DOMUSA TEKNIK HDEEM SERIES User manual

INSTALLATION AND OPERATING INSTRUCTIONS
HDEE
HDEEM
domusa
domusa
ER-0170/1996ER-0170/1996
CGM-04/392

Thank you for choosing a DOMUSA TEKNIK electric boiler. From the
range of DOMUSA TEKNIK's products you have chosen the HDEE
model. With a suitable hydraulic installation, this boiler will provide the
ideallevelofcomfortforyourhome.
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,
useandmaintenanceoftheinstallation.
These boilers are to be installed by qualified personnel only, following
themanufacturer’sinstructions.
Only DOMUSA TEKNIK’s Authorised Technical Assistance Services are
authorised to start up these boilers and carry out any maintenance
operations.
The manufacturer will hold no liability in case of damage to people,
animalsorpropertycausedbyincorrectinstallationoftheseboilers.

1
CONTENTS Page
1 LIST OF COMPONENTS.....................................................................................................................................................................2
2 CONTROL COMPONENTS................................................................................................................................................................3
3 IMPORTANT INFORMATION............................................................................................................................................................4
3.1WHO THIS BOOKLET IS FOR..................................................................................................................................................................4
3.2RECOMMENDATIONS ...........................................................................................................................................................................4
3.3APPLICABLE LEGISLATION....................................................................................................................................................................4
3.4WARNINGS............................................................................................................................................................................................4
4 INSTALLATION INSTRUCTIONS......................................................................................................................................................5
4.1HYDRAULIC INSTALLATION..................................................................................................................................................................6
4.2ELECTRICAL INSTALLATION..................................................................................................................................................................6
5 FIRST START-UP...................................................................................................................................................................................7
5.1FILLING THE INSTALLATION .................................................................................................................................................................7
5.2CHECKING THE CIRCULATING PUMP FUNCTIONING...........................................................................................................................7
5.3BLEED THE AIR FROM THE INSTALLATION...........................................................................................................................................7
6 INSTALLATION DELIVERY.................................................................................................................................................................7
6.1OBSERVATIONS.....................................................................................................................................................................................7
7 OPERATION...........................................................................................................................................................................................7
7.1POWER SETTING SELECTION.................................................................................................................................................................7
7.2TEMPERATURE SELECTION ...................................................................................................................................................................7
8 FUNCTIONING WITH TIMER (OPTIONAL) ...................................................................................................................................8
9 SWITCHING OFF THE BOILER..........................................................................................................................................................8
10 BOILER MAINTENANCE..................................................................................................................................................................8
10.1SAFETY DEVICE MAINTENANCE .........................................................................................................................................................8
10.2RECOMMENDATIONS.........................................................................................................................................................................8
11 DIAGRAMS AND MEASUREMENTS.............................................................................................................................................9
12 CIRCULATING PUMP FLOW CURVES.......................................................................................................................................10
13 TECHNICAL CHARACTERISTICS.................................................................................................................................................11
14 ELECTRICAL DIAGRAM.................................................................................................................................................................12
14.1CONTROL DIAGRAM.........................................................................................................................................................................12
14.2POWER DIAGRAM.............................................................................................................................................................................14
14.3POWER CABLE DIMENSIONS............................................................................................................................................................16
14.4CHANGING THE VOLTAGE................................................................................................................................................................16
14.5CHANGING THE BOILER POWER.......................................................................................................................................................16
15 ELECTRICAL CHARACTERISTICS................................................................................................................................................17
16 SPARE PARTS LIST..........................................................................................................................................................................20
16.1HDEE45/90,10/15,180............................................................................................................................................................20
16.2HDEE210.......................................................................................................................................................................................21
16.3HDEEM45/90,10/15,180.........................................................................................................................................................22
16.4HDEEM210...................................................................................................................................................................................23
16.5MAIN BOARD....................................................................................................................................................................................24
17 BOILER SECURITY SYSTEMS........................................................................................................................................................25
17.1BOILER TEMPERATURE SAFETY LOCKING........................................................................................................................................25
17.2LOW PRESSURE LOCKING.................................................................................................................................................................25
18 GENERAL WARRANTY CONDITIONS........................................................................................................................................25

HDEE / HDEEM
2
1LISTOF COMPONENTS
HDEE
1
4
5
2
3
7
6
7
3
2
5
4
1
6
HDEEM
1
2
3
4
5
6
7
3
4
5
7
6
1
2
1. Modularcontrol.
2. Expansion vessel.
3. Automaticairvent.
4. Pressureswitch.
5. HeatingElement.
6. Heatingpump.
7. Pressurereliefvalve.

3
2CONTROLCOMPONENTS
12 3456
1. Safety thermostat “E”:
This is a cut-out mechanism to ensure the
boilertemperaturedoesnotexceed110ºC.
2. Timer (Optional) “q”:
This is an optional element. It can time either
weeks or days and it enables selection of the
heatingswitch-onandswitch-offcycles.
3. Thermohydrometer:
This indicates the temperature and pressure
oftheheatingcircuit.
4. Boiler control thermostat:
Allows to select the desired boiler set point
temperature to be selected, deactivating the
element when the set point temperature is
reached or keeping it functioning until this is
thecase.
5. Main switch “i”:
This is for switchingthe boiler on and off.
6. Power selectors "I", "II":
These enable the desired heating power
stage to be selected. Each stage corresponds
to half power. Maximum power is obtained
whenbothswitchesareon.

HDEE / HDEEM
4
3IMPORTANTINFORMATION
3.1 Who this booklet is for
Thisinstructionbookletisforusebytheboileruserand installer.
3.2 Recommendations
Theinstallationmustbemadebyaqualifiedtechnician.
Theinstallationmustbemadeinaccordancewithapplicablelaw.
Failure to comply with these operating and control procedureinstructionsmaygiveriseto personal
injuryandriskofenvironmentalpollution.
Itisrecommendedtohaveaqualifiedtechniciancarryoutyearlymaintenanceofthe boiler.
Incaseofanomaly,pleasecontacttheinstaller.
Before carrying out boiler maintenance,it is essential to cut off the electricity supply.
Usersmustnotaccessinternalboilercomponentsorcontrolcomponents.
3.3 Applicable legislation
Itisessentialtoobservethelawsinforceregardingelectricboilerinstallation.
3.4 Warnings
This manualformsanintegralpart of the appliance itreferstoand must be givenbacktotheuser.
Boiler installation and maintenance must be carried out by qualified technicians, in accordance
withapplicablelegislation.
DOMUSA TEKNIK shall hold no liability for any damages caused by incorrect installation or incorrect
useoftheapplianceoraccessories.
- DOMUSA TEKNIK reserves the right to modify the technical characteristics and components
of its products without prior notice.
- The availability of certain models and their accessories may vary according to the market.

5
500
500
500
400200
4INSTALLATIONINSTRUCTIONS
Fitting measurements
HDEEM HDEE
Wall mounting system (for HDEEM)
300±15 mm

HDEE / HDEEM
6
4.1 Hydraulic installation
Choosealocationcomplyingwiththeconditionsrequiredbyapplicablelaw.
If the boiler is located on a lower level than any of the heating water pipes, it is recommended to fit
shut-off valves to the flow and return pipes, to avoid having to drain the installation when
maintenanceworkiscarriedoutontheboiler.
Beforeconnectingtheboilerhydraulically,thoroughlycleanthepipes.
Remembertoprovideforafillvalveconnectedtotheflow or return heating circuit.
4.2 Electrical installation
Ensure the voltage in the home is the same as that indicated for the boiler. Make the electrical
connectionsinaccordancewiththeelectricaldiagramsshowninthis manual.
We recommend installing a main switch on the power lines enabling all supply phases to the boiler
tobecutoff.Aneutralphaseisrequiredtoconnect the boiler at 400 V 3N~ .
The boiler must be installed by a qualified technician, observing the applicable legislation. It must
be connected to a heating circuit or domestic hot water network in accordance with its features
andpower.
HDEE HDEEM
Main supply
g
land
Thermostat
gland Thermostat gland
Main supply
g
land

7
5FIRSTSTART-UP
5.1 Filling the installation
Use a filling valve to fill the installation slowly until the pressure shown on the thermohydrometer is
between1-1.5bar.
5.2 Checking the circulating pump functioning
Unscrew the circulating pump cap so that the rotation shaft is visible. Connect the boiler main
switchandcheckifthepumpshaftisturning.Screwthe cap back on.
If the shaft is not turning, switch off the boiler main switch and use a suitable screwdriver to turn
the pump shaft in both directions to unblock it. Turn on the main switch again and check the shaft
isturning.Screwthecapbackon.
5.3 Bleed the air from the installation
Connect the boiler main switch and drain the air from the installation and the boiler using the air
ventvalvesprovidedintheinstallationandontheboiler.
6INSTALLATIONDELIVERY
The installer will explain how the boiler functions to the user, making all necessary observations such
ashowtofill,bleedanddraintheboiler.
6.1 Observations
If the boiler does not start up when you have checked that the power is reaching it, the installation
is filled with water at the correct pressure, the circulating pump is turning and the boiler has not
beencutoutbythesafetycircuitbreaker,turnoffthemainswitch and contact the installer.
7OPERATION
7.1 Power setting selection
The total power to the boiler may be reduced by half, using the half-power switches on the control
panel.Whenbothswitchesareconnected,theboilerwillfunction at maximum power.
7.2 Temperature selection
This is done using the control thermostat command on the control panel. Turn it clockwise for a
higher temperature, or anticlockwise for a lower temperature. When the selected temperature is
reached,itwillautomaticallybekeptconstantbythethermostat.
To regulate the room temperature you will need to install a room thermostat. This thermostat
switches off the boiler when the selected temperature is reached, and starts it up again when the
temperaturedrops.
The boiler is pre-wired for connection of a room thermostat. To do this, remove the bridge from the
connectorblockandconnecttheroomthermostat.

HDEE / HDEEM
8
8FUNCTIONINGWITH TIMER (OPTIONAL)
The boiler may optionally be supplied with a timer, which can be fitted to the main control panel. Both
the boiler and the timer are equipped with a quick fixing system using the 12-way connector (X12)
shown on the electrical diagram. The procedure for this is described in the installation and operating
instructionsenclosedwiththetimer.
9SWITCHINGOFF THE BOILER
To totally switchoff the boiler, turn the mainswitch to “O” .
10 BOILERMAINTENANCE
10.1 Safety device maintenance
Checkthethermostatsandsafetydevicesareworkingcorrectly.
Check the heating circuit pressure relief valves, andthedomestic hot water circuit if applicable.
10.2 Recommendations
Boilermaintenanceisrecommendedatleastonceayear.
Maintenancemustbecarriedoutbyqualifiedtechnicians.
To keep the boiler in perfect working order, a yearly overhaul must be performed by DOMUSA
TEKNIK’sauthorisedpersonnel.
-Itisrecommendabletoexhaustivelychecktheboileroncea year.
-Theinstallationpressureshouldbekeptat1- 1.5 bar.

9
11 DIAGRAMSAND MEASUREMENTS
HDEE
120
100
540
1501655085330450
180
760
IC
V
SRC
V
HDEEM
300330450
175
640
IC
V
SRC
155 40
V
S
RC
40
IC
120
IC: HeatingOutput,HDEEM1"F,HDEE3/4"M.
RC: HeatingReturn,HDEEM3/4"M,HDEE1"F.
VS: Pressurereliefvalve,1/2"F.
V: Drainvalve,1/2"M.

HDEE / HDEEM
10
12 CIRCULATINGPUMP FLOW CURVES
The graphs below can be used to obtain the hydromotive pressure available in the installation at the
boiler output, taking the boiler pressure drop and pump functioning curves into account. These
graphs show three curves, corresponding to the three speeds of the circulating pumps and the boiler
pressuredrop.
1-Constant speed I, II, III (traditional mode):
Thepumpoperatesataconstant,pre-setspeed.
I
II
III
Min.
2-Variable differential pressure (∆p-v):
The setpoint value of the differential pressure H increases in a straight line between ½H and H
within the permitted flow margin. The differential pressure generated by the pump is
adjustedtotheappropriatesetpointvalueofdifferentialpressure.
Min.

11
HDEE 45/90 - 10/15 - 180: HDEE
Pressure Drop
Pressure Drop
HDEEM 45/90 - 10/15 - 180: HDEEM 210:
Pressure Drop
Pressure Drop
13 TECHNICALCHARACTERISTICS
HDEE HDEEM
MODEL 45/90 10/15 180 210 45/90 10/15 180 210
Power kW 4.5-9 10.5-15 18 21 4.5-9 10.5-15 18 21
Main supply voltage V 230 V~ 230 V 3~
400 V 3N~ 400 V 3N~ 230 V~
230 V 3~
400 V 3N~ 400 V 3N~
Element type kW 6x1.5 6x2.5 6x3 6x1.75 6x1.5 6x2.5 6x3 6x1.75
Number of elements - 1 1 1 2 1 1 1 2
Water pressure drop mH2O 0.02 0.08 0.1 0.2 0.30 0.38 0.02 0.08 0,11 0,22 0,31 0,46
Resistance value of heating element Ω35.2 21.1 17.6 30.2 35.2 21.1 17.6 30.2
Expansion vessel volume Litres 7.5 7.5
Maximum operating pressure bar 3 3
Minimum operating pressure bar 0.6 0.6
Maximum operating temperature ºC 90 90
Maximum safety temperature ºC 110 110
Output 3/4" M 1" F
Heating connection Return 1" F 3/4" M
Height mm 760 640
Width mm 450 450
Depth mm 330 330
Weight Kg 51 43

HDEE / HDEEM
12
14 ELECTRICALDIAGRAM
14.1 Control diagram
HDEE-HDEEM 45/90, HDEE-HDEEM 10/15
0 1 L1 L2 L3 O O
TA
P1/ 2 C1 C2 P1/2
TC
C
1
TS
C
2
P
C
2
F
4
7
6
2
3
IG
PON
I1/2I1/ 2
1
5
9 10 11 125 6 7 81 2 3 4
X12
OO
B
C
9
BC: Heatingpump.
TA: Room thermostat.
F: Fuse.
X12: 12-wayconnector for timer (Optional).
IG:Mainswitch.
I1/2:Half-powerswitch.
PON:On pilot light.
P1/2:½powerpilotlight.
TC: Heating control thermostat.
TS: Heating safety thermostat.
P: Pressure switch.
C1, C2:Heatingcontactors.

13
HDEE-HDEEM 180, HDEE-HDEEM 210
0 1 L1 L2 L3 O O
TA
P1/ 2 C1 C2 P1/2
TC
C
1
TS
C
2
P
C
2
F
4
7
6
2
3
IG
PON
I1/2I1/ 2
1
5
9 10 11 125 6 7 81 2 3 4
X12
OO
B
C
9
BC: Heatingpump.
TA: Room thermostat.
F: Fuse.
X12: 12-wayconnector for timer
(Optional).
IG:Mainswitch.
I1/2:Half-powerswitch.
PON:On pilot light.
P1/2:½powerpilotlight.
TC: Heating control thermostat.
TS: Heating safety thermostat.
P: Pressure switch.
C1, C2:Heatingcontactors.

HDEE / HDEEM
14
14.2 Power diagram
HDEE-HDEEM 45/90, HDEE-HDEEM 10/15
O1 L1 L2 L3 a b
R1
R3
R5
R2
R4
R6
B
C
A
C1C
2
P1P2
C1, C2:Heating contactors.
P1, P2:Heating elementunits.
A, B, C: Bridgesforheatingpowerselection.

15
HDEE-HDEEM 180, HDEE-HDEEM 210
N L1 L2 L3
R1
R3
R5
R2
R4
R6
C1C
2
P1P2
C1, C2:Heating contactors.
P1, P2:Heating elementunits.

HDEE / HDEEM
16
14.3 Power cable dimensions
The size of the power cables should correspond to the type and calibre of the fuse, which should be
chosen according to the boiler’s nominal current. The installation must comply with applicable
legislationinallcases.
The permissible current for the electric cabling depends on the room temperature, the diameter,
length and insulation of the conductors, the type of conduit and the conduit fitting and
environment. The table below shows the approximate values for a room temperature of 30 ºC and a
maximum length of 5 metres. The installation must complywith applicable legislation in all cases.
Nominal section (mm) Nominal circuit breaker current (A)
1.5 16
2.5 25
4 32
6 40
10 63
16 80
14.4 Changing the voltage
If the main supply voltage is different from the voltage the boiler is designed for, the boiler must be
adapted to the new voltage. To do this, before connecting the boiler to the main supply, change
the position of the terminal strip bridges as shown in the figures below (models HDEE-HDEEM
45/90 and HDEE-HDEEM 10/15 only).
To remove a bridge, loosen the screws holding it in place and then pull it out of its housing. Repeat
theaboveprocedureinreverseordertoreplaceit.
When the bridges are correctly positioned, connect the electrical supply to the boiler as shown in
thecorrespondingfigure.Remember to make an earth connection.
O 1 L1 L2L3
N L1 L2L3
400 V 3N~
O 1 L1 L2L3
L2L1L3
230 V
3
O 1 L1 L2L3
N L
230 V~
14.5 Changing the boiler power
HDEE-HDEEM 45/90 and HDEE-HDEEM 10/15 boilers allow the maximum boiler heating power to
be altered to suit your requirements. To do this, simply remove some of the heat exchanger
elementbridgesasshowninthetablebelow.
Total power according to
model (kW)
45/90 10/15 Bridges
9 15 Leaveinplace
7.5 12.5 RemoveA
6 10 RemoveAandB
4.5 - Remove A, Band C

17
15 ELECTRICALCHARACTERISTICS
HDEE/HDEEM 45/90
Stage 1 Stage 2 Total Terminal strip Power selection
Single phase 230 V~, 9 kW
Terminal L3 L (A) 19.5 19.5 39.1
Terminal 0 N (A) 19.5 19.5 39.1
Power kW 4.5 4.5 9
O 1 L1 L2 L3
N L
C
B
A
Single phase 230 V~, 7.5 kW
Terminal L3 L (A) 19.5 13 32.5
Terminal 0 N (A) 19.5 13 32.5
Power kW 4.5 3 7.5
O 1 L1 L2 L3
N L
C
B
Single phase 230 V~, 6 kW
Terminal L3 L (A) 13 13 26
Terminal 0 N (A) 13 13 26
Power kW 3 3 6
O 1 L1 L2 L3
N L
C
Single phase 230 V~, 4.5 kW
Terminal L3 L (A) 13 6.5 19.5
Terminal 0 N (A) 13 6.5 19.5
Power kW 3 1.5 4.5
O 1 L1 L2 L3
N L
Three-phase 400 V 3N~, 9 kW
Terminal L1 L1 (A) 6.5 6.5 13
Terminal L2 L2 (A) 6.5 6.5 13
Terminal L3 L3 (A) 6.5 6.5 13
Terminal 0 N (A) 0 0 0
Power kW 4.5 4.5 9
O 1 L1 L2 L3
NL1 L2 L3
C
B
A
Three-phase 400 V 3N~, 7.5 kW
Terminal L1 L1 (A) 6.5 6.5 13
Terminal L2 L2 (A) 6.5 6.5 13
Terminal L3 L3 (A) 6.5 0 6.5
Terminal 0 N (A) 0 6.5 6.5
Power kW 4.5 3 7.5
O 1 L1 L2 L3
NL1 L2 L3
C
B
Three-phase 400 V 3N~, 6 kW
Terminal L1 L1 (A) 0 6.5 6.5
Terminal L2 L2 (A) 6.5 6.5 13
Terminal L3 L3 (A) 6.5 0 6.5
Terminal 0 N (A) 6.5 6.5 6.5
Power kW 3 3 6
O 1 L1 L2 L3
NL1 L2 L3
C
Three-phase 400 V 3N~, 4.5 kW
Terminal L1 L1 (A) 0 6.5 6.5
Terminal L2 L2 (A) 6.5 0 6.5
Terminal L3 L3 (A) 6.5 0 6.5
Terminal 0 N (A) 6.5 6.5 0
Power kW 3 1.5 4.5
O 1 L1 L2 L3
NL1 L2 L3

HDEE / HDEEM
18
HDEE/HDEEM 10/15
Stage 1 Stage 2 Total Terminal strip Power selection
Single phase 230 V~, 15 kW
Terminal L3 L (A) 32.6 32.6 65.2
Terminal 0 N (A) 32.6 32.6 65.2
Power kW 7.5 7.5 15
O 1 L1 L2 L3
N L
C
B
A
Single phase 230 V~, 12.5 kW
Terminal L3 L (A) 32.6 21.7 54.3
Terminal 0 N (A) 32.6 21.7 54.3
Power kW 7.5 5 12.5
O 1 L1 L2 L3
N L
C
B
Single phase 230 V~, 10 kW
Terminal L3 L (A) 21.7 21.7 43.4
Terminal 0 N (A) 21.7 21.7 43.4
Power kW 5 5 10
O 1 L1 L2 L3
N L
C
Three-phase 400 V 3N~, 15 kW
Terminal L1 L1 (A) 10.85 10.85 21.7
Terminal L2 L2 (A) 10.85 10.85 21.7
Terminal L3 L3 (A) 10.85 10.85 21.7
Terminal 0 N (A) 0 0 0
Power kW 7,5 7,5 15
O 1 L1 L2 L3
NL1 L2 L3
C
B
A
Three-phase 400 V 3N~, 12.5 kW
Terminal L1 L1 (A) 10.85 10.85 21.7
Terminal L2 L2 (A) 10.85 10.85 21.7
Terminal L3 L3 (A) 10.85 0 10.85
Terminal 0 N (A) 0 10.85 10.85
Power kW 7.5 5 12.5
O 1 L1 L2 L3
NL1 L2 L3
C
B
Three-phase 400 V 3N~, 10 kW
Terminal L1 L1 (A) 0 10.85 10.85
Terminal L2 L2 (A) 10.85 10.85 21.7
Terminal L3 L3 (A) 10.85 0 10.85
Terminal 0 N (A) 10.85 10.85 10.85
Power kW 5 5 10
O 1 L1 L2 L3
NL1 L2 L3
C