Winterwarm DXA HEATER 75, DXA HEATER 100, DXA HEATER 120 Instruction Manual

Instruction manual

DXA heater

pag

e 1

Inst

ruction manual

DXA Heater

Ver GB 50

3a

YOU MUST READ THIS DOCUMENT BEFORE COMMENCING INSTALLATION.
INSTRUCT THE USER ONCE TAKEN INTO USE AND KEEP THIS DOCUMENT
NEAR THE APPLIANCE

Date: 01

-09-

2009

Version: GB 50

3a
Appliances for GB
Natural gas, Propane, Butane, LPG

Instruction manual

DXA heater

pag

e 2

Foreword

This installation and user

manual

is intended mainly for the gas, oil and electrical fitter. It also

provides instructions for the user and for the

maintenance of the air heater. To use this air

heater in a safe and effective way, it is strictly essential that this manual is used correctly.

Contents:

Pag

e

1

ABOUT THIS MANUAL

3

1.1

G

UARANTY

3

2

SAFETY INSTRUCTIONS AND PRECAUTIONS

3

2.1

K

EY TO SY

MBOLS

3

2.2

S

YMBOLS ON THE APPLIANCE

3

2.3

W

ARNINGS

3

2.4

PRE-

CHECK

. 4

2.5

S

AFETY PRECAUTIONS

4

2.6

W

ATER AND CHEMICAL SU

BSTANCES

5

2.7

U

SE IN A GREENHOUSE

5

2.8

U

SE IN A POULTRY SHED

5

3 INTRODUCTION DXA HEA

TER

5

4

INSTALLATION

6

4.1

M

OUNTING THE HEATER

6

4.2

G

AS CONNECTION

6

4.3

E

LECTRICITY SUPPLY

7

4.4

I

NTERFACE UNIT

; 8

4.5

C

HECKS BEFORE TAKEN I

NTO OPERATION

8

5

FUNCTION OF THE HEATER 9

5.1

F

UNCTION BUTTON ON TH

E HEATER

9

5.2

H

EAT DEMAND

9

5.3

DELAYED START 9

5.4

V

ENTILATION

10

5.5

T

EMPERATURE LIMITER

10

5.6

A

IR TRANSPORT,

VANE SWITCH

10

5.7

M

INIMUM GAS PRESSURE

SWITCH 10

5.8

D

ESCRIPTION HEATER CO

NTROL

HC

10

5.9

G

AS CIRCUIT

11

5.10

M

EASURING AND ADJUSTI

NG THE BURNER PRESSURE 11

5.11

M

EASURING COMBUSTION

VALUES

12

6

MAINTAINING THE HEATER 12

6.1

G

ENERAL MA

INTENANCE

13

6.2

E

XTENSIVE MAINTENANCE

IN A POULTRY SHED

13

6.3

C

LEANING THE BURNER U

NIT

13

6.4

C

HANGING GAS TYPE

14

6.5

S

PARE PARTS

14

7

PROBLEM SOLVING

15

7.1

G

ENERAL

15

7.2

E

RROR CODES

15

8

WIRING DIAGRAM

17

9

SPECIFICATIONS

19

9.1 DXA H

EATER

75

19

9.2 DXA H

EATER

100

20

9.3 DXA H

EATER

120

21

Instruction manual

DXA heater

pag

e 3

1

About this manual

In this manual you will find information on the DX Heater. One section of this is intended to
enable the user of the DX Heater to operate the appliance in a sensib

le and safe way. Another
section is intended to enable the fitter or service technician to fit, set up and maintain the DX
Heater, and to detect and resolve any malfunctions quickly and effectively.

This manual makes regular mention of a fitter or serv

ice technician. This refers to a qualified
fitter or service technician who is trained in the fitting, malfunction-free operation and
maintenance of the DX Heater. He is also competent to carry out work on a heater.

1.1

Gu

arant

y

Guaranty is only valid when the

appliances are used

and or installed according to thi

s manual.

2 Safety instructions and precautions

Always read the entire manual so that you are familiar with all the safety instructions and
precautions.

2.1 Key to symbols

Safety warning: warning of danger

of physical injury or (direct) damage to product, animals or

the environment.
Warning
Information
Tip

2.2 Symbols on the appliance

Warning which refers to the manual for information on the component on or next to which the
warning is positioned

.

Warni

ng of the potential hazard of electric shock.

Safety grounding

2.3

Wa

rnings

Keep this manual in a safe place near the heater so that you can consult the manual whenever
necessary

Incorrect use of the heater can result in physical injury. Therefore, follow

the instruction below

carefully:

•

Avoid physical contact with the motor or other hot parts of the heater.

•

Do not touch live parts of the heater.

•

Keep body parts, loose items of clothing, jewellery or hair away from rotating fan blades or

other movin

g parts of the heater.

•

Do not pl

ace articles in front or nearby

the heater because this can cause fire hazard.

The following conditions can lead to damage to the heater:

• •

Incorrect transportation or storage of the heater;

• •

Errors in the assembly of (

parts of) the heater;

• •

Excessively high or low oil pressure;

• •

Excessively high or low ambient temperature;

• •

Wear, ageing and metal fatigue in components of the heater.

• •

Moisture: the heater has IPX4D protection grade

.

Instruction manual

DXA heater

pag

e 4

2.4 Pre-check.

Before unpacking and i

nstallation, please check (i.e. on the data badges) if the heater
corresponds to the order and if it is suitable for the local present provisions (gas type, gas
pressure, electrical supply etc.)

The installation must comply with all applicable local and n

ational standards.
The installation of the air heater must be in accordance with the relevant requirements of the
Gas Safety Regulations (for example in GB; The Institute of Gas Engineers IGE UP-1 and 2),
Building Regulations and the IIE Regulations also incorporating the gas safety (installation and
use) regulations. Other national and/or local regulations may apply (the Local Authority, Fire
Officer and Insurers)

The competent installer must make sure the heater operates correctly and must instruct the
user about the safe operation of the heater.
This heater is takes its combustion air from within the room in which it is located, the necessary
ventilation requirements must be followed for gas safety regulations.
The heater should not be installed in are

as containing corrosive or explosive vapours

. P

lease

consult your supplier;

otherwise the guarantee will become invalidated.

Make sure that the warm air can be blown out freely. There should absolutely be no (possibility
of) materials within 5m from the f

ront of the heater.

The heater has been tested in detail on safety and correct operating settings before leaving the
factory. It has been adjusted for the type of gas that is stated on the data badge. Should there
be any doubt, please contact your suppli

er.

2.5 Safety precautions

If the distance between hot flue gas coming from the outlet cover and people or animals is too
short, this may pose a danger to them. In addition, the heater is started automatically, which
may pose a risk to people or animals in the

vicinity of the heater. Therefore, you should always
observe the prescribed minimum distances between the heater and people, animals and crops
(refer to Mounting the heater)

O2 is

used during gas combustion and converted, amongst others, to CO2. Too much CO2 in
the air may be harmful to people, animals and crops. Therefore, you should always ensure
sufficient fresh air can enter the space where the heater has been placed, e.g. by way of open
windows or a separate fresh air intake.

When the CO2 concentrat

ion is too high, the heater will
not function properly. There may be incomplete combustion. (Danger of Carbon Monoxide CO)
The CO2 concentration may not exceed 1%. Minimal ventilation requirements 1000m3/h for
each 100kW installed power.

Observe the follo

wing precautions when using the heater:

•

Only start the heater if access panels and protective grill have been fitted.

•

Have the heater checked and serviced once a year by a service technician.

•

This appliance is not intended for use by persons (including

children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.

•

Children should be superv

ised to ensure that they do not play with the appliance.

•

Children may only be present in the space where the heater has been placed if

supervised by an adult.

•

Ensure the socket outlet is located within a 2 m radius of the heater and that the plug can

be r

emoved easily and quickly from the socket outlet.

•

Leave the plug in the socket outlet even if you are not using the heater. This prevents

condensation of the print circuit board; this may lead to heater damage and/or
malfunctions.

•

Make sure the mains cabl

e does not get damaged. Replace a damaged cable

immediately.

Instruction manual

DXA heater

pag

e 5

•

Do not connect the heater to an air duct, as this has a negative effect on the performance

of the heater.

•

Due to the presence of CO2 and the noise levels produced, you must obtain permission

f

rom the safety and health service before taking a heater into use that is to be placed

•

Minimal ventilation requirements 1000m3/h for each 100kW installed power.

•

In case of a malfunction, ensure the heater is free of electricity by removing the plug from

t

he socket outlet, in order to prevent damage to the heater.

2.6 Water and chemical substances

Observe the following measures if water or chemical substances that could be dangerous to
people, animals, and/or crops are used in the space where the heater has

been placed:

•

Switch off the heater.

•

Make sure the heater cannot be started automatically by removing the plug from the

socket outlet.

•

Close the gas tap.

•

Cover the heater.

2.7 Use in a greenhouse

Observe the following additional measures when using the h

eater in a greenhouse:

•

The CO2 level should not exceed 1% (10,000 ppm).

•

In completely enclosed greenhouses there must be at least 100 m3 fresh air per m3 of

gas and external atmospheric protection.

Or Minimal ventilation requirements 1000m3/h

for each

100kW installed power.

•

There must be at least two openings in the space to ensure adequate circulation of air if

no artificial ventilation is present.

•

Use the heater preferably in combination with one or more exhaust fans and a

CO2 meter

•

Do not use any su

lphurous fuels in the space where the heater has been placed, as these

contain high amounts of sulphur that could be harmful.

2.8 Use in a poultry shed

When cleaning and disinfecting a poultry shed in which a heater has been placed, or when
spreading sawdus

t, the following precautions should be taken. Failure to take these precautions

will give rise to a risk of explosion or fire.
Take the following into account when using the heater in a poultry shed:

•

The CO2

content must not exceed 0.3% (3,000 ppm).

•

If

no artificial ventilation is provided, there must be at least two openings in the space to

ensure sufficient circulation of air.

•

Cover or remove the heater when cleaning or disinfecting the poultry shed.

•

When spreading sawdust the heater must be covered

to prevent sawdust particles from
entering the heater and creating a fire hazard. Also make sure that the heater cannot be
started automatically by removing the plug from the socket outlet. Also close the gas
valve.

•

Clean the heater after every poultry s

hed clean-out to prevent the heater from becoming

dirty.

•

Do not use water when cleaning the heater

3

Introducti

on

DXA heater

The DX Heater is a direct fired heater designed specifically for greenhouses and poultry sheds.
The device is placed in the enclosed

space itself, which means that the heater displaces air only
and uses a small amount of energy to warm and ventilate the space. The large air capacity and
the unique shape of the heater also ensure that the device can distribute the air within the
space i

n the best possible manner.

The heater's design is aimed at straightforward installation, maintenance and safe use.
Ignition and combustion for example are controlled automatically and parts are easily accessible
for cleaning and maintenance.

Instruction manual

DXA heater

pag

e 6

The heater

can be ordered for different gas types and fuel settings:

•

Natural gas

•

Propane

, Butane and LPG

•

Paraffin and Diesel

4

Installati

on

Read the chapter on Safety instructions and precautions first and observe all warnings and
precautions. Follow all instructio

ns in this chapter explicitly.

Only skilled installers or service technicians are permitted to install the heater.

4.1 Mounting the heater

Mount the heater in a sturdy manner, taking into account the dynamic load and the weight of the
appliance (refer to

Specifications ).

Take the following into account when installing the heater:

•

Attach chains to the four hook eyes and suspend the heater.

•

Make sure the heater is positioned horizontally otherwise it will not operate (properly).

•

Do not connect the heat

er to an air duct, as this has a negative effect on its performance.

•

Take into account the minimal distances between the heater and people, animals and

crops:

• 5

m on the outlet side;

•

3 m on the inlet side;

•

1 m on the other sides.

5

m

1m

1

m

1m

1

m

3

m

The same minim

um distances apply between the heater and walls, glass and other objects, with
the exception of the outlet side. The minimum distance on this side must be equal to the throw
that the heater is capable of producing. This depends on the type of heater (refer

to

Specifications ).

4.2 Gas connection

To connect the heater to the gas network, your supplier

can

supply a gas connection set that
consists of a ball plug valve, (reducing) nipples, gas filter, gas pressure regulator and gas hose.
A set is available for ev

ery type of gas.

Instruction manual

DXA heater

pag

e 7

Keep the following in mind when connecting the heater to the gas network

.

The gas supply line has to meet the national valid requirements and possibly the local
requirements of the building inspector, police or fire brigade. (

For example in GB it must comply
with Gas Engineers publication UP-1 and UP-2 together with BS 6891.)
A manual isolation valve in the supply line must be placed within reach of the heater, and all gas
lines must be mounted without any mechanical tension.
When testin

g the supply lines with pressures above 60 mbar, this manual valve at the heater
must be closed.
The working and standing supply pressure must be between 17mbar and 50mbar, measured at
the inlet pressure nipple of the gas control in the heater.
The burner

pressure is pre-adjusted (see technical details). The burner pressure can be

measured on the P-out measure point on the gas valve.
There is a kit available for changing the

gas type

. (from natural gas to propane / butane or vice

versa) The gas

nozzle

ha

s to be exchanged and the

burner pressure

readjusted. Look into the

specifications for the exact adjustments. Instructions can be found in this manual.

4.3 Electricity supply

4.3.1 230Vac

supply

The installation must comply with local and national requirements, (as well as IEE regulations).
The unit heater is delivered completely internally wired. Where controls of any type are to be
added (e.g. room thermostat), the relevant wiring diagrams must be followed. Never use a room
thermostat to interrupt the electrical s

upply to the heater!

The supply is 230Vac 50Hz with earth. When the

supply

voltage is lower than 195V and higher

than 255V the correct functioning of the heater is not

guarantied.

A mains cable including plug is supplied with the heater. The wires

of t

he cable

must

be connected to the

clamps in the connection box. Make sure you do not damage the mains
cable. Replace a damaged cable immediately.
When the heater is connected without a plug, m

ake provisions to completely isolate the heater

for maintenance

purposes. This can be an isolation switch (min. 3mm contact opening gap).
The switch should not interrupt earth.
Ensure the plug or switch is located within a 2 m radius of the heater and the plug can be
removed easily and quickly from the socket

4.3.2 Thermost

at connection

The heater can be controlled in various ways. It can be controlled by a simple ON / OFF signal,
but it can also be controlled by an external print.

4.3.3 Thermostat cable

In all cases the communication between the heater and the thermostat is base

d on a two wire,
low-voltage connection. (see also electrical wiring diagram).
Cable specification: signal cable, 1x2x0,8 (shielded and twisted)
Maximum length 200m.

If the chosen cable is too thin, the signal will be too weak and heater will not work

. I

f the cable is
not shielded and twisted the signal might become disturbed in an EMC unfriendly environment.
Keep the thermostat cable separated from mains cables. Connect the earth shield of the cable
only to the earth terminal in the heater.

If these gui

delines are not followed it may result in malfunction of the installation or worse, it

could damage the thermostat or the electronics in the heater.

4.3.4 Simple ON / OFF contact

(standard configuration)
The heater can be connected to a potential free ON/OFF co

ntact.