DOMUSA TEKNIK MINNY User manual

INSTALLATION AND OPERATING INSTRUCTIONS
MINNY
MINNYMINNY
MINNY

Thank you for choosing a DOMUSA TEKNIK heating boiler. rom the
range of DOMUSA TEKNIK
DOMUSA TEKNIKDOMUSA TEKNIK
DOMUSA TEKNIK products you have chosen the Minny
MinnyMinny
Minny
model. With a suitable hydraulic installation, this oil-fired boiler will
provide the ideal level of comfort for your home.
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
DOMUSA TEKNIKDOMUSA TEKNIK
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.
DO
DODO
DOMUSA TEKNIK
MUSA TEKNIKMUSA TEKNIK
MUSA 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. or
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.

1
11
1
INDEX
INDEXINDEX
INDEX P
PP
Page
ageage
age
1 DESCRIPTION O COMPONENTS ........................................................................................................................................................................... 2
2 CONTROLS ..................................................................................................................................................................................................................... 3
3 INSTALLATION INSTRUCTIONS .............................................................................................................................................................................. 4
3.1 4.1.- L OCATION ................................................................................................................................................................................................................................................................... 4
3.2 H YDRAULIC I NSTALLATION ................................................................................................................................................................................................................................................. 5
3.3 E LECTRICAL C ONNECTION .................................................................................................................................................................................................................................................. 5
3.4 O IL INSTALLATION ............................................................................................................................................................................................................................................................... 5
3.5 C OMBUSTION PRODUCTS EXHAUSTION ............................................................................................................................................................................................................................. 6
3.6 I NSTALLING A DHW STORAGE TANK (O PTIONAL ) ............................................................................................................................................................................................................. 8
3.7 A NTI - LEGIONELLA UNCTION ( WITH HOT WATER TANK ONLY ) ......................................................................................................................................................................................... 8
3.8 H EATING CIRCUIT 2 (O PTIONAL ) ........................................................................................................................................................................................................................................ 8
4 COMBUSTION PRODUCTS EXHAUSTION ........................................................................................................................................................... 9
4.1 C OMBUSTION PRODUCT EXHAUST ( WITH AIR INTAKE ROM THE PREMISES ). ................................................................................................................................................................... 9
4.2 C OMBUSTION PRODUCTS EXHAUSTION AND AIR INTAKE HORIZONTALLY - ARRANGED COAXIAL DEVICE Ø 80-125 ( TYPE C13) ................................................................................ 10
4.3 C OMBUSTION PRODUCTS EXHAUSTION AND AIR INTAKE VERTICALLY - ARRANGED COAXIAL DEVICE Ø 80-125 ( TYPE C33) ...................................................................................... 10
5 ILLING THE INSTALLATION .................................................................................................................................................................................. 11
6 DIGITAL DISPLAY ....................................................................................................................................................................................................... 12
7 TEMPERATURE SELECTION .................................................................................................................................................................................... 14
7.1 S ELECTING THE BOILER SET POINT TEMPERATURE ........................................................................................................................................................................................................... 14
7.2 8.2.- S ELECTING THE DHW SETPOINT TEMPERATURE ( WITH HOT WATER TANK ONLY )................................................................................................................................................ 14
8 OPERATION .................................................................................................................................................................................................................. 15
8.1 UNCTIONING IN “H EATING O NLY ” MODE ..................................................................................................................................................................................................................... 15
8.2 UNCTIONING WITH A DOMESTIC HOT WATER TANK ...................................................................................................................................................................................................... 15
8.3 H EATING CIRCUIT 2 UNCTIONING (O PTIONAL ) ............................................................................................................................................................................................................. 16
9 ADDITIONAL UNCTIONS ....................................................................................................................................................................................... 16
9.1 P UMP ANTI - BLOCK UNCTION ......................................................................................................................................................................................................................................... 16
9.2 A NTI - ROST UNCTION .................................................................................................................................................................................................................................................... 16
9.3 B OILER PRESSURE SENSOR UNCTION ............................................................................................................................................................................................................................. 16
9.4 T ELEPHONE RELAY CONNECTION ..................................................................................................................................................................................................................................... 16
9.5 R OOM THERMOSTAT CONNECTION ................................................................................................................................................................................................................................. 17
9.6 A NTI - LEGIONELLA UNCTION ( OPTIONAL ) ( WITH HOT WATER TANK ONLY ) .................................................................................................................................................................. 17
9.7 K EYPAD BLOCK UNCTION ............................................................................................................................................................................................................................................... 17
10 E20 REMOTE CONTROL (OPTIONAL) ............................................................................................................................................................... 18
10.1 UNCTIONING WITHOUT AN OUTDOOR SENSOR .......................................................................................................................................................................................................... 18
10.2 UNCTIONING WITH AN EXTERNAL SENSOR (O PTIONAL ) ............................................................................................................................................................................................. 18
10.3 UNCTIONING WITH A DHW TANK (O PTIONAL ) .......................................................................................................................................................................................................... 18
10.4 T ELEPHONE RELAY UNCTION ....................................................................................................................................................................................................................................... 19
11 BOILER SECURITY SYSTEMS................................................................................................................................................................................. 20
11.1 T EMPERATURE SA ETY CUT - OUT .................................................................................................................................................................................................................................. 20
11.2 B URNER CUT - OUT ......................................................................................................................................................................................................................................................... 20
11.3 L OW PRESSURE CUT - OUT ............................................................................................................................................................................................................................................... 20
12 DRAINING THE BOILER .......................................................................................................................................................................................... 21
13 SWITCHING O THE BOILER .............................................................................................................................................................................. 21
14 IRST START-UP ....................................................................................................................................................................................................... 21
15 INSTALLATION DELIVERY ..................................................................................................................................................................................... 21
16 BOILER MAINTENANCE ......................................................................................................................................................................................... 22
16.1 C LEANING THE BOILER ................................................................................................................................................................................................................................................... 22
16.2 A NTI - ROST PROTECTION .............................................................................................................................................................................................................................................. 23
16.3 B OILER WATER CHARACTERISTICS ................................................................................................................................................................................................................................. 23
17 TECHNICAL DATA ................................................................................................................................................................................................... 24
18 CIRCULATING PUMP LOW CURVES ................................................................................................................................................................ 25
18.1 C HARACTERISTIC CURVES O THE PUMP ....................................................................................................................................................................................................................... 25
18.2 R EGULATION O THE CIRCULATION PUMP .................................................................................................................................................................................................................... 25
18.3 P RESSURE DROP ............................................................................................................................................................................................................................................................. 25
19 DIAGRAMS AND MEASUREMENTS ................................................................................................................................................................... 26
20 ELECTRICAL CONNECTION DIAGRAM ............................................................................................................................................................. 27
21 ELECTRICAL DIAGRAM .......................................................................................................................................................................................... 28
22 ALARM CODES ......................................................................................................................................................................................................... 29
23 BURNER ....................................................................................................................................................................................................................... 30
23.1 A SSEMBLY ...................................................................................................................................................................................................................................................................... 30
23.2 O IL INSTALLATION ......................................................................................................................................................................................................................................................... 30
23.3 B URNER START - UP ......................................................................................................................................................................................................................................................... 30
23.4 A DJUSTING THE COMBUSTION CONDITIONS ................................................................................................................................................................................................................ 30
23.5 O IL PRESSURE ADJUSTMENT .......................................................................................................................................................................................................................................... 32
23.6 O IL SUPPLY PIPING DIAGRAMS ...................................................................................................................................................................................................................................... 32
23.7 T ECHNICAL SPECI ICATIONS .......................................................................................................................................................................................................................................... 33
23.8 N OZZLES ........................................................................................................................................................................................................................................................................ 33
23.9 E LECTRICAL CONNECTION DIAGRAM ............................................................................................................................................................................................................................. 34
23.10 Q UICK CONNECTOR ..................................................................................................................................................................................................................................................... 34
23.11 B URNER CONTROL OPERATING SEQUENCE ................................................................................................................................................................................................................. 35
24 SPARE PARTS LIST ................................................................................................................................................................................................... 36
25 AILURES .................................................................................................................................................................................................................... 42

MINNY
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2
22
2
1
11
1DESCRIPTION OF COMPO
DESCRIPTION OF COMPODESCRIPTION OF COMPO
DESCRIPTION OF COMPONENT
NENTNENT
NENTS
SS
S
1
11
1
2
22
2
3
33
3
8
88
8
9
99
9
7
77
7
4
44
4
6
66
6
1
11
11
11
1
1
11
10
00
0
1.
1.1.
1. Drain valve.
2.
2.2.
2. Domestic, sealed oil burner.
3.
3.3.
3. Heating circulating pump.
4
44
4.
..
. Expansion vessel.
.
..
. Manual air vent.
6
66
6.
..
. Stainless steel condenser.
7
77
7.
..
. Automatic air vent.
8
88
8.
..
. Safety valve.
9
99
9.
..
. Pressure sensor.
10
1010
10.
..
. Thermostat pocket.
1
11
11
11
1.
..
. Steel body.

3
33
3
2
22
2CONTROLS
CONTROLSCONTROLS
CONTROLS
1
11
12
22
2.
. .
. Digital disp
Digital dispDigital disp
Digital display
laylay
lay:
::
:
This is the boiler functioning display, on which
all the operating information, settings and
values appear. In standard operating mode
(default display), the actual boiler temperature
is shown. If any malfunctioning should occur,
the corresponding alarm code will appear on
the digital display.
1
11
13
33
3.
. .
. Boiler temperature touch button
Boiler temperature touch buttonBoiler temperature touch button
Boiler temperature touch button:
::
:
This is used to select the boiler setpoint
temperature. If oFF
oFFoFF
oFF is selected, the heating
function is disabled. To select the desired
temperature, simply place your finger on the
"+
++
+" or "-
--
-" symbols on the touch button to
increase or decrease the desired boiler
temperature.
1
11
14
44
4.
. .
. MODE touch button
MODE touch buttonMODE touch button
MODE touch button:
::
:
When this button is touched the different
boiler temperatures appear on the digital
display.
1
11
1 .
. .
. ON touch b
ON touch bON touch b
ON touch button
uttonutton
utton:
::
:
If you place your finger on this button for 1
second the boiler will switch on or off.
1
11
16
66
6.
. .
. RESET touch button
RESET touch buttonRESET touch button
RESET touch button:
::
:
If the boiler is in lock-out mode as the alarm
has been triggered, touch the RESET button to
reset the lock-out and restore functioning. If
you are modifying any of the settings or
browsing the user menu, you may touch the
RESET button to exit the menu WITHOUT
SAVING and return to the previous menu level.
1
11
17
77
7.
. .
. DHW temperature touch button
DHW temperature touch buttonDHW temperature touch button
DHW temperature touch button:
::
:
This button can be used to select the desired
domestic hot water temperature (only if a DHW
tank is connected to the boiler). If oFF
oFFoFF
oFF is
selected, the DHW function will be disabled. To
select the desired temperature, simply place
your finger on the "+
++
+" or "-
--
-" symbols on the
touch button to increase or decrease the
desired DHW temperature.
1
11
18
88
8.
. .
. Boiler safety thermostat
Boiler safety thermostatBoiler safety thermostat
Boiler safety thermostat
This is a high temperature cut-out safety
mechanism should the boiler temperature
exceed 110ºC.
1
11
19
99
9.
. .
. Fume safety thermostat
Fume safety thermostatFume safety thermostat
Fume safety thermostat
This safety thermostat operates when the
temperature of the combustion products
exceeds 110ºC, in order to protect the
polypropylene duct.

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4
3
33
3INSTALLATION INSTRUC
INSTALLATION INSTRUCINSTALLATION INSTRUC
INSTALLATION INSTRUCTIONS
TIONSTIONS
TIONS
The boiler must be installed by personnel authorised in accordance with the applicable regulations
and standards in force. However, the following recommendations must be complied with when
installing the boiler:
3.1
3.13.1
3.1 4.1.
4.1.4.1.
4.1.-
--
- Location
LocationLocation
Location
The boiler must be installed in a sufficiently ventilated site. Do not obstruct the ventilat
Do not obstruct the ventilatDo not obstruct the ventilat
Do not obstruct the ventilation holes
ion holes ion holes
ion holes
at the front of the base of the boiler.
at the front of the base of the boiler.at the front of the base of the boiler.
at the front of the base of the boiler. The figure shows the minimum distances for maintenance
operations. These minimum distances must be respected..
The boiler is suitable to be installed under a worktop, taking into account the minimum distances
provided for maintenance operations. It should be ensured that said worktop is removable in order
to carry out technical assistance and repair operations.
NOT
NOTNOT
NOTE
EE
E:
::
: *
**
* If this distance is less than 0 mm, open the p
If this distance is less than 0 mm, open the pIf this distance is less than 0 mm, open the p
If this distance is less than 0 mm, open the pre
rere
re-
--
-punched holes arranged in the panels
punched holes arranged in the panels punched holes arranged in the panels
punched holes arranged in the panels
t
tt
to ensure sufficient ventilation in partially sealed installations
o ensure sufficient ventilation in partially sealed installationso ensure sufficient ventilation in partially sealed installations
o ensure sufficient ventilation in partially sealed installations.
..
.

3.2
3.23.2
3.2 Hydraulic Installation
Hydraulic InstallationHydraulic Installation
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.
- The
The The
The condensate pipe should lead to a drain outlet
condensate pipe should lead to a drain outletcondensate pipe should lead to a drain outlet
condensate pipe should lead to a drain outlet, as the Minny boiler is a condensing boiler
and a large amount of water may be generated. This connection should be made to an
appropriate drain or soakaway.
- ill the siphon with water before starting up the unit, to prevent fumes coming out of it.
- If the system flow and return pipes follow a path where air pockets could form in certain places,
it is advisable to fit vent valves at these points. Also install drain cocks at the lowest point in the
system to allow for complete emptying.
IMPORTANT: The boiler SHOULD NOT be allowed to operate with a return temperature below 30°C
IMPORTANT: The boiler SHOULD NOT be allowed to operate with a return temperature below 30°CIMPORTANT: The boiler SHOULD NOT be allowed to operate with a return temperature below 30°C
IMPORTANT: The boiler SHOULD NOT be allowed to operate with a return temperature below 30°C .
..
.
3.3
3.33.3
3.3 Electri
ElectriElectri
Electrical Connection
cal Connectioncal Connection
cal Connection
The boiler is equipped for connection at 230 V~, 50 Hz to terminals 1
11
1 and 2
22
2 of terminal strip J1
J1J1
J1 (see
“ Electrical Connection Diagram ”). Remember to earth the appliance.
Remember to earth the appliance.Remember to earth the appliance.
Remember to earth the appliance.
The boiler has two terminal strips, TA
TATA
TA
1
11
1
(J5) and TA
TATA
TA
2
22
2
(J7) for connecting room thermostats or room
chronothermostats (see “ Electrical Connection Diagram ”) for remote control of heating circuits 1 and 2
respectively. To correctly connect the room thermostats, firstly remove the bridge joining the
terminals of terminal strip TA
TATA
TA
1
11
1
. or connection to TA
TATA
TA
2
22
2
, simply connect the thermostat to the terminal
strip.
3.4
3.43.4
3.4 Oil installation
Oil installationOil installation
Oil installation
The Minny
MinnyMinny
Minny boiler is supplied with a Domestic gas-oil burner (2)
(2)(2)
(2) (see model in Technical
Characteristics). To install the oil line, proceed in accordance with the burner instructions enclosed
with this manual (see Burner section). The oil line installation and start-up of the burner must be
carried out by qualified, authorised personnel.

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6
3.
3.3.
3. Combustion products exhaustion
Combustion products exhaustionCombustion products exhaustion
Combustion products exhaustion
The installation of the flue should only be carried out by qualified personnel. The current standards
and local regulations must be observed.
The Minny
MinnyMinny
Minny boilers are balanced flue oil boilers, so that the combustion products exhaustion is
carried out by means of an outlet duct and an air intake from outside. It can also work with the air
intake of the premises. for this method, the room should be sufficiently ventilated.
- Do not obstruct or block any ventilation opening.
NOT
NOTNOT
NOTE
EE
E:
::
: The boiler is suitable for the connection of the smoke exhaust ducts on the
The boiler is suitable for the connection of the smoke exhaust ducts on the The boiler is suitable for the connection of the smoke exhaust ducts on the
The boiler is suitable for the connection of the smoke exhaust ducts on the back, right side,
back, right side, back, right side,
back, right side,
left side and top, with Ø80/125 coaxial ducts or Ø80 simple ducts
left side and top, with Ø80/125 coaxial ducts or Ø80 simple ductsleft side and top, with Ø80/125 coaxial ducts or Ø80 simple ducts
left side and top, with Ø80/125 coaxial ducts or Ø80 simple ducts.
..
.
It is recommended that the position at the exhaustion duct exterior portion should be in
accordance with the data of the following figures and table:
Position of the e
Position of the ePosition of the e
Position of the exhaustion duct
xhaustion ductxhaustion duct
xhaustion duct Minimum distance
Minimum distanceMinimum distance
Minimum distance
mm
mmmm
mm
A
A A
A under a cornice 300
B
B B
B between two horizontally-arranged ducts 1000
C
C C
C from a next window 400
D
D D
D between two vertically-arranged ducts 1500
E
E E
E from a next venting grid 600
F
F F
F under a balcony (*) 300
G
G G
G under a window 600
H
H H
H under a venting grid 600
I
I I
I from a break back of a building 300
J
J J
J from an angle of a building 300
K
K K
K from the floor level 2500
L
L L
L from a vertically/horizontally-arranged outlet or pipe (**) 300
M
M M
M from a front surface at a distance of 3 metres from the exhaust gas outlet 2000
N
N N
N like the previous one, but with opening 3000
(*)
(*) (*)
(*) In so far the balcony width does not exceed 2000 mm.
(**)
(**) (**)
(**) If the pipe constructive materials were sensitive to the action from the flue gases, this distance should be longer than 500 mm.

7
77
7
IMPORTANT
IMPORTANTIMPORTANT
IMPORTANT:
: :
: All flues, air intakes and accessories should only be those supplied by DOMUSA TEKNIK
All flues, air intakes and accessories should only be those supplied by DOMUSA TEKNIKAll flues, air intakes and accessories should only be those supplied by DOMUSA TEKNIK
All flues, air intakes and accessories should only be those supplied by DOMUSA TEKNIK.
..
.

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8
3.6
3.63.6
3.6 Install
InstallInstall
Installing a DHW
ing a DHWing a DHW
ing a DHW storage tank (Optional
storage tank (Optionalstorage tank (Optional
storage tank (Optional)
))
)
The procedure for suitably connecting a DHW tank to the Minny
MinnyMinny
Minny boiler is as follows:
- Unplug the boiler
Unplug the boilerUnplug the boiler
Unplug the boiler from the mains
from the mainsfrom the mains
from the mains.
..
.
- Connect a DHW temperature sensor (supplied optionally) to sensor terminal strip J3
J3J3
J3 (terminals
16 and 17), first removing the resistance (Ra
RaRa
Ra) supplied by default (see “Electrical Connection
Diagram").
- Insert the temperature sensor bulb in the bulb-holder sheath provided on the hot water tan.
- Connect the hot water tank feed pump to the supply terminal strip J2
J2J2
J2 (BV; terminals N and 5)
see “Electrical Connection Diagram").
or correct hydraulic installation, carefully follow the assembly and connection instructions
enclosed with the hot water tank.
3.7
3.73.7
3.7 Anti
AntiAnti
Anti-
--
-legionella function (with hot water tank only
legionella function (with hot water tank onlylegionella function (with hot water tank only
legionella function (with hot water tank only)
))
)
The Minny
MinnyMinny
Minny boiler allows the activation of the legionella prevention function for The Minny
MinnyMinny
Minny boiler
with a Sanit hot water tank installed has a legionella prevention function that can be enabled for
the domestic hot water in the tank.
This function must be activated by sufficiently qualified personnel. The function is enabled by
changing the boiler model selectors on the display card inside the control panel.
Before carrying out any work on the inside of the boiler, unplug it from the mains
unplug it from the mainsunplug it from the mains
unplug it from the mains. To activate the
anti-legionella function, remove the top cover of the boiler then remove the lid of the control panel
box using a screwdriver to remove the two screws holding it in place. When this cover has been
removed, the electronic circuit board of the display, containing the programming switches, can be
accessed.
Select the anti-legionella function by turning selector 4
selector 4selector 4
selector 4 to ON
ONON
ON (see "Electrical Diagram ").
3.8
3.83.8
3.8 H
HH
Heating circuit 2 (Optional
eating circuit 2 (Optionaleating circuit 2 (Optional
eating circuit 2 (Optional)
))
)
All the models in the Minny
MinnyMinny
Minny range of boilers are supplied with a circulation pump connected to
heating circuit 1 (BC1). In addition to this circuit, all the models are designed to control a second
heating circulation pump in a second heating circuit (circuit 2, BC
2
).
The hydraulic installation of heating circuit 2 should be made using the optional flow c
optional flow coptional flow c
optional flow circuit (IC')
ircuit (IC')ircuit (IC')
ircuit (IC')
on the rear of the boiler (see "Diagrams and Measurements ").
The circulation pump installed in heating circuit 2 must be electrically connected between
terminals N and 6 on the supply connector block J2
J2J2
J2 (see “Electrical Connection Diagram ").

9
99
9
4
44
4COMBUSTION PRODUCTS
COMBUSTION PRODUCTS COMBUSTION PRODUCTS
COMBUSTION PRODUCTS EXHAUSTION
EXHAUSTIONEXHAUSTION
EXHAUSTION
4.1
4.14.1
4.1 Combustion product exhaust (with air intake from the premi
Combustion product exhaust (with air intake from the premiCombustion product exhaust (with air intake from the premi
Combustion product exhaust (with air intake from the premises
sesses
ses)
))
).
..
.
In this type of exhaust of the combustion products, the air intake is carried out from the place
where the boiler is installed.
The maximum duct length
The maximum duct lengthThe maximum duct length
The maximum duct length that can be installed is 12 meters in the Minny 20 model and 10 meters
in the Minny 30 model. or each horizontal meter, the available length is reduced by 2 meters and,
for each 90º elbow, or two 45º elbows, it is reduced by 1 m.
It is recommended that the flue gases outlet pipe be fitted slightly upwardly-inclined 2º to 3º thus
preventing water and condensate projections from being ejected outside.
Horizontal output kit 1m ∅80
Stainless steel
Cod. CGAS000141
90º Bend ∅80 Code
Stainless steel
Cod.CGAS000147
45º Bend ∅80 Code
Stainless steel Cod.
CGAS000148
1m Duct ∅80 Code
Stainless steel
Cod. CGAS000145
0,5 m Duct ∅80 Code
Stainless steel
Cod. CGAS000146
Deflector for horizontal output ∅80
Stainless steel
Cod. CGAS000150
Examples of installation:

MINNY
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1010
10
4.2
4.24.2
4.2 Combustion products exhaustion and air intake horizontally
Combustion products exhaustion and air intake horizontallyCombustion products exhaustion and air intake horizontally
Combustion products exhaustion and air intake horizontally-
--
-arranged coaxial device ø80
arranged coaxial device ø80arranged coaxial device ø80
arranged coaxial device ø80-
--
-12
12 12
12
(type C13
(type C13(type C13
(type C13)
))
)
The combustion products exhaustion and air intake can be carried out through concentric pipes of
Ø80 mm. for the combustion products exhaustion and Ø125 mm. for the air intake.
The
TheThe
The maximum horizontal length
maximum horizontal lengthmaximum horizontal length
maximum horizontal length counted from the boiler, including the kit end, is 7 metres Minny
30 and 8 metres Minny 20. Each elbow of 90°, or two of 45°, reduces the available length by 1 metre,
and 1 metre of horizontal pipe represents 2 metres of vertical pipe.
It is recommended that the flue gases outlet pipe be fitted slightly upwardly-inclined 2º to 3º thus
preventing water and condensate projections from being ejected outside.
1 m Horizontal duct kit
∅
80/125 Stainless steel Cod. CGAS000189
1 m Horizontal duct kit
∅
80/125 Polypropylene
Cod. CGAS000188
Coaxial 90º bend
∅
80/125 Stainless steel
Cod. CGAS000182
Coaxial 90º bend ∅80/125 Polypropylene
Cod. CGAS000080
Coaxial 45º bend
∅
80/125 Stainless steel
Cod. CGAS000183
Coaxial 45º bend ∅80/125 Polypropylene
Cod. CGAS000081
1 m Coaxial duct
∅
80/125 Stainless steel
Cod. CGAS000184
1 m Coaxial duct ∅80/125 Polypropylene
Cod. CGAS000082
Examples of installation:
4.3
4.34.3
4.3 Combustion products exhaustion and air intake vertical
Combustion products exhaustion and air intake verticalCombustion products exhaustion and air intake vertical
Combustion products exhaustion and air intake vertically
lyly
ly-
--
-arranged coaxial device ø80
arranged coaxial device ø80arranged coaxial device ø80
arranged coaxial device ø80-
--
-12
12 12
12
(type C33)
(type C33)(type C33)
(type C33)
The combustion products exhaustion and air intake can be carried out through concentric pipes of
Ø80 mm. for the combustion products exhaustion and Ø125 mm. for the air intake, by means of the
vertically-arranged outlet Kit Ø80-125 code CGAS000231.

11
1111
11
The maximum vertical length
The maximum vertical lengthThe maximum vertical length
The maximum vertical length counted from the boiler, including the kit end, is 7 metres Minny 30
and 10 metres Minny 20. Each elbow of 90°, or two of 45°, reduces the available length by 1 metre.
Vertical duct kit ∅80/125 Stainless steel
Cód. CGAS000181
Vertical duct kit ∅80/125 Polypropylene
Cód. CGAS000360
Black tile ∅80/125
Cód. CGAS000
074
45º bend ∅80/125 Stainless steel
Cód. CGAS000183
45º bend ∅80/125 Polypropylene
Cód. CGAS000081
90º bend ∅80/125 Stainless steel
Cód. CGAS000182
90º bend ∅80/125 Polypropylene
Cód. CGAS000080
1 m Coaxial duct ∅80/125 Stainless steel
Cód. CGAS000184
1 m Coaxial duct ∅80/125 Polypropylene
Cód. CGAS000082
Black tile ∅80/125
Cód. CGAS000075
Examples of installation:
FILLING THE INSTALLA
FILLING THE INSTALLAFILLING THE INSTALLA
FILLING THE INSTALLATION
TIONTION
TION
To fill the installation, it should be provided with a fill valve, which can be used to fill the installation
until a pressure of 1 - 1.5 bars appears on the “boiler pressure” setting on the display. The circuit
should be filled slowly and with the automatic air bleed valve cap (7)
(7)(7)
(7) loose, to let the air out of the
installation. Additionally, open the manual purge bolt ( )
( )( )
( ) of the condenser. After purging, close it
again. The air should also be bled from the rest of the installation using the air bleed valves provided.
When the installation has been filled, close the fill valve.
Minny
MinnyMinny
Minny boilers have a pressure sensor (9)
(9)(9)
(9) for controlling the pressure of the installation. If the
installation pressure drops below a minimum of 0.5 bar, the boiler will not switch on and a low

MINNY
MINNYMINNY
MINNY
12
1212
12
pressure alarm will appear on the display ("
""
"AP
APAP
AP"
""
"). There is the possibility of deactivating this pressure
sensor.
NOT
NOTNOT
NOTE
EE
E:
: :
: Switching on the boiler with no water inside could result in serious
Switching on the boiler with no water inside could result in seriousSwitching on the boiler with no water inside could result in serious
Switching on the boiler with no water inside could result in serious damage
damagedamage
damage.
..
.
6
66
6DI
DIDI
DIGITAL DISPLAY
GITAL DISPLAYGITAL DISPLAY
GITAL DISPLAY
The Minny
MinnyMinny
Minny boiler is electronic and includes a digital display (12)
(12)(12)
(12) showing the actual temperatures, the
setpoint temperatures and the pressure of the installation. In standby mode, the actual boiler
temperature in ºC is shown on the display. The rest of the available display options can be browsed by
touching the MODE button below the display, as follows:
MODE
MODEMODE
MODE touch button
touch buttontouch button
touch button
Digital display
Digital displayDigital display
Digital display
Repeatedly place your finger on the MODE touch button to select the different display options. When
the desired option has been selected, it will return to standby after 20 seconds have elapsed.
The following table shows the different display options:
Standby. The actual boiler temperature is shown.
Actual boiler temperature.
Actual domestic hot water temperature (with hot
water tank).
Boiler setpoint temperature selected using the
corresponding touch button (12)
(12)(12)
(12).

13
1313
13
DHW setpoint temperature selected using the
corresponding touch button (16)
(16)(16)
(16) (with hot water
tank).
Actual boiler pressure, measured by the Pressure
Sensor (6)
(6)(6)
(6).
Indication of the heating demand status of each
circuit connected to the boiler.
Setpoint of the heating pump speed BC
BCBC
BC
1
11
1
.
The desired display contrast can be adjusted using
the touch button on the right of the display (16)
(16)(16)
(16).

MINNY
MINNYMINNY
MINNY
14
1414
14
7
77
7TEMPERATURE SELECTIO
TEMPERATURE SELECTIOTEMPERATURE SELECTIO
TEMPERATURE SELECTION
NN
N
7.1
7.17.1
7.1 Selecting the boiler set point temperature
Selecting the boiler set point temperatureSelecting the boiler set point temperature
Selecting the boiler set point temperature
The desired boiler operating temperature is selected using the touch button, as shown in the
figure. To select the desired temperature, touch the "+
++
+" or "-
--
-" symbols to increase or decrease the
temperature respectively. When the temperature has been selected, the display will return to
standby mode after a few seconds.
The boiler setpoint temperature can also be selected by using the MODE touch button to browse to
the “ boiler setpoint temperature " display option. When the display shows this option, touch the "+
/-" symbols to select the desired temperature.
If you wish to totally disable the boiler heating function ( Summer
SummerSummer
Summer mode), select the setpoint value
" OFF
OFFOFF
OFF " by touching the "-" symbol until this value appears on the display.
The permitted boiler setpoint temperature range is O and 30 - 85 ºC. Minny
MinnyMinny
Minny model boilers are
condensing boilers. In order to obtain maximum boiler performance and energy savings, it is
therefore recommended to select a setpoint temperature of 55-70 ºC, providing this is permitted by
the heating system installed and the insulation conditions of your home.
7.2
7.27.2
7.2 8.2.
8.2.8.2.
8.2.-
--
- Selectin
SelectinSelectin
Selecting the DHW setpoint temperature (with hot water tank only
g the DHW setpoint temperature (with hot water tank onlyg the DHW setpoint temperature (with hot water tank only
g the DHW setpoint temperature (with hot water tank only)
))
)
The desired DHW temperature is selected using the touch button, as shown in the figure. To select
the desired temperature, touch the "+
++
+" or "-
--
-" symbols to increase or decrease the temperature
respectively. When the temperature has been selected, the display will return to standby mode
after a few seconds. The DHW setpoint temperature range permitted is O and 15 - 65 ºC.
The DHW setpoint temperature can also be selected by using the MODE touch button to browse to
the “ DHW setpoint temperature " display option. When this option appears on the display, touch
the "+ /-" symbols to select the desired temperature.
If you wish to totally disable the boiler’s DHW production function, select the setpoint value " OFF
OFFOFF
OFF "
by touching the "-" symbol until this value appears on the display.

1
11
1
8
88
8OPERATION
OPERATIONOPERATION
OPERATION
The Minny
MinnyMinny
Minny boiler is supplied in “heating only” mode by default, designed only to heat up a heating
installation (heating circuit 1). Optionally, a Domestic Hot Water tank and/or a second heating circuit,
heating circuit 2, may be connected to the installation to improve its performance.
8.1
8.18.1
8.1 Functioning in “Heating Only” mo
Functioning in “Heating Only” moFunctioning in “Heating Only” mo
Functioning in “Heating Only” mode
dede
de
In this mode, select the desired boiler setpoint temperature (see " Selecting the boiler setpoint
temperature
") and the temperature of room thermostat 1 (TA1
TA1TA1
TA1) or remote control E20
E20E20
E20 (if the boiler
is equipped with these). The burner and the heating pump of circuit 1 (BC
BCBC
BC
1
11
1
) will begin to function
until the installation reaches the selected boiler setpoint temperature (or the temperature on room
thermostat, if the unit has one). When the temperature of the installation drops below the selected
boiler temperature, the burner will start up again, running the heating cycle.
The boiler heating function can be totally disabled ( Summer
SummerSummer
Summer mode) by selecting " OFF
OFFOFF
OFF " as the boiler
setpoint value. In this operating mode, only the DHW production function will remain enabled,
providing there is a DHW tank connected to the boiler.
NOT
NOTNOT
NOTE
EE
E:
::
: When the heating function is disabled, circuit 2 will also be disabled if
When the heating function is disabled, circuit 2 will also be disabled if When the heating function is disabled, circuit 2 will also be disabled if
When the heating function is disabled, circuit 2 will also be disabled if it is connected
it is connectedit is connected
it is connected.
..
.
8.2
8.28.2
8.2 Functioning with a domestic hot water tank
Functioning with a domestic hot water tankFunctioning with a domestic hot water tank
Functioning with a domestic hot water tank
The Minny
MinnyMinny
Minny boiler may be installed together with a hot water tank from the DOMUSA TEKNIK Sanit
DOMUSA TEKNIK SanitDOMUSA TEKNIK Sanit
DOMUSA TEKNIK Sanit
range, to obtain domestic hot water. or correct installation of the tank, carefully follow the
instructions given in the “Installation Instructions” section of this manual.
In this mode, select the desired DHW setpoint temperature (see " Selecting the DHW setpoint
temperature
"). The burner and the DHW pump will switch on. When the hot water tank reaches the
selected DHW setpoint temperature, it is ready to heat up the heating installation if it is enabled,
starting up the heating pump and switching off the DHW pump. The burner will shut down when
the boiler reaches its selected setpoint temperature. The heating pump will stop when the room
temperature reaches or exceeds the temperature set on the installation’s room thermostat (if it has
one).
If you wish, you may totally disable the domestic hot water production function by selecting "OFF
OFFOFF
OFF"
as the DHW setpoint temperature.

MINNY
MINNYMINNY
MINNY
16
1616
16
8.3
8.38.3
8.3 Heating circuit 2 functioning (Optional
Heating circuit 2 functioning (OptionalHeating circuit 2 functioning (Optional
Heating circuit 2 functioning (Optional)
))
)
All the models in the Minny
MinnyMinny
Minny range of boilers have the option of controlling a second heating circuit.
This requires the installation of a second circulation pump on the boiler. To correctly install this
pump, carefully follow the instructions given in the “Installing heating circuit 2” section of this
manual.
Heating circuit 2 will work with the selected boiler setpoint temperature (see “ Selecting the boiler
setpoint temperature
”) and the temperature of room thermostat 2 (TA2
TA2TA2
TA2) (if the boiler has one). The
burner and the heating pump of circuit 2 (BC
BCBC
BC
2
22
2
) will begin to function until the installation reaches
the selected boiler setpoint temperature (or the temperature on room thermostat 2, if the unit has
one). When the temperature of the installation drops below the selected boiler temperature, the
burner will start up again, running the heating cycle.
NOT
NOTNOT
NOTE
EE
E:
::
: When the heating function is disabled, if OFF is selected circuit 2 will
When the heating function is disabled, if OFF is selected circuit 2 will When the heating function is disabled, if OFF is selected circuit 2 will
When the heating function is disabled, if OFF is selected circuit 2 will also be disabled
also be disabledalso be disabled
also be disabled.
..
.
9
99
9ADDITION
ADDITIONADDITION
ADDITIONAL FUNCTIONS
AL FUNCTIONSAL FUNCTIONS
AL FUNCTIONS
The Minny
MinnyMinny
Minny boiler is equipped with an electronic control for efficiently regulating automatic boiler
functioning. It also has the following additional control features:
9.1
9.19.1
9.1 Pump anti
Pump antiPump anti
Pump anti-
--
-block function
block functionblock function
block function
This function prevents the boiler circulation pumps from seizing up if they have been out of use for
a long period. This system remains enabled while the boiler is plugged into the mains.
9.2
9.29.2
9.2 Anti
AntiAnti
Anti-
--
-frost function
frost functionfrost function
frost function
This function protects the boiler from freezing up during cold weather. If the boiler temperature
drops to below 6 ºC, the heating circulation pump will start up. If the boiler temperature continues
to drop and reaches 4 ºC, the burner will start up, heating the installation. When this function has
been activated, it will continue working until the boiler reaches 8ºC. This system remains on
standby while the boiler is plugged into the mains.
9.3
9.39.3
9.3 Boiler pressure sensor function
Boiler pressure sensor functionBoiler pressure sensor function
Boiler pressure sensor function
This function prevents boiler failure caused by a low water level or excess pressure in the boiler. The
pressure is detected by a pressure sensor (
((
(9
99
9)
))
), and its value appears on the control panel display (see
“ Digital display ”). If the pressure drops below 0.5 bar, the electronic control blocks boiler
functioning and triggers the "AP
APAP
AP" alarm on the display. If boiler pressure exceeds 2.5 bar, the "HI
HIHI
HI"
warning will flash on the display to warn of the excess pressure. If this should occur we recommend
calling the nearest Technical Assistance Service
Technical Assistance ServiceTechnical Assistance Service
Technical Assistance Service, and slightly draining the boiler
9.4
9.49.4
9.4 Telephone relay connection
Telephone relay connectionTelephone relay connection
Telephone relay connection
The Minny
MinnyMinny
Minny boiler is designed to enable a phone relay to be connected for switching the boiler on
and off. This feature allows the boiler to be switched on and off remotely, from any location, by
means of a phone call. The relay is connected to the boiler via terminal strip J6
J6J6
J6 (see “ Electrical
Connection Diagram
”). When the telephone relay contact closes the boiler switches on. When the
contact opens, the boiler switches off and remains in anti-frost protection and pump anti-block
mode.

17
1717
17
9.
9.9.
9. Room thermostat connection
Room thermostat connectionRoom thermostat connection
Room thermostat connection
The boiler has two terminal strips, TA
TATA
TA
1
11
1
and TA
TATA
TA
2
22
2
, for connecting room thermostats or room
chronothermostats (J5 and J7, see " Electrical Connection Diagram ”). This allows the heating mode
for each circuit installed to be switched off according to the room temperature. To suitably connect
them, first remove the bridge joining the terminals of terminal strip TA
TATA
TA
1
11
1
, and to connect TA
TATA
TA
2
22
2
, simply
connect the thermostat to the terminal strip
Installing a room thermostat will optimise the installation’s performance, adapting the heating to
the requirements of your home and obtaining enhanced comfort. Also, if the thermostat allows the
hours of functioning to be programmed (chronothermostat), it can adapt the heating system to the
hours of use of the installation.
9.6
9.69.6
9.6 Anti
AntiAnti
Anti-
--
-legionella function (optiona
legionella function (optionalegionella function (optiona
legionella function (optional) (with hot water tan
l) (with hot water tanl) (with hot water tan
l) (with hot water tank only
k onlyk only
k only)
))
)
This optional function prevents the bacteria causing legionnaire’s disease from proliferating in the
hot water accumulated in the tank. Every 7 days, the temperature of the water in the tank is raised
to 70 ºC to kill any such bacteria. This function will only run if the boiler is left switched on.
The boiler is supplied with this function disabled. To enable it, carefully read the " Installation
Instructions
" section. We recommend that the operation for enabling this function is carried out by
qualified personnel.
9.7
9.79.7
9.7 Keypad block function
Keypad block functionKeypad block function
Keypad block function
This function protects the control panel from being accidentally or erroneously pressed while it is
being cleaned, by children or by unauthorised persons. When this function is enabled, the
electronic control will not react when any of the symbols or touch buttons on the control panel are
pressed.
To lock the keypad, keep your finger on the RESET touch button
for 5 seconds. The word "LOC
LOCLOC
LOC" will flash on the display until the
control panel is unlocked again.
To unlock the keypad, place your finger on the RESET touch button
again for 5 seconds. The display will then return to its normal
status.

MINNY
MINNYMINNY
MINNY
18
1818
18
10
1010
10 E20 REMOTE CONTROL (
E20 REMOTE CONTROL (E20 REMOTE CONTROL (
E20 REMOTE CONTROL (OPTIONAL
OPTIONALOPTIONAL
OPTIONAL)
))
)
A remote control (E20) may optionally be supplied together with the Minny boiler. This remote control
can be used to fully operate the boiler from any room in the home it is installed in. The E20 remote
control governs the settings of heating circuit Nº1 and the installation’s domestic hot water
production (where the case may be).
This remote control allows the hours of home comfort to be programmed for heating circuit Nº1,
adjusting the installation to the particular requirements of the home by measuring the room
temperature and consequently adapting the installation temperature. The remote control can also be
used to adjust the DHW and heating setpoint temperatures at any time, and for viewing the different
boiler operation settings. It also warns of any functioning anomalies affecting the boiler.
The E20 remote control may optionally be connected to an external sensor, for measuring the outside
temperature. When this option is installed, the remote control can adjust the home comfort level
(circuit 1) according to the weather conditions at each particular time, optimising fuel consumption
and heating comfort in the home.
The E20 remote control takes over the control of the boiler when it is connected to it. The different
selectable boiler temperatures must be modified using the remote control. It is easy to install, only
requiring 2 wires for communication between the boiler and the E20 control. It is connected to the
boiler by connecting the two wires on terminal strip J4
J4J4
J4 (see “Electrical Connection Diagram”). or
correct installation and functioning, carefully read the instructions enclosed with the remote control.
The following sections contain a general explanation of the E20 remote control’s different operating
modes and options.
10.1
10.110.1
10.1 Functioning without an outdoor sensor
Functioning without an outdoor sensorFunctioning without an outdoor sensor
Functioning without an outdoor sensor
Conventional heating installation (direct circuit
Conventional heating installation (direct circuitConventional heating installation (direct circuit
Conventional heating installation (direct circuit)
))
)
The maximum temperature for heating circuit Nº1, the scheduled heating times and the desired
room temperatures can be selected on the remote control. The E20 remote control will calculate
the boiler temperature required at each particular time, depending on the temperature of the
room, and it will activate or disable the heating mode of circuit 1 depending on the heating
times and room temperatures programmed.
10.2
10.210.2
10.2 Functioning with an external sen
Functioning with an external senFunctioning with an external sen
Functioning with an external sensor (Optional
sor (Optionalsor (Optional
sor (Optional)
))
)
If the E20 remote control is fitted with an outdoor temperature sensor, it can calculate the heating
temperature of heating circuit 1 according to the outside weather conditions at each particular
time, with optimum adjustment of the heating installation conditions for improved comfort in the
home and energy savings.
Conventional heating installation (direct circuit
Conventional heating installation (direct circuitConventional heating installation (direct circuit
Conventional heating installation (direct circuit)
))
)
The maximum temperature, an operating curve for heating circuit Nº1 (see instructions enclosed
with the E20 remote control) and the desired heating times and room temperatures can all be
selected on the remote control. The E20 remote control calculates the required boiler
temperature at each particular time, depending on the temperature inside the home and the
outside weather conditions, in accordance with the operating curve selected (setting
HEATSLOPE 1 on the E20), switching the heating on and off in accordance with the heating
times and the room temperatures programmed.
10.3
10.310.3
10.3 Function
FunctionFunction
Functioning with a DHW tank (Optional
ing with a DHW tank (Optionaling with a DHW tank (Optional
ing with a DHW tank (Optional)
))
)
When the boiler is installed with a DHW production tank connected, the E20 remote control can be
used to select up to two DHW temperatures and the desired DHW production times. The E20