DOMUSA Evolution EV AC Installation And Operating Instructions Manual

Brand: DOMUSA

Model: Evolution EV AC

Type: Installation And Operating Instructions Manual

INSTALLATION AND OPERATING INSTRUCTIONS

¬ EVOLUTION EV AC

ER-0170/1996

CGM-04/392

Thank you for choosing a DOMUSA heating boiler. From the range of

DOMUSA products you have chosen the Evolution EV AC 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’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.

CONTENTS Page

1 LIST OF COMPONENTS.........................................................................................................................................................................................................................................2

2 CONTROL ELEMENTS............................................................................................................................................................................................................................................3

3 INSTALLATION INSTRUCTIONS.........................................................................................................................................................................................................................4

3.1 LOCATION.................................................................................................................................................................................................................................................................4

3.2 HYDRAULIC INSTALLATION.....................................................................................................................................................................................................................................4

3.3 ELECTRICAL CONNECTION......................................................................................................................................................................................................................................4

3.4 OIL INSTALLATION...................................................................................................................................................................................................................................................4

3.5 REMOVAL OF COMBUSTION PRODUCTS................................................................................................................................................................................................................4

3.6 INSTALLING A SANIT STORAGE HEATER (OPTIONAL)...........................................................................................................................................................................................6

3.7 ANTI-LEGIONNAIRE’S DISEASE FUNCTION (WITH STORAGE HEATER ONLY).......................................................................................................................................................6

3.8 INSTALLING THE UNDERFLOOR HEATING KIT SRAC2/EV (OPTIONAL)............................................................................................................................................................6

4 REMOVAL OF COMBUSTION PRODUCTS......................................................................................................................................................................................................7

4.1 Ø80 COMBUSTION PRODUCT EXHAUSTION AND AIR INTAKE DUAL DUCT SYSTEM (TYPE C53).......................................................................................................................7

4.2 CHANGING FROM DUAL DUCT FUME REMOVAL TO COAXIAL FUME REMOVAL.................................................................................................................................................8

4.3 Ø80-125 CONCENTRIC HORIZONTAL DUCT FOR REMOVAL OF COMBUSTION PRODUCTS AND AIR INTAKE (TYPE

C13)..............................................................................9

4.4 Ø80-125 CONCENTRIC VERTICAL DUCT FOR REMOVAL OF COMBUSTION PRODUCTS AND AIR INTAKE (TYPE

C33)..................................................................................10

5 FILLING THE INSTALLATION............................................................................................................................................................................................................................11

6 DIGITAL DISPLAY ................................................................................................................................................................................................................................................11

7 TEMPERATURE SELECTION..............................................................................................................................................................................................................................12

7.1 SELECTING THE BOILER SET POINT TEMPERATURE.............................................................................................................................................................................................12

7.2 SELECTING THE HOT WATER SET POINT TEMPERATURE (WITH STORAGE HEATER ONLY)..............................................................................................................................12

7.3 SELECTING THE UNDERFLOOR HEATING OUTLET SET POINT TEMPERATURE (WITH SRAC2/EV KIT OPTION).............................................................................................13

8 FUNCTIONING......................................................................................................................................................................................................................................................13

8.1 FUNCTIONING IN “HEATING ONLY” MODE........................................................................................................................................................................................................13

8.2 FUNCTIONING WITH SANIT STORAGE HEATER (OPTIONAL).............................................................................................................................................................................14

8.3 FUNCTIONING WITH THE UNDERFLOOR HEATING KIT SRAC2/EV (OPTIONAL)..........................................................................................................................................14

9 ADDITIONAL FUNCTIONS................................................................................................................................................................................................................................15

9.1 PUMP ANTI-BLOCK FUNCTION.............................................................................................................................................................................................................................15

9.2 ANTI-FROST FUNCTION........................................................................................................................................................................................................................................15

9.3 BOILER PRESSURE SENSOR FUNCTION................................................................................................................................................................................................................15

9.4 TELEPHONE RELAY CONNECTION........................................................................................................................................................................................................................15

9.5 ROOM THERMOSTAT CONNECTION ....................................................................................................................................................................................................................16

9.6 ANTI-LEGIONNAIRE’S DISEASE FUNCTION (OPTIONAL) (WITH STORAGE HEATER ONLY)..............................................................................................................................16

10 E20 REMOTE CONTROL (OPTIONAL).........................................................................................................................................................................................................16

10.1 FUNCTIONING WITHOUT AN EXTERNAL SENSOR.............................................................................................................................................................................................17

10.2 FUNCTIONING WITH AN EXTERNAL SENSOR (OPTIONAL)..............................................................................................................................................................................17

10.3 FUNCTIONING WITH A DOMESTIC HOT WATER STORAGE HEATER (OPTIONAL)...........................................................................................................................................18

10.4 TELEPHONE RELAY FUNCTION ..........................................................................................................................................................................................................................18

11 SAFETY CUT-OUT SYSTEMS..........................................................................................................................................................................................................................18

11.1 TEMPERATURE SAFETY CUT-OUT......................................................................................................................................................................................................................18

11.2 BURNER CUT-OUT ..............................................................................................................................................................................................................................................18

11.3 LOW PRESSURE CUT-OUT..................................................................................................................................................................................................................................19

12 DRAINING THE BOILER...................................................................................................................................................................................................................................19

13 SWITCHING OFF THE BOILER.......................................................................................................................................................................................................................19

14 INITIAL START-UP.............................................................................................................................................................................................................................................19

15 DELIVERY AND INSTALLATION....................................................................................................................................................................................................................19

16 BOILER MAINTENANCE...................................................................................................................................................................................................................................20

16.1 CLEANING THE BOILER.......................................................................................................................................................................................................................................20

16.2 ANTI-FROST PROTECTION..................................................................................................................................................................................................................................21

16.3 BOILER WATER CHARACTERISTICS ....................................................................................................................................................................................................................21

17 TECHNICAL CHARACTERISTICS...................................................................................................................................................................................................................22

18 CIRCULATING PUMP FLOW CURVES.........................................................................................................................................................................................................23

19 DIAGRAMS AND MEASUREMENTS............................................................................................................................................................................................................23

20 CONNECTION DIAGRAM................................................................................................................................................................................................................................24

21 ELECTRICAL DIAGRAM ...................................................................................................................................................................................................................................25

22 ALARM CODES...................................................................................................................................................................................................................................................26

23 BURNER................................................................................................................................................................................................................................................................27

23.1 ASSEMBLY...........................................................................................................................................................................................................................................................27

23.2 BURNER START-UP .............................................................................................................................................................................................................................................27

23.3 ADJUSTING THE COMBUSTION CONDITIONS...................................................................................................................................................................................................27

23.4 PRIMARY AIR ADJUSTMENT...............................................................................................................................................................................................................................28

23.5 COMBUSTION LINE ADJUSTMENT.....................................................................................................................................................................................................................28

23.6 CORRECT POSITION OF ELECTRODES................................................................................................................................................................................................................28

23.7 OIL PRESSURE ADJUSTMENT.............................................................................................................................................................................................................................29

23.8 OIL SUPPLY PIPING DIAGRAMS..........................................................................................................................................................................................................................29

WARNING: CHECK PERIODICALLY THE FLEXIBLE PIPES CONDITIONS. USING KEROSENE, THEY HAVE TO BE REPLACED AT LEAST EVERY 2 YEARS.....................................29

23.9 TECHNICAL SPECIFICATIONS .............................................................................................................................................................................................................................30

23.10 OPERATING CURVES ........................................................................................................................................................................................................................................30

23.11 OIL FLOW VERSUS NOZZLE AND PUMP PRESSURE........................................................................................................................................................................................30

23.12 NOZZLES...........................................................................................................................................................................................................................................................30

23.13 ELECTRICAL CONNECTION DIAGRAM.............................................................................................................................................................................................................31

23.14 QUICK CONNECTOR.........................................................................................................................................................................................................................................31

24 FAILURES..............................................................................................................................................................................................................................................................32

25 SPARES LIST........................................................................................................................................................................................................................................................33

26 GUARANTEE CONDITIONS............................................................................................................................................................................................................................36

Evolution EV AC

1 LIST OF COMPONENTS

1.- Air drain valve.

2.- Domestic sealed burner.

3.- Heating pump.

4.- Boiler temperature sensors.

5.- Pressure sensor.

6.- Safety valve.

7.- Automatic air vent.

8.- Expansion vessel.

9.- Stainless steel condenser.

10.- Steel body.

2 CONTROL ELEMENTS

2016 18 1917

1211 151413

11. On/Off pilot light:

When this pilot light comes on, it indicates

that the boiler is switched on.

12. Alarm warning pilot light:

When this pilot light flashes, it indicates that an

alarm or boiler functioning cut-out has

occurred.

13. Digital display:

This is the boiler’s main operating display. It

shows the different boiler temperatures, the

installation pressure and the various alarm

codes.

14. Heating pilot light:

When this pilot light is on, it indicates that the

heating mode has been selected, and the boiler

is in winter mode.

15. Hot water pilot light:

When this pilot light is on, it indicates that the

hot water mode has been selected (it will only

light up if an optional storage heater has been

installed with the boiler). When only this pilot

light is on, the boiler is in summer mode.

16. Boiler temperature selector:

The boiler set point temperature can be

selected at any time. The temperature selector is

a push-in dial button. To use it, push the button

in to release it, and then push it in again to

conceal it.

17. On/Off button:

This button switches the boiler on and off.

18. Set button:

By pressing this button, the different

temperatures of the boiler can be viewed on the

digital display.

19. Mode select:

This button is for selecting the different boiler

operating modes: heating + hot water (winter

mode), or hot water only (summer mode). The

hot water function can only be selected if an

optional storage heater is installed on the boiler.

20. Hot water temperature selector:

This is used to select the hot water set point

temperature at any time (it will only switch on if

an optional storage heater is installed on the

boiler). It is a push-in dial button. To use it, push

the button in to release it, and then push it in

again to conceal it.

Evolution EV AC

3 INSTALLATION INSTRUCTIONS

The boiler must be installed by personnel authorised by the Department of Industry in accordance

with the applicable regulations and standards in force. However, the following recommendations

must be complied with when installing the boiler:

3.1 Location

The boiler must be installed in a sufficiently ventilated site. The boiler must be accessible from

above for maintenance, so it must not be installed under a fixed worktop or any other obstacle

preventing access from the top.

3.2 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 condensation pipe must lead to a drain outlet, as the Evolution boiler is a

condensation boiler and a large amount of water may be generated. Also, before starting up

the boiler, it is recommended to fill the condensation outlet tube/siphon with water, so that

the fumes do not exit through this pipe.

3.3 Electrical Connection

The boiler is ready to be connected at 220 V II to terminals 1 and 2 of terminal strip J1 (see Electrical

Connection Diagram). Remember to earth the appliance.

The boiler is also provided with two terminals on terminal strip J5 for the room thermostat

connection (see Electrical Connection Diagram). To connect the room thermostat, remove the

bridge joining the two terminals and connect the room thermostat in the same place.

3.4 Oil Installation

The Evolution boiler is supplied with a Domestic gas-oil burner

(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.

3.5 Removal of combustion products

The combustion product exhaustion ducts must be installed by qualified personnel and must

comply with current legislation and standards.

Evolution boilers are sealed oil-fired boilers, and the combustion products are therefore removed

through an outlet pipe, with a separate air intake from outside.

We recommend that the position of the outside exhaustion duct corresponds to the figures and to

the following table:

Exhaustion duct position Minimum distance

(mm)

A under a cornice 300

B between two horizontal ducts 1000

C from an adjacent window 400

D between two vertical duction 1500

E from an adjacent ventilation grille 600

F under a balcony (*) 300

G under a window 600

H under a ventilation grille 600

I from a recess in the building 300

J from a corner of the building 300

K from the floor 2500

L from a vertical or horizontal duct or outlet (**) 300

M from a frontal surface at a distance of 3 metres from the fume outlet 2000

N as above, but with an opening 3000

(*) Providing the width of the balcony is not over 2000 mm.

(**)If the materials from which the pipe is made are sensitive to the action of the flue gases, this distance should be

over 500 mm.

Note: Spanish law also stipulates that the end of the exhaustion duct must be at a distance of no less than 400 mm.

from any air intake opening, and from the wall.

IMPORTANT: All accessories used for combustion product removal and air intake are to be those

supplied by Domusa.

Evolution EV AC

3.6 Installing a Sanit storage heater (Optional)

The procedure for making the correct electrical connection of a Sanit domestic hot water storage

heater with the Evolution EV AC boiler is as follows:

- Connect a hot water temperature sensor (supplied optionally) to the sensor terminal strip J3

(terminals 13 and 14). To do this, firstly remove the resistor (Ra) which is supplied with the same

(see the "Connection Diagram").

- Insert the temperature sensor bulb in the bulb sheath in the storage heater.

- Connect the storage heater charging pump to the supply terminal strip J2 (terminals 6 and 7)

(see the “Connection Diagram").

To correctly make the hydraulic installation, carefully follow the assembly and connection

instructions enclosed with the storage heater.

3.7 Anti-legionnaire’s disease function (with storage heater only)

When the Sanit storage heater is installed with the Evolution EV AC boiler, the anti-legionnaire’s

disease function can be activated for the hot water in the storage heater.

This function must be activated by sufficiently qualified personnel. This is done by changing the

boiler model selectors, which are located on the display card inside the control panel.

Before carrying out any operations inside the boiler, switch off the electrical supply to the

appliance. To activate the anti-legionnaire’s disease function, remove the top cover from the boiler

and use a screwdriver to remove the cover of the control panel box, removing the two screws

holding it in place. The electronic display board can then be accessed, where the programming

selectors are located.

The anti-legionnaire’s disease function is selected by turning selector nº 4 to ON position (see

“Electrical Diagram").

3.8 Installing the Underfloor Heating Kit SRAC2/EV (Optional)

The procedure for correctly making the electrical connection between the Underfloor Heating Kit

SRAC2/EV and the Evolution EV AC boiler is as follows:

- Connect a flow temperature sensor (supplied with the kit) to the sensor terminal strip J3

(terminals 12 and 13). To do this, firstly remove the resistor (Rr) supplied with the same (see the

“Connection Diagram").

- Mount the temperature sensor bulb in accordance with the instructions enclosed with the kit.

- Connect the heating pump to the supply terminal strip J2 (terminals 8 and 9) (see the

“Connection Diagram").

- Connect the 3-way mixing valve motor to the supply terminal strip J2 (terminals 10 and 11) (see

the “Connection Diagram").

To correctly make the hydraulic installation, carefully follow the assembly and connection

instructions enclosed with the kit SRAC2/EV.

4 REMOVAL OF COMBUSTION PRODUCTS

4.1 ø80 Combustion product exhaustion and air intake dual duct system (type C53)

For this type of boiler, the removal of combustion products and air intake take place through

separate Ø80 mm. dual ducts. The Ø80 dual duct outlet kit, code CGAS000186, is used for this

purpose. This is the type of fume removal provided for Evolution boilers by default.

The maximum length of piping that can be installed is 20 metres, as the maximum sum of the

metres of the air intake duct and the metres of the combustion product exhaustion duct. Each 90º

elbow, or each two 45º elbows, will reduce the available length by 1 m.

It is recommended that the exhaustion duct be fitted in a slightly upwardly-inclined direction, at

around 2º - 3º, thus preventing any water and condensation from dripping out.

Dual exhaustion duct kit

∅

Code CGAS000186

1m duct

∅

Code

90º elbow ∅80

Code CGAS000147

45º elbow ∅80

Code CGAS000148

Examples of installation:

L ≤ 20 mts.

Evolution EV AC

4.2 Changing from dual duct fume removal to coaxial fume removal

The Evolution boiler has a Ø80 dual duct system for the removal of combustion products and air

intake. If you prefer the removal of combustion products to be made by means of a Ø80/125 coaxial

tube, you may use the Ø80/125 coaxial tube adaptor kit (supplied to order), code

CGAS000213.

Adaptor for coaxial pipe

∅

80/125

Code CGAS000213

The changeover may be made with two different assembly configurations:

1. Rear outlet: simply remove the combustion air intake from the boiler, unscrewing the three

screws holding it in place, mount the adaptor on the fume outlet towards the rear, and use the

flexible air inlet tube to connect it to the adaptor.

2. Side or top outlet: the procedure is the same, but to mount the adaptor kit laterally a 90º Ø80

elbow (code CGAS000147) needs to be fitted before the adaptor at the fume outlet.

The two

configurations are shown in the

figures below:

Toma de aire de combustión

Salida hacia atrás Salida lateral

Codo 90º Ø80

Combustion air intake

Side outletRear outlet

Elbow

Adaptor for coaxial pipe ∅80/125

Code CGAS000213

4.3 ø80-125 concentric horizontal duct for removal of combustion products and air intake (type

C13)

The removal of combustion products and air intake can be made using concentric Ø80 mm ducts

for the removal of combustion products and Ø125 mm ducts for the air intake, using the 1m Ø80-

125 horizontal duct kit, code CGAS000189.

The maximum length from the boiler for horizontal ducts, including the kit terminal, is 10 metres.

Each 90° elbow, or two 45° elbows, will reduce the available length by 1 metre.

It is recommended that the pipe be fitted in a slightly upwardly-inclined direction, at around 2º - 3º,

to prevent any water or condensation from dripping out.

Kit salida horizontal 1m

∅

80/125

Cod. CGAS000189

Curva 90º coaxial ∅80/125

Cod. CGAS000182

Curva 45º coaxial ∅80/125

Cod. CGAS000183

Tubo 1m coaxial ∅80/125

Cod. CGAS000184

Examples of installation:

L ≤ 10 mts.

1m ø 80/125 horizontal duct kit

Code CGAS000189

ø 80/125 90º coaxial curve

Code CGAS000182

ø 80/125 45º coaxial curve

Code CGAS000183

1m ø 80/125 coaxial duct

Code CGAS000184

Evolution EV AC

4.4 ø80-125 concentric vertical duct for removal of combustion products and air intake (type

C33)

The removal of combustion products and air intake can be made using concentric Ø80 mm ducts

for the removal of combustion products and Ø125 mm ducts for the air intake, using the Ø80-125

vertical duct kit, code

CGAS000231.

The maximum length from the boiler for vertical ducts, including the kit terminal, is 12 metres.

Each 90° elbow, or two 45° elbows, will reduce the available length by 1 metre.

Vertical outlet kit∅80/125

Cod. CGAS000231 Black tile

∅

80/125

Cod. CGAS000074

45º curve

∅

80/125

Cod.CGAS000183 90º curve

∅

80/125

Cod. CGAS000182

1m coaxial tube∅80/125

Cod. CGAS000184

Black tile ∅80/125

Cod. CGAS000075

Examples of installation:

L ≤ 12 mts.

5 FILLING THE INSTALLATION

A fill valve for filling the installation is to be provided for. The installation should be filled up using this

valve until a pressure of 1 - 1.5 bar appears on the left side of the digital display. Filling is to be done

slowly and with the cap of the automatic air drain valve

(7)

loose, so that the air is released from the

installation. The rest of the installation is also to be suitably drained using the air drain valves fitted for

this purpose. Once the installation has been filled, close the filling valve.

Evolution boilers incorporate a pressure sensor

(5)

, which controls the pressure of the installation. If

the installation drops below the minimum pressure of 0.5 bar, the boiler will not switch on and a low

pressure alarm will appear on the display ("AP").

NOTE: Switching on the boiler with no water inside could result in serious damage.

6 DIGITAL DISPLAY

The Evolution boiler is electronic and incorporates a digital display

(13)

showing the actual

temperatures, the set point temperatures and the pressure of the installation. When the display is on

standby, the pressure is indicated on the left side of the display (in bars), and the actual temperature of

the boiler on the right of the display (in ºC). By pressing the set button underneath the display, the rest

of the available display options can be browsed, as follows:

Set button

Digital display

1.5

Press the set button successively to select the different display options. When the desired option

has been selected, it will return to standby after ten seconds have elapsed.

The following table shows the different display options:

1.5 63

bar ºC

Standby. The pressure is shown on the left, and the actual boiler

temperature on the right.

T 1 63 Actual boiler temperature.

T2 45 Actual hot water temperature (with storage heater).

T3 35 Actual flow temperature of the underfloor heating installation.

(option SRAC2/EV only)

TC 70 Boiler temperature selected using the corresponding dial

(16)

A( 45 Hot water temperature selected using the corresponding dial

(20)

(with storage heater).

TR 35 Set point flow temperature for the underfloor heating installation

selected using the corresponding dial

(16)

(option SRAC2/EV only)

SP 1.5 Actual boiler pressure, measured by the Pressure Sensor

(5)

Evolution EV AC

7 TEMPERATURE SELECTION

7.1 Selecting the boiler set point temperature

TC 70

The desired boiler operating temperature is selected using the push-in button, as shown in the

picture. Press the button down gently to release it. To press it back in again, push the button until it

locks. The push-in button is turned to select the desired temperature.

"tc"

will appears on the

display and you can view the selected set point temperature. When you have selected the

temperature, push the button in again. The display will return to standby status after ten seconds.

The boiler set point temperature can also be selected by browsing with the set button until the

"tc"

option appears on the display. When it appears, turn the push-in button to select the desired

temperature.

The boiler set point temperature range that can be selected is 30 - 85 ºC. Model Evolution boilers

are condensing boilers, and so in order to obtain maximum boiler performance and energy savings,

it is therefore recommended to select a set point temperature of 55 - 70 ºC, providing the heating

system installed and the insulation conditions of your home permit this.

7.2 Selecting the hot water set point temperature (with storage heater only)

A( 45

The desired hot water temperature is selected using the push-in button, as shown in the picture.

Press the button down gently to release it, and to press it in again, push the button until it locks.

To select the desired temperature, turn the push-in button.

"AC"

will appear on the display and

the selected set point temperature can be viewed. When you have selected the temperature,

push the button in again. The display will return to standby status after ten seconds. The hot

water set point temperature range permitted is 15 - 60ºC.

The hot water set point temperature can also be selected by browsing with the set button until

the option

"AC"

appears. When this option appears on the display, turn the push-in button to

select the desired temperature.

7.3 Selecting the underfloor heating outlet set point temperature (with SRAC2/EV kit option)

TR 35

When the boiler is installed with the optional underfloor heating kit, SRAC2/EV, the desired flow

temperature of the installation can be selected using the push-in button as shown in the figure

above. Press the button down gently to release it, and to press it in again, push the button until it

locks. To select the desired temperature, turn the push-in button.

"tr"

will appear on the display and

you will see the set point temperature selected. When you have selected the temperature, push the

button in again. The display will return to standby status after ten seconds..

The installation flow set point temperature can also be selected by browsing with the set button

until

“tr”

appears on the display. Then turn the push-in button to select the desired temperature.

The set point temperature range that can be selected is 0 - 45 ºC. To obtain optimum performance

from the underfloor heating system, we recommend selecting a set point temperature of 25 - 35 ºC,

providing the heating system installed and the insulation in your home permit this.

8 FUNCTIONING

The Evolution EV AC boiler is supplied by default in “heating only” mode, for a heating installation

only. Optionally, a domestic hot water storage heater (Sanit) and/or an underfloor heating kit

(SRAC2/EV) may be installed, providing the installation with more features.

8.1 Functioning in “Heating Only” mode

1.5 63

In this mode, the desired set point temperature for the boiler should be selected, and the

temperature of the room thermostat or E20 remote control (if the appliance is equipped with

these). The burner and the heating pump will begin to function until the selected set point

temperature of the boiler is reached in the installation (or on the room thermostat, if the appliance

is equipped with one). When the temperature of the installation drops below the boiler

temperature selected, the burner will start the heating cycle up again.

Evolution EV AC

8.2 Functioning with Sanit storage heater (Optional)

The Evolution EV AC boiler may be installed together with a storage heater from the DOMUSA

Sanit range, to obtain domestic hot water. For correct installation, follow carefully the assembly

and read carefully the "Installation instructions" section of this manual.

There are two different modes of functioning. They can be selected using the mode selection

button, as shown in the figures. The selection is indicated by the two mode pilot lights on the right

of the display.

1.5 63

Winter mode

In this mode, the boiler can heat up the heating installation and produce hot water at the same

time. To select this mode, press the mode selection button until the two pilot lights

(14) (15)

come on. The burner and hot water pump will switch on. When the storage heater reaches the

hot water set point temperature selected, it is ready to heat up the heating installation,

switching on the heating pump and switching off the hot water pump. The burner stops when

the boiler reaches the boiler set point temperature selected. When the room temperature

reaches the temperature adjusted on the installation room thermostat (if there is one), the

heating pump will switch off.

Summer mode

In this mode, the boiler will provide hot water only. To select this mode, press the mode

selection button until the bottom pilot light comes on (

). The burner and hot water pump

will be switched on until the storage heater reaches the selected hot water set point

temperature.

8.3 Functioning with the Underfloor Heating Kit SRAC2/EV (Optional)

The Evolution EV AC boiler may be installed together with an underfloor heating kit, SRAC2/EV.

This kit basically consists of a motorised 3-way mixing valve and an underfloor heating installation

flow temperature sensor. To correctly install it, carefully follow the assembly and connection

instructions enclosed with the kit.

The underfloor heating installation is worked by the electronic boiler control. The temperature is

adjusted by means of the installation flow sensor, selecting the flow temperature using the boiler

adjustment control dial on the control panel. It may be adjusted between 0 and 45 ºC. In this

operating mode, the boiler set point temperature is set by the electronic control at 75ºC by default,

and the installation flow temperature can be adjusted to the set point temperature selected by

working the mixing valve.

TC 75

The boiler set point temperature can be changed by browsing with the set button until the option

“tc”

appears on the display. When it appears, push the set button in and hold it down for 5

seconds, until the symbol

"tc"

begins to flash. Then push the set button successively to increase the

boiler set point temperature. When the desired temperature has been selected, push the set button

and hold it down for 5 seconds again, until it stops flashing. The value selected will be stored in the

memory.

9 ADDITIONAL FUNCTIONS

The Evolution EV AC boiler is equipped with an electronic control for efficiently regulating automatic

boiler operation. It also includes the following additional control features:

9.1 Pump anti-block function

This feature prevents the boiler circulation pumps from blocking if the pumps have not been

started up for a long period of time. This system remains enabled while the boiler is plugged into

the mains.

9.2 Anti-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 remain active until the boiler reaches 8 ºC. This system remains on standby

while the boiler is plugged into the mains.

9.3 Boiler pressure sensor function

This function prevents boiler failure due to a low water level and excess pressure in the boiler. The

pressure is detected by a pressure sensor

(5)

, and its value appears on the control panel display. If

the pressure drops below 0.5 bar, the electronic control switches off the boiler and activates an

alarm on the display. When the boiler pressure reaches 2.5 bar, an alarm pilot light

(12)

begins to

flash to warn that the pressure is too high. In this case we recommend calling the Technical

Assistance Service, and to partially drain the boiler.

9.4 Telephone relay connection

The Evolution 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 (see Electrical

Connection Diagram). When the phone relay contact closes, the boiler switches on, and when the

relay is open, it switches off, with the anti-frost protection and pump anti-block functions

remaining activated.

Evolution EV AC

9.5 Room thermostat connection

The boiler has two terminals on terminal strip J5 for connecting a room thermostat or room timer

(see Electrical Connection Diagram). This allows the heating mode to switch off according to the

room temperature. To connect it, remove the bridge from terminal strip J5 and connect the room

thermostat in the same place.

Installing a room thermostat will optimise the functioning of the installation, 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 (room timer), it will be able to adapt the heating

system to the hours during which the installation is in use.

9.6 Anti-legionnaire’s disease function (optional) (with storage heater only)

This optional function prevents the bacteria causing legionnaire’s disease from proliferating in the

hot water accumulated in the storage heater. Every 7 days, the temperature of the water in the

storage heater is raised to 70 ºC to kill any such bacteria. This function will only be activated when

the boiler is functioning, with the master switch turned to “I”.

The boiler is supplied with this function deactivated. To enable the function, read the section

"Installation Instructions" carefully. We recommend that the operation for enabling this function is

carried out by qualified personnel.

10 E20 REMOTE CONTROL (OPTIONAL)

Together with the Evolution EV AC boiler, a remote control (E20) can optionally be supplied. This

remote control can be used to fully operate the boiler from any location within the home.

The remote control enables the hours of home comfort to be programmed, 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 hot water

and heating set point temperatures (storage heater option) at any time, and for viewing the different

boiler operation parameters. 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. With this option installed, the remote control can adjust the home comfort level

depending on the weather conditions at each particular moment, optimising fuel consumption and

the heating inside the home.

When an E20 remote control is connected to the boiler, the control of the boiler is performed

exclusively by the remote control. The different boiler temperatures that can be selected will need to

be changed using the remote control. It is easy to install, only needing 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 (see Connection Diagram). For correct installation and functioning, carefully read the

instructions enclosed with the remote control.

The following sections contain a general explanation of the different operating modes and options of

the E20 remote control.

10.1 Functioning without an external sensor

Conventional heating installation (direct circuit)

The maximum temperature for the heating circuit, hours of heating and room temperatures

desired can be selected on the remote control. The E20 will calculate the boiler temperature

necessary at each particular time, depending on the temperature inside the home, and it will

switch the heating on and off according to the heating times and room temperatures

programmed.

Installing heating with an underfloor heating kit SRAC2/EV (mixed circuit)

If the boiler has an underfloor heating kit SRAC2/EV installed, the adjustment and control of the

underfloor heating is made via the boiler control panel (see "operation with underfloor heating

kit").

The E20 remote control can be used to programme the desired heating times and room

temperatures.

10.2 Functioning with an external sensor (Optional)

If an external temperature sensor is connected to the E20 remote control, the E20 can calculate the

heating installation mode temperature in accordance with the outside weather conditions at each

particular time, with optimum adjustment of the heating installation conditions for increased home

comfort and energy savings.

Conventional heating installation (direct circuit)

The maximum temperature and an operating curve for the heating circuit, the heating times and

the room temperatures desired can be selected on the remote control (see instructions enclosed

with the E20 remote control). The E20 will calculate the boiler temperature necessary at each

particular time, depending on the temperature inside the home and the weather conditions

outside, in accordance with the operating curve selected (parameter CURVE 1 on the E20),

switching the heating on and off in accordance with the heating times and the room

temperatures programmed.

Installing heating with the underfloor heating kit SRAC2/EV (mixed circuit)

If the boiler has an underfloor heating kit SRAC2/EV installed and the control of this circuit is

activated on the E20 remote control, using the parameter CURVE 2 (see instructions enclosed

with the E20 remote control), the adjustment and control of the underfloor heating circuit flow

temperature will be performed by the remote control. The E20 will calculate the flow

temperature necessary at each particular time, depending on the temperature inside and

outside the home, in accordance with the operating curve selected (parameter CURVE 2 on the

E20 remote control). For mixed underfloor heating circuits, we recommend selecting operating

curves of under 0.8.

The boiler set point temperature will be fixed at 75 ºC and may be changed via the boiler control

panel. To change this setting, browse with the set button until the option

“tc”

appears on the

display. When it appears, press the set button and hold it down for 5 seconds until the

"tc"

symbol begins to flash. If the set button is pressed successively, the boiler set point temperature

will gradually increase. When the desired temperature has been selected, press the set button

and hold it down for 5 seconds again until it stops flashing. The value selected will be stored in

the memory.

The E20 remote control can also be used to selected the maximum heating circuit flow

temperature and programme the desired heating times and room temperature. The E20 remote

control will switch the heating on and off according to the heating times and room

temperatures programmed.

Evolution EV AC

NOTE: For mixed underfloor heating circuits, we recommend selecting a maximum flow

temperature of NO HIGHER THAN 45 ºC, in order to protect the underfloor heating

installation from overheating.

10.3 Functioning with a domestic hot water storage heater (Optional)

When the boiler is installed with a connected hot water supply storage heater, the E20 remote

control can be used to select up to 2 hot water temperatures and the hot water times desired. The

E20 remote control will adjust the hot water temperature of the storage heater at each particular

time and switch the hot water on and off in accordance with the times programmed.

The E20 remote control also has an option for activating an anti-legionnaire’s disease bacteria

function (see instructions enclosed with the E20 remote control).

10.4 Telephone relay function

The E20 remote control is designed to be connected to an external telephone relay. If a telephone

relay is connected to it, the heating and hot water can be switched on and off from any location

anywhere in the world, by making a telephone call (see instructions enclosed with the E20 remote

control).

11 SAFETY CUT-OUT SYSTEMS

The boiler electronic control system may activate the boiler safety cut-out system, as shown below.

When any of the cut-outs are activated, the boiler will switch off, an alarm code will flash on the

display and the red alarm warning pilot light will start to flash.

AL AT

If any of the cut-outs below should occur repeatedly, switch off the boiler and call your nearest

official technical assistance service.

11.1 Temperature safety cut-out

When this cut-out occurs, the code "At" (temperature alarm) will

begin to flash on the digital display

(13)

and the alarm warning

pilot light will flash on the control panel. The burner will switch

off and stop heating the installation.

This occurs when the boiler exceeds a temperature of 110 ºC. To unblock it, wait until the boiler

drops to below 100 ºC and press the button on the safety thermostat, located inside the boiler on

the underside of the electric box, after first having removed the button cover.

11.2 Burner cut-out

When this cut-out occurs, the code "AQ" (burner alarm) will

begin to flash on the digital display

(13)

and the alarm warning

pilot light will flash. The burner will switch off and stop heating

the installation.

This occurs as a result of an anomaly in the burner

(2)

or in the

fuel installation. To unblock it, press the illuminated button that lights up on the burner.

AL AT

bar ºC

AL AQ

bar ºC

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DOMUSA Evolution EV AC Installation And Operating Instructions Manual

Brand: DOMUSA

Model: Evolution EV AC

Type: Installation And Operating Instructions Manual

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DOMUSA Evolution EV AC Installation And Operating Instructions Manual

DOMUSA Evolution EV AC Installation And Operating Instructions Manual

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