October 2010 To be kept by the user

Sirius FS

90-105-130-160

Floor Standing Condensing Gas Boilers

Installation, Operation & Maintenance Manual

Working towards a cleaner future

heating specialists

Dear Customer,

We are sure your new boiler will comply with all your requirements.

Do not dispose of this booklet. This manual contains the information, which will help you to run your boiler correctly and efficiently.

Do not leave any parts of the packaging (plastic bags, polystyrene, etc.) within children’s reach as they are a potential source of danger.

potterton coMMercIaL boilers bear the CE mark in compliance with the basic requirements as laid down in the following Directives:

- Gas Directive 90/396/EEC

- Efficiency Directive 92/42/EEC

- Electromagnetic Compatibility Directive 2004/108/EEC

- Low Voltage Directive 2006/95/EC

ATTENTION

This boiler can only be installed and operate in permanently, ventilated rooms in accordance with

BS6644

InstructIons pertaInInG to the user

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912.823.1 - GB

contents

instructions pertaining to the user

1. Instructions prior to installation

2. Instructions prior to commissioning

3. Commissioning of the boiler

4. Filling the boiler

5. Switching the boiler off

6. Prolonged standstill of the system. Frost protection

7. Servicing instructions and gas change

12

12

12

5

12

4

4

instructions pertaining to the installer

8. General information

9. Instructions prior to installation

10. Boiler installation and dimensions

11. Chimney flue connection

12. Connecting the mains supply

13. Adjusting the gas valves and gas change

14. Setting the boiler parameters

15. Control and operation devices

16. Positioning of the ignition and flame sensing electrode

17. Check of combustion parameters

18. Activating the chimney-sweep function

19. Annual service

20. Boiler schematic

21. Illustrated wiring diagram

22. Technical data

37

38-39

40

35

35

36

36

23

29

33

34

13

13

14

21

InstructIons pertaInInG to the user

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912.823.1 - GB

1. instructions prior to installation

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.

The boiler must be installed by a Qualified Service Engineer and ensure the following operations are carried out: a) Check that the boiler is fit for operation with the type of gas available. For more details see the notice on the packaging and the label on the appliance itself.

b) Careful checking that the flue terminal draft is appropriate; that the terminal is not obstructed and that no other appliance exhaust gases are expelled through the same flue duct, unless the flue is especially designed to collect the exhaust gas coming from more than one appliance, in conformity with the standards and regulations in force.

c) Careful checking that, in case the flue has been connected to pre-existing flue ducts, thorough cleaning has been carried out in that residual combustion products may come off during operation of the boiler and obstruct the flue duct.

d) To ensure correct operation of the appliance and avoid invalidating the warranty, observe the following precautions:

1. Heating circuit

1.1.

New system

Before proceeding with installation of the boiler, the system must be cleaned and flushed out thoroughly to eliminate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary products.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non alkaline. The recommended products for cleaning are:

SENTINEL X300 or X400 and FERNOX heating circuit restore. The use of this product must be strictly 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

Before proceeding with installation of the boiler, the system must be cleaned and flushed out to remove sludge and contaminants, using suitable proprietary products as described in section 1.1.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-alkaline such us SENTINEL X100 and FERNOX heating circuit protective. To use this product proceed strictly in accordance with the maker’s directions. Dose with inhibitor.

Remember that the presence of foreign matter in the heating system can adversely affect the operation 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 .

2. instructions prior to coMMissioning

Initial lighting of the boiler must be carried out by a qualified service engineer. Ensure the following operations are carried out: a) compliance of boiler parameters with (electricity, water, gas) supply systems settings.

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.

The instructions shall state the substance of the following:

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

InstructIons pertaInInG to the user 912.823.1 - GB

4

3. coMMissioning oF the boiler

To correctly light the burner proceed as follows:

1) Provide power supply to the boiler;

2) Open the gas cock;

3) Follow the directions given below regarding the adjustments to be made at the boiler control panel.

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.

KEYS

Domestic hot water on/off key

Central heating water temperature setting key

Domestic hot water temperature setting key

Reset key

Program access and scroll keys

Program access and scroll key

Parameter setting key (decrease value)

Parameter setting key (increase value)

Data display reset key

Central heating mode setting key

DISPLAY SYMBOLS

Operation in domestic hot water mode

Operation in central heating mode

Operation in automatic mode

Operation in manual mode at the maximum temperature set

Operation in manual mode at minimum temperature

Standby (off)

Outdoor temperature

Flame present (on)

Resettable alarm warning

MAIN display

SECONDARY display

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5

3.1 description oF keys

.

(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 key can be pressed to activate four boiler central heating operating modes; these modes are identified by a black cursor line underneath the relative symbol on the display, and are as follows:

Dash

“Automatic mode” active

Figure 2

•

Automatic operation. Operation of the boiler is controlled by the timed program as described in point 3-5.1 “Daily timed program for operation of the central heating system”;

•

Manual operation at the maximum temperature set. The boiler comes into operation regardless of the timed program set. The operating temperature is that set using the key (point 3-3:

“Setting the maximum central heating temperature”);

•

Manual operation at minimum temperature. The operating temperature is that set in point

3-6: “setting the minimum central heating temperature”.

•

Standby. The boiler does not work in central heating mode, although the antifreeze function is still enabled.

(1) Domestic hot water on/off key: This key can be pressed to activate or deactivate this function, which is identified on the display by a black cursor line under the symbol .

(4) Reset key. In case of a fault, referred to in point 3-7 “Faults and resetting the boiler”, the boiler can be restarted by pressing this key for at least two seconds (see 3-8).

If this key is pressed with no fault present, the display will show the message “E153”, and the same key 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) ( ); only provided with the outdoor temperature sensor probe connected.

Press either of the keys to return to the main menu.

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6

3.2 setting the tiMe

•

Press either of the keys to access the programming function;

the display will show the letter P followed by a number (program line);

Figure 3

•

•

•

Press the

Press the

Press the

keys until the display shows P1, referring to the time to be set;

keys to set the time; on the display, the letter P will start to flash;

key to save and exit the programming function;

3.3 setting the MaxiMuM central heating teMperature

- Press the key (2-figure 1) to set the central heating water temperature;

- Press the keys to set the temperature required;

- Press either of the keys (1 or 10 - figure 1) to save and return to the main menu.

N.B – With the outdoor sensor connected, the key (2 - figure 1) can be used to shift the central heating curve.

Press the keys to decrease or increase the room temperature in the premises to be heated.

3.4 setting the MaxiMuM doMestic hot water teMperature

- Press the key (3-figure 1) to set the maximum domestic hot water temperature;

- Press the keys to set the temperature required;

- Press either of the keys (1 or 10 - figure 1) to save and return to the main menu.

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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

- Press either of the keys to access the programming function;

a) press these keys until the display shows P11, referring to the program start time;

b) press the keys to set the time;

- Press the key; the display will show P12, referring to the program end time;

- Repeat the operations described in points a and b until the third and last cycle is reached (program line

P16);

- Press the key to save and exit from the programming function.

3.5.2 setting the daily times for domestic hot water mode operation

- Factory setting of D.H.W. function is enable (ON) while is disabled D.H.W. daily times program. To enable

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 keys to access the programming function;

- Press these keys until the display shows P5, referring to the temperature to be set;

- 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).

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3.7 table For user-settable paraMeters

P16

* P31

* P32

* P33

* P34

* P35

* P36

P45

Parameter

N.

Parameter description

P1

P5

P11

P12

Time of day setting

Minimum central heating temperature setting (°C)

Start of first daily period of automatic central heating

End of first daily period of automatic central heating

P13

P14

P15

Start of second daily period of automatic central heating

End of second daily period of automatic central heating

Start of third daily period of automatic heating

End of third daily period of automatic central heating

Start of first daily period of domestic hot water production

End of first daily period of domestic hot water production

Start of second daily period of domestic hot water production

End of second daily period of domestic hot water production

Start of third daily period of domestic hot water production

Fine End of third daily period of domestic hot water production

Reset of daily central heating and domestic hot water production programs (factory settings).

Press the - + keys together for about 3 seconds; the number 1 appears on the display.

Confirm by pressing either of the keys

0:00

0:00

0:00

0:00

0:00

24:00

0:00

Factory setting

———-

25

6:00

22:00

0:00

0:00

0:00

0

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

*

Parameters for program lines P31 to P36 are displayed only if

Domestic Hot Water (D.H.W.) program (pa-

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912.823.1 - GB

3.8 Fault warnings and resetting the boiler

If a fault occurs, a flashing warning code appears on the display.

The fault warnings appear on the main display (figure 1 a) together with the symbol (Figure 4).

To reset, press the reset button for at least two seconds.

Figure 4

Fault warnings appear on the secondary display (figure 1 b) alternating with the time, both of them flashing

(figure 4.1). It is not possible to reset malfunction warnings which appear on the secondary display as the cause of the alarm has first to be removed.

Figure 4.1

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912.823.1 - GB

3.9 table oF Faults and error Messages

Error code

E10

E20

E50

E110

E128

E129

E132

E133

E151

E153

E154

E160

Description of fault Corrective action

Outdoor temperature sensor fault

NTC output sensor failure

Hot water NTC sensor failure

Safety or flue gas thermostat tripped

Call an authorised service centre (*).

Call an authorised service centre (*).

Call an authorised service centre (*).

Press the reset key (for about 2 seconds: if this device is triggered repeatedly, call the authorised service centre)

Loss of flame during operation (the ionization current has fallen below the limit)

Call an authorised service centre.

Minimum fan speed limit not reached Call an authorised service centre.

Gas pressure switch tripped / external thermostat tripped

Call an authorised service centre to check the gas pressure.

No flame detected

Boiler circuit board error

Press the reset key (for about 2 seconds); if the fault persists, call the authorised service centre to check polarity of ignition electrodes, ionisation current.

If symbol is displayed, press the reset button otherwise switch off the electricity supply to the boiler for at least 10 seconds; if the fault persists, call the authorised service centre.

Check the positioning of the ignition and flame sensing electrode (see section 16).

The reset key has been pressed inappropriately

Press the key again (about 2 seconds)

Internal error on boiler circuit module Press and hold reset button (2 seconds approx.) then press again when warning

E153 appears

Fan speed threshold not reached Call an authorised service centre.

E164 Low water pressure Check that the system is at the rated pressure. (Refer to the section on filling the system). If the fault persists, call the authorised service centre.

(*) Auotoreset when fault disappears.

All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displayed is the one with highest priority. After the cause of the first fault has been removed, the second one will be displayed, and so on.

If any given fault occurs frequently, contact the authorised Service Centre.

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912.823.1 - GB

4. Filling the systeM

IMPORTANT: Regularly check that the pressure displayed by the pressure gauge is 1 ÷ 4 bar when the central heating system is cold. Open the boiler drain cock to reduce pressure if it is too high. Open the filling cock to increase pressure if it is too low.

Always open the filling cock very slowly to allow any air to bleed off.

If the pressure in the system drops frequently, contact an authorised service centre to have the system checked.

5. switching the boiler oFF

To shut down the boiler switch off the electrical supply to the appliance.

6. prolonged standstill oF the systeM. Frost protection

We recommend you avoid draining the whole system as raw water makeup will lead to harmful limestone deposits 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 add some specific-purpose anti-freeze to the water contained in the system (e.g.: propylene glycole coupled with corrosion and scaling inhibitors).

The electronic management of the boilers includes a “frost protection” function in the central heating system which operates the burner to reach a heating flow temperature of 30° C when the system heating flow temperature drops below 5°C.

The frost protection function is enabled if:

* electrical supply to the boiler is on;

* the gas service cock is open;

* the system pressure is as required;

* the boiler is not isolated.

7. servicing instructions and gas change

To maintain efficient and safe operation of your boiler have it checked by a Qualified Service Engineer at the end of every heating season.

Careful servicing will ensure economical operation of the system.

Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily flammable cleaners

(i.e.: gasoline, alcohol, and so on). Always isolate the electrical supply to the appliance before cleaning it (see 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.

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8. general inForMation

The following remarks and instructions are addressed to Service Engineers to help them carry out a faultless installation. Instructions regarding lighting and operation of the boiler are contained in the ‘Instructions pertaining to the user’ section.

Note that installation, maintenance and operation of the gas appliances must be performed exclusively by qualified personnel in compliance with current standards.

Please note the following:

• Install the boiler in a permanent ventilated central heating boiler room.

• This boiler can be connected to any type of convector plates, radiators, thermoconvectors. Design the system sections as usual though taking into account the available output / pump head performances, as shown in chapter 10.4.

• Do not leave any packaging components (plastic bags, polystyrene, etc.) within children’s reach as they are a potential source of danger.

• Initial lighting of the boiler must be effected by a Qualified Service Engineer.

• Make sure that the room where the boiler is installed has a sufficient supply of air to ensure complete combustion of the gas consumed by the appliance. Install unblockable ventilation grilles as necessary in accordance with the Rules in force.

• Connect the boiler directly to an efficient flue to vent all fumes and combustion gases outdoors. Make sure that the pipe connecting the boiler to the flue is not smaller in diameter than the boiler’s flue outlet. Make sure that the flue is in good condition and free from holes or cracks that could reduce draw.

Failure to observe the above will render the warranty null and void.

9. instructions prior to installation

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:

• Expansion vessel;

• Pressure safety valve;

• Circulation pump;

• Filling system cock.

Before connecting the boiler ensure the following operations have been completed: a) Check that the boiler is fit for operation with the type of gas available. For more details see the notice on the packaging and the label on the appliance itself.

b) Check that the flue terminal draft is appropriate; that the terminal is not obstructed and that no other appliance exhaust gases are expelled through the same flue duct, unless the flue is especially designed to collect the exhaust gas coming from more than one appliance, in conformity with the standards and regulations in force.

c) Check that, in case the flue has been connected to pre-existing flue ducts, thorough cleaning has been carried out in that residual combustion products may come off during operation of the boiler and obstruct the flue duct.

InstructIons pertaInInG to the InstaLLer 912.823.1 - GB

13

To ensure correct operation of the appliance and avoid invalidating the warranty, observe the following precautions:

1. Heating circuit

1.1.

New system

Before proceeding with installation of the boiler, the system must be cleaned and flushed out thoroughly to eliminate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary products.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non alkaline. The recommended products for cleaning are:

SENTINEL X300 or X400 and FERNOX heating circuit restore. The use of this product must be strictly 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

Before proceeding with installation of the boiler, the system must be cleaned and flushed out to remove sludge and contaminants, using suitable proprietary products as described in section 1.1.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and nonalkaline such us SENTINEL X100 and FERNOX heating circuit protective. To use this product proceeding strictly in accordance with the maker’s directions.

Remember that the presence of foreign matter in the heating system can adversely affect the operation 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 .

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.

If possible, install the boiler on a raised base of 200 mm in height to facilitate drainage of flue condensate.

When calculating the weight of the boiler on the floor, bear in mind the weight of the water in the heat exchanger

(see table 1).

Adjust the levelling feet to compensate for any unevenness in the floor.

Install the necessary utility connections starting from the water and gas connections on the rear of the boiler

(see table 1 for fitting type and size).

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.

Connect the flue condensate drain pipe to a suitable water drain, ensuring an adequate slope.

To drain the boiler, use the drain tap at the rear.

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912.823.1 - GB

Insert the flue-gas union and fasten the connector to the flue-gas thermostat

CLEARANCE

FRONT = 700 mm

REAR = allow room to make connections

SIDE = 10 mm

TOP = 500 mm

F CH: heating flow

R CH: heating return

GAS: gas inlet to the boiler

SC: condensate drain

SIZE = EXTERNAL 25 mm

INTERNAL 18 mm

Figure 5

Model

FS 90

FS 105

FS 130

FS 160

Table 1

Depth

(mm)

A

801

871

1024

1132

Height

(mm)

850

850

850

850

Width

(mm)

450

450

450

450

Gas fitting

G 3 /

4

”

G 1”

G 1”

G 1”

Fitting

F

(CH)

G 1 1 /

4

’’

G 1 1 /

2

”

G 1 1 /

2

”

G 1 1 /

2

”

Fitting

R

(CH)

G 1 1 /

4

’’

G 1 1 /

2

”

G 1 1 /

2

”

G 1 1 /

2

”

Water contents

( l )

13,7

21

23,3

25,3

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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

Figure 6

- 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):

APPLICATION

PRIMARY PUMP PLP

DHW PUMP PDHW

HEATING PUMP P1

DHW SENSOR TS

REMOTE CONTROL QAA73

ROOM THERMOSTAT

WITH QAA73

REMOTE CONTROL

TERMINAL BOARD

M1: A – B

M3: 13 – 14

M3: 11 – 12

M2: 7 – 8

M2: 1 – 2

M2: 3 – 4 OPEN

WITH

ROOM THERMOSTAT

TERMINAL BOARD

M1: A – B

M3: 13 – 14

M3: 11 – 12

M2: 7 – 8

NO

M2: 3 – 4

InstructIons pertaInInG to the InstaLLer 912.823.1 - GB

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Parameter changes requires (see also section 14):

PCB

PARAMETER

H552

H553

H615

H632

Description

Hydraulic system

KonfigHKS

KonfigAusgang

WANFO Q8

Setting Parameter

H552 = 2 (*)

H553 = 21 (*)

H615 = 9 (*)

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

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912.823.1 - GB

Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 12):

APPLICATION

PRIMARY PUMP PLP

DHW PUMP PDHW

HEATING PUMP P1

DHW SENSOR SB

REMOTE CONTROL QAA73 (LOW TEMPERATURE)

ROOM THERMOSTAT

HEATING PUMP P2

3 WAY VALVE 3WV

FLOW SENSOR FS

TERMINAL BOARD

M1: A – B

M3: 13 – 14

M3: 11 – 12

M2: 7 – 8

M2: 1 – 2

M2: 3 – 4

CLIP IN AGU 2.500

CLIP IN AGU 2.500

CLIP IN AGU 2.500

Parameter changes requires (see also section 14):

PCB PARAMETER

H552

H553

H615

H632

Description

Hydraulic system

KonfigHKS

KonfigAusgang

WANFO Q8

Setting Parameter

H552 = 50

H553 = 12

H615 = 9

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 --------------

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912.823.1 - GB

Figure 8

Applications (pumps, sensor, remote control ...) have to be connected to terminal as follows (see also section 12):

APPLICATION

PRIMARY PUMP PLP

HEATING PUMP P1

ROOM THERMOSTAT

FLOW/ RETURN SENSOR QAD 21

Parameter changes requires (see also section 14):

TERMINAL BOARD

M1: A – B

RVA 47

RVA 47

RVA 47

PCB PARAMETER

H552

H553

H615

H632

Description

Hydraulic system

KonfigHKS

KonfigAusgang

WANFO Q8

Setting Parameter

H552 = 80

H553 = 21

H615 = 9

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).

InstructIons pertaInInG to the InstaLLer 912.823.1 - GB

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Graph 1

10.4 exchangers pressure drop

90

105

FS 90 - 105

EXCHANGER

PRESSURE DROP.

WATER FLOW RATE (l/h)

160

130

FS 130 - 160

EXCHANGER

PRESSURE DROP.

Graph 1.1

WATER FLOW RATE (l/h)

Boiler

Fs 90

Fs 105

Fs 130

Fs 160 kpa

11°K ∆t

Lit/sec

76,49 1,85

74,53

53,94

49,03

2,17

2,61

3,26 hydraulic resistance and Water Flow rates

15°K ∆t 20°K ∆t kpa Lit/sec kpa Lit/sec

36,29 1,35 23,54 1,02

40,21

31,38

31,38

1,59

1,91

2,39

22,56

22,56

19,61

1,19

1,43

1,79 kpa

30°K ∆t

Lit/sec

10,79 0,68

12,75

10,79

10,79

0,80

0,96

1,19

Boiler

Fs 90

Fs 105

Fs 130

Fs 160

Minimum Water Flow rates

Lit/sec

0,52

0,58

0,72

0,91

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912.823.1 - GB

11. chiMney Flue connection

Connect the boiler to the flue using a pipe made of stainless steel or plastic material with an internal diameter of 100 mm, capable of resisting normal mechanical stresses over time, as well as high temperatures (<120°C) and the chemical effects of fuel gases and their condensates. Insert the flue-gas union and fasten the connector to the flue-gas thermostat before hooking up to the flue.

Whenever possible use a flue connection that can be disconnected for maintenance.

Important! horizontal flue sections must have a minimum slope of 3° towards the boiler.

Flue accessories made of plastic material for cascade or single installations are available.

Figure 7a

In case exhaust and intake flues not supplied by the table.

potterton coMMercIaL have been installed, these must be certified for the type of use and must have a maximum pressure drop in according to the values reported in

To ensure the correct rated heat input to the maximum and minimum heat input, it is necessary to update the speed (rpm) of the fan, it depends on the lenght of the pipes, in accordance with the installation of flue and air pipes as indicated in the tables below. The factory-set value is referred to the minimum length of flue pipe (0÷10 m). To carry such updating, changing the speed of the fan at the (rpm and pwm%) , refer to par. 13-14.

Max. length of flue duct (L) : 20 m

Each 90° bend reduces the duct max. length by : 1 m

Each 45° bend reduces the duct max. length by : 0.5 m

FLue pressure taBLe avaILaBLe

FS 90

FS 105

FS 130

FS 160

∆P available flue duct B23 Ø 100

110

150

170

280

Cascade solution

∆P available with single non-return valve

Ø 110/110

110

110

-

-

∆P available with double non-return valve

Ø 110/110

-

-

80

120

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21

11.2 connector with c53 type

The kit is used to introduce combustion air from outside the installation area and comprises a hose to be installed in the mixer body.

Please consult the instructions supplied with the kit.

For air ducts (diameter and length), see the kit manual.

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912.823.1 - GB

12. Making the electrical connections

Electrical safety of the appliance is only guaranteed by correct earthing, in accordance with the current standards and regulations.

Connect the boiler to a 230V by means of the three-pin cable supplied with it make sure that the polarities are correctly connected.

Use a double-pole switch with a contact separation of at least 3mm in both poles.

In case you replace the power supply cable fit a HAR H05 VV-F’ 3x0.75mm

2 cable with an 8mm diameter maximum outer sheath.

IMPORTANT: Check that the overall current drawn by accessories connected to the appliance is less than 2 amp. If the value is greater, a relay must be wired between the boiler control circuit board and the accessories drawing the higher current.

Terminal Block M1

Terminal Block M2

Cover

Figure 10

Cover

Facia panel

12.1 terMinal blocks access

• Isolate power to the boiler with the two-pole switch.

• Remove the top facia panel cover (which is held by magnets).

• Unscrew the two screws holding the facia panel in place.

• Swing the facia panel forwards.

Main terminal block M1

• Remove the clip-on cover from terminal strip M1.

• The main terminal block incorporates a fast blow 3.15 A fuse (figure 10). Remove the black fuse holder to check and/or replace the fuse.

Terminal block M2

• Unscrew the fixing screw and remove the cover from terminal block M2.

Terminal block M3

• Unscrew the fixing screws and remove the main cover.

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23

12.2 connecting the puMps

Turn the control box downward to access terminal boards M1 and M3 used for the electrical connections by removing the protective covers (see figure 11).

Terminals M1 a – b: connection of the Primary loop pump for the heating system (Plp)

Check the correct size and rating of the pump by referring to graph n° 1, which shows the boiler pressure losses.

Terminals M3 11 – 12: connection for heating pump (P1)

Terminals M3 13 – 14: connection for hot water tank pump (PDHW)

The electrical specifications of the pump must be as follows:

230 V AC; 50 Hz; 1 A max; cos

f

> 0.8.

If the specifications of the installed pump are different, a relay must be wired between the boiler control circuit board and the pump.

It is advisable not to adopt any electrical connection other than those described.

connect earth to earth strip

Figure 11

12.3 connecting the hot water tank sensor

Remove the resistor from terminals 9-10 of terminal strip M2 (figure 12), and connect the hot water priority

NTC sensor, which is supplied as an accessory.

The sensing element of the NTC device must be located in the recess provided on the storage tank (figure 12).

The temperature and on-off programming of the domestic hot water supply are selected directly from the boiler control panel, as described in this manual under the user instruction headings.

InstructIons pertaInInG to the InstaLLer 912.823.1 - GB

24

safety contact room thermostat

Figure 12

Figure 13

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25

912.823.1 - GB

12.4 description oF the electrical connections to the boiler

Turn the control box downward to access terminal blocks M1 and M2 used for the electrical connections by removing the two protective covers (see figure 10).

Terminals 1-2: connections for the optional SIEMENS QAA73 (optional extra) room temperature regulator.

These connections do not have any specific polarity.

Remove the bridge between terminals 1-2 “TA” on terminal block M1.

Read the instructions provided with the temperature regulator to ensure correct installation and programming.

Terminals 3-4: room temperature thermostat “TA”. Thermostats with integral accelerator resistor must not be used. Check that there is no voltage across the ends of the two thermostat connection wires.

Terminals 5-6: external safety contact (commercially available device).

Terminals 7-8: connections for the optional SIEMENS QAC34 outdoor temperature sensor supplied with the boiler. Read the instructions provided with the outdoor temperature sensor to ensure correct installation.

Terminals 9-10: connections for the optional domestic hot water priority sensor, for connecting single system boilers to external DHW boilers.

cLIp-In aGu 2.511

terminals 3-4 L-n out: connection to signal lamp (230 V - 0,5 A max) for lockout alarm.

terminals 5-6 L-n out: connection to signal lamp (230 V - 0,5 A max) for run mode.

For low voltage signal lamp remove the internal wiring and feed with an external low voltage power supply.

12.5 connecting the qaa73 rooM teMperature regulator

The SIEMENS model QAA73 room temperature regulator, if required (optional accessory) must be connected to terminals 1-2 of terminal block M2 in figure 12.

The link across terminals 3-4, provided for connection of a room temperature thermostat, must be removed.

The settings of the domestic hot water temperature and domestic hot water production schedule must be made using this device.

The timed program of the central heating circuit must be set on the QAA73 if there is a single zone, or in relation to the zone controlled by the QAA73 device.

The timed program for the central heating circuit of the other zones can be set directly on the boiler control panel.

See the instructions provided with the QAA73 temperature regulator for the user parameter programming procedure.

QAA73: parameters which can be set by the installer (service)

By pressing the two PROG buttons together for at least three seconds it is possible to access the list of parameters that the installer can display and/or set.

Press either of these buttons to change the parameter to display or change.

Press the [+] or [-] key to change the value displayed.

Press either of the PROG buttons again to save the change.

Press the information button (i) to quit programming.

Here follows a list of the most commonly used parameters:

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912.823.1 - GB

Line no.

70

72

74

75

77

78

79

80

90

91

Parameter

HC1 gradient heating curve

Selection of central heating circuit temperature curve “kt”

HC1 max. output

Central heating system maximum output temperature

Type of building

Room compensation

Activation/deactivation of the influence of the room temperature. If it is deactivated, the outdoor temperature sensor must be installed.

Automatic adaptation of the temperature curve “kt” in relation to the room temperature.

Opt Start Max

Maximum time the boiler is switched on ahead of the timed program to optimise the temperature in the premises.

Opt Stop Max

Maximum time the boiler is switched off ahead of the timed program to optimise the temperature in the premises.

HC2 gradient heating curve

DHW Red Setp

Minimum temperature of the domestic domestic hot water

DHW program

Selection of the type of timed program for domestic hot water.

24 h/day = always on

PROG HC-1h

PROG HC

PROG DHW

= as HC1 central heating program less one hour

= as central heating program

= specific domestic hot water program

(see also program lines 30-36)

Range

2.5…40

25…85

Light, Heavy on HC1 on HC2 on HC1+HC2 nil

On - off

0…360 min

0…360 min

2.5…40

—.- = not active

10…58

24 h/day

TSP HC-1h

TSP HC

TSP DHW

Default value

15

85

Light

On HC1

On

0

0

—.-

10

24 h/day

- Fault messages

In the event of fault, the display panel on the QAA73 shows the flashing symbol . Press the information key

( ) to display the error code and a description of the fault (see table on paragraph 3.9).

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912.823.1 - GB

12.6 connecting the outdoor teMperature sensor probe

The SIEMENS model QAC34 outdoor temperature sensor must be connected to terminals 7-8 of terminal board

M2 in figure 12.

The procedures for setting the gradient of the temperature curve “kt” vary depending on the accessories connected to the boiler.

a) Without QAA73 room temperature regulator:

The temperature curve “kt” must be selected by setting parameter H532 as described in section 14 “setting the boiler parameters”.

See graph 2 for selecting the curve referred to a room temperature of 20°C.

The chosen curve can be shifted by pressing the (2), button (2) on the boiler control panel, and modifying the value displayed by pressing the and . keys. See graph 3 for curve selection. (The example show in graph 3 refers to the curve Kt=15).

Increase the value displayed if the room temperature required is not reached inside the premises for central heating.

Graph 2

TM = Flow temperature

Te = Composite outside temperature

Sth = Kt Curve Graph 3 b) With QAA73 room temperature regulator:

The temperature curve “kt” must be selected by setting parameter 70 “HC1 curve” of the QAA73 room temperature control device as described in section 12.4 “QAA73: parameters which can be set by the installation

(service) engineer”.

See graph 4 for selecting the curve referred to a room temperature of 20°C.

The curve is shifted automatically on the basis of the room temperature set using the QAA73 climate control.

If the system is divided into zones, the temperature curve “kt” relating to the part of the system not controlled by the

QAA73 must be selected by setting parameter H532 as described in section 14 “setting the boiler parameters”.

Graph 4

TM = Flow temperature

Te = Composite outside temperature c) With AGU2.500 for control of a low temperature system:

Refer to the instructions provided with the AGU2.500 accessories for connection and control of a variable temperature zone.

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28

13. adjusting the gas valves

FS 90 - 105 models have a single gas valve (figure 14 a).

FS 130 - 160 models have a double gas valve (figure 14 b).

Gas nozzle

Gas nozzle

Figure 14a

LEGEND:

Pi: Gas supply pressure connection point

P out: Pressure connection point for measurement of the OFFSET

Pl: Air signal input from fan

V:

K:

Gas flow adjuster screw (high)

OFFSET adjuster screw (low)

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29

Figure 14b

912.823.1 - GB

13.1 single gas valve Models (Fs 90 - 105) Figure 14a

Proceed as follows to adjust the single gas valve:

• Insert the flue analysis probe into the flue sampling hole as instructed in section 17 (figure 17).

• Press and hold the and keys on the control panel simultaneously for 7 seconds until the symbols appear on the display in the position shown in figures 15a and 15b . You are now in ‘calibration

mode’.

• Press the key to set the maximum heat output, with the display showing 100% (figure 15a).

caution: in the event of the boiler failing to ignite, or when replacing the gas valve, the recommended procedure is to tighten the adjuster screw (v) fully and then back off 3 turns, repeating the steps described above.

• Turn the adjuster screw V on the gas valve until you achieve the CO

2 gas (G20) and in table 2.2 for propane (LPG):

levels shown in table 2.1 for natural

- Turn the screw anti-clockwise to increase the CO

2

- Turn the screw clockwise to decrease the CO

2

level.

level.

• Press the key to set the minimum heat output, with the display showing 0% (figure 13b).

• Turn the adjuster screw K on the gas valve until you achieve the CO

2

levels shown in table 2:

-

-

Turn the screw clockwise to increase the CO

2

level.

Turn the screw anti-clockwise to decrease the CO

2

level.

13.2 double gas valve Models (Fs 130 - 160) Figure 14b

Proceed as follows to adjust the double gas valve:

• Connect a pressure gauge to the P1OUT pressure measurement hole on valve 1.

• Insert the probe of the flue gas analyzer in the sampling port as indicated in heading 17 - figure 17.

• Switch on the boiler, activating the “setting function” from the control panel by pressing and holding the

and keys simultaneously until the symbols are displayed, positioned as illustrated in figures

15a and 15b . You are now in ‘calibration mode’.

• Press the key to set the maximum heat output, with the display showing 100% (figure 15a).

caution: in the event of the boiler failing to ignite, or when replacing the gas valves, the recommended procedure is to tighten the adjuster screws (v1) and (v2) fully and then, depending on the model, back off 2¼ turns (Fs 130) or 2½ turns (Fs 160), repeating the steps described above.

• Turn both gas valve adjuster screws (V1) and (V2) so as to set the CO

2 natural gas (G20) and in table 2.2 for propane (LPG):

values as indicated in table 2.1 for

-

-

Turn the screw clockwise to decrease the CO

2

level.

Turn the screw anti-clockwise to increase the CO

2

level.

• Press the key to set the minimum heat output, with the display showing 0% (figure 15b).

• Turn the adjuster screw K1 of gas valve 1 so as to set the pressure value (Pout) as indicated in table 2.1 for natural gas (G20) and in table 2.2 for propane (LPG):

c. Turn the screw clockwise to increase pressure (CO

2

increasing).

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30

d. Turn the screw anti-clockwise to decrease pressure (CO

2

decreasing).

• Remove the pressure gauge from the P1OUT port and connect to the P2OUT port of gas valve 2.

• Turn the adjuster screw K2 of gas valve 2 so as to set the pressure value (Pout) as indicated in table 2.1 for natural gas (G20) and in table 2.2 for propane (LPG):

• Check that the CO

2

value at minimum heat output is as indicated in table 2.1 or 2.2. The value can be optimized by making the necessary fine adjustment to screw K2.

Figure 15a

⇑ ⇑

Figure 15b

13.3 gas conversion

IMportant: in the event of converting the boiler from natural gas (G20) to propane (LPG), the following operation must be carried out before proceeding to adjust the gas valve as described above:

• For models with one valve, replace the diaphragm on the gas valve outlet (figure 14a).

To replace the diaphragm, disassemble the gas valve by undoing the inlet and outlet fittings, then unscrew the nozzle with a pair of straight round nose pliers.

Check the fluid-tightness of the gas fittings removed previously.

• For models with two gas valves, replace the diaphragm located at the venturi inlet (figure 14b).

To enable this operation, the gas valve manifold must first be removed.

Check the fluid-tightness of the gas fittings removed previously.

• Set parameters h536 - h541 - h608 - h609 - h610 - h611 - h612 - h613 by way of the display on the control panel.

The values to be set are given in tables 2.1 and 2.2. The programming methods are described in chapter 14.

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912.823.1 - GB

Gas consumption at 15 °c

1013 mbar

Gas G20 - 2H - 20 mbar

PCI (NET)

Consumption at max. heat output

Consumption at min. heat output

Gas nozzle

CO

2 max. heat output

CO

2 min. heat output

Pout pressure at minimum power

Parameters h536-h613 (rpm) at maximum power

Parameters h541-h610 (pwm %) at maximum power

Parameter h612 (rpm) at minimum power

MJ/m 3 m 3

m 3 /h mm

%

%

/h

Pa

FS 90

34,02

9,26

3,50

11,5

8,7

8,6

-

5100

90

1900

15

FS 105

34,02

10,9

3,89

12

8,7

8,6

-

5650

100

2100

15

FS 130

34,02

13,08

4,23

11

Parameter h609 (pwm) at minimum power

Parameter

Parameter

h611 (rpm) ignition load

h608 (pwm) ignition load

3600 3600

Length of exhaust flue : 0 ÷ 10 m

30 30

Length of exhaust flue : 10 ÷ 20 m

2600

15

Parameter h608 (pwm) ignition load 40 40 cascade solution with single non-return valve Ø 110/110

20

Parameters

Parameter

h536-h613 (rpm) at maximum power

h612 (rpm) at minimum power

Parameter h609 (pwm) at minimum power

Parameter h608 (pwm) ignition load

5500

2200

16,5

40

6000

2250

16

40

-

-

8,7

8,4

-4

4650

55

1600

10

Table 2.1

Gas consumption at 15 °c

1013 mbar

Gas G31 - 3p - 37 mbar

PCI (NET)

Consumption at max. heat output

Consumption at min. heat output

Gas nozzle

CO

2 max. heat output

CO

2 min. heat output

Pout pressure at minimum power

MJ/Kg

Kg/h

Kg/h mm

%

%

Pa

FS 90

46,34

6,77

2,57

7,8

10,2

9,3

-

4600

FS 105

46,34

7,97

2,86

7,8

10,2

9,8

-

5150 Parameters h536-h613 (rpm) at maximum power

Parameters h541-h610 (pwm %) at maximum power

Parameter h612 (rpm) at minimum power

Parameter h609 (pwm) at minimum power

Parameter h611 (rpm) ignition load

Parameter h608 (pwm) ignition load

90

1900

14,5

100

1950

14,5

4200 4200

Length of exhaust flue : 0 ÷ 10 m

40 40

FS 130

46,34

9,56

3,10

7,8

10,2

10,2

-7

4300

55

1450

10

2600

15

Parameter h608 (pwm) ignition load

Length of exhaust flue : 10 ÷ 20 m

50 50 cascade solution with single non-return valve Ø 110/110

Parameters h536-h613 (rpm) at maximum power 5000 5500

Parameter h612 (rpm) at minimum power

Parameter h609 (pwm) at minimum power

Parameter h608 (pwm) ignition load

2200

16,5

50

2100

15

50

20

-

-

-

-

Table 2.2

InstructIons pertaInInG to the InstaLLer

32

15

20

-

-

FS 160

34,02

16,35

4,39

11,5

8,7

8,4

-5

6000

100

1550

9,5

2900

FS 160

46,34

11,95

3,22

7,8

10,2

10,2

-8

5350

100

1450

9,5

2900

15

20

-

-

-

-

912.823.1 - GB

14. setting the boiler paraMeters

The boiler parameters may only be modified by professionally qualified staff proceeding as follows: a) Press the , keys on the boiler’s front panel together for about 3 s until the parameter H90 appears on the display; b) Press the keys to select the parameter for modification;

The boiler parameters may only be modified by professionally qualified staff proceeding as follows: a) Press the , keys on the boiler’s front panel together for about 3 s until the parameter H90 appears on the display; b) Press the keys to select the parameter for modification; c) Press the and keys to modify the parameter; d) Press the key to exit the programming function.

The following are the parameters generally used: parameter n.

h90

Description h91 h505

Minimum D.H.W. temperature setting (°C).

D.H.W. activation program

(0=active; 1=not active)

Maximum temperature (°C) of the central heating circuit HC1 corresponding to:

- the main circuit in systems with just one zone;

- the circuit of the zone where the QAA73 room temperature control device is installed in case of systems with more than one high-temperature zone;

- the high temperature zone circuit in mixed systems and if the SIEMENS AGU2.500 accessory is used.

h507 h516 h532 h533

Maximum temperature (°C) of the central heating circuit HC2 of a system with more than one zone, corresponding to the circuit of the low-temperature zone if the SIEMENS AGU2.500 accessory is used.

Automatic Summer / Winter switching temperature (°C).

Selection of temperature curve of central heating circuit HC1 (see Graph 2)

Selection of temperature curve of central heating circuit HC2 (see Graph 2) h608 h611 h609

PWM (%) Setting: Ignition load

Speed setting (rpm) : Ignition load

PWM Setting (%) : minimum power h541-h610 PWM Setting (%) : maximum power Central heating / Domestic hot water

h612 Speed setting (rpm) : minimum power

h536-h613 Speed setting (rpm) : maximum power Central heating / Domestic hot water h544 Pump post-circulation time in central heating mode (min) h545 h552

( * ) h553

( * )

Burner operating pause time between two start-ups (s)

Hydraulic system setting (see instructions provided with the SIEMENS AGU2.500 accessory)

H552 = 50 with AGU2.500 and QAA73

H552 = 80 with RVA 47

Configuration of heating circuits

H553 = 12 with AGU2.500

h615 h632

( * ) h641 h657

Programmable function:

Heat demand to be supported by the system pump

H632 = 00001111 with AGU2.500 and RVA 47

Fan overrun time setting (s)

Setpoint of autonomous ANTILEGIONELLA function

60...80 °C = setting temperature range

0 = function inactive

Factory setting

10

1

80

80

20

15

15

See table 2

10

180

2

21

9

00001100

10

0

Table 3

( * ) For these parameters see section 10.1 - 10.2 - 10.3 (hydraulic system).

If the electronic circuit board is replaced, make sure that the parameters set are those specific to the boiler model, as indicated in the documentation available from the authorised Service Centre.

InstructIons pertaInInG to the InstaLLer 912.823.1 - GB

33

15. control and operation devices

The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:

• Overheat safety thermostat

This thermostat interrupts the gas flow to the main burner in case the water contained in the circuit has overheated. Under these conditions the boiler locks out and can only repeat the ignition procedure by pressing of the reset button on the boiler after the cause of the trip has been rectified.

It is strictly forbidden to disable this safety device.

• Flue thermostat

This device, positioned on the flue inside the boiler, interrupts the flow of gas to the burner if the temperature exceeds 90 °C. After verifying the cause of the trip, press the reset button positioned on the thermostat itself, then press the reset button on the boiler.

It is forbidden to disenable this safety device

• Flame ionization detector

The flame sensing electrode guarantees safety of operation in case of gas failure or incomplete interlighting of the main burner.

Under such conditions the boiler is locked out.

You must press the reset button on the boiler to restore the normal operating conditions.

• Pump overrun

The electronic control system keeps the pump operating for 10 minutes in central heating mode after the room temperature thermostat has switched off the main burner.

• Frost protection device

The boilers electronic management includes a “frost protection” function in the central heating system which operates the burner to reach a heating flow temperature of 30°C when the system heating flow temperature drops below 5 °C.

This function is enabled as long as the boiler is connected to the a.c. power supply gas supplies and the pressure in the system is as specified.

• Pump-blocking prevention

In case there is no call for heat either from the central heating system or from the DHW system for 24 hours continous the pump will automatically switch on for 10 seconds.

• Hydraulic pressure sensor

This device enables the main burner only to be switched on if the system pressure is over 0.5 bar.

• Gas pressure switch

This device enables the burner only to be switched on if the gas pressure is over 12 mbar.

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912.823.1 - GB

16. positioning oF the ignition and FlaMe sensing electrode

Figure 16

17. check oF coMbustion paraMeters

Drill a hole in the flue at a distance from the boiler equivalent to twice the diameter of the flue to measure combustion efficiency and combustion flue composition in accordance with the rules in force. Use this hole to measure the following parameters:

• Combustion flue temperature

• Oxygen (O

2

) or carbon dioxide (CO

2

) concentration.

• Carbon monoxide (CO) concentration.

the technician responsible for the heating system when the system is first started up, and must then be closed to ensure that the flue remains properly sealed during normal operation.

Important! Close the flue test point hole on completion of measurements.

Figure 17

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35

BOILER FLUE TEST

POINT HOLE

912.823.1 - GB

18. activating the chiMney sweep Function

To facilitate measurement of the combustion efficiency and improve the cleanliness of the production products, the chimney sweep function can be activated by proceeding as described below:

1) Press the (2-3) together until the pointer “ ” appears on the display alongside the symbol (about 3 seconds but no more than 6 seconds). In these conditions, the boiler operates at the maximum heat output in central heating mode.

2) Press either of the buttons to exit the function

Figure 18

19. annual service

To ensure the boiler operates at peak efficiency, the following checks must be performed every year:

• Check on the appearance and tightness of the gas and combustion circuit gaskets;

• Check on the condition and position of the ignition and flame sensing electrodes (see section 16);

• Check on the condition of the burner and its fixing to the aluminium flange;

• Check for any dirt in the combustion chamber. Use a vacuum-cleaner for this cleaning operation;

• Check that the gas valve is calibrated correctly (see section 13);

• Check that there is no dirt in the siphon;

• Check on the central heating system pressure;

• Check on the central heating expansion vessel pressure.

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912.823.1 - GB

20. boiler scheMatic

Figure 19

Key:

1 Water pressure gauge

2 Siphon (condensate)

3 Central heating ntc sensor

4 105°C overheat safety thermostat

5 Gas valve

6 Heat exchanger

7 Flame detector electrode (ionisation probe)

8 Burner

9 Ignition electrode

10 Mixer with venturi

11 Gas injector

12 Fan

13 Flue joint

14 Automatic air vent

15 Hydraulic pressure sensor

16 Boiler drain point

17 Joint flue with flue thermostat

18 Flue thermostat

19 Gas pressure switch

20 Seat of air intake pipe

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912.823.1 - GB

21. illustrated wiring diagraM

21.1 Fs 90 - 105

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38

912.823.1 - GB

21.2 Fs 130 - 160

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39

912.823.1 - GB

Boiler model FS

Category

Maximum heat input (net/gross)

Minimum heat input (net/gross)

Maximum heat output 75/60°C

Maximum heat output 50/30°C

Minimum heat output 75/60°C

Minimum heat output 50/30°C

Useful efficiency according to 92/42/CEE directive

Central heating system max. pressure kW kW kW kcal/h kW kcal/h kW kcal/h kW kcal/h

— bar

Heating circuit temperature range

Flue type

Flue duct diameter

Max. flue mass flow rate

Min. flue mass flow rate

Max. flue temperature

NOx class

Type of gas used

Natural gas feeding pressure 2H

Propane gas feeding pressure 3P

Gas Consumption (NG)

Minimum Operating Pressure

High Level Ventilation to BS6644 boiler room

Low Level Ventilation to BS6644 boiler room

Mechanical inlet to BS6644

Water Flow at 20°K Δt

Hydraulic Resistance at 20°K Δt

Cold Feed Size to BS6644

Safety valve size to BS6644 (open vent)

Open vent BS6644

Maximum Flow Temperature

Water Content

Power supply voltage

Power supply frequency

Rated power supply

Net weight

Dimensions height width depth m 3 /hr

Bar cm cm

2

2 m 3 /sec lit/sec kPa mm mm mm

°C lit

V

Hz

W

°C

— mm kg/s kg/s

°C

—

—

— mbar mbar kg mm mm mm

* C53 (only with air intake kit)

22. technical data

19

32

85

13,7

230

50

100

9,26

1

174,4

348,8

0,067

1,02

25

25

75

850

450

801

II

90

II

105

II

130

II

160

2H3P 2H3P 2H3P 2H3P

87,2-96,7 102,7-113,8 123,2-136,6 154-170,7

33,1-36,7

85

73100

91,6

78776

32,2

27692

34,9

30014

36,8-40,8

100

86000

107,8

92708

35,8

30788

38,8

33368

40-44,3

120

103200

129,7

111542

39

33540

42,1

36206

41,5-46,02

150

129000

162

139320

40,4

34744

43,7

37582

★★★★ ★★★★ ★★★★ ★★★★

4 4 4 4

25÷80 25÷80 25÷80

B23 - B23P - C53*

100

0,041

0,016

78

5

G20

G31

20

37

100

0,049

0,018

80

5

G20

G31

20

37

100

0,058

0,019

77

5

G20

G31

20

37

25÷80

100

0,073

0,020

75

5

G20

G31

20

37

230

50

160

19

32

85

21

10,9

1

205,4

410,8

0,08

1,19

25

25

83

850

450

871

19

32

85

23,3

230

50

135

13,8

1

246,4

492,8

0,1

1,44

22

25

95

850

450

1014

19

32

85

25,3

230

50

235

16,35

1

308

616

0,12

1,80

21

32

103

850

450

1132

InstructIons pertaInInG to the InstaLLer

40

912.823.1 - GB

InstructIons pertaInInG to the InstaLLer

41

912.823.1 - GB

InstructIons pertaInInG to the InstaLLer

42

912.823.1 - GB

InstructIons pertaInInG to the InstaLLer

43

912.823.1 - GB

Commercial sales technical & service enquiries

Tel:

Fax:

Sales hotline:

Technical helpline:

Service hotline: e-mail: web:

0845 070 1055

0845 070 1059

0845 070 1056

0845 070 1057

0845 070 1058 [email protected]

www.pottertoncommercial.co.uk

Applications & Installations

Our experienced technical support team are available to offer advice on any aspect of heating system design and boiler installation.

Please contact: 0845 070 1057

Spares

Potterton Commercial spares are available nationwide through the interpart network of approved stockists.

Alternatively please contact:-

I nter part

Brooks House

Coventry Road

Warwick CV34 4LL

Tel: 0844 871 1540

Commercial service offices

Our service organisation covers the whole of the UK to look after your needs for all Potterton Commercial products.

Our service office offers a wide range of specialised services including:

• Burner commissioning for all fuels

• Boiler service contracts

• Breakdown and repair services

• Burner and boiler replacement

• Oil/gas conversions

• Water treatment and descaling

• Packaged units

All descriptions and illustrations contained within this leaflet have been carefully prepared, but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information in this leaflet.

Baxi Commercial Division

Wood Lane, Erdington,

Birmingham B24 9QP

Email: [email protected]

www.pottertoncommercial.co.uk

Sales:

0845 070 1056

Technical:

0845 070 1057

heating specialists