Baxi Luna 3 Comfort 310 Fi Installation And Servicing Instructions

Marque: Baxi

Modèle: Luna 3 Comfort 310 Fi

Catégorie: Chauffe-eau

Taper: Installation And Servicing Instructions

Ce manuel convient également à

BAXI S.p.A. , l’une des entreprises leader en Europe dans la production d’appareils de chauffage et sanitaires à usage domestique,

(chaudières murales à gaz, chaudières au sol, chauffe-eau électriques, plaques de chauffe en acier), a obtenu la certication CSQ de

conformité aux normes UNI EN ISO 9001. Ce certicat assure que le Système de Qualité en usage aux usines BAXI S.p.A. de Bassano

del Grappa, où l’on a produit cette chaudière, satisfait la plus sévère des normes - c’est-à-dire la UNI EN ISO 9001 - qui concerne tous

les stades d’organisation et le personnel intéressé du procès de production et distribution.

BAXI S.p.A., one of the leading European enterprises to produce central heating and hot water devices for domestic use (wall-moun-

ted gaz-operated boilers, oor-standing boilers, electrical water-heaters and steel heating plates) has obtained the QSC certicate of

conformity to the UNI EN ISO 9001 norms. This certicate guarantees that the Quality System applied at the BAXI S.p.A. factory in

Bassano del Grappa, where your boiler was produced, meets the standards of the UNI EN ISO 9001 norm, which is the strictest and

concerns all organization stages and operating personnel involved in the production and distribution processes.

UNI EN ISO 9001

CERTIFICAZIONE DEI SISTEMI

QUALITA' DELLE AZIENDE

High efﬁciency gas ﬁred wall mounted combination boiler

Chaudière murale à gaz à rendement élevé

Installation and servicing instructions

Notice d’installation et d’entretien

WARNING: If the information in these instructions

is not followed exactly, a re or explosion may result

causing property damage, personal injury or death.

— Do not store or use gasoline or other ammable

vapors and liquids in the vicinity of this or any

other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use

any phone in your building.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

• If you cannot reach your gas supplier, call the

re department.

— Installation and service must be performed by a

qualied installer, service agency or the gas sup-

plier.

AVERTISSEMENT: Assurez-vous de bien suivre les instruc-

tions dennées dans cette notice pour réduire au minimum le

risque d’incendie ou d’explosion ou pour éviter tout dom-

mage matériel, toute blessure ou la mort.

— Ne pas entreposer ni utiliser d’essence ou ni d’autres

vapeurs ou liquides inammables à proximité de cet

appareil ou de tout autre appareil.

— QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ

• Ne pas tenter d’allumer d’appareil.

• Ne touchez à aucun interrupteur; ne pas vous

servir des téléfhones se trouvant dans le bâtiment.

• Appelez immédiatement votre fournisseur de gaz

depuis un voisin.

Suivez les instructions du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur, appelez

le service des incendies.

— L’installation et l’entretien doivent être assurés par un

installateur ou un service d’entretien qualié ou par le

forunisseur de gaz.

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

1. Introduction 3

2. Technical data 4

3. General boiler information 10

4. Installation 19

5. Commissioning 21

6. Boiler operation 25

7. Remote control installation 26

8. Connection of the external sensor probe 27

9. Connecting an external hot water tank 28

10. Electrical connections to a multi-zone system 29

11. Solar function 30

12. Pre-heat function 30

13. Routine servicing 30

14. Component replacement or periodic cleaning 31

15. How to purge the DHW system from limestone deposits 34

16. How to dusassemble the DHW heat exchanger 34

17. Cleaning the cold water lter 34

18. Parameters display 35

19. Parameters setting 37

20. Illustrated wiring diagram 38

21. Service history 40

CONTENTS

“Should overheating occur or the gas supply fail to shut off, do not turn

off or disconnect the electrical supply to the pump. Instead, shut off the

gas supply at a location external to the appliance”

Do not use this boiler if any part has been under water. Immediately call a

qualied service technician to inspect the boiler and to replace any part of

the control system and any gas control which has been under water.

WARNING: If the information in this manual is not followed exactly, a re or explosion may result causing pro-

perty damage, personal injury or loss of life.

— Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other

appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the re department.

— Installation and service must be performed by a qualied installer, service agency or the gas supplier.

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

The Luna 3 310 Fi - 1.310 Fi boilers are wall hung, fan assisted room-sealed boilers. Heat output is controlled by a modu-

lating gas valve.

The boilers, providing both central heating and domestic hot water at mains pressure, is designed for use with a fully

pumped, sealed and pressurised heating system.

The boilers are supplied with a pump, diverter valve, pressure relief valve, expansion vessel and pressure gauge fully

assembled and tested.

As supplied, the boilers will automatically modulate to provide central heating outputs between 10.4 and 31.0 kW (35 486

and 105 776 Btu/h).

The maximum output available for domestic hot water is 31.0 kW (105 776 Btu/h), capable of providing 2.8 gal/min. - 12.7

litres/min with a temperature rise of 63°F/35 °C.

IMPORTANT

It is the law that all gas appliances are installed by a competent person.

It is in your own interest and that of safety to ensure that the law is complied with.

• The installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requi-

rements, to the National Fuel Gas Code, ANSI Z223.1/NFPA 54

Where required by the authority having jurisdiction, the installation must conform to the Standard for Controls and

Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1.*

Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on boiler

when boiler underwent tests specied in ANSI Z21.13-latest edition.

• The installation should conform with CGA B149.1 INSTALLATION CODE and/or local installation Code, plumbing or

waste water codes and other codes as applicable.

• Clearances from and protection of combustible material.

• Manufacturer’s instructions must NOT be taken in anyway as over-riding statutory obligations.

1. INTRODUCTION

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

2. TECHNICAL DATA

2.1 PERFORMANCE

Central Heating MAX MIN

0÷2000 Ft 2000÷4500 Ft

0÷610 m 610÷1370 m

Heat Input Btu/h 126 249 120 107 45 040

(Gross) kW 37 35.2 13.2

Heat Output (modulating) Btu/h 105 776 100 658 35 486

kW 31 29.5 10.4

Burner Pressure Setting p.s.i. 0.203 0.186 0.0261

natural gas (A) mbar 14.0 12.8 1.8

Gas Rate ft

/h 124.2 118.2 44.5

natural gas (A) m

/h 3.52 3.35 1.26

Burner Pressure Setting p.s.i. 0.3541 0.3338 0.0479

LP gas (E) mbar 24.4 23.0 3.3

Gas Rate ft

/h 49.0 46.6 17.29

LP gas (E) m

/h 1.39 1.32 0.49

CH Water Temp. °F 185

(Approx.) °C 85

Domestic Hot Water MAX MIN

0÷2000 Ft 2000÷4500 Ft

0÷610 m 610÷1370 m

Heat Input Btu/h 126 249 120 107 45 040

(Gross) kW 37 35.2 13.2

Heat Output (modulating) Btu/h 105 776 100 658 35 486

kW 31 29.5 10.4

Burner Pressure Setting p.s.i. 0.203 0.186 0.0261

natural gas (A) mbar 14.0 12.8 1.8

Gas Rate ft

/h 124.2 118.2 44.5

natural gas (A) m

/h 3.52 3.35 1.26

Burner Pressure Setting p.s.i. 0.3541 0.3338 0.0479

LP gas (E) mbar 24.4 23.0 3.3

Gas Rate ft

/h 49.0 46.6 17.29

LP gas (E) m

/h 1.39 1.32 0.49

Flow Rate

(Can) G.P.M.

2.4

at 72°F/40°C Rise

(USA) G.P.M.

2.9

l/m 11.1

Outlet Water Temp. °F 149

(Approx.) °C 65

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

2.2 SYSTEM

Central Heating (Sealed System)

Max System Pressure 30 p.s.i. / 2.11 bar

Min System Pressure 7.25 p.s.i. / 0.5 bar

Max System temperature 185°F / 85°C

Pressure Relief Valve Setting 30 p.s.i. / 2.11 bar

Expansion Vessel Size 2.2 Gal / 10 l

(pre-charge press.) at 11.6 p.s.i. / 0.8 bar

Flow Connection 3/4” / 22.2 mm

Return Connection 3/4” / 22.2 mm

Relief Valve Connection 3/4” / 22.2 mm

Recommended System Pressure (cold) 21.7 p.s.i. / 1.5 bar

Domestic Hot Water

Max Mains Inlet Pressure 116 p.s.i. / 8 bar

Min Mains Water Pressure 2.9 p.s.i. / 0.2 bar

Min DHW Flow Rate (Can) 0.55 GPM / 2.5 l/min

(USA) 0.66 GPM / 2.5 l/min

Mains Inlet Connection 1/2” / 15.9 mm

DHW Outlet Connection 1/2” / 15.9 mm

Max DHW Temperature 149°F / 65°C

DHW Water Content (Can) 0.05 Gal / 0.23 l

(USA) 0.06 Gal / 0.23 l

2.3 COMPONENTS

Burner (15 blade) Stainless Steel

Main Heat exchanger Copper

DHW Heat exchanger Stainless Steel

Injectors natural gas (A) 1.28 mm

Injectors LPG gas (E) 0.90 mm

Pump Grundfos UPS 15-62/BX AO

Flue - Outer Duct Epoxy coated

Flue - Inner Duct Aluminium

Fan MVL RLG 97/3400 - 3030LH

Gas Valve SIT 845 SIGMA

Air Pressure Switch HUBA

Diverter Valve Baxi

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

2.4 INSTALLATION

Minimum Clearances for Servicing

Top 8.66 in / 220 mm

Bottom 9.84 in / 250 mm

Sides 1.77 in / 45 mm

Front 17.71 in / 450 mm

Flue Terminal Size Concentric System 3.93 in / 100 mm

Flue Terminal Size 2-Pipe Flue System 3.14 in / 80 mm

Flue Terminal Protruding 4.52 in / 115 mm

Lift Weight 88 lb / 40 kg

Dimensions Height 30.04 in / 763 mm

Width 17.71 in / 450 mm

Depth 13.78 in / 350 mm

Gas Connection 3/4”

Primary Water Content (Can) 0.33 Gal / 1.5 l

(USA) 0.40 Gal / 1.5 l

Air Duct Diameter 3.93 in / 100 mm

Flue Duct Diameter 2.36 in / 60 mm

Supply 120 V 60 Hz

Power Consumption 563 Btu /h - 165 W

Internal Fuse 3.15 A

Electrode Spark Gap 2.5 to 3.5 mm

2.5 GENERAL

2.6 ELECTRICAL

2.7 AVAILABLE PUMP HEAD FOR CENTRAL HEATING

This is a high static head pump t for installation on any type of single or double-pipe heating systems. The air vent valve

incorporated in the pump allows quick venting of the heating system.

Graph 1

WATER FLOW RATE

(l/h)

PUMP HEAD

(mH

0711_2301

WATER FLOW RATE (gal/h)

PUMP HEAD

(ft w.c.)

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

2.8 SYSTEM VOLUME

Based on 30 p.s.i. / 2.11 bar safety valve setting

Vessel charge and initial system pressure bar 0.5 1.0 1.5

psi 7.25 14.5 21.7

Total water content of system using 2.2 gal / 10 l Litres 120 91 64

capacity expansion vessel (Can)

gal 26.4 20 14

supplied with appliance (USA)

gal 31.7 24 16.9

For systems having a larger capacity MULTIPLY the TOTAL system capacity in litres (gallons) by 0.0833 0.109 0.156

the factor to obtain the TOTAL MINIMUM expansion vessel capacity required in litres (gallons)

Note: When the boiler is operating at maximum operating temperature, providing heating with all radiators operating, the

pressure gauge should not indicate more than 25.5 p.s.i. / 1.8 bar. If the reading exceeds this gure an additional expan-

sion vessel is required.

2.9 BOILER SCHEMATIC

Central Heating Mode (Fig. 1)

1. With a demand for heating, the pump circulates water through the primary circuit. At a pre-determined ow rate the

central heating ow switch operates, initiating the ignition sequence.

2. The main burner ignites at low rate, then the gas valve controls the gas rate to maintain the heating temperature mea-

sured by the temperature sensor.

3. When the ow temperature exceeds the setting temperature, a 3 minute delay occurs before the burner relights auto-

matically (anti-cycling). The pump continues to run during this period.

4. When the demand is satised the burner is extinguished and the pump continues to run for a period of 3 minutes (Pump

Overrun).

Central Heating Circuit

Key

1 Primary Heat Exchanger

2 Burner

3 Ignition Electrode

4 Flame Sensing Electrode

5 Gas Valve

6 Pump

7 Automatic Air Vent

8 Expansion Vessel

9 Plate Heat Exchanger

10 Flow Sensor with Filter

11 Boiler Drain Point

12 Pressure Relief Valve

13 Heating Return

14 Cold Water Inlet On/Off Valve and Filter

15 Gas Inlet

16 Domestic Hot Water Outlet

17 Heating Flow

18 Automatic By-Pass

19 Water Pressure Switch

20 Manometer

21 Domestic Hot Water Temperature Sensor

22 Three Way Valve

23 Three Way Valve Motor

24 Safety Thermostat

25 Central Heating Temperature Sensor

Fig. 1

0610_1201 / CG_1857

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

2.9.1 BOILER SCHEMATIC FOR 1.310 Fi MODEL

Operating Mode (Fig. 1.1)

1. With a demand for heating, the pump circulates water through the primary circuit. At a pre-determined ow rate the

central heating ow switch operates, initiating the ignition sequence.

The main burner ignites at low rate, then the gas valve controls the gas rate to maintain the heating temperature mea-

sured by the temperature sensor.

3. When the ow temperature exceeds the setting temperature, a 3 minute delay occurs before the burner relights auto-

matically (anti-cycling). The pump continues to run during this period.

4. When the demand is satised the burner is extinguished and the pump continues to run for a period of 3 minutes (Pump

Overrun).

Boiler Primary Circuit

Fig. 1.1

0610_1702 / CG_1859

Key

1 Primary Heat Exchanger

2 Burner

3 Ignition Electrode

4 Flame Sensing Electrode

5 Gas Valve

6 Pump

7 Automatic Air Vent

8 Expansion Vessel

9 Boiler Drain Point

10 Pressure Relief Valve

11 Boiler Return

12 Gas Inlet

14 Automatic By-Pass

15 Three Way Valve

16 Manometer

17 Boiler Flow

18 Three Way Valve

19 Three Way Valve Motor

20 Safety Thermostat

21 Temperature Sensor

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

Domestic Hot Water Mode (Fig. 2)

1. Priority is given to the domestic hot water supply. A demand at a tap or shower will override any central heating requi-

rement.

2. The ow of water will operate the DHW ow switch which requests the 3 way valve to change position. This will allow

the pump to circulate the primary water through the DHW plate heat exchanger.

3. The burner will light automatically and the temperature of the domestic hot water is controlled by the temperature

sensor.

4. When the domestic hot water demand ceases the burner will extinguish and the diverter valve will remain in the dome-

stic hot water mode, unless there is a demand for central heating.

Domestic Hot Water Circuit

Fig. 2

0610_1203 / CG_1858

Key

1 Primary Heat Exchanger

2 Burner

3 Ignition Electrode

4 Flame Sensing Electrode

5 Gas Valve

6 Pump

7 Automatic Air Vent

8 Expansion Vessel

9 Plate Heat Exchanger

10 Flow Sensor with Filter

11 Boiler Drain Point

12 Pressure Relief Valve

13 Heating Return

14 Cold Water Inlet On/Off Valve and Filter

15 Gas Inlet

16 Domestic Hot Water Outlet

17 Heating Flow

18 Automatic By-Pass

19 Water Pressure Switch

20 Manometer

21 Domestic Hot Water Temperature Sensor

22 Three Way Valve

23 Three Way Valve Motor

24 Safety Thermostat

25 Central Heating Temperature Sensor

Frost Protection Mode

1. Boilers electronic management includes a “frost protection” function in the central heating system which operates the

burner to reach a heating ow temperature of 30°C when the system heating ow temperature drops below 5 °C. This

function is enabled when the boiler is connected to electrical supply, the gas supply is on and the system pressure is as

required.

Pump Protection

1. In the event that no heat is required, the pump will automatically start up and operate for one minute during the fol-

lowing 24 hours. This function is operative when the boiler is powered.

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

3. GENERAL BOILER INFORMATION

The boiler requires a gas rate of 128.1 ft

/h - 3.63m

/h.

The meter and supply pipes must be capable of delivering this quantity of gas in addition to the demand from any other

appliances in the house. The boiler requires at least a 3/4” gas supply pipe. The complete installation, including the meter,

must be tested for gas leak and purged.

3.1 GAS SUPPLY

WARNING :

If the heating is directly connected to a oor heating system, a safety overheating thermostat should be provided by the

installer.

3.4.1 CONCENTRIC SYSTEM

The ue assembly supplied for the boiler is 2.64 ft / 0.75 m in length + terminal.

For horizontal ues a minor deviation from the horizontal is allowable, provided it results in a downward slope towards

the terminal.

Additional ue components are available as follows:

3.28 ft / 1 m ue

90° bend

45° bend

Vertical ue terminal assembly. Refer to the separate installation instructions supplied with the assembly.

Notes: If an extra 90° bend is used, this reduces the maximum ue length by 3.28 ft / 1 m. Each 45° bend used reduces

the maximum ue length by 1.64 ft / 0.5 m.

Under no circumstances must the ue length (including allowances for extra bends) exceed 4 m / 13.12 ft.

The boiler requires a 120V 60Hz power supply. Ensure the electrical supply is polarised.

The boiler must be grounded.

There must only be one common isolator, providing complete electrical isolation, for the boiler and any external con-

trols.

Using PVC insulated cable 18 AWG x3C 105 °C.

All wiring must be installed in accordance with requirements of National Electrical Code and any additional national, state,

or local code requirements having jurisdiction. All wiring must be N.E.C. Class 1. Boiler must be electrically grounded in

accordance with the National Electrical Code, ANSI/NFPA No. 70-latest edition.

In Canada, installation must conform to CSA C22.1 Canadian Electrical Code Part 1 and any local codes.

3.2.1 Install Room Thermostat

Install room thermostat on an inside wall. Never install where it will be inuenced by drafts, hot or cold water pipes, lighting

xtures, television, sun rays or near a replace.

3.2 ELECTRICAL SUPPLY

The boiler does not require any air vents in the room in which it is installed, or when installed in a cupboard or compart-

ment.

3.3 AIR SUPPLY

3.4 FLUE SYSTEM

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

1. Locate the ue elbow on the adaptor at the top of the

boiler. Set the elbow to the required orientation (rear,

right or left).

2. Measure the distance from the outside wall face to the

elbow (Fig. 3). This dimension will be known as ‘X’.

3. Taking the air duct, mark dimension ‘X’ as shown (Fig. 4).

Measure the length of waste material, and transfer the

dimension to the ue duct (Fig. 4).

4. Remove the waste from both ducts. Ensure that the cut

ends are square and free from burrs.

5. Remove the ue elbow from the adaptor.

IMPORTANT: Check all measurements before cutting.

Clearance to combustible materials when using concentric

system is zero.

Wall Thickness

(X)

Wall Thickness

(X)

Fig. 3

Waste

(X)

Waste

Fig. 4

Air Duct

Flue Duct

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

IMPORTANT: If the equivalent flue length is greater than 1.5 m / 4.92 ft the restrictor MUST be removed from the adaptor

(Fig. 5).

6. Insert the flue duct into the air duct and pass them through the hole in the wall.

7. Take one of the rubber seals and position it on the boiler flue adaptor. Engage the flue elbow on the adaptor and pull

the sleeve up so that it equally covers the joint (Fig. 5).

8. Remove the screws from one of the clips provided. Prise the clip apart and fit it over the seal (Fig. 6). Set the elbow

to the required angle.

9. Refit the screws to the clip and tighten them to secure the elbow. Take the second rubber seal and position it on the

flue elbow.

10. Locate the flue duct clamp on the flue outlet elbow. Draw the flue duct out of the air duct, engage it in the clamp and

tighten the screws (Fig. 7).

11. Draw the air duct out of the wall and align it with the elbow.

Position the seal so that it equally covers the joint (Fig. 8).

12. Remove the screws from the second clip provided. Prise the clip apart and fit it over the seal. Refit the screws to the clip

and tighten them (Fig. 8).

13. Where possible position the clips so that the screws are not visible.

14. Make good between the wall and air duct outside the building.

Fig. 5

Seal

Adaptor

Restrictor

Elbow

Fig. 6

Seal

Clip

Screw

Fig. 7

Flue Duct Clamp

Flue Duct

Air Duct

Seal

Clip

Screw

Fig. 8

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

Flue Options

1. The Baxi boiler can be tted with ue systems as illustrated.

2. The standard ue is suitable only for horizontal applications.

3. Maximum permissible equivalent ue lengths are:

Concentric 4 m / 13.12 ft

Vertical 4 m / 13.12 ft

4. Any additional “in line” bends in the ue system must be taken into consideration.

Their equivalent lengths are:-

Concentric Pipes:

45° bend 0.5 m / 1.64 ft

90° bend 1.0 m / 0.82 ft

The elbow supplied with the standard horizontal ue is not included in any equivalent length calculations

5. The illustrations opposite show examples of maximum equivalent lengths.

6. Instructions for guidance and tting are included in each kit.

Fig. 9a

L max = 4 m / 13.12 ft

L max = 3 m / 9.84 ft

0512_2001

0503_0908/CG1641

L max = 4 m / 13.12 ft L max = 4 m / 13.12 ft L max = 2 m / 6.56 ft L max = 3 m / 9.84 ft

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

3.4.2 TWO PIPE SYSTEM

This type of ducting allows to disengage exhaust ue gases both outside the building and into single ue ducts.

Comburant air may be drawn in at a different site from where the ue terminal is located.

The splitting kit consists of a ue duct adaptor (100/80) and of an air duct adaptor; the latter may be placed either on the

left or on the right of the ue terminal according to installation requirements.

For the air duct adaptor t the screws and seals previously removed from the cap.

The restrictor must be removed in case you install separated ue and air duct terminals.

IMPORTANT: All parts of the exhaust ue duct must be at least 1 in / 25.4 mm from any combustible materials or zero

mm to combustibles if mylar sleeve is used.

The 90° bend allows to connect the boiler to ue-air ducting regardless of direction as it can be rotated by 360°. It can

moreover be used as a supplementary bend to be coupled with the duct or with a 45° bend.

Intake air duct adaptor

ue duct adaptor

clamp

Fig. 10

A 90° bend reduces the total duct length by 0.5 m / 1.64 ft.

A 45° bend reduces the total duct length by 0.25 m / 0.82 ft.

Separated horizontal ﬂue terminals installation options

IMPORTANT: Ensure a minimum downward slope of 1 cm / 0.39 in toward the outside per each metre of duct length

In the event of installation of the condensate collection kit, the angle of the drain duct must be directed towards the

boiler.

Fig. 11

0504_1806/CG_1794

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

(L1 + L2) max = 25 m / 0.82 ft

L max = 8 m / 26.24 ft

The maximum length of the suction duct must

be 10 m / 32.80 ft.

If the ue duct exceeds 6 m / 19.68 ft, the

condensate collection kit (supplied as an

accessory) must be tted close to the boiler.

Fig. 12

Fig. 13

Fig. a Fig. b

Fig. c

3.93 in

100 mm

2.36 in

60 mm

2.36 in

60 mm

7.87 in

200 mm

min. 4.72 in / 120 mm

970109_1301

970109_1201

970109_1101

0610_1204

L max = 11 m / 36.08 ftL max = 12 m / 39.36 ft

Fig. 14

Separated vertical ﬂue terminals installation options

Important: if tting a single exhaust

ue duct, ensure it is adequately insu-

lated (e.g.: with glass wool) wherever

the duct passes through building

walls.

For detailed instructions concerning

the installation of ttings refer to the

technical data accompanying the

ttings.

Split ﬂue air control adjustment

The adjustment of this control is

required to optimise performance and

combustion parameters. The air suction

coupling which may be mounted on

the left or right of the ue duct can be

rotated to adjust excess air according

to the total length of the ue and intake

ducts for the combustion air.

Turn this control clockwise to decrease excess combustion air and anticlockwise to increase it.

To improve optimisation a combustion product analyser can be used to measure the CO

contents of the ue at maximum

heat output, gradually adjusting air to obtain the CO

reading in the table below, if the analysis shows a lower value.

To properly install this device, also refer to the technical data accompanying the tting.

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

Fig. 15

0604/2301/CG1776

Flue duct adaptor

Seal

Air suction coupling

adjust

Index

Opening

CONTROL

POSITION

(L1+L2) MAX

G20 G31

7,4 8,5

0 ÷ 2

2 ÷ 10

10 ÷ 25

Fig. 16 IN COMPLIANCE WITH CGA B149

= AREA WHERE TERMINAL IS NOT PERMITTED

= AIR SUPPLY INLET= VENT TERMINAL

Fig. 16

3.5 FLUE TERMINAL LOCATION

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

* a vent shall not terminate directly above a side-walk or paved driveway which is located between two single family

dwellings and serves both dwellings unless terminated 7ft above sidewalk.

** only permitted if veranda, porch, deck or balcony is fully open on a minimum of 2 sides beneath the oor.

Note: local Codes or Regulations may require different clearances.

The ue terminal must be exposed to the external air and the position must allow the free passage of air across it at all

times. In certain weather conditions the terminal may emit a plume of steam. Avoid positioning the terminal where this

may cause a nuisance.

If the terminal is tted less than 6.56 ft / 2 m above a surface to which people have access, the terminal must be protected

by a terminal guard.

Vent Termination Minimum Clearances

A = 12” clearances above grade, veranda, porch, deck or balcony

B = 12” clearances to window or door that may be opened

D = 18” vertical clearance to ventilated soft located above the terminal within a horizontal distance of 2

feet (60 cm) from the centre line of the terminal

E = 18” clearance to unventilated soft

F = 9” clearance to outside corner

G = 6” clearance to inside corner

H = 4 ft. (U.S.A.) not to be installed above a gas meter/regulator assembly within H horizontally from the centre

line of the regulator

I = 3 ft. (U.S.A.) clearance to service regulator vent outlet

6 ft. (Canada)

J = 9” (U.S.A.) clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other

appliance

K = 3 ft. (U.S.A.) clearance to a mechanical air supply inlet

6 ft. (Canada)

* L = 7 ft. clearance above paved side-walk or a paved driveway located on public property

M = 18” clearance under veranda, porch, deck or balcony

The boiler is not suitable for external installation.

The boiler must be installed on a at vertical wall which is capable of supporting the weight of the boiler.

The boiler may be installed in any room or internal space, although particular attention is drawn to the requirements of the

current electrical provisions with respect to the installation of the boiler in a room or internal space containing a bath or

shower. Where a room-sealed boiler is installed in a room containing a bath or shower, it must not be possible for a person

using the bath or shower to touch any electrical switch or boiler control utilising mains electricity.

The boiler may be installed in a cupboard or compartment, provided it is correctly designed and sufciently ventilated for

that purpose.

3.6 BOILER LOCATION

The boiler is designed for use in a sealed central heating system.

Refer to Technical Data, section 2.8, for details of the heating system volume.

The system should be designed to operate with ow temperatures of up to 185 °F / 85°C. When designing the system,

the pump head, expansion vessel size, mean radiator temperature, etc. must all be taken into account. Refer to the pump

performance table for guidelines.

The boiler is supplied with the following components built in:

Pressure relief valve - set to operate at 43 p.s.i. / 3 bar. The discharge pipe must be routed clear of the boiler to a drain,

in such a manner that it can be seen, but cannot cause injury to persons or property.

Manual operation of relief valve at least once a year.

WARNING: 1. Avoid contact with not water coming/out

2. Prevent water demage

Pressure gauge - to indicate the system pressure to be maintained.

Expansion vessel - with a capacity of 2.2 gal / 10 l and pre-charged to a pressure of 7.25 p.s.i. / 0.5 bar.

By-pass - The boiler incorporates an automatic by-pass. However, where all radiators are tted with thermostatic radiator

valves, an external by-pass must be tted.

3.7 CENTRAL HEATING SYSTEM - FIG. 17

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

Fig. 17

Make up vessel

3.28 ft / 1 metre min

Static head of system

Additional expansion vessel (if

required)

Filling point

DHW outlet

Mains water inlet

System

drain tap

By-pass could be a 0.86 in / 22 mm pipe controlled by a

valve or an uncontrolled radiator

Note

: A drain tap should be installed at the lowest point of the

heating circuit and beneath the appliance.

Heating

by-pass

(if required)

Heating retum

Heating ﬂow

Boiler

Radiator

valve

Vanne

radiateur

Lockshield

valve

Automatic air vent

The system design pressure (cold) should be set to (7.25-14.5) p.s.i. / (0.5-1) bar. This pressure is equivalent to the maxi-

mum static head (see Fig. 17) in bar + 0.3 (14.5 p.s.i. = 1 bar = 10.2 metres of water).

Filling of the system must be carried out in a manner approved by the local Water Undertaking. The system may be lled

as shown in Fig. 18-19.

Drain taps must be used to allow the system to be completely drained.

The heating system should be thoroughly ushed before the boiler is connected and again after the rst heating.

Fig. 18

Toxic chemicals, such as used for boiler treatment, shall not be introduced into the potable water used for space hea-

ting.

3.8 - FILLING THE CENTRAL HEATING SYSTEM

3.9 - TOXIC CHEMICAL

0603_1302/CG_1791

boiler lling tap

boiler drain point

Manometer

0603_1303/CG_1791

310 Fi 1.310 Fi

boiler lling tap

Fig. 19

The boiler, when used in connection with a refrigeration system, must be installed so the chilled medium is piped in parallel

with the boiler with appropriate valves to prevent the chilled medium from entering the boiler.

The boiler piping system of a hot water boiler connected to heating coils located in air handling units where they may be

exposed to refrigerated air circulation must be equipped with ow control valves or other automatic means to prevent

gravity circulation of the boiler water during the cooling cycle.

3.10 - HEATING SYSTEM AND REFRIGERATION SYSTEM

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

1. The boiler is supplied in four boxes, as follows:

Box 1 Cased boiler

Water and gas valves plus washers

Water ttings.

Screws and wall plugs

Wall template

Box 2 90° ue bend with clamp (not required for vertical ue)

Box 3 2.64 ft / 0.75 m ue (for side and rear ue) with terminal

2. Unpack boiler and remove loose items packs.

3. Remove the two screws at the top of the front casing. Slide it up

4. INSTALLATION

4.1 - UNPACKING

4.2 - CLEARANCES REQUIRED FOR SERVICING (FIG. 20)

1.77 in / 45 mm

8.66 in / 220 mm

9.84 in / 250 mm

17.71 in /

450 mm

30.04 in / 763 mm

Minimum

clearance of

17.71 in / 450

from front of

boiler

Minimum

clearances

4.2.1. CLEARANCES REQUIRED FOR CLOSET INSTALLATION

1.77 in /

45 mm

1.77 in /

45 mm

1.57 in /

40 mm

Fig. 21

Fig. 20

13.58 in /

345 mm

925.188.3 - GB

INSTRUCTIONS PERTAINING TO THE INSTALLER

4.2.2. CLEARANCES FOR COMBUSTIBLES

1.77 in / 45 mm

17.71 in /

450 mm

Top and botton 0 in / 0 mm with a ﬁre-

resistant material betwenn the boiler

and the combustibles material.

IMPORTANT:

• The boiler must not be installed on carpeting.

• Keepeng boiler area clear and free from ﬂam-

mable vapors and liquid.

Fig. 22

1 Thoroughly ush out all the water pipework.

Note: Ensure that all the plastic caps are removed from the boiler connections.

2 Secure all the valves/ttings to the boiler- use the washers supplied, ensuring they are facing the rear wall. Fit the union

bends to the valves.

Note:

a. If soldering to the boiler union bends, ensure that the bends are not connected to the valves, otherwise the internal

seals may be damaged.

b. Ensure the 3/4” / 22.2 mm isolating valve with the lter is tted to the heating return connection.

c. Fit the pressure relief valve connection before the isolating valves.

3 Connect the system pipework to the boiler.

Note: Do not forget that the pressure relief valve discharge pipe must be routed clear of the boiler to a drain in such a

manner that it may be seen, but cannot cause injury to persons or property.

4 Ensure that all the valves are closed (spindle ats at right angles to valve) and do not turn on the water or gas supplies

at this stage.

IMPORTANT

The boiler and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing

of that system at test pressures in excess of 1/2 psig (3.5 kPa).

The boiler must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any

pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

The boiler shall be installed such that the gas ignition system components are protected from water (dripping, spraying, rain,

etc.) during appliance operation and service (circulator replacement, condensate trap, control replacement, etc.)

1 Decide upon the position of the boiler taking into account the clearances required for servicing and the ue terminal

position.

2 Tape the template to the wall (ensure it is level and the right way up) and mark the position of the holes for the boiler

mounting bracket and bottom xings. If rear exit ue is used, mark the position of the hole for the ue.

3 If side exit ue is to be used, continue the horizontal centre line of the ue across the wall to the side wall, then along

the side wall (ensure the lines are horizontal). This will give the position of the centre of the hole for the ue.

4 Cut the 4.33 in / 110 mm diameter hole in the wall for the concentric ue.

4.3 - PREPARE THE WALL

1 Lift the boiler and locate it on the wall.

2 Adjust the position of the boiler, as necessary. Fit the screws to secure the boiler in position.

4.4 - FIT THE BOILER

4.5 - CONNECT THE PIPEWORK

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Baxi Luna 3 Comfort 310 Fi Installation And Servicing Instructions

Marque: Baxi

Modèle: Luna 3 Comfort 310 Fi

Catégorie: Chauffe-eau

Taper: Installation And Servicing Instructions

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