Protherm Gepard, 23 MTV, 23 MOV Installation Manual

23 MTV v.19

23 MOV v.19

Wall-hang non-condensing boiler

Power 8,5 - 23,3 kW

Flow heating HW

Gepard

version

Installation manual

EN

- 1 -

CONTENTS

INTRODUCTION

Manual1

Product documentation1.1 ..............................................................3

Relevant documents1.2 ..................................................................3

Explanation of symbols1.3 ..............................................................3

Descriction device2

Safety regulation2.1 .......................................................................3

Data plate2.2 ...................................................................................3

Type of gas2.3 .................................................................................3

Regulations and legal provisions2.4 ...............................................3

Hydraulic scheme2.5 ......................................................................5

Safety instructions and regulations3

Safety instructions3.1 ......................................................................7

INSTALLATION

Location of equipment4

Location4.1 ......................................................................................8

Clearance4.2 ...................................................................................8

Boiler installation5

Contents of delivery5.1 ...................................................................8

Recommendations before you install5.2 .........................................8

Dimensions5.3 ................................................................................9

Mounting the boiler5.4 ..................................................................10

Hydraulic connection6
Air and exhaust lines7

Regulations7.1 .............................................................................14

Description exhausting kits7.2 ......................................................14

Connecting the boiler to the electricity supply8

Entrance to BMU8.1 ......................................................................17

BMU8.2 .........................................................................................18

Boiler wiring diagram8.3 ................................................................19

External accessories8.4 ................................................................20

Putting into operation9

Filling the heating system9.1 .........................................................20

Re-fi lling of the boiler9.2 ...............................................................20

First ignition9.3 ..............................................................................20

Testing the heating system9.4 .......................................................20

Specifi c settings10

Status of the appliance10.1 .............................................................21

Technical settings and a list of equipment parameters10.2 ............21

Re-check and restart10.3 ................................................................24

Informations for user11

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CONTENTS

ÚDRŽBA

Search and trouble-shooting12

Diagnosing faults12.1 ......................................................................25

Fault codes12.2 ...............................................................................25

Gas conversion13

Settings13.1 ....................................................................................26

Discharging water14

Heating system14.1 .......................................................................27

Servising15

Function check15.1 ........................................................................27

Replacement parts16

Spare parts17
Techni18 cal parameters

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INTRODUCTION

INTRODUCTION

Manual1

Product documentation1.1

Instructions are included with the device and after the
installation must be handed to the user in accordance with
applicable regulations.

Study the handbook carefully to ensure a safe installation, •
safe use and proper service. W

e are not responsible for
any damage resulting from failure to follow the instructions
presented in this handbook.

Relevant documents1.2

Contents of the boiler is the following documentation:
user manual, warranty card, a list of service centers, service

book

Explanation of symbols1.3

a

DANGER: Risk of injury.

e

DANGER: Risk of electric shock.

b

CAUTION: Risk of damage to the equipment or
its edge parts.

i

IMPORTANT: Useful information.

Description of the device2

Safety regulations 2.1

The following regulations and safety instructions must be
observed:

Never tamper with the safety devices.•
Do not modify the equipment or its immediate surroundings, •

as this could affect the safe use of the boiler.
Do not under any circumstances destroy or remove the •

sealing from any of the parts.
Never carry out alone any maintenance or repairs to the •

equipment. Only qualifi ed technicians may work with the
equipment.

Be careful not to allow children to play with the boiler.•
Do not plug or obstruct the ventilation system.•

Some home “improvements” may signifi cantly affect the
functioning of the boiler. Before carrying out any such
intervention you must consult with the installer.

Do not site the equipment in excessive dampness.•
Do not use and do not store explosive or fl ammable •

materials (e.g. gasoline/petrol, aerosols, thinners, chlorine­based cleaning agents, paints, glues etc.) in the same space
as the boiler. Under certain conditions these materials may
be corrosive.

Do not touch the equipment surfaces - e.g. the ventilation •
pipes, hydraulic connectors and so on — even after the
boiler has been turned off, as these surfaces may be hot.
Touching these surfaces may lead to burns or scalding.

Be prudent when using the hot water tap. Water coming out •
of this tap may be scalding.

This equipment contains metal parts (components). In working
with it and in cleaning it, particularly its corners, you must be
careful.

If water leaks from the unit you must immediately turn off •
the cold water intake and the leak must be repaired by a
qualifi ed technician.

Do not store any objects on top of the equipment.•

Product label2.2

Type the label indicates the country where the equipment was
manufactured and the country where the equipment may be
installed.

Location of the manufacturing label:
Production label is located on the back of the electrical box. It is

accessible by tipping the entire electrical box.
On the label is the type of boiler designation, serial number, the

appliance category, type and inlet gas pressure, CH maximum
pressure, DHW maximum pressure, the maximum temperature
in the boiler, DHW maximum fl ow, distribution, thermal output,
thermal consumption, effciency, electrical casing and coverage
certifi cation marks.

a

The device can be connected only to the type
referred to the gas to the manufacturing label.

Type of gas2.3

This boiler is for natural gas but can be converted into propane.
Natural gas: G25

Regulations and legal provisions2.4

CE mark 2.4.1

The boiler (as well as all its optional accessories) complies
with the requirements of European Directive 90/396/EEC
on gas-fuelled 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

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INTRODUCTION

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.

Local Regulation2.4.2

The boiler is designated for operation within the normal AA5/
AB5 environment in compliance with STN 33 2000-3 and
STN 33 2000-5-51 (i.e. a temperature range of 5 – 40°C,
temperature-dependent humidity to a max. of 85%).

PANTHER boilers are suitable for the conditions of zones 1, 2
and 3, in rooms with a bath or shower and in washing areas as
set out in STN 33 2000-7-701; they may not be installed in zone
0 (Fig.8). Before installation in the areas mentioned, protection
against electric shocks must be provided for according to the
same norms.

The boiler complies with Ministry of Health Decree No 13/1977
Coll., i.e. on noise, for installation in residential and public
areas.

The boilers are built to operate with heating water, in
compliance with STN 07 7401. (Above all, the water must never
be acidic, i.e. its pH must be higher than 7 and it should have
minimal carbonate hardness.)

The requirements regarding the characteristics of domestic
water are set out in STN 83 0616 (potable water STN 75

7111). With regards to water with total material concentrations
of calcium and magnesium greater than 1.8 mmol/l, further
“non-chemical“ measures against scale deposits (e.g. operation
of magnetic water treatments in combination with settling
equipment) are advisable.

Silting up of the boiler with contaminants from the heating
system or the settling of boiler scale on these disturbances, or
on induced disturbances (e.g. silting up of the exchanger, pump
breakdowns) are not covered by the boiler warranty.

The distance from fl ammable materials (e.g. PVC, fi breboard,
polyurethane, synthetic fi bres, rubber etc.) must be suffi cient to
keep the surface temperature of these materials below 80°C.

The minimum working (unhindered) space in close proximity
to the boiler must be such that the boiler can be worked with
easily and safely with bare hands and with the usual hand tools;
we recommend a minimum distance of 300 mm from up and
under, 10 mm from side and a minimum of 600 mm in front of
the boiler.

CH (heating) + HW (hot water) -

The GEPARD boiler (model MTV and MOV) supplies both
central heating and hot water for the home.

Non-condensing boiler with exhaust vented to a chimney -

Model MOV must be fi

tted to a ventilation system (chimney).
The boiler comes equipped with a safety device that shuts off
the gas feed if the chimney becomes blocked.

Non-condensing boiler with forced extraction of exhaust. -

The MTV model is gas models fi

tted with a ventilation system
for the intake of air and the venting of exhaust. Thanks to this
ventilation system, the heater can be installed in any space.

If the ventilator fails or if the chimney becomes blocked, the
pressure switch shuts down the heater.

The boiler must be installed and commissioned by a qualifi ed
technician. This ensures proper installation and operation
in compliance with valid norms. If any maintenance, repair
or adjustments concerning the gas are needed, a qualifi ed
technician must be called.

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INTRODUCTION

Hydraulic scheme 2.5

23 MOV2.5.1

1

ABCDE

1

2

3

4

5

6

7

8

9

10

20

19

17
18

16

14

13

12

15

11

Legend
1 Safety valve
2 Gas valve
3 HW exchanger
4 Discharge valve
5 Burner
6 Ignition electrodes
7 NTC CH water intake temperature sensor
8 Combustion chamber
9 CH exchanger
10 Exhaust gas collector
11 Combustion thermostat
12 NTC CH return water temperature sensor
13 Expansion tank
14 Ionising electrode
15 Pump
16 CH pressure sensor
17 3–way motor valve
18 HW fl ow sensor
19 HW fi lter
20 Inlet valve
A CH outlet
B HW outlet
C Gas inlet
D HW inlet
E CH inlet

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INTRODUCTION

23 MTV2.5.2

1

2

3

4

5

6

7

8

9

10

11

ABCDE

21

20

18
19

17

15

14

13

16

12

Legend
1 Safety valve
2 Gas valve
3 HW exchanger
4 Discharge valve
5 Burner
6 Ignition electrodes
7 NTC CH water intake temperature sensor
8 Combustion chamber
9 CH exchanger
10 Exhaust gas collector
11 Ventilator
12 Air manostat
13 NTC CH return water temperature sensor
14 Expansion tank
15 Ionising electrode
16 Pump
17 CH pressure sensor
18 3–way motor valve
19 HW fl ow sensor
20 HW fi lter
21 Inlet valve
A CH outlet
B HW outlet
C Gas inlet
D HW inlet
E CH inlet

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INTRODUCTION

Safety instructions and regulations3

Safety instructions3.1

When gas pressure exceeds the limit specifi ed input device, the
device may not start.

e

Incorrect installation can cause electric shock or
damage to equipment.

Never disconnect safety devices and do not try to edit them.•
Follow these steps and ways of handling:•
Hold the device in its lower part ­Wear appropriate protective equipment, eg. gloves, safety -

shoes.
Ensure that you adhere to proper lifting practices:•
Have settled back. ­Do not rotate in the belt. ­Do not bend the upper body. ­Always take plant palms. ­Use for handles. ­Hold the load close to the body. ­If necessary, always ask for help. ­The user may not under any circumstances, interfere with •

the installation of closed or edit.
When engaging the right set seals to prevent leakage of gas •

or water.
This device contains metal parts (components) and when •

handling and cleaning them, especially the corners, you have
to be careful.

Before performing maintenance or replacement of a spare part
must be carried out basic precautions:

Turn off the device.•
Disconnect the device from the tension.•
Close the valve to supply gas to the facility.•
Hydraulic disconnect device by isolating valves, if they were •

delivered.
If you replace the hydraulic components that allow the device •

off.
While working with the device, protect all the electrical parts •

from contact with water.
Use only original spare parts.•
Use only new O-rings and gaskets.•
Upon completion of work on gas or water components of •

check seal.

After the intervention, test the equipment to service and •
safety check.

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INSTALATION

INSTALLATION

Location of equipment4

Location4.1

Instructions4.1.1

Before you choose a location for placement of equipment,
carefully consult safety warnings and instructions in the user
manual and installation guide.

Make sure the wall on which you installed the device, a •
suffi ciently strong structure to hold the weight of equipment.

Ensure that the area in which the device installed, big •
enough for its installation and that was around him a large
enough space. This allows access and control of water
mains, gas and ventilation (see Chapter clearance).

Explain the requirements of the user equipment.•

Clearance4.2

The minimum working (unhindered) space in close proximity
to the boiler must be such that the boiler can be worked with
easily and safely with bare hands and with the usual hand tools;
we recommend a minimum distance of 300 mm from up and
under, 10 mm from side and a minimum of 600 mm in front of
the boiler.

Boiler installation 5

Contents of delivery5.1

Contents of delivery

1 boiler
2 draw bar
3 exhaust gas diffuser (only for 23 MTV)
4 sealing
5 template
6 butt-end of water intake
7 butt-end of outlet valve
8 service manual
9 warranty

Check the contents of the packaging.•

Recommendations before you install5.2

Nominal pipe internal diameter is chosen in the usual way,
using the pump characteristic. Distribution pipes are designed
according to the requirements for the system performance, not
according to the boiler’s maximum output. However, measures
must be taken in order to ensure suffi cient fl ow so that the water
temperature difference in the supply and the return pipe is less
than or equal to 20˚C. Minimum fl ow must be 400 l/h.

The piping system construction must prevent air bubbles from
developing, making permanent bleeding of the system easier.

Bleeding valves should be situated on all high points of the
system and on all radiators.

It is recommended to install upstream the boiler a set of heating
water, hot water and gas isolation valves.

It is recommended to install upstream the boiler a set of heating
water, hot water and gas isolation valves.

At the lowest point of the heating system we recommend
installation of an exhaust valve, which shall also serve for fi lling
of the heating system.

Before fi nal installation of the boiler, the heating distribution
system pipes must be fl ushed a few times with pressurised
water. In old, already used systems, the fl ushing must be done
in the direction opposite to the fl owing heating water.

Important: Before connecting the boiler to the heating system,
remove the plastic plugs located inside all connection outlets.

Before installing a new boiler, it is essential to clean the
system thoroughly. In old systems it is necessary to remove all
sludge settled at the bottom of radiators (predominantly gravity
system).

In new systems it is necessary to remove all conservation
material used by majority of radiator manufacturers.

It is recommended to install upstream the boiler (i.e. on the
heating water return pipe) a sludge separator. The sludge
separator should be constructed in such a way that it is easy to
empty at regular time intervals without the necessity to drain a
large quantity of water from the heating system. The separator
can be combined with a fi lter, but a fi lter with a sieve alone is
not suffi cient protection. The fi lter and sludge separator must be
checked and cleaned regularly.

During reconstructions, in adverse building arrangements
and so on, the boiler may be connected to the CH heating
system, the HW system and the gas inlet with fl exible elements
(hoses), but only those designated for this purpose. If fl exible
elements are used, these should be as short as possible and
must be protected from mechanical and chemical stresses and
damages. It must also be ensured that before the end of their
life cycle or reliability in maintaining their parameters (according
to their manufacturers’ data) they are always replaced by new
ones.

Note: The boiler includes fi lter which is situated below the HW
fl ow sensor. You have to take out the HW fl ow sensor with fi lter
to clean up the fi lter.

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INSTALATION

Dimensions5.3

Gepard 23 MOV5.3.1

311

410

742

179

205

Ø125

Gepard 23 MTV5.3.2

311

410

Ø39

742

184

205

82

65

116

65

82

205

26

160

134

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INSTALATION

Mounting the boiler 5.4

When mounting the boiler on the wall, proceed in accordance
with the installation design conditions (e.g. wall load bearing
properties, chimney inlet, pipe inlet and outlet connections).

The mounting procedure:

Take the paper template and attach it (for instance by ­adhesive tape) to the place of installation. When positioning
the template, user a plumb line or a spirit level.

Using the marked points on the template, drill all necessary ­holes (mounting bar, connecting ramp).

If combustion gas discharge is to be directly via the building’s ­façade, project and mark a point for a pass of the concentric
ducting.

Remove paper template. ­Drill the required holes, respecting the diameters shown in -

the template.
Insert wall plugs into the holes for the mounting bar and then -

fasten the bar properly with the screws provided.
Hang the boiler on the mounting bar. ­Install the combustion gases removal ducting onto the boiler. -

Fill-in the gaps between the ducting and the wall opening
with a non-fl ammable material.

Remove the plastic plugs from the boiler outlets. ­Install the protective fi lter to the heating water inlet (not part -

of delivery).
Mount isolation valves on all outlets from the boiler (not part -

of delivery).
Connect heating water, hot water and gas distribution pipes -

to the isolation valves.
Install lever for topping up water into the heating system. ­Fill boiler with water. ­Perform check of tightness of all connections. -

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INSTALATION

Hydraulic connection6

The boiler connection terminals may not be placed under
undue pressure from the piping system for the CH circuit, the
HW circuit or from the gas intake. This assumes a precise
observance of the dimensions of the endings of all connecting
pipes, with regard to height as well as distance from walls and
separation distances of the interconnected individual intakes
and outlets.

The heating system circuit should be connected to the boiler in
such a way that during repairs to the boiler the heating water
need be released only from the boiler.

1

2

3

4

5

6

Legend
1 gas valve
2 safety valve
3 plate to plate heat exchanger - 12 plates
4 auto air vent
5 WILO AC pump with two automatic speeds
6 fi lling loop

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INSTALATION

Air and exhaust lines7

1

3

4

2

5

6

Legend
1 chimney - 110 mm pre 12 kW, 125 mm pre 25 kW
2 over-fl ow safety device
3 draught diverter
4 heat exchanger
5 combustion chamber
6 burner - 13 blades

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INSTALATION

1

3
4

2

5

6

Legenda
1 fan
2 air pressure switch
3 draught diverter
4 heat exchanger
5 combustion chamber
6 burner - 13 blades

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INSTALATION

Regulations 7.1

The type MOV is designed for combustion gases to be removed
and discharged into a chimney (through a chimney inlet) with
a minimum stabilised thrust of 2 Pa. The boiler is connected to
the chimney inlet by a fl ue of a diameter corresponding to the
size of the boiler’s gas exhaust outlet. It is forbidden to place
inside the combustion gases exhaust ducting any objects which
impair the combustion gases fl ow (e.g. various types of heat
exchangers to utilise their residual heat). The combustion gases
exhaust ducting is not part of the boiler accessories.

Construction of the combustion gases exhaust ducting as well
as that of the chimney must comply with relevant requirements.
Compliance with the requirements specifi ed by these standards
will prevent undesirable phenomena from occurring, such as
excessive cooling of the combustion gases, penetration of
dampness into brickwork and fl uctuations in the chimney thrust,
and thus prevent undesirable effects on the boiler’s functioning.

The boiler takes combustion air from the space in which
it is installed. Air must be supplied in suffi cient quantity in
accordance with applicable regulations.

Venting of exhaust and drawing in of combustion air for the
MTV type is done only through designated pipes.

The level sections of the piping slope at a gradient suffi cient to
let the condensation drain towards an outside area or towards
a receptacle designed to draw off condensation. To achieve
this, the elbow joint may be gently bent away from the straight
section. The upright sections of the piping are always fi tted with
devices to draw off condensate. The devices for drawing off the
condensate are installed where possible close to the passage
where the exhaust exits the boiler. Breakdowns caused by
leaking condensate are not covered by the boiler warranty.

Description exhausting kits7.2

Methods of air and fl ue gas ducting 7.2.1
(according to STN EN 483) and permitted
piping lengths

If not described otherwise for the individual following methods
of placing coaxial pipe routes and their drainages, the piping
lengths (from connection at the boiler to the drainage) can be
set as in the following cases.

Note: One Em is considered as either a 1 m direct section or
one 90° joint.

Caution: If the lengths described for individual types are
exceeded, the exhaust diffuser (orifi ce) must be removed from
the ventilator drain.

The following methods of air intake and exhaust venting are
recommended for the boiler:

The C7.2.2

12

method (MTV)

Level routes and level venting into an open area.
Length of fume ducting (23 MTV):

60 / 100: min. 0.3 m (with one 90° joint), max. 3 m (with one ­90° joint).If the total fume ducting length is more than 0.5 m,
the diffuser with a diameter of 39 mm must be removed.

80 / 125: min. 0.5 m (with one 90° joint), max. 9 m (with one ­90° joint).If the total fume ducting length is more than 1 m,
the diffuser with a diameter of 39 mm must be removed.

An example of a level coaxial pipe route: version C

12

(complies

with STN EN 483)

The C7.2.3

32

method (MTV)

Vertical routes and vertical venting into an open space.
Length of fume ducting (23 MTV):

60 / 100: min. 1 m (with one 90° joint), max. 4 m (with one ­90° joint). If the total fume ducting length is more than 1.5 m,
the diffuser with a diameter of 39 mm must be removed.

80 / 125: min. 1 m (with one 90° joint), max. 10 m (with one ­90° joint). If the total fume ducting length is more than 1.5 m,
the diffuser with a diameter of 39 mm must be removed.

An example of a vertical coaxial pipe route: version C

32

(complies with STN EN 483)

The C7.2.4

42

method (MTV)

Connecting to a double shared chimney.
Double piping from independent boilers (independent routes)

can feed into shared chimneys; the transport capacity of the
chimney is judged according to the manufacturer’s data on the
chimney. If the pipes are set into the chimney in two directions
and vertically aligned, there must be a vertical separation
between the outlets of at least 0.45 m. Where two outlets vent
towards each other, they must be separated by a minimum
vertical distance of 0.6 m. The exhaust piping into the shared

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INSTALATION

double chimney never has terminal elements — the same as
with pipes that vent into open areas!

Both components of the route — external (air) and internal
(exhaust gas) — must safely feed into the relevant chimney
duct but not protrude so deeply that they create blockages in
the exhaust or air ducts.

Length of fume ducting (23 MTV):

60 / 100: min. 0.3 m (with one 90° joint), max. 3 m (with one ­90° joint). If the total fume ducting length is more than 0.5 m,
the diffuser with a diameter of 39 mm must be removed.

The C7.2.5

52

method (MTV)

Separate double piping and venting into different areas (with
different parameters, mainly of pressure)

For venting exhaust and bringing in air for combustion, separate
piping may be used. The separate piping may not be routed on
opposing walls of the building.

Length of fume ducting (23 MTV):

80 / 80: min. 2 x 0.5 m, max. 2 x 18 m. If the total fume ­ducting length is more than 2 x 2 m, the diffuser with a
diameter of 39 mm must be removed.

The C7.2.6

82

method (MTV)

Using piping in cases where the air is drawn in from an open
area and the exhaust vents into a shared chimney.

Length of fume ducting (23 MTV):

80 / 80: min. 2 x 0.5 m, max. 2 x 18 m. If the total fume ­ducting length is more than 2 x 2 m, the diffuser with a
diameter of 39 mm must be removed.

Air may in the same way be brought in from an open space (or
a space well supplied with air) and exhaust extracted into a
common chimney (or, again, into a space with common venting
of exhaust gases). The special case of B22 also belongs in this
category. (See following text.)

The B7.2.7

22

method (MTV)

Extraction of exhaust (also in separate piping) into an open
area and intake of combustion air from an internal space in the
building in close proximity to the boiler (in coaxial piping with the
perforation of its outer part).

Length of fume ducting (23 MTV):

80 / 80: min. 2 m, max. 2 m. The diffuser must be removed. -

When drawing in air for combustion from internal areas of the
building, a suffi cient quantity of that air must be ensured. No
other appliance may be connected to the exhaust duct (whether
chimney or pipe), and when drawing in air at least 1.2 m3 of air/
hour per kW of boiler output must be available.

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INSTALATION

Piping gradient7.2.8

The layout of the piping must permit a down-gradient of the
exhaust piping towards the boiler at a nominal gradient of 3
percent. A device for drawing off condensate must be placed on
the piping as close as possible to the boiler.

Safety measures7.2.9

The distance of fl ammable materials from the exhaust
component of the separate piping must be enough to ensure
that the temperature at the surface of these materials is no
higher than 80°C.

Exhaust may not be vented in areas:

where a danger of explosion is present (as set forth in STN •
33 2320)

that are interior areas of a building (lofts, halls, stairwells •
etc.)

closeable, i.e. passages or gateways etc.•
that descend underground (even if these remain open to •

the surroundings and free of obstructions), e.g. tunnels,
underpasses etc.

These basic injunctions for venting exhaust must always take
adequate account of where independent air intakes are sited.

Wall apertures for coaxial piping for drawing in air and venting
exhaust are cut to the appropriate size (approx. 120 to 150
mm) and sealed (with building construction methods) following
the installation. Non-fl ammable materials (with Degree A
of fl ammability according to STN 73 0823) must be used
for sealing, e.g., masonry mortar, plaster etc. Openings in
combustible walls or roofs must be made according to the fi rst
section of this part.

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INSTALATION

Connecting the boiler to the electricity 8
supply

e

Incorrect installation can cause electric shock
or damage to equipment. Electrical connection
device can be performed only by a qualifi ed
technician.

The device must be plugged directly into an accessible
electrical plugs fi tted involved.

External leadership must be grounded with the right polarity and
in accordance with current standards.

The manufacturer assumes no liability for personal injury or
other damage caused by improper grounding of equipment.
This applies also non-applicable standards.

Hooking up the boiler to the mains voltage is done through a
triple-wire plug with a fl exible cord. The socket for connecting
the boiler to the electrical network must comply with STN 33

2000-4-46. It must always have the protective ground (pin)
reliably connected with the PE or PEN wire (a combination
of green and yellow colours). The boiler must always be
connected through its main to the ground and must always be
installed in a way that allows access to the socket and plug.
The use of a variety of “adaptors”, “extension cords” etc. is not
permitted.

Caution: The preparation of plugs and sockets as well as room
regulator connections that extend into the interior electrical
components of the boiler must under all circumstances be
carried only by a person with electrotechnical qualifi cations as
set forth in Decree No. 50/1978 Coll. In the same way, servicing
of the electrotechnical components may be carried out only by
a person with the above-mentioned professional qualifi cations.
Before servicing the electrotechnical elements the boiler must
be disconnected from the current by pulling the mains lead from
the socket!

The main body of the boiler is protected by a tube fuse (T 2A /
250 V), which is located on the boiler control board.

Entrance to BMU8.1

BMU is accessible when the front cover of the boiler and
unloading ebox. Bellow the back cover is BMU, the composition
of which it is possible to select the BMU.

1

Legenda
1 plastic clips

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INSTALATION

BMU8.2

1

Legend
1 Removable connector for 24V & Ebus room thermostats & outdoor sensor

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INSTALATION

Boiler wiring diagram8.3

1102113124135146157168179

18

1059483726

1

12
34

10987654321

1920 18 17 16 15 14 13 12 11

M

D TT

NTC

Ebus

24 V

X2

X30

X90

X32

X40

X51

X31

X25

X21

X13

230 VAC

LN

X12

X101

X15

FUS

X14

X20

X16

X17

X17

123

14253

6

10987654321

1920 18 17 16 15 14 13 12 11

423

1

3421

X2

12 1 11 1

1102113124135146157168179

18

X20

12
34

1

12

1

X21

18 17 16 15

2

1

3

4

5

9

7

6

8

10

11

12

14

X11

13

Legend
1 Regulation connector
2 Exalink connector
3 NTC solar connector
4 Alternative 24V connection
5 User interface
6 Hydraulic connector
7 Gas valve
8 Ventilator
9 Fuse
10 230 V connection
11 Pump
12 Electrodes
13 NTC CH water intake temperature sensor
14 NTC CH return water temperature sensor
15 Thermal fuse
16 NTC CH fl ow sensor
17 NTC HW fl ow sensor
18 3–way motor valve
19 CH pressure sensor

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INSTALATION

External accessories8.4

For regulating the boiler from a room regulator, only a regulator
that has a no-voltage input, i.e. that does not send any external
voltage into the boiler, may be used.

Load carrying capacity of the regulator with a relay switch is
24V / 0.1 A.

The room regulator must be connected to the boiler with a
two-wire plug. The recommended cross-section for the room
regulator connection (copper lead) is 1.5 mm

2

.

Leads for connecting the room regulator may not be coaxial
with the mains voltage leads.

The terminal for hooking up the room regulator with the relay
switch is supplied by the manufacturer with a connector and is
located in the frame of the boiler control panel.

Room regulators may be connected to the GEPARD boiler via
eBUS communication. For this type of equipment, however, we
recommend installing only Protherm Thermolink B, Thermolink
P or Thermolink RC regulators. Only in this way can the
manufacturer guarantee the optimal functioning of the boiler.

The room regulator leads are connected to the terminal board of
the boiler.

By means of the above-mentioned regulators the isothermal
regulation function can be activated. All settings for isothermal
curves are carried out with the aid of the room regulator.

Note: To activate the isothermal regulation the external
temperature sensor must be installed. The external sensor lead
is connected to the terminal board of the boiler.

The external sensor is placed on the coldest wall of the property
(most often the northern wall).

Caution: The room regulator lead and the external sensor may
not be coaxial with power cables (230 V current etc.).

Putting into operation 9

Filling the heating system9.1

Filling of water to the heating system using an external valve
which is recommended when installing a heating system
located on the distribution of heating water.

Note: In order to meet the heating system use fi lling loop, which
is located in the boiler. This only serves to replenish the water
system at a pressure drop heating water.

Re-fi lling of the boiler9.2

Bringing water into the heating system (small quantities only)
can be done via the inlet valve on the boiler.

When fi lling the boiler the following conditions must be
observed:

The water pressure on entry into the boiler must always be ­higher than the water pressure in the CH circuit.

Water is drawn into the boiler strictly in a cold state (CH ­temperature in the boiler up to 30°C).

The recommended water pressure in the cold boiler (up to ­30°C) is between 1 – 2 bar.

The pressure in the expansion tank is checked and if ­necessary adjusted to the correct value (see technical
parameters on end of this manual).

First ignition9.3

Boiler switch on / off button on the control panel. When you turn
to run the internal test control panel, then the boiler starts to
respond to the requirements of the system. Before starting the
fi rst check whether the gas inlet is open, all inputs and outputs
of the heating system and whether it is in a desired system
pressure.

Testing the heating system9.4

By activating these various test modes, you can enable special
functions on the appliance.

Press the on/off button to switch off the appliance.•
While keeping the button MODE pressed for more than 5 •

seconds, press the on/off button.
The screen displays the fi rst test mode "P01".

Press button + or - to choose the test mode that you wish to •
launch.

Press MODE to launch the test mode.•
The number of the "PX" test mode and !On" fl ash on the
screen.

The test mode will be automatically stop after 15 minutes.•
When you have fi nished, press the On/Off button to exit the •

test modes.

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INSTALATION

Code Parameter Description

P.01

Forcing the adjustable
power burner when
heating

The appliance functions at power
adjustable from Pmin. to 100% by
using buttons + or - on the right
side after successful ignition.

P.02

Forcing the burner to
heating ignition power

The appliance functions at ignition
power after successful ignition.

P.03

Forcing the burner to
heating Pmax

The appliance functions at its
maximum power after successful
ignition.

P.05 Filling the appliance

The 3 way valve is in the central
position, the pump and the burner
stop so that the appliance can be
fi lled.

P.06 Venting the installation

The function is activated for a
period of 5 minutes on the heating
circuit. Make sure that the air vent
is open.

P.07 Venting the appliance

The function is activated for a
period of 5 minutes on the short
circuit. Make sure that the air vent
is open.

Specifi c settings10

Status of the appliance10.1

Press button "-" for more 3 seconds to learn the current state •
of functioning of the appliance. The screen displays the state
of the appliance "S.XX".

Press button MODE for more than 3 seconds to exit this •
menu.

Status Heating mode

S.00 No request for heating
S.01 Pre-run fan
S.02 Pre- run pump
S.03 Ignition
S.04 Burner lit
S.05 Post run pump/fan
S.06 Post run fan
S.07 Post run pump
S.08 Time delay anti short-cycles after heating

Status Domestic hot water heating

S.10 Request for domestic hot water
S.11 Pre-run fan
S.13 Ignition
S.14 Burner lit
S.15 Post run pump/fan
S.16 Post run fan
S.17 Post run pump

Status Specifi c messages

S.30

Default status, no request for heating or domestic water. If
an EBUS controller is connected to the boiler, check that
a wiring link is present on terminals 3 and 4 of the boiler´s
main board.

S.31 "Hot water only" mode

S.32

Control cycle: the speed of the fan in the function phase

is outside tolerance.
S.34 "Frost protection" mode
S.39 Underfl oor heating contact open
S.40 Heating mode activated
S.41 Water pressure too high

S.53

Waiting cycle: temperature differantial between heating

fl ow and return is too high. If ∆T > 30, forcing to Pmin.
S.54

Waiting cycle: lack of water in the installation/temperature

rise between heating fl ow and return is too high.
S.96 Test temperature sensor for heating return

S.98

Test temperature sensors for heating fl ow and return, or

the appliance has a fault.

Technical settings and a list of equipment 10.2
parameters

Access to the installation and service mode is made as follows:
Press and hold the MODE button pressed until the symbol

appears on the display "0". Use "+" and "-" to set to display
the number "96" for the setup mode or the number "35" for
the service mode and confi rm the MODE button. Now we
are in mode, the display is shown of the parameter code and
the parameter value. Use "+" and "-" on the control panel we
choose the parameter and using the buttons "+" and "-" on
the control panel changing the value of the parameter. When
changing the value of the parameter number will display fl ash,
set the desired value, and wait until the value stops fl ashing.
This is automatically set to the value stored in memory.

The service climb mode, press and hold "MODE" to display the
basic display. Where a service mode for some time not doing
anything, the boiler itself automatically terminates service mode.

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INSTALATION

Code Description Manufacturing

setting

Minimum
value

Maximum
value

00 Heating part load, adjustable values in kW following power range
01 Central Heating Pump Overrun (min) 5 2 60
02 Maximum off period after central heating operation (min) 20 2 60
03 Domestic hot water fl ow temperature (°C)
04 Tank or micro-accumulation temperature (°C)

Only displayed when tank NTC connected

09 Nominal fl ow temperature from external eBus control (°C)

Only displayed if an eBus control is connected

10 Internal pump:

1 = on
0 = off

11 External pump:

1 = on
0 = off

12 Cylinder storage pump:

1 = on
0 = off

13 Circulation pump:

1…100 = on
0 = off

16 24V room thermostat

0 = open (no heating),

1 = closed (heating mode)
17 Type of temperature regulation: fl ow / return 0 0 1
18 Pump mode (post-run)

0= with burner

1= with RT

2= winter mode

102

19 Function mode of 2 speed pump mode setting:

0: burner mode = stage 2,

pre/post-run = stage 1;

1: CH + post-run = stage 1, DHW = stage 2,

2: automatic in CH, pre/post-run = stage 1,

DHW : stage 2

3: always stage 2

details see functional description

203

20 Maximum set value of the DHW setpoint (°C) 60 50 60
21 Warmstart function enabled and allowed

1 warmstart function enabled and allowed

0 warmstart function disabled or not allowed

01

22 DHW demand active (tank or tapping) :

1=on

0=off
23 Release of central heating

1 = CH release

0 = CH not released
24 air pressure switch

1: closed

0: open
25 Tank heating state

1=tank heating enable

0=tank heating disabled
27 Switching option relay 1 1 1 10
28 Switching option relay 2 2 1 10
31 Filling loop mode

0. manual

1. Semi-automatic

2. Full automatic

002

35 Position setpoint of the TWV

100 = DHW

0 = heating

40 = middle position

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INSTALATION

Code Description Manufacturing

setting

Minimum
value

Maximum
value

36 DHW waterfl ow sensor (l/min)
40 Flow temperature (°C)
41 Return temperature (°C)
43 Heating curve

Displayed only when outdoor T° sensor connected and no ebus control (sending a valid

CH setpoint) connected

1,2 0,2 4

44 Digitalized ionisation voltage (V)
45 Heating curve - base point adjustment

Displayed only when outdoor T° sensor connected and no ebus control (sending a valid

CH setpoint) connected

20 15 25

47 Outside temperature (°C)

Displayed only when outdoor T° sensor connected to the BMU
52 Offset for minimum steppermotor position (1 means 2 steps for motor with 480 steps) 45 0 99
53 Offset for maximum steppermotor position (1 means 2 steps for motor with 480 steps) -25 -99 0
62 Night/Day offset 0030
64 Average ignition time (s)
65 Maximum ignition time (s)
66 Disable warmstart function

0 : Warmstart disabled

1 : Warmstart enabled

101

67 Remaining burner blocking time (min)
68 Number of unsuccessfull ignitions at fi rst attempt
69 Number of unsuccessfull ignitions at second attempt
70 Three way valve working mode

0 : TWV in normal mode (heating position for heating and DHW position for DHW)

1 : TWV in permanent middle position

2 : TWV in permanent heating position

Only displayed and adjustable on system boilers

002

71 Maximum nominal value of fl ow temperature (°C) 75 45 80
77 Part load hot water in (kW)

Only displayed and adjustable on system boilers

závisí od výkonového rozsahu kotla

80 Operating hours in heating mode (h)
81 Operating hours in domestic hot water mode (h)
82 Number of burner starts in heating mode
83 Number of burner starts in DHW mode
85 Minimum power of the appliance (kW) závisí od výkonového rozsahu kotla
90 Digital control recognized:

1 = yes

0 = no
93 Adjustment of Device Specifi c Number

G20

0: 12 KOO

1: 12 KTO

2: 25 KOO

3: 25 KOV

4: 25 KTO

5: 25 KTV

6: 30 KTV

G31

1: 12 KTO

4: 25 KTO

5: 25 KTV

6: 30 KTV

7: 12 KOO

8: 25 KOO

9: 25 KOV

09

94 Reset fault codes list 0 0 1
95 Software Version of PeBus participiants

1. BMU

2. AI

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INSTALATION

Code Description Manufacturing

setting

Minimum
value

Maximum
value

96 Reset adjustable parameters to the factory settings 0 0 1

Re-check and restart10.3

After installing equipment, equipment check.•
Start the installation to check that the settings are correct •

and make sure equipment is working safely.

Informations for user11

On completion of installation the installer must:

user to explain how the equipment functions and safety ­devices, and if necessary running equipment and bring the
user to answer questions;

user-submitted all necessary documentation; ­complete documents, where necessary; ­alert the user of the measures necessary to prevent damage -

to the system, equipment and buildings;
user recalled that each year the device service. -

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MAINTENANCE

MAINTENANCE

Search and trouble-shooting 12

Diagnosing faults12.1

When displaying an error code the letter F will fl ash on the
display together with the relevant error code.

During the normal course of operation of the device the ten
most recent error alarms can be displayed by simultaneously
pressing for seven seconds both keys for setting the CH
temperature.

Fault codes12.2

i

Faults described in this chapter shall be removed by
a qualifi ed technician and if necessary after-sales
service.

Code Description

F0 Failure of NTC CH intake water temperature sensor
F1 Failure of NTC CH water return temperature sensor
F2 Failure of NTC HW sensor
F3 Failure of NTC accumulator
F4 Disruption of NTC collector
F5 Failure of air supply sensor
F6 Failure of draw sensor
F7 Disruption of NTC HW return from solar sensor
F8 Failure of NTC accumulator sensor ground
F9 Failure of NTC exhaust hood sensor
F10 Short circuit in NTC CH intake water temperature sensor
F11 Short circuit in NTC CH return water temperature sensor

F12

Short circuit in NTC accumulator sensor ground

Short circuit in NTC CH sensor
F13 Short circuit in NTC accumulator sensor
F14 Short circuit in NTC collector sensor
F15 Short circuit in air supply sensor
F16 Short circuit in draw sensor
F17 Short circuit in NTC HW return from solar sensor
F18 Short circuit in NTC accumulator sensor ground
F19 Short circuit in NTC exhaust hood sensor
F20 Safe temperature limiter is active: Cut off due to overheating
F21 Boiler locked out – threshold values exceeded
F22 Low water in boiler – pump locked out

F23

Low water level: high temperature difference between outlet

and inlet NTC
F24 Low water level: rapid temperature rise
F25 High fl ow temperature
F26 Incorrect fl ow value from stepmotor gas valve

F27

Flame sensing error – ionisation signal contrary to closed

gas valve
F28 Failure to light burner at fi rst attempt
F29 Loss of fl ame during burner operation

Code Description

F30 Failure of lock-out sensor
F31 Short circuit in lock-out sensor

F32

Anti-freeze protection valve is active: ventilator rotations are
outside tolerance limits

F33

Anti-freeze protection valve is active: Pressure sensor is not
on

Pressure sensor is not off (when the ventilator is not running)
F35 Flue system error
F36 Draft detected (chimney version only)
F37 Ventilator rpms during operation are outside tolerance limits
F38 Measured frequency limit is outside tolerance limits
F39 Error in boiler auto-detection
F41 Incorrect gas regulation
F42 Problem with coding resistor
F43 Incorrect value for boiler variant
F49 Low eBus voltage
F55 Error in CO sensor
F58 No feedback from preheater
F60 Error gas valve +
F61 Error gas valve ­F62 Error – gas valve turned off
F63 EEPROM error
F64 ADC error
F65 High electronics temperature
F66 Error in IIC collectors

F67

Flame signal from ASIC is unreliable

Detected fl ame input signal is outside range (0 or 5V)
F70 Incorrect DSN
F71 Flow sensor permanent failure

F72

Lengthy interval between fl ow sensor and NTC CH return

water sensor
F73 CH pressure sensor not connected or short circuited
F74 CH pressure sensor has electrical fault (or damaged cable)

F75

Permanent failure CH pressure sensor. No rise in pressure

detected following pump start
F76 Thermal fuse failure in primary exchanger
F80 Error in SHE entry sensor
F81 Error in charger pump
F82 Error in anode tester
F90 Not connected to APC module
F91 Error in APC module sensor

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MAINTENANCE

Gas conversion13

The Panther boilers are in their basic versions designed to use
natural gas as fuel. The modifi cations required to switch to a
different fuel must be carried out by an authorised technician
with a valid manufacturer’s certifi cate.

For conversion to propane use the conversion kit for switching
from natural gas to propane gas. The kit contains all necessary
parts and instructions on how to perform the conversion.

Settings13.1

setting is performed electronically by setting on the control •
panel

pressure is measured using the U-manometer (against •
atmosphere) or other appropriate pressure gauge

before commencing setting, release the closing screw of the •
measuring point of outlet gas pressure (1) and slide on the
hose of the U-manometer

1

in the following steps proceed precisely according to the •
service guide in the chapter “Setting minimum and maximum
boiler output”, which is used upon exchange of gas valve

when setting minimum and maximum pressure use the •
relevant values (see table)

After completing setting the boiler shuts down, the hose of
the U-manometer is removed and the closing screw of the
measuring point is tightened as appropriate. The boiler is
started up and an air tightness test of the measuring points on
the gas armature is performed.

Important:

during conversion the original parts supplied by the •
manufacturer or person authorised thereby are used

setting of all elements is secured (e.g. by drop of paint)•
type of fuel for which the boiler is heretofore designated is -

indicated in appropriate manner directly on boiler
conversion, date and person performing conversion is -

recorded in the accompanying technical documentation of
the boiler

23 kW

G20

20 mbar

G31

37 mbar

MTV MOV MTV MOV

Jet diameter (mm) 1,2 1,2 0,77 0,73
Pmin (mbar) 2,5 2,2 5,2 5,2
Pmin (mm H2O) 25,49 22,43 53 53
Pmax (mbar) 13,0 12,0 28,0 29,6
Pmax (mm H

2

O) 132,6 122,4 288,5 301,8

Shut down boiler using main switch.

Press (menu) button and also press the main switch of the •
boiler.

Hold down the (menu) button. A point fl ashes on the display•
The parameter P00 OFF will appear on the display within •

approx. 10 seconds
Select the parameter • P01 using the (+) or (-) button
Use the MODE button to confi rm the data. After a brief period •

the boiler burns at minimum output.
Press MODE and hold for 10 seconds, with button (+) go to •

service mode 35, confi rm with MODE, then with button (+) go
to point 52

The number 50 appears on the boiler display (possible •
setting 0 – 99)

Attach U-manometer and check that the minimum gas •
pressure value corresponds to the prescribed value stated in
the table.

In the case of deviation change the minimum boiler output •
using the (+) and (–) buttons. Proceed in short steps
and always wait for the level of the water column by the
U-manometer to stabilise. The measured value most be
identical to the value stated in the table.

After setting fi nished, hold MODE for 10 seconds to confi rm.•
The P01 appears on display. Using buttons (+) or (-) set •

value 100 (maximum power). After a brief period the boiler
burns at minimum output.

Press MODE and hold for 10 seconds, with button (+) go to •
service mode 35, confi rm with MODE, then with button (+) go
to point 53

The number 20 appears on the boiler display (possible •
setting 0 – 99)

Attach U-manometer and check that the maximum gas •
pressure value corresponds to the prescribed value stated in
the table.

In the case of deviation change the maximum boiler output •
using the (+) and (–) buttons. Proceed in short steps
and always wait for the level of the water column by the
U-manometer to stabilise. The measured value most be
identical to the value stated in the table.

After setting fi nished, hold MODE for 10 seconds to confi rm •
and press MODE to fi nish the program mode.

Press the RESET button to slip to normal mode.•

Important: The value stated on the display does not represent
the value in mm/H2O.

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MAINTENANCE

Discharging water 14

The outlet valve is designated primarily for lowering the water
pressure in the boiler during repairs. Only a partial discharge of
water from the boiler is possible through this outlet.

A complete draining of water from only the boiler or the heating
circuit and repeat fi lling must be carried out at inlet/outlet valves
at appropriate locations in the heating circuit.

Discharging and fi lling of water into the heating circuit and the
subsequent operations (air venting, regulating the expansion
tank) are not covered by the boiler warranty.

If the HW in the boiler and piping is threatened with freezing,
appropriate measures must be taken to avoid this entirely.

Note: The release valve is located on the right side of the boiler
at the pump.

Heating system14.1

Release of water from the heating circuit follow through the
discharge outlet, which should be placed on the outside of
the boiler heating system. Valve on the boiler is used only for
removing water from the boiler.

Servising 15

Serviced boiler shall only person with due authorization and
properly trained equipment manufacturer. Serviced should be
carried out at regular intervals in accordance with the warranty
conditions.

Function check15.1

After putting into operation, it is necessary to carry out a
functional check of the boiler and heating system throughout, as
well as the external devices connected to the boiler.

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MAINTENANCE

Replacement parts 16

Burner16.1

Fan16.2

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MAINTENANCE

Air pressure switch16.3

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MAINTENANCE

Over - fl ow safety device16.4

Return heating NTC sensor16.5

Flow heating NTC sensor16.6

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MAINTENANCE

Pressure sensor16.7

Ignition transformator16.8

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MAINTENANCE

Plate to plate exchanger16.9

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MAINTENANCE

Gas valve16.10

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MAINTENANCE

DHW fl ow sensor16.11

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MAINTENANCE

Expansion vessel16.12

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MAINTENANCE

Spare parts17

To ensure safe operation and long life product, you must use
only original parts from the manufacturer.

i

This product has the CE marking of conformity. Use
only new original parts from the manufacturer.

Check the spare parts installed in the correct position and •
in the right direction. After installation of the spare parts or
servicing the equipment must be tested for safe operation.

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MAINTENANCE

Techniccal parameters18

Description Units GEPARD 23 MOV

Gas category II2H3P
Distribution B11BS
Ignition electronic

Power / fuel natural gas propane

Maximum thermal consumption kW 25,8
Minimum thermal consumption kW 10,4
Maximum thermal output kW 23,3
Minimum thermal output kW 9,0
Effi ciency % 89,9
Maximum gas consumption m

3

/h 2,73

Minimum gas consumption m

3

/h 1,10
Maximum gas consumption kg/h 2,64
Minimum gas consumption kg/h 1,13
NO

x

classifi cation 3

Gas pressure

Inlet pressure mbar 20 37
Membrane diameter mm 5,8 4,4
Maximum pressure in discharge nozzles mbar 11,4 27,8
Minimum pressure in discharge nozzles mbar 2,2 5,0
Discharge nozzle diameter mm 1,20 0,73

Heating

Maximum working pressure bar 3
Minimum working pressure bar 0,5
Recommended operating pressure bar 1 - 2
Temperature range °C 38 - 80
Expansion tank l 5
Maximum pressure in the expansion tank mbar 3

Hot water

Maximum pressure bar 10
Minimum pressure bar 0,5
Minimum HW fl ow l/min 1,7
Quantity of HW drawn (at ∆T 30°C) l/min 11,1
Temperature range °C 38 - 60

Electrical data

Voltage / frequency V/Hz 230/50
Consumption W 92
Electrical casings IPX4D
Current A 0,4

Exhaust venting method chimney

Fume ducting diameter mm 126
Exhaust gas temperature °C 110
Quantity of exhaust gas produced g/s 21,0
Noise dB < 50

Dimensions: height / width / depth mm 740 / 410 / 298
Weight without water kg 31

P2_GEPARD_installer manual_ work basis_EN_02 - 03/10 - protherm

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MAINTENANCE

Description Units GEPARD 23 MTV

Gas category II2H3P
Distribution C12, C32, C42, C52, C82, B22
Ignition electronic

Power / fuel natural gas propane

Maximum thermal consumption kW 25,0
Minimum thermal consumption kW 10,7
Maximum thermal output kW 23,3
Minimum thermal output kW 8,5
Effi ciency % 93
Maximum gas consumption m

3

/h 2,64
Minimum gas consumption m

3

/h 1,13
Maximum gas consumption kg/h 1,9
Minimum gas consumption kg/h 0,8
NO

x

classifi cation 3

Gas pressure

Inlet pressure mbar 20 37
Membrane diameter mm 5,95 4,20
Maximum pressure in discharge nozzles mbar 12,2 28,1
Minimum pressure in discharge nozzles mbar 2,4 5,1
Discharge nozzle diameter mm 1,20 0,73

Heating

Maximum working pressure bar 3
Minimum working pressure bar 0,5
Recommended operating pressure bar 1 - 2
Temperature range °C 38 - 80
Expansion tank l 5
Maximum pressure in the expansion tank mbar 3

Hot water

Maximum pressure bar 10
Minimum pressure bar 0,5
Minimum HW fl ow l/min 1,7
Quantity of HW drawn (at ∆T 30°C) l/min 11,1
Temperature range °C 38 - 60

Electrical data

Voltage / frequency V/Hz 230/50
Consumption W 147
Electrical casings IPX4D
Current A 0,4

Exhaust venting method turbo

Fume ducting diameter mm 60 / 100 , 80 / 125 , 80 / 80
Exhaust gas temperature °C 122
Quantity of exhaust gas produced g/s 13,4
Noise dB < 50

Dimensions: height / width / depth mm 740 / 410 / 298
Weight without water kg 34

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P2_GEPARD_installer manual_ work basis_EN_02 - 03/10

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