Thank you for choosing a DOMUSA TEKNIK heating boiler. You have
chosen a boiler which will provide the ideal level of comfort for your
home, always with a suitable hydraulic installation and oil-fired.
This manual forms an essential part of the product and it must be given to
the user. Read the warnings and recommendations in the manual
carefully, as they contain important information on the safety, use and
maintenance of the installation.
These boilers are to be installed by skilled personnel only, in accordance
with the legislation in force and following the manufacturer’s instructions.
The start-up of these boilers and any maintenance operations must only
be carried out by DOMUSA TEKNIK’s Authorised Technical Assistance
Services.
Incorrect installation of these boilers could result in damage to people,
animals or property, and the manufacturer will hold no liability in such
cases.
DOMUSA TEKNIK informs all parties concerned that, in compliance with
section 1 of the first additional provision of Law 11/1997, the
responsibility for delivering packaging waste or used packaging for its
proper environmental management will be that of the final owner of the
product (Article 18.1 Royal Decree 782/1998). At the end of its useful life,
the product must be taken to a selected collection point for electrical and
electronic equipment or must be returned to the distributor at the time of
purchasing a new equivalent appliance. For more detailed information on
the collection schemes available, contact either the collection facilities of
the local authority or the distributor where the purchase was made.
CONTENTS Page
1 LIST OF COMPONENTS.....................................................................................................................................................................2
2 CONTROL ELEMENTS........................................................................................................................................................................3
3.3REMOVAL OF COMBUSTION PRODUCTS ...................................................................................................................................................................4
4 FILLING THE INSTALLATION...........................................................................................................................................................5
5 COMMISSIONING OF THE BOILER.................................................................................................................................................5
6 DELIVERY AND INSTALLATION......................................................................................................................................................5
8.1FUNCTIONING WITH A SANIT STORAGE HEATER.......................................................................................................................................................6
10 CONTROL UNIT-BASED OPERATION (OPTIONAL).................................................................................................................6
11 STOPPING THE BOILER...................................................................................................................................................................6
13 DIAGRAMS AND DIMENSIONS....................................................................................................................................................8
16 SPARE PARTS LIST..........................................................................................................................................................................11
17 BOILER'S WATER PRESSURE DROP DIAGRAMS....................................................................................................................21
19 GENERAL WARRANTY CONDITIONS........................................................................................................................................23
1
Jaka HFD / HFS
1 LIST OF COMPONENTS
123
45678 9 10
1. Thermometer.
2. Heating control thermostat.
3. Safety thermostat.
4. Control unit (Optional).
5. Manometer.
11
6. Main switch.
7.Winter pilot light.
8.Summer pilot light.
9. Temperature cut-out pilot light.
10. Burner cut-out pilot light.
11. Burner. (Only for Jaka HFD)
2
2 CONTROL ELEMENTS
45679 10
1. Thermometer:
This indicates the temperature of the water in
the boiler.
2. Control thermostat:
This is for selecting the working temperature for
water heating, and stopping the burner when
the boiler reaches the selected temperature or
keeping it switched on until this temperature is
reached.
3. Safety thermostat:
This ensures the boiler temperature does not
exceed 110 ºC, by switching it off when it
reaches this temperature.
123
t
bar
8
6. Master switch:
The "O/I" switch turns the boiler on and off. If
your installation has a storage heater from the
DOMUSA TEKNIKSanit range, the "/☼" switch
is for selecting either Summer mode (hot water
only) or Winter mode (heating + hot water).
7. Winter mode pilot light:
This pilot light comes on to show that the boiler
is on Winter mode (Heating and DHW).
8. Summer mode pilot light:
This pilot light comes on to show that the boiler
is on Summer mode (Only DHW).
4. Control unit (Optional):
This optional element allows the installation
temperatures to be adjusted depending on the
requirements of the home and the outdoor
temperature.
5. Manometer:
This indicates the pressure in the installation.
9. Temperature safety cut-out pilot light:
This pilot light comes on to show that the boiler
has switched off due to excess temperature
(over 110 ºC).
10. Burner cut-out pilot light:
This pilot light comes on to show that the boiler
has switched off due to a burner cut-out.
3
Jaka HFD / HFS
3 INSTALLATION INSTRUCTIONS
The boiler must be installed by personnel authorised by the Department of Industry in accordance
with the applicable regulations and standards in force. However, the following recommendations
must also be complied with when installing the boiler:
3.1 Location
The boiler must be installed in a sufficiently ventilated site.
3.2 Flue
This type of boiler must be connected to a flue. A flue is a fume outlet pipe able to generate a
depression, which in the case of the Jaka HFS and Jaka HFD should be at least 1.5 mmca. In order
for the flue to create a depression the following recommendations should be taken into account:
- It should be suitably heat-insulated.
- It should be fitted separately, with one flue for each boiler.
- It should be vertical and have no angles of over 45º.
- It should protrude one metre from the roof ridge or from any adjacent building.
- It should always have the same diameter. Ideally it should be circular, and its diameter must
never be less than that of the boiler outlet.
However, flues must always be constructed in accordance with the installation regulations in force.
3.3 Removal of combustion products
The combustion product removal ducts must be installed by qualified personnel and must comply
with current legislation and standards.
3.4 Hydraulic Installation
The hydraulic installation must be made by qualified personnel. The applicable installation
legislation is to be complied with, and the following recommendations should also be taken into
account:
- The inside of the installation piping should be thoroughly cleaned before switching on the
boiler.
- We recommend inserting cut-off valves between the installation piping and the boiler, to
simplify maintenance tasks.
3.5 Electrical connection
The boiler is designed to be connected to the mains at 220 V 50 Hz, using plugs 1 and 2. Do not
forget to earth the appliance.
The boiler is provided with two terminals for connecting the room thermostat. To do this, remove
the bridge joining terminals 3-4 and connect the room thermostat here.
The boiler is designed for a quick connection to be made to the burner using a 7-pole
Euroconnector.
4
3.6 Oil Installation
The Jaka HFD boiler is supplied with a Domestic gas-oil burner (see model in Technical
Characteristics). To install the oil line, proceed in accordance with the instructions enclosed with the
burner.
4 FILLING THE INSTALLATION
The installation must be provided with a fill valve for this purpose, with which it can be filled until a
pressure of 1 - 1.5 bar appears on the manometer
from the boiler. The rest of the installation must also be suitably drained using the air drain valves
fitted for this purpose. When the installation has been filled, close the fill valve.
NOTE: Do not switch on the boiler without any water in it, as this can seriously damage it.
(5)
. It must be filed slowly, so that the air is released
5 COMMISSIONING OF THE BOILER
In order for the guarantee to be valid, the boiler must be started up by an authorised DOMUSA
TEKNIK Technical Assistance Service. The following must be complied with before starting it up:
- The boiler must be electrically connected to the mains.
- The installation is to be filled up with water (the manometer must indicate 1 - 1.5 bar).
- Fuel must be reaching the burner at a pressure of not over 0.5 bar.
To start up the boiler, set the master switch, the control thermostat, the timer and the room
thermostat (where applicable) to the desired position.
6 DELIVERY AND INSTALLATION
After the initial start-up, the Technical Assistance Service will explain to the user how the boiler
functions, informing of the most important points.
The installer is responsible for making clear to the user the functioning of any control or regulation
device that forms part of the installation but is not supplied with the boiler.
7 SAFETY CUT-OUTS
The boiler is provided with two types of operational safety cut-out:
7.1 Temperature safety cut-out
This is indicated by the temperature cut-out pilot light
exceeds a temperature of 110 ºC. To deactivate it, press the button on the safety thermostat
(you will first need to lift its cover).
(9)
. It is activated whenever the boiler
(3)
7.2 Burner cut-out
This is indicated by the burner cut-out pilot light
burner or oil line. To deactivate it, press the illuminated button which lights up on the burner
NOTE: If either of these cut-out mechanisms is set off repeatedly, contact your nearest
authorised Technical Assistance Service.
(10)
. It is activated if any failure occurs in the
(11)
.
5
Jaka HFD / HFS
8 FUNCTIONING
Turn the control thermostat
temperature. Turn the master switch
The burner and the pump will start up and run until the installation reaches the temperature pre-set
on the control thermostat
temperature drops, the burner will start up again and perform the heating cycle.
8.1 Functioning with a Sanit storage heater
The Jaka HFS boiler may be installed together with a storage heater from the DOMUSA TEKNIK
Sanit range, to obtain domestic hot water. To correctly install this element, carefully follow the
assembly and connection instructions enclosed with the storage heater.
The boiler is equipped with a summer position/winter position selector switch. This switch can be
used to choose between:
- Summer position ☼: in this position the boiler will only produce hot water as needed. The
burner and the storage heater feed pump (summer pump) will be switched on until the hot
water stored reaches the temperature set on the storage heater hot water thermostat. When
this temperature is reached, the burner and the summer pump will switch off.
- Winter position : in this position the boiler will produce hot water as needed and will also
provide heating, giving priority to hot water production.
(2)
and the room thermostat (if the boiler has one) to the desired
(6)
to
"I"
and the summer/winter switch to winter position "".
(2)
(or on the room thermostat, if the boiler has one). When the installation
9 TIMER-BASED OPERATION (OPTIONAL)
The JAKA HFS boiler can optionally be supplied with a timer, to be mounted on the main board. Both
the boiler and timer are equipped with an easy installation system, consisting of a 12-pole connector
(X12)
, as shown in the electrical diagram. Proceed as indicated in the assembly and operation
instructions provided with the timer.
10 CONTROL UNIT-BASED OPERATION (OPTIONAL)
The JAKA HFS boiler may be supplied with an optional Control Unit (E24 BVS).
Various sensors may be incorporated to this control unit, enabling it to regulate two independent
heating zones: a circuit with a mixing valve (e.g. underfloor heating), and a direct circuit (e.g.
radiators). The installation can thus be adjusted to suit the needs of a particular home by measuring
the outside temperature and the room temperature inside the house in each of the two heating zones.
The control unit can also adjust the hot water production of a storage heater connected to the boiler,
giving priority to the hot water production.
Both the boiler and the control unit are provided with an quick installation system, consisting of a 12pole connector
operation instructions enclosed with the control unit.
(X12)
, as shown in the Electrical Diagram. Proceed as indicated in the assembly and
11 STOPPING THE BOILER
To stop the boiler, simply turn the master switch
6
(6)
to "O".
12 BOILER MAINTENANCE
For the boiler to remain in perfect working order, an annual inspection should be carried out by a
technician authorised by DOMUSA TEKNIK. However,
- It is recommendable to thoroughly clean the boiler chamber and flue pipes once a year.
- The installation pressure should be maintained between 1 and 1.5 bar.
- If the boiler has been turned off for a long period of time, it should be checked that the circulating
pumps are functioning correctly. To do this, remove the plug from the front of the pump so that
the pump shaft is visible. If the shaft does not turn, disconnect the pump using the master switch
(6)
. With a suitably-sized screwdriver, press the shaft down gently and turn it in both directions.
Connect the selector again.
7
Jaka HFD / HFS
13 DIAGRAMS AND DIMENSIONS
Jaka HFD:
455
O
845
L
IC: Heating outlet. MODEL
RC: Heating return. MEAS. mm
V: Draining. FLUE mm
190
530
95
230
1 1/4"
RC
95
V
1/2"
HFD-30 HFD-40 HFD-50 HFD-60
385 485 585 685
150 150 150 175
1 1/4"
IC
630
90
Jaka HFS:
845
250
455
L
O
530
95
230
1 1/4"
1/2"
RC
95
V
95
1 1/4"
IC
630
90
230
8
IC: Heating outlet. MODEL
RC: Heating return. MEAS. mm
V: Draining. FLUE mm
Useful efficiency (30%)
Auxiliary electricity consumption at full load el
Auxiliary electricity consumption at part load el
Auxiliary electricity consumption in standby
Ƞ
1
%(PCS)92,0 91,4 90,8 90,8
kW 0,152 0,161 0,161 0,226
max
kW 0,055 0,056 0,056 0,078
min
PSB kW 0,003 0,003 0,003 0,001
mode
Standby heat loss P
Emissions of nitrogen oxides
kW 0,106 0,094 0,141 0,182
stby
NOx mg/k
126 105 128 133
Wh
Heating temperature adjustment ºC 60-85
Maximum safety temperature ºC 110
Maximum pressure for heating mode bar 3
Heating water volume Lts 16,2 20,2 24,2 28,2
Water pressure drop mbar 100 204 263 327
Fume temperature ºC 213 213 208 200
Volume on fume side m
3
0,011 0,017 0,023 0,029
Maximum fume flow Kg/s 0,01320,0186 0,02450,0299
Fume pressure drop mbar 0,17 0,18 0,20 0,22
Combustion chamber length mm 300 400 500 600
Combustion chamber type - wet, with three fume outlets
Burner adjustment type - ON/OFF
Electrical supply - ~220-230 V - 50 Hz - 200 W
Gross weight Kg 110 135 160 185
9
Jaka HFD / HFS
y
y
15 ELECTRICAL DIAGRAM
O/I
Brown
White
C
PON
1a
1
PT
TC
1
Pink
C
TS
21
2b 2a
V
I
2
PB
C
TF3
21
Orange
Purple
Gre
Gre
Pink
Black
Blue
White
Red
X12
1
2
3
4
5
6
7
8
9
10
11
12
White
Brown
Red
Grey
Brown
Yellow
Black
Brown
Black
Brown
1 2 3 4 5 6 7 8 9 10 11
220 V
F N
TA
Blue
Q
Black
bc7
Blue
Blue
BV
Q: Burner.
BV: Hot water pump (control unit option).
BC
: Main heating circuit pump
1
(with control unit, direct circuit).
BC
2: Optional heating circuit pump
(with control unit, mixed circuit).
M: Valve motor (Control unit option).
O/I: On/Off Master Switch.
V/I: Summer/Winter Selector Switch.
TA: Room Thermostat.
BC
Pink
Pink
Black
Grey
Green
Brown
Orange
Brown
Purple
Blue
12 13 14 15 16 17 18 19 20
Black Black
1
Blue
Black
Tacs
Blue
C
Brown
NONC
BC
2
N+ -
M
TC: Control thermostat (on boiler).
TS: Safety thermostat (on boiler).
TF3: Anti-inertia thermostat (on boiler).
Tacs: Hot water thermostat (on storage heater).
PON: On pilot light.
PB: Burner cut-out pilot light.
PT: Temperature cut-out pilot light.
X12: 12-terminal connector for timer or control
unit (Optional).
bc7: Burner control terminal nº 7.
10
16 BURNER
16.1 Assembly
Fix the burner support to the boiler, then fix the burner to the support. This will allow the correct tilt
of the flame tube towards the combustion chamber. Fit the intake and return tubes, inserting the
oil filter in the intake tube.
16.2 Fuel instalation
The "Domestic" burner is equipped with a self-extracting pump, enabling fuel intake from a tank
installed at a lower level than the burner, provided the pressure difference measured with the
vacuum gauge at the pump does not exceed 0.4 bar (30 cmHg).
16.3 Burner start-up
Ensure there is fuel in the tank, that the oil valves are open and that there is an electric connection
to the burner. Turn on the master switch. Unscrew the air bleed screw (manometer point). Then,
when the valve opens, remove the photocell sensor and move it towards a light source until fuel
comes out. Disconnect the burner and screw the bleed screw back in.
16.4 Adjusting the combustion conditions
Observe the flame. If there is insufficient combustion air, it will be dark in colour and will produce
smoke, obstructing the flue outlet.
On the contrary, if there is an excess of combustion air, the flame will be pale or bluish in colour.
This will reduce the performance of the boiler and it will fail to comply with anti-pollution
standards, and the excess air may also hinder the ignition process.
The flame should be orange in colour.
If the shape of the boiler makes it difficult or impossible to observe the flame, the combustion air
flow can be regulated by observing the smoke coming out of the flue. If the smoke is dark in colour,
more air will need to be provided to the burner, and if it is very white, the air in the burner will need
to be decreased until no smoke at all is observed.
If you have a device for determining the composition of the combustion gases, this will be the best
guide for flame adjustment. If not, simply follow the above indications.
11
Jaka HFD / HFS
A
16.5Dimensions
F'
D
C
H
B
I
EF
G
A B C D E F F' G H I J K L
(mm)
F: Domestic D-3.
F': Domestic D-4.
292 265 140 152 21575 98 290 ø80 205 100 100 ø90
L
K
J
12
16.6 Primary air adjustment
To adjust the primary combustion air,
turn the screw using a 6 mm. Allen key,
0
10
as shown in the diagram. Turn it
clockwise to increase the airflow, and
anticlockwise to decrease it.
16.7 Combustion line adjustment
To adjust the combustion line, loosen the combustion line blocking screw "BL". Turn the line
regulator "RL" clockwise to increase the airflow and anticlockwise to decrease it. After adjustment,
tighten the combustion line blocking screw "BL".
-
+
RL
1
0
BL
3 mm
16.8Correct position of electrodes
To ensure correct ignition of the “Domestic” burner, the measurements shown in the diagram must
be observed. Also ensure the electrode fixing screws have been screwed in place before replacing
the flame tube.
3 mm
2/3 mm
13
Jaka HFD / HFS
16.9 Oil pressure adjustment
To adjust the oil pump pressure, turn the screw
(1)
clockwise to increase the pressure, and
anticlockwise to decrease it
SUNTEC - MOD. AS47C
DANFOSS - MOD. BFP 21 L3
1 - Pressure adjustment.
2 - Vacuum gauge point.
3
2
4
3 - Valve.
1
4 - Manometer point.
5
1
5 - Nozzle outlet.
6 - Return.
7 - Intake.
6
7
6
7
16.10 Oil supply piping diagrams
The diagrams and tables below correspond to installations without reductions and with a perfect
hydraulic seal. It is recommended to use copper pipes. A pressure drop of 0.4 bar (30 cmHg) must
not be exceeded.
To connect and disconnect the red oil intake tube to the nozzle, proceed as follows:
- Press the connector ring in the direction of the arrow, pulling on the red tube at the same time.
PRES S
RING
QUICK CONNECTOR
TUBE
OIL
17
Jaka HFD / HFS
16.16 Burner control operating sequence
The burner’s LMO control box has a reset button which
is the key element for resetting the burner control and
activating/deactivating the diagnosis functions.
The multi-colour LED on the reset button is the
indicator for visual diagnosis. The button and the LED
are located under the transparent cover of the reset
button. During normal functioning, the various
operating statuses are indicated in the form of colour
codes (see the colour code table below). During
ignition, the indication is as shown in the following
table:
Colour code table for multi-colour indicator lights (LEDs)
Jaka HFS front panel
Fume inspection cover
Jaka HFS/HFD-30 side
panel
Jaka HFS/HFD-40 side
panel
Jaka HFS/HFD-50 side
panel
Jaka HFS/HFD-60 side
panel
Jaka HFS/HFD-30 top cover
Jaka HFS/HFD-40 top cover
Jaka HFS/HFD-50 top cover
Jaka HFS/HFD-60 top cover
Jaka rear panel
Burner support door
21
20
17
18
19
Pos.
Code Name
7
SEPO002315
CELC000175 Control panel cover
8
CELC000172 Control panel
9
CELC000178 Control unit cover
10
CELC000177 Extension without timer
11
CELC000136 Thermometer
12
CELC000176 Temperature selection knob
13
CELC000007 Control thermostat
14
CELC000034 Anti-inertia thermostat
15
CELC000042 12-pole terminal block
16
CELC000022 Safety thermostat
17
CELC000039 Red pilot light
18
CELC000040 Amber pilot light
19
ELC000138 Main switch
C
20
ELC000137 Manometer
C
21
Base cover
20
18 BOILER'S WATER PRESSURE DROP DIAGRAMS
Within the following diagrams it is possible to calculate the pressure drop of each model of boiler:
Jaka HFS / HFD 30 Jaka HFS / HFD 40
Jaka HFS / HFD 50 Jaka HFS / HFD 60
21
Jaka HFD / HFS
19 TROUBLESHOOTING
This section provides a list of the most common burner and boiler failures.
19.1 Burner failures
We have already mentioned that the burner is equipped with a cut-out system, indicated by a light.
It may cut out accidentally, in which case the button light will come on. It can be unblocked by
pressing the button.
FAILURE CAUSE SOLUTION
- Fuel valve closed Open it
- No electricity supply to boiler Check it
BURNER DOES
NOT IGNITE
FREQUENT
CUT-OUT
- Nozzle defective or dirty Replace or clean it
- Electrodes badly adjusted Adjust them
- Timer on automatic Turn it to manual
- Room or boiler thermostat badly adjusted Correctly adjust it
- Nozzle defective Replace it
- Photoelectric cell dirty Clean it
- Fume circuit obstructed Clean it
- Installation oil filter or burner pump oil filter dirty Clean it
19.2 Boiler failures
FAILURE CAUSE SOLUTION
- The pump is not turning Unblock the pump
RADIATOR
DOES NOT
HEAT UP
EXCESSIVE
NOISE
- Air in hydraulic circuit Drain the installation and
the boiler (the automatic
air drain valve cap must
always be loose)
- Burner badly adjusted Adjust it correctly
- Flue not correctly sealed Eliminate any leaks
- Flame unstable Examine the burner
- Flue not insulated Suitably insulate it
22
20 GENERAL WARRANTY CONDITIONS
DOMUSA TEKNIK guarantees the normal operation of its products in accordance with the following
conditions and periods of time, as from the date of their COMMISSIONING.
1 YEAR for electric and hydraulic elements, pumps, valves, etc.
5 YEARS for boiler shells.
5 YEARS for Hot Water Tank.
This warranty does not include those failures produced by energy or fuel, failures generated by
feeding waters with physical-chemical characteristics such as to produce deposits or corrosion,
mishandling of the equipment and, as a general rule, anything beyond DOMUSA TEKNIK´s control.
The warranty will be considered null and void in the following cases:
1. The boiler han ben installed without meeting the laws and regulations in force regarding the
subject matter.
2. The boiler has been commissioned by other personnel than those autorized by DOMUSA