Potterton SIRIUS FS 50-70 User manual

0085
en
ie
SIRIUS
FS 50-70
FLOOR STANDING CONDENSING GAS BOILERS
INSTALLATION, OPERATION AND MAINTENANCE MANUAL

27115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
ATTENTION
This boiler can only be installed and operate
in permanently, ventilated rooms in accordance with
BS6644
Dear Customer,
Our company is condent our new product will meet all your requirements. Buying one of our products gua-
rantees all your expectations: good performance combined with simple and rational use.
Please do not put this booklet away without reading it rst: it contains useful information for the correct and
efcient use of your product.
Our company declares that these products are marked in compliance with the essential requirements
of the following Directives :
- Gas Directive 2009/142/EC
- Efciency Directive 92/42/EEC
- Electromagnetic Compatibility Directive 2004/108/EC
- Low Voltage Directive 2006/95/EC
Our company, constantly striving to improve the products, reserves the right to modify the details given in this
documentation at any time and without notice. These Instructions are only meant to provide consumers with use
information and under no circumstance should they be construed as a contract with a third party.
The appliance can be used by children aged 8 or over and by people with reduced
physical, sensory or mental faculties, or who do not have the required experience
or knowledge, provided they are supervised or have received instructions on
using the appliance safely and understanding its intrinsic hazards. Children must
not play with the appliance. The cleaning and maintenance operations reserved
to the user must not be performed by unsupervised children.

37115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
1. Instructions prior to installation 4
2. Instructions prior to commissioning 4
3. Commissioning of the boiler 5
4. Filling the boiler 12
5. Switching the boiler off 12
6. Prolonged standstill of the system. Frost protection 12
7. Servicing instructions and gas change 12
8. General information 13
9. Instructions prior to installation 13
10. Boiler installation and dimensions 14
&KLPQH\ÁXHFRQQHFWLRQ 
12. Connecting the mains supply 23
13. Adjusting the gas valves and gas change 30
14. Setting the boiler parameters 32
15. Control and operation devices 34
3RVLWLRQLQJRIWKHLJQLWLRQDQGÁDPHVHQVLQJHOHFWURGH 
17. Check of combustion parameters 35
18. Activating the chimney-sweep function 36
19. Annual service 36
20. Thermal fuse replacement of heat exchanger 36
21. Boiler schematic 37
22. Illustrated wiring diagram 38
23. Technical data 39
CONTENTS
INSTRUCTIONS PERTAINING TO THE USER
INSTRUCTIONS PERTAINING TO THE INSTALLER

47115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler
must be connected to a central heating system and/or to a domestic hot water supply system in compliance
with its performances and output power.
7KHERLOHUPXVWEHLQVWDOOHGE\D4XDOLÀHG6HUYLFH(QJLQHHUDQGHQVXUHWKHIROORZLQJRSHUDWLRQVDUHFDUULHG
out:
D&KHFNWKDWWKHERLOHULVÀWIRURSHUDWLRQZLWKWKHW\SHRIJDVDYDLODEOH)RUPRUHGHWDLOVVHHWKHQRWLFHRQWKH
packaging and the label on the appliance itself.
E&DUHIXOFKHFNLQJWKDWWKHÁXHWHUPLQDOGUDIWLVDSSURSULDWHWKDWWKHWHUPLQDOLVQRWREVWUXFWHGDQGWKDWQR
RWKHUDSSOLDQFHH[KDXVWJDVHVDUHH[SHOOHGWKURXJKWKHVDPHÁXHGXFWXQOHVVWKHÁXHLVHVSHFLDOO\GHVL-
JQHGWRFROOHFWWKHH[KDXVWJDVFRPLQJIURPPRUHWKDQRQHDSSOLDQFHLQFRQIRUPLW\ZLWKWKHVWDQGDUGVDQG
regulations in force.
F&DUHIXO FKHFNLQJWKDWLQFDVHWKHÁXHKDVEHHQFRQQHFWHGWRSUHH[LVWLQJ ÁXHGXFWVWKRURXJKFOHDQLQJ
has been carried out in that residual combustion products may come off during operation of the boiler and
REVWUXFWWKHÁXHGXFW
G 7R HQVXUH FRUUHFW RSHUDWLRQ RI WKH DSSOLDQFH DQG DYRLG LQYDOLGDWLQJ WKH ZDUUDQW\ REVHUYH WKH IROORZLQJ
precautions:
1. Heating circuit
1.1.New system
%HIRUHSURFHHGLQJZLWKLQVWDOODWLRQRIWKHERLOHUWKHV\VWHPPXVWEHFOHDQHGDQGÁXVKHGRXWWKRURXJKO\WR
HOLPLQDWHUHVLGXDOWKUHDGFXWWLQJVZDUIVROGHUDQGVROYHQWVLIDQ\XVLQJVXLWDEOHSURSULHWDU\SURGXFWV
 7RDYRLGGDPDJLQJPHWDOSODVWLFDQGUXEEHUSDUWVXVHRQO\QHXWUDOFOHDQHUVLHQRQDFLGDQGQRQ
alkaline. The recommended products for cleaning are:
 6(17,1(/;RU;DQG)(512;KHDWLQJFLUFXLWUHVWRUH7KHXVHRIWKLVSURGXFWPXVWEHVWULFWO\
in accordance with the maker’s directions. Finally the system must be dosed with a suitable inhibitor at
1% system volume.
1.2. Existing system
%HIRUHSURFHHGLQJZLWKLQVWDOODWLRQRIWKHERLOHUWKHV\VWHPPXVWEHFOHDQHGDQGÁXVKHGRXWWRUHPRYH
VOXGJHDQGFRQWDPLQDQWVXVLQJVXLWDEOHSURSULHWDU\SURGXFWVDVGHVFULEHGLQVHFWLRQ
 7RDYRLGGDPDJLQJPHWDOSODVWLFDQGUXEEHUSDUWVXVHRQO\QHXWUDOFOHDQHUVLHQRQDFLGDQGQRQ
DONDOLQHVXFKXV6(17,1(/;DQG)(512;KHDWLQJFLUFXLWSURWHFWLYH7RXVHWKLVSURGXFWSURFHHG
strictly in accordance with the maker’s directions. Dose with inhibitor.
 5HPHPEHUWKDWWKHSUHVHQFHRIIRUHLJQPDWWHULQWKHKHDWLQJV\VWHPFDQDGYHUVHO\DIIHFWWKHRSHUDWLRQ
of the boiler (e.g. overheating and noisy operation of the heat exchanger).
Failure to observe the above will render the warranty null and void.
1. INSTRUCTIONS PRIOR TO INSTALLATION
,QLWLDOOLJKWLQJRIWKHERLOHUPXVWEHFDUULHGRXWE\DTXDOLÀHGVHUYLFHHQJLQHHU(QVXUHWKHIROORZLQJRSHUDWLRQV
are carried out:
DFRPSOLDQFHRIERLOHUSDUDPHWHUVZLWKHOHFWULFLW\ZDWHUJDVVXSSO\V\VWHPVVHWWLQJV
b) compliance of installation with the standards and regulations in force.
c) appropriate connection to the power supply and earthing of the appliance.
Failure to observe the above will render the warranty null and void.
2. INSTRUCTIONS PRIOR TO COMMISSIONING

57115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
KEYS DISPLAY SYMBOLS
Central heating mode setting key
Data display reset key
Parameter setting key (increase value)
Parameter setting key (decrease value)
Program access and scroll key
Program access and scroll keys
5HVHWNH\
Domestic hot water temperature setting key
Central heating water temperature setting key
Domestic hot water on/off key
5HVHWWDEOHDODUPZDUQLQJ
MAIN display
SECONDARY display
Flame present (on)
2XWGRRUWHPSHUDWXUH
Standby (off)
2SHUDWLRQ LQ PDQXDO PRGH DW PLQLPXP WHP-
perature
2SHUDWLRQ LQ PDQXDO PRGH DW WKH PD[LPXP
temperature set
2SHUDWLRQLQDXWRPDWLFPRGH
2SHUDWLRQLQFHQWUDOKHDWLQJPRGH
2SHUDWLRQLQGRPHVWLFKRWZDWHUPRGH
020503_1100
Figure 1
IMPORTANT: Domestic Hot Water (D.H.W.) instructions discribed here, are to be taken into account only
if the boiler is connected to a D.H.W. production system.
To correctly light the burner proceed as follows:
3URYLGHSRZHUVXSSO\WRWKHERLOHU
2SHQWKHJDVFRFN
3) Follow the directions given below regarding the adjustments to be made at the boiler control panel.
3. COMMISSIONING OF THE BOILER

67115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
020503_0800
Figure 2
 Automatic operation2SHUDWLRQRIWKHERLOHULVFRQWUROOHGE\WKHWLPHGSURJUDPDVGHVFULEHG
LQSRLQW´'DLO\WLPHGSURJUDPIRURSHUDWLRQRIWKHFHQWUDOKHDWLQJV\VWHPµ
 Manualoperationatthe maximumtemperature set. Theboilercomesintooperationregardless
of the timed program set. The operating temperature is that set using the key (point 3-3:
´6HWWLQJWKHPD[LPXPFHQWUDOKHDWLQJWHPSHUDWXUHµ
 Manual operation at minimum temperature. The operating temperature is that set in point
3-6: “setting the minimum central heating temperature”.
 Standby.7KHERLOHUGRHVQRWZRUNLQFHQWUDOKHDWLQJPRGHDOWKRXJKWKHDQWLIUHH]HIXQFWLRQLV
still enabled.
(1) Domestic hot water on/off key7KLVNH\FDQEHSUHVVHGWRDFWLYDWHRUGHDFWLYDWHWKLVIXQFWLRQ
ZKLFKLVLGHQWLÀHGRQWKHGLVSOD\E\DEODFNFXUVRUOLQHXQGHUWKHV\PERO .
(4) Reset key,QFDVHRIDIDXOWUHIHUUHGWRLQSRLQW´)DXOWVDQGUHVHWWLQJWKHERLOHUµWKHERLOHUFDQ
be restarted by pressing this key for at least two seconds (see 3-8).
 ,IWKLVNH\LVSUHVVHGZLWKQRIDXOWSUHVHQWWKHGLVSOD\ZLOOVKRZWKHPHVVDJH´(µDQGWKHVDPHNH\
has to be pressed again (for at least two seconds) to restart the boiler.
(9) Data key. This key can be pressed repeatedly to display the following information:
- Temperature (°C) of the domestic hot water ( 
- outdoor temperature (°C) ( RQO\SURYLGHGZLWKWKHRXWGRRUWHPSHUDWXUHVHQVRUSUREHFRQQHFWHG
Press either of the keys to return to the main menu.
Dash
“Automatic mode”
active
(2) Central heating water temperature setting key. This key can be pressed to set the central heating
water output temperature as described in point 3-3.
(3) Domestic hot water temperature setting key. This key can be pressed to set the domestic hot
water temperature as described in point 3-4.
(10) Central heating mode operating key
.
The
NH\FDQEHSUHVVHGWRDFWLYDWHIRXUERLOHUFHQWUDOKHDWLQJRSHUDWLQJPRGHVWKHVHPRGHVDUH
LGHQWLÀHGE\DEODFNFXUVRUOLQHXQGHUQHDWKWKHUHODWLYHV\PERORQWKHGLVSOD\DQGDUHDVIROORZV
3.1 DESCRIPTION OF KEYS

77115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
Press either of the NH\VWRDFFHVVWKHSURJUDPPLQJIXQFWLRQ
 WKHGLVSOD\ZLOOVKRZWKHOHWWHU3IROORZHGE\DQXPEHUSURJUDPOLQH
Press the NH\VXQWLOWKHGLVSOD\VKRZV3UHIHUULQJWRWKHWLPHWREHVHW
Press the NH\VWRVHWWKHWLPHRQWKHGLVSOD\WKHOHWWHU3ZLOOVWDUWWRÁDVK
Press the NH\WRVDYHDQGH[LWWKHSURJUDPPLQJIXQFWLRQ
020503_0700
Figure 3
3.2 SETTING THE TIME
- Press the NH\ÀJXUHWRVHWWKHFHQWUDOKHDWLQJZDWHUWHPSHUDWXUH
- Press the NH\VWRVHWWKHWHPSHUDWXUHUHTXLUHG
- Press either of the NH\VRUÀJXUHWRVDYHDQGUHWXUQWRWKHPDLQPHQX
N.B²:LWKWKHRXWGRRUVHQVRUFRQQHFWHGWKH NH\ÀJXUHFDQEHXVHGWRVKLIWWKHFHQWUDOKHDWLQJFXUYH
Press the keys to decrease or increase the room temperature in the premises to be heated.
3.3 SETTING THE MAXIMUM CENTRAL HEATING TEMPERATURE
- Press the NH\ÀJXUHWRVHWWKHPD[LPXPGRPHVWLFKRWZDWHUWHPSHUDWXUH
- Press the NH\VWRVHWWKHWHPSHUDWXUHUHTXLUHG
- Press either of the NH\VRUÀJXUHWRVDYHDQGUHWXUQWRWKHPDLQPHQX
3.4 SETTING THE MAXIMUM DOMESTIC HOT WATER TEMPERATURE

87115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
- Press either of the NH\VWRDFFHVVWKHSURJUDPPLQJIXQFWLRQ
a)SUHVVWKHVHNH\VXQWLOWKHGLVSOD\VKRZV3UHIHUULQJWRWKHSURJUDPVWDUWWLPH
b) press the NH\VWRVHWWKHWLPH
- Press the NH\WKHGLVSOD\ZLOOVKRZ3UHIHUULQJWRWKHSURJUDPHQGWLPH
- 5HSHDWWKHRSHUDWLRQVGHVFULEHGLQSRLQWVDDQGEXQWLOWKHWKLUGDQGODVWF\FOHLVUHDFKHGSURJUDPOLQH
3
-Press the key to save and exit from the programming function.
3.5 SETTING THE DAILY PROGRAM FOR OPERATION IN CENTRAL HEATING AND DOMESTIC HOT WATER MODES
3.5.1 Setting the daily times for central heating mode operation
3.5.2 Setting the daily times for domestic hot water mode operation
- )DFWRU\VHWWLQJRI'+:IXQFWLRQLVHQDEOH21ZKLOHLVGLVDEOHG'+:GDLO\WLPHVSURJUDP7RHQDEOH
D.H.W. daily times program see section 14 (parameter H91).
Setting the daily times for domestic hot water mode operation-Carry out the operations described in section
3.5.1 for program lines 31 to 36.
3.6 SETTING THE MINIMUM CENTRAL HEATING TEMPERATURE
- Press either of the NH\VWRDFFHVVWKHSURJUDPPLQJIXQFWLRQ
-  3UHVVWKHVHNH\VXQWLOWKHGLVSOD\VKRZV3UHIHUULQJWRWKHWHPSHUDWXUHWREHVHW
- Press the keys to set the temperature required.
This operating mode is enabled when minimum temperature central heating mode “ ” is activated or when
the daily central heating program does not require heat.
N.B – With the outdoor sensor connected, parameter P5 can be used to set the minimum room tempe-
rature in the premises to be heated (night set-back).

97115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
Range
0…23:59
25..80
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
00:00…24:00
0...1
Factory
setting
———-
25
6:00
22:00
0:00
0:00
0:00
0:00
0:00
24:00
0:00
0:00
0:00
0:00
0
Parameter description
Time of day setting
Minimum central heating temperature setting (°C)
6WDUWRIÀUVWGDLO\SHULRGRIDXWRPDWLFFHQWUDOKHDWLQJ
(QGRIÀUVWGDLO\SHULRGRIDXWRPDWLFFHQWUDOKHDWLQJ
Start of second daily period of automatic central heating
(QGRIVHFRQGGDLO\SHULRGRIDXWRPDWLFFHQWUDOKHDWLQJ
Start of third daily period of automatic heating
(QGRIWKLUGGDLO\SHULRGRIDXWRPDWLFFHQWUDOKHDWLQJ
6WDUWRIÀUVWGDLO\SHULRGRIGRPHVWLFKRWZDWHUSURGXFWLRQ
(QGRIÀUVWGDLO\SHULRGRIGRPHVWLFKRWZDWHUSURGXFWLRQ
Start of second daily period of domestic hot water production
(QGRIVHFRQGGDLO\SHULRGRIGRPHVWLFKRWZDWHUSURGXFWLRQ
Start of third daily period of domestic hot water production
)LQH(QGRIWKLUGGDLO\SHULRGRIGRPHVWLFKRWZDWHUSURGXFWLRQ
5HVHWRIGDLO\FHQWUDOKHDWLQJDQGGRPHVWLFKRWZDWHUSURGXFWLRQSURJUDPVIDFWRU\VHWWLQJV
3UHVVWKH   NH\V WRJHWKHUIRUDERXW  VHFRQGVWKH QXPEHU  DSSHDUVRQ WKH GLVSOD\
&RQÀUPE\SUHVVLQJHLWKHURIWKH keys
Parameter
N.
P1
P5
P11
P12
P13
P14
P15
P16
*P31
*P32
*P33
*P34
*P35
*P36
P45
*Parameters for program lines P31 to P36 are displayed only if Domestic Hot Water (D.H.W.) program (pa-
rameter H91 see section 14) is activated.
3.7 TABLE FOR USER-SETTABLE PARAMETERS

10 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
,IDIDXOWRFFXUVDÁDVKLQJZDUQLQJFRGHDSSHDUVRQWKHGLVSOD\
7KHIDXOWZDUQLQJVDSSHDURQWKHPDLQGLVSOD\ÀJXUH a) together with the symbol (Figure 4).
7RUHVHWSUHVVWKHUHVHW button for at least two seconds.
020503_0500
Figure 4
020503_0600
Figure 4.1
)DXOWZDUQLQJVDSSHDURQWKHVHFRQGDU\GLVSOD\ÀJXUHbDOWHUQDWLQJZLWKWKHWLPHERWKRIWKHPÁDVKLQJ
ÀJXUH,WLVQRWSRVVLEOHWRUHVHWPDOIXQFWLRQZDUQLQJVZKLFKDSSHDURQWKHVHFRQGDU\GLVSOD\DVWKHFDXVH
RIWKHDODUPKDVÀUVWWREHUHPRYHG
3.8 FAULT WARNINGS AND RESETTING THE BOILER

11 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
(*) Auotoreset when fault disappears.
$OOWKHIDXOWVDUHGLVSOD\HGLQRUGHURILPSRUWDQFHLIVHYHUDOIDXOWVRFFXUVLPXOWDQHRXVO\WKHÀUVWWREHGLVSOD\HG
LVWKHRQHZLWKKLJKHVWSULRULW\$IWHUWKHFDXVHRIWKHÀUVWIDXOWKDVEHHQUHPRYHGWKHVHFRQGRQHZLOOEH
GLVSOD\HGDQGVRRQ
,IDQ\JLYHQIDXOWRFFXUVIUHTXHQWO\FRQWDFWWKHDXWKRULVHG6HUYLFH&HQWUH
3.9 TABLE OF FAULTS AND ERROR MESSAGES
Corrective action
Call an authorised service centre (*).
Call an authorised service centre (*).
Call an authorised service centre (*).
6HHSDUDJUDSK´&21752/$1'23(5$7,21'(9,&(6µ
3UHVVWKHUHVHWNH\IRUDERXWVHFRQGVLIWKLVGHYLFHLVWULJJHUHGUHSHDWHGO\FDOO
the authorised service centre)
Call an authorised service centre.
Call an authorised service centre.
Call an authorised service centre to check the gas pressure.
3UHVVWKHUHVHWNH\IRUDERXW VHFRQGV LIWKH IDXOWSHUVLVWV FDOOWKH DXWKRULVHG
VHUYLFHFHQWUHWRFKHFNSRODULW\RILJQLWLRQHOHFWURGHVLRQLVDWLRQFXUUHQW
If  V\PERO LV GLVSOD\HG SUHVV WKH UHVHW button otherwise switch off the
HOHFWULFLW\VXSSO\WR WKHERLOHU IRUDWOHDVWVHFRQGVLIWKH IDXOWSHUVLVWV FDOOWKH
authorised service centre.
&KHFNWKHSRVLWLRQLQJRIWKHLJQLWLRQDQGÁDPHVHQVLQJHOHFWURGHVHHVHFWLRQ
Press the key again (about 2 seconds)
Press and hold reset button (2 seconds approx.) then press again when warning
(DSSHDUV
Call an authorised service centre.
&KHFNWKDWWKHV\VWHPLVDWWKHUDWHGSUHVVXUH5HIHUWRWKHVHFWLRQRQÀOOLQJWKH
V\VWHP,IWKHIDXOWSHUVLVWVFDOOWKHDXWKRULVHGVHUYLFHFHQWUH
Description of fault
2XWGRRUWHPSHUDWXUHVHQVRUIDXOW
17& output sensor failure
Hot water 17& sensor failure
Safety / fumes thermostat / thermal
IXVH  H[FKDQJHU ÁDQJH WKHUPRVWDW
tripped
/RVV RI ÁDPH GXULQJ RSHUDWLRQ WKH
LRQL]DWLRQ FXUUHQW KDV IDOOHQ EHORZ
the limit)
Minimum fan speed limit not reached
Gaspressureswitchtripped/ external
thermostat tripped
1RÁDPHGHWHFWHG
Boiler circuit board error
The reset key has been pressed
inappropriately
Internal error on boiler circuit module
Fan speed threshold not reached
/RZZDWHUSUHVVXUH
Error
code
(
(
(
(
(
(
(
(
(
(
(
(
(

12 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE USER
To shut down the boiler switch off the electrical supply to the appliance.
IMPORTANT:5HJXODUO\FKHFNWKDWWKHSUHVVXUHGLVSOD\HGE\WKHSUHVVXUHJDXJHLV¸EDUZKHQWKHFHQWUDO
KHDWLQJV\VWHPLVFROG2SHQWKHERLOHUGUDLQFRFNWRUHGXFHSUHVVXUHLILWLVWRRKLJK2SHQWKHÀOOLQJFRFNWR
increase pressure if it is too low.
$OZD\VRSHQWKHÀOOLQJFRFNYHU\VORZO\WRDOORZDQ\DLUWREOHHGRII
,IWKHSUHVVXUHLQWKHV\VWHPGURSVIUHTXHQWO\FRQWDFWDQDXWKRULVHGVHUYLFHFHQWUHWRKDYHWKHV\VWHPFKHFNHG
We recommend you avoid draining the whole system as raw water makeup will lead to harmful limestone de-
posits inside the boiler and on the heating elements.
In case the boiler is not operated during wintertime and is therefore exposed to danger of frost we suggest you
DGGVRPHVSHFLÀFSXUSRVHDQWLIUHH]HWRWKHZDWHUFRQWDLQHGLQWKHV\VWHPHJSURS\OHQHJO\FROHFRXSOHG
with corrosion and scaling inhibitors).
The electronic management of the boilers includes a “frost protection” function in the central heating system
ZKLFKRSHUDWHVWKHEXUQHUWRUHDFKDKHDWLQJÁRZWHPSHUDWXUHRI&ZKHQWKHV\VWHPKHDWLQJÁRZWHPSH-
rature drops below 5°C.
The frost protection function is enabled if:
HOHFWULFDOVXSSO\WRWKHERLOHULVRQ
WKHJDVVHUYLFHFRFNLVRSHQ
WKHV\VWHPSUHVVXUHLVDVUHTXLUHG
* the boiler is not isolated.
7RPDLQWDLQHIÀFLHQWDQGVDIHRSHUDWLRQRI\RXUERLOHUKDYHLWFKHFNHGE\D4XDOLÀHG6HUYLFH(QJLQHHUDWWKH
end of every heating season.
Careful servicing will ensure economical operation of the system.
'RQRWFOHDQWKHRXWHUFDVLQJRIWKH DSSOLDQFHZLWKDEUDVLYHDJJUHVVLYHDQGRUHDVLO\ÁDPPDEOH FOHDQHUV
LHJDVROLQHDOFRKRODQGVRRQ$OZD\VLVRODWHWKHHOHFWULFDOVXSSO\WRWKHDSSOLDQFHEHIRUHFOHDQLQJLWVHH
section 5 Turning off the boiler).
These boilers are produced for natural gas and can be converted to work with LPG (G 31).
Any gas change must be effected by a Qualified Service Engineer.
4. FILLING THE SYSTEM
5. SWITCHING THE BOILER OFF
6. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION
7. SERVICING INSTRUCTIONS AND GAS CHANGE

13 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler
must be connected to a central heating system and/or to a domestic hot water supply system in compliance
with its performances and output power.
IMPORTANT! The following components are not installed in the boiler as supplied. It is the installer’s
responsibility to provide them:
 ([SDQVLRQYHVVHO
 3UHVVXUHVDIHW\YDOYH
 &LUFXODWLRQSXPS
 )LOOLQJV\VWHPFRFN
Before connecting the boiler ensure the following operations have been completed:
D&KHFNWKDWWKHERLOHULVÀWIRURSHUDWLRQZLWKWKHW\SHRIJDVDYDLODEOH)RUPRUHGHWDLOVVHHWKHQRWLFHRQWKH
packaging and the label on the appliance itself.
E&KHFNWKDWWKHÁXHWHUPLQDOGUDIWLVDSSURSULDWHWKDWWKHWHUPLQDOLVQRWREVWUXFWHGDQGWKDWQRRWKHUDSSOLDQ-
FHH[KDXVWJDVHVDUHH[SHOOHGWKURXJKWKHVDPHÁXHGXFWXQOHVVWKHÁXHLVHVSHFLDOO\GHVLJQHGWRFROOHFW
WKHH[KDXVWJDVFRPLQJIURPPRUHWKDQRQHDSSOLDQFHLQFRQIRUPLW\ZLWKWKHVWDQGDUGVDQGUHJXODWLRQVLQ
force.
F&KHFNWKDWLQFDVHWKHÁXHKDVEHHQFRQQHFWHGWRSUHH[LVWLQJÁXHGXFWVWKRURXJKFOHDQLQJKDVEHHQFDUULHG
RXWLQWKDWUHVLGXDOFRPEXVWLRQSURGXFWVPD\FRPHRIIGXULQJRSHUDWLRQRIWKHERLOHUDQGREVWUXFWWKHÁXH
duct.
7KHIROORZLQJUHPDUNVDQGLQVWUXFWLRQVDUHDGGUHVVHGWR6HUYLFH(QJLQHHUVWRKHOSWKHPFDUU\RXWDIDXOWOHVV
installation. Instructions regarding lighting and operation of the boiler are contained in the ‘Instructions pertai-
ning to the user’ section.
1RWHWKDW LQVWDOODWLRQ PDLQWHQDQFH DQGRSHUDWLRQ RI WKH JDVDSSOLDQFHVPXVW EH SHUIRUPHGH[FOXVLYHO\ E\
TXDOLÀHGSHUVRQQHOLQFRPSOLDQFHZLWKFXUUHQWVWDQGDUGV
Please note the following:
 ,QVWDOOWKHERLOHULQDSHUPDQHQWYHQWLODWHGFHQWUDOKHDWLQJERLOHUURRP
 7KLVERLOHUFDQEHFRQQHFWHGWRDQ\W\SHRIFRQYHFWRUSODWHVUDGLDWRUVWKHUPRFRQYHFWRUV'HVLJQWKHV\VWHP
VHFWLRQVDVXVXDOWKRXJKWDNLQJLQWRDFFRXQWWKHDYDLODEOHRXWSXWSXPSKHDGSHUIRUPDQFHVDVVKRZQLQ
chapter 10.4.
 'RQRWOHDYHDQ\SDFNDJLQJFRPSRQHQWVSODVWLFEDJVSRO\VW\UHQHHWFZLWKLQFKLOGUHQҋVUHDFKDVWKH\DUH
a potential source of danger.
 ,QLWLDOOLJKWLQJRIWKHERLOHUPXVWEHHIIHFWHGE\D4XDOLÀHG6HUYLFH(QJLQHHU
 0DNHVXUHWKDWWKHURRPZKHUHWKHERLOHULVLQVWDOOHGKDVDVXIÀFLHQWVXSSO\RIDLUWRHQVXUHFRPSOHWHFRPEX-
stionofthe gasconsumedby theappliance.Install unblockableventilationgrilles asnecessaryin accordance
ZLWKWKH5XOHVLQIRUFH
 &RQQHFWWKHERLOHUGLUHFWO\WRDQHIÀFLHQWÁXHWRYHQWDOOIXPHVDQGFRPEXVWLRQJDVHVRXWGRRUV0DNHVXUH
WKDWWKHSLSHFRQQHFWLQJWKHERLOHUWRWKHÁXHLVQRWVPDOOHULQGLDPHWHUWKDQWKHERLOHUҋVÁXHRXWOHW0DNH
VXUHWKDWWKHÁXHLVLQJRRGFRQGLWLRQDQGIUHHIURPKROHVRUFUDFNVWKDWFRXOGUHGXFHGUDZ
Failure to observe the above will render the warranty null and void.
8. GENERAL INFORMATION
9. INSTRUCTIONS PRIOR TO INSTALLATION

14 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
10. BOILER INSTALLATION AND DIMENSIONS
Install the boiler in a position that ensures easy maintenance. You must be able to fully open the front access
door and have adequate access to the rear of the boiler.
,ISRVVLEOHLQVWDOOWKHERLOHURQDUDLVHGEDVHRIPPLQKHLJKWWRIDFLOLWDWHGUDLQDJHRIÁXHFRQGHQVDWH
:KHQFDOFXODWLQJWKHZHLJKWRIWKHERLOHURQWKHÁRRUEHDULQPLQGWKHZHLJKWRIWKHZDWHULQWKHKHDWH[FKDQJHU
(see table 1).
$GMXVWWKHOHYHOOLQJIHHWWRFRPSHQVDWHIRUDQ\XQHYHQQHVVLQWKHÁRRU
Install the necessary utility connections starting from the water and gas connections on the rear of the boiler
VHHWDEOHIRUÀWWLQJW\SHDQGVL]H
These appliances do not have any circulation pump, expansion tank or safety valve. These devices
must therefore be provided elsewhere in the system, and must be sized to suit the system’s thermal
capacity.
&RQQHFWWKHÁXHFRQGHQVDWHGUDLQSLSHWRDVXLWDEOHZDWHUGUDLQHQVXULQJDQDGHTXDWHVORSH
7RGUDLQWKHERLOHUXVHWKHGUDLQWDSDWWKHUHDU
7R HQVXUH FRUUHFW RSHUDWLRQ RI WKH DSSOLDQFH DQG DYRLG LQYDOLGDWLQJ WKH ZDUUDQW\ REVHUYH WKH IROORZLQJ
precautions:
1. Heating circuit
1.1.New system
%HIRUHSURFHHGLQJZLWKLQVWDOODWLRQRIWKHERLOHUWKHV\VWHPPXVWEHFOHDQHGDQGÁXVKHGRXWWKRURXJKO\WR
HOLPLQDWHUHVLGXDOWKUHDGFXWWLQJVZDUIVROGHUDQGVROYHQWVLIDQ\XVLQJVXLWDEOHSURSULHWDU\SURGXFWV
 7RDYRLGGDPDJLQJPHWDOSODVWLFDQGUXEEHUSDUWVXVHRQO\QHXWUDOFOHDQHUVLHQRQDFLGDQGQRQ
alkaline. The recommended products for cleaning are:
 6(17,1(/;RU;DQG)(512;KHDWLQJFLUFXLWUHVWRUH7KHXVHRIWKLVSURGXFWPXVWEHVWULFWO\
in accordance with the maker’s directions. Finally the system must be dosed with a suitable inhibitor at
1% system volume.
1.2. Existing system
%HIRUHSURFHHGLQJZLWKLQVWDOODWLRQRIWKHERLOHUWKHV\VWHPPXVWEHFOHDQHGDQGÁXVKHGRXWWRUHPRYH
VOXGJHDQGFRQWDPLQDQWVXVLQJVXLWDEOHSURSULHWDU\SURGXFWVDVGHVFULEHGLQVHFWLRQ
 7RDYRLGGDPDJLQJPHWDOSODVWLFDQGUXEEHUSDUWVXVHRQO\QHXWUDOFOHDQHUVLHQRQDFLGDQGQRQ
DONDOLQHVXFKXV6(17,1(/;DQG)(512;KHDWLQJFLUFXLWSURWHFWLYH7RXVHWKLVSURGXFWSURFHHGLQJ
strictly in accordance with the maker’s directions.
 5HPHPEHUWKDWWKHSUHVHQFHRIIRUHLJQPDWWHULQWKHKHDWLQJV\VWHPFDQDGYHUVHO\DIIHFWWKHRSHUDWLRQ
of the boiler (e.g. overheating and noisy operation of the heat exchanger). Dose with inhibitor.
Failure to observe the above will render the warranty null and void.

15 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Figure 5
Table 1
Model Depth Height Widht Gas Fitting Fitting Water contents
(mm) (mm) (mm) ÀWWLQJ F R ( l )
A(CH) (CH)
FS 50 621 850 450 G
3/4” G 1’’ G 1’’ 5,1
FS 70 693 850 450 G
3/4” G 1’’ G 1’’ 6,5
05 KHDWLQJÁRZ
RR: heating return
GAS: gas inlet to the boiler
SC: condensate drain
Insert the flue-gas union
and fasten the connector
to the flue-gas thermo-
stat
CT_0804 / 0906_3005

16 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Figure 6
CT_0664 / 0906_2202
10.1 HYDRAULIC SYSTEM 1
(Pumped heating circuits with remote control QAA73 or Room Thermostat, including hot-water tank,
with primary loop)
Applications and Installation Details
- TS: Tank Sensor (QAZ36)*
- B3: Room Control Module (QAA73)*
- B1: Room Thermostat*
- B9: Outdoor Temperature Sensor (QAC34) supplied with the boiler
- P1: Heating Pump
- PDHW: Hot Water Pump
- PLP: Primary Pump
(*) Available Optional Extra
- Pumps, Hot Water Cylinder, Low Loss Header , Non return valve (Not supplied)
- Installer Wiring ---------------
Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 12):
WITH QAA73 WITH
REMOTE CONTROL ROOM THERMOSTAT
APPLICATION
TERMINAL BOARD TERMINAL BOARD
PRIMARY PUMP PLP M1: A – B M1: A – B
DHW PUMP PDHW M3: 13 – 14 M3: 13 – 14
HEATING PUMP P1 M3: 11 – 12 M3: 11 – 12
DHW SENSOR TS M2: 7 – 8 M2: 7 – 8
REMOTE CONTROL QAA73 M2: 1 – 2 NO
ROOM THERMOSTAT M2: 3 – 4 OPEN M2: 3 – 4

17 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Parameter changes requires (see also section 14):
PCB Description Setting Parameter
PARAMETER
H552 Hydraulic system H552 = 2 (*)
 + .RQÀJ+.6 + 
 + .RQÀJ$XVJDQJ + 
H632 WANFO Q8 H632 = 00001100 (*)
(*) factory set
10.2 HYDRAULIC SYSTEM 2
(Pumped heating circuits with Room Thermostats and compensated circuit with remote control QAA73,
including hot-water tank, with primary loop)
Applications and Installation Details
- TS:Tank Sensor (QAZ36)*
- B3: Room Control Module (QAA73)*
- B1: Room Thermostat*
- B9: Outdoor Temp Sensor (QAC34) supplied with the boiler
- AGU2.500: Zone controller (Clip-in AGU2.500)*
- FS: Flow Sensor (QAD36: supplied with the AGU2.500)*
- P1: CTC Heating Pump
- P DHW: Hot Water pump
- PLP: Primary Pump
- 3WV: 3-Way Valve (power open / power close)
- P2: VTC Pump
(*) Available Optional Extra
- Pumps , Hot Water Cylinder, Low Loss Header, Non return valve (Not supplied)
- Installer Wiring --------------
Figure 7
CT_0663 / 0906_2203

18 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 12):
APPLICATION
TERMINAL BOARD
PRIMARY PUMP PLP M1: A – B
DHW PUMP PDHW M3: 13 – 14
HEATING PUMP P1 M3: 11 – 12
DHW SENSOR SB M2: 7 – 8
REMOTE CONTROL QAA73 (LOW TEMPERATURE) M2: 1 – 2
ROOM THERMOSTAT M2: 3 – 4
HEATING PUMP P2 CLIP IN AGU 2.500
3 WAY VALVE 3WV CLIP IN AGU 2.500
FLOW SENSOR FS CLIP IN AGU 2.500
Parameter changes requires (see also section 14) :
PCB PARAMETER Description Setting Parameter
H552 Hydraulic system H552 = 50
 + .RQÀJ+.6 + 
 + .RQÀJ$XVJDQJ + 
H632 WANFO Q8 00001111
10.3 HYDRAULIC SYSTEM 3
(Cascade with pumped heating circuits, Room Thermostats, primary loop)
Applications and Installation Details
- RT: Room Thermostat*
- B9: Outdoor Temperature Sensor (QAC34) supplied with the boiler
- OCI 420: Cascade interface controller (Clip-in OCI 420)*
- RVA 47: Cascade controller (RVA 47)*
- FS: Flow/return Sensor (QAD21)*
- P1: Heating Pump
- PLP: Primary Pump
(*) Available Optional Extra
- Pumps , Hot Water Cylinder, Low Loss Header, Non return valve (Not supplied)
- Installer Wiring --------------

19 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Figure 8
CT_0665 / 0906_2204
Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 12):
APPLICATION
TERMINAL BOARD
PRIMARY PUMP PLP M1: A – B
HEATING PUMP P1 RVA 47
ROOM THERMOSTAT RVA 47
FLOW/ RETURN SENSOR QAD 21 RVA 47
Parameter changes requires (see also section 14) :
PCB PARAMETER Description Setting Parameter
H552 Hydraulic system H552 = 80
 + .RQÀJ+.6 + 
 + .RQÀJ$XVJDQJ + 
H632 WANFO Q8 00001111
If DHW circuit is required then DHW pump and DHW sensor have to be connected to terminal of RVA 47
Cascade Controller.
For more details refer to the instruction provided with the accessories RVA 47 and RVA 46 (compensated
circuit).

20 7115344.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
10.4 EXCHANGERS PRESSURE DROP
FS 50 - 70
EXCHANGER
PRESSURE DROP.
kPa Lit/sec kPa Lit/sec kPa Lit/sec kPa Lit/sec
FS 50 50 0,97 32 0,71 25 0,53 10 0,35
FS 70 60 1,41 35 1,03 20 0,77 11 0,51
Boiler Hydraulic Resistance and Water Flow Rates
11°K ΔT 15°K ΔT 20°K ΔT 30°K ΔT
FS 50 0,27
FS 70 0,33
Boiler Minimum Water Flow Rates
Lit/sec
Exchangers pressure drop (mH2O)
WATER FLOW RATE (l/h)
Graph 1
0712_0903