control
Exhaust Type
Flue Type
Ignition Method
Water Control Automatic Continuous Pulse
Ignition
Applicable Water Pressure
0.025~0.8MPa
Rated Hot Water Yield
Capacity (Temperature
Increase :25°C)
(6)kg/min
(10)kg/min
Connector
Specification
Gas Inlet
G 1/2
Cold Water Inlet
G 1/2
Hot Water Outlet
G 1/2
Dimension (L x W x H)
310 x 120 x 440 mm
330 x 175 x 550 mm
Net Weight
5.1 kg
8.2 kg
Smoke Vent Diameter
90 mm
110 mm
Part 9: Internal Wiring Diagram
Part 8: Specification
TT
PP
L

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