Multicalor Udara Udara 10 Guide

Udara


Gas-redcondensingandmodulatingairheaterwithan
automaticallyregulatedenergy-ecientfanwithadirectcurrent
motorandgas-adaptiveburnercontrol
Brand: Multicalor Udara
Model: 10, 15, 20, 30, 40 et 50 (DF)
Country of destination: United Kingdom (UK)
Read this document before starting the installation or using the
appliance. After commissioning, give instructions to the user and
keep this document in the immediate vicinity of the appliance.
This appliance may not be operated by children, people with
a diminished mental capacity, physical impairments or lack of
knowledge unless under supervision or after receiving training
on how to use the appliance safely and as long as they are
aware of the possible risks. Children may not play with the
appliance under any circumstances. Cleaning and maintenance
performed by the user may never be carried out by children
without supervision.

Blarenberglaan 21 • B–2800 Malines
Tel.: [phone] • Fax: [phone]
[e-mail] • www.multicalor.be
IHL_UDARA_2023_BEGB Wijzigingen voorbehouden

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IHL_UDARA_2023_BEGB
Table of contents
1 Safety 5
1.1 Warnings and symbols 5
1.2 Improper use 5
1.3 General safety instructions 5
2 General information 8
2.1 Description 8
2.2 Gas category 8
2.3 Standard version 8
2.4 Outdoor air version 8
2.5 Versions 8
3 Technical data 9
3.1 In general 9
3.2 Technical data 9
3.3 Overview of components 10
3.4 Dimensions 11
4 Installation 12
4.1 In general 12
4.2 Installationoftheuegasoutletsystem 12
4.3 Installation of the condensate drain cond󰀨󰀨󰀨󰀨󰀨󰀨󰀨 17
4.4 Installation of the gas pipe 17
4.5 Installation of the ductwork 18
5 Commissioning 20
5.1 Switchingtheapplianceonando󰀨 20
5.2 Regulating the combustion 20
5.3 Converting the appliance to propane 21
6 Operating and setting 22
6.1 In general 22
6.2 Modulating thermostat RC21 22
6.3 Air-conditioning 23
6.4 Heat pump 23
6.5 Operation in heating mode 23
6.6 Setting as ventilation 23
6.7 The control panel 23
6.8 Changing settings 24
6.9 Error codes 26
7 Maintenance 27
7.1 Maintenance by the user 27
7.2 Maintenance by the installer 27
8 Troubleshooting 28
8.1 Appliance does not start after 5 attempts 28
8.2 Internal error 29
8.3 Overheating and NTC errors 29
8.4 Display does not work 29
8.5 Flue gas fan operates continuously or not at all 29
8.6 System fan operates continuously or not at all 29
8.7 No communication with thermostat 29
8.8 Fuse or earth leakage circuit breaker intervenes 30
8.9 Lossofameshortlyafterignition 30
8.10 Service Request 30
8.11 Normal settings 30

IHL_UDARA_2023_BEGB 3
9 Diagram 31
10 Parts 32
10.1 Parts list 32
10.2 Ordering procedure 32
10.3 Service request 32
11 Guarantee 33
11.1 In general 33
11.2 Scope and duration of the guarantee 33
11.3 Damage that is not covered by the guarantee 33
11.4 The following are not covered by the guarantee 33
11.5 Repairs 33
11.6 Service sets 33
12 Multicalor RC21.14 34
12.1 Setting the language, date and time 34
12.2 Mode
12.3 Summer ventilation 36
12.4 Program 36
12.5 Switchingo󰀨periods(max.of2periods) 37
13 EC Declaration of conformity 38
14 Declaration of conformity KB 2004-01-08 39

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IHL_UDARA_2023_BEGB
This section must be carefully studied by the installer
and the user.
1.1 Warnings and symbols
A number of symbols point out possible dangers that
may occur when installing or using the appliance.
Depending on the seriousness of the potential
situation, other symbols, icons or words are used.
Always take these warnings seriously and never ignore
them.
1.2 Improper use
The Udara air heater is intended for heating systems
based on hot air where both the heated and the intake
air is distributed through a system of ducts.
Iftheapplianceisusedinexpertlyorimproperly,a
situation may be created that entails danger for the
user or third parties or can lead to damage to the
appliance or the environment.
You may only install the Udara if you combine the
appliance with the accessories listed in the manual for
thecombustionairsupply(CAS)anduegasoutlet
(FGO).
As an installer or user you have the obligation to
closely follow the instructions contained in the manual
of the appliance or the possible accessories. You
must, moreover, respect all inspection and
maintenance conditions
You must connect the appliance electrically in
accordancewiththeprotectiondegreespeciedon
the nameplate and in accordance with the locally
applicable regulations.
If you implement changes to the appliance that are
not described in the manual, you must ask for written
permission from the manufacturer.
Transgressions to these instructions will be deemed
not according to the regulations and may lead to
dangerous situations or material damage regarding
which the manufacturer rejects any responsibility.
1.3 General safety instructions
The installation, mounting, disassembly,
commissioning, maintenance and repair must only be
performed by professionals. They must have all legal
qualicationsand,bypreference,theymusthave
followed training at the manufacturer of the appliance.
As a user, you must closely follow the maintenance
instructions. Ask your installer to go through this
section if you have any questions.
1.3.1 Danger of fatal injury because of gas leaks
With regard to gas smells in buildings:
• extinguishallnakedames(suchasfrom 
smoking,cookers,etc.).
• Do not operate any doorbells, switches, plugs,
telephones, entry panels or other devices
• Close the main gas valve and the gas valve on the
product.
• Open windows and doors.
• Evacuate the building and stop third parties from
entering the building.
• Warntherebrigadeusingatelephone 
connectionoutsidethebuilding(forexample,at
theneighbours).
• If the leak occurs in front of the gas meter, warn
the energy company.
Liquid gas is heavier than air and will collect near the
oor.Iftheapplianceisbeinginstalledbelowground
level, leaking liquid gas will collect and, therefore,
therewillbeanexplosionrisk.
• Ensure that liquid gas can never escape from the
appliance or the gas pipe.
1.3.2 Dangeroffatalinjurybecauseofammable
substances
Donotuseorkeepexplosiveorammablesubstances
(petrol,thinner,paper,etc.)neartheappliance.
1.3.3 Danger of fatal injury because of
combustiongasesescaping
Ifuegasesescape,thiscanleadtodangerous
situations.
• Only use the appliance with a fully installed
CAS/FGO
1 Safety
Danger!
This symbol warns you about a serious danger.
Intervene immediately to prevent heavy physical or
fatal injury or signicant material damage.
Danger!
This symbol warns about a danger or fatal injury
because of an electric shock. Ignoring this warning
can lead to signicant physical or fatal injury.
Warning!
This symbol warns about a dangerous situation.
Ignoring this warning can lead to physical injury,
material damage or environmental damage.
Attention!
This symbol warns about a situation that deserves
your attention. Ignoring this warning can lead to
material damage. .
Information(s)
This symbol indicates that somewhere else in the
manual you can nd more information about this
topic or it will refer you to a local standard.

IHL_UDARA_2023_BEGB 5
• Always use the appliance with an installed front
cover.
A dangerous situation may occur if the appliance is
suppliedwithinsu󰀩cientcombustionair.
• Ensure there is a permanent and unobstructed
air supply to the set-up room of the appliance in
accordance with the applicable standards.
Ifyousmelluegasesoryoususpectthereisa
combustion gas leak, you must intervene immediately.
• Open windows and doors and ventilate the
building.
• Switcho󰀨theproduct.
• Consult your installer and have the combustion
circuit checked for leaks or obstructions.
Ifthecondensatetrapisempty,uegasmayleak.
• Alwaysusetheappliancewithafullylled 
condensate trap.
1.3.4 Danger of fatal injury because of electric
shocks
If you touch components that carry a current, there is
a danger of fatal injury because of an electric shock.
Before you work on the product:
• Ensure that the current to the appliance has been
disconnected.
• Protect against reconnection.
• Always wait a few minutes so that the capacitors in
motor controls, etc., are discharged.
1.3.5 Danger of fatal injury because of changes
Unauthorised changes to the product or set-up room
can lead to dangerous situations.
• Never remove, bypass or change the temperature
probes in the appliance.
• Sealed parts in the appliance must not be opened.
• Never change the piping for gas or the CAS/FGO
and the wiring for the voltage.
• The condensate discharge must always be
present and changes must never be implemented
regarding the condensate discharge.
1.3.6 Dangerofreorbecomingtrapped
If you want to connect the appliance without ductwork,
you must:
• Install a vent on the suction opening that impedes
access to the fan compartment;
• Install a vent or blow plenum on the blow hole so
that there is no direct access to the heat
exchangercompartment.Thisventorplenum
mustalsoensurethatammablematerialcannot
fallontheheatexchanger.
These accessories are available from our range. If you
do not know which accessories you need, you can
contact your dealer for additional information.
• Also make absolutely sure that the environment in
which the appliance is being installed cannot lead
toanydangersbecauseofoatingdustand/or
ammableorcorrosivesubstancesorfumes.
Some parts of the appliance can become very hot
during and shortly after use.
• Only carry out activities such as maintenance after
the appliance has completely cooled down.
1.3.7 Riskofcorrosiondamage
Chemical products such as solvents, paints,
adhesives, soaps, etc., may lead to corrosion in the air
heater or in the CAS/FGO.
• Ensure that the combustion air is always dust-free
andisnotpollutedbyuorine,chlorine,sulphur
and other contaminants.
• If the combustion air is being supplied through a
chimney duct, it must not have been used in the
past as an FGO for fuel oil devices, coal or wood
burnersoropenreplaces.
• If the appliance is set up in launderettes, ironing
parlours, swimming pool rooms, etc., the
appliance must be installed in a separate
set-up room in which the ambient air is free from
chemical contaminants.
• Combustionairthatisinsu󰀩cientlydust-free
canleadtoanunreliableignitionand,inextreme
cases,evendamagetotheheatexchanger
becauseofinternaldirt.Ifthisriskexists,youmust
orderanintakelterfortheCASthatisavailable
as an accessory.
1.3.8 Materialdamagebecauseofunsuitable
tools
In addition to conventional tools, you also need a
numberofspecictoolstoworkonormaintainthe
Udara appliance.
• You need a special square drill bit, size 2, to
loosen the tapping screws.
• In addition, you need a set of Allen wrenches with
a rounded side.
• Using a 0-10 Nm torque wrench is recommended.
• Youmusthaveauegasanalysingdevicethat
canmeasurethefollowingsubstancesintheue
gases:NOx(nitrogenoxides),O2(residual 
oxygen)andCO(carbonmonoxide).Ifyour
appliancecannotmeasureNOx,itisstrictly
prohibited to change the adjustment of the
appliance or to perform a manual calibration.
1.3.9 Materialdamagebecauseoffrost
If the appliance is not set up frost-free, the appliance
can be damaged. If the temperature of the suctioned
air drops far below freezing point, frost can even occur
intheheatexchangeritself.
In such a case, a bypass must be made using the air
outlet duct to the suction duct so that the suctioned air
is preheated.

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1.3.10 Materialdamagetotheexiblegastube
Theexiblegastubecanbedamagedbecauseofa
heavy load due to a weight or repeated and
unnecessary bending.
• Donotsuspendtheburnerandmixingboxfrom
theexiblecorrugatedgastubeduring 
maintenance
1.3.11 Materialdamageafterwateringress
Iftheapplianceorpartsofitareexposedtowater
ingress, the appliance must be put out of service
immediately.Allsafetycomponentsthatareexposed
to water must, subsequently, be replaced

IHL_UDARA_2023_BEGB 7
2 General information
2.1 Description
MulticalorUdaraairheatersaregas-redcondensing
and modulating appliances with a cleaner combustion,
automatically controlled direct current fans and a
gas-adaptive control.
2.2 Gas category
Theappliancehasbeensetforbeingredwithnatural
gasofthesecondfamily(I2N)ex-factory.Ifyouwant
to use the appliance with propane, the burner
management control system must be adjusted and a
new nameplate must be added to the appliance. Only
an engineer appointed by the manufacture can do this.
The appliance is delivered ready for use. It is
su󰀩cienttoconnecttheuegasoutlet(FGO)duct,
thecombustionairsupply(CAS)duct,thegaspipe,
the condensate discharge, the air ducts and the power
lines.
2.3 Standard version
The standard version of the appliance is used for the
distribution of recycled air to which no more than 25%
of outdoor air is added or for the distribution of outdoor
air to heat recovery. The appliance will work in this
modeex-factory.
2.4 Outdoor air version
The outdoor air version of the appliance is used to
distribute air to which more than 25% of outdoor air is
added.
Warning!
If the appliance is deployed as an outdoor air
version, you must perform the changes specied
below to prevent damaging the appliance.
If you want to deploy the appliance as an outdoor air
appliance, you must order an additional insulation
set to insulate the fan compartment of the Udara air
heater. This will limit condensation on the outer
housing of the appliance.
In addition, the condensate trap must be installed
outsidetheapplianceusinganextendedhosesetwith
regardtotheupowversionsoftheUdara.
The condensate hoses in the fan compartment must
alsobesafeguardedfromfrost,forexample,by
installing thermal insulation and/or a heating ribbon
around the hoses.
If the temperature of the suctioned air drops below
freezingpoint,thecondensateintheheatexchanger
itself can freeze. In such a case, a bypass must be
made using the air outlet duct to the suction duct so
that the suctioned air is preheated. 2
2.5 Versions
The Multicalor Udara appliances are available in 2
versions:upowanddownow.
2.5.1 Upow
Suctioning takes place at the bottom of the appliance
withregardtoanupowversion.Theblowingoutof
the hot air takes place at the top of the appliance. This
is also sometimes called a top blowing version.
Thelterisatthebottomoftheairheaterasstandard.
If you want to connect the appliance on its side, you
mustorderanoptionallterframe.
If side connection is required, we recommend ordering
alongtoollifelterfromtheaccessoryrangeandnot
tooptforthestandardsidelterframewithregardto
the Udara 40 and 50.
2.5.2 Downow
Suctioning takes place at the top of the appliance with
regardtoadownowappliance.Theblowingoutofthe
hot air takes place at the bottom of the appliance. This
is also sometimes called a bottom blowing version.
DF is added to the appliance type with regard to the
downowversion.

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3 Technical data
3.1 In general
The Udara air heaters are CE approved by Technigas based in Brussels and comply with the Gas Appliance
Directive 2009/142/EC. The CE label added to every appliance is the guarantee that the appliances are
continuously checked by TECHNIGAS. The appliances also meet the Machinery Directive 2006/42/EC, the
EMC Directive 2004/108/EC, the Low Voltage Directive 2006/95/EC and the Hazardous Substances Directive
2011/6 5/EU.
3.2 Technical data
3.2.1 GascategoryI2NandI3Ptechnicaldata
Udara HR (DF) 10 15 20 30 40 50
Gas category I2H, I2L, I2N, I2E, I3P
Gas appliance types B22p, C12, C32, C52, C92
Maximum load on the lower value [PCI] G20 - 20 mbar kW 10.0 14.8 19.7 29.5 39.4 49.2
Minimum load on the lower value [PCI] G20 - 20 mbar kW 1.8 2.6 3.4 5.1 6.8 8.6
Maximum power G20 - 20 mbar kW 10.6 15.7 21.0 31.4 42.1 52.5
Minimum power G20 - 20 mbar kW 2.0 2.8 3.7 5.6 7.4 9.4
Gas consumption at full load G20 - 20 mbar m³/h 1.058 1.566 2.085 3.122 4.169 5.206
Gas consumption at partial load G20 - 20 mbar m³/h 0.190 0.275 0.360 0.540 0.720 0.910
Gas consumption at full load G25 - 25 mbar m³/h 1.253 1.854 2.468 3.695 4.935 6.163
Gas consumption at partial load G25 - 25 mbar m³/h 0.216 0.313 0.409 0.614 0.818 1.035
Thermal efciency at full load % 106.2 106.3 106.4 106.6 106.8 106.8
Thermal efciency at partial load % 109.0 109.0 109.0 109.0 109.0 109.0
NOx emissions < 30 mg / kWh (CLASS 5 EN1020 / EN1319)
Gas category I3P
Maximum load on the lower value [PCI] G31 - 37 mbar kW 10.2 15.1 20.1 30.1 40.2 50.2
Minimum load on the lower value [PCI] G31 - 37 mbar kW 1.7 2.4 3.2 4.8 6.3 8.0
Maximum power G31 - 37 mbar kW 10.5 15.6 20.7 31.1 41.6 52.0
Minimum power G31 - 37 mbar kW 1.8 2.6 3.4 5.0 6.7 8.5
Gas consumption at full load G31 - 37 mbar kW 0.417 0.617 0.822 1.231 1.644 2.053
Gas consumption at partial load G31 - 37 mbar kW 0.069 0.099 0.13 0.195 0.260 0.328
Inlet pressure
G20
G25
G31
mbar
20
25
37
Nominal air ow rate m³/h 650 1200 1500 2100 3000 3500
Nominal temperature increase °C 51 41 44 47 44 47
Maximum discharge air temperatur °C 80
Working temperature in heating mode °C minimale 0° / maximale 35°
Nominal taken up power kW 0.17 0.20 0.26 0.30 0.55 0.60
Diameter restriction mm 3.6 4.0 4.0 4.4 6.0 6.4
Mixing box # 45 45 30 30 10 0
Venturi # 4 4 5 8 6 6
Gas connection Ø 1/2” G
FGO diameter mm 80
CAS diameter mm 80
Protection degree IP 20
Condensate discharge diameter mm 32
Condensate quantity kg/h 1.3 2.0 2.6 3.9 5.2 6.5
Power supply voltage V 230 V - 50 Hz (N + L + PE)
Width mm 400 400 400 500 600 700
Depth mm 720
Height mm 1100 1200
Weight kg 52 66 71 84 99 122
Fuse (outside appliance) A 6T 8T 8T 16T 16T 16T
CE approval number # E1432/5671

IHL_UDARA_2023_BEGB 9
3.3 Overview of components
14
6
1
2 3
4
15
5
8
4
7
12
11
10
9
16
1
2 3
9
10
12
14
16
11
4
5
6
7
8
13
15
Legend
Number Meaning
1 Combustion air supply
2 Flue gas outlet
3 Control panel
4 Probe discharge air temperature (NTC 2 / NTC 5)
5 Flue gas outlet coupling
6 Mixing box and venturi
7 Ionisation electrode
8 Ignition electrode
9 Flexible gas tube
10 Burner management control system
11 Flue gas fan
12 Gas valve
13 Intake temperature probe (NTC 1)
14 Condensate discharge trap
15 System fan
16 Air lter (in downow in lter cabinet)

10 IHL_UDARA_2023_BEGB
3.4 Dimensions
3.4.1 DimensionsUpow
Legend
Udara 10 15 20 30 40 50
A 400 500 600 700
* + 70
a Gas throughput
b Power supply cable connection
c Thermostat connection
d Condensate drain throughput
11
0
0
3
00
*
37
0
*
4
1
0*
5
35
*
*
A
-
6
0
A
1
2
0
75
A
-
6
0
66
0
7
2
0
72
5
A
30
4
7
0
67
5
x
41
0
3.4.1 DimensionsDownow
11
0
0
1
2
0
75
A
-
6
0
40
0
7
2
0
72
5
A
47
0
x
41
0
B
B-40
400
515
Legend
Udara 10 15 20 30 40 50
A 400 500 600 700
B 340 440 540 540
* + 70
a Gas throughput
b Power supply cable connection
c Thermostat connection
d Condensate drain throughput