Italtherm Time Power 50 K manual 

115 K
90 K
70 K
50 K
TIME POWER
Instruction
Handbook for:
use
adjustment
maintenance
installation
ErP 2015 Ready

2
!
READ THE USER WARNINGS CAREFULLY FOR SAFE USE OF THE HEATING UNIT BEFORE USING THE EQUIPMENT.
Symbology
The symbols shown here below are used in the manual to illustrate dangerous situations, or call your attention to special warnings so that you can avoid any risks or accidents,
personal injuries or material damage by the operator.
!Warnings / notes iInformation IDanger / Attention
Index
INSTRUCTIONS FOR THE USER ...................3
Setting, use and operating and cut-out codes ...............................4
Command keys ..................................................4
Multifunction display .............................................5
Boiler external commands.........................................5
Hot water commands .............................................6
Typical use ......................................................6
Preliminary operations ....................................6
Boiler activation ..........................................6
Temperature setting ......................................6
Anti-legionella function...........................................6
Time and day setting .............................................6
4-digits display setting ...........................................7
Boiler management ..............................................7
Boiler forced preparation ..................................7
Boiler program lling......................................7
Setting of the program of boiler no.3-User ..................7
Menu INFO ......................................................8
Holiday Menu....................................................8
SPA function ....................................................8
Possible operation failure .........................................8
Burner does not switch on .................................8
Low domestic water production ............................9
Boiler inactivity ..................................................9
Safety mode .............................................9
Stand-by and anti-freeze/anti-blocking function ..............9
"Room Anti-Freeze" function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
INSTRUCTIONS FOR THE INSTALLER .............10
Boiler Commissioning Warnings ..........................................10
Servicing recommendations .............................................10
GAS connection ........................................................11
Dimensions, Connections ................................................11
Models 50 kW and 70 kW.........................................11
Models 90 kW and 115 kW........................................12
Safety devices preset and accessories .....................................13
Hydraulic diagram......................................................14
Safety devices kit connection diagram, ow balancer and remote boiler
heating primary circuit .............................................15
Boiler electric diagram:..................................................16
Models 50 kW and 70 kW.........................................16
Models 90 kW and 115 kW........................................17
Power supply and safeties electric connections .............................18
System control electric diagrams .........................................19
Diagram of ow/head available to system (without accessories) ..............20
Electrical connections...................................................22
Access to electronic board ........................................22
Boiler electric connections........................................22
Connection to eventual external safety devices......................22
Electric connection between boiler and boiler unit...................22
External Probe Kit ...............................................23
Installation and setting ...................................23
External Probe Kit with optional Remote Control .............23
Remote Control Kit ..............................................23
Suggestions on Water Characteristics of the system .........................24
System checks .........................................................24
Filling the condensation collecting syphon.................................24
Water treatment for domestic heating systems UNI 8065 Standard ............25
System evaluation procedure ............................................26
Accessories to Be Installed on the System ..................................27
Circulating pump recommendations ......................................27
Filling the Water Circuit .................................................27
GAS conversion ........................................................28
Condensation neutralisation lter Kit .....................................28
Primary exchanger purge................................................28
Automatic air purging valve replacement ..................................28
Flue tting ............................................................29
INSTRUCTIONS FOR THE TECHNICIAN ............30
Boiler parameter setting (technical menu) .................................30
Boiler main parameters (PC) ......................................30
Combustion control and adjustment ......................................31
Heating max. power adjustment ..................................32
Capacity - display - rotations......................................32
Settings on electronic board .............................................33
Alarms - boiler shut-down ...............................................33
ErP Data - EU 813/2013 ..................................................36
Product che - EU 811/2013..............................................37
Technical data .........................................................37
Thermal module components (50kW and 70kW)............................40
Thermal module components (90 kW and 115 kW) ..........................41

3
UTENTE
IAvvertenze per l’utente per l’uso
in sicurezza del gruppo termico
PREMESSA
Il libretto istruzioni fornito a corredo, costituisce parte integrante ed essenziale del gruppo termico.
Conservare con cura il presente libretto per ogni ulteriore consultazione. Queste avvertenze
si propongono di contribuire alla sicurezza nella utilizzazione dei componenti per impianti di
riscaldamento ad uso civile e produzione di acqua calda per uso sanitario, mediante l’indicazione di
quei comportamenti che è necessario ed opportuno adottare al ne di evitare che le loro originarie
caratteristichedisicurezzarisultinocompromessedaeventualiinstallazioninoncorrette,usierronei,
impropri o irragionevoli. La diusione delle avvertenze fornite da questa guida mira anche alla
sensibilizzazionedelpubblicodei“consumatori”aiproblemidellasicurezzamedianteunlinguaggio
necessariamente tecnico ma facilmente accessibile.
AVVERTENZE GENERALI
- PER L'INSTALLAZIONE E' NECESSARIA L'OSSERVANZA DI TUTTE LE REGOLE RIGUARDANTI LE
CARATTERISTICHE, L'INSTALLAZIONE E L'USO DEGLI APPARECCHI A GAS, LA VENTILAZIONE
DEI LOCALI E LO SCARICO DEI PRODOTTI DELLA COMBUSTIONE PRESCRITTI DALLE NORME UNI
ATTUATIVE DELL'ART.3 DELLA LEGGE 1083/71 E DALLE DISPOSIZIONI DI LEGGE.
L'installazionedelmodulotermicodeveessereeettuata,inottemperanzadellenormevigenti
con riferimento alla legge 5/3/1990 n.46 (norme per la sicurezza degli impianti) e relativo
regolamento di applicazione DPR 26/8/1993 n.412, secondo le istruzioni del costruttore e
da personale professionalmente qualicato.
Per personale professionalmente qualicato s'intende quello avente specica competenza
tecnica del settore dei componenti di impianti di riscaldamento ad uso civile e produzione
di acqua calda, come previsto dalla regolamentazione vigente.
- Un'errata installazione può causare danni a persone, animali o cose, per i quali il costruttore
non è responsabile.
- Dopoavertoltoogni imballaggio,assicurarsidell'integritàdelcontenuto.Incasodidubbionon
utilizzare l'apparecchio e rivolgersi al fornitore. Gli elementi di imballaggio (grae, sacchetti
di plastica, polistirolo espanso, ecc.) non devono essere lasciati alla portata di bambini in
quanto potenziali fonti di pericolo.
- Primadieettuarequalsiasioperazionedipuliziaodimanutenzione,disinserirel'apparecchio
dalla rete di alimentazione agendo sull'interruttore dell'impianto e/o attraverso gli appositi
organi di intercettazione.
- Non ostruire le griglie di aspirazione o di dissipazione.
- In caso di guasto e/o di cattivo funzionamento dell'apparecchio, disattivarlo, astenendosi da
qualsiasitentativodiriparazioneodiinterventodiretto.Rivolgersiesclusivamenteapersonale
professionalmente qualicato. L'eventuale riparazione dei prodotti dovrà essere eettuata
da personale professionalmente qualicato utilizzando esclusivamente ricambi originali.
Il mancato rispetto di quanto sopra può compromettere la sicurezza dell'apparecchio. Per
garantire l'ecienza dall'apparecchio e per il suo corretto funzionamento è indispensabile
fare eettuare, da personale professionalmente qualicato, la manutenzione annuale
attenendosi alle indicazioni del costruttore.
- Allorchésidecidadi non utilizzarepiùl'apparecchio,sidovrannorendereinnocuequelleparti
suscettibili di causare potenziali fonti di pericolo.
- Se l'apparecchio dovesse essere venduto o trasferito ad un altro proprietario bisogna
assicurarsi sempre che il libretto d'istruzioni accompagni l'apparecchio in modo che possa
essere consultato dal nuovo proprietario e/o dell'installatore.
- Per tutti gli apparecchi con optionals o kit (compresi quelli elettrici) si dovranno utilizzare
solo accessori originali.
- Questo apparecchio dovrà essere destinato solo all'uso per il quale è stato espressamente
previsto.
USER
fBefore the installation, it is necessary to read carefully the technical instructions.
fBefore ignition, it is necessary:
•to read carefully the use instructions
•to ll the condensation collecting syphon as described on page 24
fBoiler installation must be performed in compliance with legal provisions (M.D.
12/04/1996 and R dossier) and to UNI 11528 2014 standard or to a relevant
installationstandardof a EECcountry. In anycase,it is necessary toremember to:
•Cleanthoroughlytheheatingsystemwithwaterbeforeconnectingtheboiler
to the system itself. In case of existing systems and/or particularly dirty, use
specic cleaning products having proven eectiveness, in correct quantities
according to producer's indications.
•If the system has a power of up to 350 kW and water used to ll the system
has a total hardness of 35°fr, it is necessary to proceed to its softening in
order to reduce hardness, while if it has a total hardness between 15°fr. and
35°fr., a conditioning treatment is enough, aiming at ensuring that water
features are in compliance with the conditions of the UNI 8065 standard. For
systems with power greater than 350 kW, it is necessary to soften the water
used for lling if its hardness is greater than 15°fr. These water treatments
are necessary also in case of system lling.
•Forsystemsfunctioningatlowtemperatures,watertreatmentmustbecarried
outwitha chemical product forwaterconditioning in thecircuit with lming
(protection from corrosion and encrustation), bacteriological and anti-algae
action. It is recommended to use a specic chemical product having proven
eectiveness according to producer's indications.
•For domestic hot water production systems, the UNI 8065 standard foresees
a safety lter to protect systems. Moreover, if water hardness is greater than
25°fr.,itisnecessarytouseasoftenertorestorethehardnessvaluesunder25°fr.
•If,insomeareasoftheheatingsystemorintheboilerinstallationsite,ambient
temperature can go below 0°C, it is advisable to pour an anti-freeze solution
specicforheatingsystemsintothesystem(usuallymadeofpropyleneglycol),
following the indications provided by the producer of anti-freeze liquid.
•After lling the system, it is necessary to purge residual air present in the
heating system using air purging valves located on radiators or in the
distribution collector of underoor heating systems.
fFor detailed descriptions of system lling and purging sequences, refer to the
instruction booklet of the boiler.
ADDITIONAL OPERATIONS FOR CONDENSING BOILERS:
fWhen system is commissioned and in all cases of combustion unit cleaning and
followingemptying,itis necessary to verifythatthere isno air inthecombustion
unit primary circuit; should air be present, proceed to its elimination using the
purging valve located on top of the unit itself following the modes described in
the instruction booklet of the boiler.
CAUTION
InstructIons for the user
IWarning notes for the user, for safe use of
the heating unit
FOREWORD
The instruction manual furnished with the unit is an essential and integral part of the equipment.
Keep the instruction manual handy for further consultation. These warning notes are aimed at
ensuring the safe use of the components of heating systems for domestic use and the production
of hot water. They indicate the proper behaviour to prevent the original safety features from be-
ing jeopardized by improper or wrong installation and by improper, wrong or unreasonable use.
The warning notes provided in this guide also seek to make the consumer more aware of safety
problems in general, using necessarily technical but easily understood language.
GENERAL WARNING NOTES
FORTHEINSTALLATIONITISSTRICTLYNECESSARYTOCOMPLYWITHALLTHEREGULATIONSRELATING
TOTHECHARACTERISTICS,INSTALLATIONANDUSEOFGAS-FIREDEQUIPMENT,ROOMVENTILA-
TIONANDTHEDISCHARGEOFTHECOMBUSTIONPRODUCTS,ASPERTHEUNIIMPLEMENTATION
STANDARDS OF ARTICLE 3 LAW 1083/71 AND LEGAL PROVISIONS.
Installation of the thermal unit must be carried out in accordance with all the latest legally
required safety standards, with reference to law No.46 5/3/1990 (System Safety Standards)
andapplicationstandardPresidentialDecreeNo.41226/8/1993,followingthemanufacturer’s
instructions and by specially trained sta.
Theterm‘qualiedpersonnel’referstothosespecicallytrainedintheeldofheatingsystems
for domestic use and domestic hot water systems, as foreseen by regulations in force.
- Improper installation can cause injuries to people and animals and damage to property, for
which the manufacturer is not responsible.
- After removing the packaging check that there are no broken or missing parts. If in doubt, do
not use the equipment and contact your supplier. The packing (wooden crates, clips, plastic
bags,polystyrenefoam,etc.)arepotentiallydangerousandmustbekeptawayfromchildren.
- Beforecarryingoutanycleaningorservicing,switchotheequipmentfromthemain supply,
using the system’s switch or shut-o devices.
- Do not obstruct the ventilation grilles or heat dissipation grilles.
- If there is any fault or if the equipment is not working properly, de-activate the equipment
and do not attempt to repair it or tamper with it directly. Contact only qualied personnel.
Anyrepairmustbecarriedoutbyqualiedpersonnel.Onlyoriginal sparepartsmustbeused.
Failuretoobservetheaboveinstructionscanendangerthesafetyofthe system.Toguarantee
eciencyandtopperformance,thesystemmustbeservicedannuallybyqualiedpersonnel.
The manufacturer's instructions must be followed.
- If the equipment is not to be used, any potentially dangerous parts should be rendered
harmless.
- If the equipment is sold or transferred to a dierent owner, make sure that the user manual
is dispatched together with the equipment so that the new owner and/or installer can read
it.
- Only original accessories must be used on systems with optional extras or kits (including
electrical parts).
- This equipment should only be used for the purpose for which it was expressly designed.
Any other use is to be considered improper and therefore dangerous.
The manufacturer accepts no liability for any damage caused by improper installation and
use or in case of non-compliance with the manufacturer's instructions.
Important: this thermal module is for heating water at a temperature below
boiling point at atmosphere pressure. It must be connected to a heating system
and/or to a domestic hot water system and must function within its performance
and output limits.

4
UTENTEUSER
Setting, use and operating and cut-out codes
Note: the equipment is pre-set to pilot a domestic hot water production system (besides the heating system). It is possible that some commands or displays related to domestic water
production are present, even if the relevant system is not physically connected.
Command keys
Note:descriptionsrelatetostandardfunction. Inparticularcases,e.g.programming,menuactivationorin presence oforiginalRemote Controlkit (optional),keysmay bedeactivated
or have dierent functions from the ones described.
Stand-by / Operating mode
At each pressure, boiler switches cyclically from OFF mode to Summer and Winter operating modes.The present mode is indicated
by the writing OFF, or through the simultaneous presence of the symbols and (Winter mode) or of the symbol but
not of the symbol (Summer mode) or (Only Heating mode).
Only if combined with
domestic water boiler
Heating adjustment
They adjust heating system temperature. If External Probe Kit is installed, see also "External Probe Kit" on page 23.
Hot water setting:
Theyadjust watertemperaturein domesticwaterstorage. As forhot watertemperature,see also"Hot watercommands"on page6. Only if combined with
domestic water boiler
It shows on the display additional information related to boiler operation. (For details, see "Menu INFO" on page 8).
Press it in order to restore boiler operation after a shut-down.
See "Alarms - boiler shut-down" on page 33 for details on possible shut-downs.
It manually sets activation and deactivation of the boiler quick preparation function. Only if combined with
domestic water boiler
Itactivatesautomatictimeprogrammingoftheboilerpreparationfunction.Itisusedalsoinitsprogrammingandintheclocksetting. Only if combined with
domestic water boiler
The rst ignition must be carried out by qualied personnel (e.g. the installer or an ITALTHERM
authorised Servicing Centre).
SPECIAL RECOMMENDATIONS
If you smell gas:
- close gas cock,
- open the window,
- do not use any electrical switches,
- extinguish any ames,
- contact the Service Center or installer immediately.
RECOMMENDATIONS FOR USE
- Due to the dangers implied, it is strictly forbidden to use exhausts, re places, etc. with the
thermal module, unless the latter is of the sealed-chamber type or special safety measures
are taken during the installation of the thermal module (also in case of future changes or
extensions).
- Checksystempressureatregularintervalsonthehydrometer, andmakesurethatthereading
at cold system is always within the limits specied by the manufacturer. In case of frequent
pressure drops, request the assistance of qualied skilled personnel to eliminate any water
leakage from the boiler.
- Every time the gas cock is reopened, wait for a few minutes before starting the thermal
module again.
- In case of long inactivity periods, close the gas cock and disconnect the main power supply.
- During and for some time after thermal module operation, avoid touching hot parts such as
fume box, ue duct, etc. Any contact with hot parts can lead to serious burns.
- Do not expose the suspended thermal module to the direct steam coming from the hobs.
- Do not let the thermal module get wet from splashing liquids or water.
- Do not place anything on top of the thermal module.
- Do not allow children or inexperienced persons to use the thermal module.
- In case of temporary disuse the following steps should be carried out:
a) empty the water system, if there is no antifreeze;
b) switch o electricity, water and fuel supplies.
- If the thermal module is no longer to be used at all, qualied personnel should carry out the
necessary operations, checking that the electricity, water and fuel supplies are switched o.
- Before carrying out any operation that involves disassembling the boiler or opening covers
or inspection doors, switch o the power supply and turn o gas supply cocks.

5
UTENTEUSER
Multifunction display
… Day of the week
Displayed: during programming, during standard operation if programming is activated.
00147 A 00
Heating - Winter mode
If it ashes, it indicates that the boiler is working in heating mode.
Heating request area
It indicates from which area (main "1", secondary "2" or both) heating request comes from.
Domestic water programming time frame
During domestic water programming (see "Setting of the program of boiler no.3-User" on page 7)
it indicates which time frame, between the two available ones, is being programmed
Available solar system (if connected to the boiler through optional Solar Board)
When boiler is heating solar storage, symbol ashes.
Burner working
Quick boiler preparation
It indicates that the quick boiler preparation function has been activated. It ashes when the boiler is carrying out the quick preparation.
Domestic water - storage heating
It indicates that the boiler is enabled for domestic water heating. If it ashes, it indicates that the boiler is heating.
Heating temperature, in °C (2-digits indicator under the symbol )
It usually indicates the delivery temperature, i.e. the temperature of the liquid circulating in the heating system, coming out of the boiler.
During heating temperature adjustment (through keys and )it displays the set value.
It is displayed when the boiler is shut down or there is an error which can be reset by the User. See "Alarms - boiler shut-down" on page 33 for error identication
and for actions to be undertaken according to each dierent case.
It is displayed when the boiler has a fault or there is an error which can be reset by theTechnician. The user can refer to "Alarms - boiler shut-down" on page 33
for further information and any possible actions to be undertaken according to each dierent case.
Domestic water temperature, in °C (2-digits indicator under the symbol )
It indicates the domestic water storage set temperature.
It indicates that the boiler preparation function is active in a programmed mode.
It indicates, with the symbol , if at the present moment the boiler preparation function is set to ON or OFF.
It is displayed when the two digits on its right indicate the boiler operating power. This information is displayed only while menu is used (see "Menu INFO"
on page 8).
These four digits, in the display lower central area, show dierent information, e.g. during normal operation: present time, heating system pressure, temperature
measuredbyexternalprobe(in thislast case,onlyif thesymbol is visible).Whilemenu isused,other dataaredisplayed.Forthe settingof thedimension
to normally show, see"4-digits display setting" on page 7; for other relevant information see "Menu INFO" on page 8.
When boiler is electrically powered, but in OFF mode, this indicator shows the writing OFF.
They show the type of displayed data item on their left. If they are both switched o, the data item is either a time or expressed in a unit of measurement other
than Bar or °C.
It indicates that the external temperature probe (optional) is connected to the boiler.
Note: in this case, system temperature is automatically adjusted and the use of keys and is dierent: for details refer to the kit documentation
and to paragraph "External Probe Kit" on page 23.
Boiler external commands
Outside the boiler, conveniently positioned in the property (usually by the installer or
by the person in charge of installing the electrical system), there are two devices that
must be used by the user. Their presence and features are prescribed by rules in force:
Omnipolar switch: it is usually positioned near the boiler and must completely isolate
theboiler fromdomesticmains supply. Itmust be usedeachtime the boilerneeds to
be electrically powered, or when power supply of the equipment has to be switched
o, e.g. in case of long inactivity periods (see "Safety mode" on page 9) or in
some alarm cases (see "Alarms - boiler shut-down" on page 33).
Ambient thermostat: it electrically commands to the boiler the activation or the
switching o of the heating system, in order to maintain ambient temperature
(detected by one of its sensors) approximately at a value set by the user. Current
regulations describe its positioning, temperature limits within which the user can
adjust it and the switching on and o periods of the heating system.
Note:ITALTHERMoers anadvancedchronothermostat,with weeklyprogramming at
multi-leveltemperatureandotherinnovativefunctions.Furthermore,aversionwith
radio frequency connection and a version with GSM command are available.

6
UTENTEUSER
Hot water commands
As for hot water production, boiler was designed to be integrated in a system with
domestic hot water storage, usually combined with a solar system and supplied with
specic indicators and commands for domestic water adjustment supplied to users.
Only when a storage temperature probe is directly connected to the boiler, the use of
the keys and determines the temperature at which water in the storage
is heated. If there are no adjustment commands downstream of the boiler unit, this
one regulates water temperature to the user. Otherwise, adjustment of domestic water
temperature in the boiler will aect only the maximum available* temperature and the
"duration" of hot water availability.
(* if external systems, e.g. solar systems, do not supply heat).
More complex systems can manage directly both storage temperature (forcing, if
necessary, heating by the boiler) and temperature to the user. See documentation
supplied with the system or ask the installer or the designer for information.
Storagehightemperaturesenhanceformationofboilerscaledeposits.
Alsogasconsumptiondependsbothonthesettemperatureandontheboiler
thermal insulation quality.
Note:Because ofthermal dispersions along pipes,some timemightbe required before
temperature stabilizes when it comes out of the cock.
If hot water production system is missing, leave the domestic hot water
at factory setting. 55°C.
Typical use
Preliminary operations
fMake sure that the gas cock is open.
fMake sure that the boiler is electrically powered and in OFF mode: only the
writing OFF is displayed.
Boiler activation
fPress key :
•once, in order to use boiler in Summer mode, i.e. use it for hot water production
only. The Summer mode is indicated on the display by the symbol and not
the symbol ;
•press it again in order to use boiler in Winter mode, i.e. use it both for heating
and for hot water production. The Winter mode is indicated on the display by
the symbols and are simultaneously displayed.
•press it again in order to use boiler in Only Heating mode, i.e. disable boiler
preparation(onlytherelevantanti-freezefunctionstaysactive).TheOnlyHeating
mode indicated on the display by the symbol and not the symbol ;
•at each further pressure of the key , boiler cyclically switches to the modes
OFF, Summer , Winter + and Only Heating .
fInWinter + mode, upon request by AmbientThermostat, burner switches
on and the produced heat is transferred, through thermal uid, to the property
heating elements. In case of simultaneous request of hot water, this last request
takes priority for the whole duration of the request itself. Since boiler preparation
requests have a limited duration in time, they usually do not aect room heating.
Temperature setting
Note: a correct setting contributes to create the conditions for energy saving.
Note: if a Low Temperature system Kit or an External Probe Kit is installed, refer to
heating system documentation for its temperature setting.
Note: the heating system temperature described here shall not be confused with
the ambient temperature set on the ambient thermostat.
fHeating setting: pressing keys and , it is possible to set heating
system temperature (the value, during setting, is displayed under the symbol
). In general, during advanced wintertime and/or in case of insucient insulation
of the property (or if the burner stays on for a long time, but ambient temperature
struggles to reach the value set on ambient thermostat), it is advisable to set a
highersystemtemperature.Ontheotherhand,ifambienttemperatureconsiderably
exceeds,duetothermalinertia,thevaluesetonthethermostat,systemtemperature
should be reduced. With the optional external probe kit, system temperature
is automatically set and the use of the keys and is dierent:
for details, see also "External Probe Kit" on page 23.
fHot water adjustment: pressing keys and , it is possible to set hot
watertemperatureintheboilerunitstorage(thevalueisdisplayedunderthesymbol
). As for hot water temperature, see also "Hot water commands" on page 6.
If hot water production system is missing, leave the domestic hot water
at factory setting. 55°C.
Anti-legionella function
At pre-established intervals, boiler in Summer or Winter mode heats up boiler water
automatically in order to eliminate any bacteria (in particular Legionella°spp.) which
tend to form in presence of still and lukewarm water. The activation, if at all, of function,
frequency and treatment duration can be set by the Technician.
Note: The anti-legionella function is not active when boiler is set to OFF or to Only
Heating mode .
Time and day setting
Note: after 20 seconds without pressing any key, the function is quit without storing.
The time and day setting is particularly important if time-related functions want to be
used, e.g. weekly programmer and Holiday Menu.
fWith boiler in OFF mode, press key for at least 5 seconds;
fhours digits ash: set using keys and ;
fpress key . minutes digits ash: set using keys and ;
fpress key . One of the indicators of the day of the week ... ashes:
set with keys and .
Note:youcansettheweek,e.g.withMondayasrstday1(e.g.iftodaywasWednesday
we would set number 3) or any other day, to your discretion.
fstore data and quit the setting by pressing for at least 3 seconds.

7
UTENTEUSER
4-digits display setting
During normal operation, the 4 digits located at the bottom, in the middle of the
display, can show:
•no indication (if you wish that nothing is displayed)
•no indication (data item not available in this model, so non-supported function)
•present time (if time has not been set yet: no indication)
•heating system pressure
•temperature measured by the external probe (only if external probe is installed
and as a consequence visible is displayed; otherwise – – °C" is going to
be displayed)
In order to choose the data item you want to visualise:
fwith boiler in Summer or Winter mode (not in OFF), PRESS KEY once or more
times until the desired visualisation is displayed.
Boiler management
Note: if the system clock has not been set yet (see "Time and day setting" on page 6),
it is not possible to use the boiler weekly programming functions.
Boiler forced preparation
Pressing the button , you can immediately activate (and/or accelerate, according
to the case) a boiler heating cycle.This function is automatically deactivated at the end
of the cycle.
fif boiler was activated short before (both in standard and programmed mode),
function heatsstoragemorequickly (symbol ashing) and ends whenboiler
reaches temperature;
fif boiler is managed in programmed way and in an inactive time frame (symbol
), a quick heating cycle is activated (symbol ashing), therefore the
storage stays in temperature for the rest of this slot (with symbol xed). At
the next active time frame, program resumes its normal operation. Programming
is not modied.
fIn order to deactivate beforehand the function, press the key (the symbol
disappears).
Boiler program filling
Note: after 20 seconds without pressing any key, the function is quit without storing.
It is possible to load one of the three available weekly boiler programmes: two of them
arepre-setinthefactoryandstoredpermanentlyintheboilermemory;thethirdprogram
can be set as described later.
Program 1: ON MON÷FRI 06:00÷09:00 and 17:00÷21:00; SAT÷SUN 06:00÷10:00
and 16:00÷21:00
Program 2: ON every day 06:00÷10:00 and 16:00÷21:00
Program 3: the program can be set by the user (when boiler is new, it is the same
as program 1).
fwith boiler in Summer or Winter mode (not in OFF nor in Only Heating), press the
key for at least 5 seconds: display shows the number of the program currently
selected (P1, P2, P3), on the right;
fselect the desired program using keys and and press key to load
the program;
•with P3 (settable program) program data are displayed: from here it can be
modied as showed in "Setting of the program of boiler no.3-User" on page
7 or load it by pressing for at least 5 seconds;
fat this point the boiler switched back to Summer or Winter. In order to operate the
boiler in a programmed way, press the key : the display must show the symbol
(or according to the present time frame).
Setting of the program of boiler no.3-User
Note: after 2 minutes without pressing any key, the function is quit without storing.
1. Determineoneortwotimeslots,foreachdayoftheweek,inwhichyouintendtouse
warmwaterandin whichyouwish thatboiler water ismaintainedin temperature.
The days of the week can have dierent or the same time slots, as required.
2. with boiler in Summer or Winter mode (not in OFF nor in Only Heating), press the
key for at least 5 seconds:
3. select the program P3 using and and press key to load the
program;
4. the display shows the present day (e.g. day 1), a small number "1" in the top
left side of the display, the symbol and a time, which at the moment
correspondswiththeactivationofthe boilerpreparation,inthersttimeframe
of the rst day, it is set to the indicated time;
5. press the key to modify the time, which starts ashing;
6. use keys and to modify the initial time of the rst time frame of
boiler preparation (steps of 10 minutes each) then press key ;
Note: set times are stored only if key is pressed. This will set programming on
the following event.
7. thesymbol and anothertime aredisplayed,
which means that at the moment the first
deactivation of the boiler preparation, of the rst
day, is set to the indicated time.
8. press (time ashes); with and
modify the nal time of the rst time frame of
boiler preparation (steps of 10 minutes each) then
press key ;
9. the display shows a small number "2" in the top left side of the display, the symbol
and a time, indicating that the second time frame of the boiler pre-
paration is being programmed, of the same day. Proceed to programming as in
the rst time frame;
10.afterpressingthekey forthelasttime,youswitchtoday2whichcanbesetby
repeatingwhatdescribedaboveforday1,orcopyprogrammingofday1onday2:
•go back to day 1, already programmed, pressing key . Press key for
5 seconds: symbol of day 2 ashes;
•press toconrmcopyof day 1onday 2and automaticallyswitchtothe latter;
•similarly, in order to repeat the copy on day 3 etc., it is sucient to press key
for 5 seconds and press to conrm;
11. exit the setting and switch back to Summer orWinter mode pressing the key
for at least 5 seconds.
SLOT or
DAY
onward -
backward
TIMETABLE
increases -
decreases

8
UTENTEUSER
Menu INFO
The display can show various information related to the boiler operation, divided into
dierent "screens". They are usually useful to the Technician, but their display by the
user does not aect the correct boiler operation.
fwith boiler in Summer or
Winter mode (not in OFF),
pressthe key forat least
5 seconds;
fthe display shows the
screen : information
about the present operating
status:
•… : boiler cycle in progress (information for the technician)
•heating, domesticwater:visiblesymbol=availablefunction;ifashing
= in progress (activated); active area/s, solar system,
•= burner working
•numeric indicator 1: system delivery temperature (°C, measured)
•numeric indicator 2: domestic water temperature (°C, measured)
•numeric indicator 3: burner power (% 0-99; 0=minimum, 99=maximum)
•numeric indicator 4: system return temperature (°C, measured)
fpress key : display shows the screen : information about the various
boiler settings:
•heating, domestic water: support the meaning of numeric indicators;
•numeric indicator 1: main area system delivery temperature (set). If external
probe is present , ignore this data item
•numeric indicator 2: domestic water temperature (°C, set)
•numeric indicator 3: secondary area system delivery temperature (set).
fpress button : display shows the screen : information about the
thermoregulation, only if external probe is present :
•heating, active area/s, external probe: support the meaning of
numeric indicators;
•numericindicator1:systemmainareadeliverytemperature,calculatedaccording
toexternaltemperaturemeasuredbytheprobeandtothermoregulationcurvekd
set (if request is in progress)
•numeric indicator 2: thermoregulation curve number kd set
•numeric indicator 3: system secondary area delivery temperature, calculated
accordingtoexternaltemperaturemeasuredbytheprobeandtothermoregulation
curve kd set (if request is in progress)
•numeric indicator 4: external temperature, measured by the probe; if it
indicates –9°C it means that external temperature is of -9°C or lower
fpresskey :ifsolar system ispresent andinterfacedtotheboilerthroughtheSolar
Board (optional original accessory), the display shows the screen : information
about the solar :
•… : Solar system type (information for the technician);
•numeric indicator 1: collector delivery temperature (solar panel)
•numeric indicator 2: solar boiler temperature, upper part
•numeric indicator 3: return temperature towards collector (solar panel)
•numeric indicator 4: solar boiler temperature, lower part
fpressing keys and screens scroll from one direction or the other;
fto quit the menu INFO and go back to standard display, press key . After 15
minutes, switch to standard display is automatic.
Holiday Menu
Note: this function can be used only if clock has been set (see "Time and day setting"
on page 6).
This function enables to switch boiler to OFF for a number of days chosen by the user,
after which boiler will switch to Winter mode again (or, if optional Remote Control is
present, it will switch to the operating mode in which it was while boiler will activate
in Summer mode to enable correct operation of Remote Control).
fWith boiler in OFF mode (not in Summer nor in Winter), press key for at least
5 seconds;
fthe display shows, on the left, the writing "Ho" (rst letters of HOliday) and the
symbol while on the right a number;
fusekeys and tomodifynumberofdaysOFF(donotconsidercurrentday);
fstore and start Holiday cycle by pressing key for 3 seconds.The Holiday function
ends at 23:59:59 of the last set day (according to boiler clock).
Note: It is then possible to set the boiler in dierent modes from OFF, but the Holiday
function will be eective only if boiler is set back to OFF.
SPA function
Note: If the Remote Control is installed (optional), this function can be managed only
from it.
Thisfunction forcesthedomestic watertemperatureto themaximum value,fora period
of 60 minutes, after which the function is automatically deactivated.
fwith boiler in Summer orWinter mode (not in OFF), press the key for at least
5 seconds;
fthedisplayshows,lowandin themiddle,thewriting "SPA"and thenumberunder
the symbol ashes;
ftodeactivatethefunctionbeforethe settime,pressoneofthekeys or .
Possible operation failure
Do not carry out any technician-specic operation, e.g. on electric
circuit, hydraulic circuit or gas circuit, and any other operation not
described in the chapter "User Guide" and expressly intended to the
User. Contact only qualied personnel.
Boilers must be equipped exclusively with original accessories.
ITALTHERMcannotbeconsideredresponsibleforanypossibledamage
resulting from improper, wrong or unreasonable use of non original
materials.
Burner does not switch on
fif room thermostat (or chronothermostat or similar) is installed, check that it is
actually requiring room heating;
fverify that there is electric power supply and that boiler is not set to OFF, but to
Summer or Winter + . The relevant symbols must be visible on the
display (see details in paragraph "Multifunction display" on page 5);
fif the display shows the signal or , or if there is a faulty
behaviour, read paragraph "Alarms - boiler shut-down" on page 33;
fpressure in the boiler must be correct (1÷1.5 bar, cold) and in any case not lower
than 0.5 bar.
00148 01
12
34

9
UTENTEUSER
Low domestic water production
fCheck that domestic water temperature is not set to a too low value, in this case
adjust it (see "Temperature setting" on page 6);
fhave the gas valve adjustment checked;
fhave the domestic water coil pipe checked and, if necessary, have it cleaned.
N.B.: In areas where water is particularly "hard", it is advisable to install on
domestic water inlet a suitable device which prevents limescale precipitation;
toofrequentcleaning operationsofthe boilercoil pipearethusnot carriedout.
Boiler inactivity
Eects of inactivity periods can be relevant in particular cases such as in homes used for
few months a year, mostly in cold locations.
The User will have to evaluate whether switch the boiler to the safety mode and
disconnect all supplies or whether leave it set to OFF (powered) to use the anti-
freeze function. In general, the safety mode is preferred.When freezing may occur, it
is advisable to choose between pros and cons of the safety mode and of the stand-by/
anti-freeze mode.
Safety mode
fSwitch o the general switch on the electric supply line of the boiler;
fClose gas cock;
If temperature can go below 0°C, have the following operations carried out by
your technician:
•ll the system, including the boiler unit primary circuit and the relevant coil
pipe, with anti-freeze solution (except when system has already been lled
with this solution), or have it completely emptied. Should pressure have to be
restored (due to possible leakages) in a system already lled with anti-freeze
solution, its concentration might decrease and the anti-freeze protection might
no longer be ensured.
•in any case, have the condensation-collecting siphon emptied after unscrewing
its lower cap.
•have the domestic hot and cold water system emptied, including the domestic
water circuit and the boiler domestic water storage.
Note: The boiler is equipped with a system which protects the main components from
therareblockingcasesduetoinactivityinpresenceofwaterandlimescale.Theanti-
blocking system cannot work during the safety mode due to lack of power supply.
Before switching on the boiler, make sure that the circulating pump is
not blocked due to inactivity: in the middle of the cap there is a hole (should
there be a cap, remove it) that gives access to the rotor shaft; push and turn
it using a suitable tool, usually a "Phillips" screwdriver.
Stand-by and anti-freeze/anti-blocking function
When boiler is left to OFF for the inactivity period, it will be protected from freezing
through functions set in the control equipment which heat the concerned parts when
temperatures go below the minimum values predened in the factory. Anti-freezing
heating is reached through switching on of the burner and of the circulating pump.
Moreover, boiler in stand-by periodically activates main internal components to avoid
the rare blocking cases caused by inactivity in presence of water and limescale. This
happensalsowhenboilerisshutdown(redlighton),butonlyifsystempressureiscorrect.
In order for these systems to be active:
•boiler must receive power and gas supply;
•boiler must be left in OFF mode (writing OFF displayed);
•systemwaterpressuremusberegular(optimal:1÷1.5bar,cold,minimum0.5bar).
If, in case of gas supply interruption or boiler shut-down (red light on), for this or other
reasons, boiler cannot be switched on. In this case, the anti-freeze function is carried
out by activating circulating pump activation.
ATTENTION: anti-freezeprotectioncannotbe activatedincaseof lackofelectric
powersupply.Shouldthisbelikelytohappen,itisadvisabletopouragood-brand
anti-freeze solution in the heating system, following producer's indications.
It is necessary to ask directly the installer information about the
anti-freeze solution poured in the heating system at the moment of
installation.
The boiler, when power supply is restored, will check temperatures detected
by its probes and in case freezing should be suspected, veried through a
particular automatic check cycle, alarm 39 will be triggered. For details see
relevant description in paragraph "Alarms - boiler shut-down" on page 33.
It is recommended to have the domestic hot and cold water system emptied,
including the domestic water circuit and the boiler domestic water storage.
The anti-freeze function does not protect the domestic water cycle outside the
boiler.
"Room Anti-Freeze" function
Note:if youwant touse the"roomanti-freeze"functionavailablein many commercial
chronothermostats or thermostats, it is necessary to leave the boiler in Winter
mode + and NOT in OFF mode.
The "Room Anti-Freeze" function does not ensure protection of the domestic
water circuit outside the boiler, in particular of the areas not reached by the
heating system. It is therefore necessary to have the parts of the domestic hot
and cold water system emptied, including the boiler domestic water storage,
should these be likely to freeze.

10
INSTALLER
Boiler Commissioning Warnings
iBoilercommissioning andservicingmustbecarriedout byqualiedtechnicians.
The conversion of a gas belonging to one family (natural or liquid gas) to one
belonging to a dierent family can be made also after the boiler has been installed, and
must be made by qualied personnel only. The expert will have to check:
a) that the data on the identication plate comply with those of mains power, water
and gas supply lines;
b) that the calibration of the burner is compatible with the boiler power;
c) the correct function of the fume exhaust duct;
d) that combustion, air infeed and fume discharge are carried out correctly based
on the provisions of the prevailing National and Local Standards (M.D. 12/04/96;
StandardsUNI-CIG7129/01and 7131/99;P.D. 412/93and followingamendments);
e) that the aeration conditions are ensured if the boiler is housed inside furniture
cabinets.
SAFETY LAWS AND STANDARDS FOR BOILER INSTALLERS
Italian Legislative Decree 19/09/94, no. 626
“Implementation of 89/391/EEC; 89/655/EEC, 90/296/EEC, 90/934/EEC, 90/679/EEC
directives for the improvement of the health and safety of workers in the workplace"
D. Lgs, 04/12/1992, no. 475
“Implementation of 89/686/EEC Council Directive of December 21, 1989 concerning the
harmonizationofMemberStates'nationallawsonpersonalprotectiveequipment(PPE)”
When handling, installing and servicing boilers, take special care with the metal parts
in order to avoid any injury such as cuts and abrasions. Always wear gloves during the
aforesaid operations.
REFERENCE LAWS AND STANDARDS RELATING TO THE INSTALLATION, USE AND
SERVICING OF BOILERS
Law 05-03-90 no. 46
"Systems Safety Standards”.
Presidential Decree 06-12-91 No.447
“Regulation for the Implementation of Law No. 46 dated March 5th 1990 on systems
safety standards”.
Law No. 10 dated January 9th 1991
“Standards for the implementation of the National Energy Plan on the rational use of
energy, energy saving and renewable sources of energy development.”
Presidential Decree Presidential Decree No. 412 dated August 26th 1993 and
following amendments“Regulation providing standards for the installation and
servicing of building heating systems for the containment of energy consumptions, as
implementation of art. 4, paragraph 4 of Law No. 10 dated January 9th 1991.”
ATTACHMENT G TO PRESIDENTIAL DECREE No. 412 dated August 26th 1993 and
Ministerial Decree dated March 17th 2003“System Manual”.
Installation standard UNICIG 7129/01
“Gas systems for domestic use supplied by network distribution”.
Installation standard UNICIG 7131/99
“Liqueed petroleum gas systems for domestic use not fed by pipe network.”.
Electrical Systems IEC 64-8 standard. Ministerial Decree dated April 12th 1996
“Approval of the thermal rule for re prevention for the design, manufacturing and
operation of heating systems supplied with gaseous fuels”.
Servicing recommendations
All servicing and gas conversion operations SHALL BE CARRIED OUT BY QUALIFIED
PERSONNEL pursuant to Law No. 46 dated March 5th 1990, and in compliance with UNI-
CIG 7129/01 and 7131/99 standards and subsequent updates. In addition, SERVICING
operationsshallbecarriedoutbasedontheschedulerecommendedbythemanufacturer
and in compliance with the prevailing UNI and IEC standards. To ensure good boiler
performance, servicing should be carried out at least once a year.
- Removal of any possible oxidization from burners;
- Cleaning of any scale from exchangers and electrodes;
-Checkofgoodconditionandstabilityoftheceramicbrecoatinginsidethe combustion
chamber and replacement, if needed;
- Switching on, switching o and operation of the device control;
- Check of water and gas connecting pipes and couplings sealing;
- Check of gas consumption at max. and min. power values;
- Check of proper operation of safety devices;
- Check for correct operation of equipment command and adjustment mechanisms;
- Periodical check of correct operation of fume exhaust duct.
- Do not clean the room where boiler is installed when this latter is working;
- System panels shall be cleaned with soapy water, only. Do not clean panels, painted
and plastic parts with paint diluents.
- Any time some part needs changing, always use original spare parts supplied by
ITALTHERM.
ITALTHERM declines any responsibility for the installation of non-original spare parts.
"Once checking and servicing operations are completed, the operator shall write and
sign a report, to be given to system manager, who will have to sign a copy for receipt
and acknowledgement. ..." (Presidential Decree 412/93 and subsequent amendments);
InstructIons for the Installer

11
Dimensioni, attacchi
Modelli 50 kW e 70 kW
ATTENZIONE! Prevedere la posizione della caldaia in modo da lasciare uno spazio sotto di essa adeguato all'ingombro in altezza del Kit INAIL ed alla relativa raccorderia di
collegamento. Si consiglia di lasciare almeno 1250 mm.
INSTALLER
Dimensions, Connections
Models 50 kW and 70 kW
ATTENTION! Position boiler so as to leave a space under it that allows the installation of the eventual safety devices (as required by the local/national regulation in force)
and the relevant connection ttings. See also "Safety devices preset and accessories" on page 13.
GAS connection
Carry out the following checks:
a) cleaning of all the gas intake pipes to remove any residue which may impair the boiler operation;
b) check that the gas supply line and gas train comply with current standards and regulations (UNI-CIG 7129/01, 7131/99 Standards - M.D. of 12/04/96);
c) check the inner and outer seals of the gas supply system and connections;
d) supply pipe shall have a section equal to or higher than that of boiler;
e) check that the supplied gas corresponds to the gas used for boiler setting; if this is not the case, have the boiler settings changed by qualied and authorised personnel;
f) check that a shut-o cock is installed upstream of the system.
Open the meter cock and bleed the air o system pipes, then bleed air o each piece of equipment.
00183 02
SC SC
143
AS
25
89
475
68
173 120
450
157
68
GFMSS R
CEL
CEL
175
~ 85
~ 265
~ 175
28 28
30 30
17
83720
475
65
157 157
82
front view side view
upper side view
Legend:
A Suction (Ø 80 mm)
S Discharge (Ø 80 mm)
M System delivery (1¼”M)
SS Safety valve discharge (¾”F)
G Gas (1”M)
SC Condensation discharge (Ø 25mm) (approximate position)
F System lling connection point, with cap (½”M)*
CEL Electric connections (approximate position)
M System return (1¼”M)
* includes non-return valve.Any shut-o devices for system
lling, outside the boiler, are managed by the installer. If
the connector is not used, leave it closed using a sealed cap.

12
Modelli 90 kW e 115 kW
ATTENZIONE! Prevedere la posizione della caldaia in modo da lasciare uno spazio sotto di essa adeguato all'ingombro in altezza del Kit INAIL ed alla relativa raccorderia di
collegamento. Si consiglia di lasciare almeno 1250 mm.
00218 01
SC SC
143
AS
25
615
142.5 142.5
248 250
600
102
65
157 157
82
GFMSS R
CEL
CEL
175
~ 85
~ 265
~ 205
28 28
30 30
17
83720
615
89
INSTALLER
Models 90 kW and 115 kW
ATTENTION! Position boiler so as to leave a space under it that allows the installation of the eventual safety devices (as required by the local/national regulation in force)
and the relevant connection ttings. See also "Safety devices preset and accessories" on page 13.
Legend:
A Suction (Ø 100mm)
S Discharge (Ø 100mm)
M System delivery (1¼”M)
SS Safety valve discharge (¾”F)
G Gas (1”M)
SC Condensation discharge (Ø 25mm) (approximate position)
F System lling connection point, with cap (½”M)*
CEL Electric connections (approximate position)
M System return (1¼”M)
* includes non-return valve.Any shut-o devices for system
lling, outside the boiler, are managed by the installer. If
the connector is not used, leave it closed using a sealed cap.
front view side view
upper side view

13
Kit INAIL, accessori e prodotti consumabili
1
1.3
1.1
1.16
(5)
(5)
(2)
(4)
2
2.1
3.1
3
4
5
1.13
1.2
1.15
4.1
5.1
5.2
5.2
1.14
INSTALLER
Safety devices preset and accessories
KEY
1Safety devices
1.1 Hydraulic manifold for safety devices
1.2 Safety valve discharge (funnel + section)
1.3 Expansion tank connector
1.13 3-way shut-o delivery valve.
1.14 Return shut-o valve
1.15 “Y”lter
1.16 Return connection (use with models 50K and 70K
only if there is no 3-way by-pass valve kit pos. 5 cod.
401150001; always use with models 90K and 115K)
2Micro bubble separator kit cod. 401150003
2.1 Connector for delivery to external boiler (always to
be used instead of connector 1.11 when this kit
is available)
3Insulated, horizontal ow balancer kit cod. 401150005
3.1 Air purging valve
4Micro impurity bubble separator kit cod. 401150002
4.1 Discharge cock
53-way by-pass valve kit cod. 401150001
(only for 50K and 70K models)
5.1 Assembly correct position: detail
5.1 Connector for return from external boiler
The 3-way valve MUST be installed with connection A
upward and the connectionBdownward, as shown.
Height of the standard hydraulic kit, assembled
as illustrated and without connectors under
balancer 3, is of ca. 1130 mm.
401150009
Plate exchanger
68 kW - 1"¼
(alternatively to
balancer 3)

14
Schema circuito idraulico
10
11
12
13
3
1
19
16
17
15
14
MI
M R
G
RI
SS SC
LEGENDA
1 Generatore di calore
2 Pozzetto per termometro di prova
3 Attacco per vaso espansione
4 Rubinetto a tre vie porta manometro con angia di
prova per manometro campione
5 Manometro
6 Termometro
7 Pressostato di blocco pressione minima
8 Attacco mandata per bollitore esterno (usare solo se
non è presente il separatore di microbolle 10)
9Attacco per eventuale valvola di sicurezza INAIL
10 Separatore microbolle
11 Attacco mandata per bollitore esterno (da utilizzare al
posto dell'attacco 8 quando è presente il separatore di
microbolle 10)
12 Valvola di intercettazione mandata a 3 vie
13 Equilibratore di portata
14 Valvola di intercettazione ritorno
15 Filtro ad "Y"
16 Kit Separatore di microimpurità
17 Kit valvola deviatrice a 3 vie
18 Valvola intercettazione combustibile
19 Scarico valvola di sicurezza (imbuto + tronchetto)
20 Termostato di blocco sicurezza temperatura impianto
(termostato limite)
21 Pozzetto per la sonda della valvola intercettazione combusti-
bile (18)
22 Pressostato di blocco pressione massima
MMandata modulo termico
SS Scarico valvola di sicurezza
GIngresso Gas modulo termico
SC Scarico condensa
RMandata modulo termico
MI Mandata impianto
RI Ritorno impianto
INSTALLER
Hydraulic diagram
KEY
1 Heat generator
3 Expansion tank connector
10 Micro bubble separator
11 Connector for delivery to external boiler (use instead of
connector 8 when there is micro bubble separator 10)
12 3-way shut-o delivery valve.
13 Flow balancer
14 Return shut-o valve
15 "Y" lter
16 Micro impurity bubble separator kit
17 3-way by-pass valve kit
19 Safety valve discharge (funnel + section)
20 System temperature safety block thermostat
(limit thermostat)
21 Trap for fuel shut-o valve probe (18)
22 Maximum pressure switch
MThermal module delivery
SS Safety valve discharge
GThermal module Gas inlet
SC Condensation drain
RThermal module delivery
MI System delivery
RI System return

15
44
10
12
13
43 45
1
16
17
41
42
41
42
ACS
AFS
43
43
43
15
14
MI
M R
G
RI
SS SC
INSTALLER
Schema collegamento kit sicurezze INAIL, equilibratore di portata e circuito primario di riscaldamento
bollitore remoto
KEY
1 Heat generator
10 Micro bubble separator
12 3-way shut-o delivery valve.
13 Flow balancer
14 Return shut-o valve
15 "Y" lter
16 Micro impurity bubble separator kit
17 3-way by-pass valve kit - see
18 Fuel shut-o valve
20 Operating and cut-out thermostat (limit thermostat)
21 Trap for fuel shut-o valve probe (18)
22 Maximum pressure switch
41 Non-return valve
42 Zone circulating pump
43 System shut-o valve - see
44 System lter
45 Boiler - see
MThermal module delivery
SS Safety valve discharge
GThermal module Gas inlet
SC Condensation drain
RThermal module delivery
MI System delivery
RI System return
ACS Domestic hot water
AFS Domestic cold water
The 3-way by-pass valve kit can be installed only on boiler models 50K and 70K.
Thecombinationofmodels90Kand115Kwithdomesticwaterboilerunit(pos.45)mustbecarriedoutdownstreamofthebalancer,withcorrectlydimensionedcomponents
chosen by the Designer.
Safety devices kit connection diagram, ow balancer and remote boiler heating primary circuit

16
Schema elettrico caldaia
Modelli 50 kW e 70 kW
Abbreviazioni: COM Comune * NC Normalmente chiuso (contatto) NO Normalmente aperto (contatto) RIS Riscaldamento (comando deviazione) SAN Sanitario (comando deviazione)* * N.B. se è prevista la Pompa Rilancio Sanitario PRS,
collegarla alla morsettiera 66, terminali COM e SAN
Vedere pagina 19
Vedere pagina 19
INSTALLER
Boiler electric diagram:
Models 50 kW and 70 kW
46 47
M4
M10M11
M25
M9
M1
M2 M16
M15
M13
3 4 2 1
L
N
M13
M25
BN BN BN
BN
YE-GN
BN
BU BU
GY
BK
VT
VT M24 - 26
M24 - 33
VT
VT
WH WH
BK BK
YE-GN
GN WH
BN BU
BN
YE-GN BN
BU YE-GN
BK RD
RD
WH
GN
BN
BU
VT
BU
GN
RD
BN
VT
BK
BU
RD WH BU GN BN
BK
BN
BU
YE-GN
YE-GN
BU
BN
GN
ROSSO
RD WH
BN
BU
BK
GN
BN BU
GN BU BU
OG
GY
N
L
5048 49 51 52
5048 49 51 52
4442 43 45
2 1
40
41
53
54
55
56
57
58
59 60 61 62 63 64 65
7677
7879
46 47
21 22 25 24 23 28 27 26
21 22 25 24 23 28 27 26
3 2 1 6 5 4
9 8 7
2
36 34 35 33 37
1453
10 70 69 68 71 72
73 74 75
73 74 75
38 39
3 2 1 6 5 49
8 7
10 71 70 69 68 72
M8
M7
M12
S1
TF1
M11
4442 43 45
M9
M4
30
29
31
34
33
32
37
36
35
30
29
31
34
33
32
37
36
35
39 38
M6
M1
M2
M15
3 4 5 2 1
M22
M16
P1
M17
P2
TF2
M13
M5
27
26
28
24
23
25
34
33
29
30
31
32
M24
M22...
M5...
M6/38
M6/39
12.1/PWM F
12.1/HALL F
12.1/GND
M24/25
M24/23
M24/24
M10
6059 61 62 63 64 65
L3
N
L2 L1
L3
N
L2 to INAIL KIT L1
7
27 5
18
24
8.1 8.2
62
60
70
4
29
11
25
00184 INT 03
61
73
72 TA2
71
23
64
65
66
67
8.2
12.2
12.1
62
TB STB
(VD)
63
Abbreviations: COM Common * NC Normally closed (contact) NO Normally open (contact) RIS Heating (deviation command) SAN Domestic Water (deviation command)* * N.B.: if Domestic Water Booster Pump PRS is foreseen,
connect it to terminal board 66, terminals COM and SAN
See
page 19
See page 19
BK Black BN Brown BU Blue GN Green GY Grey
OG Orange RD Red VT Violet
WH
White
YE Yellow
to safeties
Series of safety devices contacts (closed in normal conditions). Jumper if unused.

17
Modelli 90 kW e 115 kW
INSTALLER
Models 90 kW and 115 kW
Abbreviations: COM Common * NC Normally closed (contact) NO Normally open (contact)
See page 19
See page 19
46 47
M4
M11
M25
M9
M1 M2
M16
M15
3 4 2 1
M13
M25
LN
BN BN BN
BN
BN
BN
BN
YE-GN
BN
BU BU
GY
BK
VT
VT VT
VT
WH WH
BK BK
YE-GN YE-GN
GN WH
BN BN BU BU
BN BU
BN
BN
BU
YE-GN
YE-GN BU BN
BK RD
RD
WH
GN
BN
BU
VT
BU
GN
RD
BN
VT
BK
BU
RD WH BU GN BN
BK
YE-GN
YE-GN
BU
BN
GN
RD
BK WH
GN
BN BU
GN BU BU
OG
N
L
5048 49 51 52
5048 49 51 52
4442 43 45
2 1
40
41
53
54
55
56
57
58
59 60 61 62 63 64 65
7677
7879 21
22 25 24 23 28 27 26
21 22 25 24 23 28 27 26
3 2 1 6 5 4
9 8 7
2
36 34 35 33 37
1453
10 70 69 68 71 72
73 74 75
73 74 75
38 39
3 2 1 6 5 49
8 7
10
71 70 69 68 72
M8
N
L
M0100
M0101
M0101
M0102
N
L
M7
M12
S1
TF1
M11
4442 43 45
M9
M4
30
29
31
34
33
32
37
36
35
30
29
31
34
33
32
37
36
35
39 38
M6
M1
M2
M15
3 4 5 2 1
M22
M16
P1
M17
P2
TF2
M13
4AL 250V
1 2 3 4 5 6
7 8 9
M5
27
26
28
24
23
25
34
33
29
30
31
32
M24
M22...
M5...
M6/38
M6/39
12.1/PWM F
12.1/HALL F
12.1/GND
M24/25
M24/23
M0102/1
M0102/2
12.2
M0102/6 M0102/5
12.2 8.2 8.2
M24/24
M10
6059 61 62 63 64 65
L3NL2L1
L3NL2L1
Al kit INAIL
M24 - 26 M24 - 33
7
27 5
18
24
8.1 8.2
62
60
68
70
30
4
29
11
25
00221 02
61
73
72 TA2
71
23
64
65
66
67
12.2
12.1
62
TB STB
(VD)
63
BK Black BN Brown BU Blue GN Green GY Grey
OG Orange RD Red VT Violet
WH
White
YE Yellow
to safeties
Series of safety devices contacts
(closed in normal conditions).
Jumper if unused.

18
Collegamenti elettrici alimentazione e kit INAIL
L
Power supply
N
To Boiler
BN
BU
L
N
BN
YE-GN
L3NL2L1
L3NL2L1
00185 C 00
64
81
82
83
00187 00
65
63
M8
66
Rispettare la polarità L-N dell'alimentazione. Interporre un interruttore onnipolare con apertura dei contatti di almeno 3mm.
4 Fusibile termico gruppo
combustione(*)
5 Elettrodo accensione 7 Accenditore a scarica 8.1 Motoventilatore - controllo
velocità
8.2 Motoventilatore - alimentazione 11 Sonda temperatura ritorno
impianto
12.1 Circolatore modulante -
controllo velocità
12.2 Circolatore modulante -
alimentazione
18 Valvola gas (comando apertura) 23 Trasduttore pressione impianto 24 Sonda temperatura mandata
impianto
25 Termostato sicurezza caldaia
(mandata)(*)
27 Elettrodo rilevazione 29 Fusibile termico fumi (*) 60 Scheda display 61 Fusibile F2A (2 A rapido) 62 Tastiera comandi 63 Resistore 2.2 kOhm - 1/2W (**) 64 Connettore alimentazione/kit
INAIL originale (**) (***)
65 Morsettiera per collegamenti
bollitore
66 Morsettiera per collegamento
Kit Valvola deviatrice VD (solo modd. 50kW e 70kW) o comando Pompa Rilancio Sanitario PRS
67 Morsettiera per comando
Pompa Rilancio Riscaldamento PRR
68 Scheda carichi elettrici Componenti esterni, opzionali: 70 Termostato ambiente: Contatto semplice
Termostato Ambiente o Cronotermostato (da commercio) in bassissima tensione di sicurezza SELV. Contatto chiuso = richiesta attiva.
Comando remoto: terminali del dispositivo
di comando remoto originale, conforme al protocollo OPENTHERM. Vedere anche pagina 16. Per installare, togliere la giunzione tra i due conduttori e collegare ai terminali del dispositivo (eventualmente prolungare)
71 Predisposizione per kit impianti a zone
con comando remoto
72 Predisposizione per termostato
sicurezza impianto a pavimento
73 Predisposizione per kit sonda esterna 81 Termostato di blocco sicurezza
temperatura impianto (termostato limite) (*) (**)
82 Pressostato di blocco pressione minima
(*) (**)
83 Pressostato di blocco pressione
massima (*) (**)
TA2 Predisposizione per termostato
ambiente zone a temperatura dierenziata
TB Termostato accumulo sanitario (*) (**) STB Sensore temperatura accumulo
sanitario. Incluso nel Kit Valvola deviatrice a 3 vie
VD (**)
VD Kit Valvola deviatrice a 3 vie (solo
modd. 50kW e 70kW) (**)
PRR Pompa Rilancio Riscaldamento
(prevedere relè di pilotaggio)
PRS Pompa Rilancio Sanitario
(prevedere relè di pilotaggio)
(*) i contatti di questi componenti sono ragurati in
condizione di riposo / a freddo.
(**) per dettagli vedere "Collegamenti elettrici
alimentazione e kit INAIL" a pagina 18
(***) è possibile rimuovere il connettore per collegare la
caldaia a kit INAIL non originali
INSTALLER
Power supply and safeties electric connections
Remark: the contact of the minimum pressure switch
82(normally open) is shown in rest condition,
i.e. at no system pressure. In conditions of normal operation, the system has the correct pressure and also this contact will be closed.
Respect L-N polarity of power supply. Insert an omnipolar switch with contact open- ing of at least 3 mm.
4 Combustion unit thermal
fuse(*)
5 Ignition electrode 7 Discharge igniter 8.1 Motor-driven fan - speed control 8.2 Motor-driven fan - power
supply
11 System return temperature
probe
12.1Modulating circulation pump -
speed control
12.2Modulating circulation pump -
power supply
18 Gas valve (opening control) 23 System pressure transducer 24 System delivery temperature
probe
25 Boiler safety thermostat
(delivery)(*)
27 Detection electrode 29 Fume thermal fuse (*) 30 Combustion unit thermostat
(manual reset) (*)
60 Display board 61 F2A fuse (quick 2 A) 62 Control keyboard 63 2.2 kOhm - 1/2W (**) resistor 64 Power supply connector through
safeties kit (**) (***)
65 Boiler connection terminal
board
66 Terminal board for connection
of VD by-pass valve kit (only models 50kW and 70kW) or PRS Domestic Water Booster Pump
67 Terminal board for PRR Heating
Booster Pump control
68 Electric charges board
External components, optional: 70 Ambient thermostat: Ambient
Thermostat or Chronothermostat (available on the market) simple contact in very low SELV safety voltage. Closed contact = active request.
Remote control: terminals of the original
remote control device, in compliance with the OPENTHERM protocol. See also page 16. To install, remove junction between the two conductors and connect to device terminals (extend if necessary)
71 Preparation for area system kit
with remote control
72 Preparation for underoor heating
system safety thermostat
73 Preparation for external probe kit 81 System temperature safety block
thermostat (*) (**) (•)
82 Minimum pressure switch (*) (**) (•) 83 Maximum pressure switch (*) (**) (•) TA2 Preparation for dierentiated
temperature areas ambient thermostat
TB Domestic water storage thermostat (*)
(**)
STB Sensor for domestic water storage
temperature. Included in the VD 3-way by-pass
valve kit (**)
VD 3-way by-pass valve kit - (only models
50kW and 70kW) (**)
PRR Heating Booster Pump
(foresee piloting relays)
PRS Domestic Water Booster Pump
(foresee piloting relays)
(*) contacts of these components are shown in rest / cold
position.
(**) for details see "Power supply and safeties electric
connections" on page 18
(***) the complete (male+female) connector is supplied, to
properly connect the boiler to power supply of single or cascade systems
(•) Optional component, that can be required or not
according to local or national regulations
Safeties wiring example Refer to local/national regulation for the requirements of these devices. If safety devices are not required, don't forget to jumper terminals L1 and L2 together in the connector 64 - power supply side (see diagram).

19
Schemi elettrici comando asservimenti impianto
N.C.
BK
RD N.C.
WH
BU
BN
BK
WH
BU
BN
BK
RD
WH
BU
BN
BK
WH
BU
BN
BK
RD
WH
BU
BN
BK
WH
BU
BN
N.C.
3 SAN
2 COM
1 RIS
VD
66
L
N
PRR PRS
67
66
L
N
PRR PRS
67
66
L
N
PRS
67
66
L
N
PRS
67
66
67
66
L
N
PRR
67
L
N
PRR
00224 INT 01
INSTALLER
System control electric diagrams
50 kW and 70 kW models with both Domestic Water (PRS) and
Heating Booster Pumps (PRR)
Set parameter 44 to the value 3
90 kW and 115 kW models with both Domestic Water (PRS) and
Heating Booster Pumps (PRR)
Set parameter 44 to the value 3
50kWand70kWmodelswithDomesticWater
Booster Pump (PRS) only
Set parameter 44 to the value 3
Models50kWand70kWwithHeatingBoosterPump(PRR)onlyand
possible domestic water By-Pass Valve (VD).
Set parameter 44 to value 0 - 1 or 2 according to needs
90 kW and 115 kW models with Domestic Water Booster Pump
(PRS) only
Set parameter 44 to the value 3
90 kW and 115 kW models with Heating Booster Pump (PRR) only
Set parameter 44 to value 0 - 1 or 2 according to needs
BK Black
BN Brown
BU Blue
GN Green
GY Grey
OG Orange
RD Red
VT Violet
WH White
YE Yellow

20
INSTALLER
Diagram of ow/head available to system (without accessories)
Diagram of ow/head available to system net of load loss (excluding optional accessories) Note: thermal module circulation pump is modulating, therefore, diagrams show
maximum and minimum work limits.
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
6,5
7
7,5
8
8,5
0 200 400 1000 1200600 800 1400 1600 1800
Portata l/h
Prevalenza m H
2
O
MAX
MIN
50 K
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
5,5
6
6,5
7
7,5
8
8,5
9
9.5
0 200 400 1000 1200600 800 1400 1600 1800 2000 22002400 2600 3000
2800
Portata l/h
Prevalenza m H
2
O
MAX
MIN
70 K