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13

Fuel System

The PHP-20A fuel pump and fuel system are the heart of the heater. The fuel pump not only delivers fuel 
to the heater but also controls the amount of fuel delivered. The pump is designed to operate like an 
electric solenoid and works using electric pulses. Each time it is energized, it provides a measured dose of 
fuel. It is critical to the heater’s operation to stay within parameters outlined in Figure F1 and only use the 
components provided. 

System Layout & Considerations 

• 

Keep the length of the fuel system short as possible.

• 

Mount the fuel pump as close to the fuel pickup as possible (pump pushes better than it sucks).

• 

Minimize vertical rise.

• 

Mount the fuel pump in a protected location away from road spray.

• 

Choose a mounting location for the fuel pickup pipe that is close to the heater and offer installation  

 access.
• 

Design your fuel system so that Figure F1 fuel line limits are not exceeded.

Figure F1

1. Heater 
2. Fuel Pickup Pipe
3. Fuel Metering Pump
4. Fuel Tank
5. 9-11 mm Clamp
6. 5.0 mm Rubber Fuel Line
7. 5.0 mm Rubber Connector 
8. 1.5 mm Clear Plastic Fuel Line

Содержание PHP-20A

Страница 1: ...Technical Description Installation Instructions Operating Instructions Troubleshooting PHP 20A AIR HEATER...

Страница 2: ...ater Kit List 6 Main Components and Operating Concept 8 Heater Mounting 9 Fuel System 13 Electrical Connections 16 Operating Switch 18 Exhaust Combustion Air Intake Connections 25 Heater Ducting 27 He...

Страница 3: ...quipment RVs and boats by using on board diesel fuel and battery systems Operation is simple and the heater provides a safe and reliable alternative to engine idling or need for electrical plug ins Pl...

Страница 4: ...ration Avoid touching exhaust pipe during operation Route exhaust pipe in a manner to shield it from anyone making contact with it This heater is not designed for use with straight bio diesel Blends o...

Страница 5: ...0 25 0 07 0 21 0 05 0 16 0 04 0 10 0 03 Air Flow CFM 49 41 28 20 Power Consumption watts 34 23 13 9 Power Consumption at Start watts 100 Fuel Type Diesel Nominal Voltage 12 Volt Lower Voltage Limit 1...

Страница 6: ...iption Operating Switch 2 Sided Mounting Tape Description Mounting Plate Mounting Plate Seal Description Wiring Harness 3 2M 10 5 Power Harness 30A Fuse 2 5M 8 Fuel Pump Harness 2M 6 Switch Harness De...

Страница 7: ...ge Hex Nut Brass Hex Nut Brass Securing Body Fuel Metering Pump Fuel Pump Holder Black Rubber Fuel Line 0 5M 18 5mm ID Z Mounting Bracket Fuel Line 8m ID 1 5mm OD 5mm Small Fuel Line Clamps 9 11 mm QT...

Страница 8: ...Heater Works The fuel pump delivers fuel to the combustion chamber The combustion air blower delivers air to the combustion chamber A glow pin is used to ignite the fuel air mixture The heat from the...

Страница 9: ...where inside the cabin provided you adhere to the following conditions Combustion air intake exhaust and fuel inlet connections must be on outside of the vehicle Heater must be mounted on flat surface...

Страница 10: ...ual components openings should be made For ease of installation fasten the mounting plate to the heater and make exhaust combustion air intake and fuel connections at the base of the heater before mou...

Страница 11: ...11 Heater Mounting Figure M3 Combustion air Seal Exhaust Fuel Line Wiring Harness Heater Flange...

Страница 12: ...12 Heater Mounting Figure M4 2 1 8 3 x 2 4 x 5 Rectangle...

Страница 13: ...mponents provided System Layout Considerations Keep the length of the fuel system short as possible Mount the fuel pump as close to the fuel pickup as possible pump pushes better than it sucks Minimiz...

Страница 14: ...g angle is observed to avoid cavitation Figure F3 Fuel Source Connect directly into the fuel tank using our dedicated fuel pickup tube Figure F4 Teeing into the existing vehicle fuel lines is not reco...

Страница 15: ...as shown in Figure F4 Position fuel pick up 4 from bottom of tank for round tanks and 1 for flat tanks cut tube as necessary Fuel Line Connections Route fuel lines from the fuel pick up pipe to the h...

Страница 16: ...s Connects switch and power harness to the heater harness Refer to Main Harness Connections Legend for details B Power Harness 2 Core 3 2M 10 5 Long Red White Black White Route power harness section f...

Страница 17: ...inal Wire Color Function 1 White Switch 2 Blue Switch 3 Yellow Fuel Pump 4 Red White Main Power 5 Red Switch 6 Green Switch 7 Yellow Fuel Pump 8 Black White Main Power Open end view of main heater har...

Страница 18: ...able to sense the temperature of the cabin area being heated Route the harness from the heater to the switch location Remove the 4 screws and backing plate and connect harness as shown in Figure F3 R...

Страница 19: ...t operating mode and set timed shutdown and timed startup functions It also facilitates troubleshooting by providing diagnostic codes Operation Buttons and Display Icons Programming Keys 1 On Off Sele...

Страница 20: ...argo and cabin heating applications This mode allows you to set the target cabin temperature from 8 C to 36 C As measured at the Control Switch Switching Operating Modes To switch heater between Gear...

Страница 21: ...tting establishes infinite run time Time setting will be retained for all future start ups Count down time will be displayed Heater will continue to operate until the countdown reaches 0 Heater will t...

Страница 22: ...d Set the desired start time Third Set the desired stop time Important Note Once the Automatic Start Time or Automatic Stop Time are set the operating switch will retain these settings and the timer f...

Страница 23: ...the clock time Press to proceed to setting Automatic Stop Time Upper Dot in Colon ONLY appears Flashing Set Automatic Stop Time Once your Clock Time and Automatic Start Time have been set and you hav...

Страница 24: ...ed air out of the system using the controller Press 5 Times to activate fuel pump Run fuel pump until fuel reaches the heater Press to Shut the Fuel Pump Off Running Blower Only Press and Hold 3 Secon...

Страница 25: ...w point if proper incline cannot be maintained Route the exhaust pipe from the heater using p clamps provided Route away from the vehicle slip stream Combustion Air Intake Considerations The combustio...

Страница 26: ...26 Exhaust Combustion Air Intake Connections 25mm Combustion Air Intake Min 0 4M 8 Max 1 0M 39 24mm Exhaust Min 0 4M 8 Max 2 0M 78 Figure A1...

Страница 27: ...Install protective covers or shields as required Position hot air outlet so that it cannot be blocked or otherwise obstructed it should not point directly towards operator nor control switch Ensure pr...

Страница 28: ...onds 4 Stabilization Phase To further establish combustion the glow pin remains on and the fuel air mixture is slowly increased The flame sensor monitors the increasing temperature at the heat exchang...

Страница 29: ...hamber and cool down the heat exchanger The cool down cycle will last approximately 4 minutes Safety Systems The heater is equipped with several control features to protect itself and the operator Sys...

Страница 30: ...d is continuously monitored If the fan motor does not start or if the speed deviates by more than 40 the heater will turn OFF after 60 seconds Emergency Shut Down In event of an emergency shut down th...

Страница 31: ...tions and scratches or buildup on the heating element Wipe the glow pin clean with a soft cloth only do not use anything abrasive to clean the glow pin If the glow pin shows any signs of wear or damag...

Страница 32: ...anual for further direction No Error Codes Detected If the heater does not attempt start and there is not an error code on the operating switch follow these procedures in order shown 1 Ensure that the...

Страница 33: ...xhaust Source of Ignition The heater uses a glow pin as a source of ignition Normally when this fails it will create an open or short circuit and yield error code 5 or 6 However in some cases the glow...

Страница 34: ...n as required 6 Glow Pin Short Circuit Check glow pin connectors and resistance across glow pin Should be 0 8 Replace glow pin as required 7 Blower Motor Open Circuit Check blower motor wiring blower...

Страница 35: ...www parkingheaterproducts com help dksi com 877 508 3900 Unit B 1465 Kebet Way Port Coquitlam British Columbia Canada V3C 6L3 PHP 022021 TM20A REV2...

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