DOMUSA Jaka HFD User manual

INSTALLATION AND OPERATING INSTRUCTIONS
JAKA HFD
JAKA HFS
ER-0170/1996
CGM-04/392

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,alwayswithasuitablehydraulicinstallationandoil-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
maintenanceoftheinstallation.
These boilers are to be installed by skilled personnel only, in accordance
withthelegislationinforceandfollowingthemanufacturer’sinstructions.
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
thelocalauthorityorthedistributorwherethepurchasewasmade.

1
CONTENTS Page
1 LIST OF COMPONENTS.....................................................................................................................................................................2
2 CONTROL ELEMENTS........................................................................................................................................................................3
3 INSTALLATION INSTRUCTIONS......................................................................................................................................................4
3.1LOCATION.................................................................................................................................................................................................................4
3.2FLUE..........................................................................................................................................................................................................................4
3.3REMOVAL OFCOMBUSTION PRODUCTS ...................................................................................................................................................................4
3.4HYDRAULIC INSTALLATION.......................................................................................................................................................................................4
3.5ELECTRICAL CONNECTION.........................................................................................................................................................................................4
3.6OIL INSTALLATION....................................................................................................................................................................................................5
4 FILLING THE INSTALLATION...........................................................................................................................................................5
5 COMMISSIONING OF THE BOILER.................................................................................................................................................5
6 DELIVERY AND INSTALLATION......................................................................................................................................................5
7 SAFETY CUT-OUTS.............................................................................................................................................................................5
7.1TEMPERATURE SAFETY CUT-OUT ..............................................................................................................................................................................5
7.2BURNER CUT-OUT.....................................................................................................................................................................................................5
8 FUNCTIONING......................................................................................................................................................................................6
8.1FUNCTIONING WITH ASANIT STORAGE HEATER.......................................................................................................................................................6
9 TIMER-BASED OPERATION (OPTIONAL).....................................................................................................................................6
10 CONTROL UNIT-BASED OPERATION (OPTIONAL).................................................................................................................6
11 STOPPING THE BOILER...................................................................................................................................................................6
12 BOILER MAINTENANCE..................................................................................................................................................................7
13 DIAGRAMS AND DIMENSIONS....................................................................................................................................................8
14 TECHNICAL CHARACTERISTICS...................................................................................................................................................8
15 ELECTRICAL DIAGRAM.................................................................................................................................................................10
16 SPARE PARTS LIST..........................................................................................................................................................................11
17 BOILER'S WATER PRESSURE DROP DIAGRAMS....................................................................................................................21
18 TROUBLESHOOTING.....................................................................................................................................................................22
18.1BURNER FAILURES................................................................................................................................................................................................22
18.2BOILER FAILURES .................................................................................................................................................................................................22
19 GENERAL WARRANTY CONDITIONS........................................................................................................................................23

Jaka HFD / HFS
2
1LIST OF COMPONENTS
1 2 3
4 5 6 7 8 9 10
11
1. Thermometer.
2. Heatingcontrol thermostat.
3. Safetythermostat.
4. Controlunit (Optional).
5. Manometer.
6. Main switch.
7. Winterpilot light.
8. Summerpilot light.
9. Temperaturecut-out pilot light.
10. Burnercut-out pilot light.
11. Burner. (Only for Jaka HFD)

3
2CONTROLELEMENTS
t
bar
1 2 3
4 5 6 7 9 10
8
1. Thermometer:
This indicates the temperature of the water in
theboiler.
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
reachesthis temperature.
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:
Thisindicates the pressure in the installation.
6. Master switch:
The "O/I" switch turns the boiler on and off. If
your installation has a storage heater from the
DOMUSA TEKNIK Sanit 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
ison Winter mode (Heating and DHW).
8. Summer mode pilot light:
This pilot light comes on to show that the boiler
ison Summer mode (Only DHW).
9. Temperature safety cut-out pilot light:
This pilot light comes on to show that the boiler
has switched off due to excess temperature
(over110 ºC).
10. Burner cut-out pilot light:
This pilot light comes on to show that the boiler
hasswitched off due to a burner cut-out.

Jaka HFD / HFS
4
3INSTALLATIONINSTRUCTIONS
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
mustalso be complied with when installing the boiler:
3.1 Location
Theboiler 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
forthe flue to create a depression the following recommendations should betaken 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 fromanyadjacent building.
- It should always have the same diameter. Ideally it should be circular, and its diameter must
neverbe less than that of the boiler outlet.
However, flues must always be constructedin accordance with the installation regulations inforce.
3.3 Removal of combustion products
The combustion product removal ducts must be installed by qualified personnel and must comply
withcurrent 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
simplifymaintenance 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
thebridge 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.

5
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.
4FILLINGTHE 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 (5) . It must be filed slowly, so that the air is released
from the boiler. The rest of the installation must also be suitably drained using the air drain valves
fittedfor this purpose. When the installation has been filled, close thefill valve.
NOTE: Do not switch on the boiler without any water in it, as this can seriously damage it.
5COMMISSIONINGOF 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 (themanometermust indicate 1 - 1.5 bar).
-Fuel must be reaching the burner at a pressure of notover 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.
6DELIVERYAND 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
devicethat forms part of the installation but is not supplied withthe boiler.
7SAFETYCUT-OUTS
Theboiler 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
(9) . It is activated whenever the boiler
exceeds a temperature of 110 ºC. To deactivate it, press the button on the safety thermostat (3)
(youwill first need to lift its cover).
7.2 Burner cut-out
This is indicated by the burner cut-out pilot light (10) . It is activated if any failure occurs in the
burneror oil line. To deactivate it, press the illuminated button whichlights up on the burner
(11) .
NOTE: If either of these cut-out mechanisms is set off repeatedly, contact your nearest
authorised Technical Assistance Service.

Jaka HFD / HFS
6
8FUNCTIONING
Turn the control thermostat (2) and the room thermostat (if the boiler has one) to the desired
temperature. Turn the master switch (6) to "I" and the summer/winter switch to winter position "".
The burner and the pump will start up and run until the installation reaches the temperature pre-set
on the control thermostat (2) (or on the room thermostat, if the boiler has one). When the installation
temperaturedrops, the burner will start up again and perform the heatingcycle.
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
assemblyand connection instructions enclosed with the storage heater.
The boiler is equipped with a summer position/winter position selector switch. This switch can be
usedto 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
thistemperature is reached, the burner and the summer pump will switchoff.
- Winter position :in this position the boiler will produce hot water as needed and will also
provideheating, giving priority to hot water production.
9TIMER-BASEDOPERATION (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
instructionsprovided with the timer.
10 CONTROLUNIT-BASED OPERATION (OPTIONAL)
TheJAKA HFS boiler may be supplied with anoptional 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 thehouse in each of the twoheatingzones.
The control unit can also adjust the hot water production of a storage heater connected to the boiler,
givingpriority to the hot water production.
Both the boiler and the control unit are provided with an quick installation system, consisting of a 12-
pole connector (X12) , as shown in the Electrical Diagram. Proceed as indicated in the assembly and
operationinstructions enclosed with the control unit.
11 STOPPINGTHE BOILER
Tostop the boiler, simply turn the master switch (6) to "O".

7
12 BOILERMAINTENANCE
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 fluepipes 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.
Connectthe selector again.

Jaka HFD / HFS
8
13 DIAGRAMSAND DIMENSIONS
Jaka HFD:
455
845
L190
O
230 95
1 1/4"
1 1/4"
1/2"
IC
RC V
95
90
530
630
IC: Heatingoutlet. MODEL HFD-30 HFD-40 HFD-50 HFD-60
RC: Heatingreturn. MEAS. mm 385 485 585 685
V: Draining. FLUE mm
150 150 150 175
Jaka HFS:
250
845
455 L
O
95 230
95
530
230 95
90
630
IC
RC V
1 1/4"
1 1/4"
1/2"
IC: Heatingoutlet. MODEL HFS-30 HFS-40 HFS-50 HFS-60
RC: Heatingreturn. MEAS. mm 385 485 585 685
V: Draining. FLUE mm
150 150 150 175

9
14 TECHNICALCHARACTERISTICS
JAKA HFD/HFS 30 40 50 60
Lowtemperature
Boilertype - heatingonly
Ratedheat output Prated kW 29 40 50 60
Usefulheat output P4kW 28,1 39,4 50,8 60,7
Usefulheat output (30%) P1kW 8,9 12,1 15,6 18,6
Seasonalspace heating energy efficiency ȠS% 86 87 86 86
%(PCI) 91,5 94,7 94,5 94,5
Usefulefficiency Ƞ4%(PCS) 86,3 89,3 89,1 89,1
%(PCI) 97,5 97 96,3 96,3
Usefulefficiency (30%) Ƞ1%(PCS) 92,0 91,4 90,8 90,8
Auxiliaryelectricity consumption at full load elmax kW 0,152 0,161 0,161 0,226
Auxiliaryelectricity consumption at part load elmin kW 0,055 0,056 0,056 0,078
Auxiliary electricity consumption in standby
mode PSB kW 0,003 0,003 0,003 0,001
Standbyheat loss Pstby kW 0,106 0,094 0,141 0,182
Emissionsof nitrogen oxides NOx mg/k
Wh 126 105 128 133
Heatingtemperature adjustment ºC 60-85
Maximumsafety temperature ºC 110
Maximumpressure for heating mode bar 3
Heatingwater volume Lts 16,2 20,2 24,2 28,2
Waterpressure drop mbar 100 204 263 327
Fumetemperature ºC 213 213 208 200
Volumeon fume side m3 0,011 0,017 0,023 0,029
Maximumfume flow Kg/s 0,0132 0,0186 0,0245 0,0299
Fumepressure drop mbar 0,17 0,18 0,20 0,22
Combustionchamber length mm 300 400 500 600
Combustionchamber type - wet,with three fume outlets
Burneradjustment type - ON/OFF
Electricalsupply - ~220-230V - 50 Hz - 200 W
Grossweight Kg 110 135 160 185

Jaka HFD / HFS
10
15 ELECTRICALDIAGRAM
1 2345 678910 11
F N
Q BV
TA
bc7
220 V
Blue Blue
Black
BC1
Blue
12 13 14 15 16 17 18 19 20
Tacs
C
NONC
BlackBlack
BC2
Blue
Blue
Black
Brown
M
N+ -
O/I
1a
1
Brown
2
1
3
4
5
6
7
8
9
10
11
12
Gre
y
Gre
y
Pink
Orange
Black
Purple
Blue
White
Red
X12
White Brown Red Grey Brown Yellow Black Brown Black Brown Pink Pink Black
PB
I
V
2
2b2a
TF3
C
21
PON
TS
C
21
PT
TC
C
1
Grey Green Brown Orange Brown Purple Blue
Pink
White
Q: Burner.
BV: Hot water pump (control unit option).
BC1:Main heating circuit pump
(with control unit, direct circuit).
BC2: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.
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.

11
16 BURNER
16.1 Assembly
Fix the burner support to the boiler, then fix the burner to the support. This willallowthe correct tilt
of the flame tube towards the combustion chamber. Fit the intake and return tubes, inserting the
oilfilter 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
vacuumgauge 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 andscrew 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.
Theflame 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
tobe 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
guidefor flame adjustment. If not, simply follow the above indications.

Jaka HFD / HFS
12
16.5 Dimensions
I
G
E F
H
F'
B
A
C
D
LJ
K
A B C D E F F' G H I J K L
(mm) 292 265 140 152 215 75 98 290 ø80 205 100 100 ø90
F: DomesticD-3.
F': Domestic D-4.

13
16.6 Primaryair adjustment
To adjust the primary combustion air,
turn the screw using a 6 mm. Allen key,
as shown in the diagram. Turn it
clockwise to increase the airflow, and
anticlockwiseto 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 combustionline blocking screw "BL".
BL
RL
+
-
3 mm
0
1
16.8 Correctposition 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
theflame tube.
2/3 mm
3 mm
10
0

Jaka HFD / HFS
14
16.9 Oil pressure adjustment
To adjust the oil pump pressure, turn the screw (1) clockwise to increase the pressure, and
anticlockwiseto decrease it
1- Pressure adjustment.
2- Vacuum gauge point.
3- Valve.
4- Manometer point.
5- Nozzle outlet.
6- Return.
7- Intake.
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
notbe exceeded.
Intake installation
H Pipe length
(m) int8 mm. int 10 mm.
0,0 25 60
0,5 21 50
1,0 18 44
1,5 15 38
2,0 12 26
2,5 10 26
3,0 8 20
3,5 6 16
Charging installation
H Pipe length
(m) int8 mm. int 10 mm.
0,5 10 20
1,0 20 40
1,5 40 80
2,0 60 100
Intake installation
H
Charging installation
H
H
SUNTEC - MOD. AS47C
1
2
34
5
67
DANFOSS - MOD. BFP 21 L3
3
5
4
2
7
6
1

15
16.11 Technical specifications
MODEL D-3 D-4
Minimum consumption Kg/h 1,5 2,3
Maximum consumption Kg/h 3 4,65
Minimum power kW 17,7 27,2
Maximum power kW 35,5 55,2
Motor power at 2800 r.p.m. W 200
Adjustment type On/Off
Electric current 220 V - 50 Hz
Weight Kg
12,5
Preheater YES
16.12 Operating curves
5
10
15
12 3 4 5
Kg/h
10200 20400 30600 40800 51000 Kcal/h
11.8 23.72 47.4435.58 59.3 Kw
mmH2O
OVERPRESSURE / FLOW
D-3 D-4
16.13 Fuel flow according to the nozzle and pressure
GPH 9 Atm.
Kg/h 10 Atm. Kg/h 11 Atm. Kg/h 12 Atm. Kg/h 13 Atm. Kg/h 14 Atm. Kg/h 15 Atm. Kg/h 16 Atm. Kg/h 17 Atm. Kg/h
0,40 1,45 1,55 1,60 1,67 1,75 1,80 1,87 1,94 1,97
0,50 1,80 1,90 2,00 2,10 2,20 2,27 2,33 2,34 2,35
0,55 2,00 2,10 2,20 2,30 2,40 2,50 2,60 2,68 2,71
0,60 2,20 2,30 2,40 2,50 2,60 2,70 2,80 2,90 3,00
0,65 2,35 2,50 2,60 2,70 2,80 2,90 3,05 3,10 3,20
0,75 2,70 2,85 3,00 3,15 3,25 3,40 3,50 3,60 3,70
0,85 3,10 3,25 3,40 3,55 3,70 3,80 4,00 4,10 4,20
1,00 3,60 3,80 4,00 4,20 4,35 4,50 4,70 4,80 4,90
1,10 4,00 4,20 4,40 4,60 4,80 5,00 5,10 5,65 5,75

Jaka HFD / HFS
16
16.14 Electrical connection diagram
WITH CONNECTOR
125 6 8 10 11 123
FR
TR

MB
EV1
LB
TCTS
Ph
N
4
EV2
F
7
WITHOUT CONNECTOR
125 6 8 10 11 123
FR
TR

MB EV1
LB
4
EV2
TC
TS
Ph
N
B4 S3
T2 T1 NL1
IG
F
CH
LB'
7
B4: Contact of hour-counter.
S3: Contact of blocking lamp.
TC: Boiler Thermostat.
TS: Safety Thermostat.
CH: Hour-counter.
IG: Main switch
F: Fuse.
LB: Cut-offLight.
LB': ExternalCut-off Light.
FR: Photocell.
TR: Transformer.
MB: OilPump Motor.
MB': Auxiliar oil Pump Motor.
EV: Valve.
Ph: Phase.
N: Neutral.

17
16.15 Quick connector
Toconnect and disconnect the red oil intake tube to the nozzle,proceed as follows:
-Press the connector ring in the direction of the arrow, pullingon the red tube at the same time.
PRESS
RING
TUBE
OIL
QUICK CONNECTOR

Jaka HFD / HFS
18
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/deactivatingthe 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)
Status Colour code Colour
Wait time «tw», other standby statuses ................................................................... Off
Fuel pre-heater on …………………………………… Yellow
Ignition phase, controlled ignition Flashing yellow
Functioning, flame OK …………………………………… Green
Functioning, flame not OK
Flashing green
External light during burner ignition Red/green
Undervoltage Yellow/red
Failure, alarm
…………………………………… Red
Error code output (see «Error code table») Flashing red
Interface diagnosis
Flashing red light
….. Steady light Red
Off Yellow
Green
Botón de rearme
Reset button