Beretta Power Plus Box SE User manual

Installation Manual
CONDENSING | THERMAL MODULES
Power Plus Box
Installation Manual
EN

2
RANGE
MODEL CODE
POWER PLUS BOX 100 SE 20072002
ENGLISH
Dear Customer,
Thank you for preferring a Bheating unit, a modern,
high-quality product that is able to guarantee your maxi-
mum well-being for a long period of time, with high levels of
reliability and safety. In particular, if working together with a
Technical Assistance Centre Bthat is specifically pre-
pared and trained to perform periodic maintenance, your
unit will remain at maximum efficiency levels at minimum
operating costs and if required, replacements with original
spare parts can be made.
This instruction manual contains important instructions
and precautions that must be observed to ensure the trou-
ble-free installation and efficient functioning of your Power
Plus Box SE
boiler.
Please accept our renewed thanks for your purchase
Beretta
CONFORMITY
The Power Plus Box SE modular condensing systems com-
ply with:
- Directive 2009/142/EC - Gas Appliances
- Directive 92/42/EEC on efficiency 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
- Delegated Regulation (EU) N. 813/2013
- Standard for gas-fired heating boilers - General re-
quirements and tests - EN 15502-1
- Specific 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.
Furthermore, modular condensing systems Power Plus Box
SE
fulfil the provisions of chapter R.3.B, collection "R" ISP-
ESL. See annex.
b
This product must only be used for the purpose
for which it is designed and made, as specified 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.

This manual, Code 20127830 - Rev. 3 (10/16) comprises 24 pages.
3
CONTENTS
The following symbols are used in this manual:
b
CAUTION! = Identifies actions that require caution
and adequate preparation.
a
STOP! = Identifies actions that you MUST NOT do.
This manual, 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 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 System layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Coupling configuration . . . . . . . . . . . . . . . . . . . . 8
1.8 Technical specifications. . . . . . . . . . . . . . . . . . . . 9
1.9 Water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.10 Location of sensors . . . . . . . . . . . . . . . . . . . . . . 11
1.11 Wiring diagrams. . . . . . . . . . . . . . . . . . . . . . . . . 12
2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 14
2.1 Unpacking the product . . . . . . . . . . . . . . . . . . . 14
2.2 Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Overall dimensions and weights . . . . . . . . . . . . 15
2.4 Installation premises . . . . . . . . . . . . . . . . . . . . . 16
2.5 Water connections . . . . . . . . . . . . . . . . . . . . . . . 17
3 WATER IN CENTRAL HEATING SYSTEMS 18

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 qualified
heating engineer. On completion of the installation,
the installer must issue the owner with a declaration
of conformity confirming 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 specified 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 case of water leaks, disconnect the modular
condensing system from the mains electrical supply,
close the water supply and promptly inform the Tech-
nical Assistance Centre Bor professionally qual-
ified personnel.
b
Periodically check that operating pressure in the wa-
ter circuit is over 1 bar but below the maximum limit
specified for the boiler. If this is not the case, contact
Technical Assistance Centre Bor a professionally
qualified heating engineer.
b
The following operations shall be necessary if the
modular condensing system 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 modular con-
densing system at least once a year.
b
This manual is an integral part of the equipment and
therefore must be stored carefully and must ALWAYS
accompany the modular condensing system even if
it is sold to another Owner or User or transferred to
another plant. If it is damaged or lost, request anoth-
er copy from your local Technical Assistance Centre
B.
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 infirm 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 qualified heat-
ing engineer.
a
Do not touch the boiler while barefoot or wet.
a
Never clean or service the boiler without first discon-
necting it from the mains electricity supply by turning
the main power switch and the control panel switch
OFF.
a
Do not tamper with or adjust the safety or control de-
vices without prior authorisation and instructions from
the manufacturer.
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
It is prohibited to leave inflammable substances and
containers in the room where the modular condens-
ing system 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.

5
1.3 Description of the appliance
The Power Plus Box SE system is a module to be combined
with a Power Plus Box system (SLAVE) for implementing a
heating plant in only two cabinets, with powers of 250 and
300 kW, respectively. The module includes the kit complete
with the I.S.P.E.S.L. components and the hydraulic separa-
tor that also acts as a distribution component on two sepa-
rate circuits (high temperature and low temperature).
The I.S.P.E.S.L control and safety components foreseen by
collection R, for this type of application, are positioned on
the delivery manifold, downstream of the last combustion
unit.
The technical manual for the
Power Plus Box system de-
scribes the safety devices and the relative references to
the provisions of collection R of I.S.P.E.S.L. and the relative
declaration.
Power Plus Box 100 SE
Module consisting of 2 heat generators for heating and
domestic hot water production systems, complete with
I.S.P.E.S.L. components and the hydraulic separator.
Heat input from 14.4 to 76.7 kW .
RESET
On
Error
RESET
On
Error
5.5
bar
1.4 Safety devices
The Power Plus Box SE modular system is equipped with
the following safety devices, installed on every heating el-
ement:
Safety thermostat with automatic reset, which, when tripped
at 90°, shuts off the burner.
Hydraulic circuit diagnostics the minimum flow rate of the
carrier fluid for every heating element is controlled by a
differential water pressure switch and an electronic safety
system that controls a delivery sensor and a return sensor.
The equipment is protected if there is no water or in the
case of insufficient circulation.
Safety valve for the heating system pressure, which trips,
draining the system if circuit pressure exceeds the limit (5.4
bar).
Maximum pressure switch (ISPESL type-approved).
Flue gas evacuation safety the flue gas sensor, located at
the bottom of the exchanger, provokes a fault in the case
of high flue gas temperature (> 80°C). Furthermore, the
"check valve" present in the flue gas exhaust line prevents
the flue gas from passing between heating elements.
Fan safety the fan speed is always monitored by a Hall-ef-
fect speed indicator device.
The Power Plus Box SE modulating systems are prepared
for cascade-coupling and this makes it possible to imple-
ment compact and extremely flexible central heating plants
thanks to the system's modulating ratio.
b
The tripping of the safety devices indicates a poten-
tially hazardous malfunction of the modular system,
therefore contact Technical Assistance Centre imme-
diately.
Therefore it is possible to restart the system after waiting a
brief period (see the first start-up chapter).
a
The modular system must not be operated, even tem-
porarily, if the safety devices are not functioning or
have been tampered with.
b
The safety devices must be replaced by Technical
Assistance Centre, only using original components
from the manufacturer. Refer to the spare parts cata-
logue provided with the modular system.
After making the repair, correct that the modular system is
operating properly.

6
1.5 Identication
The products are identified by:
RESET
On
Error
RESET
On
Error
5.5
bar
Caldaia regolata per:
G20 20 mbar
Paese di destinazione: ITALIA
P
aese 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
1
2
3
1 Gas label .
It is applied on the front part of the device and indicates the type of gas used by the modular system and the coun-
try of destination.
2 Technical data plate
It indicates the technical and performance data.
3 Serial number plate
This is located on the boiler body and specifies the serial number, model, and furnace power.
b
Spare parts and/or technical operation require the exact identication of the corresponding model. The absence of,
tampering with or removing the identication plates or other does not make it possible to reliably identify the product,
makes any installation and maintenance operation difcult and invalidates the warranty.
1.6 System layout
1 Control panel
2 Single heating element
3 Instrument panel
4 Pressure gauge
5 Fuel shut-off cock
6 Automatic vent valve
7 Flue Manifold
8 Venturi tubes
9 Fan
10 Air inlet pipe
11 Ignition detection electrode
12 Flame inspection window
13 Burner
14 Exchanger
15 Gas inlet
16 Flow high temperature connection
17 Flow low temperature connection
18 Delivery probe pit
19 Return low temperature connection
20 Non-return valve
21 3-way cock (manual)
22 Return high temperature connection
23 Water return manifold
24 Condensate drain manifold
25 Water flow manifold
26 Gas manifold
27 Hose (flue gas exhaust)
28 Reduction 80/50 (flue gas exhaust)
29 Check valve (flue gas exhaust)
30 Shut-off cock
31 Thermometer pit
32 Damper device for gauge
33 Gauge fitting with cock
34 Temperature gauge
35 Maximum pressure switch
36 System filling unit or expansion tank fitting
37 Hydraulic separator
38 Drain cock
39 Condensate drainpipe
40 Safety cock (5.4 bar)
41 Single heating element flue gas analysis outlet
42 Flow probe
43 Single heating element automatic bleed cock
44 Safety thermostat
45 Heating element delivery pipe
46 Differential water and minimum pressure switch
47 Pump
48 Water return cock
49 Water return union
50 Return probe
51 Exhaust flue probe
52 Hose coupling union (flue gas exhaust)
53 Gas supply pipe
54 Gas cock
55 Gas valve

7
RESET
On
Error
RESET
On
Error
5.5
bar
1 32 4 5 6 7
30
8
9
10
31
11
14
15
16
17
19
20
21
10
13
22
43
45
41
46
10
13
47
48
23
24
25
26
27
28
29
18
13
12
32
33
36
37
38
34
35
3940
42
44
50
51
52
53
54
55
49
8

8
1.7 Coupling conguration
POWER PLUS BOX POWER PLUS BOX SE
SZ2
VM SB
PZ1 PB
SE
PZ2
SZ1
SZ1 Delivery manifold sensor
SZ2 Low system temperature sensor
SB Boiler sensor
SE Outdoor sensor
PZ1 Zone 1 circulator (high temperature)
PZ2 Zone 2 circulator (low temperature)
PB Boiler circulator
VM Mixer valve

9
1.8 Technical specications
MODEL Power Plus Box 100 SE
Fuel G20 - G30 - G31
Device category II2H3+
Device type B23, B53
Furnace heat output ref. PCS (min - max) 16 - 100 kW
Furnace heat output ref. PCI (min - max) 14,4 - 89,9 kW
Useful heat output (80°/60°C) 88,3 kW
Useful heat output (50°/30°C) 96,8 kW
Useful heat output (60°/40°C) 95,4 kW
Useful efficiency ref. PCI (80°C/60°C) 98,2 kW
Useful efficiency ref. PCI (50°C/30°C) 107,7 %
Useful efficiency ref. PCI Tm=50°C (60°C/40°C) 106,1 %
Useful efficiency at 30% ref. PCI (80°C/60°C) 98,7 %
Useful efficiency at 30% ref. PCI (50°C/30°C) 108,7 %
Useful efficiency at 30% ref. PCI Tm=50°C (60°C/40°C) 106,6
Combustion efficiency 98,7 %
Chimney loss with burner operating 1,3 %
Chimney loss with burner off 0,1 %
Casing loss (Tm=70°C) 0,5 %
Flue gas temperature Return temperature + 2.5°C (max 80°C) °C
CO2 at minimum 9,0 (G20) - 10,4 (G30-31) %
CO2 at maximum 9,0 (G20) - 10,4 (G30-31) %
CO S.A. at minimum - maximum less than 11 - 91 mg/kWh
Weighted NOx 26 mg/kWh
NOx Class 5
Heating operating pressure (max / min) 6 / 0.5 bar
Maximum permitted temperature 90 °C
Boiler water temperature selection range (± 3°C) 20 - 80 °C
Water capacity 10 l
Power supply 230~50 V~Hz
Maximum electric power consumption 330 W
Electric degree of protection X4D IP
Quantity of condensate at maximum power 14,4 kg/h
CONNECTIONS
Water flow manifold (modular system side) 5" DN 125 - PN 6 Ø - DN
Water return manifold (modular system side) 5" DN 125 - PN 6 Ø - DN
Gas manifold (modular system side) 3" DN 80 - PN 6 Ø - DN
Water flow manifolds (system side) 3" Ø
Water return manifolds (system side) 3" Ø
Gas manifold (system side) 2" Ø
Flue gas outlet 160 Ø mm
Condensate outlet 50 Ø mm
DIMENSIONS
Height 1526 mm
Width 1250 mm
Depth 650 mm

10
1.9 Water circuit
28
30
29
31
27
G
G
SC
SF
AA AA
2
19
18
17
15
20
21
22
23
16
10
10
12 12
1
2
3
4
5
7
9
13
11
1
2
3
4
5
7
8
9
10
13
24
25
26
11
6 6
8
10
14
1 Fan
2 Automatic bleed valve
3 Burner
4 Heat exchanger
5 Differential water and minimum pressure switch
6 Non-return valve
7 Pump
8 3-way cock
9 Delivery shut-off cock
10 Drain
11 Flue gas exhaust union with check valve and flue gas
analysis outlet
12 Gas valve
13 Gas cock
14 Safety cock (5.4 bar)
15 Water flow manifold
16 Water return manifold
17 Hydraulic separator
18 Drain cock
19 Shut-off cock
20 High temperature flow fitting
21 Low temperature flow fitting
22 Low temperature return fitting
23 High temperature return fitting
24 Fuel shut-off cock
25 Maximum pressure switch
26 Fuel shut-off cock probe
27 Heating delivery probe
28 Heating element delivery probe
29 Safety thermostat (triggering at 90°C)
30 Flue gas probe (triggering at 80°C)
31 Heating return probe
AA Air inlet
SF Exhaust flue duct
SC Condensate outlet
G Gas supply

11
1.10 Location of sensors
1 Safety thermostat (triggering at
90°C)
2 Heating element delivery probe
3 Flue gas probe (triggering at
80°C)
4 Heating return probe
SZ1 Delivery manifold sensor
SZ2 Low system temperature
sensor
SB Boiler sensor
SE Outdoor sensor
PZ1 Zone 1 circulator (high tem-
perature)
PZ2 Zone 2 circulator (low tem-
perature)
PB Boiler circulator
VM Mixer valve
50°C
30°C
80°C
60°C
SZ2
VM SB
PZ1 PB
SE
PZ2
SZ1
1
3
2
4
POWER PLUS BOX POWER PLUS BOX SE
b
Install sensors SZ2 and SB in a trap (outside the modular system).
Correspondence table for all sensors
Measured temperatures (°C) - Resistive values of the sensors (Ω).
T (°C) R (°Ω)T (°C) R (°Ω)T (°C) R (°Ω)T (°C) R (°Ω)T (°C) R (°Ω)T (°C) R (°Ω)T (°C) R (°Ω)
- 20 67739 - 1 28481 18 13062 37 6470 56 3426 75 1925 94 1137
- 19 64571 0 27279 19 12565 38 6247 57 3319 76 1870 95 1108
- 18 61568 1 26135 20 12090 39 6033 58 3216 77 1817 96 1079
- 17 58719 2 25044 21 11634 40 5828 59 3116 78 1766 97 1051
- 16 56016 3 24004 22 11199 41 5630 60 3021 79 1717 98 1024
- 15 53452 4 23014 23 10781 42 5440 61 2928 80 1669 99 998
- 14 51018 5 22069 24 10382 43 5258 62 2839 81 1622 100 973
- 13 48707 6 21168 25 9999 44 5082 63 2753 82 1577 101 948
- 12 46513 7 20309 26 9633 45 4913 64 2669 83 1534 102 925
- 11 44429 8 19489 27 9281 46 4751 65 2589 84 1491 103 901
- 10 42449 9 18706 28 8945 47 4595 66 2512 85 1451 104 879
- 9 40568 10 17959 29 8622 48 4444 67 2437 86 1411 105 857
- 8 38780 11 17245 30 8313 49 4300 68 2365 87 1373 106 836
- 7 37079 12 16563 31 8016 50 4161 69 2296 88 1336 107 815
- 6 35463 13 15912 32 7731 51 4026 70 2229 89 1300 108 796
- 5 33925 14 15289 33 7458 52 3897 71 2164 90 1266 109 776
- 4 32461 15 14694 34 7196 53 3773 72 2101 91 1232 110 757
- 3 31069 16 14126 35 6944 54 3653 73 2040 92 1199
- 2 29743 17 13582 36 6702 55 3538 74 1982 93 1168

12
1.11 Wiring diagrams
gv
Te rra
Neutro
Fase
a
a
a
m
m
m
gv
2
1
1
2
230V~50Hz
A
B
IG
CS
15
Bus
16
Com.
87
2
1
2
3
1
J9
23
22
21
Valv.Mix
OFF
0
20
Alarm
ON
118
19
J8
9
17
24V
7
6
8
1314
Input
Analogic
NTC
Circ. 2
10 9
7
6
8
12
Circ.2
11
56 J12 4321
6
2
3
4
5
J10
28
27
Pump
25
24
26
Pump 3
Pump
1
2
5
4
3
J11
NTC
1
2
NTC
NTC
4
5
3
Off - Valv. Mix
a
m
gv
gv
gv
gv
Neutro 230V a.c.
Fase 230V a.c.
Te rra
Te rra
Terra
Terra
Fase Pompa circ.1
Neutro Pompa circ.1
Fase Pompa Sanit.
Neutro Pompa Sanit.
Neutro Valv. Mix
Fase Pompa 3
Neutro Pompa 3
J4
J2
J8
J10
R4
2
3J3
J6
J5
J7
F1
Fuse
3.15 A
1
R6 R5
MC
R3 R2
On - Valv. Mix
Alarm
Comune
J12
2
BUS J14
1
R1
4
3
T1
Ebus contr. remoto
24V contr. remoto
Comune
Analogic Input
Comune
T. A. circ. 1
Comune
T. A. circ. 2
2
Comune
4
J1
PC
BARCODE
NTC climatica
J11 11 Comune
NTC mand. circ. 2 NTC mand. circ. 1
Comune Comune
NTC bollitore
Comune
MASTER
PB
PZ1
PZ2
VM
SZ1
SB
SE
SZ2
TA1TA2
J11 4 J11 12 J11 5 J11 13 J11 6 J11 14 J11 7
J11 7
J11 14
J11 6
J11 13
J11 5
J11 12
J11
4
J11 11
IACR
J11 3
J11 10
J12 2 J12 3 J12 4
J12 4 J12 3 J12 2
J11
8
J11
1
J11
9
J11
2
J11
10
J11
3
J10 6 J10
5
J10
4
J10
3
J10
2
J10
1
J8
5
J8
4
J8
3
J8
2
J8
1
J10 6
J10 5
J10 4
J10 3
J10 2
J10 1
J9 3
J9 2
J9 1
J8 2
J8 1
1
3
7
14
1
8
J11
Ground star pole Ground star pole
Bus line with female connector for
possible connection to another
slave card for an adjacent
modular system.
Connection by the installer
b
The circulators must be connected with the interposition of suitable contactors with manual emergency actuation.

13
A
B
BUS 1 BUS 2
gv
J15
4321
J2
5
m
m
a
a
5
6
J14
J6 gv
gv
J8
3
Fusibile 4A
F1
Terra
Fase
Neutro
Terra
Terra
1
T1
1
J7
al polo stella di terra
g
n
v
bm
2
4
313
45
66
7
J1 a
m
m
a
8
7
J12
n
14
3
25
b
m
v
g
m
6
5
4
m
a
11
12
21
J11
NTC mandata
NTC di ritorno
Alimentaz. Sens. Hall
Soffiante (-)
Input Sens. Hall
Soffiante (+)
Comune Sens. Hall
Te rmostato limite
Valvola gas
213
a
9
m
J16
NTC fumi
J9 J4 a
10
WD
J5
T3
PC
Main
SLAVE 1
IG2
TS
VG
SM
SR
SF
EA/ER
J10
J17
a
m
13
Pressostato Diff.
PD
gv
J15
4321
J2
5
m
m
a
a
5
6
J14
J6 gv
gv
J8
3
Fusibile 4A
F1
Te rra
Fase
Neutro
Te rra
Te rra
1
T1
1
J7
al polo stella di terra
g
n
v
bm
2
4
313
45
66
7
J1 a
m
m
a
8
7
J12
n
14
3
25
b
m
v
g
m
6
5
4
m
a
11
12
21
J11
NTC mandata
NTC di ritorno
Alimentaz. Sens. Hall
Soffiante (-)
Input Sens. Hall
Soffiante (+)
Comune Sens. Hall
Te rmostato limite
Valvola gas
213
a
9
m
J16
NTC fumi
J9 J4 a
10
WD
J5
T3
PC
Main
IG
SLAVE 2
3
C
TS
VG
SR
SF
EA/ER
J10
J17
a
m
13
Pressostato Diff.
PD
Circolatore
C
Circolatore
Bus line with male
connector for possible
connection to another slave card
for an adjacent modular system.
MODULAR SYSTEM
IG Modular system main switch
CS Contact for external safeties
PB Boiler circulator
PZ1 Zone 1 circulator (high temperature)
PZ2 Zone 2 circulator (low temperature)
VM Mixer valve
CR Remote control (accessory available separately)
IA Analogue input
SB Boiler sensor
SZ1 Zone 1 sensor
SZ2 Zone 2 sensor
SE Outdoor sensor
TA1 Zone 1 room thermostat (high temperature)
TA2 Zone 2 room thermostat (low temperature)
HEATING ELEMENT
C Heating element circulator (or 2-way valve)
SM Flow probe
SR Return probe
SF Exhaust flue probe
TS Safety thermostat
VG Gas valve
PD Water differential pressure switch
EA/ER Ignition/detection electrode
IG1..IG4 FIRST...FOURTH heating element switch
J10/J17 Addressing microswitches

14
2 INSTALLATION
2.1 Unpacking the product
The Power Plus Box SE condensing system is supplied on
a pallet, strapped and protected by cardboard packaging.
Its condition and compliance with what was ordered must
be checked immediately. The specific characteristics of
the product are indicated on the outside: model, power,
product code and serial number. If there is a discrepancy
between what was ordered and what was received, imme-
diately contact the local agent, warehouse or sales service.
2.2 Opening
Remove the straps (1) and the cardboard packaging (2).
1 Strap
2 Cardboard packaging
3 Pallet
4 Modular condensing system
5 Document envelope containing:
- Instruction manual
- Hydraulic test and warranty certificate
- Barcode labels
6 Accessory envelope containing:
- Natural gas to LPG transformation kit (valid for Eu-
rope)
- Door key
The following is also supplied:
positioned on the base inside the modular system:
- 2 - 5” DN 125 - PN 6 flanges complete with gaskets
- 1 - 3” DN 80 - PN 6 flange complete with gaskets
- polypropylene coupling pipes for the flue gas mani-
fold and condensate outlet
positioned inside the control panel:
- low temperature boiler/delivery sensor
- outdoor sensor.
b
The document envelope (5) must be kept in a safe
place. Any copies must be requested from B,
who will send the new documentation within 45 days
and who reserves the right to charge for the copies.
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.
4
6
3
5
2
1

15
2.3 Overall dimensions and weights
261 220 300 450
1523
1483
1370
354 296
171
IGAS
MI1
RI1
MI2
RI2
IGAS
MI1
CF
CGAS
CM
CR
CSC RI1
MI2
RI2
1250 650
142,5
461
810
254,5
1300
105
196,5
296
169
171
CF
CGAS
CM
CR
CSC
DESCRIPTION Power Plus Box 100 SE
System side connections
MI1 High temperature flow manifold 3" Ø
MI2 Low temperature flow manifold 3" Ø
RI1 High temperature return manifold 3" Ø
RI2 Low temperature return manifold 3" Ø
IGAS GAS inlet 2" Ø
Modular system side connections
CM Water flow manifold 5" DN 125 - PN 6 Ø - DN
CR Water return manifold 5" DN 125 - PN 6 Ø - DN
CF Flue gas manifold 160 Ø mm
CSC Condensate drain manifold 50 Ø mm
CGAS GAS manifold 3" DN 80 - PN 6 Ø - DN

16
2.4 Installation premises
The Power Plus Box SE system must be located next to a Power Plus Box system, as shown in the figure, and connected to
it hydraulically by means of the 5” flanged manifolds. Also the gas manifold, flue gas manifold and the condensate outlet
must be connected together. Finally the two modules must be connected together electrically.
To make these connections, refer to the instructions provided in the
Power Plus Box system manual, in the chapter relative
to the series installation of the modules, keeping the following in mind:
- the hydraulic and gas connections must be made on the right side of the control unit (when standing in front of the
two systems)
- prepare the flue gas outlet and condensate outlet on the left side
- the electric cable inlet can be made on either side
- the flanged connections located on the left side of the Power Plus Box system cannot be used and therefore should
be closed with the set of blind flanges.
In any case, provide spaces to the sides of the machine that are sufficient for the dimensions of the external circuit com-
ponents and their assembly.
≥ 1 m ≥ 1 m
≥ 1 m ≥ 1 m
1250 1250
1530
650
POWER PLUS BOX POWER PLUS BOX SE

17
2.5 Water connections
The Power Plus Box SE condensing systems are designed and built to be installed in hot water heating systems and are
always combined with a Power Plus Box system.
They are used only for this purpose and any other erroneous or unreasonable application is prohibited.
4
12
5
13
10
6
7
8
11
14
9
2
1
3
15
18
16
20
21
22
17
16
18
16
17
16
19
16 16
16
18
16
17
16
POWER PLUS BOX POWER PLUS BOX SE
1 Flue gas exhaust manifold connection
2 Drain
3 Power Plus Box modular system
4 Power Plus Box SE modular system
5 Manifold delivery sensor trap
6 Gas shut-off sensor trap
7 Pressure gauge
8 Thermometer connection
9 Temperature gauge
10 Maximum pressure switch
11 Filling/expansion tank fitting
12 Shut-off cock
13 Hydraulic separator
14 Drain cock
15 Gas supply
16 Disconnect valves
17 Non-return valves
18 System pumps
19 3-way cock
20 High temperature system users
21 Low temperature system users
22 Remote controlled water tank

18
3 WATER IN CENTRAL HEATING
SYSTEMS
INTRODUCTION
Water used in central heating systems MUST be suitably
treated to ensure the correct functioning of those systems
and to guarantee an extended working life for boilers and
all other system components. This applies not only to exist-
ing systems but to newly installed systems too.
Sludge, lime-scale and pollutants present in the water can
cause permanent damage to the heating unit, also within
a short time and regardless of the quality standards of the
materials used.
Contact the Technical Assistance Centre for any further in-
formation on type and use of additives.
b
Always conform to the standards and legislation ap-
plicable in the country of installation.
WATER IN CENTRAL HEATING SYSTEMS.
INSTRUCTIONS FOR THE DESIGN, INSTALLATION AND
MANAGEMENT OF CENTRAL HEATING SYSTEMS.
1. Chemical and physical characteristics of water
The chemical and physical characteristics of water used in
central heating systems must conform to the requirements
of EN 14868 standard and to the following tables:
STEEL BOILERS
with furnace power < 150 kW
Initial filling
water
Regular ser-
vice water
(*)
ph 6-8 7,5-9,5
Hardness °fH < 10° < 10°
Electrical
conductivity μs/cm < 150
Chlorides mg/l < 20
Sulphides mg/l < 20
Nitrides mg/l < 20
Iron mg/l < 0,5
STEEL BOILERS
with furnace power > 150 kW
Initial filling
water
Regular ser-
vice water
(*)
ph 6-8 7,5-9,5
Hardness °fH < 5° < 5°
Electrical
conductivity μs/cm < 100
Chlorides mg/l < 10
Sulphides mg/l < 10
Nitrides mg/l < 10
Iron mg/l < 0,5
(*) values for water in system after 8 weeks of functioning
General note on water used to top up systems:
- If softened water is used to top up a system, 8 weeks
of functioning after topping up, verify that the water in
the system respects the above limits, in particular for
electrical conductivity
- This check is not necessary if demineralised water is
used to top up the system.
2. Central heating systems
b
Do not use automatic filling devices to add water to
central heating systems. Use a manual device in-
stead and record top-ups in the system service book.
b
If there are more than one boiler, they must all be put
into service either contemporarily or with a very low
rotation time during the initial period of service, so as
to evenly distribute the limited quantity of initial lime-
scale.
b
A flushing cycle must be programmed after the plant
has been installed to flush out any installation debris.
b
Water used to fill a system for the first time and water
used to top it up must always be filtered (using syn-
thetic or metal mesh filters with a filtration rating of no
less than 50 microns) to prevent sludge from forming
and triggering deposit corrosion.
b
The heating system must be flushed out and cleaned
with good workmanship before filling up the existing
systems. The boiler may not be filled until after the
heating system has been flushed out.
2.1 New central heating systems
The system must be filled up slowly the first time; once it is
filled and the air expelled it should never need to be topped
up again.
Systems should also be operated at maximum working
temperature the first time they are started up, in order to
facilitate de-aeration. (Gas is not released from the water at
low temperatures).
2.2 Reconditioning old central heating systems
If a boiler has to be replaced, do not refill the entire cen-
tral heating circuit if the quality of water in it conforms to
requirements. If the quality of water fails to conform to re-
quirements, either recondition the old water or separate the
water circuits (water in the boiler circuit must conform to
requirements).
3. Corrosion
3.1 Deposit corrosion
Under-deposit corrosion is an electrochemical process,
due to the presence of sand, rust, etc., inside the mass
of water. These solid substances generally deposit on the
bottom of the boiler (sludge), on tube and pipe heads or in
the gaps between pipes and tubes.
Micro-corrosion phenomena may be triggered off owing
to the difference in electrochemical potential coming to be
created between the material in contact with the impurity
and the surrounding one.

19
3.2 Stray current corrosion
Corrosion from stray currents can occur due to the differ-
ing electrical potentials between water in the boiler and the
metallic mass of the boiler or piping. This process leaves
unmistakeable traces i.e. small regular conical holes.
b
All metallic parts should be grounded by an efficient
earth cable for this reason.
4. Eliminating air and gas from central heating systems
If oxygen enters a circuit continuously or even intermittently
(e.g. in under-floor heating systems whose pipes are not
protected by impermeable synthetic sheaths, in circuits
with open expansion vessels, or in circuits that require fre-
quent top-ups) always separate the boiler’s water circuit
from the central heating circuit.
Mistakes to avoid and precautions.
From what we have seen it is therefore important to avoid
two factors possibly leading to the above mentioned pro-
cesses i.e. contact between air and water in the installation
and regular topping up with fresh water.
To eliminate contact between air and water (and to prevent
the latter from becoming oxidized), it is necessary:
- For the expansion system to be a closed vessel type,
correctly scaled and with the correct pre-loading
pressure (to be regularly checked)
- For the installation to always be at a higher pressure
than that of the atmosphere at any point (comprising
the pump suction side) and under all running con-
ditions (all the water sealing and couplings in the
installation are designed to resist pressure towards
outside, but not for depression)
- That the installation will not be made with materials
permeable to gas (e.g. plastic pipes for floor systems
without anti-oxygen barrier).
b
Lastly we would remind you that the warranty does
not cover breakdowns incurred by the boiler due to
deposits and corrosion.

20