Unical MODULEX EXT Series Specifiche tecniche

ENGLISH

100 - 116 - 150 - 200 - 250 - 300 - 350

MODULEX EXT

INSTALLATION AND MAINTENANCE INSTRUCTIONS

https://www.unicalag.it/prodotti/professionale-300/commercial-condensazione-alluminio/347/modulex-ext

Provisions for proper disposal of the product

After decommissioning, this appliance must not be disposed of as mixed urban waste.

Separate waste collection is mandatory for this type of waste, in order to allow the recovery and reuse of the

materials making up the appliance.

Please contact operators authorised for the disposal of this type of appliances

Incorrect management of waste and of its disposal has potential negative e󰀨ects on the environment and human health

The symbol on the appliance, represents the prohibition to dispose of the product as mixed urban waste.

Installation instructions Technical Features General information

Maintenance instructions

ENGLISH

4 INSPECTION AND MAINTENANCE................................................................................................................................42

4.1 Inspection and maintenance instructions..................................................................................................................42

4.2 Wiring diagram..........................................................................................................................................................48

3 INSTRUCTIONS FOR THE INSTALLER .........................................................................................................................16

3.1 General warnings......................................................................................................................................................16

3.2 Installation rules ........................................................................................................................................................16

3.3 Preventive system verication and adjustment operations .......................................................................................16

3.4 Package and Weights ..............................................................................................................................................17

3.5 Positioning in boiler room..........................................................................................................................................18

3.6 Flue gas exhaust pipe connection.............................................................................................................................19

3.7 Connection reversibility.............................................................................................................................................20

3.8 Connection................................................................................................................................................................21

3.9 Filling and emptying the system................................................................................................................................23

3.10 Electrical connections ..............................................................................................................................................24

3.11 Commissioning..........................................................................................................................................................33

3.12 Measurement of combustion e󰀩ciency during installation........................................................................................34

3.12.1 Activation of the calibration function...............................................................................................................34

3.12.2 Positioning the sensors..................................................................................................................................34

3.13 Burner pressure adjustment......................................................................................................................................35

3.14 Control panel / emergency operation and safety devices .........................................................................................37

3.15 Programming operating parameters .........................................................................................................................38

3.16 Release and reset error codes..................................................................................................................................40

Attention: this manual contains instructions for the exclusive use of the professionally qualied installer and/or maintenance

technician in compliance with current legislation.

The user is NOT qualied to intervene on the boiler.

The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from failure to comply with

the instructions contained in the manuals supplied with the boiler

2 TECHNICAL SPECIFICATIONS{J}AND DIMENSIONS.................................................................................................10

2.1 Technical features ....................................................................................................................................................10

2.2 Main components view and dimensions ..................................................................................................................10

2.3 Dimensions ..............................................................................................................................................................12

2.4 Operating data .........................................................................................................................................................13

2.4.1 Technical data according to ErP Directive ......................................................................................................14

2.4.2 Determination of the primary circuit pump or boiler pump ..............................................................................15

1 GENERAL INFORMATION.................................................................................................................................................4

1.1 General warnings.......................................................................................................................................................4

1.2 Symbols used in the manual......................................................................................................................................5

1.3 Appropriate use of appliance .....................................................................................................................................5

1.4 Information for system manager ................................................................................................................................5

1.5 Safety warnings .........................................................................................................................................................6

1.6 Technical data plate ...................................................................................................................................................7

1.7 Water treatment .........................................................................................................................................................8

1.8 Boiler antifreeze protection ........................................................................................................................................9

1GENERAL INFORMATION

Any product repairs must be performed solely by personnel

authorised by Unical, using original spare parts only. Failure to

comply with the above can compromise the safety of the appli-

ance and void the warranty.

To guarantee appliance e󰀩ciency and its correct operation,

yearly maintenance must be performed by qualied personnel.

Should you decide not to use the appliance, parts entailing

potential sources of hazard must be made safe.

Before commissioning an appliance that has not been used,

wash the domestic hot water production system, making the

water ow until it has been fully replaced.

Should the appliance be sold or transferred to a new owner or

if you move and leave the appliance, always make sure that the

instruction manual accompanies it so that the new owner and/

or installer can refer to it.

Only original accessories must be used for all appliances with

optional features or kits (including electric ones).

This appliance is intended solely for the use for which it was

expressly designed.

Any other use is to be considered improper and therefore dan-

gerous (*)

(see 1.7 Water Treatment).

1.1 -GENERAL WARNINGS

The instruction manual is an integral and essential part of the

product and must be kept by the user.

Read the warnings contained in this instruction manual carefully

as they provide important guidelines regarding installation, use

and maintenance safety.

Keep the manual with care for further consultation.

Your appliance must be installed and serviced in compliance with

the standards in force according to the manufacturer instructions,

up to standard and by legally qualied and certied personnel.

Systems for the production of domestic hot water MUST be

constructed entirely with compliant materials.

By professionally qualied personnel we mean: personnel with

specic technical skill in the eld of heating system components

for civil use, domestic hot water production and maintenance.

Personnel must have the qualications provided for by current

legislation.

Incorrect installation or improper maintenance can cause dam-

age to persons, animals or objects for which the manufacturer

is not responsible.

Before performing any cleaning or maintenance, disconnect the

appliance from the energy mains by acting on the switch of the

system and/or through the specic cut-o󰀨 devices.

Do not obstruct the terminals of the intake/exhaust ducts.

In the event of failure and/or malfunctioning of the appliance,

switch it o󰀨 and do not try to repair it or intervene on it directly.

Contact only personnel qualied in compliance with law.

ATTENTION

THE THERMAL UNIT MUST BE INSTALLED IN SUCH A WAY AS TO AVOID, IN

THE ENVISAGED OPERATING CONDITIONS, THE LIQUID IT CONTAINS

FROM FREEZING AND PREVENT COMMAND AND CONTROL PARTS FROM

BEING EXPOSED TO TEMPERATURES BELOW -15°C AND ABOVE +40°C.

THE THERMAL UNIT MUST BE PROTECTED FROM CLIMATIC/

ENVIRONMENTAL VARIATIONS WITH:

- The insulation of hydraulic pipes and condensation drain

- The use of specic antifreeze products in the hydraulic system.

1.3 - APPROPRIATE USE OF APPLIANCE

The boiler has been constructed according to the current level of engineering and acknowledged technical

safety rules.

Nonetheless, improper use could result in hazards for the safety and life of the user or other persons, i.e.

damage to the appliance or other property.

The appliance is designed to work in heating systems, with hot water circulation, for the production of

domestic hot water.

Any other use shall be considered as misuse.

UNICAL will not be held liable for any damage resulting from improper use.

Use according to the intended purposes also includes strict compliance with the instructions in this manual.

The user must be instructed on use and operation of the heating system, in particular:

• Deliver these instructions to the user, as well as other documents concerning the appliance inserted in the envelope

inside the packaging. The user must keep this documentation safe for future reference.

• Inform the user about the importance of the air vents and the ue gas exhaust system, highlighting their essential

features and the absolute prohibition of modifying them.

• Inform the user on how to control the system's water pressure as well as operations to restore it.

• Inform the user on correct temperature control, control units/thermostats and radiators for saving energy.

• Please note that, in compliance with the standards in force, the inspection and maintenance of the appliance must

be carried out in compliance with the regulations and frequency indicated by the manufacturer.

• Should the appliance be sold or transferred to a new owner or if you move and leave the appliance, always make

sure that the instruction manual accompanies it so that the new owner and/or installer can refer to it.

The manufacturer will not be held liable in the event of damage to persons, animals or objects resulting from

failure to comply with the instructions contained in this manual.

1.4 -INFORMATION FOR THE SYSTEM MANAGER

1.2 - SYMBOLS USED IN THE MANUAL

When reading this manual, pay special attention to the parts marked by the symbols shown:

NOTE!

For further details refer to the

Technical Information:

at the address indicated

on page 2.

NOTE!

Tips

for the user

OBLIGATION!

wear protective

gloves

ATTENTION!

Possible dangerous

situation for the product

and the environment

DANGER!

Serious danger

to safety

and health

DANGER!

Danger of burns!

1.5 - SAFETY WARNINGS

ATTENTION!

The appliance must not be used by children.

The appliance may be used by adults and only after carefully reading the operating

instructions manual for the user / person in charge.

Children must be supervised so they do not play or tamper with the appliance.

ATTENTION! The appliance must be installed, adjusted and maintained by profes-

sionally qualied personnel, in compliance with the standards and provisions in force.

Incorrect installation can cause damage to persons, animals and property for which

the manufacturer cannot be held liable.

DANGER! NEVER attempt performing maintenance or repairs on the boiler on your

own initiative.

Any work must be done by professionally qualied personnel. We recommend stip-

ulating a maintenance contract.

Insufcient or irregular maintenance can jeopardise the operating safety of the appli-

ance and cause damage to persons, animals and property for which the manufacturer

will not be held liable.

ATTENTION! Modifying parts connected to the appliance (upon

completing appliance installation)

Do not modify the following parts:

- the boiler

- the gas, air, water and electricity supply lines

- the ue gas pipe, the safety valve and the exhaust pipe

- the construction parts which affect the operating safety of the appliance

ATTENTION!

To tighten or loosen the screwed ttings, use only appropriate xed spanners.

Incompliant use and/or inappropriate tools can cause damage (e.g. water or gas

leakage).

ATTENTION!

Indications for propane gas-red appliances

Make sure that the gas tank has been deaerated before installing the appliance.

For state-of-the-art tank venting, contact the LPG supplier or person qualied in

compliance with the legal requirement.

If the tank has not been professionally deaerated, ignition problems could arise. In

that case, contact the supplier of the LPG tank.

DANGER Gas smell Should a smell of gas be perceived, follow these safety guide-

lines:

- do not turn electrical switches on or off

- do not smoke

- do not use the telephone

- close the gas shut-off valve

- ventilate the area where the gas leakage has occurred

- inform the gas supplier or a company specialised in the installation and mainte-

nance of heating systems.

DANGER! Explosive and easily ammable substances

Do not use or store explosive or easily ammable materials (e.g. petrol, paints, paper)

in the room where the appliance is installed.

General information

ENGLISH

1.6 -TECHNICAL DATA PLATE

KEY:

1 = CE monitoring body

2 = Type of boiler

3 = Boiler model

5 = (S.N°) Serial Number

6 = P.I.N. Product Identication Number

7 = Types of approved ue gas exhaust congurations

8 = (NOx) NOx Class

A = Heating circuit characteristics

9 = (Pn) Effective nominal output

10 = (Pcond) Effective output in condensation

11 = (Qn) Maximum thermal ow rate

12 = (Adjusted Qn) Adjusted for rated heat output

13 = (PMS) Max. heating operating pressure

14 = (T max) Max. heating temperature

B = Domestic hot water circuit characteristics

15 = (Qnw) Rated heat output in domestic hot water function

(if different than Qn)

16 = (D) Specific D.H.W. flow rate according to EN625-

EN13203-1

19 = (PMW) Max. domestic hot water operating pressure

20 = (T max) Max. domestic hot water temperature

C = Electrical characteristics

21 = Electrical power supply

22 = Consumption

23 = Protection rating

D = Countries of destination

24 = Direct and indirect countries of destination

25 = Gas category

26 = Supply pressure

E = Factory settings

27 = Adjusted for gas type X

28 = Space for national brands

G = ErP

29 = Seasonal energy efciency to heat the room

30 = Seasonal water heating energy efciency.

The CE Marking

certies the appliance compliance with the essential safety re-

quirements dened in the applicable European Directives and

Regulations and that its operation meets the technical standards

of reference.

The CE marking is a󰀩xed on each individual appliance by a

special label.

The EC declaration of conformity, issued by the Manufacturer

pursuant to international regulations, can be found in the docu-

mentation accompanying the product.

The technical data plate can be found under

the casing, on the front xing crosspiece. ITS

DUPLICATE is placed next to the temperature

control unit.

DANGER! Do not use the appliance to support any object.

Specically, do not place any liquid containers (Bottles, Glasses, Containers or

Detergents) on top of the boiler.

If the appliance is installed inside a box, do not insert or place other objects inside it.

ATTENTION (*) see general warnings 1.1:

The heating only models are NOT suitable

for the production of water for human con-

sumption according to Ministerial Decree

D.M. 174/2004.

ATTENTION!

ANY DAMAGE TO THE BOILER CAUSED BY

THE FORMATION OF SCALING OR BY COR-

ROSIVE WATER WILL NOT BE COVERED BY

THE WARRANTY.

VALUE MIN MAX

PH 6.5 8.5

Hardness [°fr] 9 15

NOTE!

Further details in the section

‘‘Technical Information’’ on the boiler

page of the www.unicalag.it website

1.7 - WATER TREATMENT

Feed water treatment prevents problems and

maintains the functionality and e󰀩ciency of the

generator over time.

The ideal water pH in heating systems must be

within:

To minimise corrosion, it is crucial to use a cor-

rosion inhibitor; in order for it to work properly,

the metal surfaces must be clean.

(see system protection ACCESSORIES sect. in

domestic price list)

Technical Features

ENGLISH

1.8 - BOILER ANTIFREEZE

PROTECTION

It is activated by default

This protection can trigger only if the electricity

and gas supplies are connected.

If one of the two is not available and upon reset

11 (SM) a temperature level between 2 and

5°C is detected, the appliance will behave as

described in the table below, pos 2.

The heating system can be protected e󰀨ectively

from frost by using antifreeze products with

inhibitor for heating systems (specic for multi-

metal)

Do not use car engine antifreeze products as

they could damage the water gaskets.

ANTIFREEZE FUNCTION

Supplies 11 - SR (*) Status

antifreeze func-

tion

Actions

Electric Gas

1ON ON < 7 °C ON - Burner and Pump ON until T > 15°C

ON OFF

< 5 ÷ 5 °C OFF

FAULT SIGNAL CODE 16

(see par. 4.4 ERROR CODES).

Ignition inhibited.

OFF ON OFF Ignition inhibited.

OFF OFF OFF Ignition inhibited.

(*) SR Sensor par. 2.2

2TECHNICAL FEATURES AND DIMENSIONS

2.1 - TECHNICAL FEATURES

NOTE!

Further details in the section

‘‘Technical Information’’ on the boiler

page of the www.unicalag.it website

2.2 - INTERNAL VIEW WITH THE INDICATION OF THE MAIN COMPONENTS

KEY

No. C.E. S.E. Description

1 Uy Control panel

2 VG Gas valve

3 Burner cover

4 E. RIL. Ignition electrode

5 E. ACC. Detection electrode

6 SR Local heating sensor

7 TL Limit Thermostat

8 Burner

9Silicon Aluminium Heat Exchanger

10 SL Condensate level sensor

11 Condensate collection pan /

Chimney tting

12 Frame

13 Condensation drainage outlet

14 Drain valve

15 SRR Global Return Sensor

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