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9.4  Instructions

After identifying the problem, use the Case number to find 
the possible cause in this paragraph.

Case 1:

 Flame lasts only 5 seconds after ignition.

•  The flame is not detected:

 

Check the ignition/ionisation cable and the 
electrode. The cable should have a resistance 
of 1 kΩ.

•  The air heater is not earthed properly.
•  The circuit board is defective.

Case 2: 

No flame after ignition.

•  There is not enough gas pressure.
•  The gas mixture is too poor:

 

Adjust the gas valve (see §8.1).

•  The gas valve does not open:

 

During ignition, check for a 230 V voltage on 
the valve.

•  Check if the ignition electrode sparks. If not:

 

Check the cable and electrode and replace 
them when damaged.

 

Check the burner control unit and replace it 
when it does not give a spark output.

•  Check the ignition transformer

Case 3:

 Heat exchange sensor or flue sensor is overheated.

•  Check if the connectors J12 and J6 are plugged in 

correctly and if the connection J12[1-4] (optional 
overheating protection) is closed.

•  Check if the system fan supplies enough air.
•  Check the settings of the gas valve. The heater may 

be overfired. If so:

 

Adjust the burner pressure.

Case 4:

 Heat exchange sensor or flue sensor not detected, 

or short circuit.

 NOTICE 

 L-25 refers to the heat exchange sensor. L-26 

refers to the flue sensor, if applicable.

•  The heat exchange sensor consists of two internal 

sensors. The readings of these sensors may differ 
too much:

 

Measure the resistance of each sensor. The 
resistance should be 20 KΩ at 25 °C and 25 
KΩ at 20 °C.

 

If the measured values differ too much, 
replace the sensor.

Case 5:

 Too many flame failures while burning.

•  The gas supply is not constant. This results in a 

drop in gas supply pressure while burning and 
causes the flame to extinguish.

 

Check the gas supply pressure while the 
heater is burning.

•  Recirculation of flue gas. Due to a problem with the 

flue terminal the flue gas is sucked back into the air 
inlet. This results into a lack of oxygen and causes 
the flame to stop.

 

Check the flue system and fresh air supply. 
Only certified, original parts should be used.

Case 9: 

Too many reset actions in a short timespan.

•  This error will disappear after some time or if the 

main power is disconnected for a while.

Case 12:

 E-error for more than 24 hours.

•  Switch the air heater off and on and check the error 

code.

Case 13:

 Internal error.

•  Isolate the electrical supply and reenergise. If this 

does not help:

 

Replace the burner control unit.

Case 15:

 Flame detected after closing the gas valve.

•  Check if the gas valve closes too slow. If so:

 

Replace the gas valve.

•  Check if the ionisation electrode is wet. If so:

 

Dry, clean or replace the electrode.

Case 16:

 Flame detected before opening the gas valve.

•  Check if there really is a flame before ignition. If so:

 

Replace the gas valve.

•  Check if the ionisation electrode is wet. If so:

 

Dry, clean or replace the electrode.

Case 17:

 Vane switch is closed while fan isn't running

•  Check if the vane switch is stuck and cannot go 

into the rest position. If so:

 

Clean or replace the vane switch.

Case 18:

 Vane switch does not close when the fan should 

run

•  Check if the fan runs. If so:

 

Check if the vane switch is stuck and cannot 
go into closed position. If so:

 

Clean or replace the vane switch.

•  If the fan does not run, check if the fan motor is 

powered. If not:

 

Replace the fan motor or the capacitor.

Case 19:

 Heater configuration error

•  The heater does not know which program to run, 

due to a mismatch between the burner control unit 
and the display. If so:

 

Contact your supplier.

Содержание DXA100

Страница 1: ...DXA en v2 0 12 2019 INSTALLATION MANUAL AIR HEATER TYPE DXA ...

Страница 2: ...g 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 Warning...

Страница 3: ... 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...

Страница 4: ...e 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...

Страница 5: ... 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 II2 H3 B P DE II2 EL...

Страница 6: ...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 II2 H3 P B P NL II2 EK3 B P DE II2 ELL3 B P BE I3 B P FR II2 Er3 B P PL II2 ELwLs3 B P Class A3 Specification Unit DXA75 DXA100 DXA120 Gas consumption kg h 6 0 ...

Страница 7: ...H3 P B P NL II2 EK3 B P DE II2 ELL3 B P BE I3 B P FR II2 Er3 P PL II2 ELwLs3 B 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 1 410 220 655 540 910 910 1230 Figure 1 Dimensions of the DXA ...

Страница 8: ... heater close to flammable materials Keep sufficient 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 doo...

Страница 9: ...e 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 ...

Страница 10: ... C L Neutal 4 5 L Neutal 4 5 L Neutal 4 5 1 2 3 4 5 6 7 8 ON 1 0 1 2 3 4 5 6 7 8 ON 1 0 S1 J14 1 2 3 4 5 6 7 8 ON 1 0 1 2 3 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 co...

Страница 11: ...s These terminals need a dry contact 5 Flue systems This air heater uses oxygen from the surrounding air for the combustion process CO2 is formed and emitted as a result Too much CO2 in the air may be harmful to people animals and crops DANGER Never allow the CO2 concentration to rise above the values shown in the table below Maximum CO2 concentration Poultry shed 0 3 3 000 ppm Greenhouse 1 0 10 0...

Страница 12: ...and gives an error 6 3 Summer ventilation The fan can be set to run in the summer Follow the instructions in the user manual of the special Room thermostat 6 4 Overheating protection The air heater s heat exchanger and flue system are both protected from excessive temperatures 6 4 1 Heat exchanger An NTC sensor is located near or on the heat exchanger This sensor monitors the heat exchanger temper...

Страница 13: ... the air heater Once the unit is installed according to this manual the unit can be commissioned To do so follow these instructions 1 Make sure the gas supply pipe is clean gas tight and free from air 2 Switch on the electric supply with the maintenance switch You are now able to observe the first start up and become familiar with the functioning of the heater NOTICE If the gas line is not purged ...

Страница 14: ...s the button until 0 is displayed to exit the service The air heater will always cool down the heat exchanger for several minutes The test mode will automatically end after 10 minutes Figure 12 Using the display ...

Страница 15: ...pressure for this air heater see 3 1 Technical specifications 5 Record the measured value as a reference for the next measurement 6 If the burner pressure does not correspond with the specified value turn the adjuster screw figure 13 3 to the specified value 8 1 1 Measuring the CO 2 values Figure 14 Measuring combustion values with a probe To measure the CO and CO2 values do the following 1 Switch...

Страница 16: ... 6 Disassemble the burner unit a Remove the stabilizer figure 15 7 from the injector figure 15 6 b Remove the flange from the injector by un screwing the injector s nut 7 Install the new injector 8 Reassemble the burner unit 9 Select the correct injector diameter and burner pressure see 3 2 10 Change the labels on the air heater with ones that have the correct values for the new gas type 11 When t...

Страница 17: ...tch does not close when the fan should run 18 L 43 Overheating Heat exchange sensor is overheated too often 3 9 2 Temporary errors The table below describes the temporary errors that can occur These will disappear automatically after the cause has been resolved Display Error type Description Case E 00 to 04 Internal error Internal error 13 E 05 Overheating Heat exchange sensor is overheated 3 E 06...

Страница 18: ...esults in a drop in gas supply pressure while burning and causes the flame to extinguish Check the gas supply pressure while the heater is burning Recirculation of flue gas Due to a problem with the flue terminal the flue gas is sucked back into the air inlet This results into a lack of oxygen and causes the flame to stop Check the flue system and fresh air supply Only certified original parts sho...

Страница 19: ...0 2 Basic maintenance To perform basic maintenance on the air heater do the following CAUTION When cleaning parts of the air heater use a dry cloth brush compressed air or a vacuum cleaner Never use a steel brush 1 Inspect the outside of the heat exchanger 2 Clean the fan guard on the outside of the heater Clean the fan blades if required 3 Open the access panel 4 Clean the inside of the air heate...

Страница 20: ...ressed air or a soft brush to clean the remaining parts from the air heater Focus on the following parts a The inside and outside of the body b The fan blades and motor c The temperature sensor d The vane switch 2 Remove all dust from the motor Accumulated dust acts as insulation and can cause the motor to overheat 3 Use a brush to remove any baked on dust 4 Clean the burner unit see 10 5 Open the...

Страница 21: ...3 4 3 1 2 J25 LED RESET 4 3 1 2 4 3 1 2 J17 N L 7 6 N L K2 11 12 dP 18 17 16 15 N L RT 4 3 1 2 J16 4 3 1 2 A 24V B GND 20 GND 21 0 10V C1 C2 C3 C5 D1 I2 K2 S3 S5 1 0 T1 V1 5 4 M5 I3 I4 K2 3 2 K6 K6 11 13 Modbus L N P1 9 A1 10 A2 A1 8 N K6 PE RT A1 A2 No Connection type A1 Alarm output 230 V V optional C1 Bus communication system C2 Modbus connection C3 0 10 V input optional C5 ON OFF thermostat D1...

Страница 22: ... GD3400 GD3400 GD3400 4 Ionisation electrode GD3391 GD3393 GD3393 5a Gas injector set Natural gas GD3434 GD3436 GD3438 5b Gas injector set Propane gas GD3424 GD3426 GD3428 6 Gas valve GD200713 GD200713 GD200713 7 System fan GD4305 GD4305 GD4305 8 Burner control unit EBM966 GY5901 GY5901 GY5901 9 Gas pressure switch GD3930 GD3930 GD3930 10 Temperature sensor heat exchanger GY3933 GY3933 GY3933 11 I...

Страница 23: ...16 426 EU GAR relating to appliances burning gaseous fuels 2014 35 EU LVD relating to the electric safety of appliances 2014 30 EU EMC relating to electromagnetic compatibility of appliances 2006 42 EG MD relating to the safety of machinery Goods should be installed and used in accordance with our instructions and with the applicable local and international rules Installation should be done by an ...

Страница 24: ......

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