Winterwarm DXA75 Manuel utilisateur

DXA - en - v2.0 - 12 / 2019

INSTALLATION MANUAL

AIR HEATER

TYPE DXA

Content

1 Introduction 3

1.1 Symbols used in this manual 3

1.2 Warranty 3

2 Safety instructions 3

2.1 Installation 3

2.2 Use 3

2.3 Maintenance & Cleaning 4

2.4 Children and vulnerable users 4

3 Technical speciﬁcations 5

3.1 Performance 5

3.2 Gas types 5

3.3 Dimensions 7

4 Installation 8

4.1 Preparation 8

4.2 Positioning the air heater 8

4.3 Gas type & connection 8

4.4 Electrical connection 9

4.5 Room thermostat 9

5 Flue systems 11

6 Operating the air heater 12

6.1 Burner cycle 12

6.2 Minimum ﬁring time 12

6.3 Summer ventilation 12

6.4 Overheating protection 12

6.5 Air passage check 12

6.6 Gas supply pressure 12

7 Commissioning the air heater 13

7.1 Adjusting the settings 13

7.2 Commissioning the air heater 13

8 Combustion settings 15

8.1 Adjusting the burner settings 15

8.2 Converting to another gas type 16

9 Troubleshooting 17

9.1 Volatile lock outs 17

9.2 Temporary errors 17

9.3 Warnings 17

9.4 Instructions 18

9.5 Further troubleshooting 19

10 Maintenance 19

10.1 Preparation 19

10.2 Basic maintenance 19

10.3 Maintenance of the burner unit 19

10.4 Extensive maintenance in poultry sheds 20

11 Electrical wiring diagram 21

12 Exploded view and spare parts 22

13 Declaration of conformity 23

3INSTRUCTION MANUAL AIR HEATER TYPE DXA

1 Introduction

This manual is intended for the gas, electrical and

mechanical installer.

This document gives instructions on how to use and

maintain the air heater. It is most important to follow the

instructions in this document for safe operation of this air

heater.

It is important to read this document before starting the

installation process. Store this document close to the air

heater for quick reference.

1.1 Symbols used in this manual

DANGER! Indicates a dangerous situation that would lead

to death or severe injury.

WARNING! Indicates a potentially dangerous situation

that could lead to death, severe injury or serious product

damage.

CAUTION! Indicates a potentially dangerous situation

that could lead to injury or product damage.

NOTICE Indicates important information that is not

directly related to safety.

1.2 Warranty

NOTICE Using, installing or maintaining this air heater in

any other way than described in this manual may cause

damage that voids the warranty.

NOTICE Failing to follow the safety instructions in this

manual can lead to damage to the air heater or the

installation and void the warranty.

2 Safety instructions

Always follow the safety instructions in this chapter when

installing, using or performing maintenance on this air

heater:

2.1 Installation

CAUTION! This air heater must be installed and

maintained by an authorized, qualiﬁed and competent

installer, using calibrated equipment.

NOTICE This air heater must be installed and maintained

in accordance with this manual, national and local building

regulations and local health and safety regulations.

2.1.1 Protection against dust

CAUTION! Cover the air heater while spreading sawdust

on the ﬂoor. This prevents large amounts of dust from

accumulating on the heater.

CAUTION! The air heater can be used in a dusty

environment (e.g. a poultry shed) if they are cleaned and

maintained more frequently.

2.1.2 Temperature

CAUTION! Do not install the heater in places where the

temperature can rise above 40°C. Higher temperatures

cause the internal components to degrade much faster.

2.1.3 Corrosive vapours

WARNING! Do not install the air heater in areas that

contain any corrosive or explosive vapours. Corrosive

vapours (e.g. containing Chlorine) that are sucked into the

air intake will cause corrosion of the heat exchanger and a

leakage of condensate and ﬂue gas. This is also the case

for the room thermostat.

2.2 Use

CAUTION! Make sure the area around the air heater is

dry when performing maintenance on the air heater.

CAUTION! Always close the doors and inspection hatches

of the air heater, except when adjusting and checking the

appliance.

2.2.1 Maximum CO2concentrations

This air heater uses oxygen from the surrounding air for

the combustion process. CO2is formed and emitted as a

result. Too much CO2in the air may be harmful to people,

animals and crops.

DANGER! Never allow the CO2concentration to rise

above the values shown in the table below!

Maximum CO2concentration

Poultry shed 1% 10,000 ppm

Greenhouse 0.3% 3,000 ppm

DANGER! This air heater may emit carbon monoxide

(CO) when the oxygen level in the surrounding air is too

low. Carbon monoxide is extremely dangerous. Ensure

sucient ventilation to prevent this from happening.

WARNING! The minimal ventilation requirements for a

room in which this air heater is installed is 1000 m3/h for

each 100 kW of installed power.

2.3 Maintenance & Cleaning

Frequent maintenance and cleaning of the air heater is

necessary to ensure safe and proper operation. Failure

to do so could lead to damage to the heater or its

surroundings and void the warranty.

CAUTION! Air heaters installed in a dusty and/or wet

environment must be maintained and cleaned more

frequently.

CAUTION! Air heaters installed in poultry sheds must be

maintained and cleaned after every breeding cycle.

2.3.1 Protection from water (IP class)

WARNING! Never use water when cleaning electrical

parts.

This air heater is protected against splash water and has

an IPX4B classiﬁcation.

WARNING! Do not use a pressure washer to clean parts

that contain electronics, such as the electric motor or the

machine cover.

2.3.2 Disinfecting ﬂuids

CAUTION! Some aggressive disinfection ﬂuids can

damage the heater. When using such ﬂuids, cover the

heater while disinfecting the shed.

2.4 Children and vulnerable users

WARNING! This air heater can be used by children aged

8 years and above and by persons with reduced physical,

sensory or mental capabilities or lack of experience and

knowledge, if they are supervised or instructed concerning

use of the appliance in a safe way and understand the

hazards involved.

WARNING! Children shall not play with the air heater.

WARNING! Children shall not clean and maintain this air

heater without supervision.

5INSTRUCTION MANUAL AIR HEATER TYPE DXA

3 Technical speciﬁcations

3.1 Performance

Technical speciﬁcation Unit Type DXA v4.1

DXA75 DXA100 DXA120

Net nominal heat input kW 75.0 99.8 120

Heat output kW 75.0 99.8 120

Air output m3/h 6000 6000 7000

Throw horizontal m 40 40 45

Gas connection G” 3/4" 3/4" 3/4"

Electrical connection (50 Hz) V 230 230 230

Electrical power consumption kW 0.55 0.55 0.8

Stand-by electrical power

consumption

kW 0.004 0.004 0.004

Electrical current (max.) A 2.8 2.8 3.8

Protection class - IPX4D

Pressure switch point mbar 15 15 15

Sound level (at 8 m) dBA 79 79 81

Thermostat connection - 2-wire low voltage communication bus or ON/OFF

Weight kg 40 40 45

3.2 Gas types

3.2.1 Natural gas G20

Speciﬁcation Unit Natural gas G20

Nominal supply pressure mbar 20

Supply pressure (min. - max.) mbar 17-25

Gas category - II2H3B/P

DE: II2ELL3B/P

BE: I2Er

FR: II2Er3B/P

NL: II2EK3B/P

Pressure switch point mbar 15

Class - A3

Speciﬁcation Unit DXA75 DXA100 DXA120

Gas consumption m3/h 7.9 10.5 12.6

Burner injectors n x Ømm 1x 8.5 1x 10.5 1x 12.0

Burner pressure mbar 8.0 7.0 7.0

3.2.2 Natural gas G25

Speciﬁcation Unit Natural gas G25.3 (NL)

Natural gas G25 (BE/DE/FR)

Nominal supply pressure mbar 25

Supply pressure (min. - max.) mbar 20-30

Gas category - NL: II2EK3B/P

DE: II2ELL3B/P

BE: I2Er

FR: II2Er3B/P

Class - A3

Speciﬁcation Unit DXA75 DXA100 DXA120

Gas consumption m3/h 8.9 11.8 14.2

Burner injectors n x Ømm 1x 8.5 1x 10.5 1x 12.0

Burner pressure mbar 11.5 9.5 10.0

3.2.3 Butane / LPG G30

Speciﬁcation Unit Butane / LPG G30

Nominal supply pressure mbar 30 / 50

Supply pressure (min. - max.) mbar 20-50

Gas category - II2H3P B/P

NL: II2EK3B/P

DE: II2ELL3B/P

BE: I3B/P

FR: II2Er3B/P

PL: II2ELwLs3B/P

Class - A3

Speciﬁcation Unit DXA75 DXA100 DXA120

Gas consumption kg/h 6.0 8.0 9.5

Burner injectors n x Ømm 1x 5.85 1x 6.85 1x 7.8

Burner pressure mbar 10.0 10.0 8.8

7INSTRUCTION MANUAL AIR HEATER TYPE DXA

3.2.4 Propane G31

Speciﬁcation Unit Propane G31

Nominal supply pressure mbar 30 / 50

Supply pressure (min. - max.) mbar 20-50

Gas category - II2H3P B/P

NL: II2EK3B/P

DE: II2ELL3B/P

BE: I3B/P

FR: II2Er3P

PL: II2ELwLs3B/P

Class - A3

Speciﬁcation Unit DXA75 DXA100 DXA120

Gas consumption kg/h 5.9 7.9 9.5

Burner injectors n x Ømm 1x 5.85 1x 6.85 1x 7.8

Burner pressure mbar 13.0 13.0 12.0

3.3 Dimensions

The dimensions of this air heater can be found in ﬁgure 1.

410

220

655

540

910

1230

Figure 1 - Dimensions of the DXA

4 Installation

4.1 Preparation

Before installation, please use the data badge to check:

• if the heater is in accordance with the order;

• if the heater is suitable for the local present

provisions (gas type, gas pressure, electrical supply

etc.)

Before leaving the factory, the air heater has been tested

for safety and has been set to the operating settings. It has

been conﬁgured for the type of gas that is stated on the

data badge. Should there be any doubt about the settings

that apply to your situation, please contact your supplier.

4.1.1 Standards

NOTICE The installation must comply with all applicable

local and national standards.

NOTICE The air heater must be installed in accordance

with the relevant requirements of the Gas Safety

regulations, Electrical installation regulations and or other

local regulations that may apply.

For United Kingdom only:

NOTICE The air heater must be installed in accordance

with the relevant requirements of the Gas Safety

regulations, Electrical installation regulations and or other

local regulations that may apply (e.g. The Institute of Gas

Engineers IGE UP-1 and 2, BS6230, BS5440 building

regulations and the IIE regulations that incorporate the gas

safety regulations).

4.2 Positioning the air heater

Keep the following requirements in mind when choosing a

location to install your air heater:

WARNING! Never install an air heater close to ﬂammable

materials.

• Keep sucient distance between the heater and

any obstructions. This is both for safety reasons

and to allow access for service and maintenance

(ﬁgure 2).

• Make sure the air ﬂow to and from the heater is

free from obstacles at least 5 metres in front of the

heater. Also make sure the air intake is free from

obstacles.

• Make sure enough space remains to open the door

of the air heater.

• Make sure the wall can support the air heater.

Figure 2 - Minimum clearances around the air heater

4.2.1 Orientation

• Install the heater horizontally without an inclination

(ﬁgure 3).

Figure 3 - A correct and incorrect horizontal orientation

4.3 Gas type & connection

The unit is suited for natural gas, propane or butane (LPG).

The speciﬁc gas type that a heater is set up for can be

found on the packaging labels and on the heater badge.

The heater can be converted to another gas type. Contact

your supplier for more information.

The working and standing supply pressure must be

a minimum of 17 mbar, and a maximum of 50 mbar,

measured at the inlet pressure nipple of the gas control in

the heater.

NOTICE The supply line’s manual isolation valve must be

placed within reach of the heater.

NOTICE All gas supply lines must be mounted without any

mechanical tension.

NOTICE Always clean the inside of a gas supply line

before connecting it to the air heater. Place a gas ﬁlter in

the supply line when needed.

CAUTION! When using pressures above 60 mbar to test

the supply lines, always close the manual isolation valve of

the air heater.

9INSTRUCTION MANUAL AIR HEATER TYPE DXA

For United Kingdom only:

The supply line for gas must comply with the Gas

Engineers publications UP-1 and UP-2, as well as with BS

6891.

4.4 Electrical connection

The electrical installation must comply with local and

national requirements as well as IEE regulations.

4.4.1 Power supply

The air heater requires an earthed power supply of 230 V/

AC. A supply of 400 V/AC + Neutral is optional. The control

circuit is a two wire low voltage bus communication.

Figure 4 - The air heater's connection clamps

A supply cord with a connection plug is supplied with the

air heater.

NOTICE Make sure you do not damage the supply cord. A

damaged cable needs to be replaced by a qualiﬁed person

immediately.

4.4.2 Fuse

One fuse is present on the air heater’s control board (see

the electrical wiring diagram in §11).

• When replacing this fuse, always use one of the

same type (5AT).

4.5 Room thermostat

The air heater can be controlled in two ways:

• by an ON/OFF signal;

• through a bus communication system with an

external interface.

4.5.1 Installation requirements

Following these requirements when placing the thermostat

to ensure the heater functions correctly:

• Make sure that air can circulate around the

thermostat.

• Make sure the sun does not shine directly upon the

thermostat.

• Do not place the thermostat on a cold wall.

• Place the thermostat on an inner wall free from

draught.

• Never place the thermostat within the throw of the

heater.

• Never mount the thermostat near the aerials of

internal communication networks. These emit

radiation that can disturb the thermostat. Keep

several meters distance.

In all cases, the communication between the heater

and the thermostat is based on a two wire, low-voltage

connection. (see the electrical wiring diagram in §11).

Follow these instructions to prevent malfunction of the

installation and damage to the thermostat or air heater:

• Use a cable with the following speciﬁcations:

–Signal cable.

–Shielded and twisted.

–Minimum dimensions: 1 x 2 x Ø0,8 mm2.

–Maximum length: 200 m.

CAUTION! Keep the thermostat cable separated from the

mains cables.

CAUTION! Connect the cable’s earth shield only to the

earth terminal inside the air heater. Do not connect the

other end of the cable’s earth shield.

NOTICE A cable with a thickness of less than 0.8 mm will

result in a poor signal.

NOTICE A cable that is not shielded and twisted may

result in a disturbed communication in an EMC-unfriendly

environment.

4.5.2 Bus communication system installation

To connect the air heater to a bus communication system,

do the following:

1. Connect the two control wires to terminals 4 and

5 (see ﬁgure 5 or the electrical wiring diagram in

§11).

2. Set the S1 and J14 switches on the control unit as

follows (ﬁgure 6/7):

a. Set S1 to 1.

b. Set J14 to 1.

NOTICE The air heater must be switched o when setting

the switches. Otherwise the settings will have no eect.

4567

Bus com

Figure 5 - Bus communication connection

1 2 3 4 5 6 7 8

1 0

S1 J14

Figure 6 - Positions of the S1 and J14 switches

Figure 7 - Location of the S1 and J14 switches

4.5.3 Installation of multiple heaters on one control unit

An MTC or MTS room thermostat, or interface module can

control up to 8 air heaters. To connect the air heaters, do

the following (ﬁgure 8):

NOTICE This functionality does not apply to an ON/OFF

thermostat.

1. Connect the two wires of the thermostat to termi-

nals 4 and 5 of the ﬁrst air heater.

2. Connect the ﬁrst air heater to the second air heater.

3. Repeat for each subsequent air heater.

PE L5

N 5

22°C

PE L

123...8

22°C

Neutal

4 5

Neutal

4 5

Neutal

4 5

1 2 3 4 5 6 7 8

1 0

1 2 3 4 5 6 7 8

1 0

S1 J14

1 2 3 4 5 6 7 8

1 0

Figure 8 - Connection of multiple air heaters to a

modulating room thermostat

Each air heater needs an unique number to be recognised

by the room thermostat. This number can be set with the

J14 switch on the control unit of each air heater:

1. Set the S1 and J14 switches on the control unit as

follows (ﬁgure 9):

a. Set the S1 switch of the ﬁrst air heater to 1.

b. Set the S1 switch of the other air heaters to 2.

c. Set the J14 switch of the ﬁrst air heater to 1.

d. Set the J14 switch of the second air heater to

2, etc.

1 2 3 4 5 6 7 8

1 0

S1 J14

1 2 3 4 5 6 7 8

Figure 9 - Positions of the S1 and J14 switches for the

ﬁrst three air heaters in a system

NOTICE If the J14 switch of more than one air heater is

set to the same number, the system will not work.

NOTICE The air heater must be switched o when setting

the switches. Otherwise the settings will have no eect.

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