ApenGroup PK Series Technical manual

1
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
EN Use, Installation and Maintenance Manual
PK series FLOOR STANDING WARM AIR HEATER with NEW CPU
Capacities from 100 to 550 kW
E󰀩ciency up to 101%
Reduction of
Thermal Stratication
ErP
2021
Compliant
EU/2016/2281
NEW VERSION
CPU G26800
TRANSLATION OF ORIGINAL Manual
For Indoor and Outdoor Use

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 2
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
VER. 01.2020
CODE SERIAL NUMBER
Dichiarazione di Conformità
Statement of Compliance
APEN GROUP S.p.A.
20042 Pessano con Bornago (MI)
Via Isonzo, 1
Tel [phone] r.a.
Fax [phone]
Internet: http://www.apengroup.com
Il presente documento dichiara che la macchina:
With this document we declare that the unit:
Modello:
Model:
Generatore a basamento PK PKA-N, PKA-K, PKA-R, PKE-N, PKE-K, PKE-R
Floor Standing Heater PK PKA-N, PKA-K, PKA-R, PKE-N, PKE-K, PKE-R
è stata progettata e costruita in conformità con le disposizioni delle Direttive Comunitarie:
has been designed and manufactured in compliance with the prescriptions of the following EC Directives:
•Regolamento Apparecchi a Gas 2016/426/UE
Gas Appliance Regulation 2016/426/UE
•Direttiva Bassa Tensione 2014/35/UE
Low Voltage Directive 2014/35/UE
•Direttiva Compatibilità elettromagnetica 2014/30/UE
Electromagnetic Compatibility Directive 2014/30/UE
•Regolamento ErP 2016/2281/UE
ErP Regulation 2016/2281/UE
•Direttiva ROHS II 2011/65/UE e ROHS III 2015/863/UE
ROHS II 2011/65/UE and ROHS III 2015/863/UE Directives
Valido solo per gli accoppiamenti generatore-bruciatore indicati dal costruttore (vedere manuale)
Valid only for the heater-burner matching specified by the manufacturer (see manual)
è stata progettata e costruita in conformità con le norme:
has been designed and manufactured in compliance with the standards:
•EN17082:2020
•2017/C 229/01
•EN60335-1
•EN60335-2-102
Organismo Notificato:
Notified body:
Kiwa Cermet Italia S.p.A
0476
PIN 0476CT2224
La presente dichiarazione di conformità è rilasciata sotto la responsabilità esclusiva del fabbricante
This declaration of conformity is issued under the sole responsibility of the manufacturer
Pessano con Bornago
29/03/2022 Apen Group S.p.A.
Un Amministratore
Mariagiovanna Rigamonti

3
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
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code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 4
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
INDEX
SECTION 1. GENERAL WARNINGS.........................................................................................................6
SECTION 2. SAFETY-RELATED WARNINGS.......................................................................................6
2.1 Fuel.................................................................................................................................6
2.2 Gas Leaks.......................................................................................................................6
2.3 Power Supply..................................................................................................................7
2.4 Use .................................................................................................................................7
2.5 Air Vents .........................................................................................................................7
2.6 Maintenance...................................................................................................................7
2.7 Transport and Handling ..................................................................................................8
2.8 Packaging.......................................................................................................................8
2.9 Unpacking.......................................................................................................................9
2.10 Disposal and demolition..................................................................................................9
2.11 How to Identify the Heater..............................................................................................10
SECTION 3. TECHNICAL FEATURES......................................................................................................11
3.1 Main Components...........................................................................................................11
3.2 Choosing the Heater.......................................................................................................12
 3.3 DiagramsofOutputHeat/E󰀩ciencyRatioofPK-NHeaters ...........................................12
 3.4 DiagramsofOutputHeat/E󰀩ciencyRatioofPK-KHeaters ...........................................13
 3.5 DiagramsofOutputHeat/E󰀩ciencyRatioofPK-RHeaters ...........................................14
3.6 TECHNICAL DATA........................................................................................................15
3.7 NOISE............................................................................................................................19
 3.8 DIMENSIONSOFPKAVERTICALHEATER..............................................................20
 3.9 DIMENSIONSOFPKAHORIZONTALHEATER ........................................................22
3.10 DimensionsofPKEVerticalHeater ................................................................................24
3.11 DimensionsofPKEHorizontalHeater............................................................................26
SECTION 4. USER INSTRUCTIONS.........................................................................................................28
4.1 Operation........................................................................................................................28
4.2 Accessories ....................................................................................................................29
4.3 Smart X ..........................................................................................................................30
SECTION 5. SERVICING INSTRUCTIONS.............................................................................................35
5.1 Operating cycle...............................................................................................................35
5.2 Interface Panel................................................................................................................35
5.3 Reset ..............................................................................................................................37
5.4 Smart X Web/Easy connection.......................................................................................37
5.5 Navigation map of LCD display menu ............................................................................38
5.6 Modulation PCB parameters...........................................................................................40
 5.7 AnalysisofLockouts-FAULTS.......................................................................................45

5
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
SECTION 6. INSTALLATION INSTRUCTIONS......................................................................................46
6.1 Where to install the Heater.............................................................................................46
6.2 Wiring to Power Supply ..................................................................................................48
6.3 Electrical Connections....................................................................................................49
6.4 Wiring the Burner............................................................................................................50
6.5 Optional Accessories ......................................................................................................51
6.6 Wiring diagrams..............................................................................................................65
6.7 Burner matching .............................................................................................................68
6.8 Gas burners....................................................................................................................69
6.9 Burner matching tables...................................................................................................69
SECTION 7. MAINTENANCE...............................................................................................70
7.1 Controls at First Start Up................................................................................................70
7.2 Routine Maintenance......................................................................................................71
7.3 Spare Part List................................................................................................................72

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 6
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
1. GENERAL CAUTIONS
This manual is an integral part of the product and must always
accompany it.
Should the equipment be sold or passed on to someone else,
alwaysmakesurethatthismanualissuppliedwiththeequipment
for future reference by the new owner and/or installer.
Themanufacturershallnotbeheldcivillyorcriminallyresponsible
for injuries to people or animals or damages to things caused
by incorrect installation, calibration and maintenance or by
failure to follow the instructions contained in this manual or by
operationscarriedoutbyunqualiedsta󰀨.
This product must be used only for the applications for which
it was designed or approved.Any other use must be regarded
ashazardous.
During the installation, operation and maintenance of the
equipment described in this manual, the user must always
strictly follow the instructions given in all the chapters of this
use and instruction manual.
The condensing warm air heater must be installed
in compliance with current regulations, according to
the manufacturer's instructions and by qualied sta󰀨,
technically specialised in the heating eld.
First ignition, conversion from one family gas
to another and maintenance must be
carriedoutonlybysuitablyqualiedsta󰀨ofTechnicalService
Centres
complying with the requisites required by the regulations in
force in their country.
Maintenance must be carried out with methods
and timing that comply with current and previous regulations
in force in the country where the equipment is to be installed.
ForItaly,the“technicalservice”tabofApenGroupwebsitewww.
apengroup.com indicates several Technical Service Centres
thattheusercancontacttohavetherststart-up,adjustment
and maintenance of the product carried out according to law
37/2007 (ex 46/90)
For more information, visit our web site
www.apengroup.com or contact Apen Group directly.
Thewarrantyconditionsarespeciedonthewarrantycerticate
supplied with this equipment.
2. SAFETY-RELATED WARNINGS
The following symbol is used in this manual to attract machine
operators’ attention.
Safety rules for users or operators of the
equipment and for nearby workers.
Please nd below the safety regulations for the installation
room and the air vents.
2.1. Fuel
The heater must be matched to a suitable burner, using the
fuel chosen for the equipment.
The burner shall use the type of fuel it is set for, which is
speciedontheequipmentplateandintechnicalspecications
in burner’s Manual.
In case of a gas burner, the pressure of the gas supplying the
burner and the combustion head must be within the range of
values indicated in the manual.
Fuel oil burners can be used only for N series non-
condensing heaters. For K and R series condensing heaters
use only gas burners.
Before starting the burner/heater, check that:
• the gas mains supply data are compatible with the data
stated on the nameplate;
• the combustion air is supplied in such a way as to avoid
even partial obstructions of the intake grille;
• the gas seal of the feeding system has been tested and
approved in compliance with the applicable standards;
• the heater burner is supplied with the same type of fuel it
has been designed for;
• the unit is correctly sized to match required ow rate,
indicatedinthe manual,andincludesallsafetyandcontrol
devices required by the law;
• the inside of the gas pipes and air distribution ducts for
ducted heaters have been thoroughly cleaned;
• thefuelowrateissuitableforthepowerrequiredbythe
heater;
• thefuelsupplypressureisbetweentherangespecied
on the nameplate.
When connecting gas supply pipe to gas valve, do not
tighten excessively in order to avoid damaging sealing
gaskets.
2.2. Gas Leaks
If you smell gas:
• donotoperateelectricalswitches,thetelephoneoranyother
objectordevicethatcancausesparksornakedames;
• immediatelyopendoorsandwindowstocreateanairow
to vent the gas out of the room;
• close the gas valves;
• call for qualied sta󰀨.
• call the Fire Brigade.
.

7
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
2.3. Power supply
Theheatermustbecorrectlyconnectedtoane󰀨ectiveearthing
system,ttedincompliancewithcurrentlegislation.
Cautions:
• Checkthee󰀩ciencyoftheearthingsystemand,ifrequired,
calloutaqualiedengineer.
• Check that the mains power supply is the same as the
power input stated on the equipment nameplate and in
this manual.
• Donotreverseliveandneutral;theheatercanbeconnected
tothemainspowersupplywithaplug-socketonlyifthe
latter does not allow live and neutral to be swapped.
• The electrical system and, more specically, the cable
section, must be suitable for the equipment maximum
power input, shown on the nameplate and in this manual.
• Do not pull electric cables and keep them away from heat
sources.
NOTE:It is compulsory to install, upstream of the power
cable, a switch with a protection (fuses or automatic),
as required by existing regulations. The switch must be
visible, accessible and placed at a distance lower than
3 metres from the control compartment; any electrical
operation (installation and maintenance) must be
performed by qualied sta󰀨.
2.4. Use
Do not allow children or inexperienced people to use any
electrically powered equipment.
The following instructions must be followed:
• do not touch the equipment with wet or damp parts of your
body and/or with bare feet;
• donotleavetheequipmentexposedtotheelements(rain,
sun etc...) unless it is adequately protected;
• do not use the gas pipes to earth electrical equipment;
• donotwettheheaterwithwaterorotheruidsunlessitis
suitably arranged for this purpose;
• do not place any object over the equipment;
• do not touch the moving parts of the heater.
Avoidcontactwithhotheatersurfaces.Suchsurfaces,generally
locatedneartheame,overheatduringoperationandremain
hot for some time after the burner has stopped.
If the equipment is not to be used for a certain period of time,
openthe main electrical switchof the thermal stationandclose
themanualvalveontheductwhichbringsthefueltotheburner.
If, instead, the equipment is not to be used any more, perform
the following operations:
• aqualiedpersonshalldisconnectthepowersupplycable
from the main switch;
• close the manual valve on the duct supplying fuel to the
burner by removing or locking the control handwheel.
2.5. Air Vents
Theroomwheregasredheaterwillbeinstalledmustbeprovided
withoneormoreairvents.Theseairventsmustbetted
• ushtotheceilingforgaseswithdensitylowerthan0.8sqm;
• ush to the oor for gases with density higher than or
equal to 0.8sqm.
Theairventsmustbettedtowallsfacingtheopenair.The
sectionsmustbesizedaccordingtotheheatoutputinstalled.
In case of doubt, measure the CO2with the burner working at
maximum output rate and the room ventilated only through the
air vents for the burner and then measure again with the door
closed. C02value must be the same under both conditions. If
in the same room there are several burners or aspirators that
can work together, measure with all the equipment working at
the same time.
Do not obstruct the room air vents, the burner fan intake
opening, any air ductwork and intake or dissipation grilles,
avoiding in this way:
• stagnationintheroomofanytoxicand/orexplosivemixture;
• smoulderingcombustion:dangerous,expensive,pollutant.
Theheater,ifnotbuiltforoutdoorinstallation,shallbesheltered
from rain, snow, and frost. If air is pulled from outdoor, the
intakemustbeprotectedbyaraindeectororsimilardevice
that prevents water from penetrating into the heater.
Theroomwheretheheater-burnergroupisinstalledmustbe
cleananddeprivedofvolatile substances that can be drawnby
the fan and obstruct burner inner hoses or combustion head.
Dust itself can be a problem if it is left depositing on fan blades,
thusreducingfanowrateandmakingcombustionpolluting.
Moreoverdustcandepositonthebackofamestabilitydisk
incombustionhead,degradingair-fuelmixingratio.
2.6. Maintenance
Before carrying out any cleaning and maintenance operations,
isolate the boiler from the mains power supply using the switch
locatedontheelectricalsystemand/orontheshut-outdevices.
If the equipment is faulty and/or incorrectly operating, switch it
o󰀨anddonotattempttorepairityourself,butcontactourlocal
Technical Service Centre.
All repairs must be carried out by using genuine spare parts.
Failuretocomplywiththeaboveinstructionscouldcompromise
the safety of the equipment and invalidate the warranty.

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 8
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
2.7. Transport and Handling
Verticalheatersaredeliveredfastenedtoapallet.Horizontal
heaters have their own base.
Unload the heater from the truck and move it to the site of
installation by using means of transport suitable for the shape
and for the weight of the load.
Any lifting and transport operations must be carried out by
skilledsta󰀨,adequatelytrainedandinformedontheworking
procedures and safety regulations. Instructions in this Manual
shall have to be followed when handling the exchanger.
KG0100C3020
Based on their weight and dimensions, heaters can be lifted
withlifttrucksorwheel-mountedcrane.
Intherstcase,useforkextensionsaslongasheaterwidth.
If a crane is to be used, insert in holes in heater base rods with
a suitable lifting resistance and install protections to prevent
crane ropes from damaging heater body.
Once the equipment is moved to the correct position, the
unpacking operation can be started.
KG0100C3022
2.8. Packaging
The unpacking operation must be carried out by using suitable
tools or safety devices where required. Recovered packaging
materials must be separated and disposed of according to
applicable regulations in the country of use.
While unpacking the unit, check that the unit and all its parts
have not been damaged during transport and match the order.
If damages have occurred or parts are found to be missing,
immediately contact the supplier.
The manufacturer is not liable for any damages occurred
during transport, handling and unloading.

9
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
2.9. Unpacking
The unpacking operation must be carried out by using suitable
tools or safety devices where required. Recovered packaging
materials must be separated and disposed of according to
applicable regulations in the country of use.
While unpacking the unit, check that the unit and all its parts
have not been damaged during transport and match the order.
If damages have occurred or parts are found to be missing,
immediately contact the supplier.
The manufacturer is not liable for any damages occurred
during transport, handling and unloading.
Packing material disposal
The packing safeguards the product from transport damages.
All the materials used are environmentally friendly and
recyclable. Please contact a specialised distributor or your
local administration for more information on waste disposal.
2.10. Dismantling and demolition
Should the machine be dismantled or demolished, the person
in charge with the operation shall proceed as follows:
Disposal of end-of-life products
This equipment is marked in compliance with
European Directive 2012/19/EU on waste
electrical and electronic equipment (WEEE).
This Directive denes the rules for collecting
and recycling waste equipments throughout the
entire territory of the European Union.
WEEE contains both pollutants (that can
negatively a󰀨ect the environment) and raw materials (that
can be reused). IT is therefore necessary to subject WEEE to
appropriate treatments, in order to remove and safely dispose
of pollutants and to extract and recycle raw materials. IT is
forbidden to dispose of WEEE as unsorted waste. These
operations facilitate recovery and recycling of the materials,
thus reducing the environmental impact.
NOTE: All materials recovered will be processed and
disposed of according to what provided for by the laws
in force in the country of use and/or according to the
standards indicated in the safety sheets of the chemicals.
INFORMATION FOR DISPOSAL valid in ITALY (Legislative
Decree 49/2014)
The PK series warm air heaters and relating accessories
are considered “professional WEEE - waste electrical and
electronic equipment”. According to the legislation in force
in Italy, professional WEEE must be sent to treatment plants
suitable for these types of waste. Please contact the Apen
Groupforend-of-lifeproductssoastoobtainalltheinformation
necessary for their correct waste disposal, which is possible
thanks to the Collective System (Union) to which the company
is associated. Please remember that product disposal without
complying with the mode described above is a violation liable
to administrative and penal sanctions.
INFORMATION FOR DISPOSAL valid abroad (EU
COUNTRIES except Italy).
The European Directive 2012/19/EC shall be implemented in
everyEU member state. There may be di󰀨erentapplication
modalities for the various member states, even in terms of
modalityforwastedisposaldependingonitstype(House-hold
or Professional WEEE). To this regard at the end of the life of
the product, we highly recommend you call the distributor or
installer so as to obtain information on the correct disposal, in
compliance with the existing laws of the installation country.

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 10
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
2.11. How to Identify the Heater
PKwarmairheaterscanbeidentiedusingtheirnameplate,
stuck on the front of the unit.
The nameplate shows all the data needed for identifying the
heater model.
WhenrequiredbyServiceCentre,read the heater model and
serial number on the nameplate, which identify your unit.
Heater Code
PK A 250 R - 2 H W
Heater
Version:
A (indoor);
E (outdoor).
Capacity
Series:
Standardnon-condensingNseries
CondensingKseries
Condensing R series
Available Head Pressure (values are shown in tables with technical features):
1-MediumHeadPressure;
2-HighHeadPressure.
Installation:
H-Horizontal
0-Vertical
Control panel implemented for accessory management

11
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3. TECHNICAL FEATURES
3.1. Main Components
Warm air heaters include:
• stainless steel heat exchanger
• frame and body
• centrifugal fan and electrical motor
• control panel and settings
• safety devices and controls
Stainless steel heat exchanger
The innovative design and large surface of the combustion
chamberandheatexchangerpipesensureoptimume󰀩ciency
and durability.
Combustionchamberanduegascollectorsarecompletely
made of AISI 441 stainless steel with low carbon content, as
wellasthesurfacesincontactwithuegases(tubebundle)in
order to ensure a high resistance to corrosion.
Tube bundle design is patented.
Characteristics of steel types used
Thefollowing table showsnaming correspondence ofthe steel
types used to manufacture our exchangers:
USA-AISI EN-No. Composition
AISI 441 1.4509 X2 CrTiNb 18
AISI310* 1,4845  X8CrNi25-21
AISI304* 1,4301  X5CrNi18-10
*Exchangersbuiltwithdi󰀨erentmaterials,suchasAISI310or
304, can be taken into account for special applications.
Heater’sheatexchangercanworkalsounderconditionsthatlead
to condensation (if equipped with the necessary accessories)
only if the relevant burner is supplied with gaseous fuel.
Frame and body
The frame consists of solid anodised aluminium bars. The
frameisassembledwithdemountablepartsallowing,inspecial
cases such as door crossing, to disassemble and reassemble
the heater completely.
Body panels are formed by:
-ontheexchangerside: riveted double-layered panels with
innergalvanizedsteelsheet,high-densityglassbreinsulation,
externalpaintedgalvanizedsteelsheet.
-onthefanside:paintedgalvanizedsteelsheetwithinnerlayer
forthermalandsoundisolation,securelyfastenedtosteelpanel.
Allpanelsfeatureagasketforaperfectsealingagainstairleaks.
Centrifugal Fan
Standardcentrifugalfansinstalledaremadeofgalvanisedsteel
sheet with forward curved blades and low noise of operation.
Fansarexedonhermeticballbearingswhichareself-aligned
and assembled inside rubber dampers. Fans for square duct
areused:drivenbymeansofxeddiameterpulleysandbelts,
three-phasemotor.
No lubrication is required on standard fans. For special fans,
checkspecicrequirements.
Operating Temperatures:
A- directdrive  -20°C +40°C
B- beltdrive  -20°C +85°C
The following fans are available on demand:
• backward curved blades
• plugfan,directlydrivenbythemotorandcontrolledthrough
inverter
• fansfortemperatureslowerthan-20°C
Electrical Motor
All motors used, except those with direct drive to the fan, have
the following characteristics:
• Supply  400Vac-Three-phase-50Hz
• Structure  B3-withterminalboardabove
• Protection rating IP55
• Isolation level cl.F
• E󰀩ciency  IE3
Formoremodel-relatedinformationonmotors,seefurtherin
this Manual.
If required, motors with the following characteristics can be
supplied:
• various supply voltages, electrical features and physical
shapes;
• motorsforlowtemperatures(below-30°C)
• motors with class H isolation
• tropicalised motors
• motors with internal heat protection, thermostat, or PT100
or PTC probe.
Control Panel and Settings
Standard control panel includes:
• oven-varnishedmetalbox
• quadripolar switch-disconnector, padlockable, with door
lock
• protection from overheat and short circuit for each motor
• fuse-protectedwiringboardtocontrolheater,safetydevices
and burner.
• for motors with power equal to or greater than 5.5 kW it is
supplied with soft starter.
The setting depends on the burner installed. The following
types are available:
• high/lowame
• modulating.
Safety Devices and Controls
All heaters are supplied with the following thermostats:
-STB Manual reset safety thermostat, inside the air ow,
whichswitcheso󰀨theburnerimmediatelyifthetemperature
is high.
-NTC NTCprobemodulatesand/orstopstheburneroperation
before the safety thermostat activates.

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 12
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.2. Choosing the Heater
Heatersareavailableincondensingversions(KandRseries
respectively)andinnon-condensingversion(Nseries).Rseries
meets the e󰀩ciency requests of the regional resolutions of
Lombardy, Emilia Romagna and Piedmont; at European level,
amatching with lowNOxburners is requiredin order to comply
with the imposed regulatory limitations.
Heatersforindoorinstallation(PKA)aresuppliedwithexchanger,
fanunitand controlpaneltobeinstalledindoororinasheltered
position; those for outdoor installation (PKE) are supplied with
exchanger, fan unit, control panel and burner casing to be
positioned outdoor.
Aworkeldhasbeentestedandapprovedforeachheater.This
eldallowstheheatertobeusedatdi󰀨erentpowerande󰀩ciency
levelsbasedone󰀨ectiveoutputpower.Whenchoosingaheater
model, the following criteria have to be taken into account: its
use (heating, process plant, or other), service type (season or
allyearlong),matchingburnertype(twostagesormodulating).
3.3. Diagrams of Output Heat/E󰀩ciency Ratio of PK-N Heaters
KG0100EG011_B

Heat output kW
E󰀩ciency%
140
190
250
87
88
89
90
91
92
93
94
95
96
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800
Rendimento %
Potenza Termica kW
Potenze - Rendimenti
550
320
420

13
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.4. Diagrams of Output Heat/E󰀩ciency Ratio of PK-K Heaters
90
92
94
96
98
100
102
104
50 100 150 200 250 300 350 400 450 500 550 600 650 700
Rendimento %
Potenza Termica kW
Potenze - Rendimenti
550
320
420
Heat output kW
E󰀩ciency%

KG0100EG008_B
90
92
94
96
98
100
102
104
0 20 40 60 80 100 120 140 160 180 200 220 240 260
Rendimento %
Potenza Termica kW
Potenze - Rendimenti
100
140
190
250

Heat output kW
E󰀩ciency%
KG0100EG006_B

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 14
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.5. Diagrams of Output Heat/E󰀩ciency Ratio of PK-R Heaters
93
94
95
96
97
98
99
100
101
102
103
0 20 40 60 80 100 120 140 160 180 200 220
Rendimento %
Potenza Termica kW
Potenze - Rendimenti
100
140 190
250
Heat output kW
E󰀩ciency%

KG0100EG009_B
Heat output kW
E󰀩ciency%

KG0100EG010_B
94
95
96
97
98
99
100
101
102
50 100 150 200 250 300 350 400 450 500 550
Rendimento %
Potenza Termica kW
Potenze - Rendimenti
550
320
420

15
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.6. Technical Data
Technical data table for PKA, PKE Series N. Technical data for PKA-N and PKE-N models are the same.
Heat Input and E󰀩ciency Data
Model PKA140N PKA190N PKA250N PKA320N PKA420N PKA550N
Type of appliance B23
EC approval 0476CT2224
NOx Class EN 17082 NOxCLASS 5**
MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX
Furnace Heat Input Pmin;
Pated,h kW 96.0 195.0 115 230.0 154.0 310.0 185.0 380.0 260 508 320 670
Useful Heat Output kW 90.2 171.0 108.1 205.9 145.0 275.0 173.9 335.9 245 450 301 592
CombustionE󰀩ciency(Hi) ηpl;
ηnom
%94.0 87.7 94.0 89.5 94.0 88.7 94.0 87.7 94.4 88.6 94.3 88.4
CombustionE󰀩ciency(Hs) % 84.7 79.0 84.7 80.6 84.7 79.9 84.7 79.0 85.0 79.8 85.0 79.6
Seasonal heating energy
efficiency ηs,h %According to the chosen burner: see table in Par. 6.9
Output efficiency ηs,flow %According to the chosen burner: see table in Par. 6.9
Chimneyloss-BurnerON(Hi) % 6.0 12.3 6.0 10.5 6.0 12.3 6.0 12.3 5.6 11.4 5.7 11.6
Chimneyloss-BurnerOFF % < 0.1 <0,1 <0,1 < 0.1 < 0.1 < 0.1
Casing losses *Fenv %1.26 1.16 1.17 1.02 1.03 0.97
Combustion Chamber pressure Pa 13 50 10 40 10 50 15 60 28 120 21 110
Combustion Chamber volume m30.37 0.52 0.76 1.06 1.55 1.79
*Heatlossofthecasingmustbeconsideredonlywhenheateris
installedoutdoororinathermalstation.Iftheheaterisinstalled
intoabuilding,heatisirradiatedinside,solossesarezero.
**With CLASS 3 GAS BURNERS according to EN676

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 16
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
Technical data table for PKA, PKE Series K. Technical data for PKA-K and PKE-K models are the same.
Heat Input and E󰀩ciency Data
Model PKA100K PKA140K PKA190K PKA250K
Type of appliance B23
EC approval 0476CT2224
NOx Class EN 17082 NOxCLASS 5**
MIN MAX MIN MAX MIN MAX MIN MAX
Furnace Heat Input Pmin;
Pated,h
kW 26.5 114 38.0 152.0 48.0 200.0 61.0 270.0
Useful Heat Output kW 27.1 105.4 38.5 140.8 48.3 182.2 61.6 248.9
CombustionE󰀩ciency(Hi) ηpl;
ηnom
%102.4 92.5 101.2 92.6 100.5 92.6 101.0 92.2
CombustionE󰀩ciency(Hs) % 92.3 83.3 91.2 83.4 90.5 83.4 91.0 83.1
Seasonal heating energy
efficiency ηs,h %According to the chosen burner: see table in Par. 6.9
Output efficiency ηs,flow %According to the chosen burner: see table in Par. 6.9
Chimneyloss-BurnerON(Hi) % 7.5 7.4 7.4 7.8
Chimneyloss-BurnerOFF % < 0.1 < 0.1 <0,1 < 0.1
Casing losses *Fenv %1.81 1.26 1.16 1.17
Combustion Chamber pressure Pa 14 100 15 140 15 130 19 175
Combustion Chamber volume m30.24 0.37 0.52 0.76
Model PKA320K PKA420K PKA550K
Type of appliance B23
EC approval 0476CT2224
NOx Class EN 17082 NOxCLASS 5**
MIN MAX MIN MAX MIN MAX
Furnace Heat Input Pmin;
Pated,h
kW 74.0 347.0 83.0 455.0 95.0 595.0
Useful Heat Output kW 74.8 319.8 83.8 419.4 96.1 549.1
CombustionE󰀩ciency(Hi) ηpl;
ηnom
%101.0 92.2 101.0 92.2 101.2 92.3
CombustionE󰀩ciency(Hs) % 91.0 83.1 91.0 83.1 91.2 83.2
Seasonal heating energy
efficiency ηs,h %Accordingtothechosenburner:seetableinPar.6.9
Output efficiency ηs,flow %Accordingtothechosenburner:seetableinPar.6.9
Chimneyloss-BurnerON(Hi) %8.7 7.8 7.7
Chimneyloss-BurnerOFF % < 0.1 < 0.1 < 0.1
Casing losses *Fenv %1.02 1.03 0.97
Combustion Chamber pressure Pa 15 225 30 275 40 365
Combustion Chamber volume m31.06 1.55 1.79
*Heatlossofthecasingmustbeconsideredonlywhenheateris
installedoutdoororinathermalstation.Iftheheaterisinstalled
intoabuilding,heatisirradiatedinside,solossesarezero
**With CLASS 3 GAS BURNERS according to EN676

17
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
Technical data table for PKA, PKE Series R. Technical data for PKA-R and PKE-R models are the same.
Heat Input and E󰀩ciency Data
Model PKA100R PKA140R PKA190R PKA250R
Type of appliance B23
EC approval 0476CT2224
NOx Class EN 17082 NOxCLASS 5**
MIN MAX MIN MAX MIN MAX MIN MAX
Furnace Heat Input Pmin;
Pated,h
kW 26.5 90.0 38.0 115.9 48.0 162.0 61.0 217.0
Useful Heat Output kW 27.1 84.8 38.5 113.4 48.3 150.6 61.6 205.5
CombustionE󰀩ciency(Hi) ηpl;
ηnom
%102.4 94.1 101.2 94.2 100.5 94.5 101.0 94.7
CombustionE󰀩ciency(Hs) % 92.3 84.8 91.2 84.9 90.5 85.1 91.0 85.3
Seasonal heating energy
efficiency ηs,h %According to the chosen burner: see table in Par. 6.9
Output efficiency ηs,flow %According to the chosen burner: see table in Par. 6.9
Chimneyloss-BurnerON(Hi) % 7.5 7.4 7.4 7.8
Chimneyloss-BurnerOFF % < 0.1 < 0.1 <0,1 < 0.1
Casing losses *Fenv %1.81 1.26 1.16 1.17
Combustion Chamber pressure Pa 14 100 15 140 15 130 19 175
Combustion Chamber volume m30.24 0.37 0.52 0.76
Model PKA320R PKA420R PKA550R
Type of appliance B23
EC approval 0476CT2224
NOx Class EN 17082 NOxCLASS 5**
MIN MAX MIN MAX MIN MAX
Furnace Heat Input Pmin;
Pated,h
kW 74.0 275.0 83.0 345.0 95.0 450.0
Useful Heat Output kW 74.8 256.5 83.8 325.8 96.1 430.1
CombustionE󰀩ciency(Hi) ηpl;
ηnom
%101.0 94.9 101.0 95.2 101.2 95.3
CombustionE󰀩ciency(Hs) % 91.0 85.5 91.0 85.8 91.2 85.9
Seasonal heating energy
efficiency ηs,h %Accordingto the chosenburner:see table inPar.6.9
Output efficiency ηs,flow %Accordingtothe chosen burner:seetable in Par. 6.9
Chimneyloss-BurnerON(Hi) %7.7 7.8 7.7
Chimneyloss-BurnerOFF % < 0.1 < 0.1 < 0.1
Casing losses *Fenv %1.03 1.03 0.97
Combustion Chamber pressure Pa 23 225 30 275 40 365
Combustion Chamber volume m31.06 1.55 1.79
* Heatloss of the casingmustbeconsidered only when heater
is installed outdoor or in a thermal station. If the heater is
installedintothebuildingtobeheated,heatisirradiated inside,
socasinglossesarezero
** With CLASS 3 GAS BURNERS according to EN676

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 18
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
Air ow rate technical data, head pressure and installed power supply.
Values of PKA and PKE are identical, as well as values of N, Kand Rseries
Model PKA100 PKA140 PKA190
Version 10W 20W 10W 20W 10W 20W
AirFlowRate-15°C m3/h 7,300 10,500 14,000
Available Head Pressure Pa 150 270 140 280 150 230
Heat drop Min and Max* K 28.3-38.0 23.8-45.2 23.4-40.8
Power supply V 400T+N 400T+N 400T+N
Frequency Hz 50
Motor Max. capacity ** kW 1.5 2.2 3.0 4.0 3.0 4.0
Max. Absorbed power*** kW 1.91 2.72 3.63 4.73 3.63 4.73
Protection Rating IP PKASeries=IP20,PKESeries=IP24;PKAControlPanel=IP44,PKE=IP54
Running temperature °C from-20°Cto+40°C(checkrunningtemperatureofmatchingburner)
Model PKA250 PKA320 PKA420 PKA550
Version 10W 20W 10W 20W 10W 20W 10W 20W
AirFlowRate-15°C m3/h 18,000 23,000 30,000 40,000
Available Head Pressure Pa 130 250 210 320 180 270 180 280
Heat drop Min and Max* K 22.4-42.4
9.5-38.4(SeriesK)
21.1-40.5
9.0-38.6(SeriesK)
22.3-40.9
7.8-38.8(SeriesK)
21.0-41.0
6.7-38.0(SeriesK)
Power supply V 400T+N 400T+N 400T+N 400T+N
Frequency Hz 50
Motor Max. capacity ** kW 2x2.2 2x3.0 2x3.0 2x4.0 2x5.5 2x5.5 2x4.0 2x5.5
Max. Absorbed power*** kW 5.43 7.26 7.26 9.46 12.8 12.8 9.46 12.8
Protection Rating IP PKASeries=IP20,PKESeries=IP24;PKAControlPanel=IP44,PKE=IP54
Running temperature °C from-20°Cto+40°C(checkrunningtemperatureofmatchingburner)
* Minimum heat drop is referred to minimum heat input, while
maximum heat drop refers to maximum heat input
** Max. capacity refers to the maximum power delivered by
the motor; as for the heater, the power actually delivered by
the motor depends on the fan working position with respect to
the air distribution system’s drops (system drops)
*** Maximum absorbed power refers to the maximum power
deliveredbythemotormultipliedbythesuppliedmotore󰀩ciency
(e󰀩ciencyIE3);thepowerabsorbedbythematchingburner
must be add to the value indicated in the table.

19
code HG0330.00GB Ed.A-2303 APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation PK
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.7. Noise
DUCTED HEATERS
The following table shows sound power values,
LwA, and sound pressure values, LpA, issued
by PKA/E heaters of 10W and 20W versions.
The value refers to heaters with ducted intake
and delivery.
ThevaluesinthetablerefertoLwApower,which
passes through the heater sandwich panels.
Detection distances for sound pressure have
beenchangedaccordingtoheatersize.
For the values of fan noise in ducts for air intake
and delivery, contact APEN GROUP Technical
Support.
Noise level is the same in N series, R series and K series heaters.
Heater with ducted delivery and intake
MODEL LwA - Sound Power Level [dB(A)] LwA distance LpA
63 125 250 500 1000 2000 4000 8000 dB(A) metres dB(A)
PK100-10W 47.4 61.9 61.4 60.6 58.8 54.0 46.3 37.7 67.2 4 44.1
PK100-20W 48.4 62.9 62.4 61.6 59.8 55.0 47.2 38.7 68.2 4 45.1
PK140-10W 48.8 63.3 62.8 62.0 60.2 55.4 47.7 39.2 68.6 4 45.5
PK140-20W 50.0 64.5 64.0 63.2 61.4 56.6 48.9 40.3 69.8 4 46.7
PK190-10W 51.6 66.1 65.6 64.8 63.0 58.2 50.5 41.9 71.4 6 44.8
PK190-20W 53.0 67.5 67.0 65.9 64.4 59.6 51.9 43.3 72.7 6 46.1
PK250-10W 49.9 64.4 63.9 63.1 61.3 56.5 48.3 40.2 69.6 6 43.1
PK250-20W 52.4 66.9 66.4 65.7 63.8 59.0 51.3 42.7 72.2 6 45.6
PK320-10W 54.3 68.8 68.3 67.6 65.7 61.0 53.2 44.6 74.1 6 47.5
PK320-20W 55.4 69.9 69.4 68.7 66.8 62.0 54.3 45.7 75.2 6 48.6
PK420-10W 58.9 73.4 72.9 72.2 70.3 65.5 57.8 49.2 78.7 10 47.7
PK420-20W 59.9 74.4 73.9 73.2 71.3 66.5 58.8 50.2 79.7 10 48.7
PK550-10W 58.3 68.0 64.2 63.5 57.6 53.9 46.1 37.1 71.0 10 40.0
PK550-20W 64.7 68.2 64.3 64.5 58.1 53.8 46.5 37.7 72.0 10 41.0

code HG0330.00GB ed.A-2303
APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
PK 20
Floor Standing Warm Air Heater PK series
User, Installation and Maintenance Manual
3.8. Dimensions of PKA Vertical Heater
INDOOR VERTICAL HEATERS (Series N, K and R)
KG0100C2001
C
Model Overall dimensions Intake Delivery Prole Chimney Burner Weight
L B H Hb A E A D P G N Ø R C S Ø T kg.
PKA100 1100 800 2020 1020 800 1020 720 40 25 1760 180 46 1190 190 (251*)
PKA140 1330 920 2080 1250 800 1250 840 40 25 1800 180 78 1155 190 320 (326*)
PKA190 1460 1060 2230 1380 800 1380 980 40 25 1960 250 109 1190 190 382 (390*)
PKA250 1750 1140 2330 1670 800 1670 1060 40 25 2020 250 112 1180 190 506 (517*)
PKA320 1960 1140 2330 1880 800 1880 1060 40 25 2040 250 122 1180 230 574 (587*)
PKA420 2170 1340 2800 1000 2070 900 2070 1240 50 30 2480 300 132 1440 230 902 (919*)
PKA550 2600 1340 3170 1290 2500 1190 2500 1240 50 30 2800 300 92 1930 230 1148 (1170*)
KG0100ET004
* weights of K and R series heaters