Protherm Panther 24 KTV, Panther 24 KOV, 24(12) KTO, Panther 12 KTO, Panther 12 KOO Operation And Installation Manual

Operation and

Installation Guide

24 KTV / v.18

24 KOV / v.18

24(12) KTO / v.18

24(12) KOO / v.18

Wall-hang gas boiler

Output range 8,4 - 24,6 kW

Possibility of equithermal control

Panther

xxxxxxxxxx_00 - v.1 1/2007

EN

version

1

Panther 24 KTV / 24 KOV / 24(12) KTO / 24(12) KOO

The boiler’s Serial no. is shown on the plate which is attached to the front side of the

control panel. The control panel is accessible after removing the front cover.

In the section “Operating Instructions” you will fi nd description of the boiler’s main functions
and guidelines on how to handle the boiler safely. The section “Installation Instructions”

is for skilled workers only.

Obsah

Table of contents

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

OPERATING INSTRUCTIONS

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

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

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

Error codes ........................................... 7

Schematic diagram of boiler control ..... 8

Starting up and shutting down boiler .... 9

Boiler control ......................................... 9

Protection functions ............................. 10

Service and maintenance .................... 11

Warranty and warranty conditions ....... 12

Technical specifi cations ....................... 13

Connection dimensions ....................... 17

Usable overpressure into system ....... 18

INSTALLATION INSTRUCTIONS

Schematic diagram of boiler ............... 19

Introduction .......................................... 21

Delivery completeness ........................ 23

Preparing for boiler installation ............ 25

Installing the boiler ............................... 27

Air and combustion gas

passages (KTV, KTO) .......................... 30

Electrical connection of boiler .............. 35

Connection of boiler to hot water tank . 36

Converting to different fuel .................. 37

Electrical wiring diagram..................... 38

2

1. The boiler and all the associated
equipment must be installed and used
in accordance with the installation
design, all the corresponding valid legal
prescriptions and technical norms and
with the manufacturer’s instructions.

2. The boiler may be installed only in an
environment for which it is designed.

3. After installation, the boiler may be put
into operation by an authorised service
organisation only.

4. The boiler complies with the prescripti­ons valid in the Slovak Republic. When
used in the conditions of other count­ries, any applicable deviations must be
identifi ed and addressed.

5. In the event of a defect call the
manufacturer’s service organisation
– any unauthorised intervention may
damage the boiler (and possibly also
associated equipment!).

6. The service technician putting the boiler
into operation for the fi rst time is obliged
to familiarise the user with the safety ele­ments of the boiler, their characteristics
and with the relevant required response
of the user, with the fundamental parts
of the boiler and manner of use of the
boiler. If this technician is also delivering
the boiler, he/she must ensure that the
original packaging of the boiler is availa­ble for potential further transport thereof
until the moment of launch into operati­on.

7. Check whether the delivery is comple­te.

8. Check whether the model and type
supplied corresponds to the type
required for use, i.e. check whether the
data relating the boiler settings stated
on the plate correspond with the data
relating to the local network supplying
fuel (gas) to the place of installation, or

have this performed by a professional
technician who shall install the boiler or
put it into operation.

9. Whenever you are not suffi ciently certain
of how to control the boiler, seek out and
study all the corresponding instructions
in this Operation and Installation Guide
carefully and proceed accordingly.

10. Never remove or damage any markings
and signs on the boiler. Also store the
original packaging of the boiler in an
undamaged condition for potential fur­ther transport in the case that the boiler
is not put into operation.

11. When performing any repairs, only ori­ginal parts may be used. It is prohibited
to make any changes to the boiler’s
internal installation, or to interfere with
this in any way.

12. When shutting the boiler down for a
longer period of time, we recommend
that you close the gas supply and dis­connect the boiler from the electricity
network. This recommendation applies
in conjunction with the general condi­tions stipulated in this Operation and
Installation Guide.

13. At the end of its useful life, the boiler or
its parts must be disposed of ecologi­cally, in a manner which avoids causing
any harm to the environment.

14. The manufacturer is not liable for and
provides no warranty for damages cau­sed by the failure to abide by:

• the conditions stipulated in this Operati­on and Installation Guide;

• prescriptions and norms;

• proper installation and operation proce­dures;

• conditions stated in the Warranty Certi­fi cate and the Service Book.

15. If the boiler is delivered to the user by

Introduction

3

the technician who also installs the boi­ler, this technician is also obliged to pre­sent to the user all the accompanying
documentation for the boiler (in particu­lar the Operation guide, Service Book
etc.). If the boiler is not put into opera­tion, the original packaging of the boiler
must be available for the potential fur­ther transport thereof.

Safety of equipment and people

• According to the fi ndings of the SZÚ
Brno (National Testing Institute), the boi­ler (as well as all its optional accesso­ries) complies with the requirements of
European Directive 90/396/EEC on gas­fuelled appliances and European Directi­ve 92/42/EEC on effi ciency, the Euro­pean Directive 2006/95/EC on electrical
means of operation for use in certain
voltage ranges and the European Directi­ve 89/336/EEC on electromagnetic com­patibility.

• The appliance is also approved accor­ding to the European norms EN 677, EN
625, EN 60335-01, EN 50165, EN
55014, EN 61000-3-2 and EN 61000-3-

3.

• In order to operate and handle 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
conditions – the most essential 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 fi re safety area: STN 92 0300;

- for installation and fi tting (and repairs):
STN EN 1755 or STN 38 6460, as appli­cable STN 38 6462, Decree no. 48/1982
Coll. (as amended by the later prescripti­ons) and the binding occupational health
regulations;

- in time of running and operation: STN 38

6405;

- in the area of discharge of combustion
gases and air infl ow STN EN 483, com­pany material – “catalogue of dual piping
for discharge of combustion gases and
infl ow of combustion air designated for
type C gas appliances, i.e. in closed
“TURBO” version.

• 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. During use of the boiler
any handling by children, persons under
the infl uence of intoxicating substances,
non-certifi ed persons, etc. must be pre­vented.

In practice situations may arise in which

the following essential measures must
be adopted:

• prevent the boiler from (even accidental­ly) being switched on while conducting
inspections or working on the combusti­on gases fl ue route or gas and water dis­tribution pipes by disconnecting the boi­ler from electrical power supply also by
other means than only using the main
switch (e.g. by pulling the power cord
plug out of the power socket);

• shut the boiler down every time when
there are any (even temporary) fl amma­ble or explosive fumes present in the
area 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;

• in the case of a water leak 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;

4

Operating instructions

Operating instructions

Controls and signals

Main switch

The main switch (Fig. 1, Position 1) is
used to switch the boiler on or off. The
main switch is situated in the lower half of
the boiler control panel.

Caution:

The boiler must be put into ope­ration and switched on for the fi rst time by
an authorised service organisation!

Control panel

On the boiler’s control panel you can moni­tor current values and set the required
parameters.

The control panel has the following control
elements (Fig.1):

2.

Heating water LED – indicates hea­ting water temperature setting or display
mode

Fig. 1

1

2

3

4

5

6

7

8

9

1110

3.

Hot water LED – indicates hot water

temperature setting or display mode

4.

Heating water pressure LED – indicates

that pressure is being displayed

5.

Boiler malfunction indicator

6.

Flame indicator – LED lit when burner

fl ame is active.

7.

MODE button – used to switch to diffe­rent reading or value setting modes and to
confi rm the set values

8.

(+) button – used to increase the value
of the parameter being set

9.

RESET button – to unblock errors

10.

Display – displays the values of pres­sure, temperature, service parameters
and error messages

11.

(-) button – used to decrease the value
of the parameter being set

5

Selecting Read mode

Selecting Setup mode

Setting heating water temperature

Press the

MODE

button for approx.
2 seconds, then
press the

MODE

button as many
times as necessa-

ry until the LED by the symbol

starts

Displaying heating water temperature

After turning the
boiler on with the
main switch, the
current heating
water temperature
will appear on the

display. This status is indicated by the lit
LED underneath the symbol

.

Indication of hot water use

In the case of hot
water fl ow (min.
1,5 l/min) the
required /set tem­perature of the

taken hot water
is displayed on the control panel display.
This status is indicated by the lit LED by
the symbol

.

Note:

It is valid only for combinated boi-

lers 24 KTV and 24 KOV.
If the boiler (types 24 KTO and 24 KOO)

is connected to an external hot water tank
with NTC sensor, you can show the current
temperature of the hot water in the tank by
pressing „+“ button for 2 seconnds. After
30 seconds display is switched to heating
water temperature display automaticaly.

Please note:

The current hot water tem­perature in the tank is displayed only if
NTC sensor is connected. On other case
the hot water temperature is not not dis-

played.

Caution:

Upon heating the Hot Water
tank (KTO and KOO versions) this status
is indicated by the diodes by the symbol
– the diode is lit and at the same time the
point fl ashes in the lower right hand cor­ner of the display.

Displaying heating water pressure

By pressing the

MODE

button for
approx. 2 seconds,
the pressure in
the heating water
system will be dis-

played for 30 seconds. At the same time
the LED by the symbol

is lit.

Low heating water pressure alert

When the hea­ting water pres­sure either drops
below 0.6 bar or
exceeds 2.8 bar,
the heating water

pressure appears on display and the LED
by the symbol will start fl ashing. The
boiler remains functional, but the water
pressure must be adjusted to the recom­mended value of 1 – 2 bar. If the value
of the heating water pressure drops below

0.3 bar the boiler is switched off.

fl ashing. Use the “+” and “-“ buttons to set
the parameter of the heating water tempe­rature. The setting range is --, 35 to 87°C
(ascending by 1 degree). On setting the
parameter -- the boiler warms only the
hot water in the tank – the boiler works in

“summer mode”

.

6

Setting hot water temperature

Press the

MODE

button for approx.
2 seconds, then
press the

MODE

button as many

times as necessa­ry until the LED by the symbol starts
fl ashing. Use the “+” and “-“ buttons to set
the parameter of the hot water temperature.
The setting range is --, 35 to 63°C (ascen­ding by 1 degree). On setting the parameter

-- the boiler warms only the heating water.

Note:

In versions 24 KTO and 24 KOO set­ting hot water temperature is possible only if
an external hot water tank is connected to
the boiler.

„Permanent comfort HoW
preparation“ function (only for types
24 KTV and 24 KOV)

Using of this func­tion is possible to
reach more quick
hot water delivery.
In this mode boi-

ler heat hot water
exchanger for 65 °C on the fl y. The boiler
is activated this function frequently if tem­perature decrease below 50 °C.

Setting: Push the

MODE

buton for 2

seconds. Then press the

MODE

button as
many times as necessary until the para­meter P1 or P0 starts display.

For activation of „permanent comfort hot
water preparation“ function use the “

+

”

and “-“ buttons to set parameter P1.
For deactivation of „permanent comfort

hot water preparation“ function use the “

+

”

and “-“ buttons to set parameter P0.
Permanent function of the preheating is

active only:

- in „

SUMMER

“ mode (heating to the sys-

tem is switched off

- in range, when the boiler is switched off
by the room thermostat.

The factory setting of this parameter is P0

- function is switched off.

„Simple comfort HoW preparation“
function (only for types 24 KTV and
24 KOV)

This function is
active only if we
make short delive­ry of the hot water
(range between

tap opening and
closing is 2 - 5 seconds), when boiler is
not heating. On the case if range is smal­ler 2 or higher 5 seconds, the boiler is con­troled by hot water request (after closing
the tap, hot water is not prepared).

Setting: Push the

MODE

buton for 2

seconds. Then press the

MODE

button as
many times as necessary until the para­meter C1 or C0 starts display.

For activation of „permanent comfort hot
water preparation“ function use the “

+

”

and “

-

“ buttons to set parameter C1.

For deactivation of „permanent comfort
hot water preparation“ function use the “

+

”

and “

-

“ buttons to set parameter C0.

The factory setting of this parameter is C0

- function is switched off.

Note:

This function is possible to activate

only if paremeter P0 is set.

7

Error codes

Displaying of malfunctions

In the case of malfunction the malfunction
symbol alternately appears on the boiler
display:

F. and malfunction
number (e.g. 01).

At the same time the malfunction indicator
appears by the symbol - LED is lit.

Boiler overheated – F.20

Boiler has
overheated. The
boiler is automa­tically shut down
and waits for the

temperature to
drop. After the water has cooled to the
operational level, the boiler restarts it­self. If code F.20 appears repeatedly, call
authorised service.

Insufficient water quantity – F.22

Insuffi cient quan-

tity of water in

heating water

system. Boiler is

automatically shut

down. Add the
required quantity of water into the heating
water circuit (page 10 – Filling water into
heating system). Press RESET button. If
code appears repeatedly, call authorised
service.

Ignition malfunction – F.28

Burner not ignited
on starting boiler.
Check gas cock
under the boiler
and press RESET.
If the malfunction

persists call authorised service.

Note:

The boiler will attempt to start itself
5 times, if ignition fails malfunction F.28
will appear on the display.

Annual service check required

When this code
is displayed it is
necessary to con­tact authorised
service for the

performance of
a preventive “annual” check. This type of
code is not a factory setting. Upon request
it is possible to activate this function via an
authorised service, which will set the leng­th of the service interval. The length of the
service interval is calculated in hours and
is derived from the time of activity of the
boiler burner.

Note:

A message on performance of a
preventive “annual” check is indicated by
display of the “SE” message alternating
with display of standard information (e.g.
temperature of heating water in boiler).

Other error codes

In the case of display of other error codes,
attempt to restart running of the boiler
using the RESET button. If malfunction
persists contact authorised service.

8

LED flashes

Recommended pressure

value 1.2 – 2 bar

.

Boiler switched off if pressure

drops below 0.3 bar

LED flashes

Setting range 35-87°C

Setting interval 1°C

- off / SUMMER

mode

Proceed according to instructions

LED flashes

Setting range 37 – 63°C

P1 = on

Select P1 or P0 using (+)

or (-) buttons

P0 = off

Setting interval 1°C

- off

Start

HeW

temperature

Water pressure

in boiler

Heating water

temperature setting

Hot water

temperature settings

HoW preparation mode

- permanent COMFORT

Notification of heating water

pressure drop

Error display

Service message

Attempt to restart running of

boiler using RESET button.

If malfunction persists call

authorised service.

Information about service

message displayed after elapse

of set interval. Function must be

activated by service technician.

in versions KTO and KOO only if

outside hot water tank and NTC

sensor is connected

valid only for KTV

and KOV versions

C1 = on

Select C1 or C0 using (+)

or (-) buttons

C0 = off

HoW preparation mode

- simple COMFORT

Fig. 2

Schematic diagram of boiler control

9

Starting up the boiler

Important:

Putting the boiler into operati­on and starting it up for the fi rst time must
be performed by an authorised service
only!

If you wish to start the boiler up after it has
been put into operation, make sure that:

1 the boiler is connected to the electrical

power supply;

2 all isolation valves (heating water, hot

water, gas) underneath the boiler are
opened;

3 the heating water pressure is within the

recommended range of 1 – 2 bar
Turn the main switch (Fig. 1, position 1).
After a short time the heating water tem­perature appears on the display and the
LED by the

symbol is lit (Fig. 1, position

2). After ignition of the burner the LED by
the symbol

is lit (Fig. 1, position 6).In
the event of a safety boiler shutdown
the red malfunction LED

is lit on the

control panel (Fig. 1, position 5), and an

error code appears on the boiler display.
Unblock the boiler by pressing the RESET
button (Fig 1, position 9). If safety shut­down recurs after a short time again, or
if the boiler cannot be unblocked by pres­sing the RESET button, call an authorised
service organisation.

Shutting the boiler down

Switch off the main switch (Fig. 1, position

1).
If the boiler is to remain shut down for a

longer period of time, close all cocks (hea­ting water, hot water, gas) underneath the
boiler. Shutting down the boiler must be
performed taking into account the heating
water temperature in the boiler and the
surrounding environmental temperatu­re in the given season of the year. In the
case of danger that the boiler may freeze,
discharge the water from the boiler, hea­ting system and hot water distributors.

Starting up and shutting down boiler

Boiler control

Using the boiler without a room
control unit

When running in this mode, the boiler
maintains the selected heating water
temperature. No room control unit is con­nected, the terminals for its connection
must be mutually interconnected (stan­dard factory setting).

Setting procedure:

• turn the main switch to the ON position;

• set the required heating water tempera­ture on the control panel.

Operation of boiler with room
control unit

In the case that a room control unit is
used, it is necessary to set the maximum
Heating Water temperature for which your

heating system has been designed, and
which is capable of covering the thermal
loss of the building even at low outside
temperatures, on the control panel of
the boiler (in order to prevent damage to
the system). The process of heating the
heating water can then be controlled by a
control unit only up to the maximum value
of the heating water you have set on the
control panel of the boiler.

Note:

Thermostatic valves should not be
fi tted on the radiators in the room where
the control unit is installed

Caution:

The manufacturer does not
accept responsibility for damage caused
by faulty setting of the boiler or room con­trol unit.

10

On/OFF regulator

The boiler maintains the selected Heating
Water temperature. Operation of the boiler
is interrupted (switched on/off) according
to the internal temperature of the room
where the room control unit is installed.

Regulator with selected output
modulation function

The room control unit regulates the out­put of the boiler into the heating system
continuously on the basis of the internal
temperature.

Operation of boiler with equithermal
regulation

The boiler regulates the Heating Water
temperature on the basis of changes in
the outside temperature. In the case of
this type of regulation it is necessary to
use a regulator with an equithermal regu­lation function (Protherm Thermolink B,

Thermolink P or Thermolink RC) and con­nect an outside temperature sensor.

Caution:

By setting the maximum tempe­rature of the heating water on the control
panel of the boiler you may infl uence the
activity of equithermal regulation. In addi­tion, the temperature of the heating water
selected on the control panel of the boiler
is also the limit temperature. In its require­ment, the room regulator cannot exceed
the temperature limit of the maximum
permitted temperature of the heating
water as set on the control panel of the
boiler. Appropriate setting of the heating
water temperature on the control panel
of the boiler is one of the means of pro­tection against exceeding the maximum
permitted temperature into the heating
system (fl oor heating). Nevertheless, we
recommend installation of the heating
system with an additional safety armature,
which shall prevent undesirable increases
in temperature.

Protection functions

Setting boiler output

The factory setting of the boiler is to maxi­mum output. In case of necessity it is
possible to adjust the output of the boiler
according to requirement (with regard to
the properties of the boiler).

Important:

Change of setting of boiler
output must be performed only by an
authorised technician.

Protection against freezing

The boiler has inbuilt antifreeze protecti­on, which prevents the boiler (but not the
heating system and hot water distributors)
from freezing. When the temperature of the
heating water drops below 8°C, the pump
is automatically started without regard to
the requirement of the room control unit
or without regard to the setting of sum­mer mode. If the temperature of the hea­ting water in the boiler rises and reaches

10°C, the pump is automatically switched
off. If the temperature of the heating water
continues to drop and reaches the tempe­rature of 5°C, the boiler is started up and
heats the heating water to 35°C.

Important:

During active function of anti­freeze protection, the three-way valve is
switched to central position, thus activa­ting heating of the heating water and hot
water.

Protection of hot water tank against
freezing (for types KTO and KOO
with connected external hot water
tank)

When the hot water in the tank drops
below 10°C, the boiler is automatically
started and heats the tank to 15°C. This
function is active only in the case of con­nection of an external tank equipped with
an NTC sensor.

11

Pump protection

Switching the pump on for a short time
(approx. 20 s) when it has been in the
room continuously for 23 hours ensures
protection against blocking or sedimenta­tion when the pump has been idle for a
longer period of time.

Important:

This function of the boiler can-

not be blocked.

Running down of pump

After heating of the hot water, the running
down time of the pump is set at 30 s.

During heating of the heating water the
running down time of the pump is set at 3
min. The maximum settable run down time
of the pump is 60 min.

Important:

This function is active only in

the case of a boiler with mains voltage.

Anti-cycling

The boiler is equipped with an anti-cycling
function. The time after which the boiler is
switched back on is automatically calcu­lated by the control panel with regard to
the conditions in the boiler.

Disconnection of boiler from mains

Disconnect the boiler from the power
supply only during service interventions
or when boiler is idle for longer periods
(see chapter “Shutting the boiler down” on
page 8). Upon disconnection of the boiler
from the power supply all protective func­tions of the boiler are deactivated.

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 operating parameters settings.

If the red LED (Fig. 1, position 5) is lit on
the control panel after electrical power
supply restoration, proceed according to
the instructions in the section Starting up
and shutting down boiler.

Note:

The boiler may be blocked as a
consequence of overheating caused by
the pump being switched off as a result of
power failure. Rectify this fault by pressing
the RESET button on the boiler control
panel. If the fault persists call an authori­sed service.

Safety valve

The boiler is equipped with a safety valve
with an opening pressure of 3 bar. DO NOT
TOUCH THE SAFETY VALVE! Whenever
the safety valve starts releasing heating
water, switch off the boiler, disconnect if
from the electrical power supply and call a
service organisation. If the heating system
repeatedly loses pressure, consult your
service organisation.

Important:

All the 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 is
in the ON position (I).

Service and maintenance

Toping up water to the heating
system

Water to the heating system (only in small
quantities) can be topped up through the
boiler’s top-up valve (Fig. 3).

When topping up water, the following con­ditions must be met:

1. Pressure of the water being supplied to
the boiler must be always higher than
the pressure of the water inside the hea­ting system.

2. When toping up water, the boiler must
be cold (water temperature must not be
higher than 30°C).

12

3. Recommended water pressure inside
the cold boiler (temperature not more
than 30˚C) is within the range of 1 – 2
bar.

Important: If the pressure in water mains
is lower or equal to the pressure of the
water 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 behind
the top-up valve.

However, the manufacturer disclaims
responsibility for any damages caused
by incorrect manipulation with the top-up
valve and a failure to abide by the condi­tions specifi ed 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

• if the boiler display indicates that the
heating water pressure is below 0.6 bar,
information with the current pressure
value appears on the display, and the
red LED by the symbol (Fig. 1, positi­on 4) fl ashes on the boiler control panel

• turn-open the top-up valve (Fig. 3).
Observe the pressure increase on the
control panel display

• fi ll the system with water, pressure
should be within the range of 1.2 – 2
bar

• when the pressure has reached the
required value, close the top-up valve
manually.

• bleed all radiators carefully (water must

be running out smoothly and continuous­ly, without any air bubbles);

• check whether the pressure shown on
the display is within 1.2 and 2 bar. If
necessary, top up the system more.

Cleaning

The boiler cover can be cleaned with a
moist cloth and afterwards dried and polis­hed with a dry cloth. Do not use abrasive
detergents or solvents.

Important: Before cleaning turn the boiler
off with the main switch.

Regular service

To assure continuous and safe running of
your boiler, we recommend that the boiler
is checked and serviced in regular yearly
intervals. These inspections are not cove­red by the boiler’s warranty. The works to
be done are specifi ed in the Service Book
and must be performed by an authorised
service.

Warranty and warranty conditions

The PROTHERM Panther is covered by
the warranty defi ned in the Warranty Cer­tifi cate, the Service Book and by other

Fig. 3

Top up valve

closed

open

conditions specifi ed in this Operation Gu­ide and Installation Guide (chapters Intro­duction and Boiler installation).

13

Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II

2H3P

Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B

11BS

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

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

Max. thermal input. . . . . . . . . . . . . . . . . [kW] . . . . . . . . . . . . . . . 26,9. . . . . . . . . . . . . 25,5

Min. thermal input . . . . . . . . . . . . . . . . . [kW] . . . . . . . . . . . . . . . 9,6 . . . . . . . . . . . . . 10,4

Max. thermal output . . . . . . . . . . . . . . . [kW] . . . . . . . . . . . . . . .24,6 . . . . . . . . . . . . . 23,0

Min. thermal output . . . . . . . . . . . . . . . . [kW] . . . . . . . . . . . . . . . 8,4 . . . . . . . . . . . . . 8,9

Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . [%] . . . . . . . . . . . . . . .91,5 . . . . . . . . . . . . . 90,2

Gas consumption (Q max. / Q min.) . . . . . . . . . . . . . . . . .2,83 / 1,01 [m3/h]. . . 2,14 / 0,87 [kg/h]

Gas pressure

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

Jet pressure min./max. . . . . . . . . . . . . [mbar] . . . . . . . . . . . . 1,7 / 12,9 . . . . . . . . . 6,2 / 35,2

Jet diameter . . . . . . . . . . . . . . . . . . . . . [mm] . . . . . . . . . . . . . . . 1,2 . . . . . . . . . . . . . 0,7

Heating

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

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

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

Temperature range . . . . . . . . . . . . . . . . . [°C] . . . . . . . . . . . . . . . . . . . . . . 38 – 85

Expansion vessel . . . . . . . . . . . . . . . . . . . [l] . . . . . . . . . . . . . . . . . . . . . . . . . 7

Max. quantity of heating water in system . [l] . . . . . . . . . . . . . . . . . . . . . . . . 90

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

Hot water

1)

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

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

Minimum hot water flow quantity . . . . . [l/min] . . . . . . . . . . . . . . . . . . . . . . . . 1,5

Adjustable temperature range

(flow-dependent) . . . . . . . . . . . . . . . . . . . [°C] . . . . . . . . . . . . . . . . . . . . 37 – 63 (1)65)

Max. quantity of heating water - at Δt 30 °C [l/min] . . . . . . . . . . . . . . . . . . . . . . 12

Electrical data

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

Input (max.) . . . . . . . . . . . . . . . . . . . . . . . [W] . . . . . . . . . . . . . . . . . . . . . . . . 85

Prot. cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP 45

Current . . . . . . . . . . . . . . . . . . . . . . . . . . . [A] . . . . . . . . . . . . . . . . . . . . . . . . 0,38

Extraction of combustion gases - method

. . . . . . . . . . . . . . . . . . . . . into chimney

Flue diameter . . . . . . . . . . . . . . . . . . . . [mm] . . . . . . . . . . . . . . . . . . . . . . . . 126

Combustion gases temperature . . . . . . . [°C] . . . . . . . . . . . .78,8 - 101,4 . . . . . . 84,2 - 109,1

Combustion flow mass . . . . . . . . . . . . . [g/s] . . . . . . . . . . . . . . . . . . . . . . . . 23

Min. required stable chimney thrust . . . .[Pa] . . . . . . . . . . . . . . . . . . . . . . . . . 2

Noise level (1m from the boiler at 1.5m height) [dB] . . . . . . . . . . . . . . . . . . . . . up to 55

NOx class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Dimensions – height / width / depth . . . [mm] . . . . . . . . . . . . . . . . . . .

740 / 410 / 330

Weight without water . . . . . . . . . . . . . . . . [kg] . . . . . . . . . . . . . . . . . . . . . . . . 32

Technical parameters 24 KOV / 24 KOO

1)

For type 24 KOO only in the case of connection of hot water tank