Fondital KR 55 Instrucciones de uso

IST 03 C 000 - 01

INSTALLATION

USE AND MAINTENANCE

TAHITI CONDENSING

KR 55 - KR 85

Dear Customer,

Thank you for choosing and buying one of our boilers. Please read these instructions carefully. They will enable you to install,

operate, and service the equipment properly.

Any maintenance and repair operations must be carried by one of our fully qualied and Authorized Service Centres.

General information for ﬁtters, maintenance technicians and users

This INSTRUCTION MANUAL, which is an integral and indispensable part of the product, must be handed over to the user by the

installer and must be kept in a safe place for future reference. The manual must accompany the boiler should it be sold or its possession

transferred. Following installation, the tter is to advise the user about boiler operation and the safety devices.

This boiler is designed for connection to a central heating system.

Any other use is considered incorrect and therefore dangerous.

The boiler must be installed by qualied personnel, in compliance with the applicable laws and standards and according to the manufac-

turer’s instructions given in this manual. Incorrect installation may cause injury to persons and/or animals and damage to property. The

manufacturer shall not be held liable for any such injury and/or damage.

Damage and/or injury caused by incorrect installation or use, or resulting from failure to follow the manufacturer’s instructions will relieve

the manufacturer of all contractual and extra-contractual liability.

Before installing the boiler, check that the technical data correspond to the requirements for correct use within the system.

Check that the boiler is intact and has not been damaged during transport and handling: do not install equipment which is damaged or

faulty.

Do not obstruct the air intakes.

Only original accessories supplied by the manufacturer must be used.

All the packaging materials can be recycled and should be disposed of accordingly.

Keep the packaging out of the reach of children as it can cause a hazard.

In the event of failure or faulty operation, switch off the boiler. Do not attempt to make repairs; contact a qualied technician.

Manufacturer-approved and supplied parts must be used for all repairs to the boiler.

Failure to comply with the above requirements may affect the safety of the boiler and endanger people, animals and property.

In order to guarantee efcient and correct operation of the equipment, the manufacturer recommends that the boiler be serviced and

repaired by one of its Authorized Service Centre.

Routine boiler maintenance should be performed according to the schedule in the relevant section of this manual. Appropriate boiler

maintenance ensures efcient operation, preservation of the environment, and safety for people, animals and property. Incorrect or

irregular maintenance can cause a hazard for people, animals and property.

Any maintenance and repair operations must be carried by one of our fully qualied Authorized Service Centres.

In the event of long periods of inactivity, disconnect the boiler from power mains and close the gas tap.

Warning! When power mains are disconnected, the boiler’s electronic anti-frost function will be deactivated.

Anti-freeze should be added if there is a risk of freezing. Use specic anti-freeze products suitable for multi-metal heating systems.

It is not advisable to empty the system as this may result in damage.

If you smell gas:

• do not turn on or off electric switches and do not turn on electric appliances;

• do not ignite ames and do not smoke;

• close the main gas tap;

• open doors and windows;

• contact a Service Centre, a qualied installer or the gas supply company.

Never use ames to detect gas leaks.

The boiler is designed for installation in the country indicated on the rating plate. Installation in any other country may be source of

danger for people, animals and objects.

The Manufacturer cannot be held contractually or extra-contractually liable in the event of failure to comply with the above.

TABLE OF CONTENTS

General information for ﬁtters, maintenance technician and user pag. 3

1. User instructions pag. 7

1.1. Control panel pag. 7

1.2. LCD pag. 8

1.3. Boiler status – Message display pag. 9

1.4. Operating the boiler pag. 10

1.4.1. Switching on the boiler pag. 10

1.4.2. CH function pag. 10

1.4.3. DHW function pag. 11

1.4.4. ANTI-FREEZE function pag. 12

1.4.5. PUMP ANTI-SHUTDOWN function pag. 12

1.4.6. Operation with Remote Control (optional) pag. 13

1.4.7. Operation with an external probe (optional) pag. 14

1.5. Boiler shutdown pag. 14

1.5.1. Burner shutdown pag. 15

1.5.2. Shutdown due to overheating pag. 15

1.5.3. Shutdown due to air/ue gas system malfunction pag. 15

1.5.4. Shutdown due to a water circulation malfunction pag. 15

1.5.5. Shutdown for fan malfunction pag. 16

1.5.6. Alarm due to temperature probe malfunction pag. 16

1.5.7. Alarm due to (optional) remote control connection malfunction pag. 16

1.5.8. Alarm due to (optional) external probe malfunction pag. 16

1.6. Maintenance pag. 16

1.7. Notes for the user pag. 17

2. Technical features and dimensions pag. 18

2.1. Technical features pag. 18

2.2. Dimensions of the KR 55 pag. 19

2.3. Dimensions of the KR 85 pag. 20

2.4. Main components for KR 55 pag. 21

2.4. Main components for KR 85 pag. 22

2.4. Operating data pag. 23

2.7. General characteristics pag. 24

2.8. Pumping head pag. 26

3. Instructions for the tter pag. 27

3.1. Installation standards pag. 27

3.2. Installation pag. 27

3.2.1. Packaging pag. 27

3.2.2 Choosing where to install the boiler pag. 27

3.2.3. Positioning the boiler pag. 27

3.2.4. Installing the boiler pag. 29

3.2.5. Boiler room ventilation pag. 29

3.2.6. Air intale and ue gas discharge system pag. 30

3.2.6.1. Conguration of air intake and ue gas discharge pipes pag. 31

3.2.6.2. Air intake and ue gas discharge conguration – model KR 55 pag. 32

3.2.6.3. Air intake and ue gas discharge conguration – model KR 85 pag. 33

3.2.7. Testing combustion efciency pag. 34

3.2.7.1. Chimney-sweep function pag. 34

3.2.7.2. Measurement procedure pag. 34

3.2.8. Connecting to the gas mains pag. 34

3.2.9. Plumbing connections pag. 36

3.2.10. Power mains connection pag. 36

3.2.11. Selecting the CH operating range pag. 37

3.2.12. Connecting the ambient thermostat (optional) pag. 37

3.2.13. Connecting the OpenTherm remote control (optional) pag. 37

3.2.14. Connecting to the external probe (optional) and sliding temperature operation pag. 39

3.3. Filling the system pag. 40

3.4. Starting the boiler pag. 41

3.4.1. Preliminary checks pag. 41

3.4.2. Switching on and off pag. 41

3.5. Wiring diagram pag. 42

3.6. Adapting to other gases and regulating the burner pag. 44

3.6.1. Switching from METHANE to PROPANE pag. 44

3.6.3. Regulating the burner pag. 44

4. Testing the boiler pag. 46

4.1. Preliminary checks pag. 46

4.2. Switching the boiler on and off pag. 46

5. Maintenance pag. 46

5.1. Maintenance schedule pag. 46

5.2. Combustion analysis pag. 47

6. Toubleshooting pag. 48

LIST OF FIGURES

Fig. 1 - Control panel pag. 6

Fig. 2 - LCD pag. 7

Fig. 3 - Fictitious ambient temperature regulation pag. 11

Fig. 4 – Thermoregulation curves pag. 11

Fig. 5 - Filling tap pag. 12

Fig. 6 - KR 55 Dimensions pag. 15

Fig. 7 - KR 85 Dimensions pag. 16

Fig. 8 – Main components of the KR 55 pag. 17

Fig. 9 – Main components of the KR 85 pag. 18

Fig. 10 – Head curves to the KR 55 system pag. 20

Fig. 11 – Head curves to the KR 85 system pag. 20

Fig. 12 - Installation template pag. 22

Fig. 13 - Installation examples pag. 24

Fig. 14 - Boiler casing opening pag. 27

Fig. 15 – Chimney-sweep function pag. 27

Fig. 16 - Air intake and ue gas discharge tower pag. 28

Fig. 17 - Openings for combustion efciency measurement pag. 28

Fig. 18 - Gas mains connection pag. 28

Fig. 19 - Thermoregulation trimmer pag. 32

Fig. 20 - Central heating curves with external probe operation pag. 32

Fig. 21A - Wiring diagram for KR 55 pag. 34

Fig. 21B - Wiring diagram for KR 85 pag. 35

Fig. 22 - Adaptation to other gas types for KR 55 pag. 37

Fig. 23 - Adaptation to other gas types for KR 85 pag. 37

Fig. 24 - Gas valve regulation for KR 55 pag. 37

Fig. 25 - Gas valve regulation for KR 85 pag. 37

LIST OF TABLE

Table 1 - Boiler Status-Message Display with normal operation pag. 8

Table 2 - Boiler status-Message display with malfunction pag. 8

Table 3 - Calibration data for KR 55 pag. 19

Table 4 - Calibration data for KR 85 pag. 19

Table 5 - General speciﬁcations pag. 19

Table 6 – Combustion data for KR 55 pag. 19

Table 7 – Combustion data for KR 85 pag. 19

Table 8 - Burner ignition temperatures pag. 30

Table 9 – Limit values for TSP parameters and default values for each boiler type (TSP0) pag. 31

Table 10 – Displayable TSP parameters (not modiﬁable from remote control) pag. 31

Table 11 - Relation between temperature and nominal resistance of the temperature probe pag. 36

Table 12 - CO2 rates pag. 37

1. User instructions

1.1. Control panel

1. Liquid crystal display (LCD)

The LCD displays the boiler status and operating data (Fig. 2).

2. Boiler function selector

With the selector on RESET the boiler restarts after activation of the burner shutdown device.

With the selector on OFF, the boiler is in stand-by mode, with the heating and hot water functions disabled.

With the selector on SUMMER the boiler is ready to produce domestic hot water only, provided it is connected to a separate water

heater. If the boiler is not connected to a separate water heater, this position is equivalent to ANTI-FREEZE .

With the selector on INVERNO the boiler is ready for both heating and domestic hot water production.

La preparazione dell’acqua calda sanitaria è attiva solo se la caldaia è collegata ad un sistema di preparazione dell’acqua calda sanitaria

esterno.

Hot water is only provided if the boiler is connected to a separate water heater.

With the selector on ANTI-FREEZE , only the anti-freeze function is enabled; the CH and DHW functions are disabled.

3. DHW temperature regulator

If the boiler is connected to a separate water heater, this regulator is used to switch the water heater on and off.

If the water heater has an NTC probe (10 kΩ @ ß=3435; refer to the water heater handbook), this is used to regulate the water temperate

in the range 35-65°C.

If the boiler is not connected to a separate water heater, this regulator has no effect on boiler operation.

4. CH water temperature regulator

This is used to select the temperature of the water in the heating system in the range 20-45°C or 20-78°C.

5. Water pressure gauge

This shows the pressure of the water in the heating system.

ﬁg. 1

1 2 3 4 5

1.2. LCD

a. DHW indicator

This indicator only activates if the boiler is connected to a separate water heater.

This comes on when the boiler is in DHW mode.

It ashes when the DHW temperature is being regulated via knob 3 (Fig. 1).

b. Water heater on indicator

This indicator only activates if the boiler is connected to a separate water heater.

This indicator comes on when the water heater (optional) is activated via knob 3 (Fig. 1).

c. Alphanumeric indicator

This shows the following:

- CH ow water temperature

- CH temperature setting

- DHW temperature setting (if the boiler is connected to a separate water heater).

- boiler status

- boiler diagnostics

d. Central heating indicator

This comes on when the boiler is in CH mode.

It ashes when the CH temperature is being regulated via knob 4 (Fig. 1).

e. Boiler shutdown indicator

This comes on when there is a malfunction that cannot be reset via the boiler funtion selector (2, g. 1).

The problem must be solved before the boiler can be restarted.

f. Burner shutdown indicator

This comes on when the burner shutdown device activates due to a malfunction.

To restart the boiler, turn the boiler selector (2, Fig. 1) to the RESET position for a few seconds and then back to the desired position.

g. Flame indicator

This comes on when the burner ame is present.

h. Chimney-sweep function indicator (for ﬁtter only)

This ashes when the chimney-sweep function is activated.

The ow water temperature and the number of fan revs are shown alternatively (in this case, symbol m is also shown).

i. Thermoregulation indicator (for ﬁtter only)

This comes on when the thermoregulation curve is set.

l. Fictitious ambient temperature indicator

When an external probe is installed, this indicator ashes when the ctitious ambient temperature is set via knob 4.

m. Number of fan revs (for ﬁtter only)

When the chimney-sweep function is activated, symbol h ashes and ow water temperature and number of fan revs are shown

alternatively (in this case, the correspondent symbol is also shown).

ﬁg. 2

a b c d

f g h i l

1.3. Boiler status – Message display

Normal operation

Boiler selector on OFF

Boiler selector on ANTI-FREEZE

Boiler selector on SUMMER or WINTER

No function active

The ﬂow water temperature is displayed

Boiler selector on SUMMER or WINTER

DHW system enabled (*)

The ﬂow water temperature is displayed

Boiler selector on WINTER

CH function active

The ﬂow water temperature is displayed

Boiler selector on SUMMER or WINTER

Water heater enabled, no function active (*)

The ﬂow water temperature is displayed

Table 1 – Boiler Status-Message Display with normal operation

(*) If the boiler is connected to a separate water heater.

Malfunction

Boiler not powered on

Boiler shutdown due to ﬂame absence

Boiler shutdown due to safety thermostat activation

Boiler shutdown due to ﬂue gas thermostat activation

CH probe failure

Water heater probe fault

Only if the boiler is connected to a separate water heater (optional) with an NTC probe

(10 kΩ @ ß=3435; refer to the water heater handbook).

Low primary ﬂuid circulation alarm

(pump ON – ﬂow switch OPEN)

Allarme circolazione ﬂuido primario insufﬁciente

(pompa OFF – ﬂussostato CLOSE)

Low primary ﬂuid circulation alarm (pump OFF – ﬂow switch CLOSED)

Remote control connection failure

External probe failure

Table 2 - Boiler status-Message display with malfunction

1.4. Operating the boiler

1.4.1. Switching on the boiler

The following procedure is to be implemented only after the boiler is installed and tested by a qualified fitter.

- Open the gas stop cock.

- Turn ON the master switch external to the boiler; the LCD shows and indicates the active function (see Table 1).

- Select boiler operation mode via selector 2 (Fig. 1): OFF/SUMMER/WINTER/ANTI-FREEZE.

- Set the desired CH temperature (§ 1.4.2.).

- If the boiler is connected to a separate water heater, set the desired DHW temperature (§ 1.4.3.).

- Set the desired ambient temperature by means of the ambient thermostat in the premises (optional).

IMPORTANT

When starting up the boiler for the ﬁrst time or it has not been used for a long period of time, particularly when it is propane-

ﬁred, ignition may be difﬁcult and the boiler may shut down a few times.

Resume boiler operation by turning selector 2 (Fig. 1) to the reset position for a few seconds then back to the desired position.

If the boiler still does not ignite after several attempts, it needs to be serviced by an Authorised Service Centre or a qualiﬁed

service engineer.

1.4.2. CH function

Set the desired CH water temperature on knob 4 (Fig. 1).

The CH water temperature range depends on the selected operating range:

- standard range: from 20°C to 78°C (from full anticlockwise to full clockwise position).

- reduced range: from 20°C to 45°C (from full anticlockwise to full clockwise position).

The temperature range must be set by the tter or an Authorized Service Centre (§ 3.2.11. 9).

During temperature setting, the CH symbol on the LCD ashes and the CH setting is displayed.

When the CH system requests heat, the LCD shows the (stable) CH symbol and the CH water tempe-

rature.

When the CH system requests heat, the LCD shows the (stable) CH symbol and the CH water temperature.

The burner symbol only shows when the burner is in operation.

To prevent the boiler from switching on and off frequently in CH mode, it is programmed with a delay time

between subsequent ignitions, which depends on the selected operating range:

- standard range: 4 minutes;

- reduced range: 2 minutes.

Should the water temperature in the system fall below the default value (§ 3.2.11.), the delay time is zeroed and the boiler re-ignited.

1.4.3. DHW function

Domestic hot water function is only enabled if connected to a separate water heater (optional).

The DHW function always has priority over the CH function.

Enabling/disabling the water heater

Il bollitore esterno (optional) può essere abilitato o disabilitato alla produzione di acqua calda sanitaria tramite il regolatore 3.

The separate water heater (optional) can be enabled or disabled via knob 3.

If the water heater active symbol is not displayed, turn knob 3 fully anticlockwise and the symbol will appear.

Then turn it clockwise until a temperature of at least 40°C is displayed. To disable the water heater, turn knob 3 fully anticlockwise until

the symbol disappears and then clockwise until a temperature of at least 40°C is displayed.

When you turn knob 3, the DHW symbol ashes on the display.

Regulating the DHW temperature

If the water heater has an NTC probe (10 kΩ @ β=3435; refer to the water heater handbook), the temperature setting range is 35-65°C

(from the fully anticlockwise to the fully clockwise position on knob 3). During temperature setting, the

DHW symbol ashes on the display and the DHW temperature setting is displayed.

It is advisable to set a temperature of at least 40°C to allow the system to operate efﬁciently.

If the water heater has a thermostat probe, the DHW temperature must be set on the water heater (refer to water heater handbook). Knob

3 has no effect on this conguration, except to enable/disable the water heater as described above.

With the water heater enabled, it is always advisable to set knob 3 to at least 40°C.

When the DHW system requests water, the LCD shows the DHW symbol (stable) and the instant CH water temperature.

The burner symbol only shows when the burner is in operation.

1.4.4. ANTI-FREEZE function

The boiler is tted with an anti-freeze protection system, which works when the following functions are

enabled: SUMMER, WINTER and ANTI-FREEZE.

When the CH temperature sensor measures 5°C, the boiler switches on and stays at the minimum heat output until it reaches 30°C or 15

minutes have elapsed. The pump continues to operate even if the boiler shuts down.

Anti-freeze function protects the boiler only, not the entire CH system. The CH system must be protected by other

methods, depending on the type of installation.

The CH system can be protected effectively against freezing by means of specic anti-freeze additives suitable for use in multi-metal

systems.

It is important to check the effectiveness of the anti-freeze product periodically.

Do not use car engine anti-freeze products.

If the boiler is connected to a separate water heater with an NTC probe (10 kΩ @ β=3435; refer to the water heater handbook), when the

probe measures a temperature of 5°C in the water heater, the boiler switches on and stays at the minimum heat output until it reaches

10°C or 15 minutes have elapsed. The pump continues to operate even if the boiler shuts down.

If the boiler is connected to a separate water heater with a thermostat, the anti-freeze function does not protect the water heater. In this

case, to protect the water heater, you need to turn knob 3 on the boiler to WINTER and set a DHW water temperature on the water hea-

ter higher than 0 °C.

If the boiler shuts down, the heater is not protected against freezing.

1.4.5. PUMP ANTI-SHUTDOWN function

If:

- the boiler remains inactive,

- selector 2 (Fig. 1) is NOT in the OFF position, or

- the boiler is still connected to the mains supply,

the pump activates briey every 24 hours to keep it efcient.

1.4.6. Operation with Remote Control (optional)

The boiler can be connected to an (optional) remote control, which can be used for setting numerous parameters, including:

- boiler status

- ambient temperature

- CH water temperature

- DHW water temperature

- CH water temperature (only if connected to a separate water heater (optional) with an NTC temperature probe 10 kΩ @ ß=3435);

- switching on times for the CH system and water heater;

- boiler diagnostics display

- boiler reset

For instructions on how to connect the remote control, refer to § 3.2.13.

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