Ferroli Zefiro C11, Zefiro C14, ZEFIRO-11, ZEFIRO-14 User Manual

EN

ZEFIRO

2

Thank you for purchasing this product.
The FERROLI instantaneous gas water heater you have chosen was designed and manufactured by our specialists
and controlled in every stage according to the strictest quality standards, to meet your needs.
To ensure best use of your new FERROLI instantaneous gas water heater, please read these instructions carefully.

CONTENTS

DESCRIPTION, EQUIPMENT LEVELS.................................................................................................. 3

USER INSTRUCTIONS .............................................................................................................. ................5

ELECTRONIC WATER HEATER ...................................................................................................................... 5

CONTROL PANEL.................................................................................................................. .................... 6

INSTALLER INSTRUCTIONS......................................................................................................... .........6

PLACE OF INSTALLATION...............................................................................................................................6

GAS AND WATER CONNECTIONS .................................................................................................................6

WALL MOUNTING............................................................................................................................................. 7

MAIN DIMENSIONS ..........................................................................................................................................7

FLUE GAS EXHAUST .......................................................................................................................................8

EXTERNAL CASING ASSEMBLY..................................................................................................................... 8

CHECK AND DELIVERY ................................................................................................................................... 8

FUME EXHAUST SAFETY DEVICE ................................................................................................................ 8

TECHNICAL DATA ............................................................................................................................................ 9

SERVICE AND MAINTENANCE........................................................................................................ ....10

CONVERSION..................................................................................................................... ...................... 10

WIRING DIAGRAM ................................................................................................................. ................11

EN

ZEFIRO

3

'(6&5,37,21(48,30(17/(9(/6

The FERROLI water heater has been designed and built to offer the convenience (with correct use) of hot water. The
unit consists of the following elements (see attached table).

1. Incorporated draught diverter: Ensures correct combustion, even when the draught changes
in the flue.

2. Heat exchanger: In pure electrolytic copper with thermal covering that ensures
maximum transmission of heat to the water.

3. Multigas burner: high technology that fully exploits the gas consumed. Conversion
to another type of gas is possible by changing the nozzles and regulator pin.

5. Ignition safety valve: Equipped with an electric system allowing the
gas to come out the burners only in safe conditions - presence of flame.

6. Power adjustment knob: for manually setting the required power.

7. Temperature selector: for setting the required hot water temperature.

9. Hydraulic device: Automatically activates the water heating mechanisms

when a hot water tap is opened. It is also a SAFETY
SYSTEM, since it opens the gas flow to the burner only when water is circulating in the
exchanger.

14. Electronic ionisation probe: For detecting the presence of flame

15. Burner ignition electrode

16. Temperature limiting thermostat.

17. Ignition microswitch.

18. Flue gas control device. Turns the water heater off in case of insufficient draught or the

presence of obstructions in the fume exhaust.

19. Battery box.

20. Hydraulic drain valve.

21. Electronic control module.

EN

ZEFIRO

4

5

B D C L A4 M

Zefiro C11 560 550 170 328 Ψ 110 170
Zefiro C14 660 650 220 400 Ψ 130 220

1 = Hot water outlet: R 1/2".
2 = Gas inlet: R 1/2".
3 = Cold water inlet: R 1/2".

EN

ZEFIRO

5

86(5,16758&7,216

ELECTRONIC WATER HEATER

-Preliminary checks

1. Make sure the hot water taps are closed.

2. Open the water heater gas cock, located on the gas connection to the unit.

3. Make sure the 1.5 V batteries are in place, with the correct polarity (+ and -), and that the safety seal has
been removed.

4. Also, make sure the batteries are sufficiently charged for water heater operation.

-Manual setting of burner power

With the power adjustment knob it is possible to select the water heater power, minimum (-) or maximum (+), and
intermediate positions according to the required water heating level; by turning the knob to +, the unit heats the water
at max. power. If the temperature is too high, for example in summer, or when a reduced delivery of not very hot
water is required, turn the knob to -, thereby almost halving the power (and gas consumption). In the position z the
unit is deactivated.

-Temperature setting

The water temperature can be easily set with the temperature selector: turn it to the right to increase the
temperature, or left to decrease the temperature.

-Hot water delivery

− After making the above adjustments, the water heater is ready to operate in a completely automatic way. On

opening a hot water tap an intermittent discharge is generated on the ignition electrode, causing the burner to
light.

− All the electronic models have an ionisation probe inserted in the burner for controlling correct flame presence.

In case of no gas or anomalies with the burner going out, the control system attempts automatic relighting. The
water heater stops if the flame does not light after a few seconds.

− Therefore it is necessary to eliminate the cause or the element preventing the gas from reaching the water

heater, e.g. inadvertent closing of the gas cock, gas bottle finished, etc.

− The water heater shutdown is deactivated by opening or closing the hot water tap.

− Repeat the operation if hot water delivery is not restored after eliminating the cause and opening the hot water

tap. If the fault persists, contact the After-Sales Technical Service.

− The presence of flame in the burner can be seen in the special window.

-Water heater shutdown

The burner goes out automatically when the domestic hot water demand ceases.
No particular steps are necessary to carry out another lighting stage.
To completely shut down the unit, turn the knob to z .

In case of prolonged shutdown, close the gas cock ahead of the unit.

PREVENTIVE MEASURES

-Against scaling

In places with hard water, scaling builds up on the walls of the recipient containing it, making the transmission of heat
more difficult. To save energy and prolong the service life of the unit, it is advisable to set the water temperature like
that of use, selecting it with the selector knob.

-Against freezing

If the water heater is installed in a cold place, the water could freeze inside and damage it. To prevent this, in case of
imminent frost (e.g. at night):

1. Close the water cock at the water heater inlet.

2. Open a hot water tap located at a lower level (e.g. bidet).

3. Release the water heater drain valve, so that air can enter the unit and water can come out. The drain valve is
located at the bottom of the water heater. It is easily accessed without removing the casing.

-Safeguarding the environment

Used batteries must be placed in the appropriate containers.