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FL D HF

3

EN

cod. 3541P701  -  Rev. 00  -  10/2018

2.4 Adjustments
Summer/Winter Switchover

Press the 

summer/winter

 button (detail 6 - fig. 1) for 2 seconds.

The display activates the Summer symbol (detail 10 - fig. 1): the boiler will only deliver
domestic hot water. The antifreeze system remains activated.
To deactivate the Summer mode, press the 

summer/winter

 button (detail 6 - fig. 1)

again for 2 seconds.

Heating temperature adjustment

Use the heating buttons (details 3 and 4 - fig. 1) to adjust the temperature from a min. of
30°C to a max. of 80°C; in any case, it is advisable not to operate the boiler below 45°C.

fig. 4

DHW temperature adjustment

Use the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of
40°C to a max. of 55°C.

fig. 5

Room temperature adjustment (with optional room thermostat)

Using the room thermostat, set the temperature required in the rooms. If the room ther-
mostat is not installed, the boiler will keep the system at the set system delivery setpoint
temperature.

Room temperature adjustment (with optional remote timer control)

Using the remote timer control, set the required temperature in the rooms. The boiler will
adjust the system water according to the required room temperature. For operation with
remote timer control, please refer to the relevant instruction manual.

ECO/COMFORT selection

The unit has a function that ensures a high domestic hot water delivery speed and max-
imum comfort for the user. When the device is activated (COMFORT mode), the water
contained in the boiler is kept hot, thereby ensuring immediate availability of hot water
on opening the tap, without waiting times.
The user can deactivate the device (ECO mode) by pressing the 

eco/comfort

 button

(detail 7 - fig. 1). In ECO mode the display activates the ECO symbol (detail 12 - fig. 1).
To activate the COMFORT mode, press the 

eco/comfort

 button (detail 7 - fig. 1) again.

Sliding Temperature

When the optional external probe is installed the boiler adjustment system works with
"Sliding Temperature". In this mode, the heating system temperature is regulated ac-
cording to weather conditions, to ensure the high comfort and energy efficiency through-
out the year. In particular, as the outside temperature increases the system delivery
temperature decreases according to a specific "compensation curve".
With the Sliding Temperature adjustment, the temperature set with the heating buttons
(detail 3 - fig. 1) becomes the maximum system delivery temperature. It is advisable to
set a maximum value to allow system adjustment throughout its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. However,
the user can make any further adjustments necessary to optimise comfort levels.
Compensation curve and curve offset
Press the 

reset button

 (detail 6 - fig. 1) for 5 seconds to access the “Sliding temperature”

menu; the display shows “CU” flashing.
Use the DHW buttons (detail 1 - fig. 1) to adjust the desired curve from 1 to 10 according
to the characteristic (fig. 6). By setting the curve to 0, the sliding temperature adjustment
is disabled.
Press the heating buttons (detail 3 - fig. 1) to access parallel curve offset; the display
shows “OF” flashing. Use the DHW buttons (detail 1 - fig. 1) to adjust parallel curve offset
according to the characteristic (fig. 7).
Press the 

reset button

 (detail 6 - fig. 1) again for 5 seconds to exit the "Sliding Temper-

ature" menu.
If the room temperature is lower than the required value, it is advisable to set a higher
order curve and vice versa. Proceed by increasing or decreasing in steps of one and
check the result in the room.

fig. 6 - Compensation curves

fig. 7 - Example of compensation parallel curve offset

Adjustments from Remote Timer Control

A

If the Remote Timer Control (optional) is connected to the boiler, the above ad-
justments are managed according to that given in table 1.

Table. 1

System water pressure adjustment

The filling pressure read on the boiler water gauge (detail 2 - fig. 8) with system cold must
be approx 1.0 bar. If the system pressure falls below minimum values, the boiler stops
and fault 

F37

 is displayed. Pull out the filling knob (detail 1 - fig. 8) and turn it anticlock-

wise to return it to the initial value. Always close it afterwards.
Once the system pressure is restored, the boiler will activate the 300-second air venting
cycle indicated on the display by 

Fh

.

To prevent boiler shutdown, it is advisable to periodically check the pressure on the
gauge with system cold. In case of a pressure below 0.8 bar, it is advisable to restore it.

fig. 8- Filling knob

I I I I

I

III

I

I I I I

II

II

I

Heating temperature setting

Adjustment can be made from the Remote Timer Control menu 
and the boiler control panel.

DHW temperature adjustment

Adjustment can be made from the Remote Timer Control menu 
and the boiler control panel.

Summer/Winter Switchover

Summer mode has priority over a possible Remote Timer Control 
heating demand.

Eco/Comfort selection

On disabling DHW from the Remote Timer Control menu, the 
boiler selects the Economy mode. In this condition, the 

eco/com-

fort

 button (detail 7 - fig. 1) on the boiler panel is disabled.

On enabling DHW from the Remote Timer Control menu, the 
boiler selects the Comfort mode. In this condition it is possible 
select one of the two modes with the 

eco/comfort

 button (detail 7 

- fig. 1) on the boiler panel.

Sliding Temperature

Both the Remote Timer Control and the boiler card manage Slid-
ing Temperature adjustment: the boiler card Sliding Temperature 
has priority.

20

30

40

50

60

70

80

90
85

20

10

0

-10

-20

1

2

3

4

5

6

8

9

10

7

20

30

40

50

60

70

80

90

85

20

30

40

50

60

70

80

90

85

1

2

3

4

5

6

8

9

10

7

1

2

3

4

5

6

8

9

10

7

OFFSET = 20

OFFSET = 40

1

A

B

1

Summary of Contents for FL D HF24

Page 1: ...cod 3541P871 Rev 00 10 2018 c od 3541P Rev 0 2018 INSTRUCTIONS FOR USE INSTALLATION AND MAINTENANCE RU EN 3...

Page 2: ...domestic hot water production are only active with the optional hot water tank connect ed as indicated in sec 3 3 2 2 Control panel Panel fig 1 Control panel Key of panel fig 1 1 DHW temperature sett...

Page 3: ...e and curve offset Press the reset button detail 6 fig 1 for 5 seconds to access the Sliding temperature menu the display shows CU flashing Use the DHW buttons detail 1 fig 1 to adjust the desired cur...

Page 4: ...table and do not cause damage to the exchanger or other components and or materials of the boiler and system Do not use generic antifreeze fluids additives or inhibitors that are not specific for use...

Page 5: ...peration requires fitting the baffles supplied with the unit Make sure boiler is properly fitted with the correct baffle if to be used A Baffle replacement with boiler not installed B Baffle replaceme...

Page 6: ...856 1 B2X Intake from installation room and wall or roof exhaust IMPORTANT THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION FL D HF24 FL D HF32 Max permissible length 60 meq 48 meq Baffle to use...

Page 7: ...ion current is forced to the pre calibration value of the absolute minimum current Offset parameter Parameter q01 6 Press the DHW buttons to adjust the parameter q01 until the minimum nominal pressure...

Page 8: ...Open Chamber with fume thermo stat 2 Sealed Chamber with fume pres sure switch 3 Sealed Chamber Combustion con trol with fume thermostat on recuperator 4 LOW NOx Sealed Chamber Com bustion control wi...

Page 9: ...or remote control Make sure the fuel consumption indicated on the meter matches that given in the technical data table in cap 5 Make sure that with no demand for heating the burner lights correctly o...

Page 10: ...ve Check the gas valve and replace it if necessary F10 Delivery sensor 1 fault Sensor damaged Check the wiring or replace the sen sor Wiring shorted Wiring disconnected F11 DHW sensor fault Sensor dam...

Page 11: ...26 RU cod 3541P701 Rev 00 10 2018 5 1 7 3 4 10 3 4 11 3 4 209 3 4 210 3 4 21 22 23 HF24 e HF32 24 HF32 25 HF24 HF32 700 400 0 1 2 3 4 330 195 200 200 195 200 200 36 131 66 65 102 155 10 209 7 210 11 7...

Page 12: ...5 2 General view and main components fig 27 General view FL D HF24 fig 28 General view FL D HF32 700 709 400 117 110 120 81 100 65 66 66 65 36 102 32 44 14 22 278 16 27 19 36 95 81 5 114 56 187 74 29...

Page 13: ...n gas pressure at burner G20 mbar 1 5 1 5 Max gas flow G20 m3 h 2 73 3 64 Min gas flow G20 m3 h 0 88 1 22 Burner nozzles G31 no x 11 x 0 79 15 x 0 79 Gas supply pressure G31 mbar 37 37 Max gas pressur...

Page 14: ...ulating pump speed Pressure power diagrams FL D HF32 A LPG B NATURAL GAS Circulating pump head pressure losses FL D HF32 A Boiler pressure losses 1 2 and 3 Circulating pump speed A 8 9 10 11 12 13 14...

Page 15: ...32 Heating circulating pump 44 Gas valve 72 Room thermostat optional 81 Ignition detection electrode 95 Diverter valve 114 Water pressure switch 138 External probe optional 139 Remote timer control o...

Page 16: ...PMW D W Serial Number 1820KK0021 18 20 KK 0021 0DQXIDFWXUHU 0DQXIDFWXUHU DGGUHVV 0RGHO RGH 4QZ L 306 30 4Q L WPD 3Q 2 3Q 12 6HULDO QXPEHU DUFRGH 1 1 3URGXFWLRQ GDWH 6HH WKH PDQXDO 8 028693 868563 G 9...

Page 17: ...RU 1 8 8 2 2 1 FL D HF A sez 3 3 2 2 1 1 1 2 3 4 5 6 7 8 9 10 11 12 Eco 13 14 15 16 17 11 1 d2 11 1 d1 Comfort 11 1 cap 4 4 11 1 d3 d4 d5 2 3 5 7 1 5 2 7 1 5 3 B sez 3 3 0 1 4 2 3 reset eco comfort 9...

Page 18: ...t 7 1 ECO 12 1 7 1 3 1 6 1 5 CU 1 1 1 10 6 0 3 1 OF 1 1 7 6 1 5 6 7 A 1 1 2 8 1 0 F37 1 8 300 Fh 0 8 8 I I I I I I I I I I I I I I I I I I ECO 7 1 7 1 20 30 40 50 60 70 80 90 85 20 10 0 10 20 1 2 3 4...

Page 19: ...8 1 9 9 3 3 1 3 2 B 2009 142 5 C 15 C A 3 3 B B 25 25 Fr 1 F 10 CaCO3 10 30 1KWMA11W 10 8 9 10 3 4 11 3 4 95 209 3 4 210 3 4 3 4 25 3 5 B B 3 3A B HAR H05 VV F 3x0 75 2 8 B 230 1 8 9 0 1 2 3 4 10 11 1...

Page 20: ...5 6 72 139 155 10 kOhm 1 8 kOhm 138 3 4 5 6 A 1 2 B 3 2 1 4 5 6 C1X C3X 60 100 80 125 FL D HF24 5 FL D HF32 5 10 90 1 0 5 45 0 5 0 25 0 2 HF24 43 HF32 45 0 3 HF24 43 HF32 45 2 5 3 10 C1X C1X C3X C3X C...

Page 21: ...2 1KWMA06K 2 0 2 0 4 0 45 1KWMA01K 1 2 2 2 45 1KWMA65A 1 2 2 2 90 1KWMA02K 2 0 3 0 90 1KWMA82A 1 5 2 5 90 1KWMA70U 1 5 2 5 1KWMA16U 0 2 0 2 1KWMA55U 3 0 T 1KWMA05K 7 0 1KWMA85A 2 0 1KWMA86A 5 0 80 80...

Page 22: ...q01 10 8 q01 1 2 10 9 q01 10 15 Eco comfort 5 B TEST Eco Comfort 2 q02 q02 1 2 10 3 1 q01 q01 1 2 10 Eco Comfort 2 TEST TEST TEST 3 4 1 5 TEST 19 19 TEST 100 3 4 1 00 100 1 1 0 2 1 100 TEST TEST 3 TE...

Page 23: ...1 190 2 450 3 700 b10 b02 1 0 1 10 0 b02 2 0 1 10 b02 3 b02 4 b11 b02 1 10 100 10 b02 2 10 100 10 15 b02 3 b02 4 b12 0 1 0 FL D HF P01 0 40 20 P02 1 20 C 5 P03 0 10 2 P04 0 20 6 P05 31 85 C 80 P06 0...

Page 24: ...4 2 B cap 5 4 3 B 20 1 P15 CO2 b03 0 0 30 20 b03 1 b03 2 CO2 b03 3 0 30 CO2 b03 4 0 30 b03 5 P16 0 No F43 10 1 15 1 15 C P17 100 100 P18 0 100 100 60 P19 b02 1 0 20 C 10 b02 2 0 20 C b02 3 b02 4 P20...

Page 25: ...A 6 1 1 d4 30 d5 5 F 8 5 9 27 28 29 A01 A02 A03 F04 F05 A06 F07 A09 F10 1 F11 F14 2 A16 F20 A21 F20 10 F20 A23 A24 F34 180 F35 F37 F39 A41 F42 F43 H2 O F50 A51 5 10 3 4 44 11 3 4 56 14 74 16 81 19 95...

Page 26: ...very 3 4 11 System return 3 4 209 Hot water tank delivery 3 4 210 Hot water tank return 3 4 fig 21 Front view fig 22 Side view fig 23 Top view HF24 and HF32 fig 24 Top view HF32 fig 25 Bottom view HF2...

Page 27: ...3541P701 Rev 00 10 2018 26 5 2 27 FL D HF24 28 FL D HF32 700 709 400 117 110 120 81 100 65 66 66 65 36 102 32 44 14 22 278 16 27 19 36 95 81 5 114 56 187 74 29 28 32 44 14 22 278 16 27 19 36 95 81 5 1...

Page 28: ...9 9 P Pmax 80 60 C 93 0 93 1 30 90 5 91 0 NOx 3 150 NOx G20 x 11 x 1 35 15 x 1 35 G20 20 0 20 0 G20 12 0 12 0 G20 1 5 1 5 G20 3 2 73 3 64 G20 3 0 88 1 22 G31 x 11 x 0 79 15 x 0 79 G31 37 37 G31 35 0...

Page 29: ...D HF24 A 1 2 3 FL D HF32 A B FL D HF32 A 1 2 3 A 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 35 30 25 20 15 10 5 kW mbar B 0 1 2 3 4 5 6 7 0 500 1 000 1 500 2 000 Q l h H m H 2 O A 3 2 1 A...

Page 30: ...RU cod 3541P701 Rev 00 10 2018 5 6 30 A 16 32 44 72 81 95 114 138 139 155 278 81 1kW L N 230V 50 Hz 16 N L 32 L N T T 278 4 3 2 1 44 ABM01A 95 3 2 1 RED LIGHT BLUE WHITE 114 3 2 1 72 139 138 155 10kO...

Page 31: ......

Page 32: ...i VIA n 047 6 BRUCIATORI CALDAIE MURALI E TERRA A GAS GRUPPI TERMICI IN GHISA E IN ACCIAIO GENERATORI DI ARIA CALDA TRATTAMENTO ACQUA CONDIZIONAMENTO...

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