Baxi Luna Platinum 1.12 User manual

81
Solutions for centralized heating systems installations
Technical chart
Dimensions
Diagrams
Wiring diagram
Connection to an indirect cylinder for DHW production
Coaxial ue system installation
Coaxial ue system accessories
Dual ue system installation
Dual ue system accessories
Flexible ducting system accessories
Electronics
Programming, setting and digital control
Cascade installation
Schemes for cascade installation
Hydraulic separators and condensate neutralizer kit
Other accessories
Luna Platinum
P.
82
83
84
85
86
87
88
89
90
92
93
94
96
102
115
116

82
1.12 1.18 1.24 1.32
Maximum heating heat input kW 12,4 17,4 24,7 33
Maximum heating heat output 80/60°C kW 12 16,9 24 32
Maximum heating heat output 50/30°C kW 13,1 18,4 26,1 34,9
Minimum heat output 80/60°C kW 2 2,9 4 5,3
Minimum heat output 50/30°C kW 2,2 3,2 4,3 5,8
Energetic efciency 92/42/CEE HHHH HHHH HHHH HHHH
Average efciency (DIN4702-T8) % 109,8 109,8 109,8 109,8
Nominal efciency 80/60°C % 97,8 97,7 97,6 97,6
Nominal efciency 50/30°C % 105,8 105,8 105,7 105,7
Efciency at 30% % 107,8 107,7 107,6 107,6
Minimum ow on the exchanger lt/h 400 400 400 600
Nox class (EN483) 5 5 5 5
Minimum working temperature °C -5 -5 -5 -5
Expansion vessel capacity/pre.charge lt 8/0,8 8/0,8 8/0,8 10/0,8
Quantity of condensing l/h 1,5 2,2 2,9 4
Regulation of water temperature in heating circuit bar 25-80 25-80 25-80 25-80
DHW temperature regulation bar 35-60 35-60 35-60 35-60
Heating system max pressure bar 3333
Coaxial ue system max length ø 60/100 m10 10 10 10
Dual ue system max lenght ø 80 m80 80 80 80
Maximum ue mass ow rate kg/s 0,006 0,008 0.012 0,016
Minimum ue mass ow rate kg/s 0,001 0,001 0,002 0,003
Maximum ue temperature °C 75 75 80 80
Residual ue prevalence m³/h 16,8 23,5 33,4 44,6
Comburent air-ow at Qn Pa 100 100 100 100
Dimensions (h x w x d) mm 760x450x345
Net weight kg 34,5 34,5 34,5 37,5
Gas type Natural Gas/LPG Natural Gas/LPG Natural Gas/LPG Natural Gas/LPG
Power consumption W105 125 120 140
Power consumption in stand-by way W3333
Noise (1 mt far from the boiler) dBA <45db (A) <45db (A) <45db (A) <45db (A)
Grade of protection IPX5D IPX5D IPX5D IPX5D
Luna Platinum
Luna Platinum range of wall-mounted boilers is composed of heating-only condensing boilers
with an output from 12 to 32 kW (at 80°/60°C). The range stands out for its high performance,
ease of use and installation and wide range of accessories for single installation or in cascade.
The core element of these condensing boilers is the heat exchanger in stainless steel AISI
316L. The low water content of the exchanger allows for very limited heat inertia and
therefore a rapid response to variations in heat demand on the system.
The steel surfaces protect the exchanger from the risk of corrosion caused by condensation.

83
Solutions for centralized heating systems installations
Dimensions
S.C. Condensing trap that can be installed on a Ø 21 pipe
M.R. Heating system ow G 3/4”
U.S. Storage tank ow G 3/4”
GAS Gas inlet G 3/4”
E.S. Mains water G 1/2”
R.R. Heating system return G 3/4”
Luna Platinum
1.12 -1.18 -1.24 -1.32
450
760
345
177
131min.
140,5
The various parts of the generator are controlled by a latest generation electronics circuit board which makes for simple, reliable
boiler management using the extractable control panel with wide LCD display.
Daily and weekly programming of heating and DHW functions is possible, as is climatic setting according to the comfort criteria
chosen by the user and the visualisation of error messages relating to any faults. In addition, such boiler electronics allow
technicians to access a series of adjustment parameters and congure the generator so as to optimise efciency depending on
the type of system used.

84
Diagrams
As well as illustrating the heating system layout the gures below enable more detailed analysis of generator behaviour in
various conditions of use.
The pump ow rate-head curve denes the dynamic characteristics of the BAXI circulator inside the hydraulic group. As is known,
the temperature of the return water directly inuences the efciency of condensing boilers: at very low temperatures there is
better use of the latent heat and consequently improved boiler efciency. The graph below shows the variations in efciency, as
the ratio of the ow rate to the heat output of the condensing generator specied, depending on the return temperature of the
boiler. The last gure shows the trend of the ue temperature of the generator depending on the return temperature.
30 35 40
Efficiency of the boiler %
Return temperature of the system °C
EFFICIENCY OF THE BOILER ACCORDING TO THE RETURN TEMPERATURE
30% load
100% load
45 50 55 60
97
98
99
100
101
102
103
104
105
106
107
108
30 35 40 45 50 55 60
30
35
40
45
50
55
60
65
70
75
100% load
30% load
Flues temperature %
Return temperature of the system °C
FLUES TEMPERATURE ACCORDING TO THE RETURN TEMPERATURE
Head
Flow rate
FLOW RATE/HEAD CURVE

85
Solutions for centralized heating systems installations
The gure shows the wiring diagram of the connectors to the circuit board of the boiler. The sensors and functional components
of the generator are controlled by the circuit board to which they are connected by the internal connectors shown in the gure.
Wiring diagram
M1
3
2
1
4
5
6
7
8
12
14
15
16
18
17
19
20
21
11
10
COLOURS OF
THE CABLES:
C= Blue
M= Brown
N= Black
R= Red
G/V=Yellow/Green
V=Green
B=White
G=Grey
Y=Yellow
P=Violet
9
X10 X11 X12 X13 X14 X1 X2
X23
X70
X60
X22
X50
X42X41X40
X30X21X20
BN R
RBN
C
C
V
N
R
C
CR R
C
C
V
R
N
C
C
R
R
MN
CMVN
C
M
V
N
NVMCCC
CC
V
N
MC
M
C
M CG/V
G/V
G/V G/V
G/V
G/V
G/V
G/V
G/V
G/V
G/V
1 15
G/V
G/V
G/V
Y
P
M M P Y
FUSIBILI
L N
1
2
FUSIBILI
M
C
G/V
G/V
G/V
M N
N
M
M
CM
C
M
C
M
CM
V
N
N
V
M2
VV
22
V
V
B R
N
13
b
a
10
9 8 7 6 5 4 3 2 1
7 6 5 4 3 2 1
M3
1 Pump with air separator 9 Hydraulic pressure sensor 17 Coaxial connector
2 Boiler drain tap 10 3-way valve with motor 18 Water-fumes exchanger
3 Pressure gauge 11 Non-return valve 19 Ignition electrode
4 Hydraulic safety valve 12 DHW heat exchanger 20 Burner
5 Boiler lling tap 13 Gas valve 21 Flame detection electrode
6
Flow sensor with water lter and ow limiting device 14 Safety thermostat 22 Air/gas blend manifold
7 DHW priority sensor 15 NTC heating sensor (ow/return) 23 Fan
8 NTC DHW sensor 16 Fumes sensor

86
The boilers are predisposed for the connection of an external cylinder as provided at source with a motorised three-way valve.
The hydraulic connections of the boiler are shown in the gure below.
The DHW over-ride NTC sensor, supplied as an accessory, is connected to terminals 9-10 of the terminal board M2. The sensitive
element of the NTC sensor should be inserted in the dedicated well provided on the boiler itself. The temperature of the
domestic hot water and choice of DHW timer can be made directly from the boiler control panel.
KEY:
A - HEATING UNIT
B - THREE-WAY VALVE
C - HEATING FLOW
D - BOILER FLOW
E - HEATING/BOILER RETURN
G - NTC SENSOR DHW BOILER
F - BOILER UNIT
M2 - CONNECTION TERMINAL BOARD
BOILER UNIT CONNECTION DIAGRAM
M
M2
CDE
1
9
8
7
6
5
4
3
2
10
A
F
G
B
Connection to an indirect cylinder for DHW production

87
Solutions for centralized heating systems installations
Coaxial ue system installation
Max duct length (m) Length reduction with a 90° bend
insertion
Length reduction with a 45° bend
insertion
Ø60/100 Ø80/125
10 25 1 0,5
Examples of installation with horizontal ue system Ø 60/100
Installation examples with LAS chimney ø60/100
Installation example with vertical ue ducts ø60/100

88
Coaxial ue system accessories
Picture Description Code
PP coaxial ue tubes with terminal 60/100
L=750 mm supplied with windproof terminal
and sealing collar
KHG 714059612 .
PP coaxial ue tube with terminal 80/125
L=1000 mm supplied with wind proof terminal
and sealing collar
KHG 714088910 .
PP coaxial ue tube extension
60/100 L=1000 mm KHG 714059515 .
PP coaxial ue tube extension
80/125 L=1000 mm KHG 714088511 .
PP coaxial ue tube extension 60/100 L=500
mm KHG 714119810 .
PP coaxial ue tube extension 80/125 L=500
mm KHG 714088610 .
PP coaxial 90° bend - Ø 60/100 KHG 714059716 .
PP coaxial 87° bend - Ø 80/125 KHG 714088711 .
PP coaxial 45° bend - Ø 60/100 KHG 714059816 .
PP coaxial 45° bend - Ø 80/125 KHG 714088811 .
Internal sealing collar Ø 100 KHG 714017710 .
PP vertical chimney terminal 80/125 KHG 714093510 .
PP reduction from 80/125 to 60/100 KHG 714093910 .
Flat roof tile to be used
with a vertical chimney
terminal 80/125
KHG 714093610 .
Pitched roof tile to be used
with a vertical chimney terminal 80/125; it is
adjustable from 15° to 45°
KHG 714093710 .
Luna Platinum 1.12 - 1.18 - 1.24 - 1.32

89
Solutions for centralized heating systems installations
Dual ue system installation
This type of pipe permits discharge of the combustion products both outside the building and in single ues. The air intake for
combustion may be placed in a different area from that of the discharge. The gaskets and screws of the previously removed from
the stopper should be used for air intake connector.
The 90° bend enables connection of the boiler to the ues and intake pipes in any direction thanks to the fact that they can
rotate by 360°. It can also be used as an additional bend in combination with the pipe or 45° bend. (A-B)
For special installations of the ues inlet/outlet ducts (B), the orienting dual ue system supplied as an accessory, can be used.
This accessory, in fact, can be used to move the inlet and out let in any direction thanks to the possibility of rotation at 360°.
450
177
110120110
159
350
140,5
Installation example with vertical dual ue ducts
Installation examples with horizontal dual ue ducts
198
177
450 140,5
134
110 120 110
The max length of the ue ducts is 15 meters
A
B

90
Dual ue system accessories
Picture Description Code
Orienting dual ue system 710268902 .
PP dual ue system Ø 80 it includes: ue
reduction, intake connection KHG 714059113 .
PP vertical ue system B23 type installation KHG 714111011 .
PP reduction from Ø 80 to Ø 60 KHG 714075610 .
PP tube extension Ø 80 L=1000 mm KHG 714059411 .
PP tube extension Ø 80 L=500 mm KHG 714059910 .
PP tube extension Ø 60 L=1000 mm KHG 714075310 .
PP tube extension Ø 60 L=500 mm KHG 714075210 .
PP 90° bend Ø80 KHG 714059211 .
PP 90° bend Ø60 KHG 714075410 .
PP 45° bend Ø80 KHG 714059311 .
PP 45° bend Ø60 KHG 714075510 .
Luna Platinum 1.12 - 1.18 - 1.24 - 1.32

91
Solutions for centralized heating systems installations
Dual ue system accessories
Picture Description Code
Tube Ø 80 centring kit (pack of 5) KHG 714037411 .
Clamp centring kit Ø 80 KHG 714106110 .
Tube Ø 60 centring kit (pack of 5) KHG 714051510 .
Tube Ø 80 supporting bracket (pack of 5) KHG 714037310 .
Internal sealing collar Ø 80 KHG 714018510 .
External sealing collar Ø 80 KHG 714018411 .
Coaxial vertical chimney terminal 80/125 KHG 714093510 .
Dual ue tubes adapter for coaxial chimney
Ø80/125 KHG 714093810 .
Flat roof tile Ø 125 to be used with a vertical
chimney terminal KHG 714093610 .
Pitched roof tile Ø 125 to be used with a vertical
chimney terminal; it is adjustable from 15° to 45° KHG 714093710 .
Dual ue terminal Ø 80 KHG 714010410 .
Dual ue terminal Ø 60 KHG 714037210 .

92
Flexible ducting system accessories
Picture Description Code
PP exible tube Ø 80 L= 1,5 m KHG 714105710 .
PP exible tube Ø 80 L= 20 m KHG 714105810 .
PP 90° bend Ø 80 with supporting bracket and
condensate drainings KHG 714105910 .
PP 90° bend Ø 80 with supporting bracket KHG 714106010 .
Flexible centring kit Ø 80 (pack of 3) KHG 714106210 .
Triple lips gaskets kit Ø 80 (pack of 5) KHG 714111210 .

93
Solutions for centralized heating systems installations
Set DHW timer
Room temperature
and comfort mode
Room temperature
Date: day, month,
year, time
Outdoor temperature
Boiler/heating
circuit pressure
Navigator Knob/
programming menu
regulation
Easy menu key
1 Standby/on
2 DHW function forced
3 Heating circuit on mode
4 Heating circuit comfort temperature
5 DHW temperature regulation
6 Set-point nominal ACS
Complete “menu” button
1 Information
2 Date and time
3 Control panel
4 Set heating timer 1
5 Set heating timer 3
6 Set DHW timer
7 Set auxiliary timer
8 Heating 1 holidays
9 Heating circuit
10 DHW circuit
11 Instantaneous heater ACS
12 Error
13 Diagnostic parameters
Set heating timer
Heating zones
DHW mode
enabled Heating mode on
Automatic
Data transmission
(with WIRELESS
device only)
2 levels of heating
temperature:
comfort/reduced
Baxi has developed an innovative extractable control panel for the new Platinum series of boilers with a large, easy
to read display with words and symbols. The back-lit panel is easy to see and use thanks to the central joystick
and two dedicated pushbuttons for setting comfort parameters and for full programming of the device. Evolved
electronics permit remote interfacing with the boiler using varied technologies to create a complete integrated
system.
Electronics: a latest-generation interface

94
Programming, setting and digital control
Figure Model Description Code
Room thermostat
Modulating room thermostat, version with wires (3led interface
with support Cod. 710234001 .) or wireless (5led interface with
support Cod. 710244101 .) If the control panel is installed in
the boiler, it is necessary to buy the wireless aerial (see below)
Dimensions: 105x98 mm
Cod. 710106101 .
(with wires)
Cod. 710304401 .
(wireless)
Room thermostat with
timer
Modulating room thermostat with timer, version with wires
(3led interface with support Cod. 710234001 .) or wireless
(5led interface with support Cod. 710244101 .) Advanced DHW
managing. Dimensions 120x98 mm
Cod. 710298001 .
(with wires)
Cod. 710297901 .
(wireless)
3LED interface with
support
This accessory permits wired installation of the control panel on
the wall in a representative room of the home.
The control panel can be used to control the temperature
of the room to be heated and to programme and control a
heating system comprising boilers in cascade and various low
temperature zones.
710234001 .
5LED interface with
support
This accessory permits wireless installation of the control panel
on the wall in a representative room of the home.
The control panel can be used to control the temperature
of the room to be heated and to programme and control a
heating system comprising boilers in cascade and various low
temperature zones.
710244101 .
Wireless aerial This accessory permits installation of the WIRELESS outdoor
sensor. If the 5 LED interface circuit with support is installed
this accessory need not be installed. 710234301 .
Outdoor sensor kit
(QAC34)
The outdoor sensor kit QAC34 is a temperature sensor which
communicates the outside temperature to the boiler so that
it can adapt the ow temperature to the effective heating
requirements of the room as set by the user.
710487301 . (with
wires)
710302701 . (wireless)
Accessory for managing
mixed systems and solar
panels (AGU 2.550)
By using this accessory the device can manage
• Heating circuits at different temperatures.
• Solar systems.
• Other specic applications (swimming pool, DHW recirculation
pump, etc).
This accessory is able to directly manage the circuit components
(pump, temperature sensor, mixer valve etc) up to a maximum
of 3 independent relay outputs, 2 temperature sensors and 1
control input. Several predened functions may be used which
facilitate conguration of the system.
710034501 .

95
Solutions for centralized heating systems installations
Figure Model Description Code
Accessory for managing
systems with boilers
connected in cascade.
(AVS 75)
Use of the expansion module AVS75 allows management of a
heating system with up to 16 boilers connected in cascade and
one separate storage heater for the supply of DHW.
This accessory, connected directly to one of the boilers in
cascade, is able to directly manage the circuit components up
to a maximum of 3 independent relay outputs, 2 temperature
sensors inputs, 1 high voltage connector for the thermostat limit
and 1 control input (such as TA).
710503701 .
Bus interface kit (OCI345)
The OCI345 interface is an electronic device enabling the
communication via bus (two cables) between boilers connected in
cascade or between one boiler (or the boilers in cascade) and a
mixed zone controller RVS46.
710025602 .
Climate regulator for
mixed zones RVS46
Heat adjustment control unit permits piloting of a mixed zone
(typically low temperature zone). It can manage a mixer valve,
pump and the ow sensor of the zone controlled.
In addition it can exchange data with the circuit board of the
boiler via the connection bus.
Soon available
Heating ow/return sensor for AGU 2.550
(QAD36) KHG 714078910 .
Hot water temperature sensor KHG 714076810 .
Sensor for solar controller LNC 710000040 .

96
Cascade installation
Flue tube kit for 2 boilers
ø 125 ø 160 ø 200
Flue tube kit for third boilers
ø 125 ø 160 ø 200
Vertical ue system
B23 type of
installation
Shutter kit 110/80
with condensing trap
Manifold pipes third
Platinum boiler
in cascade
Manifold pipes 2
Platinum boilers
in cascade
See complete list of accessories codes on page 116
for Luna Platinum 1.12 - 1.18 - 1.24 - 1.32

97
Solutions for centralized heating systems installations
N° of boilers
in cascade 1.12 1.18 1.24 1.32
2
Nominal output
Total 80°/60°C (kW) 24 33,8 48 64
Manifold pipe Ø mm (A) 125 125 125 125
Chimney ue Ø mm (B) -H= 5-10 m 125 125 125 125
Chimney ue Ø mm (B) -H=10-15 m 125 125 125 125
Chimney ue Ø mm (B) -H=15-20 m 125 125 125 125
3
Nominal output
Total 80°/60° C (kW) 36 50,7 72 96
Manifold pipe Ø mm (A) 125 125 125 125
Chimney ue Ø mm (B) -H= 5-10 m 125 125 125 125
Chimney ue Ø mm (B) -H=10-15 m 125 125 125 125
Chimney ue Ø mm (B) -H=15-20 m 125 125 125 125
4
Nominal output
Total 80°/60° C (kW) 48 67,8 96 128
Manifold pipe Ø mm (A) 125 125 125 125
Chimney ue Ø mm (B) -H= 5-10 m 125 125 125 125
Chimney ue Ø mm (B) -H=10-15 m 125 125 160 160
Chimney ue Ø mm (B) -H=15-20 m 160 160 160 160
2 m
A
B
H
• Distance of the manifold from the rst boiler to
the vertical chimney 2 meters
• Shutter kit installed in each boiler in cascade
• The pipes of the chimney and the connections
between the manifold pipes of the cascade and
the chimney are not supplied by BAXI
• The calculation has been made assuming a PP
“double wall” ue duct
The chart in the following page indicates the diameters of the manifold pipes and of the chimney for various configurations of
boilers in cascade and for different heights of the chimney.
Remarks
Information for the calculation of the diameter of the
manifold pipes (A) and of the chimney (B)

98
Connection of the interface bus for boilers in cascade (OCI345)
The interface bus OCI345 is an electronic device enabling communication with and therefore the management of boilers in
cascade. Thus used, the communication bus also permits remote monitoring and management of the cascade. The interface bus
slot is inside the control panel of each boiler in the cascade. There are two possible positions of the accessory inside the panel:
1. If the extension module AGU2.550 has not already been installed in the boiler then remove the protective cover on the back
of the command panel on the boiler, place the OCI345 interface in the relative slot and , once the boiler 's electronic circuit has
been turned on, connect the interface using the cable provided to the connector of the electronic circuit X30.
2- If the extension module AGU2.550 has already been installed in the boiler then access the electronic circuit by removing the
protective cover on the panel and slot in the OCI345 interface as illustrated below making sure to connect the cable provided to
the connector of the electronic circuit X30.
X30
OCI 345
LPB BUS
X30
OCI 345
LPB BUS

99
Solutions for centralized heating systems installations
Connection of extension module AGU2.550
With extension module AGU2.550 the heater can manage either a mixed zone, controlling the mixer valve, zone probe and
pump, or a solar plant by means of the probes on the manifold, heater and solar pump. This accessory is installed in the boiler
dashboard. You must remove cover A from dashboard B. Raise dashboard B and hook up the at cable between connector X50
of accessory AGU2.550 and connector X41 of the boiler board, passing through the hole in dashboard B. Close dashboard B and
insert the AGU2.550. Carry out the electrical hook-ups necessary for installation and x the new cover C found in the pack.

100
Connection of expansion module AVS75
Expansion module AVS75 is a device which, in a heating system run with LUNA PLATINUM boilers, supplies several
programmable inlets/outlets necessary to complete the heating system.
As for individual installations, the module AVS75 can supply the boiler with the inlets/outlets necessary for management of a
mixed zone or, alternatively, a solar plant.
The accessory is connected to the cascade of LUNA PLATINUM boilers by means of a local bus through which the information
regarding the devices connected is received and transmitted.
For each individual boiler a maximum of three expansion modules can be installed, one of which is the accessory AGU2.550 and
the other two AVS75 for the management of a maximum of three mixed zones.
The AVS75 may also be used to manage solar plant by means of the boiler. In this case the connections supplied by the
expansion module (AVS75) are the two inlets related to the probe on the manifolds and to the probe on the heater, whereas the
outlet regards control of the solar pump (see gure).
N
L
EX21 FX23 L
C S T
QX23 QX22L N QX21 N L
N L
X50
H2 M BX22 M BX21
X30
nnn
A
D
C
B
M
ON
1 2
1 2
1 2 3
230V
A Flow sensor QAD36
B Mixing valve
C Mixed zone pump
D Safety thermostat
A Tank sensor (suppllied as
optional)
B Collectors sensor (suppllied
as optional)
C Solar circuit pump (suppllied
as optional)
In the case of a mixed zone, hook up the safety thermostat between the “FX23-L” terminals and jump the terminals “EX21-FX23”. In this
way the circuit pump connected to relay “QX23” is internally connected in series with the safety thermostat.
Should it be necessary to use relay outlet “QX23” for functions other than those envisaged for the mixed zone, jump terminals “FX23-L”.