Ferroli DIVAtech F37 D Instructions For Use, Installation And Maintenance

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cod. 3541H480 — Rev. 00 - 09/2015

DIVAtech F37 D

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EN -

INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE

DIVAtech F37 D

2

EN

cod. 3541H480 - Rev. 00 - 09/2015

EN

1. GENERAL WARNINGS

• Carefully read and follow the instructions contained in this instruction booklet.

• After boiler installation, inform the user regarding its operation and give him this
manual, which is an integral and essential part of the product and must be kept with
care for future reference.

• Installation and maintenance must be carried out by professionally qualified person­nel, in compliance with the current regulations and according to the manufacturer's
instructions. Do not carry out any operation on the sealed control parts.

• Incorrect installation or inadequate maintenance can result in damage or injury. The
Manufacturer declines any liability for damage due to errors in installation and use,
or failure to follow the instructions.

• Before carrying out any cleaning or maintenance operation, disconnect the unit from
the electrical power supply using the switch and/or the special cut-off devices.

• In case of a fault and/or poor operation, deactivate the unit and do not try to repair
it or directly intervene. Contact professionally qualified personnel. Any repair/re­placement of the products must only be carried out by qualified personnel using orig­inal replacement parts. Failure to comply with the above could affect the safety of
the unit.

• This unit must only be used for its intended purpose. Any other use is deemed im­proper and therefore hazardous.

• The packing materials are potentially hazardous and must not be left within the
reach of children.

• The unit must not be used by people (including children) with limited physical, sen­sory or mental abilities or without experience and knowledge of it, unless instructed
or supervised in its use by someone responsible for their safety.

• The unit and its accessories must be appropriately disposed of, in compliance with
the current regulations.

• The images given in this manual are a simplified representation of the product. In
this representation there may be slight and insignificant differences with respect to
the product supplied.

2. OPERATING INSTRUCTIONS

2.1 Introduction

DIVAtech F37 D is a high-efficiency heat generator for heating and domestic hot water

production, running on natural gas, equipped with an open-flue burner with electronic ig­nition, sealed chamber with forced ventilation, and microprocessor control system, de­signed for installation indoors or outdoors in a partially protected place (in compliance
with EN 297/A6) for temperatures to -5°C.

2.2 Control panel

Panel

fig. 1 - Control panel

Key of panel fig. 1
1 DHW temperature setting decrease button

2 DHW temperature setting increase button
3 Heating system temperature setting decrease button
4 Heating system temperature setting increase button
5 Display
6 "Sliding Temperature" Menu - Summer/Winter mode selection - Reset button
7 Unit On/Off - Economy/Comfort mode selection button
8 DHW symbol
9 DHW mode
10 Summer mode
11 Multifunction
12 Eco (Economy) mode
13 Heating
14 Heating symbol
15 Burner lit and actual power level (flashing during combustion fault function)
16 Service Tool connection
17 Water gauge

Indication during operation

Heating

A heating demand (generated by the Room Thermostat or Remote Timer Control) is in­dicated by flashing of the hot air above the radiator on the display.

The display (detail 11 - fig. 1) shows the actual heating delivery temperature and, during
heating standby time, the message “d2”.

Domestic hot water (DHW)

A DHW demand (generated by drawing domestic hot water) is indicated by flashing of
the hot water under the tap on the display.

The display (detail 11 - fig. 1) shows the actual DHW outlet temperature and, during
DHW standby time, the message “d1“.

Comfort

A Comfort demand (reinstatement of temperature inside the boiler) is indicated by flash­ing of the water under the tap on the display. The display (detail 11 - fig. 1) shows the
actual temperature of the water in the boiler.

Fault

In case of a fault (see cap. 4.4) the display shows the fault code (detail 11 - fig. 1) and,
during safety standby times, the messages "d3" and "d4".

2.3 Lighting and turning off

Connection to the power supply

• During the first 5 seconds the display will also show the card software release.

• Open the gas cock ahead of the boiler.

• The boiler is now ready to function automatically whenever domestic hot water is
drawn or in case of a heating demand (generated by Room Thermostat or Remote
Temperature Control).

Turning the boiler off and on

Press the on/off button (detail 7 - fig. 1) for 5 seconds.

fig. 2 - Turning the boiler off

When the boiler is turned off, the PCB is still powered. Domestic hot water and heating
are disabled. The antifreeze system remains activated. To relight the boiler, press the

on/off button (detail 7 - fig. 1) again for 5 seconds.

fig. 3

The boiler will be immediately ready to work whenever domestic hot water is drawn or in
case of a heating demand (generated by the Room Thermostat or the Remote Timer
control).

B

The antifreeze system does not work when the power and/or gas to the unit are
turned off. To avoid damage caused by freezing during long idle periods in win­ter, it is advisable to drain all water from the boiler, DHW circuit and system; or
drain just the DHW circuit and add a suitable antifreeze to the heating system,
complying with that prescribed in sec. 3.3.

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 vary 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

eco

comfort

reset

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DIVAtech F37 D

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EN

cod. 3541H480 - Rev. 00 - 09/2015

Domestic hot water (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 ther­mostat 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 max­imum 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 temperature of the heating system is controlled
according to the outside weather conditions, to ensure high comfort and energy saving
throughout the year. In particular, the system delivery temperature is decreased as the
outside temperature increases, according to a specific "compensation curve”.

With 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. Possible
adjustments can in any case be made by the user to improve comfort.

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 curve from 1 to 10 according to the
characteristic. By setting the curve to 0, 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 the parallel curve
offset according to the characteristic (fig. 6).

Press the reset button (detail 6 - fig. 1) again for 5 seconds to exit the "Sliding Temper­ature" 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 - 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 ad­justments are managed according to that given in table 1.

Table. 1

System water pressure adjustment

The filling pressure with system cold, read on boiler water gauge (detail 17 - fig. 1), must
be approx. 1.0 bar. If the system pressure falls to values below minimum, the boiler stops
and fault F37 is displayed. Operate the filling cock detail 1 fig. 7 and bring it to the initial
value. Always close the filling cock at the end of the operation.

fig. 7 - Filling cock

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OFFSET = 20 OFFSET = 40

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/comfort

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 sel ect 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 Sliding Tem­perature adjustment: the boiler card Sliding Temperature has priority.

1

DIVAtech F37 D

4

EN

cod. 3541H480 - Rev. 00 - 09/2015

3. INSTALLATION

3.1 General Instructions

BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSON­NEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL
MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF NA­TIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.

3.2 Place of installation

The combustion circuit is sealed with respect to the place of installation, therefore the
unit can be installed in any room. However, the place of installation must be sufficiently
ventilated to prevent the creation of dangerous conditions in case of even small gas
leaks. This safety standard is required by the EEC Directive no. 2009/142 for all gas
units, including those with sealed chamber

The unit is suitable for operation in a partially protected place in compliance with EN 297
pr A6, for temperatures to -5°C. It is advisable to install the boiler under the slope of a
roof, inside a balcony or in a sheltered recess.

Therefore the place of installation must be free of dust, flammable materials or objects
or corrosive gases.

The boiler is arranged for wall mounting and comes standard with a hooking bracket. Fix
the bracket to the wall according to the measurements given in the cover drawing and hook
the boiler on it. A metal template for marking the drilling points on the wall is available by
request. The wall fixing must ensure stable and effective support for the generator.

A

If the unit is enclosed in a cabinet or mounted alongside, a space must be pro­vided for removing the casing and for normal maintenance operations

3.3 Plumbing connections

Important

B

The safety valve outlet must be connected to a funnel or collection pipe to pre­vent water spurting onto the floor in case of overpressure in the heating circuit.
Otherwise, if the discharge valve cuts in and floods the room, the boiler manu­facturer cannot be held liable.

B

Before making the connection, check that the unit is arranged for operation with
the type of fuel available and carefully clean all the system pipes.

Carry out the relevant connections according to the cover diagram and the symbols giv­en on the unit.

Note: The unit has an internal bypass in the heating circuit.

Water system characteristics

In the presence of water harder than 25° Fr (1°F = 10ppm CaCO

3

), use suitably treated

water in order to avoid possible scaling in the boiler.

Antifreeze system, antifreeze fluids, additives and inhibitors

When necessary, antifreeze fluids, additives and inhibitors can be used only if the man­ufacturer of such fluids or additives guarantees that they are suitable 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 in
heating systems and compatible with the materials of the boiler and system.

3.4 Gas connection

The gas must be connected to the relevant union (see figure on cover) in conformity with
the current regulations, with a rigid metal pipe or with a continuous surface flexible s/steel
tube, installing a gas cock between the system and boiler. Make sure all the gas connec­tions are tight.

3.5 Electrical connections

Important

B

The unit must be connected to an efficient earthing system in conformity with
current safety regulations. Have the efficiency and suitability of the earthing
system checked by professionally qualified personnel; the Manufacturer de­clines any liability for damage caused by failure to earth the system.

The boiler is prewired and provided with a "Y" type cable (without plug) for con­nection to the electric line. The connections to the power supply must be per­manent and equipped with a double-pole switch with contact opening distance
of at least 3 mm, installing fuses of max. 3A between the boiler and the line.
Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue wire /
EARTH: yellow/green wire) in connections to the electric line.

B

The unit's power cable must not be replaced by the user; if damaged, switch
the unit off and have the cable replaced by professionally qualified personnel.
If replacing the power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with
max. ext. diameter of 8 mm.

Room thermostat (optional)

B

IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE
CONTACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMI­NALS WILL PERMANENTLY DAMAGE THE ELECTRONIC BOARD.

When connecting time controls or a timer, do not take the power supply for
these devices from their breaking contacts Their power supply must be by
means of direct connection from the mains or with batteries, depending on the
kind of device.

Accessing the electrical terminal block

The electrical terminal block can be accessed after removing the casing. The layout of
the terminals for the various connections is also given in the wiring diagram in fig. 21.

fig. 8 - Accessing the terminal block

3.6 Fume ducts

Important

The unit is a "C type" with sealed chamber and forced draught, the air inlet and fume out­let must be connected to one of the following extraction/suction systems. The unit is ap­proved for operation with all the Cny flue configurations given on the dataplate. Some
configurations may be expressly limited or not permitted by law, standards or local reg­ulations. Before installation, check and carefully follow the instructions. Also, comply with
the instructions on the positioning of wall and/or roof terminals and the minimum distanc­es from windows, walls, ventilation openings, etc.

Baffles

Boiler operation requires fitting the baffles supplied with the unit. Make sure the boiler
has the correct baffle (when used) and that it is properly positioned .

A Baffle replacement with boiler not installed
B Baffle replacement with boiler and fume ducts already installed

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