Kromschroeder KAFH-OT 2E Manual

Installation and maintenance manual
OUTSIDE INDIRECT AIR HEATER
FOR LIVESTOCK
KAFH-OT 2E
KAFH-OT 18-10 EN
1312BO3933

2
TABLE OF CONTENTS
Section
No Section Pages
1 GENERAL INFORMATION
1-1 General recommendations
1-2 Unit description
1-3 Instruction for use
1-4 Operating
1-5 Safety
5
2 TECHNICAL FEATURES
2-1 Performance of gas heater KAFH-OT
2-2 Dimensions
7
3 INSTALLATION
3-1 Recommendations for the installation
3-2 Assembly
8
4 ELECTRICAL CONNECTION
4-1 Electrical diagram
4-2 Control signal
4-3 Connection of the control panel
4-4 Electric connection
10
5 FLUE PIPE CONNECTION
5-1 Generalities
5-2 Flue kit connection
12
6 GAS CIRCUIT
6-1 Generalities
6-2 Connection
13
7 COMMISSIONING
7-1 Commissioning
7-2 Operating mode
7-3 Default display
7-4 Spare part list KAFH-OT
14
8 CHANGE OF GAS
19
9 MAINTENANCE
20
10 TROBLESHOOTING 21
11 RECOMMENDATION FOR USERS 22
© Copyright
This range of products are constantly being updated and refined. We reserve the right to change our products and
their relevant technical data contained in this publication at any time and without prior notice.

3
AVERTISSEMENT
CE marking
Concerning the technical demands that are required, the CE marking is the official recognition of the quality of de-sign,
manufacture and performance of this device. Its long lifetime and its performance will be at optimum level if its use and
its maintenance are properly carried out and the regulations in force.
Responsibility
This equipment must be used expressly for the purpose for which KROMSCHROEDER has designed and manufac-
tured it. Any contractual liability of KROMSCHROEDER is therefore excluded in case of damage undergone by per-
sons, animals or goods, following errors in installation, settings, maintenance and inappropriate use.
The devices must be equipped exclusively with genuine accessories. KROMSCHROEDER will not be held responsi-
ble for any damage whatsoever arising from the use of an accessory which is inappropriate to the device.
The devices must be installed by qualified professional workers, respecting the regulations and decrees in force, and
in accordance with the instructions shown in this instruction manual. The installer is required to establish installation
conformity certificates produced by the ministries responsible for the construction and safety of gas. References to
standards, rules and directives mentioned in this manual are given for information purposes and are only valid at the
date of printing this manual.
KROMSCHROEDER is responsible for the conformity of the device to the rules, directives and standards of construc-
tion in force at the time of marketing. Knowledge and respect for the legal provisions as well as the standards inherent
in the de-sign, implantation, installation, commissioning
Reception – Storage
The gas unit heater is delivered on a wooden pallet, protected by cardboard packing and a plastic film. It is essential to
check the condition of the equipment delivered (even if the packing is intact) and its conformity compared to the order.
In case of damage or missing parts, you must report the observations on the transport company’s receipt form in the
most precise way possible, “subject to unpacking” has no legal value, and then you must confirm those reservations
by registered letter within 48h to the transport company. We remind you that it is the responsibility of the buyer to
check the delivered merchandise, no recourse will be possible if this procedure is not respected.
Store the equipment in a clean and dry room, away from shocks, vibration, divergences in temperature and in an am-
bient environment with a rate of hygrometry lower than 90%.
Guarantee
Your device benefits from a contractual guarantee against any manufacturing defect, the duration of that guarantee is
shown in our catalogue.
Our liability as a manufacturer cannot be committed when incorrect use of a device has occurred, where there is a
defect or of an insufficiency in the maintenance of that device, or an incorrect installation of the device (it is your re-
sponsibility, as regards this, to check that the latter is carried out by qualified professionals).
In particular we will not be held responsible for material damage, intangible losses or bodily injury resulting from an
installation which does not conform:
- to the legal and regulatory provisions or those imposed by local authorities,
- to the national or local or particular provisions governing the installation,
- to our instructions and recommendations for installation, in particular the regular maintenance of the devices,
- to the rules of the trade.
Our guarantee is limited to the exchange or repair of only those parts which are recognised as being defective by our
technical departments, excluding the cost of labour, travel and transport.
Our guarantee does not cover the replacement or repair of parts as a result of, in particular, normal wear, incorrect
utilisation, service visits by unqualified third parties, a defect in or insufficiency of maintenance or surveillance, non-
conforming electrical supply and the use of a fuel which is inappropriate or of bad quality.
Sub-assemblies, such as motors, pumps, electric valves, etc…, are only guaranteed if they have never been removed.
The rights established under the European directive 99/44/CEE, transferred by the legislative decree No. 24 of 2 Feb-
ruary 2002 published on the Official Journal No. 57 of 8 March 2002, remain valid.

4
The specifications, illustrations and description contained in this manual are, to our knowledge, accurate
at the time of the approval to print. We reserve the right to stop offering some characteristics or to stop the
production of a model without notice it, do not constitute an firm agreement of our share.
This technical manual must be kept in good condition inside the unit.
Safety rules
- It is forbidden to plug and/or reduce the aeration openings of the installation room or the device,
- Never obstruct the smoke evacuation or the new air intake,
- Never make any modifications to the settings made by qualified personnel,
- Never spray water on the unit heater, or touch the device with parts of the body which are wet and/or
with naked feet,
- Never touch hot parts of the unit heater, and/or moving parts,
- Never put or hook any object onto the device,
- Any operation on the device is forbidden unless it has been disconnected from the electricity network and
the gas supply has been cut off.
- Do not modify the type of gas used, the settings of the device, the safety systems and regulation
systems, since that could create dangerous situations.
Warn the after-sales technician in the case of changing the gas, the gas pressure or modifying the supply
voltage.
In the case of a long period of non-operation, disconnect the electrical supply from the device. When
starting the operation again, you are advised to call on qualified personnel. As a general rule all repair
and/or maintenance visits must be carried out exclusively by authorised and qualified personnel.
The taking out of a maintenance contract is strongly recommended “see this with your installer”.
What should you do if you detect a gas smell :
- Close the outside gas valve and the electrical supply then, inform a technician for maintenance.
- Do not try to switch on the device
- Do not switch on the power supply, do not use phone inside the building.
- Call your gas supplier from another phone. Follow the instructions given by your supplier.
- If you cannot contact them, call the fire department.
Cautionary note
Electrical components, drive mechanism and combustible gas can cause injuries. To protect from those
risks during the installation or the maintenance, the power supply must be cut and the gas valve closed.
Any person involve in the installation or maintenance of this equipment must respect the health and safety
standards.
PLEASE READ CAREFULLY BEFORE CONTINUING
THIS PRODUCT IS EXCLUSIVELY RESERVED FOR A PROFESSIONAL USE. ONLY QUALIFIED
PERSONS ARE ALLOWED TO HANDLE IT. IT CANT BE ACCESSIBLE
IL NE DOIT PAS ÊTRE ACCESSIBL TO THE PUBLIC.

5
1-GENERAL INFORMATION
1-1 General recommendations
The air heater KAFH-OT are intended for the heating of industrial premises and poultry houses, for
outdoor use only.
The unit can only be installed in rooms which are sufficiently ventilated, except if it has a sealed
connection.
The proper functioning of the air heater depends on correct installation and commissioning.
Installation and maintenance must be carried out by qualified personnel in conformity with the regulatory
texts and the rules in force.
If the generator is used for livestock, such as a poultry houses, it must be cleaned after each breeding, or
more frequently, if the level of pollution requires it.
The non-compliance with such rules entails the rejection of all responsibility from the manufacturer.
DO NOT INSTALL GAS HEATERS IN :
- Rooms which have a risk of explosion,
- Rooms containing chlorinated combination steam,
- Rooms with a high content of combustible dust,
- Rooms which are excessively humid (electrical danger).
- Domestic premises
After having checked that the installation respects the recommendations of this notice, it is the
responsibility of the installer:
1) to inform the user:
- that it cannot carry out itself any modifications to the design of the devices or the method of carrying out
the installation; the least modification (exchange, withdrawal....) of safety components or parts which
influence the efficiency of the device or the hygiene of combustion will systematically cause the withdrawal
of the EC marking.
- that it is necessary to recommend cleaning and maintenance operations.
An annual preventive maintenance operation is compulsory.
2) to give these instructions to the user. They form an integral part of the device and must be retained and
must accompany the device, even in the case of sale to another owner or user.
Being always intent on improving the quality of our products, we seek to improve them on a permanent
basis. We therefore reserve the right, at any moment, to modify the specifications shown in this document.
1-2 Description of equipment
The gas heater KAFH-OT is an independent hot air generator, running on natural gas and on propane;
it is in conformity with the European directives 2009/142/CE and 2009/142/CE applicable to gas devices
(EN1050:2009 and EN1196:2011 Standard), certificate n°01430098200 of 30/10/2014.
It constitutes a "direct" heating gas system ; it is a device for the production and the emission of heat
without an intermediate vehicular fluid. For the whole range described in these instructions, the
combustion products are evacuated out of the room by an extractor. The combustible air is taken from the
ambient environment or from outside. Those units can be connected with concentric flue kit, C12-C32 type
or with single flue kit, B22 type.
The gas heaters of the KAFH-OT range work with different gas indicated on the identification plate in
conformity with the European directive.

6
1-3 Instruction for use
- Please read the instructions in this manual carefully for the operation and maintenance of this device.
- Carry out maintenance at least once a year by qualified personnel. The frequency of the maintenance
operations depends on the environment in which the device is installed. More regular inspection must be
carried out in dusty locations. If the unit is used in poultry houses, it must be cleaned after each lot of
animals, or more if there is a high degree of pollution.
- Regularly check that device, the chimney or the gas pipe are not damaged.
- Regularly check that air openings in the building and around the device are not obstructed.
- Check that hot air circulates normally in the room, and therefore that there is no obstacle on the suction
side (fan side), and in front of the blowing side of the unit (check that the grille is well opened).
- The control box must have a cut off electricity each 24 hours.
1-4 Operation
- The generator consist of a burner, a heat exchanger and a propeller blower (fan).
When heat is required, the burner ignites using the ignition electrode. After reaching the propeller
temperature, the fan starts running, hot air is blown into the room. When the setting temperature is
reached, the burner is turned off. The fan continues turning for a short time, until the heat exchanger has
cooled.
- It has two modes of operation: Manual and Automatic (through control signals)
1-5 Safety
- The ionization probe detects if there is a flame or not. If not, the gas valve are immediately closed.
- The thermal protection of the heat exchanger is ensured by a thermostat housed in the exchanger
chamber with manual reset. It protects the device from overheating, due to malfunction or improper use.
Additionally there are two thermal sensors, that measure the temperature of the exchanger chamber and
the driven air
-The differential pressure protection of the combustion air is made by a safety pressure switch of the
intake / exhaust flue gas fan.
If the operation shown any difficulty whatsoever, please contact your installer or the After Sale Service of
your dealer.
Make sure that the device can be normally supplied with combustion air at atmospheric pressure (it must
be taking into account if there is any modification of the building after the installation of the device). An
excessive vacuum inside the room can harm the proper functioning of the device and deprive it of air
necessary combustion.

7
TYPES KAFH-OT
Calorific output kW 72
Usable power kW 68.4
Efficiency % 95
Fan mm 630
Rotation speed rpm 910
Air flow at 15 °C m3/h 6 800
Delta T°of the air °C 29.6
Gas flow at 15°C
- Natural G20
- Groningen G25
- Propane G31
20 mbar
25 mbar
37 mbar
7.50 m3/ h
8.33 m3/ h
5.53 kg/h
Smoke exhaust diameter mm 80
Supply voltage Monophasic 230 Volts / 50 Hz - IP54
Electrical power W 760
Electrical current A 3.4
Operating temperature °C 0/+40
Weight kg 250
2-1 Performances of gas heater KAFH-OT
2-2 Dimensions
KAFH-OT Model
The heaters are equipped with an axial fan
for a direct blowing into the room.
They are designed to be installed outside
They are equipped as standard with a two-
stage gas valve to better meet the heating
demand
2– Technical features
2-1 Rendimiento del generador de aire caliente KAFH-OT
Dimentions A (mm) B (mm) C (mm) D (mm) E (mm) Flue gas (mm) G (Gas )
KAFH OT 1 720 1 650 1043 1 075 1 340 80/125 3/4’’

8
3– INSTALLATION
3-1 Recommendations for the installation
For a good functioning and the security of the device, it is imperative to respect some installation rules :
- Make sure the stand is strong enough.
- Keep enough distance between the device and any obstructions.
- Do not obstruct the access doors to the technical compartments, take into account the possibility of
opening the access for maintaining and cleaning operations.
- Be careful to every flammable products. Ensure you that the air flow to and from the heating device is
without obstruction, and the warm air can freely flow.
- No object can be placed at less than 0,5 m around the heater.
- The KAFH-OT is furnished with mounting checkpoints M8, check the technical drawings.
- Make sure that, after mounting, there is no mechanic tension on the gas or electric connection.
- Make sure that the flues pipes are enough cleared for correct operation, see chapter concerned.
- Install the device perfectly horizontally.
- Install the device with a light incline, 3 to 5°, to the front (air diffuser) to facilitate the evacuation of dirt
during cleaning.
- In the part installed in the outside (behind the wall) respect the
minimum space of the drive side
A minimum = 220 mm
A maximum= 320 mm
B maximum= 600 mm
A
B
3º-5°
INDOOR
OUTDOOR

9
3-2 Assembly
- Make an opening in the wall but keep a minimum space to slide the device in this opening. Be careful
to respect the clearance dimensions.
- Put the lower brackets in both side of the wall.
- Introduce the device
- Set the support, fix the height (check the measures on the technical documentation), make sure the
support is mounted on a strong surface.
- Place the other brackets on the inside and outside of the wall (cover the perimeter of the device).
- Ensure the correct water tightness of this mount by applying a waterproof paste adapted to the
materials and the high temperature
5m
5m
1 m mini
0,6 m
1mmini
Inside view Outside view
0,6m
5m
0,6 m
1 m mini

10
4– Electric connection
Caution, before any action, make sure that the electricity is shut, to avoid any electrocution risk.
These actions must be realised by a qualified person with the required qualifications.
4-1 Electrical diagram
CMBF-2 Regulation and management card
Ventil Blowing fan
THS Overheating safety thermostat
PA Fan safety pressure switch
SR Air intake sensor
SF Exchanger sensor
DMN31F Control and safety box
VB Combustion burner fan
KM1 Combustion burner fan contactor
0v Reference (0 volts)
VG Gas solenoid valve
Th 2 stage valve control Thermostat
4-2 Control signal
The device can receive and communicate different information through a signal 0/10 volts.
See charter « 7-2 Operating mode »
CAUTION, for the connection of the regulation, please refer to the specific technical
manual of the regulation and charter « 6 Gas connection » and charter « 8 Change of Gas »

11
4-4 Electric connection
The installation must satisfies the actual local or national rules.
The power supply of the device is on 230V monophasic, with a protected electric cable. The cut and the
protection of the cable must be dimensioned regarding the device number on the line and its length.
Be sure that we dispose of a proper safety ground connection(1).
Check if the tension and the frequencyof the electricity supply correspond to the necessary requirements.
To ensure people safety and device safety, it is recommended to have electrical isolators proximity(2).
4-3 Connection of the control panel
The device is delivered with a connection plug to connect the regulation. Depending onthe control mode
selected, refer to the scheme below :
Control by a remote thermostat Control by a remote thermostat with
default signal return
1
2

12
Foresee a sufficient ventilation in the room. The required fresh air for combustion must be at least of 100 m3/h /unit.
The section of flue must be at least equal to the diameter of the heater outlet.
The smoke exhaust cannot be vertical or at 45°mini mum.
The total length of the connection cannot exceed 6 m, knowing that : elbow 90°or 45°= 1 m of flue.
If the outside part of the flue is higher than 2 m, foresee an insulated pipe.
The evacuation must be outside for a good fumes evacuation.
Do not confine the evacuations, under a lean-to per example, risk of re-fume extraction from the device.
Make sure that the fumes are not reintroduced in the heated room, provide enough space regarding the ventilation
hatches of the heated room.
ATTENTION
Mounting type :
Flue pipe diameter 130 mm
- Tee with airtight (1) at the beginning,
- Single extension of 1 m (2),
- Roof terminal (3)
The roof terminal must be minimum at the
same height of the roof ridge.
5– FLUE PIPE CONNECTION
5-1 Generalities
During the commissioning and the maintenance, make sure that:
- Combustion air intake and smoke exhaust are not obstructed.
- For concentric installation, check that the 2 circuits (combustion air intake and smoke exhaust) are well
separated and sealed. Check also the installation of flue pipes and seals.
- Seals are not damaged during the installation of the flue pipes, between them or on the unit. Ensure the
tightness.
- There is no water which can come inside the unit by the flue pipes (electrical hazard). For this, use: drain tee,
condensate drain pan,…
-For big extension and concentric installation, it is necessary to foresee a condensate drain pan.
5-2 Single flue kit connection
The combustion air is taken directly to the environment and the flue gas is driving to the exterior thanks to a single
flue.
Roofing type B22 Vertical
3
2
1
Montage type :
Flue pipe diameter 80 mm
- Airtight terminal (1),
The horizontal evacuation must have an
incline of 3° down to prevent any
condensate to return to the fumes
extractor.
Roofing type B22 Horizontal
4

13
6– GAS CONNECTION
6.1 Generalities
First of all it is necessary to check that the device is in conformity with the type of gas distributed. For this
purpose, you must refer to the indications shown on the identification plate.
The gas supply must be appropriated to the power of the heater and be equipped with all the security and
inspection devices required by current standards.
A precise study must be carried out on the diameters of the piping depending on the type and the flow of
gas and the length of the piping. It is necessary to make sure that pressure drops in the piping do not
exceed 5 % of the supply pressure.
The gas connections must be made in conformity with the recommendations for indoor installations
whatever the type of gas, by qualified personnel holder of necessary approvals.
Caution: before opening the gas network, check the sealing up to the unit heater solenoid valve
6-2 Connection
Gas connection type :
A- Under 50 mbar natural gas supply (shut off valve + gas filter)
B- Over 50mbar natural gas supply (shut off valve + gas filter + gas pressure regulators)
C- LPG supply (shut off valve + gas filter + gas pressure regulators)
Gas connection kit (*)
1– Gasket (supplied)
2– Connection with air heater (supplied)
3– Gas regulator
4– Filter
5– Gas valve 1/4
*For details of the kits, refer to their instructions
A
C
B
3
5
4
1 2

14
7 - COMMISSIONING
7-1 Commissioning
1– Before starting the commissioning and powering the device, check the different connection if they have
been properly installed, especially :
- Air intake and louvers connection,
- Gas connection,
- Electric connection, ground safety connection ...
Also check :
- That the connection are perfectly sealed
- That the protective film on the panel is removed
- That the distances around the generator are respected
2– Check the electricity power supply, between 210 Vac and 230 Vac, be careful of the neutral phase
polarity. For neutral "impedance" provide an unbiased control box.
3– Check if the gas type correspond to the device, with a maximum pressure of 50 mbar, refer to the
chapter « Gas Connection ».
4– Check the signal 0/10 volts connection, for an automatic operation.
5– Commissioning the generators.
- Open the gas valve and purge the pipes.
- Open the shut off valve for each device.
- Check if the electrical isolators proximity devices are set on ON (if available).
- Check if the louvers are unobstructed.
In automatic mode :
- On the units dashboard, check if it is on “automatic” mode (see next page).
- On regulation, send the control signal (see «4-2 Connection of the control panel” and «7-2
Operating Mode») equivalent for a set point temperature of 1°C higher than the room temperature.
- The generator is starting.
In manual mode :
- On the unit dashboard, check if it is on manual mode, (see next page).
- Set the set point temperature (see «7-2 Operating mode») 1°C higher than the room temperature.
- The generator is starting.
6- Proceed gas safety test by closing the gas inlet. The unit must stop and make three start attempts
before switching to safety (Lock). Reset the device on the dashboard (see next page), then proceed the
same test by remotely reset using control signal.
7– Turn the device on the desired mode, automatic or manual, and set the desire set point temperature.

15
STOP
OFF T.OUT= 20°C
7-2 Operating mode
To choose the operating mode, on the dashboard press
the buttons and , then press on the button to
confirm.
STOP ↔AUTO ↔MANUAL ↔STOP
The first line displays the active mode (or to confirm) as
well as information related to this mode.
- MANUAL mode :
TI = Ambient temperature (Fan probe)
or TS= Desired temperature
- AUTO mode :
Voltage supplied by the control
- Mode STOP :
No info
The second line displays the statements of the device :
OFF or ON + T°C (temperature red by the inside
probe) :
- If device ON = blowing temperature
- If device OFF = device temperature
Manual mode
Display in MANUAL mode :
- OFF, device stopped
- START, device starting
- ON, device running
- BURNER DEFAULT, device turn in safety burner mode
- OVERHEAT, device turn in safety overheat mode
When the Manual mode is on, the device manages the
temperature regarding the air intake (measured by a probe
fixed on the fan louver) and the desired temperature (TS)
TI = Air intake temperature (Fan probe)
TS = Desired temperature
To fix the desired temperature (TS) press the button
to display the set temperature (TS : XX.X °C).
Press the button or to increase or decrease the set
temperature, then press to confirm.
In case of default, the room temperature is displayed in the
upper right corner of the screen, the default will be
displayed only on the second line.
MANUAL TI= 20.0°C
OFF T.OUT= 20°C
AUTO 0V
OFF T.OUT= 20°C
MANUAL
OFF T.OUT= 20°C
MANUAL TS : 24.0°C
ON T.OUT= 20°C
MANUAL TS : 24.0°C
ON T.OUT= 22°C
MANUAL TI= 20.0°C
BURNER DEFAULT

16
Mode AUTO
Display in AUTO mode :
- OFF, device OFF
- FAN ONLY, ventilation without heating
- START, device starting
- ON, device ON
- BURNER DEFAULT, device turn in safety burner mode
- OVERHEAT, device turn in safety overheat mode
When the AUTO mode is engaged, the signal voltage
incoming is displayed at the end of the first line.
If the signal voltage incoming is between 2V and 4,9V, the
device will be on ventilation only (statement displayed on
the second line).
If this voltage signal is above 5V, the device (burner) will
start. Once the device is running, the heat exchanger
temperature will be proportional to the signal voltage
incoming (50ºC –80ºC).
In case of fault, the control command is displayed in the
upper right corner of the screen, the default will be
displayed only on the second line.
AUTO 0V
OFF T.OUT= 22°C
AUTO 2.4V
FAN ONLY
AUTO 3.5V
ON T.OUT= 22°C
AUTO 10V
BURNER DEFAULT
The device can receive, via a signal IN 0-10V, and communicate, via a signal OUT 0-10V, the
following information :
Voltage
(Volts) Control signaling (Incoming voltage 0-10 V )
0 Switching off (OFF)
1 to 1.5 Reset burner (Delayed signal 1 s)
2 to 4.9 Ventilation only
≥5 Device is working (ON)
Tension
(Volts) Feedback ( OUT 0-10 V )
0 Switching off (OFF)
0,5 Manual mode engaged
1 Device on burner safety mode
1.5 Device on overheat safety mode
2 Device on ventilation safety mode
2.5 Only ventilation
≥5 Device is working (ON)

17
AUTO 10V
DEFAULT BURNER
7-3 Defaults display
Caution, the acquittal of a default should be done after analysis to determine the
importance of the incident that led to this fault, refer to the chapter «10-TROBLESHOOTING».
This operation must be performed by qualified holder of the necessary amenities.
Burner fault
This fault is due to a "lack of gas”, turning the control panel
in the safety mode.
To delete the burner fault, must operate a « reset ». there
is two way for doing this :
1- Remotely : Send a signal voltage between 1V and 1.5V
for 1 second.
2– Locally, on the device : Press the button (reset
operating when you release the button).
Overheat fault
This fault is due to an important temperature increase,
starting the safety overheat mode.
To rearm and allow the restart of the device, must press
the red button on the thermostat, inside the technical
compartment of the device.
Sensor fault
(only on the manual mode)
This fault is due to a wrong working or a connection
problem to the thermostat probe.
The rearming is automatic after the problem disappeared.
AUTO 10V
OVERHEAT
MANUAL TI : - - - -
TEMP.SENS.ERROR
MANUAL TI:18.0°C
DEFAULT xxxxxxx
1-Operation Mode
2-Room temperature
3-Kind of fault
AUTO 10V
DEFAULT xxxxxxx
1-Operation mode
2-Voltage sent by the control signal
3-Kind of fault

18
7-4 Spare part list KAFH-OT
No. Description KAFH-OT 2E KROMS Code
1 3/4” Cooper Gas Line GAZ0111
2 Regulation and management board ELE1110V2 064115
3 KAFH-OT 2E 2 Generation Gas solenoid valve GAZ0014 064141
4
Control and safety box
ATE332 141854
5 4P 230Vac 16A Contactor
ELE0253 064140
6 Ignition electrode + Cable (1000mm) ATE021+ATE028 141749+064114
7 Flue gas extractor ATE101/ATE0101/ATE125 064143
8 Ø80 mm closed pipe LE80058 064142
9 Ventilation (main) fan ATE08074P 064130
10 Smoke box / grid Ø125 -
11 Pressure safety switch ATE328 064116
12 Heat exchanger temperature sensor HB0062 064135
13 2 stage valve control thermostat THE04 064138
14 Manual reset safety thermostat THE147 064118
15 Ionization electrode + cable ATE022+ATE025 141751+141753
16 Gas train (burner) -
17 Main Fan temperature sensor ELE0247 064117
17

19
8- CHANGE TYPE OF GAS
The gas heater units are equipped with atmospheric gas burners, which allow to use natural gas G20, G25
or even LPG
The burner nozzles are designed to ensure a very good flame stability without separation nor return to the
injectors.
THESE INTERVENTIONS MUST BE PERFORMED BY AQUALIFIED PROFESSIONAL.
The gas change must be realized in the following way :
1– Disconnect the electric supply connector and close the gas supply
2– Unscrew the fixing nut of the gas network (1) on the gas valve and the three screws (2) which allow the
injector train to be fixed on the burner block.
3 - Change the injectors (see the settings table).
4 - Screw the new injectors (3) replacing the sealing rings (4) and keeping an eye on the sealing, the
injectors must be assembled dry.
5 - Reassemble the train and reconnect the gas network on the gas valve by replacing the sealing rings.
Be careful: during the reassembly don’t forget, or damage, the sealing rings.
6 - Control the sealing after the assembly.
7 - Adjust the gas pressure on the train via the regulator.
This operation must be done without gas and electricity supply.
The gas pressure is adjusted burner in operation
The gas pressure is adjusted as follows:
1– Remove the protection screw from the pressure solenoid valve
control.
2– Unscrew the pressure outlet and connect the manometer (5)
2– Set the ramp pressure (6), according to the setting table.
3– After adjustment, do not forget to replace the screw
protection and close the pressure intake.
6 - Control the sealing after the adjustments
5
6
Types
Setting for G20 Setting for G25 Setting for G31
Pressure
Regulator mbar Nozzles gas ramp Disc Extractor Pressure Regulator mbar Injectors Gas train Disc Extractor Injectors Gas train Disc Extractor
Slow High Number / Ø Ø Slow High Number / Ø Ø Slow High Number / Ø Ø
KAFH OT
6 11 14xAL 2.20 40 7 12 14 x AL 2.20 40 16 33 14 x AL 1.30 40
Pressure
regulator mbar
2
1
(Low speed)
Pressure
Test
(High speed)
8 7
Gas

20
9-MAINTENANCE
THESE INTERVENTIONS MUST BE PERFORMED BY AQUALIFIED PROFESSIONAL.
Correct and regular use and maintenance of the unit heater allows an efficient operation, minimum
consumption, as well as a long life.
THE MAINTENANCE MUST BE DONE WITH THE DEVICE COLD, WITH THE GAS AND
ELECTRICITY SUPPLIES CUT OFF.
Check the proper functioning of all safety devices and check that all screws are correctly tightened.
Heat exchanger, flue gas extractor and venturi :
Unscrew and open the blowing grille and the upper access door to clean the heat exchanger.
To get access to the rear of the heat exchanger bends, unscrew the 2 metal plates on the lateral sides.
Clean the flue gas extractor and the venturi by opening the burner compartment door.
Fan :
Clean it with compressed air
Flue pipe :
Dismantle the pipe, sweep it and check leaks.
Body and grilles :
Clean it using a duster
Gas burner :
Dismantle the burner, check the burner ramp state and clean it.
Check the state of the ionization sensor and ignition electrode, change it if it is necessary.
Gas filter :
Dismantle the dirty cartridge and clean it with compressed air.
The heaters used for poultry houses must be cleaned and maintained more frequently.
It is necessary to clean the device after each breeding!
The heat exchanger can resist to a high pressure cleaner and can be cleaned with water. The upper
access door allows a good angle to clean the heat exchanger. And the two lateral metal plates allow a good
access to the rear of the heat exchanger bends. The water will flow towards the lower access door.
CAUTION:
Do not clean the burner compartment or the fan with high
pressure jet! Do not get wet the electrical parts, ELECTRICAL HAZARD !
Do not spray through the doors, it can damage the door gasket.
Do not spray directly on temperature sensors