Luna3 Comfort HT

Gas wall hung

condensing boilers

Baxi condensing solutions:

today and tomorrow’s

sustainable comfort

2

boilers distinguished by high performance (up to 109,8% effi ciency), wide output range (from 12 to 100 kW), energy saving (35% cut in gas consumption*), remarkable pollutant emission reduction (80% of NOx and 90% CO).

Baxi condensingsolutionsBaxi believes that the future depends on the constant development of new high technology products.Employing skilled engineers fully dedicated to research and development, Baxi manufactures anaward-winning range of gas wall hung condensing

* Compared to a traditional boiler

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Luna3 Comfort HT

Baxi has implemented Luna3 Comfort range with Luna3 Comfort HT new condensing boilers, provided with a remote control panel (wire connection) that, in addition to an easy setting and an immediate diagnostics, enables you to easily interact with the boiler.HT boilers use the new condensing technology recoveringalmost all the heat available through the combustion without wasting energy into the air. The programmablethermoregulation interface, supplied with the boiler,has a modulating regulation that guarantees themaximum effi ciency in the boiler’s operation andconsequently a considerable reduction of consumptions.

240 20 kW heating output 24 kW DHW output

280 24 kW heating output 28 kW DHW output

330 28 kW heating output 33 kW DHW output

1.120 12 kW heating output

1.240 24 kW heating output

1.280 28 kW heating output

Luna3 Comfort HT

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Condensing technology is the latest face in boiler innovation.

By employing pre-mixing burner know how, condensing boilers ensure higher performance: almost all the heat

available through combustion is recovered without wasting energy into the air, as happens with traditional boilers.

Condensing

technology

Luna3 Comfort HT

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Environmentally friendlyCondensing pre-mixing boilers are synonymous with

energy savings and reduced emissions. Used in low

temperature systems, condensing boilers tipically

facilitate a cutback of 35% in gas expenditure. Their

ability to signifi cantly reduce noxious gases (up to

80% of NOx and 90% of CO) also makes condensing

boilers environmentally friendly thanks to the use of

pre-mix burners. NOx and CO are pollutants that have

an adverse impact on the environment (e.g. acid rain),

and Baxi is continually researching new environmentally

sustainable solutions.

Comfort right at your fi ngertipsThe remote control panel, supplied with Luna3 Comfort

HT, guarantees a complete comfort managing.

The interaction with the boiler is easier thanks to the

information clearly displayed in the wide LCD and

dedicated push-buttons for the heating and DHW

temperature regulation.

The panel works also as modulating room thermostat

and is provided with a 2 levels weekly timer.

High performance

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Wide modulation ratioLuna3 Comfort HT is provided with a wide modulation

ratio (1÷6) to cut down the number of repeated boiler’s

switching on/off thanks to reduced minimum output:

besides a better boiler working you will obtain lower

consumptions and lower gas expenditures.

This feature is profi table also in integrated systems

(instantaneous boiler combined with solar system):

regular working of the boiler ensures hot water and

comfort.

MODULATION RATIO

MODULATION RATIO 1÷5 FOR

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Luna3 Comfort HT

Noiseless of HT boilersLuna3 Comfort HT is quietin all operation phases thanks to the soundproofi ng of thecombustion chamber andto the special components.

High energetic effi ciencyLuna3 Comfort HT boilers have obtained 4 stars (★★★★)energetic effi ciency according to European Directive 92/42/CEE.

Low and hightemperature systemsThe electronics of Luna3 Comfort HT enables to manage also low temperature systems. For mixed systems you can use the Baxi Mixed System Kit available as option.

Hydraulic groupIn Luna3 Comfort HT the pre-heating function can be selected: after any hot water demand, the boiler keeps the primary circuit intemperature so that thefollowing hot water demandwill have the desiredtemperature immediately. This function will deactivateautomatically after 60’ of nowater demand to containenergy consumption. Forheating only models, it ispossible to easily connect and control an external cylinder thanks to the built-in 3 way electric valve.

Outdoor sensorLuna3 Comfort HT has a built-in weather compensation function (outdoor sensor available as option) to adjust the heating fl ow temperature according to the external temperature.

Connection to solar systemsCombi models are designed to be easily connected to Baxi integrated solar systems. For the installation, please follow the instruction manual.

★★★★

Technical features

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Quality and reliability of Baxi boilers range, have

always been guaranteed by a careful choice of each

component. Their positioning has been thought to

make them easily reachable, making the service easier.

Luna3 Comfort HT is provided with all regulation

and control systems to ensure the maximum comfort

and safety:

• Electronic continuous fl ame modulation

• Automatic gradual ignition and control by

fl ame ionization

• Electronic temperatures control by NTC sensors

• Overheat limit thermostat to protect the

primary exchanger

• Hydraulic pressure switch to prevent boiler’s

operating in event of low water

• Post circulation of the pump in central heating

and sanitary modes

• 3 bar pressure relief valve

• On sight manometer to easily check the system

pressure

• Grade of protection: IPX5D

Luna3 Comfort HT

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Stainless steel heat

exchanger

with soundproofi ngcomposite casing,resistant to heat andcorrosion.

Air inlet collector

thanks to its special design, the boiler is able to work with very low outputs granting a relevant noise reduction

Steel Burner

stainless steel AISI 316Lwith double chamber to optimize the combustion

Modulating fan

to have a perfectair/gas mixing

Enhanced DHW exchanger

made of stainless steel plates to ensure the maximum heat exchange (combi models)

3 way electric valve

with electric full anti-frost device and pre-heatingfunction.

Gas valve

with double safetysolenoid

3 speeds pump

low energeticconsumption with an electronic anti-block device

Brass hydraulic group

to guarantee lastingreliability

Condensing trap

in an easy checking position.

Expansion vessel

up to 10 lt capacity, forsystems with high watercontent.

Flue intake removable

without tools

easy access for thecombustion analysis

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Remote control panel:immediate control and diagnosticsThe new generation of Baxi condensing boilers is supplied with a wide control panel (with a LCD display and wire connection) to guarantee the remote managing of the boiler. The regulations are done directly on the remote control. The advanced electronics enables the installation in low and high temperature systems.

Main functions

• All boiler’s parameters setting and display: room temperature, heating fl ow, climatic curve and DHW temperature setting, heating and DHW set temperature, outdoor temperature display (if the outdoor sensor is connected), level of modulation, hot water fl ow rate.• Self-check and recording of the latest anomalies.• Control of the remote control’s zone valve through the boiler’s electronics.• Built-in weather compensation function. When the external sensor is connected (available as option), the electronics selects automatically the more suitable climatic curve, adapting the heating fl ow temperature according to the external temperature and room temperature.• Central heating mode: 2 levels weekly timer (comfort/economy); the boilers’ functioning settings can be done for single days or for groups of days.• DHW mode: 4 levels daily timer (heating only versions with indirect cylinder connected).• Temporary central heating function selection: possible forcing of the programs for temporary functioning (i.e. holiday, presence setting).• Pre-heating function: after any hot water demand, the boiler keeps the primary circuit in temperature so that the following hot water demands will have the desired temperature immediately. This function will deactivate automatically after 60’ of no water demand to contain energy consumption.

SpecialfunctionDirectly from the control panel the user can activate the SHOWER SETTING, temporarily modifying the domestic hot water temperature, that in a second time will return to the previously set temperature.

Set of temporaryspecial functioning

(i.e. holidays, presence, shower setting)

Room temperature/fl ow temperature

UP

Room temperature/fl ow temperature

DOWN

Confi rmation/reset

Heating programming:automatic/manual/off

Selection of info/programming mode

DHW temperature UP

DHW temperature DOWN

On/off winter/summer heating only/OFF(working antifrost)

Comfort/economy selection

Luna3 Comfort HT

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Heating only

240 280 330 1.120 1.240 1.280

Maximum DHW heat input kW 24,7 28,9 34 - - -Maximum heating heat input kW 20,5 24,7 28,9 12,4 24,7 28,9Maximum DHW heat output kW 24 28 33 - - -Maximum heating heat output 80/60°C kW 20 24 28 12 24 28Maximum heating heat output 50/30°C kW 21,6 25,9 30,3 13 25,9 30,3Minimum heat output 80/60°C kW 4 4,8 5,6 2* 4,8 5,6Minimum heat output 50/30°C kW 4,3 5,1 6,1 2,2* 5,1 6,1

Energetic effi ciency (92/42/CEE) ★★★★ ★★★★ ★★★★ ★★★★ ★★★★ ★★★★

Average effi ciency (DIN 4702-T8) % 109,8 109,8 109,8 109,8 109,8 109,8Nominal effi ciency 80/60°C % 97,6 97,6 97,6 97,6 97,6 97,6Nominal effi ciency 50/30°C % 105,1 105 105 105,2 105,1 105Effi ciency 30% % 107,5 107,5 107,3 107,5 107,5 107,3NOx class (EN 483) 5 5 5 5 5 5Minimum working temperature °C -5 -5 -5 -5 -5 -5Expansion vessel capacity/pre-charge l/bar 8/0,5 8/0,5 10/0,5 8/0,5 8/0,5 10/0,5Heating temperature range °C 20/80 20/80 20/80 20/80 20/80 20/80DHW temperature range °C 35/60 35/60 35/60 35/60 35/60 35/60DHW production ΔT 25°C (1) l/min 13,8 16,1 18,9 - - -

Minimum capacity DHW fl ow rate l/min 2 2 2 - - -Minimum pressure heating circuit bar 0,15 0,15 0,15 - - -Maximum pressure DHW circuit bar 3 3 3 3 3 3Maximum pressure heating circuit bar 8 8 8 - - -Coaxial fl ue system Ø 60/100max length mm 10 10 10 10 10 10Dual fl ue system Ø 80 max length mm 80 80 80 80 80 80Maximum fl ue mass fl ow rate kg/s 0,012 0,014 0,016 0,006 0,012 0,014Minimum fl ue mass fl ow rate kg/s 0,002 0,002 0,003 0,001 0,002 0,003Maximum fl ue temperature °C 73 75 75 73 73 70

Dimension (h x l x p) mm 760x450x345Net weight kg 44,5 45,5 46,5 44 45 46Gas type Natural gas/LPGPower consumption W 150 155 160 150 150 155Grade of protection IPX5D IPX5D IPX5D IPX5D IPX5D IPX5D

*Boiler working with Natural gas. In case of LPG conversion the minimum output is 3,9 kW (80/60°C) and 4,2 kW (50/30°C)(1) without fl ow restrictor

Combi

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Flue system

Luna3 Comfort HT240, 280, 330

Luna3 Comfort HT1.120, 1.240, 1.280

Accessories included• Filling tap

• Drain tap

• Gas tap

• Domestic mains water tap with fi lter

• Telescopic pipes with nipples

• Template and fi xing screws

On request heating fl ow/inlet taps

MR Heating system fl ow G 3/4US DHW outlet G 1/2MB Storage tank fl ow G 3/4GAS Gas inletES Domestic mains water inlet G 1/2RR Heating system return G 3/4SC Condensing trap possible to connect on a pipe Ø 21A Boiler hanging points. Distance between hanging points: 425 mmB Distance between hanging points and hydraulic connection

Luna3 Comfort HT 1.280 - 330

Luna3 Comfort HT 1.120

I speedII speed

III speed

Luna3 Comfort HT 240 - 1.240 - 280

I speedII speed

III speed

I speed

II speed III speed

FLOW RATE (l/h)

FLOW RATE (l/h)

HE

AD

mH

2O

HE

AD

mH

2O

HE

AD

mH

2O

FLOW RATE (l/h)

Coaxial duct Ø 60/100 10 1 0,5 100

Ø 80/125 25 1 0,5 125

Dual fl ue tube Installation with chimney terminal Ø 60 30 3 1,25 60

Installation with chimney terminal Ø 80 80 0,5 0,25 80

Installation with chimney terminal 15 0,5 0,25 133

Luna3 Comfort HT

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Coaxial fl ue system

Dual fl ue system

The maximum length of the air duct is 15 metres

L L

L max = 10m Ø 60/100L max = 25m Ø 80/125

L L

L max = 9m Ø 60/100L max = 24m Ø 80/125

L

L

L max = 10m Ø 60/100L max = 25m Ø 80/125

L max = 10m Ø 60/100L max = 25m Ø 80/125

L max = 9m Ø 60/100L max = 24m Ø 80/125

L max = 8m Ø 60/100L max = 23m Ø 80/125

L L L L

L max = 15m L max = 14m

L2 L1 L2 L1

L1 + L2 max = 80m

110 120 110

177

159

min

345

140,5

177 140,5

450 345

127

min

LAS chimney

Max length (m) Length reduction with a 90° bend

insertion (m)

Length reduction with a 45° bend

insertion (m)

Flue discharge Ø (mm)

Flue system

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Accessories (available as option)

PP Coaxial verticalchimney terminal HT

KHG 714093510(+ KHG 714093910)

PP Coaxial fl ue tubeswith terminal60/100 HT

KHG 714059611

Flat roof title HTØ 125

KHG 714093610

PP Coaxial fl ue tubesextension 60/100 HT

L=1000 KHG 714059513

Pitched roof tile HTØ 125

KHG 714093710

PP Coaxial 87° bend 60/100 HT

KHG 714059714

Internal sealing collar Ø 100

KHG 714017710

PP Coaxial 45° bend 60/100 HT

KHG 714059814

Coaxial fl ue system

Internal sealingcollar Ø 80

KHG 714018510

PP Tube Ø 80L = 1000 KHG 714059411 L = 500 KHG 714059910

PP Tube Ø 60L = 1000 KHG 714075310L = 500 KHG 714075210

PP Dual fl ue system Ø 80

KHG 714059113

Dual fl ue system

PP Reduction from Ø 80 to Ø 60

KHG 714075610

Luna3 Comfort HT

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Dual fl ue terminal

Ø 80 KHG 714010410Ø 60 KHG 714037210

Tube Ø 80 supporting bracket. (pack of 5)

KHG 714037310

PP Vertical fl ue systemØ 80 B23 model

KHG 714111010

Pitched roof tile Ø 125. The pitch can becorrected form 15° to 45°

KHG 714093710

Clamp centring kit Ø 80

KHG 714106110

PP Dual fl ue tubesadapter for coaxial chimney

KHG 714093810

Flat roof tile Ø 125

KHG 714093610

Tube Ø 80 centring kit. (pack of 5)

Ø 80 KHG 714037411Ø 60 KHG 714051510

PP Coaxial verticalchimney terminalØ 80 / 125

KHG 714093510(+ KHG 714093810)

External sealing collar Ø 80

KHG 714018411

Dual fl ue system

PP Bend Ø 80

87° KHG 71405921145° KHG 714059311

PP Bend Ø 60

90° KHG 71407541045° KHG 714075510

PP fl exible tube Ø 80

L=1,5 m KHG 714105710L=20 m KHG 714105810

Flexible ducting system PP 90° bend Ø 80 with supporting bracket and condensate draining

KHG 714105910

Triple lips gaskets kitØ 80 (pack of 5)

KHG 714111210

Flexible centring kit Ø 80 (pack of 3)

KHG 714106210

PP 90° bend Ø 80 with supporting bracket

KHG 714106010

QualityEnvironment

Safety

QualityEnvironment

Safetyare Baxi strategic aims and the awarded certifi cations

ensure compliance with the specifi c regulations

The Company assumes no responsibility for any possible contents mistakes, and reserves the right to make changes in products, due to technical or commercial demands, at any time without notice.

Baxi S.p.A. 05-08 (C)

36061 BASSANO DEL GRAPPA - ItalyVia Trozzetti, 20Tel. +39 0424 517111 - Fax: +39 0424 38089marketing@baxiinternational.com

www.baxiinternational.comwww.baxigroup.com