Protherm Lion 24 kkv Quick start guide

Operation and

Installation Guide

24 KKV

28 KKV

28 KKO

Wall-mounted condensing boiler

Output range 5 - 27,9 kW / 5,7 - 31,7 kW

Hot water heating (24 / 28 KKV)

Lion

xxxxxxxxxx_00- v.1 7/2007

version

Table of contents

Introduction ........................................... 2

OPERATING INSTRUCTIONS

Controls and signals ............................. 4

Control panel......................................... 4

Selecting Read mode............................ 5

Selecting Setup mode .......................... 5

Error codes and troubleshooting .......... 6

Boiler control scheme ........................... 7

Starting the boiler and turning it off ...... 8

Boiler control ........................................ 8

Protective functions .............................. 9

Service and maintenance .................. 10

Warranty and warranty conditions ...... 11

Technical parameters ......................... 12

Boiler connection dimensions ............. 15

Usable gauge pressure to the system.15

Function schematic diagram .............. 16

INSTALLATION INSTRUCTIONS

Introduction ........................................ 18

Completeness of delivery ................... 20

Preparing for installation .................... 22

Installing the boiler ............................. 24

Air supply and ﬂue gases removal ...... 28

Components of concentric

Ø 60/100 ﬂue gas removal .................. 32

Components of concentric

Ø 80/125 ﬂue gas removal .................. 33

Components of separate

Ø 80 / 80 ............................................. 36

Electrical wiring ................................... 40

Interconnecting boiler with

hot water tank...................................... 42

Conversion to other fuel ...................... 42

Boiler electric wiring diagram ............. 43

Protherm Lion 24 KKV, 28 KKV, 28 KKO

The boiler Serial No. is shown on the plate which is attached to the back of the electrical

cabinet of control panel. The control panel is situated on the front face of the boiler.

In section “Operating Instructions” you will ﬁnd description of the boiler’s main functions

and guidelines how to handle the boiler safely. Section “Installation Instructions” is for

competent workers only.

Dear customer,

you have become the owner of a Protherm

Lion wall-mounted condensing boiler,

designed to run on natural gas.

Please note: The boiler can be also run on

propane, too, provided the requirements

detailed in this Operation and Installation

Guide are met.

Lion 24 KKV and 28 KKV are boilers with

forced exhaust of combustion gases,

intended for heating of heating water

(HeW) in central heating systems and for

heating domestic hot water (HoW) in a

ﬂow-through method. Lion 28 KKO in its

basic version is intended only for heating of

heating water in central heating systems.

Using a kit available for this purpose, Lion

28 KKO can be extended to heat also hot

water in an external tank.

WetrustthattheProthermLion condensing

boiler will give you a long and satisfactory

service. However, in order to achieve

this, all conditions important for its safe

operation must be met. Therefore please

study this Guide carefully and respect all

principles stated therein.

1.When installing and using the boiler,

follow all manufacturer’s instructions and

warnings in this Guide.

2.The boiler and all associated equipment

must be installed and used in accordance

with design, all applicable valid laws,

regulations and technical speciﬁcations

and Operation Guide for the product.

3.Call a service technician authorised by

the manufacturer to install, convert and

set up the boiler.

4.Only a service organisation authorised

by the manufacturer may put the boiler

into operation following the installation.

5.The boiler complies with regulations

applicable in the Slovak Republic. When

used in the conditions of other countries,

any deviations from local regulations

must be identiﬁed and rectiﬁed.

6.In the event of a defect, call a

manufacturer’s service organisation –

any unauthorised interference may

damage the boiler (and possibly also

associated equipment!).

7.The authorised service technician who

puts the boiler into service for the ﬁrst

time must show the user the boiler’s

functions, its different parts, safety

functions and controls. He must also give

the user a User’s Guide and explain

anything unclear in it to him.

8.Check completeness and integrity of

delivery.

9.Check whether the model and type

supplied is suitable for the required use.

10. Whenever you are not certain how to

control the boiler, study appropriate

instructions in this Operation and

Installation Guide carefully and proceed

accordingly.

11. Never remove or damage any markings

and signs on the boiler.

12. When making any repairs, only original

parts must always be used. It is forbidden

to make any changes to the boiler’s

internal installation, or to interfere with it

in any way.

13. When shutting the boiler down for a

protracted period of time, we recommend

to shut the gas supply, heating water and

hot water off and disconnect the boiler

from power supply.This recommendation

applies in conjunction with the general

conditions stipulated in this Operation

and Installation Guide.

14. Handle the boiler and its part upon the

end of its service life in compliance with

environmental requirements.

15. The manufacturer disclaims any

responsibility for damages caused by

the failure to abide by:

• the conditions stipulated in this Operation

and Installation Guide;

• applicable regulations and standards;

• proper installation and operation

procedures; and

Introduction

• conditions stated in the Warranty

Certiﬁcate and the Service Book.

Safety of equipment and people

• According to the ﬁndings of SZÚ Brno,

the boiler complies with the requirements

of European directive for appliances

European directive on efﬁciency 92/42/

EHS, European directive on electrical

appliances used within certain voltage

ranges 2006/95/EC and European

directive on electromagneticcompatibility

89/336/ EHS.

• In addition, the appliance has been

approved according to European

standards EN 297, EN 483, EN 677, EN

625, EN 60335-01, EN 50165, EN

55014, EN 61000-3-2 and EN 61000-3-

• In order to run and operate the boiler in

accordance with the purpose for which it

is designed in actual conditions of use

(hereafter referred to only as use), it is

necessary to abide also by additional

requirements – the most essential ones

of which (i.e. those which must not be

omitted) are found in the following

regulatory documents:

- in the design area: STN 06 0310 and

STN 06 0830;

- in the ﬁre safety area: STN 92 0300;

- for installation and assembly (and

repairs): STN EN 1775 or STN 38 6460

and/or STN 38 6462, Public Notice No.

48/1982 (as amended) and binding

occupational safety and health

regulations;

- during running and operation: STN 38

6405.

- in the area of combustion gases removal,

it is STN EN 483, vendor’s material –

“Catalogue of dual tubing for exhaust of

combustion gases and supply of

combustion air, intended for Type C gas

appliances, i.e. in closed execution, the

so called “TURBO”.

• In addition to the above mentioned

documents, it is necessary when using

the boiler to proceed in accordance with

this Operation and Installation Guide

and the accompanying boiler

manufacturer’s documentation. Any

interference by children, persons under

the inﬂuence of narcotic drugs, certiﬁed

persons, etc., when using the boiler,

must be prevented.

Situations might occur in practice, when

the following essential measures must be

adopted:

• prevent the boilerfrom(evenaccidentally)

being turned on while conducting

inspections or working on the combustion

gasses ﬂue route or gas and water

distribution pipes, by disconnecting the

boiler from power supply also by other

means than merely turning the main

switch off (e.g. by pulling the power cord

plug out of power socket);

• shut the boiler down every time when

there are any (even temporary)

ﬂammable or explosive fumes present

on the premises from which combustion

air is supplied to the boiler (e.g. from

paint when painting, laying and spraying

molten substances, from gas leaks,

etc.);

• if it is necessary to drain water from the

boiler or from the whole system, the

water must not be dangerously hot;

• when water is leaking from the boiler’s

heat exchanger or when the exchanger

is clogged up with ice, do not attempt to

start up the boiler until normal operating

conditions have been restored;

• when gas leak has been detected or gas

supply has been interrupted, or if it is

suspected that this has happened, shut

the boiler down, turn the gas supply off

and call the gas supply company or a

service organisation.

Operating instructions

Controls and signals

Main switch

The main switch (Fig. 1, pos. 1) is used to

switch the boiler on or off, or to shut the

boiler down. The main switch is situated

in the bottom half of the boiler’s control

panel.

Please note: The boiler must be put into

operation and switched on for the ﬁrst time

by an authorised service organisation.

Control panel

On the boiler’s control panel you can

monitor instantaneous values and set the

required parameters.

Description of control elements (Fig.1):

Fig. 1

23456

91110

2.Heating water LED - indicates display

mode or setting of heating water

temperature.

3.Hot water LED – indicates display mode

or setting of hot water temperature.

4.Heating water pressure LED - indicates

display of pressure.

5.Indicates boiler defect.

6.Flame indicator LED – it lights up when

burner ﬂame is on.

7.MODE button – switching to different

modes of reading or setting of values.

8.Button (+) – used to increase the value

of the parameter being set.

9.RESET button - used to unblock a

defect.

10.Display to show pressure, temperature,

service parameters and error codes.

Selecting Read mode

11.Button (-) – used to reduce the value of

the parameter being set.

Selecting Setup mode

Setting hot water temperature

Press and keep

depressed the

MODE button for

2 seconds and

then press the

MODE button

repeatedly until the LED under the symbol

starts ﬂashing. Using the „+“ and „-“

buttons set the hot water temperature to the

required value. Setting range is --, 37 to

63°C (in 1°C steps). If you select (--), the

boiler will heat only heating water.

In the KKO model with an external hot water

tank it is possible to set the required hot

water temperature in the tank only if an NTC

sensor is installed.

Setting heating water temperature

Press and keep

depressed the

MODE button for 2

seconds and then

press the MODE

button repeatedly

until the LED

under the symbol starts ﬂashing. Using

the „+“ and „-“ buttons set the heating

water temperature to the required value.

Setting range is --, 38 to 82°C (in 1°C

steps). If you select (--), the boiler will heat

only hot water, i.e. it will be working in the

so called summer mode.

Displaying heating water

temperature

After turning the

boiler on with the

main switch, the

current heating

water temperature

will appear on the

display. LED under the symbol lights

up.

Indicating “hot water tap open”

During hot water

tap open, the

display shows

the required

temperature of

hot water. If the

boiler is coupled with an external hot

water tank with an NTC sensor, then when

hot water is running, the current hot water

temperature inside the tank is displayed

on the screen (after pressing the MODE

button). This is indicated by lighting of

LED at symbol .

Displaying heating water pressure

Pressing and

holdingdepressed

the MODE button

willdisplayheating

water pressure

in the system for

about 30 s. The

LED under the symbol lights up

Warning “heating water pressure

too low”

When the heating

water pressure

drops below 0.6

bar or it rises

above 2.8 bar,

the heating water

pressure appears on the display. The LED

under the symbol ﬂushes. The boiler

is still functional, the pressure must be

adjusted to the recommended value 1,2

- 2 bar. When the heating water pressure

drops below 0,3 bar, the boiler shuts itself

down.

Function hot water COMFORT

Press and keep

depressed the

MODE button for

2 seconds and

then press the

MODE button

repeatedly until the parameter P0 or P1

Error codes and troubleshooting

Error codes

If a fault is detected, the fault symbol and

the error code will appear on the screen

in turns.

and error code

The fault is also indicated by lighting up

the LED under the symbol .

Boiler overheated – F.20

The boiler has

overheated and is

automatically shut

down, waiting for

the temperature

to drop. When the

temperaturedrops

down to operating temperature, the boiler

will restart itself. If the F.20 error code

reappears, call an authorised service.

Not enough water – F.22

There is not

enough water

in the heating

system.The boiler

is automatically

shut down. Top

up water in the

heating circuit (page 10 – Topping up

water in the heating system). and then

press the RESET button. If the error code

reappears, call an authorised service.

Faulty ignition – F.28

When starting the

boiler, the burner

failed to ignite.

Check the gas

shutting valve

underneath the

boiler and press the RESET button. If the

fault persists, call an authorised service.

Please note: The boiler will make ﬁve

attempts to light itself up and if it fails, fault

F.28 will appear on the display.

Need for annual service inspection.

When this

messageappears,

it is necessary to

call an authorised

service and ask

them to carry out

an “annual” preventative inspection. This

type of message is not factory enabled.

The function can be enabled on request

by an authorised service, which will set

a service interval. The service interval is

counted in hours, counting the time when

the boiler’s burner is on.

Please note: That a preventative “annual”

inspection has been carried out is

indicated by displaying “SE” with one of

the standard parameters appended (e.g.

heating water temperature in the boiler).

appears on the display. Using the „+“ and

„-“ buttons select the required COMFORT

mode (preheat) parameter. Setting range

P0 – OFF, P1 – ON.

Please note: The COMFORT function

ensures a permanent pre-heating of hot

water in the exchanger, shortening the time

before hot water of required temperature

starts running out of the tap.

Fig. 2

Schematic diagram – boiler controls

Recommended pressure

1,2 - 2 bar .

When pressure drops below

0,3 bar, the boiler is shut down

LED is flashing

Setting range

35 - 87 °C

Setting interval 1°C

- OFF/SUMMER

mode

Proceed according to instructions

Setting range

37 - 63 °C P1 = ON

Using buttons (+) or (-)

select P1 or P0

P0 = OFF

- OFF

Start

HeW

temperature

Water

pressure

Setting heating water

temperature

Setting hot water

temperature

COMFORT hot water

heating mode

Warning – heating water

pressure too low

Error code displayed “Service required” message

By pressing RESET, try to

restart the boiler. If the

problem persists, call

authorised service

Service required message is

displayed when the set service

interval is up. This function must

be enabled by a service

technician

LED is flashing

Setting interval 1°C

Other error codes

If other error codes appear on the display,

try to restart the boiler by pressing the

RESET button. If the fault persists, call an

authorised service.

Starting the boiler up

Important: Putting the boiler into operati-

on and starting it up for the ﬁrst time must

be done by an authorised service only!

If you wish to start the boiler after it has

been put into operation, make sure that:

1.the boiler is connected to power supply;

2.all valves underneath the boiler (hot

water, heating water, gas) are opened;

3.the heating water pressure is within the

recommended range 1,2 – 2 bar.

Turn the main switch (Fig. 1, pos. 1) ON.

A few moments later the heating water

temperature will appear on the display and

the LED under the symbol will light up

(Fig. 1, pos. 2). When the burner ignites,

the LED under the symbol will light up

(Fig.1, pos. 6).

In the event of an emergency boiler

shutdown, a fault indicating red LED will

light up on the control panel (Fig. 1,

Position 5) and an error message code

will appear on the boiler’s display. Unblock

the boiler by pressing the RESET button

(Fig.1, Position 9). If the emergency

shutdown recurs after a short time again,

or if the boiler cannot be RESET, call an

authorised service organisation.

Turning the boiler off

Turn the main switch (Fig. 1, pos. 1) off.

If the boiler is to remain shut down for a

protracted period of time, shut all valves

underneath the boiler off (HeW, HoW, gas).

When shutting the boiler down, take into

consideration the ambient temperature in

the given season. If there is a danger that

the boiler may freeze, drain the water from

the boiler, the heating system and the hot

water pipes.

Starting the boiler up and turning it off

Boiler control

Using the boiler without room

control unit

When run in this mode, the boiler maintains

theset heatingwatertemperature.No room

control unit is connected, the terminals for

its connection must be interconnected

with a jumper (standard factory setting).

Setting procedure:

• turn the main switch ON;

• set the heating water temperature to the

required value on the control panel.

Using the boiler with room control

unit

The boiler maintains the set heating

water temperature. The room control

unit connection terminal jumper must be

removed and the room control unit wired

to the terminals. The boiler is turned on

and off to maintained the set temperature

in the room in which the control unit is

installed. Radiators in this room must not

be equipped with thermostatic valves.

Important: You must set on the boiler

control panel a heating water temperature

(temperature of the water in the system)

which will be capable of covering thermal

losses of the building even in low outdoor

temperatures.

Please note: Use only control units

recommended and sold by PROTHERM

which are designed and tested for the

particular type of boiler. If you use a

different unit, we cannot guarantee the

boiler’s correct and full functioning.

Using the boiler with equithermal

control

The boiler changes the heating water

temperature as the outdoor temperature

changes.

When this type of control is used, it is

necessary to install a control unit which

has the equithermal control function,

Protherm Thermolink B or Thermolink P.

In addition, it is necessary to install an

outdoor temperature sensor.

Protection against freezing

The boiler has an antifreeze protection

system which protects the boiler (but not

the heating and the hot water distribution

systems) against freezing.

When the heating water temperature

inside the boiler drops to 8°C, the pump

is switched on, regardless of signal

from room control unit and summer-

mode setting. When the heating water

temperature inside the boiler reaches

10°C, the pump is automatically switched

off. If the heating water temperature inside

the boiler continues to drop, at 5°C the

boiler lights itself up and heats the heating

water to 35°C.

Important: When the frost protection

function is enabled, the three-way valve

switches to the middle position and both

heating water and hot water start to be

heated.

Protection of hot water tank against

freezing

When the temperature in hot water tank

drops to 10°C, the boiler heats the tank to

15°C. The function is enabled only when

the external hot water tank with an NTC

sensor is connected.

Protective functions

Pump protection

When the pump has been continuously

idle for 23 hours, it is automatically

switched on for about 20 seconds, to

prevent it from ceasing or clogging due to

protracted inactivity.

The boiler is also equipped with a clogging

protection system.

Important: This boiler function cannot be

disabled.

Two-speed pump

Two-speed pump with automatical

switching of the speed is mouted in the

boiler. When boiler warm heating water,

pump is runing according to setup of the

parameter on control board. When boiler

warm hot water, pump is runing for higher

speed.

Please note: Pump runing parameter

may be seting up only by an authorised

technician.

Pump run-down

Pump run-down is factory set to 30

seconds for heating of hot water. When

heating a heating water, the run-down is

set to 3 minutes. The maximum run-down

can be set to 60 minutes.

Important: Room control unit and outdoor

sensor must be installed by an authorised

service only.

Setting the boiler output

The boiler is factory-set to its maximum

output. If necessary, the boiler heating

water output can be adjusted as required

(in view of the boiler’s features).

Important: Output setting may be chan-

ged only by an authorised technician.

Important: This boiler function is enabled

only when boiler is connected to electrical

mains.

Anti-cycling

The boiler features an anti-cycling function.

The control board calculate automatically

the delay of the next start up of boiler

depending on boiler conditions.

Disconnecting the boiler from power

supply

Disconnect the boiler from power supply

only before service or when the boiler is

to be shut down for a protracted time (see

Chapter “Switching the boiler off” on page

8). When the boiler is disconnected from

power supply, all protection functions are

disabled.

Power failure

Power failure will turn the boiler off. When

power supply is restored, the boiler will

automatically restart itself without losing

any of the set operating parameters.

If after power supply restoration the red

LED on the control panel (Fig. 1, pos. 5)

lights up, proceed in accordance with the

Toping up water in the heating

system

Water in the heating system (in small

quantities) can be topped up through the

boiler’s top-up valve (Fig. 3).

When topping up water in the system, the

following conditions must be met:

1.Pressure of the water supplied to the

boiler must be always higher than the

water pressure inside the heating

system.

instructions in section Starting the boiler

and turning if off.

Please note: The boiler may get blocked

because of overheating caused by the

pump being switched off as a result of the

power failure. This fault can be ﬁxed by

pressing the RESET button on the boiler’s

control panel. If the fault persists, call an

authorised service.

Safety valve

The boiler is equipped with a safety valve

which opens when the pressure in the

heating system reaches 3 bar. DO NOT

TOUCH THE SAFETY VALVE! If the

safety valve starts releasing heating water,

always turn the boiler off, disconnect it

from power supply and call an authorised

service organisation. If the heating system

repeatedly looses pressure, consult your

service organisation.

Important: All the above-mentioned

electronic protection functions are

enabled only when the boiler is connected

to power supply (the power cord plug is

inserted into a power socket and the main

switch in the ON position (I).

Service and maintenance

2.The boiler must be cold (water

temperature must not exceed 30˚C).

3.Recommended water pressure inside

the cold boiler (not more than 30˚C) is

1,2 to 2 bar.

Fig. 3

Water top-up system

Warranty and warranty conditions

PROTHERM Lion gas boilers are covered

by warranty deﬁned in the Warranty Certi-

ﬁcate, the Service Book and other conditi-

Important: If the water mains pressure

were lower or equal to the water pressure

inside the heating system, the heating

water may run into the water mains, which

is forbidden. This danger is reduced by a

built-in reverse valve installed downstream

the top-up valve.

This notwithstanding, the manufacturer

disclaims responsibility for any damages

caused by incorrect manipulation with

the top-up valve and a failure to abide

by the conditions speciﬁed above. Such

damages and defects are not covered by

the boiler’s warranty.

Procedure of topping up heating water to

the boiler:

• make sure that the boiler is connected to

power supply and the main switch is in

the ON position;

• when the heating water pressure showed

on the display is below 0.6 bar, the red

LED next to the symbol on the boiler’s

control panel ﬂashes (Fig. 1, Position 4)

and the display shows current heating

water pressure.

• partially open the top-up valve (Fig. 3).

Watch the pressure grow on the boiler’s

display panel;

• ﬁll the system up until the pressure

reaches the value between 1.2 and 2

bar;

• when the required pressure has been

reached, tighten the top-up valves with

your hand;

• thoroughly bleed all radiators (the water

must be running out in a continuous

stream, free of air bubbles);

• check whether the pressure shown on

the display is within 1.2 and 2 bar. If

necessary, add more water into the

system.

Cleaning

The boiler cover can be cleaned with

a moist cloth and afterwards dried and

polished with a dry cloth. Never use

abrasive detergents or solvents.

Important: before cleaning the boiler, turn

it off with the main switch.

Regular service

To assure trouble-free and safe running of

your boiler, we recommend that you have

the boiler checked and serviced in regular

yearly intervals. These inspections are

not covered by the boiler’s warranty. The

operations to be done are speciﬁed in the

Service Book and must be carried out by

an authorised service.

ons speciﬁed in the Operation Guide and

Installation Guide (chapters Introduction

and Boiler installation).

Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II2H3P

Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B23, B33, B53, C13, C33, C43, C53, C83

Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electronic

Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G20 . . . . . . . . . .G31

Max./min. thermal input. . . . . . . . . . . . . . . . . . . . . . . . . [kW]. . . . .25,6 / 4,5 . . . . . .25,5 / 4,5

Max./min. thermal output at temperature drop 80 / 60 °C[kW] . . . .25,0 / 4,2 . . . . . .24,8 / 4,2

Max./min. thermal output at temperature drop 50 / 30 °C[kW] . . . .27,9 / 5,0 . . . . . .26,8 / 4,7

Efficiency at temperature drop 80 / 60 °C. . . . . . . . . . . . [%] . . . . . . .98,1 . . . . . . . . . .97,1

Efficiency at temperature drop 50 / 30 °C. . . . . . . . . . . . [%] . . . . . . . 105 . . . . . . . . . 101,7

Gas consumption (Q max.). . . . . . . . . . . . . . . . . . . . . . [m3/h] . . . . . 2,7 . . . . . . . . . .1,04

Gas consumption (Q min.) . . . . . . . . . . . . . . . . . . . . . . [m3/h] . . . . .0,48 . . . . . . . . . .0,18

Gas pressure

Supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[mbar] . . . . . . 20 . . . . . . . . . . . 37

Heating

Max. operating pressure . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 3

Min. operating pressure . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . .0,6

Recommended operating pressure. . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . 1,2 – 2

Thermal range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[°C] . . . . . . . . . . . . 35 – 87

Expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[l]. . . . . . . . . . . . . . . 10

Boiler water volume (heating water volume) . . . . . . . . . . .[l]. . . . . . . . . . . . . . .2,7

Max. pressure in expansion vessel . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 3

Domestic hot water (HW)

Max. supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 6

Min. supply pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . .0,5

Min. flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [l/min] . . . . . . . . . . . . .1,5

Adjustable thermal range (depending on flow) . . . . . . . .[°C] . . . . . . . . . . . . 37 – 63

Hot water consumption at Δt 30˚C . . . . . . . . . . . . . . . . [l/min] . . . . . . . . . . . . 11,8

Max. flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[l]. . . . . . . . . . . . . . . 10

Electrical data

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [V/Hz] . . . . . . . . . . . 230/50

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [W] . . . . . . . . . . . . . 123

Protection cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP45

Extraction of combustion gases

Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . turbo

Max. length of concentric flue ø 60 / 100 . . . . . . . . . . . . [Em] . . . . . . . . . . . . . 9

Max. length of concentric flue ø 80 / 125 . . . . . . . . . . . . [Em] . . . . . . 13 . . . . . . . . . . . . 9

Max. length of separate flue ø 80 + 80. . . . . . . . . . . . . . [Em] . . . . . . . . . . . 20 + 20

Noise level (1 m from boiler at height 1,5 m) . . . . . . . . . .[dB]. . . . . . . . . . . . .do 55

Combustion gasses flow by weight . . . . . . . . . . . . . . . . .[g/s]. . . . . . . . . . . . .11,49

Dimensions - height / width / depth . . . . . . . . . . . . . . . . [mm] . . . . . . . . 780 / 450 / 323

Weight excluding water . . . . . . . . . . . . . . . . . . . . . . . . . . [kg] . . . . . . . . . . . . . . 44

Technical specifications - Model 24 KKV

Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II2H3P

Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B23, B33, B53, C13, C33, C43, C53, C83

Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electronic

Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G20 . . . . . . . . . .G31

Max./min. thermal input. . . . . . . . . . . . . . . . . . . . . . . . . [kW]. . . . . 29,6 / 5,3 . . . . . .29,5 / 5,2

Max./min. thermal output at temperature drop 80 / 60 °C[kW] . . . . 29,0 / 5,0 . . . . . .28,7 / 4,9

Max./min. thermal output at temperature drop 50 / 30 °C[kW] . . . . 31,7 / 5,7 . . . . . .30,6 / 5,6

Efficiency at temperature drop 80 / 60 °C. . . . . . . . . . . . [%] . . . . . . . 98,1 . . . . . . . . . .97,1

Efficiency at temperature drop 50 / 30 °C. . . . . . . . . . . . [%] . . . . . . . 104 . . . . . . . . . 101,4

Gas consumption (Q max.). . . . . . . . . . . . . . . . . . . . . . [m3/h] . . . . . . 3,13 . . . . . . . . . .1,21

Gas consumption (Q min.) . . . . . . . . . . . . . . . . . . . . . . [m3/h] . . . . . . 0,56 . . . . . . . . . .0,21

Gas pressure

Supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[mbar] . . . . . . .20 . . . . . . . . . . . 37

Heating

Max. operating pressure . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 3

Min. operating pressure . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . .0,6

Recommended operating pressure. . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . 1,2 – 2

Thermal range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[°C] . . . . . . . . . . . . 35 – 87

Expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[l]. . . . . . . . . . . . . . . 10

Boiler water volume (heating water volume) . . . . . . . . . . .[l]. . . . . . . . . . . . . . .2,7

Max. pressure in expansion vessel . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 3

Domestic hot water (HW)

Max. supply pressure . . . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . . 6

Min. supply pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . [bar]. . . . . . . . . . . . . .0,5

Min. flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [l/min] . . . . . . . . . . . . .1,5

Adjustable thermal range (depending on flow) . . . . . . . .[°C] . . . . . . . . . . . . 37 – 63

Hot water consumption at Δt 30˚C . . . . . . . . . . . . . . . . [l/min] . . . . . . . . . . . . . 14

Max. flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[l]. . . . . . . . . . . . . . . 12

Electrical data

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [V/Hz] . . . . . . . . . . . 230/50

Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [W] . . . . . . . . . . . . . 125

Protection cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP45

Extraction of combustion gases

Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . turbo

Max. length of concentric flue ø 60 / 100 . . . . . . . . . . . . [Em] . . . . . . . . . . . . . 9

Max. length of concentric flue ø 80 / 125 . . . . . . . . . . . . [Em] . . . . . . .13 . . . . . . . . . . . .9

Max. length of separate flue ø 80 + 80. . . . . . . . . . . . . . [Em] . . . . . . . . . . . 20 + 20

Noise level (1 m from boiler at height 1,5 m) . . . . . . . . . .[dB]. . . . . . . . . . . . .do 55

Combustion gasses flow by weight . . . . . . . . . . . . . . . . .[g/s]. . . . . . . . . . . . .13,36

Dimensions - height / width / depth . . . . . . . . . . . . . . . . [mm] . . . . . . . . 780 / 450 / 323

Weight excluding water . . . . . . . . . . . . . . . . . . . . . . . . . . [kg] . . . . . . . . . . . . . . 44

Technical specifications - Model 28 KKV