Unical SPK 150 User manual

ENGLISH
150 - 230 - 300 - 400 - 500 - 600
INSTALLATION AND MAINTENANCE INSTRUCTIONS
SPK

2
http://www.unicalag.it/catalogo-prodotti/professionale-300/334/commercial-condensazione-inox
Provisions for proper disposal of the product in accordance with Directive 2002/96/EC
At the end of its life cycle the product must not be disposed of as urban waste. It can be taken to a special
recycling centre managed by the local authorities, or to a dealer who offers this service.
Separate disposal of a domestic appliance avoids possible negative consequences for the environment and
human health deriving from inappropriate waste handling and allows the recovery of the materials of which
it is made, in order to obtain signicant energy and resource savings.

3
Technical features and dimensions Technical Features General information
Maintenance instructions
ENGLISH
4 INSPECTION AND MAINTENANCE...................................................................................................................................33
4.1 Inspection and maintenance instructions ...................................................................................................................33
4.1.1 Routine yearly verication operations..............................................................................................................34
4.3 Adaptation to the use of other gas ...........................................................................................................................36
4.4 Programming operating parameters .........................................................................................................................37
4.5 Wiring diagram..........................................................................................................................................................41
4.6 Release and reset error codes..................................................................................................................................43
3 INSTALLATION INSTRUCTIONS .......................................................................................................................................16
3.1 General warnings .........................................................................................................................................................16
3.2 Installation standards ................................................................................................................................................16
3.3 Preventive system verication and adjustment operations .......................................................................................16
3.4 Package and Weight.................................................................................................................................................17
3.4.1 Handling...........................................................................................................................................................17
3.5 Positioning in boiler room..........................................................................................................................................18
3.6 Flue gas exhaust pipe connection.............................................................................................................................19
3.7 Connection ...............................................................................................................................................................20
3.8 Filling the system .....................................................................................................................................................22
3.9 Electrical connections ..............................................................................................................................................23
3.10 Commissioning..........................................................................................................................................................27
3.11 Measurement of combustion efciency during installation ......................................................................................28
3.11.1 Activation of the calibration function ...............................................................................................................28
3.11.2 Probes positioning..........................................................................................................................................29
3.12 Checking burner pressure adjustment ......................................................................................................................29
Attention: this manual contains instructions for the exclusive use of the professionally qualied installer and/or maintenance
technician in compliance with current legislation.
The user is NOT qualied to intervene on the boiler.
The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from failure to comply with
the instructions contained in the manuals supplied with the boiler.
2 TECHNICAL FEATURES AND DIMENSIONS .....................................................................................................................9
2.1 Technical features......................................................................................................................................................9
2.2 View of main components..........................................................................................................................................9
2.3 Dimensions ..............................................................................................................................................................10
2.3.1 Dimensions to insert in the boiler room .........................................................................................................11
2.3.2 View of internal access ..................................................................................................................................12
2.4 Water side pressure drops diagram.........................................................................................................................13
2.4.1 Primary circuit pump determination ...............................................................................................................13
2.5 Operation data .........................................................................................................................................................14
1 GENERAL INFORMATION...................................................................................................................................................4
1.1 General warnings.......................................................................................................................................................4
1.2 Symbols used in the manual......................................................................................................................................5
1.3 Appropriate use of appliance .....................................................................................................................................5
1.4 Information for system manager ................................................................................................................................5
1.5 Safety warnings .........................................................................................................................................................6
1.6 Technical data plate ...................................................................................................................................................7
1.7 Water treatment .........................................................................................................................................................8
1.8 Boiler antifreeze protection ........................................................................................................................................8

4
1GENERAL INFORMATION
Any product repairs must be performed solely by personnel
authorised by Unical, using original spare parts only. Failure to
comply with the above can compromise the safety of the appli-
ance and void the warranty.
To guarantee appliance efciency and its correct operation,
annual maintenance must be performed by qualied personnel.
Should you decide not to use the appliance, parts entailing
potential sources of hazard must be made safe.
Before commissioning an appliance that has not been used,
wash the domestic hot water production system, making the
water ow until it has been fully replaced.
Should the appliance be sold or transferred to a new owner or
if you move and leave the appliance, always make sure that the
instruction manual accompanies it in order to be consulted by
the new owner and/or installer.
Only original accessories must be used for all appliances with
optionals or kits (including electric).
This appliance is intended solely for the use for which it was
expressly designed.
Any other use is to be considered improper and therefore dan-
gerous (*)
(see 1.7 Water Treatment).
1.1 - GENERAL WARNINGS
The instruction booklet is an integral and essential part of the
product and must be kept by the user.
Read the warnings contained in this instruction booklet carefully
as they provide important guidelines regarding installation, use
and maintenance safety.
Keep the booklet with care for further consultation.
Your appliance must be installed and serviced in compliance with
the standards in force according to the manufacturer instructions,
up to standard and by legally qualied and certied personnel.
Systems for the production of domestic hot water MUST be
constructed entirely with compliant materials.
By professionally qualied personnel we mean: personnel with
specic technical skill in the eld of heating system components
for civil use, domestic hot water production and maintenance.
Personnel must have the qualications provided for by current
legislation.
Incorrect installation or improper maintenance can cause dam-
age to persons, animals or objects for which the manufacturer
is not responsible.
Before performing any cleaning or maintenance, disconnect the
appliance from the energy mains by acting on the switch of the
system and/or through the specic cut-off devices.
Do not obstruct the terminals of the intake/exhaust ducts.
In the event of failure and/or malfunctioning of the appliance,
switch it off and do not try to repair it or intervene on it directly.
Contact only personnel qualied in compliance with law.

5
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
to safety
and health
1.3 - APPROPRIATE USE OF APPLIANCE
The heat generator has been built according to the current level of engineering and acknowledged technical
safety rules.
Nonetheless, if improperly used, dangers could arise for the safety and life of the user and other persons
or damage to the equipment or other objects.
The appliance is designed to work in heating systems, with hot water circulation, for the production of
domestic hot water.
Any other use must be considered improper.
For any damage resulting from improper use, UNICAL AG S.p.A. assumes no responsibility.
Use according to the intended purposes also includes strict compliance with the instructions in this manual.
The user must be instructed concerning the use and operation of his heating system, in particular:
• Deliver these instructions to the user, as well as other documents concerning the appliance inserted in the envelope
inside the packaging. The user must keep this documentation safe for future consultation.
• Inform the user about the importance of the air vents and the ue gas exhaust system, highlighting their essential
features and the absolute prohibition of modifying them.
• Inform the user concerning controlling the system's water pressure as well as operations to restore it.
• Inform the user concerning correct temperature control, control units/thermostats and radiators for saving energy.
• Please note that, in compliance with the standards in force, the inspection and maintenance of the appliance must
be carried out in compliance with the regulations and frequency indicated by the manufacturer.
• Should the appliance be sold or transferred to a new owner or if you move and leave the appliance, always make
sure that the instruction manual accompanies it in order to be consulted by the new owner and/or installer.
The manufacturer will not be held liable in the event of damage to persons, animals or objects resulting from
failure to comply with the instructions contained in this manual.
1.4 - INFORMATION FOR THE SYSTEM MANAGER
NOTE!
For further details
refer to the Technical Information:
http://www.unicalag.it/catalogo-
prodotti/professionale-300/334/
commercial-condensazione-inox

6
1.5 - SAFETY WARNINGS
ATTENTION!
The appliance must not be used by children.
The appliance may be used by adults and only after carefully reading the operating instructions manual
for the user.
Children must be supervised so they do not play or tamper with the appliance.
ATTENTION!
-
pliance with the standards and provisions in force. Incorrect installation can cause damage to persons,
animals and objects for which the manufacturer cannot be held responsible.
DANGER!
NEVER attempt performing maintenance or repairs on the boiler on your own initiative.

contract.

to persons, animals and objects for which the manufacturer cannot be held responsible.
Changes to the parts connected to the appliance (once the appliance installation is complete)Do not modify
the following parts:
- the boiler
- the gas, air, water and electricity supply lines
- the ue gas pipe, the safety valve and the exhaust pipe
- the construction parts which affect the operating safety of the appliance
Attention!
To tighten or loosen the screwed ttings, use only appropriate xed spanners.
Incompliant use and/or inappropriate tools can cause damage (e.g. water or gas leakage).
ATTENTION!

Make sure that the gas tank has been deaerated before installing the appliance.
For state-of-the-art tank venting, contact the LPG supplier or person qualied in compliance with the law requirement.
If the tank has not been professionally deaerated, ignition problems could arise.
In that case, contact the supplier of the LPG tank.
Smell of gas
Should a smell of gas be perceived, follow these safety guidelines:
- do not turn electric switches on or off
- do not smoke
- do not use the telephone
- close the gas shut-off valve
- air out the area where the gas leakage has occurred
- inform the gas supplier or a company specialised in installation and maintenance of heating systems.

Do not use or store explosive or easily ammable materials (e.g. petrol, paints, paper) in the room where the ap-
pliance is installed.
ATTENTION!
Do not use the appliance to support any object.
Specically, do not place any liquid containers (Bottles, Glasses, Containers or Detergents) on top of the boiler.

7
General information
ENGLISH
1.6 - TECHNICAL DATA PLATE
CE marking
The CE marking certies that the boilers meet:
- The essential requirements of the gas appliance directive
(directive 2009/142/EEC)
- The essential requirements of the electromagnetic compat-
ibility directive (2004/108/EEC)
- The essential requirements of the efciency directive (92/42/
EEC)
- The essential requirements of the efciency directive (direc-
tive 2006/95/EEC)
The data plate is situated in the low-
er part of the shell (next to the drain
valve) under insulation.
The Duplicate data plate is placed on
the panel board cover.
KEY:
1 = CE monitoring body
2 = Type of boiler
3 = Boiler model
4 = Number of stars (directive 92/42 EEC)
5 = (S.N°) Serial Number
6 = P.I.N.ProductIdenticationNumber
7 = Typesofapproveduegasexhaustcongurations
8 = (NOx)NOxClass
A = Heatingcircuitcharacteristics
9 = (Pn) Effective nominal output
10 = (Pcond) Effective output in condensation
11= (Qn)Maximumheatoutput
12= (AdjustedQn)Adjustedforratedheatoutput
13= (PMS)Max.heatingoperatingpressure
14= (Tmax)Max.heatingtemperature
B = Domestichotwatercircuitcharacteristics
15= (Qnw)Ratedheatoutputindomestichotwaterfunction
(if different to Qn)
16= (D)SpecicD.H.W.owrateaccordingtoEN625-EN
13203-1
19= (PMW)Max.domestichotwateroperatingpressure
20= (Tmax)Max.domestichotwatertemperature
C = Electricalcharacteristics
21= Electricalpowersupply
22 = Consumption
23 = Protection rating
D = Countries of destination
24 = Direct and indirect countries of destination
25 = Gas category
26 = Supply pressure
E = Factory settings
27 = Adjusted for gas type X
28 = Space for national brands
G = ErP
29=Seasonalspaceheatingenergyefciency
30 =EnergyefciencyinDHWproductionmode

8
ATTENTION (*) see general warnings 1.1:
The heating only models are NOT suitable
for the production of water for human con-
sumption according to Ministerial Decree
D.M. 174/2004.
ATTENTION!
ANY DAMAGE TO THE BOILER CAUSED BY
THE FORMATION OF FOULING OR BY COR-
ROSIVE WATER WILL NOT BE COVERED BY
THE WARRANTY.
1.8 - BOILER ANTIFREEZE
PROTECTION
It is activated by default
VALUE MIN MAX
PH 6.5 8
Hardness [°fr] 9 15
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
page of the www.unicalag.it website
This protection can intervene only if the electricity
and gas supplies are connected.
If one of the two is not available and upon reset
11 (SM) a temperature level between 2 and
5°C is detected, the appliance will behave as
described in the table below, pos 2.
The heating system can be protected effectively
from frost by using antifreeze products with
inhibitor for heating systems (specific for
multidmetal)
Do not use car engine antifreeze products as
they could damage the water gaskets.
1.7 - WATER TREATMENT
Feed water treatment prevents problems and
maintains the functionality and efciency of the
generator over time.
The ideal water pH in heating systems must be
within:
To minimise corrosion, it is crucial to use a cor-
rosion inhibitor; in order for it to work properly,
the metal surfaces must be clean.
(see system protection ACCESSORIES sect. in
domestic price list)
P
O
S
ANTIFREEZE FUNCTION
Power supplies SM (*) Status
antifreeze func-
tion
Actions
Electric Gas
1ON ON < 7 °C ON - Burner and Pump ON until T > 15°C
2
ON OFF
< 5 ÷ 5 °C ON
FAULT SIGNAL CODE 16
(with Electrical power supply ON)
(see par. 4.6 - ERROR CODES).
Ignition inhibited.
OFF ON
OFF OFF
(*) Flow sensor

9
Technical features
ENGLISH
2.2 - INTERNAL VIEW WITH THE INDICATION OF THE MAIN COMPONENTS
SPK 150
2TECHNICAL FEATURES AND DIMENSIONS
2.1 - TECHNICAL FEATURES
NOTE!
Further details in the section
‘‘Technical Information’’ on the boiler
page of the www.unicalag.it website
SPK 230 - 300 - 400 - 500 - 600
KEY
No. C.E. S.E. Description
3 VG Gas valve
5 Burner
10 TL Limit Thermostat Probe
11 SM Flow sensor
14 Boiler drain valve
18
FL - FH VM Fan
19
AF-AS PV Flue gas pressure switch
27
E. RIL. Detection electrode
28
E. ACC. Ignition electrode
32 Inlet ue inspection
33 Panel Board
53 PG Gas pressure switch (* SPK 150)
54 Visual inspection glass
55 Door insulation
56 Stainless steel vertical smoke pipes
with internal aluminium
57 Technical water tank
58 SL Level sensor
59 Condensate collection pan
60 Combustion chamber
61 Air/gas mixer
62
T.ACC Igniters
G Gas inlet
MHeating system ow
R Heating system return
Sm Air vent connection
Scond Condensate drain DN 32
C.E. =ERRORCODES,seepar.4.6
S.E.
=WIRINGDIAGRAMKEY,seepar.4.5
(N.U.) Component Not-Used

10
2.3 - DIMENSIONS
FRONT VIEW
TOP VIEWREAR VIEW
SIDE VIEW SIDE VIEW
SPK DIMENSIONS [mm]
Depth Width Height
P P1 P2 L L1 L2 L3 H H1 H2 H3 H4 H5 H6 H7
150 944 788 156 666 120 288 81 1809 65.6 1467 323.5 743 571 1579 1679
230 1092 954 141 846 120 277 43 1917 65.6 1557 356 775 630 1697 1768
300 1181 1036 144 910 100 303 200 1946 65.6 1618 353 790 635 1741 1796
400 1276 1152 124 996 100 326 200 2130 65.6 1712 390 820 698 1794 1974
500 1276 1152 124 996 100 326 200 2130 65.6 1712 390 820 698 1794 1974
600 1398 1256 142 1096 200 388 220 2206 65.6 1753 390 810 763 1863 2052