Baxi Luna HT Manuel utilisateur

Wall-mounted condensing boilers

Installer’s and User’s Instructions

UNI EN ISO 9001

CERTIFICAZIONE DEI SISTEMI

QUALITA' DELLE AZIENDE

BAXI

S.p.A.

, one of the leading European enterprises to produce central heating and hot water devices for domestic use (wall-mounted gas-

operated boilers, floor-standing boilers, electrical water-heaters and steel heating plates) has obtained the CSQ certificate of conformity to the UNI

EN ISO 9001 norms. This certificate 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.

Dear Customer,

We are sure your new boiler will comply with all your requirements.

Purchasing one of the BAXI products satisfies your expectations: good

functioning, simplicity and ease of use.

Do not dispose of this booklet without reading it: you can find here

some very useful information, which will help you to run your boiler

correctly and efficiently

Do not leave any parts of the packaging (plastic bags, polystyrene, etc.) within children’s reach as

they are a potential source of danger.

BAXI boilers bear the CE mark in compliance with the basic requirements as laid

down in the following Directives:

- Gas Directive 90/396/CEE

- Performance Directive 92/42/CEE

- Electromagnetic Compatibility Directive 89/336/CEE

- Low Voltage Directive 73/23/CEE

Contents

Instructions prior to installation 4

Instructions prior to commissioning 4

Commissioning of the boiler 4

Filling the boiler 10

Turning off the boiler 10

Prolonged standstill of the system. Frost protection 11

Gas change 11

Servicing instructions 11

Instructions pertaining

to the user

General information 12

Instructions prior to installation 12

Boiler installation 13

Boiler size 13

Fittings present in the packaging 14

Installation of flue and air ducts 14

Connecting the mains supply 18

Gas change modalities 24

Setting the boiler parameters 26

Control and operation devices 27

Positioning of the ignition and flame sensing electrode 28

Check of combustion parameters 28

Activating the flue-sweeper function 28

Output / pump head performances 29

How to disassemble the DHW heat exchanger 29

Cleaning the cold water filter 30

Annual service 30

Boiler schematic 31-32

Illustrated wiring diagram 33-34

Technical data 35

Instructions pertaining

to the installer

Instructions pertaining to the user

To correctly light the burner proceed as follows:

1) provide power supply to the boiler;

2) open the gas cock;

3) follow the directions given below regarding the adjustments to be made at the boiler control panel.

3. Commissioning of the boiler

2. Instructions prior to

commissioning

Initial lighting of the boiler must be carried out by a licensed technician. Ensure the following operations

are carried out:

a) compliance of boiler parameters with (electricity, water, gas) supply systems settings.

b) compliance of installation with the laws and regulations in force.

c) appropriate connection to the power supply and grounding of the appliance.

The names of authorized Service Centres are listed on the accompanying sheet.

Failure to observe the above will render the guarantee null and void.

Prior to commissioning remove the protective plastic coating from the unit. Do not use any tools or

abrasive detergents as you may spoil the painted surfaces.

This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The

boiler must be connected to a central heating system and to a domestic hot water supply system in

compliance with its performances and output power.

Have the boiler installed by a Qualified Service Engineer and ensure the following operations are

accomplished:

a) accurate purging of the whole pipework in order to remove any deposits.

b) careful checking that the boiler is fit for operation with the type of gas available. For more details

see the notice on the packaging and the label on the appliance itself.

c) careful checking that the flue terminal draft is appropriate; that the terminal is not obstructed and

that no other appliance exhaust gases are expelled through the same flue duct, unless the flue is

especially designed to collect the exhaust gas coming from more than one appliance, in conformity

with the laws and regulations in force.

d) careful checking that, in case the flue has been connected to pre-existing flue ducts, thorough

cleaning has been carried out in that residual combustion products may come off during operation

of the boiler and obstruct the flue duct.

1. Instructions prior to

installation

3.1 Description of keys

(2) This key can be pressed to set the central heating water output temperature as described

in point 3-3.

(3) This key can be pressed to set the domestic hot water temperature as described in point 3-4.

(10) Central heating mode operating key

The key can be pressed to activate four boiler central heating operating modes; these

modes are identified by a black cursor line underneath the relative symbol on the display,

and are as follows:

KEYS DISPLAY SYMBOLS

Central heating mode setting key

Data display reset key

Parameter setting key (increase value)

Parameter setting key (decrease value)

Program access and scroll key

Program access and scroll keys

Reset key

Domestic hot water temperature setting

key

Central heating water temperature setting

key

Domestic hot water on/off key

Resettable alarm warning

Flame present (on)

Outdoor temperature

Standby (off)

Operation in manual mode at minimum

temperature

Operation in manual mode at the

maximum temperature set

Operation in automatic mode

Operation in central heating mode

Operation in domestic hot water mode

020503_1100

Figure 1

SECONDARY display

MAIN display

020503_0800

Figure 2

a) Automatic operation. Operation of the boiler is controlled by the timed program as described

in point 3-5.1 “Daily timed program for operation of the central heating system”;

b) Manual operation at the maximum temperature set. The boiler comes into operation

regardless of the timed program set. The operating temperature is that set using the key

(point 3-3: “Setting the maximum central heating temperature”);

c) Manual operation at minimum temperature. The operating temperature is that set in

point 3-6: “setting the minimum central heating temperature”.

d) standby. The boiler does not work in central heating mode, although the antifreeze function

is still enabled.

(1) Domestic hot water on/off key: This key can be pressed to activate or deactivate this

function, which is identified on the display by a black cursor line under the symbol .

(4) Reset key. In case of a fault, referred to in point 3-7 “Faults and resetting the boiler”, the

boiler can be restarted by pressing this key for at least two seconds.

If this key is pressed with no fault present, the display will show the message “E153”, and

the same key has to be pressed again (for at least two seconds) to restart the boiler.

(9) Data key. This key can be pressed repeatedly to display the following information:

- Temperature (°C) of the domestic hot water ( );

- outdoor temperature (°C) ( ); only provided with the outdoor temperature sensor probe

connected.

Press either of the keys to return to the main menu.

3-2. Setting the time

a) Press either of the keys to access the programming function;

the display will show the letter P followed by a number (program line);

020503_0700

Figure 3

Dash

“Automatic mode”

active

b) press the keys until the display shows P1, referring to the time to be set;

c) press the keys to set the time; on the display, the letter P will start to flash;

d) press the key to save and exit the programming function;

3-3 – Setting the maximum central heating temperature

-Press the key (2-figure 1) to set the central heating water temperature;

-Press the keys to set the temperature required;

-press either of the keys (1 or 10 - figure 1) to save and return to the main menu.

N.b – With the outdoor sensor probe connected, the key (2 - figure 1) can be used to shift the

central heating curve. Press the keys to decrease or increase the room temperature in

the premises to be heated.

3-4 Setting the maximum domestic hot water temperature

-Press the key (3-figure 1) to set the maximum domestic hot water temperature;

-Press the keys to set the temperature required;

-press either of the keys (1 or 10 - figure 1) to save and return to the main menu.

3-5– Setting the daily program for operation in central heating and domestic hot water modes

3-5.1 Setting the daily times for central heating mode operation

-Press either of the keys to access the programming function;

a) press these keys until the display shows P11, referring to the program start time;

b) press the keys to set the time;

-press the key; the display will show P12, referring to the program end time;

-repeat the operations described in points a and b until the third and last cycle is reached (program

line P16);

-press the key to save and exit from the programming function.

3-5.2 Setting the daily times for domestic hot water mode operation

-Carry out the operations described in point 3-5.1 for program lines 31 to 36.

3-6 - Setting the minimum central heating temperature

-press either of the keys to access the programming function;

-press these keys until the display shows P5, referring to the temperature to be set;

-press the keys to set the temperature required.

This operating mode is enabled when minimum temperature central heating mode “ ” is activated

or when the daily central heating program does not require heat.

N.b – With the outdoor sensor probe connected, parameter P5 can be used to set the minimum

room temperature in the premises to be heated.

3-8 - Fault warnings and resetting the boiler

If a fault occurs, a flashing warning code appears on the display.

The fault warnings appear on the main display (figure 1 a) together with the symbol (Figure 4).

To reset, press the reset button for at least two seconds.

Range

0…23:59

25..80

00:00…24:00

0...1

8...30

1 ... 40

-31 ... 31 K

Factory

setting

———-

6:00

22:00

0:00

24:00

0:00

Parameter description

Time of day setting

Minimum central heating temperature setting (°C)

Start of first daily period of automatic central heating

End of first daily period of automatic central heating

Start of second daily period of automatic central heating

End of second daily period of automatic central heating

Start of third daily period of automatic heating

End of third daily period of automatic central heating

Start of first daily period of domestic hot water production

End of first daily period of domestic hot water production

Start of second daily period of domestic hot water production

End of second daily period of domestic hot water production

Start of third daily period of domestic hot water production

Fine End of third daily period of domestic hot water production

Reset of daily central heating and domestic hot water production programs (factory

settings). Press the - + keys together for about 3 seconds; the number 1 appears on

the display. Confirm by pressing either of the keys

Temperature for automatic switching from SUMMER toWINTER modes with outdoor

temperature probe connected. When this temperature value is set, the boiler

automatically switches from summer to winter mode when the outdoor sensor detects

an average temperature value, calculated over 24 hours, higher than the set point.

HC1 circuit heating curve gradient

(parameter for the installation engineer).

HC2 circuit heating curve gradient

(parameter for the installation engineer).

HC1 circuit parallel shift

(parameter for the installation engineer).

HC2 circuit parallel shift

(parameter for the installation engineer).

Parameter

P11

P12

P13

P14

P15

P16

P31

P32

P33

P34

P35

P36

P45

P516

P532

P533

P534

P535

3-7 - Table of user-settable parameters

020503_0500

Figure 4

020503_0600

Figure 4.1

Fault warnings appear on the secondary display (figure 1 b) alternating with the time, both of them

flashing (figure 4.1). It is not possible to reset malfunction warnings which appear on the secondary

display as the cause of the alarm has first to be removed.

All the faults are displayed in order of importance; if several faults occur simultaneously, the first to

be displayed is the one with highest priority. After the cause of the first fault has been removed, the

second one will be displayed, and so on.

If any given fault occurs frequently, contact the authorised Service Centre.

action required

call the authorised service centre.

call the authorised service centre

press the reset key (for about 2 seconds: if this device is triggered

repeatedly, call the authorised service centre)

call the authorised service centre

press the reset key (for about 2 seconds); if the fault persists, call the

authorised service centre)

call the authorised service centre

switch off the electricity supply to the boiler for 10 seconds; if the

fault persists, call the authorised service centre)

press the key again (about 2 seconds)

Press and hold reset button (2 seconds approx.) then press again when

warning E153 appears

call the authorised service centre.

check that the system is at the rated pressure. (refer to the section on

filling the system). if the fault persists, call the authorised service centre.

If the warning is displayed for more than 3 seconds, press and hold the

reset button (2 seconds approx.) then press again when the warning

E153 appears

Fault description

outdoor temperature probe sensor failure

ntc output sensor failure

domestic hot water ntc sensor failure

safety or flue gas thermostat tripped

floor thermostat tripped

no gas

fan electricity supply failure

boiler circuit board error

the reset key has been pressed

inappropriately

internal error on boiler circuit module

fan speed threshold not reached

no hydraulic differential pressure

switch enabling signal

saving parameters

3.9 Fault warnings table

Fault

code

110

132

133

135

151

153

154

160

164

183

To shut down the boiler switch off the electrical supply to the appliance.5. Turning off the boiler

The boiler is equipped with a hydraulic differential pressure switch that will inhibit the operation of

the boiler in the event of the pump seizing or running dry.

Important: Regularly check that the pressure displayed by the pressure gauge (11) is 1 to 1.5 bar, with

boiler not operating. In case of overpressure, open the boiler drain valve.

In case the pressure is lower open the boiler filling tap (Figure 5a or 5b).

We recommend you open the tap very slowly in order to let off the air.

In case pressure drops occur frequently have the boiler checked by a Qualified Service Engineer.

4. Filling the boiler

020503_0400

Boiler filling tap Boiler drain valve

Figure 5a

LUNA HT 280 - HT 330

0010270500

Figure 5b

LUNA HT 1.120 - HT 1.240 - HT 1.280

Boiler filling tap

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