Eberspracher Airtronic D2 Specifications

AIRTRONIC D2/D4Installation, Troubleshooting & Parts ManualEsparP/N: 610-103-0901 November 2001AIRTRONICFor Heater Models Release periodAIRTRONIC

10Fuel Pick-Up Pipe Installation (Standard Pick-Up)• Choose a protected mounting location close to the fuel pump and heater. A spare fuel sender gauge

11Fuel Metering Pump• Choose a protected mounting location close to the fuelpick-up pipe and heater if not using standard assembly asshown on right.•

12Electrical ConnectionsMain Harness... 16 pin connector with 10 terminated wires

13Warning: The exhaust is hot, keep a minimum of 2” clearance from any heat sensitive materialWarning: Route exhaust so that the exhaust fumes cannot

14Heater OperationWarning: To prevent fire, the heater must be switchedoff while filling fuel tanks.To prevent asphyxiation, the heater must notbe ope

15Operational Flow Chart4. Temperature Control• The temperature is monitored constantly at the heater’sprocess air inlet or thermostat.• This temperat

16Function diagram AIRTRONIC D2Function diagram AIRTRONIC D4

Wire color key Designationfor switchesred = power (+)yellow = switchbrown = ground (-)grey = temperature sensoron thermostat*vehicle dimmer switchfor

18MaintenanceRecommended Periodic Maintenance• Remove the glow pin and inspect for carbon build up.Clean or replace.• Remove the glow pin screen and i

Self DiagnosticsThe heater is equipped with self diagnostic capability. Toretrieve information on the heater ’s last 5 faults, a retrievaldevice is re

This publication was correct at the time of going to print. However, Espar Inc. has a policy of continuous improvementand reserves the right to amend

20Note: If there are no heater faults, the heater will go througha normal start cycle and regulate based on thermostatsetting.Fault Code Fault Descrip

21Fault Code Fault Description Causes / Repair031 Blower motor interrupted Check blower motor cable harness for correct routing and damage. IfO.K., di

22Fault Code Fault Description Causes / Repair062 Thermostat/Rheostat/Timer, open circuit Potentiometer values outside of range on Thermostat (switch)

23Fuel Quantity TestThe fuel quantity should be tested if the heater has difficultystarting or maintaining a flame. Check the following beforemeasurin

24Control valuesMotor speedControl stage AIRTRONIC D2 AIRTRONIC D4• Power 4800 U/min ± 140 U/min 4400 U/min ± 130 U/min• Fast 4000 U/min ± 120 U/min 3

25Repair InstructionsRemoving the coverRemoving and checking the control unitRemoving the glow pinRemoving the liningRemoving and checking the overhea

26Heater Casing Disassembly• remove the AIRTRONIC cover• remove the control unit.Disconnect the connector of the glow pin cable harness fromthe contro

27Removing the overheating sensor / flame sensor• Remove the AIRTRONIC cover• Remove the control unitDisconnect both connectors of the overheating / f

28Dismantling the heat exchangerRemoving the combustion air blower• remove the AIRTRONIC cover• remove the control unit.Remove the flange seal.Take th

29Removing the combustion chamber• remove the AIRTRONIC coverRemove the flange seal.Take the AIRTRONIC out of the outer case (lower part).• remove con

3Heater WarningsWarning To Installer:Correct installation of this heater is necessary to ensuresafe and proper operation.Read and understand this manu

30AIRTRONIC D2/D4Service Parts Diagram1234567891011121314151617181920

31Parts List AIRTRONIC D2/D4Ref. No. Description Part Number1 Heat exchanger with burner (full assembly) 25 2069 99 06 00 • •25 2113 99 06 00 • •2 Hea

32122a3345678910101112131415161617174417181819414243202122222223242930313233343536373838a394025262728AIRTRONIC D2/D4Service Parts Diagram

33Parts List AIRTRONIC D2/D4Ref. No. Description Part Number1 Safety screen ø 60 25 1688 80 06 00 • •ø 75 25 1552 05 01 00 • •2 Warm air deflector ø 6

34Parts List AIRTRONIC D2 / D4Ref. No. Description Part Number*36 Operating switch (rotary) 12V 25 1895 71 00 00 • •24V 25 1896 71 00 00 • •37 Standar

1st. Printing - November 2001Printed in CanadaP/N: 610-103-0901Espar Products, Inc.6435 Kestrel RoadMississauga, OntarioCanada L5T 1Z8Canada (Tel): 90

4IntroductionEspar ‘s AIRTRONIC bunk heatersThe AIRTRONIC D2 is a compact diesel-fired 7,500 BTU/hr airheater, quality engineered to provide a dependa

5Note: The heater control unit is equipped with a lowvoltage cutout to prevent vehicle battery drain anda high voltage cutout to protect heater electr

6Principal Dimensions AIRTRONIC D2Principal Dimensions AIRTRONIC D4* All measurements in millimeters25.4 mm = 1”Minimum installation distance(clearanc

71 Hot Air Blower Wheel2 Control Unit3 Combustion Air Blower Wheel4 Glow Pin5 Cover6 Heat Exchanger7 Overheat/Flame sensor8 7 Day Time

NutSpring WasherSilicon gasket (flange)Stainless Steel PlatePlate sealCab Floor8Installation ProceduresHeater LocationDepending on the type of vehicle

9Warning: Do not use existing vehicle ducting or outlets.Ducts and outlets must be capable of with-standing a minimum of 300°F operating tem-peratures