VELIT 4000P User Manual Download Page 3

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4Kw Air Fuel Heaters

Table of Contents

I. Overview························································································· 1

II. Structure and Components···························································· 2

III. Installation···················································································· 4

IV. Operation···················································································· 14

V. Electrical Diagram········································································ 18

VI. Error Codes and Troubleshooting··············································· 19

VII. Care and Maintenance······························································· 20

Summary of Contents for 4000P

Page 1: ...4Kw 14000BTU Gasoline Diesel Air Heater User Manual VER 1 0...

Page 2: ...Velit parts ALWAYS carefully follow Velit installation and repair instructions and heed all WARNINGS Velit rejects any liability for problems and damage caused by improper installation or service WARN...

Page 3: ...Air Fuel Heaters Table of Contents I Overview 1 II Structure and Components 2 III Installation 4 IV Operation 14 V Electrical Diagram 18 VI Error Codes and Troubleshooting 19 VII Care and Maintenance...

Page 4: ...ing up fuel will be pumped into the combustion chamber and ignited by the glow plug Meanwhile the heating air fan pulls the indoor cold air into the heat exchange channel The air will be heated up by...

Page 5: ...rol unit 7 Control unit mounting screw 8 Compressor wheel 9 Screw 10 Screw 11 Burner 12 Fuel inlet 13 Fuel line gasket 14 Glow plug 15 Combustion chamber flange seat 16 Combustion chamber 17 Screw 18...

Page 6: ...4Kw Air Fuel Heaters 3 2 2 Housing components 1 Inlet cap 2 Upper housing 3 Lower housing 4 Outlet cap...

Page 7: ...le When the heater is installed outside the vehicle it must be ensured that the installation location will not be exposed to rain and debris on the road 3 2 1 2 Appropriate spacing must be reserved at...

Page 8: ...must be intact During installation the sealing gasket provided by the manufacturer must be used and the mounting surface must be flat Four M6 nuts provided by the manufacturer shall be used for securi...

Page 9: ...to the hot air outlet the inner diameter of the hose shall not be less than 60mm and the material must have a temperature rating higher than 130 C 3 2 6 The maximum pressure difference between the int...

Page 10: ...el Heaters 7 3 2 9 When the heater operates in internal circulation mode the hose placement needs to prevent heated air from entering the air intake again The intake air should always come from the co...

Page 11: ...supply system of the heater is shown in the following figure 3 3 1 The clip with rubber sheath shall be used to secure the fuel pump The outlet of the fuel pump should be inclined upward at 15 35 degr...

Page 12: ...er will generate pressure in the fuel line As a result these dimensions should meet the following requirements a 3m b 0 5m c 2m b 0 15m is required for a sealed fuel tank due to negative pressure Note...

Page 13: ...sharp objects and debris It should be installed away from hot components of the vehicle If necessary nylon corrugated sleeves and other protective accessories shall be installed The fuel line must be...

Page 14: ...3 4 Installation of electrical components 3 4 1 The heater control switch is connected to the 4pin connector Do not install the control switch right near the hot air outlet or the cabin door to avoid...

Page 15: ...the clamp 3 5 3 Exhaust pipe is stainless steel corrugated pipe It connects to the exhaust port of the heater and is secured with a clamp The exhaust gas from the exhaust pipe shall be discharged dire...

Page 16: ...of 90 10 3 5 9 A heat shield should be installed if there is risk for people to touch the exhaust pipe 3 5 10 The air intake pipe and exhaust pipe shall always bend downward Otherwise a 5mm condensate...

Page 17: ...he heater for the first time For fuel line within 6ft no priming is required and the heater can be started as usual It may take 2 3 tries for the fuel to reach to heater For fuel line longer than 6ft...

Page 18: ...ill automatically enter standby mode At standby mode fan icon does not turn and the display shows SET TEMP REACHED Once the temperature is three degrees lower than the set temperature the heater will...

Page 19: ...system time When the auto run is scheduled an alarm clock icon will appear in the mode page The unit will automatically start every day at the scheduled time till the feature is turned off Move the cu...

Page 20: ...the fuel pump when the fuel gets close to the unit Excessive fuel in the combustion chamber could cause incomplete combustion and difficulty in starting up Note Do not allow any other way directly cu...

Page 21: ...4Kw Air Fuel Heaters 18 V Electrical Diagram...

Page 22: ...let and make sure there is no obstruction Check whether the housing leaks air 6 Fuel pump abnormal Check the fuel pump wiring harness and connector 7 Ignition sensor abnormal Check the green temperatu...

Page 23: ...oreign materials blocking the channel 7 5 The heat exchangers and exhaust pipe cannot be used for more than 10 years Upon expiry the replacement must be genuine parts which will be replaced by the hea...