Unical SERBHA 300 User manual

100 300 500 800 1200
INSTALLATION AND MAINTENANCE INSTRUCTIONS
SERBHA

2
DATA PLATE

3
Installation instructions Technical Features General information
Maintenance instructions
ENGLISH
1 GENERAL INFORMATION.................................................................................................................................................................................. 4
1.1 General warnings.......................................................................................................................................................................................... 4
1.2 Symbols used in the manual......................................................................................................................................................................... 5
1.3 Safety warnings ............................................................................................................................................................................................ 5
4 INSPECTIONS AND MAINTENANCE............................................................................................................................................................... 14
4.1 Maintenance instructions ............................................................................................................................................................................ 14
3 INSTRUCTIONS FOR THE INSTALLER .................................10
3.1 General warnings ............................................................10
3.2 Installation standards.......................................................10
3.3 Supply conditions ............................................................10
3.4 Handling .........................................................................10
3.5 Hydraulic connections .....................................................11
3.6 Electrical connections .....................................................11
3.7 Wiring diagram .......................................................... 12-13
3.16 Commissioning................................................................28
2 TECHNICAL FEATURES AND DIMENSIONS .................................................................................................................................................... 7
2.1 General description of the range and components ...................................................................................................................................... 7
2.2 General features ........................................................................................................................................................................................... 8
2.3 Dimensions ................................................................................................................................................................................................... 8
2.4 Operating data .............................................................................................................................................................................................. 9

4
1GENERAL INFORMATION
This document is the Technical Manual for installation, use
and maintenance.
The appliance is manufactured, tested and certified in
compliance with the Essential Safety Requirements
of Directive 2014/68/UE "P.E.D. – Pressure Equipment
Directive”.
ATTENTION!
The appliance must be operated within the
limits for which they were designed; any
other use must be considered improper and
therefore dangerous.
These design limits are given:
- on the data plate applied on the appliance;
ATTENTION!
This manual is an integral and essential part
of the supply and must be delivered to the
user.
In the event that the appliance is transferred in use or sold to
other Users (change of destination or move) make sure that
the appliance is transferred together with this installation, use
and maintenance manual so that it can be consulted by the
entrusted installer, the maintenance technician and the new
owner.
Installation, operation and maintenance must be carried
out in compliance with the regulations in force, following the
instructions described in this manual; also, any operation
must be carried out by professionally qualified and authorised
personnel.
ATTENTION!
Incorrect installation, inadequate use and
maintenance of the appliance can cause
damage to persons or property, for which
the MANUFACTURER is not liable.
CAREFULLY READ AND FOLLOW THE
INSTRUCTIONS CONTAINED IN THIS
MANUAL BEFORE CARRYING OUT ANY
OPERATION
ATTENTION!
THE APPLIANCE IS NOT DESIGNED TO
BE INSTALLED OUTDOORS, BUT MUST
BE LOCATED WITHIN THE APPROPRIATE PREMISES
(BOILER ROOM).
OUTDOOR OPERATION MAY LEAD TO DAMAGE, THUS
RESULTING IN SERIOUS DANGER CAUSED BY:
• collapse/burst of framework aimed at the pressure
containment for embrittlement of the metal parts of the
framework making up the pressurised body;
• collapse/burst for failed operation/inhibition of the safety and
adjustment accessories;
• damage due to impairment of safety equipment/adjustment
due to the action of rainwater;
• minimum temperature not compatible with the minimum
allowable for the set/components, during the expected life;
• impairment of the IP protection of electrical parts not suitable
for operating the set outdoors under the action of atmospheric
agents.
1.1 - GENERAL WARNINGS

5
General information
ENGLISH
1.3 - SAFETY WARNINGS
Please strictly adhere to the safety warnings to avoid danger
and damage to people and property.
Addressees
The following instructions are intended exclusively for
specialised personnel.
- The interventions to the electrical system must only be
carried out by specialised and qualified personnel, according
to the law.
- Commissioning must be done by professionally qualified
personnel.
Standards
In case of intervention, follow:
- the accident-prevention regulations,
- the environmental protection standards,
- the operating safety standards,
- the provisions of the Insurance Institute against accidents at
work,
- Directive 2014/68/UE.
Interventions on the system
- Disconnect the system supply voltage
(e.g. acting on the individual switch or on the
main switch) and make sure that voltage is
disconnected.
1.2 - SYMBOLS USED IN THE MANUAL
Pay special attention when reading this manual to the parts marked by the symbols:
NOTE!
Tips
for the user
ATTENTION!
Possible dangerous
situation for the product
and the environment
DANGER!
Serious danger for
personal safety and life

6
Hot surfaces
Risk of burns caused by contact with hot
surfaces:
- steam pipe,
- hot water pipe,
Comply with the safety standards at work!
Repairs
Attention
It is not allowed to carry out repair work on
parts with technical safety function. Replace
the faulty parts with original Unical spare
parts only.
Additional components, spare parts and parts
subject to wear
Attention
Spare parts and pieces subject to wear
that were not tested with the system can
jeopardise its operation. The installation
of parts not approved and unauthorised
modifications may compromise safety
and affect the warranty rights. For the
replacement, only use original Unical spare
parts.
Draining boiling water
Attention
Purge and desalination water can reach
temperatures of 100°C and more.
Before being conveyed to the sewage
system, it must be cooled to a temperature
of < 35°C.
Safety Guidelines
If there is a risk of imminent damage,
decommission the appliance immediately.
In case of serious damage to the feed water tanks, immediately
inform the authorised inspection body before carrying out
repairs.
Comply with the technical instructions.
Access to the boiler room is forbidden to unauthorised
personnel.
Keep the boiler room clean, well lit and, above all, free from
foreign objects that obstruct the operation.
During operation, keep the prescribed exits open and free.
Immediately report any visibly phenomena on welding seams,
not-hermetic damaged points or with first signs of rust, unusual
behaviour of the operating equipment and system components,
anomalous noises inside the boiler.
System faults and defects that cannot be eliminated must be
equally reported to the manufacturer.
All boiler components and adjustment devices must be
protected against rain, water and steam leaks. Any damage or
leaks must be immediately repaired.

7
General information
ENGLISH
2.1 - GENERAL DESCRIPTION
OF THE RANGE
2TECHNICAL FEATURES
AND DIMENSIONS
Drain collection cooler tank for Steam generators
Tank for expansion and cooling of
steam generator purges, making evacuation possible at
suitable and allowed temperature.
Made in carbon steel, vertical structure with
cambered bottoms and support legs for fastening to the
ground; painted externally.
There are various flanged connections for connection to
drainage and sewage network; temperature control valve for
cold water intake.
The SERBHA drainage tanks are designed in conformity to
Directive PED 2014/68/UE.
The range includes 5 models
from 100 litres to 1200 litres.
Supply composition:
1 - Cooling tank
2 - Automatic temperature adjustment system
with NTC probe.
3 - Thermometer
4 - Hand hole
5 - Cooling water inlet unit
6 - Drain inlet
7 - BLOW DOWN Inlet
8 - TDS drain inlet
9 - Cooled water outlet connection
10 - Manual drain with ball valve
(tank bottom drain)
11 - Steam outlet with fan system.
NOTE:
The boiler blowdown tank is supplied
completely assembled, including the steam
outlet head. The steam outlet head is supplied
mounted on the tank only for shipping; during
installation, between the tank and the head,
insert a suitable vent pipe.
11
2
4
8
7
3
10
5
9
6
1

8
2.3 - DIMENSIONS
They are recommended for manually or automatically
controlled bottom drain, to house manually controlled purge
valves for continuous purging, automatic control valves and
control systems for TDS, tanks, accessories and equipment for
heat recovery.
The SERBHA cooling tanks are vertical, with 5 models, in
externally painted carbon steel.
2.2 - GENERAL FEATURES
Operation
Operation of the purge tank is simple and no special operational
instructions are necessary.
The tank makes it possible to safely expand the hot water from
high to low pressure, resulting in a production of flash steam
and the water contained in it is mixed with cold water from the
mains in order to lower its temperature before sending it to the
sewage network.
11 11 11
12
1
2
10
10 10
2
5
55
9
9
6
8
8
6
6
9
7
7
33
B
A
H
C
D
4
4

9
Technical Features
ENGLISH
KEY
1 - Cooling tank
2 - Automatic adjustment system for
temperature, with NTC probe.
3 - Thermometer
4 - Hand hole
5 - Cooling water inlet unit
6 - Drain inlet
7 - BLOW DOWN inlet
8 - TDS drain inlet
9 - Cooled water outlet connection
10 - Manual drain with ball valve (tank bottom drain)
11 - Steam outlet with fan system
12 - Vent pipe
2.4 - OPERATING DATA
Model Level water
content
Total Volume Empty
weight
H A B C D
l. l. kg mm mm mm mm mm
SERBHA 100 100 200 140 1105 550 645 670 830
SERBHA 300 300 600 210 1505 750 845 910 1160
SERBHA 500 500 1000 270 1895 850 945 1160 1550
SERBHA 800 800 1600 370 2245 1000 1095 1340 1750
SERBHA 1200 1200 2400 520 2475 1150 1295 1490 1980
Model Cooling
water inlet
Drain
inlet
Blow Down
inlet
TDS
drain inlet
Cooled
water outlet
Bottom
drain
SERBHA 100 1/2” DN 25 DN 50 DN 25 DN 80 1 1/2”
SERBHA 300 1/2” DN 25 DN 50 DN 25 DN 100 1 1/2”
SERBHA 500 1/2” DN 25 DN 50 DN 25 DN 100 1 1/2”
SERBHA 800 1” DN 25 DN 50 DN 25 DN 150 1 1/2”
SERBHA 1200 1” DN 25 DN 50 DN 25 DN 150 1 1/2”

10
3.2 - INSTALLATION STANDARDS
It must be installed by a professionally qualified technician,
who shall take the responsibility of observing all local and/
or national laws published in the official journal, as well as
the applicable technical standards.
3INSTRUCTIONS FOR
INSTALLATION
3.1 - GENERAL WARNINGS
ATTENTION!
The appliance is intended solely for the use
for which it was expressly designed. Any
other use is to be considered improper and
therefore dangerous.
The installation requirements of systems in
a building always depend on the regulations
in force in the country of installation.
ATTENTION!
The appliance must be installed by a qualified
technician with the technical-professional
requirements according to the law in
force which, under his own responsibility,
guarantees compliance with standards
according to good practice rules.
3.3 - SUPPLY CONDITIONS
Upon receipt remove the packaging and make sure
the contents are intact.
3.4 - HANDLING
The appliance is equipped with lifting eyebolts.
Pay attention when handling the boiler and use equipment
suitable for its weight.

11
Installation instructions
ENGLISH
3.6 - ELECTRICAL CONNECTIONS
General warnings
Have the electrical system checked by
personnel professionally qualified according
to law, attesting the adequacy:
- of the electrical system to the power loads
absorbed by the generator,
- of the earthing system,
- of the cables
- of a unipolar switch installed outside the
boiler room, pursuant to current legislation.
The electrical safety of the appliance is
guaranteed only when it has been properly
connected to an efficient earthing system carried
out as intended by safety standards in force:
pipes of the gas, water and heating systems are
absolutely unsuitable as earthing connections.
ATTENTION!
THE MANUFACTURER IS NOT LIABLE FOR
INJURIES TO PERSONS AND DAMAGE
TO GOODS CAUSED BY AN INADEQUATE
EARTHING SYSTEM.
Connection to the electrical power supply
The generators are equipped with a fully-assembled electrical
panel that is connected to the various accessories on the
generator itself.
For connection to the control panel, refer to
the electrical diagram in par 3.7.1
Danger!
Only a qualified technician may perform the
electrical installation.
Before performing connections or any type
of operation on electrical parts, always
disconnect electrical power and make sure
that it cannot be reconnected accidentally.
Remember that a bipolar switch must be installed
on the power line with over 3 mm between
contacts, easy to access, making maintenance
quick and safe.
3.5 - HYDRAULIC CONNECTIONS
The pipes to the device must be supported
and arranged so as not to create dangerous
efforts for the stability of the connections
themselves.
Make sure the hydraulic pipes are not used
as earth connections for the electrical or
telephone system. They are not suitable for
such a use because serious damage could
occur to the hydraulic pipes.

12
Vdd
1
GP5
2
GP4
3
CLR
4GP25
GP16
GP07
Vss 8
IC1
PIC12F675
C5
C10uF
C9
100nF
GNDGND
5Vcc
C8
100nF
R6
1K5
GNDGND
GND
1 2 3 4 5
ST1STRIP5
C10 C10uF
R13 1K5
R12 10K
5Vcc
D9 L4148
D10L4148
GND
C7
100nF
PT1
10K
GND
5Vcc
R8 22K
R10 10K
Q1
BC337
D3
L4148
GNDGND
OUT2
GND
C3
C100uF16V
VR1
d10
C6
100nF
C2
C470uF35V
VR2
d10
7
8 6
4
3 5
B1
FINDER 41.52
1
2
3
4
5
6
M1
M6
N
L
OUT2
OUT1
R4
1K5
R14 1K5
C4
C10uF
R5
1K5
2
1
CN1
LUM-MSF2P
GND
R3
2K37 1%
5Vcc
D1
L4148
D2
L4148
GNDGND
NTC
10K/25°
103AT
NON
MONTARE
L
N
COMANDO ’’Co-nO’’
COMANDO 230 Vac
LINEA
NEUTRO
REG35-65°
C1
1000nF
MKP
560Vdc/250Va c
R75LR
R1 1201W
GND
GNDGNDGND
R7 1K 1/4W 1210
GNDGNDGND
5Vcc
24Vc c
24Vc c
2
1
M2
TERM
TERM
GND
L
N
R2 1201W
DZ1
24VDZ2
4V7
D5
1L4148
D6
1L4148
D7
1L4148
D8
1L4148
3
4
Termostato Ambiente
(PONTICELLATURA)
POMPARAFFR.
POMPARAFFR.
Firma: Firma 2:
Utilizzo:
Particolare:
Disegno:
Schema Elettrico
Termostato Sicurezza Unical
Unical - 42908
CMS
Ditta: Unical Data: 22/02/2013
PCB: Cod. 27845
Dis: di
11
3.7.1 - WIRING DIAGRAM
CIRCUIT BREAKER

13
Installation instructions
ENGLISH
Vdd
1
GP5
2
GP4
3
CLR
4GP25
GP16
GP07
Vss 8
IC1
PIC12F675
C5
C10uF
C9
100nF
GNDGND
5Vcc
C8
100nF
R6
1K5
GNDGND
GND
1 2 3 4 5
ST1STRIP5
C10 C10uF
R13 1K5
R12 10K
5Vcc
D9 L4148
D10L4148
GND
C7
100nF
PT1
10K
GND
5Vcc
R8 22K
R10 10K
Q1
BC337
D3
L4148
GNDGND
OUT2
GND
C3
C100uF16V
VR1
d10
C6
100nF
C2
C470uF35V
VR2
d10
7
8 6
4
3 5
B1
FINDER 41.52
1
2
3
4
5
6
M1
M6
N
L
OUT2
OUT1
R4
1K5
R14 1K5
C4
C10uF
R5
1K5
2
1
CN1
LUM-MSF2P
GND
R3
2K37 1%
5Vcc
D1
L4148
D2
L4148
GNDGND
NTC 10K/25°
103AT
NON
MONTARE
L
N
COMANDO ’’Co-nO’’
COMANDO 230 Vac
LINEA
NEUTRO
REG35-65°
C1
1000nF
MKP
560Vdc/250Va c
R75LR
R1 1201W
GND
GNDGNDGND
R7 1K 1/4W 1210
GNDGNDGND
5Vcc
24Vc c
24Vc c
2
1
M2
TERM
TERM
GND
L
N
R2 1201W
DZ1
24VDZ2
4V7
D5
1L4148
D6
1L414
8
D7
1L4148
D8
1L4148
3
4
Termostato Ambiente
(PONTICELLATURA)
POMPARAFFR.
POMPARAFFR.
Firma: Firma 2:
Utilizzo:
Particolare:
Disegno:
Schema Elettrico
Termostato Sicurezza Unical
Unical - 42908
CMS
Ditta: Unical Data: 22/02/2013
PCB: Cod. 27845
Dis: di
11
Room Thermostat
(CROSS CONNECTION)
DO NOT
MOUNT
LINE
NEUTRAL
’’Co-nO’’ CONTROL
COOLING PUMP
230 Vac CONTROL
COOLING PUMP
CIRCUIT BREAKER

14
4INSPECTION AND
OPERATIONS
4.1 - GENERAL RULES
The yield and duration of the appliance
depends not only on a proper installation but
also on good operation and maintenance.
Routine maintenance is essential in the
interest of the safety and durability of the
appliance.
All maintenance must be carried out by
qualified personnel.
Failure to perform Inspections and
Maintenance can entail material and personal
damage.
All cleaning and maintenance operations
must be preceded by disconnecting the
electricity and then closing the fuel supply.
Therefore, observe the following guidelines:
- Periodically check the efficiency of the control and safety
devices of the appliance.
- It is absolutely forbidden to touch the hot
parts of the generator which are heated
and therefore burn. The same caution
should also be used for at least the next
hour when turning off the burner.
- if maintenance is performed by several people, agree before
starting work "who does what";
- during cleaning wear all PPE provided for specific activities,
in strict accordance with the Safety Standards;
- carefully protect all equipment;
- when necessary to reassemble the components removed
for cleaning, carefully check the state of the gaskets and / or
provide for their replacement;
- protect screws and nuts with graphite grease which will
facilitate their subsequent removal;
Instructions for routine maintenance
Carry out the following checks:
- check the mechanical and electrical efficiency of the
adjustment and safety devices;
- verify the sealing of all gaskets on the water side;
Instructions for extraordinary maintenance
Scale deposits on the water side of the same
walls as well as produce effects similar to those
described above, are the cause of breaks
(cracks on the tube plates, cracks on the pipes
etc.) or dangerous overheating.
Interventions to prevent the above phenomena
consist in:
WATER SIDE:
- internal inspection to ascertain the presence
of deposits or signs of corrosion;
WARNINGS
Should it be necessary due to leaks or
seeping of the safety valve, care must be
taken in the possible shutter and housing
grinding, operations to be requested directly
from the Manufacturer of the valve.

15
Maintenance instructions
ENGLISH

46246 - 3rd ed. 04/18
www.unical.eu
Unical shall not be held liable for any inaccuracies due to transcription or printing errors.
Furthermore, it reserves the right to modify its products as deemed necessary or useful, without aff ecting their essential features.
46033 casteldario - mantova - italia - tel. [phone] - fax [phone]
inf[email protected] - expor[email protected] - www.unical.eu
AG S.p.A.