Beretta POWER MAX 50 P DEP User manual

Installation and Operation Manual
Condensation | Heating module
POWER MAX
Installation and Operation Manual
EN

2
RANGE
MODEL CODE
POWER MAX 50 P DEP 20128429
POWER MAX 50 P 20128430
POWER MAX 65 P 20128431
POWER MAX 80 P 20128432
POWER MAX 100 20128433
POWER MAX 110 20128434
POWER MAX 130 20128435
POWER MAX 150 20128436
ACCESSORIES
For a complete list of accessories and details of their com-
patibility, refer to the Catalogue.
ENGLISH
Dear heating engineer,
congratulations on having chosen a thermal module B,
a quality product that is designed to give dependable, ef-
cient and safe service and to provide comfort in the home
for many years to come.
This manual provides information that is essential to the in-
stallation of the appliance. Used in conjunction with your
own knowledge and expertise it will enable you to install the
appliance quickly, easily, and correctly.
Please accept our thanks and our congratulations on your
choice of product.
Beretta
CONFORMITY
thermal modules POWER MAX comply with:
- Gas Appliances Directive 2009/142/EC (until 20 April
2018) and Regulation (EU) 2016/426 (from 21 April
2018)
- Directive 92/42/EEC on efciency requirements and
Annex E and Pres. Republic Decree n. 412, 26 Au-
gust 1993 (****)
- Electromagnetic Compatibility Directive 2014/30/EU
- Low Voltage Directive 2014/35/EU
- Ecodesign Directive 2009/125/CE for energy-related
products
- Energy Labelling Directive 2010/30/EU
- Delegated Regulation (EU) N. 811/2013
- Delegated Regulation (EU) N. 813/2013
- Standard for gas-red heating boilers - General re-
quirements and tests - EN 15502-1
- Specic standard for type C appliances and type B2,
B3 and B5 appliances of nominal heat input not ex-
ceeding 1000 kW - EN 15502-2/1
- SSIGA Gas Appliance Directive G1
- AICAA Fire prevention requirements
- CFST LPG Directive Part 2
- VARIOUS cantonal and communal provisions on air
quality and energy saving.

This manual, Code 20133145 - Rev. 3 (06/18) comprises 60 pages.
3
CONTENTS
The following symbols are used in this manual:
b
CAUTION! = Identies actions that require caution
and adequate preparation.
a
STOP! = Identies actions that you MUST NOT do.
Thismanual,Code
-Rev.
comprises
pages.
1 GENERAL INFORMATION . . . . . . . . . . . . . . . 4
1.1 General Safety Information . . . . . . . . . . . . . . . . . 4
1.2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Description of the appliance . . . . . . . . . . . . . . . . 5
1.4 Safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Identication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 System layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.7 Technical specications . . . . . . . . . . . . . . . . . . 10
1.8 Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.9 Water circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.10 Positioning the temperature sensors . . . . . . . . . 12
1.11 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 14
2.1 Unpacking the product . . . . . . . . . . . . . . . . . . . 14
2.1.1 Positioning of labels. . . . . . . . . . . . . . . . . . . . . . 14
2.2 Overall dimensions and weights . . . . . . . . . . . . 14
2.3 Installation premises . . . . . . . . . . . . . . . . . . . . . 15
2.3.1 Recommended minimum distances . . . . . . . . . 15
2.4 Installation in older systems and systems
requiring modernisation. . . . . . . . . . . . . . . . . . . 15
2.5 Moving and removing the packing . . . . . . . . . . 16
2.6 Thermal module assembly. . . . . . . . . . . . . . . . . 16
2.7 Water connections . . . . . . . . . . . . . . . . . . . . . . . 18
2.8 Typical water system schematics . . . . . . . . . . . 19
2.9 Gas connections . . . . . . . . . . . . . . . . . . . . . . . . 22
2.10 Discharge of combustion products . . . . . . . . . . 22
2.10.1 Preparation for the condensate drain . . . . . . . . 24
2.11 Neutralising the condensate . . . . . . . . . . . . . . . 24
2.11.1 Water quality requirements . . . . . . . . . . . . . . . . 24
2.12 System lling and emptying. . . . . . . . . . . . . . . . 25
2.12.1 Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.12.2 Emptying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.13 Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.14 Electrical connections . . . . . . . . . . . . . . . . . . . . 29
2.14.1 USER navigation MENU. . . . . . . . . . . . . . . . . . . 32
2.15 Navigation Menu INSTALLER /
MANUFACTURER . . . . . . . . . . . . . . . . . . . . . . . 34
3 COMMISSIONING AND MAINTENANCE . . . 39
3.1 Preparing for initial startup. . . . . . . . . . . . . . . . . 39
3.2 Initial startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.2.1 Switching the appliance on and off . . . . . . . . . . 39
3.2.2 Password access. . . . . . . . . . . . . . . . . . . . . . . . 39
3.2.3 Setting the heating parameters . . . . . . . . . . . . . 40
3.2.4 Setting the domestic hot water parameters. . . . 42
3.3 Checks during and after initial start-up . . . . . . . 43
3.4 Error List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.4.1 Permanent Errors . . . . . . . . . . . . . . . . . . . . . . . . 44
3.4.2 Temporary Errors . . . . . . . . . . . . . . . . . . . . . . . . 44
3.4.3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.5 Transformation from one gas type to another . . 45
3.6 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.7 Temporary or short-term shut-down . . . . . . . . . 48
3.8 Preparing for extended periods of disuse . . . . . 48
3.9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.10 Cleaning and removing internal components . . 49
3.11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 53
4 SYSTEM MANAGER . . . . . . . . . . . . . . . . . . . 54
4.1 Putting into service . . . . . . . . . . . . . . . . . . . . . . 54
4.2 Temporary or short-term shut-down . . . . . . . . . 55
4.3 Preparing for extended periods of disuse . . . . . 55
4.4 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.6 Useful information . . . . . . . . . . . . . . . . . . . . . . . 56
5 RECYCLING AND DISPOSAL. . . . . . . . . . . . 57

4
1 GENERAL INFORMATION
1.1 General Safety Information
b
After removing the packaging, check the condition
and completeness of the supply. If there are any
problems, contact the company Bthat sold the
equipment.
b
This product must be installed by a legally qualied
heating engineer. On completion of the installation,
the installer must issue the owner with a declaration
of conformity conrming that the installation has been
completed to the highest standards in compliance
with the instructions provided by Bin this instruc-
tion manual, and that it conforms to all applicable
laws and standards.
b
This product must only be used for the purpose
for which it is designed and made, as specied by
B. Bdeclines all responsibility, contractual or
other, for damage to property or injury to persons or
animals caused by improper installation, adjustment,
maintenance or use.
b
In the event of a water leak, disconnect the thermal
module from the main power supply, shut off the water
supply and promptly notify the Technical Assistance
Centre B or professionally qualied personnel.
b
Periodically check that operating pressure in the wa-
ter circuit is over 1 bar but below the maximum limit
specied for the boiler. If this is not the case, contact
Technical Assistance Centre Bor a professional-
ly qualied heating engineer.
b
The following operations shall be necessary if the
thermal module is not used for a long period of time:
- Switch the boiler OFF at the control panel
- Turn the main system switch "off"
- Close the fuel cock and heating circuit water cock
- Drain the central heating circuit if there is any risk of
freezing.
b
Maintenance must be performed on the thermal mod-
ule at least once a year.
b
This manual is an integral part of the appliance and
must therefore be kept with care and must ALWAYS
accompany the thermal module, even when it is
passed on to another owner or user or transferred to
another installation. If it is lost or damaged, please
contact your local Technical Assistance Centre B
for a new copy.
b
This manual must be read carefully so as to ensure
the correct and safe installation, operation and main-
tenance of the appliance. The Owner must be ade-
quately informed and trained on how to operate the
appliance. Make sure that he/she is familiar with all
the information required for safe system operation.
b
The thermal module, before being connected to the
hydraulic system, the gas network, and the electrical
system, may be exposed to temperatures ranging
from 4°C to 40°C. After it can activate the Frost Pro-
tection function, it can be exposed to temperatures
ranging from -20°C to 40° C
b
Regularly check that the condensate drain is free
from obstruction.
b
We recommend cleaning inside the exchanger once
a year, extracting jet and burner and removing any
installation debris by suction. This operation will be
done by personnel from the Technical Assistance
Centre only.
1.2 Precautions
The operation of any appliance that uses fuel, electrical
power and water demands that a number of fundamental
safety precautions be respected:
a
Do not allow children or inrm persons to operate the
system unsupervised.
a
It is forbidden to use electrical devices or equipment,
such as switches, appliances, etc. if there is a smell
of gas or un-burnt products. If so:
- Ventilate the room, opening doors and windows
- Close the fuel shut-off cock
- Report the fault immediately to the B's Technical
Assistance Centre or a professionally qualied heat-
ing engineer.
a
Do not touch the boiler while barefoot or wet.
a
Any technical or cleaning activity is forbidden before
disconnecting the appliance from the main power
supply by switching the system's master switch and
the appliance's main switch to the "OFF" position.
a
Do not tamper with or adjust the safety or control de-
vices without prior authorisation and instructions from
the manufacturer.
a
Do not plug or block the condensate drain outlet.
a
Never pull, disconnect, or twist the electrical cables
coming from the appliance even if it is disconnected
from the mains electricity supply.
a
Do not obstruct or restrict the vents in the room where
the boiler is installed. Adequate ventilation is essen-
tial for correct combustion.
a
Do not expose the appliance to weather elements
(without using the dedicated accessory). It has been
designed for indoor use.
a
Do not switch off the appliance if the outdoor temper-
ature may drop to below ZERO (frost hazard).
a
Do not leave ammable containers and substances
in the room where the device is installed.
a
Do not dispose of packaging material into the envi-
ronment, or leave it within the reach of children, since
it can become a potential hazard. Dispose of packag-
ing material in compliance with applicable legislation.
a
Do not activate the thermal module without water.
a
Individuals without specic qualications and skills
are not allowed not remove the thermal module's
casing.

5
1.3 Description of the appliance
POWER MAX it is a condensing, pre-mixed thermal module
consisting in a modulating thermal element.
It is available in various models, ranging from 35kW to
131kW.
Optimal combustion management supports high yields
(over 109%, calculated over NVC, in condensation re-
gime) and low polluting emissions (Class 6 pursuant to EN
15502).
The thermal module is designed for open chamber opera-
tion, but can be converted to sealed chamber operation by
tting a dedicated accessory.
The appliance in standard conguration is envisaged for
indoor installation to guarantee an IPX4D protection level.
b
Appliances may be cascaded POWER MAX to reach
a maximum power of 1.12 MW.
The appliance's key technical features are
- pre-mix burner with constant air-gas ratio;
- helicoidal heat exchanger with double coil with
smooth stainless steel pipe, to guarantee good corro-
sion resistance and the option of operating with high
∆ts (up to 40°C), reducing system set-up times;
- power from 35 to 131 kW;
- maximum ue gas output temperature 100°C;
- microprocessor management and control with self-di-
agnostics, shown by means of a display, and logging
of main errors;
- Anti-Frost function;
- pre-setting for room/heat demand thermostat for low
and high temperature ranges;
- option to manage a CH circuit and a DHW circuit with
storage tank;
- high-efciency and high residual discharge head cir-
culator (for models up to 70kW; a circulator is availa-
ble as an accessory upon request for other models);
- climate control function (available only when using
the outdoor temperature sensor accessory).
1.4 Safety devices
All appliance functions are electronically controlled by a
dual processor technology board approved for safety func-
tions.
Any malfunction results in the appliance being shut down
and the automatic closure of the gas valve.
The following is installed on the water circuit:
-
Safety thermostat .
- Flow sensor capable of monitoring the main circuit's
ow on an ongoing basis and of stopping the appli-
ance in the event of insufcient ow.
- Temperature probes on delivery and return lines that
measure the temperature difference (∆t) between
input and output uid and enable activation of the
control.
- Minimum pressure switch .
The following is installed on the combustion circuit:
- Gas solenoid in class B+C , with pneumatic gas ow
compensation depending on the suction line's air
ow rate.
- Ignition/detection electrode .
- Flue gases temperature probe .
b
The triggering of safety devices indicates the mal-
function of a potentially hazardous thermal module.
Therefore, contact Technical Assistance Centre im-
mediately. After a brief pause, it is possible to try and
restart the appliance (see Paragraph "Initial startup").
b
Safety devices must be replaced by Technical Assis-
tance Centre, using only original parts. Refer to the
spare parts catalogue supplied with the appliance.
After making the repair, check that the appliance is
working properly.
a
The appliance must not be put in service, even tem-
porarily, when tampered safety devices are not in op-
eration or have been tampered with.

6
1.5 Identication
The products are identied by:
1 Technical data plate
It indicates the technical and performance data.
2 Gas label .
Is located on the appliance's side and states the type of fuel used and the country of destination.
2
Paese di destinazione:
Tipo di apparecchio
Caldaia categoria
:
:
B23
II2H3+
Pressioni di alimentazione gas:
Regolazione effettuata dal costruttore:
G20 - 20 mbar - 2H METANO
ATTENZIONE
Leggere attentamente il libretto istruzioni
prima di installare e mettere in servizio
l'apparecchio.
(Laterale DX)
Temperatura ambiente:
min. -10°C max. 50°C
Questo apparecchio puó essere installato e
funzionare all'aperto o solo in locali
permanentemente ventilati secondo norma
UNI7129.
068411_E0
G20 20 mbar
G30 28-30 mbar
G31 37 mbar
1
European Directive
92/42/EEC:
Gas type:
Category:
IT
Caldaia a condensazione - Chaudierè a condensation - Brennwertkessel - Condenserende verwamingsketel
G20 G25
Qn(max)=
Cod.
N°
Pn(max)=
Qn(min)=
Pn(min)=
-
P.min.G20= 20 mbar
IP
G20 - 20 mbar
NOx:
bar
T= °C
kW
kW
kW
kW
kW
kW
kW
kW
T067692GE
-
-
-
17
CALDAIA REGOLATA PER: CHAUDIERE REGLEE POUR: KESSEL GEREGELT FUR: VERWARMINGSKETEL INGESTELD OP: KEDEL REGULERET TIL: CENTRALA REGLATA PENTRU: A KAZAN AZ ALABBI ADAKTORA LETT BEALLITVA:
PAESE DI DESTINAZIONE: PAYS DE DESTINATION: LAND VON BESTEMMING: BESTIMMUNGSLAND: LAND,HVOR KEDLEN SKAN INSTALLERES: TARA DE DESTINATIE: RENDELTETESI ORSZAG:
PMS=
Beretta Caldaie
Via Risorgimento, 13
23900 Lecco (LC)
Central heating section
Qn Rated heat input
Pn Rated useful heat output
IP Electric degree of protection
PMS Maximum operating pressure, CH circuit
T Temperature
η Efciency
NOx NOx class
b
If these plates or any other means of clearly identifying the product are defaced, removed or lost, proper installation
and servicing may be rendered difcult.

7
1.6 System layout
POWER MAX 50 P DEP - 50 P
1
3
6
7
17
9
2
5
4
16
13 14 15
1
2
3
4
6
5
7
8
10
9
11 17
18
19
20
12
23
22
24
26
24
21
22
23
25
1 Flue gas analysis outlet
2 Flue gas exhaust connection
3 Gas valve
4 Fan
5 Flue gases pressure switch
6 Combustion chamber
7 Electrical panel
8 Minimum Pressure Switch set at 0,7 bar
9 Exhaust ue probe
10 Condensate drain siphon
11 Drain cock
12 Main switch
13 Central heating return
14 Gas supply
15 Central heating ow
16 Condensate drain connection
17 Flow-meter
18 Pump
19 Return probe
20 Control panel
21 Safety Thermostat with manual reset by PCB
22 Flow probe
23 Automatic bleed valve
24 Ignition/detection electrode
25 Casing
26 Smoke-exhaust ue non-return valve

8
POWER MAX 65 P - 80 P
1
2
3
4
5
1
4
5
6
10
16
6
7
8
9
10
22
20
21
23
24
17
2
21
22
23
3
16
15
1211 13 14
17
19
18
1 Flue gas analysis outlet
2 Flue gas exhaust connection
3 Gas valve
4 Fan
5 Combustion chamber
6 Electrical panel
7 Smoke-exhaust ue non-return valve
8 Drain cock
9 Minimum Pressure Switch set at 0,7 bar
10 Pump
11 Main switch
12 Central heating return
13 Gas supply
14 Central heating ow
15 Condensate drain connection
16 Flow-meter
17 Exhaust ue probe
18 Return probe
19 Control panel
20 Ignition/detection electrode
21 Safety Thermostat with manual reset by PCB
22 Flow probe
23 Automatic bleed valve
24 Casing

9
POWER MAX 100 - 110 - 130 - 150
1
3
4
5
14
16
2
21
22
13
109 11 12
1
2
3
4
5
6
7
8
19
23
14
21
20
22
16
15
18
17
1 Flue gas analysis outlet
2 Flue gas exhaust connection
3 Fan
4 Combustion chamber
5 Electrical panel
6 Smoke-exhaust ue non-return valve
7 Drain cock
8 Minimum Pressure Switch set at 0,7 bar
9 Main switch
10 Central heating return
11 Gas supply
12 Central heating ow
13 Condensate drain connection
14 Flow-meter
15 Gas valve
16 Exhaust ue probe
17 Return probe
18 Control panel
19 Ignition/detection electrode
20 Safety Thermostat with manual reset by PCB
21 Flow probe
22 Automatic bleed valve
23 Casing

10
1.7 Technical specications
Description
POWER MAX
U.M.
50 P
DEP 50 P 65 P 80 P 100 110 130 150
Appliance type Condensing boiler heating system
B23, B53; B53P
Fuel G20-G25-G30-G31
Device category II2H3P
Combustion chamber vertical
Maximum rated heat input at furnace referred to HVC
(LCV)
38,7
(34,9)
50
(45)
63
(57)
76
(68)
100
(90)
108
(97)
124
(112)
146
(131) kW
Minimum rated heat input at furnace referred to HVC
(LCV)
10
(9)
10
(9)
15
(14)
15
(14)
21,6
(19,4)
21,6
(19,4)
24,9
(22,4)
29,2
(26,2)
kW
Useful (rated) heat output 34,4 44,2 56 68 88 95 110 129 kW
Maximum rated heat output (80-60°C) P4 G20 34,4 44,2 55,7 67,0 88,3 95,3
109,8 129,0 kW
Maximum rated heat output (50-30°C) - G20 38,0 48,8 61,9 73,9 97,4
105,1 121,1 142,1 kW
Maximum nominal heat output (60-
40°C) - G20 36,6 47,0 59,6 71,4 93,8
101,1 116,2 137,3 kW
30% heat output with return at 30°C P1 G20 11,5 14,7 18,7 22,3 29,4 31,7 36,6 43,0 kW
Minimum rated heat output (80-60°C) - G20 8,9 8,9 13,5 13,5 19,2 19,2 22,1 26 kW
Efciency class in central heating mode A A A A - - - -
Seasonal energy efciency in central
heating mode ηs 94 94 94 94 94 94 94 94 %
Efciency at rated heat input and High
temperature GCV (NCV) regime η4 useful Pn (60-80°C)
88,5
(98,4)
88,4
(98,3)
88,4
(98,3)
88,2
(97,9)
88,3
(98,0)
88,2
(97,9)
88,6
(98,3)
88,2
(97,9)
%
Efciency at 30% of the nominal ther-
mal ow and on low PCS temperature
regime
η1
useful
30% of
Pn
98,4
(109,5)
98,2
(109,2)
98,2
(109,2)
98
(108,8)
98,1
(108,9)
98
(108,8)
98
(108,8)
98,1
(108,9)
%
Chimney losses with burner on at max. Pn (80-60°C) 2,3 2,3 2,3 2,3 2,5 2,6 2,5 2,6 %
Chimney losses with burner on at max. 30% Pn (50-
30°C) 0,5 0,5 0,5 0,5 0,6 0,6 0,5 0,6 %
Heat loss in standby mode Pstby 45 57 72 87 115 124 143 168 W
0,1 %
Annual energy consumption QHE 71 91 117 141 - - - - GJ
Noise level (sound power)
LWA at P max 51 52 53 54 55 56 57 57 dB(A)
Emissions (*)
NOx
(referred
to HCV) 42,0 43,9 34,2 36,4 38,1 38,7 39,3 46,1 mg/ kWh
Emissions at max./min. heat input,
G20
CO29 - 9 %
CO
63/2,3 73/2,3 79/6,5 90/6,5 81/7,5 91,5/7,5 89/4,6 91,5/5,6 ppm
Maximum rated heat input (LCV) G25 35 50 53 65 85 93 107 127 kW
Minimum rated heat input (LCV) G25 9 9 13 13 18,1 18,5 21,4 24,5 kW
Emissions at max./min. heat input,
G25
CO29 - 9 %
CO
72/3,2 80/3,2 92/7 93,5/7 84/8 94/8 92/6 95/7 ppm
Emissions at max./min. power G30 CO210,4-9,9 10,4-10,4 %
CO
132/6 137/6 138/10 142/10 148/11 159/11 172/13 180/15 ppm
Emissions at max./min. power G31 CO210,4-9,9 10,4-10,4 %
CO
136/8 141/8 142/11 147/11 153/12 163/12 177/14 185/16 ppm
Flue gas temperature at max. power and min. power
80-60°C
66,5/61 67,5/61 71/61 72/61 76/62 78/62 75/61 77/61 °C
Flue gas temperature at max. power and min. power
50-30°C
44/32 45/32 45/33 46/33 47/35 49/35 45/33 48/35 °C
Flue gas mass ow rate (**)
0,015 0,02 0,025 0,03 0,04 0,046 0,05 0,06 Kg/s
(*) Weights calculated according to EN 15502.
(**) Values referred to atmospheric pressure at sea level.

11
Description
POWER MAX
U.M.
50 P
DEP 50 P 65 P 80 P 100 110 130 150
Water-side resistance (∆T 20°C) - - - - 160 210 350 510 mbar
Available useful discharge head (∆T 20°C) 420 250 490 390 - - - - mbar
Maximum working pressure 6 bar
Minimum supply pressure 0,7 bar
Maximum permitted temperature 100 °C
Lockout thermostat activation temperature 95 °C
Adjustment temperature (min / max) 30 / 80 (***) °C
Thermal module water content 5 5 15 15 17 17 23 25 l
Maximum condensation at 100% rated heat output
(50-30°C) 5,4 7,0 8,9 10,1 13,6 15,0 17,5 19,8 l/h
Power supply 230-50 V-Hz
Index of protection IPX4D IP
Consumption at full load Elmax 75 105 63 77 150 203 205 302 W
Consumption at part load Elmin 31 34 30 30 36 31 44 45 W
Electrical consumption in standby
mode Psb 9 9 13 13 6 6 6 8 W
(***) Up to 85°C if combined with the plate heat exchanger accessory.
1.8 Pumps
The thermal modulesPOWER MAX 50 P DEP, POWER MAX
50 P, POWER MAX 65 P and POWER MAX 80 P are tted
with a circulator.
Residual head (mbar)
0
100
200
300
400
500
600
700
800
900
0 1,5 2 2,5 3 3,510,5 4
POWER MAX 65 P
POWER MAX 80 P
POWER MAX 50 P DEP
POWER MAX 50 P
Flow-rate (m3/h)
b
At the rst start-up, and at least once a year, the rota-
tion of the circulator shaft should be checked as, es-
pecially after long periods of not being operated, de-
posits and/or residuals could impede its free rotation.
b
Before loosening or removing the circulator cap, pro-
tect the electric devices located underneath from any
water that exits.
a
It is prohibited to operate the circulators without wa-
ter.
Thermal modules POWER MAX 100, POWER MAX 110,
POWER MAX 130 and POWER MAX 150 are not equipped
with a circulator, which must be inside or outside the appli-
ance (see accessories).
For its sizing, consider the thermal module's water-side
pressure drops, which are shown in the chart below.
Water-side pressure drop
Pressure drop (mbar)
0
100
200
300
400
500
600
700
800
900
1000
0 3 4 5 6 7 8 921
POWER MAX 110
POWER MAX 100
POWER MAX 130
POWER MAX 150
Flow-rate (m3/h)

12
1.9 Water circuit
2
9
MIRI
1 6 7 8
3
4
5
1 Heat exchanger
2 Circulator (only for models POWER MAX 50 P
DEP - POWER MAX 80 P)
3 Drain cock
4 Minimum pressure switch
5 NTC return probe
6 NTC delivery probe
7 Safety thermostat temperature sensor
8 Automatic bleed valve
9 Flow-meter
MI Central heating ow
RI Central heating return
Values of NTC probes' resistors with changing temper-
atures.
Temperature
°C
Tolerance test
±10%
Resistor
Ω
Temperature
°C
Tolerance test
±10%
Resistor
Ω
-40 191908 45 4904
-35 146593 50 4151
-30 112877 55 3529
-25 87588 60 3012
-20 68471 65 2582
-15 53910 70 2221
-10 42739 75 1918
-5 34109 80 1663
0 27396 85 1446
5 22140 90 1262
10 17999 95 1105
15 14716 100 970
20 12099 105 855
25 10000 110 755
30 8308 115 669
35 6936 120 594
40 5819 125 529
1.10 Positioning the temperature
sensors
Probes placed on the related sockets of the thermal
module (POWER MAX 50 P DEP - POWER MAX 50 P):
1 Exhaust ue probe
2 Safety thermostat temperature sensor
3 CH ow temperature sensor
4 Return probe
1
4
1
3
2
Front view Side view
Probes placed on the related sockets of the thermal
module (POWER MAX 65 P ÷ POWER MAX 150):
1 Exhaust ue probe
2 Safety thermostat temperature sensor
3 CH ow temperature sensor
4 Return probe
3
22
3
1
1
4
Front view Side view

13
1.11 Control panel
CONTROL PANEL AND SYMBOLS
PROG
RESET
MENU
1
2
4
3
3
1 Rear light display
2 MENU/Reset key: access to the main menu and restore functioning further to a failure lock-out
3 Navigation keys
4 Main switch (located on the lower part of the appliance)
SECONDARY INFORMATION/DISPLAY VISUALISATION
8.8:8.8 8.8:8.8
OUTSIDE
°C
°F
BAR
PSI
1 2 3 4 5 6
89
7
10
1 Icon displayed when heating mode is enabled. Blinking when there is a heat demand
2 Icon displayed when DHW mode is enabled. Blinking when there is an DHW Demand
3 Icon displayed when entering the "Installer" or "Manufacturer" menu
4 Icon displayed when the appliance burner is on
5 Icon displayed when a Permanent or Temporary error occurs
6 Icon displayed when the climatic mode is on (Par. 2001= 1 o 2)
7 Celsius/Fahrenheit temperature
8 Large numeric display: current value
9 Small numeric display: system pressure display or parameter number
10 Icon displayed when the outdoor probe is connected

14
2 INSTALLATION
2.1 Unpacking the product
The thermal module POWER MAX is shipped palletised,
packaged and with cardboard protections.
The following material is supplied in a plastic envelope in-
side the package (1):
- Instruction manual
- Warranty information leaet B
- LPG conversion kit
- Wall-mounting bracket with plugs (no.4 plugs s=10
mm suitable for concrete, brick, compact stone and
concrete hollow brick walls)
- Hydraulic test certicate
- Energy Efciency Label (for models <70kW)
2.1.1 Positioning of labels
A
A
CALDAIA MURALE A GAS
WALL HUNG GAS BOILER
CHAUDIERE MURALE A GAZ
GAS - WANDHEIZKESSEL
IT
GB
FR
D
CALDAIA MURALE A GAS
WALL HUNG GAS BOILER
CHAUDIERE MURALE A GAZ
GAS - WANDHEIZKESSEL
IT
GB
FR
D
1
A Packing label
b
The instruction manual is an integral part of the ap-
pliance; therefore, it should be read and stored care-
fully.
b
Keep the documentation envelope in a safe place.
Any replacement documents must be ordered from
Beretta who reserve the right to charge for the cost of
the replacement.
2.2 Overall dimensions and weights
P
H
L
Descrip-
tion
POWER MAX
50 P
DEP 50 P 65 P 80 P
L 600 600 600 600 mm
P 435 435 435 435 mm
H 1000 1000 1000 1000 mm
Net weight 65 65 70 64 kg
Descrip-
tion
POWER MAX
100 110 130 150
L 600 600 600 600 mm
P 435 435 435 435 mm
H 1000 1000 1165 1165 mm
Net weight 78 78 90 95 kg

15
2.3 Installation premises
The thermal module POWER MAX can be installed in rooms
that are permanently ventilated and equipped with suitably
sized ventilation openings in line with Technical Standards
and Regulations applicable to the installation site.
b
When installing the boiler, allow sufcient space
around it to access all safety and control devices and
to permit easy maintenance.
b
Check that the electric protection level of the appli-
ance is suitable for features of the room where it is
installed.
b
Make sure that comburent air is not contaminated by
substances containing chlorine or uorine (elements
found in sprays, paints, detergents etc.).
a
Do not obstruct or restrict the air vents in the room
where the boiler is installed. A free air supply is es-
sential for correct combustion.
a
It is forbidden to leave ammable containers and
substances in the room where the thermal module is
installed.
2.3.1 Recommended minimum distances
Clearances for the assembly and the maintenance of the
appliance are shown in the gure.
≥ 1 m
≥ 0,85 m
≥ 0,4 m
≥ 0,5 m
≥ 0,5 m
The minimum surface of ventilation openings is 3,000 cm2
for gas fuel heating systems.
2.4 Installation in older systems and
systems requiring modernisation
When installing these boilers in older systems or systems
requiring modernisation, always perform the following
checks:
- Make sure that the ue is able to withstand the tem-
perature of the combustion gases and that it has been
designed and made in compliance with applicable
standards. The ue must also be as straight as pos-
sible, sealed, insulated and not blocked or choked.
See Paragraph "Discharge of combustion products"
for any additional information.
- Make sure that the electrical supply system has been
installed by a qualied electrician in compliance with
applicable standards
- Make sure that the fuel feed line and any storage tank
are made and installed in compliance with applicable
standards
- Make sure that expansion vessels are big enough to
contain the additional volume generated by thermal
expansion
- Make sure that the ow rate, head and direction of
ow of the pumps are suitable and correct
- The system has been washed, cleaned of mud and
grime and water seals have been checked
- A treatment system is tted when the supply/rell
water has values other than those indicated in Para-
graph "Water quality requirements"
b
The manufacturer declines all responsibility for dam-
age caused by incorrectly constructed ue systems.

16
2.5 Moving and removing the
packing
b
Do not remove the cardboard packaging until your
reach the installation location.
b
Before handling the appliance and removing the
packaging, wear PPE and use tools suitable for the
appliance's size and weight.
b
This step must be carried out by several individuals
equipped with suitable means with respect to the ap-
pliance's size. Make sure that the load is not unbal-
anced during handling.
Proceed as follows to remove the packing:
- Remove the strapping that secures the cardboard
packaging to the pallet
- Remove the cardboard
- Remove edge protectors (1)
- Remove the Styrofoam protection (2)
- Remove the protective bag (3)
3
1
2
1
1
2.6 Thermal module assembly
Thermal modules POWER MAX are supplied complete with
a wall-mounting bracket.
b
Check that the wall on which the appliance is to be
tted is sufciently solid and supports safe screw x-
ing points.
b
The appliance's height must be selected so as to fa-
cilitate dismantling it and maintaining it.
H
Model Height (H) mm
POWER MAX 50 P DEP 1850<H<2000
POWER MAX 50 P 1850<H<2000
POWER MAX 65 P 1850<H<2000
POWER MAX 80 P 1850<H<2000
POWER MAX 100 1850<H<2000
POWER MAX 110 1850<H<2000
POWER MAX 130 2000<H<2150
POWER MAX 150 2000<H<2150
For installation:
- Position the bracket (1) onto the wall (2), at the point
where you wish to install the appliance
- Ensure that the bracket is horizontal and mark the
points where the holes for xing plugs must be drilled
- Drill the holes and insert expansion plugs (3)
- Fix the bracket to the wall using the screws (4)
- Secure the appliance onto the bracket
1
2
3
4

17
After installing the thermal module:
- remove the locking screw
- pull the front panel outwards and then to the top to
decouple it from points A.
A
A
Locate the envelope containing the product documentation
and stick the Energy Efciency Label (if any) contained in
the envelope onto the panel.
25 kW
30 mm
25 mm
Close the panelling in reverse order to the one described
above.
b
Before proceeding with the hydraulic connections the
protection plugs must be removed from the delivery,
return and condensate drain piping.

18
2.7 Water connections
The dimensions and position of thermal module's hydraulic connections are shown in the table below.
Front view Bottom view
RI MI
B
A
F
H
C
D
E
RI G MI
SC
DESCRIPTION
POWER MAX
50 P
DEP 50 P 65 P 80 P 100 110 130 150
A 387 387 387 387 387 387 387 387 mm
B 143,5 143,5 143,5 143,5 143,5 143,5 143,5 143,5 mm
C 63,5 63,5 63,5 63,5 63,5 63,5 63,5 63,5 mm
D 283,5 283,5 283,5 283,5 283,5 283,5 283,5 283,5 mm
E 98,5 98,5 98,5 98,5 98,5 98,5 98,5 98,5 mm
F 92,5 92,5 92,5 92,5 92,5 92,5 92,5 92,5 mm
H (optional 3-way valve
attachment) 202,5 202,5 - - - - - - mm
MI (system ow) G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
MØ
RI (system return) G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
M
G 1" 1/2
MØ
SC (condensate drain) 25 25 25 25 25 25 25 25 Ø mm
G (gas inlet) G 1" M G 1" M G 1" M G 1" M G 1" M G 1" M G 1" M G 1" M Ø
b
Before connecting the thermal module the protection
plugs must be removed from the delivery, return and
condensate drain pipes.
b
Before connecting the thermal module, it is neces-
sary to clean the system. This step is absolutely re-
quired when the appliance replaces another one on
pre-existing systems.
In order to carry out this cleaning activity, if the old genera-
tor is still installed on the system, it is advisable to:
- add a de-scaling additive.
- Operate the system with the generator on for around
7 days.
- Discharge dirty system water and ush the system
one or more times with clean water.
If the system is very dirty, repeat the last procedure one
more time.
If the old generator is not present or available, use a pump
to circulate the water + additive through the system for
about 10 days and perform a nal washing as described in
the previous paragraph.
Once the cleaning has been completed, it is recommend-
ed to add a suitable protective uid to the system's water
before installing the thermal module.
In order to clean the heat exchanger's built-in water sys-
tem, please contact Technical Assistance Centre B.
a
Do not use incompatible liquid detergents, including
acids (for instance, chloridric acid and similar) in any
concentration.
a
Do not subject the heat exchanger to cyclical pres-
sure changes because fatigue stress is very danger-
ous for the integrity of system components.

19
2.8 Typical water system schematics
Layout 1: circuit with thermal module directly linked to heating system (check that the pump's discharge head
is sufcient to ensure adequate circulation)
10 9
EAF
MI
21
RI
1
11
14
4
5
6
7
8
SE
Layout 2: circuit with thermal module directly linked to heating system and DHW tank. (check that the pump's
discharge head is sufcient to ensure adequate circulation)
5
UAC
1910 1
EAF
6
13
12
1
1
2
34
11
10 9
EAF
MI
21
RI
1
11
5
6
7
8
SE
6
14
4
1 Isolating valve
2 Non-return valve
3 DHW circulation pump
4 Expansion tank
5 Safety valve
6 Drain
7 Pressure gauge
8 Pressure switch
9 Water softener lter
10 Pressure reducer
11 Storage cylinder
12 Automatic bleed valve
13 Diverter valve
14 Pump (tted as standard for mod-
els POWER MAX 50 P DEP and
POWER MAX 80 P)
15 High-temperature system circu-
lator
16 Storage cylinder circulator
SE Outdoor sensor
MI High temperature
system ow
RI High temperature
system return
EAF Domestic cold wa-
ter inlet
UAC Domestic hot water
outlet
b
Domestic hot water and central heating circuits must be completed with expansion vessels of adequate capacity
and suitable, correctly-sized safety valves. The discharge of safety valves and appliances must be connected to a
suitable collection and disposal system (see Catalogue for compatible accessories).
b
The choice of system components and the method of their installation are left up to the heating engineer installing
the system. Installers must use their expertise to ensure proper installation and functioning in conformity to all ap-
plicable legislation.
b
Special supply/rell water must be conditioned using suitable treatment systems.
a
It is prohibited to operate the thermal module without water.

20
Layout 3: circuit with thermal module connected to a heating system via a separator
10 9
EAF
MI
211
RI
1
11
15
5
6
7
8
SE
14
4
Layout 4: circuit with thermal module linked to DHW tank and heating system via a separator
15
5
UAC
1910 1
EAF
6
12
1
1
2
34
11
10 9
EAF
MI
211
RI
1
11
5
6
7
8
SE
6
16
14
4
1 Isolating valve
2 Non-return valve
3 DHW circulation pump
4 Expansion tank
5 Safety valve
6 Drain
7 Pressure gauge
8 Pressure switch
9 Water softener lter
10 Pressure reducer
11 Storage cylinder
12 Automatic bleed valve
13 Diverter valve
14 Pump (tted as standard for mod-
els POWER MAX 50 P DEP and
POWER MAX 80 P)
15 High-temperature system circu-
lator
16 Storage cylinder circulator
SE Outdoor sensor
MI High temperature
system ow
RI High temperature
system return
EAF Domestic cold wa-
ter inlet
UAC Domestic hot water
outlet
b
Domestic hot water and central heating circuits must be completed with expansion vessels of adequate capacity
and suitable, correctly-sized safety valves. The discharge of safety valves and appliances must be connected to a
suitable collection and disposal system (see Catalogue for compatible accessories).
b
The choice of system components and the method of their installation are left up to the heating engineer installing
the system. Installers must use their expertise to ensure proper installation and functioning in conformity to all ap-
plicable legislation.
b
Special supply/rell water must be conditioned using suitable treatment systems.
a
It is prohibited to operate the thermal module without water.