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Section 6 - Fuel Supply Pump/Piping

Visit our website at: www.lanair.com

17

General Requirements

1.

Mount the fuel supply pump in a horizontal position (shaft horizontal) near the fuel sup-
ply tank.

2.

The oil pump has a maximum suction lift of 14 feet. Suction lift is the length of pipe run
from the bottom of the pick up strainer to the fuel supply pump.

3.

The fuel pump/motor are intended for indoor use only.

4.

The fuel pump contains an internal strainer that periodically needs to be cleaned. This
internal strainer is mounted behind the pump cover. Before removing the pump cover
make sure you have a new gasket on hand. Contact the Lenan Customer Service
Department for the proper gasket for your model of pump, at 800-753-1601.

5.

Install the suction supply line from the inlet side of the fuel pump into the fuel tank
opposite the drain.

6.

Install a 1/2” inside diameter (.493) steel pipe, or 1/2” outside diameter copper through-
out the suction supply line and pick up tube. The use of smaller line, or rubber, plastic or
hydraulic line is unsafe and will void your warranty.

7.

Use thread sealing compound on all pipe thread connections.

Do Not Use Teflon Tape.

8.

Install the suction line strainer in the suction line. Make sure the suction line strainer is 6”
off the bottom of the tank. The suction line strainer may be mounted horizontally or ver-
tically. Consider accessibility.

9.

Install a 1/2” NPT pipe union between the suction line strainer and the pick up tube to
allow for service on the pick up tube.

10.

Install the check valve (arrow facing towards the pump) on the bottom of the pick up
tube.

11.

Install a vacuum gauge in the suction line. This gauge will indicate when service is need-
ed on the strainer, pump or connections.

12.

Install a 1/2” inside diameter (.493) steel pipe, or 1/2” outside diameter copper from the
fuel by-pass regulator (port marked “O”) to the fuel supply pump. Do not allow this line
to protrude into the tank more that 1” The use of smaller line, or rubber, plastic or
hydraulic line is unsafe and will void your warranty.

13.

Do not allow the fuel level in the tank to cover the return line.

Section 13 - Service / Maintenance

QUESTIONS?... Contact Customer Service at 1-800-753-1601 M-F 8:00 am- 4:15 pm CST

36

Oil Pre-Heater Tune -Up
Kit (PN# 9869) Required.

Ref.

Part

No.

No.

Qty.

Description

1

8992

1

cartridge heater

2

9813

1

pre-heater face plate

3

9869

6

hex cap screw *

4

9869

4

o-ring 13/16" OD *

5

2901

1

oil block

6

9029

2

fitting

7

9869

2

o-ring 5/16" OD *

8

8498

1

oil gauge

9

7242

1

hex cap screw

10

9869

1

o-ring 1/2" OD *

11

7418

1

washer

12

7109

3

plug

13

9366

1

snap disc assembly

14

7242

1

button hex screw

* contained in tune up kit 9869

Maintenance - OIl Pre-Heater

1. Separate Air Pre-Heater from Oil

Pre-Heater

• Remove o-ring and discard(10).

2. Disassemble Oil Pre-Heater

• Remove o-ring and discard(10).
• Remove six hex cap screws (3)

from face plate (2) and discard.

• Remove oil cartridge heater (1).
• Remove four 13/16"OD o-rings

and discard(4).

• Remove three plugs (12) from oil

block (5)

• Remove hex cap screw (9) from

inside oil pre-heater block and
clean.

NOTE:

Do not discard (5).

Summary of Contents for DUCTABLE DHI-300

Page 1: ... Boilers 4109 Capital Circle Janesville Wisconsin 53546 608 752 1601 www lanair com Lanair Waste Oil Heaters Boilers 4109 Capital Circle Janesville Wisconsin 53546 608 752 1601 www lanair com 2006 Martrade LLC Lanair is a registered trademark of Martrade LLC P N L44 REVISED 1 06 Listed MH 14518 N ...

Page 2: ...ed photos diagrams and illustrations before beginning installation or operation These instructions should be fol lowed closely to achieve the best possible results If you have questions or concerns at any time during the installation stop the installation and contact a Lanair Service Representative Check to make sure you have all the required components needed for proper installation and operation...

Page 3: ...T Combustion chamber heat exchanger must be maintained in accordance with the installation operat ing instructions This extended warranty does not cover normal wear items such as gasket material chamber inserts nuts bolts labor costs etc The warranty card must be returned within ten 10 days of purchase date in order for this warranty to be valid Warranty is limited to original purchaser MANUFACTUR...

Page 4: ...trol 8 Waste Oil Fuel Oil Switch 9 Quick Disconnect Receptacle 10 Air Supply Inlet 11 Combustion Blower Motor Burner Assembly Performance Ratings Voltage 115 vac Cycles 60 hz Total Operating Amperage 5 8 Weight 31 lbs Oil Primary 0 2 amps Pre Heater Block 2 6 amps Ignitor Transformer 0 3 amps Installation Notes Visit our website at www lanair com 49 10 11 9 8 7 6 5 4 3 2 1 DHI Series Burner NOTE T...

Page 5: ...is properly installed 3 Plugged heat exchanger 3 Clean heater including manifold or chimney manifold and chimney 4 Wrong air pressure 4 See flame adjustment pages 29 31 5 Wrong fuel pressure or 5 See flame adjustment pressure fluctuating pages 29 31 See fuel piping page 17 6 Improper combustion blower 6 See flame adjustment setting or blower is defective pages 29 31 See fuel piping page 17 7 Oil p...

Page 6: ...l defective Test component B Burner attempts to fire 1 Low oil in supply tank or 1 Fill tank or drain and but does not establish a contaminated fuel clean tank flame 2 Plugged or worn nozzle 2 Clean or replace 3 Fuel pressure gauge 3 See section 6 Page 17 fluctuating pumping system 4 Pre heater switch is turned off 4 Turn switch on or test or defective or defective switch and cartridge heater cart...

Page 7: ...lube Orifice in nozzle is becoming plugged Reading drops to 0 PSI when the burner is off Dirt between the diaphragm and the seat in the by pass regulator Dirt between the plunger and the nozzle seat Leak in the plumbing connections Leak in the pre heater assembly damaged or missing o ring Fuel pre heater switch is off Steps to check the air operated fuel valve Disconnect the two transformer wires ...

Page 8: ...ll wires Do not run the heater with the cad cell wires disconnected Disabling the air operated fuel valve Note Most trouble shooting tests will require the air operated fuel valve to be disabled to do this Adjust the heater air filter regulator to 0 PSI Install jumper wire Vacuum Gauge reading hints No reading 0 1 HG Pump not operating Pump air locked and needs priming Refer to section 10 Vacuum l...

Page 9: ... use a power vent to overcome a down draft positive pressure An adequate make up air system is required when exhaust fans are used consult your heating contractor Section 14 Troubleshooting QUESTIONS Contact Customer Service at 1 800 753 1601 M F 8 00 am 4 15 pm CST 44 Initial Diagnosis When an operating problem occurs a determination must be made whether or not the fuel pump is pumping a sufficie...

Page 10: ... small plug spring large plug washer and diaphragm 4 Thoroughly clean and dry remaining parts 5 Re assemble using new small plug spring large plug washer and diaphragm Kit P N 9874 NOTE Pay close attention to the posi tions of the large and small plugs adjusting screw locking nut cap small plug spring large plug washer diaphragm body Fuel By Pass Regulator Assembly 1 Chimney Cap 2 Chimney Pipe 3 C...

Page 11: ...r shovel the ash from the combus tion chamber Inspect the combustion chamber and target brick Use care when cleaning the combustion chamber area so the target brick is not disturbed Insufficient or irregu lar cleaning intervals will cause inefficiency random shutdowns and extreme damage to the combustion chamber 6 Before replacing the gun chamber access doors replace the white gasket seals on the ...

Page 12: ...t have its own separate Class A chimney 3 Inspect and maintain the chimney on an annual basis Section 13 Service Maintenance Visit our website at www lanair com 41 Cleaning Combustion Chamber Heat Exchanger 1 Turn thermostat to the lowest setting the heater must be completely cool to the touch before attempting to clean the heater place the fan limit on the manual position to start the fan and sho...

Page 13: ...ng Follow chimney manufacturer s instruction 16 The chimney must be capable of producing a negative 02 W C draft when cold and 06 W C draft when hot Refer to Section 5 Draft Instructions Refer to Section 3 10 for typical Chimney Installation HORIZONTAL VERTICAL NOTE Barometric Damper may be mounted horizontally or vertically Angle gate pins must be horizontal level or parallel to floor for proper ...

Page 14: ...ssembly from the burner housing Disassemble and clean all parts as instructed on pages 34 37 3 Using a 1 4 wrench carefully remove the one piece ignitor from the air pre heater 4 Install a new one piece ignitor P N 3730 to the top of the air pre heater NOTE The tips of the ignitor should be 3 8 above the center of the nozzle assembly and should extend approximate ly 1 8 beyond the end of the nozzl...

Page 15: ...need to be cleaned more frequently Your vacuum gauge will help you determine when the filter needs cleaning The vacuum gauge reading should not exceed 5 HG of vacuum If it does the strainer needs cleaning 1 Disconnect power to the heater 2 While holding the lower housing unscrew the center bolt on the top of the suction line strainer 3 Rinse the filter and lower housing in solvent 4 Air dry the st...

Page 16: ...it our website at www lanair com 37 Maintenance OIl Pre Heater cont 3 Clean Oil Pre Heater Block Clean oil pre heater block using a parts washer and brush NOTE Make sure all passages are clean Blow dry the oil pre heater block inspect ALL passages making sure they are clear and clean 4 Reassemble Oil Pre Heater Replace four 13 16 OD o rings 4 with new Replace cartridge heater NOTE Do not over tigh...

Page 17: ...rainer and the pick up tube to allow for service on the pick up tube 10 Install the check valve arrow facing towards the pump on the bottom of the pick up tube 11 Install a vacuum gauge in the suction line This gauge will indicate when service is need ed on the strainer pump or connections 12 Install a 1 2 inside diameter 493 steel pipe or 1 2 outside diameter copper from the fuel by pass regulato...

Page 18: ...el supply pump Install 1 2 O D min copper tubing or 1 2 schedule 40 pipe Failure to install this line properly will result in damage to your heater and will void your warranty Bottom View of the Aluminum Oil By Pass Regulator Figure 4 Section 13 Service Maintenance Visit our website at www lanair com 35 Maintenance Air Pre Heater cont 6 Clean all parts using a parts washer All passages must be tho...

Page 19: ... cartridge and snap disc assembly in the wiring junction box Disconnect fuel line and fitting 6 from the oil block 5 Disconnect fuel pressure gauge 8 and fitting from the oil block 5 Remove button hex screw 14 and washer 11 Lift pre heater assembly and care fully pull straight back Remove entire assembly from the burner Remove ignitor assembly 6 2 Remove Diaphragm Assembly from Air Pre Heater Care...

Page 20: ...lectrical service to the heater MUST be stranded 12 GA minimum 6 Install a manual service disconnect near the heater and label its function 7 The supply voltage must be maintained at a minimum 110 VAC 8 The electrical conductors from the main electri cal service must be within approved conduit 9 Keep all electrical conductors and conduit away from the chimney connector as well as any other hot sur...

Page 21: ...ash build up and flame NOTE Wear ade quate eye face and breathing protec tion MONTHLY Check combustion chamber and heat exchanger Clean if necessary Inspect fire brick NOTE Wear protec tive clothing ade quate eye face and breathing protec tion Do not breathe dust from the combustion chamber Wash thoroughly with soap and water after cleaning chamber Clean the chimney chimney connector and barometri...

Page 22: ...shed with the ther mostat 3 Use two conductor thermostat wire for the connection of the thermostat to the T T ter minals of the oil primary control that is mounted on top of the burners electrical box 4 Mount the thermostat 5 feet above the floor on an inside wall away from the heater s warm air path 5 The electrical current for thermostat is 24 V and is provided by the oil primary control 6 Keep ...

Page 23: ...e deter mined and corrected before further use over firing the unit is normally what causes this condition The Fan Limit Control is located on the top on the front of the cabinet Barometric Draft Control The Barometric Draft Control automatically maintains a pre set chimney draft and is locat ed in the chimney connector Air Filter Regulator The Air Filter Regulator performs two functions It remove...

Page 24: ...By Pass regulator is located in the line between the outlet side of the pump and the burner Fuel Supply Pump The Fuel Supply Pump pumps fuel from your oil storage tank to the burner The Fuel Supply Pump should be located as close to the fuel supply tank as possible The Fuel Supply Pump must be mounted horizontally Shaft Section 12 Flame Adjustment Visit our website at www lanair com 29 Flame Adjus...

Page 25: ...l to flow into the container for several minutes This will flush any debris from the fuel line that could potentially plug the nozzle The vacu um gauge reading should not exceed 5 HG of vacuum Figure 8 Remove two yellow wires Figure 9 Install jumper wire Section 11 Burner Start Up Procedure QUESTIONS Contact Customer Service at 1 800 753 1601 M F 8 00 am 4 15 pm CST 28 15 Adjust the fuel pressure ...

Page 26: ...he air supply line to 30 PSI 5 Set the fan limit control slide switch to automatic 6 Check the combustion air adjustment baffle for proper setting Refer to Section 15 Flame adjustment 7 Set the room thermostat below room temperature OFF 8 Push the reset button on the oil primary control for 3 seconds 9 Turn the main electrical service ON 10 Flip the lighted rocker switch for preheating on the burn...

Page 27: ...he air supply line to 30 PSI 5 Set the fan limit control slide switch to automatic 6 Check the combustion air adjustment baffle for proper setting Refer to Section 15 Flame adjustment 7 Set the room thermostat below room temperature OFF 8 Push the reset button on the oil primary control for 3 seconds 9 Turn the main electrical service ON 10 Flip the lighted rocker switch for preheating on the burn...

Page 28: ...l to flow into the container for several minutes This will flush any debris from the fuel line that could potentially plug the nozzle The vacu um gauge reading should not exceed 5 HG of vacuum Figure 8 Remove two yellow wires Figure 9 Install jumper wire Section 11 Burner Start Up Procedure QUESTIONS Contact Customer Service at 1 800 753 1601 M F 8 00 am 4 15 pm CST 28 15 Adjust the fuel pressure ...

Page 29: ...By Pass regulator is located in the line between the outlet side of the pump and the burner Fuel Supply Pump The Fuel Supply Pump pumps fuel from your oil storage tank to the burner The Fuel Supply Pump should be located as close to the fuel supply tank as possible The Fuel Supply Pump must be mounted horizontally Shaft Section 12 Flame Adjustment Visit our website at www lanair com 29 Flame Adjus...

Page 30: ...e deter mined and corrected before further use over firing the unit is normally what causes this condition The Fan Limit Control is located on the top on the front of the cabinet Barometric Draft Control The Barometric Draft Control automatically maintains a pre set chimney draft and is locat ed in the chimney connector Air Filter Regulator The Air Filter Regulator performs two functions It remove...

Page 31: ...shed with the ther mostat 3 Use two conductor thermostat wire for the connection of the thermostat to the T T ter minals of the oil primary control that is mounted on top of the burners electrical box 4 Mount the thermostat 5 feet above the floor on an inside wall away from the heater s warm air path 5 The electrical current for thermostat is 24 V and is provided by the oil primary control 6 Keep ...

Page 32: ...and pri mary regulator Inspect the combus tion ash build up and flame NOTE Wear ade quate eye face and breathing protec tion MONTHLY Check combustion chamber and heat exchanger Clean if necessary Inspect fire brick NOTE Wear protec tive clothing ade quate eye face and breathing protec tion Do not breathe dust from the combustion chamber Wash thoroughly with soap and water after cleaning chamber Cl...

Page 33: ...lectrical service to the heater MUST be stranded 12 GA minimum 6 Install a manual service disconnect near the heater and label its function 7 The supply voltage must be maintained at a minimum 110 VAC 8 The electrical conductors from the main electri cal service must be within approved conduit 9 Keep all electrical conductors and conduit away from the chimney connector as well as any other hot sur...

Page 34: ... cartridge and snap disc assembly in the wiring junction box Disconnect fuel line and fitting 6 from the oil block 5 Disconnect fuel pressure gauge 8 and fitting from the oil block 5 Remove button hex screw 14 and washer 11 Lift pre heater assembly and care fully pull straight back Remove entire assembly from the burner Remove ignitor assembly 6 2 Remove Diaphragm Assembly from Air Pre Heater Care...

Page 35: ...el supply pump Install 1 2 O D min copper tubing or 1 2 schedule 40 pipe Failure to install this line properly will result in damage to your heater and will void your warranty Bottom View of the Aluminum Oil By Pass Regulator Figure 4 Section 13 Service Maintenance Visit our website at www lanair com 35 Maintenance Air Pre Heater cont 6 Clean all parts using a parts washer All passages must be tho...

Page 36: ...rainer and the pick up tube to allow for service on the pick up tube 10 Install the check valve arrow facing towards the pump on the bottom of the pick up tube 11 Install a vacuum gauge in the suction line This gauge will indicate when service is need ed on the strainer pump or connections 12 Install a 1 2 inside diameter 493 steel pipe or 1 2 outside diameter copper from the fuel by pass regulato...

Page 37: ...it our website at www lanair com 37 Maintenance OIl Pre Heater cont 3 Clean Oil Pre Heater Block Clean oil pre heater block using a parts washer and brush NOTE Make sure all passages are clean Blow dry the oil pre heater block inspect ALL passages making sure they are clear and clean 4 Reassemble Oil Pre Heater Replace four 13 16 OD o rings 4 with new Replace cartridge heater NOTE Do not over tigh...

Page 38: ...need to be cleaned more frequently Your vacuum gauge will help you determine when the filter needs cleaning The vacuum gauge reading should not exceed 5 HG of vacuum If it does the strainer needs cleaning 1 Disconnect power to the heater 2 While holding the lower housing unscrew the center bolt on the top of the suction line strainer 3 Rinse the filter and lower housing in solvent 4 Air dry the st...

Page 39: ...ssembly from the burner housing Disassemble and clean all parts as instructed on pages 34 37 3 Using a 1 4 wrench carefully remove the one piece ignitor from the air pre heater 4 Install a new one piece ignitor P N 3730 to the top of the air pre heater NOTE The tips of the ignitor should be 3 8 above the center of the nozzle assembly and should extend approximate ly 1 8 beyond the end of the nozzl...

Page 40: ...ng Follow chimney manufacturer s instruction 16 The chimney must be capable of producing a negative 02 W C draft when cold and 06 W C draft when hot Refer to Section 5 Draft Instructions Refer to Section 3 10 for typical Chimney Installation HORIZONTAL VERTICAL NOTE Barometric Damper may be mounted horizontally or vertically Angle gate pins must be horizontal level or parallel to floor for proper ...

Page 41: ...t have its own separate Class A chimney 3 Inspect and maintain the chimney on an annual basis Section 13 Service Maintenance Visit our website at www lanair com 41 Cleaning Combustion Chamber Heat Exchanger 1 Turn thermostat to the lowest setting the heater must be completely cool to the touch before attempting to clean the heater place the fan limit on the manual position to start the fan and sho...

Page 42: ...r shovel the ash from the combus tion chamber Inspect the combustion chamber and target brick Use care when cleaning the combustion chamber area so the target brick is not disturbed Insufficient or irregu lar cleaning intervals will cause inefficiency random shutdowns and extreme damage to the combustion chamber 6 Before replacing the gun chamber access doors replace the white gasket seals on the ...

Page 43: ... small plug spring large plug washer and diaphragm 4 Thoroughly clean and dry remaining parts 5 Re assemble using new small plug spring large plug washer and diaphragm Kit P N 9874 NOTE Pay close attention to the posi tions of the large and small plugs adjusting screw locking nut cap small plug spring large plug washer diaphragm body Fuel By Pass Regulator Assembly 1 Chimney Cap 2 Chimney Pipe 3 C...

Page 44: ... use a power vent to overcome a down draft positive pressure An adequate make up air system is required when exhaust fans are used consult your heating contractor Section 14 Troubleshooting QUESTIONS Contact Customer Service at 1 800 753 1601 M F 8 00 am 4 15 pm CST 44 Initial Diagnosis When an operating problem occurs a determination must be made whether or not the fuel pump is pumping a sufficie...

Page 45: ...ll wires Do not run the heater with the cad cell wires disconnected Disabling the air operated fuel valve Note Most trouble shooting tests will require the air operated fuel valve to be disabled to do this Adjust the heater air filter regulator to 0 PSI Install jumper wire Vacuum Gauge reading hints No reading 0 1 HG Pump not operating Pump air locked and needs priming Refer to section 10 Vacuum l...

Page 46: ...lube Orifice in nozzle is becoming plugged Reading drops to 0 PSI when the burner is off Dirt between the diaphragm and the seat in the by pass regulator Dirt between the plunger and the nozzle seat Leak in the plumbing connections Leak in the pre heater assembly damaged or missing o ring Fuel pre heater switch is off Steps to check the air operated fuel valve Disconnect the two transformer wires ...

Page 47: ...l defective Test component B Burner attempts to fire 1 Low oil in supply tank or 1 Fill tank or drain and but does not establish a contaminated fuel clean tank flame 2 Plugged or worn nozzle 2 Clean or replace 3 Fuel pressure gauge 3 See section 6 Page 17 fluctuating pumping system 4 Pre heater switch is turned off 4 Turn switch on or test or defective or defective switch and cartridge heater cart...

Page 48: ...is properly installed 3 Plugged heat exchanger 3 Clean heater including manifold or chimney manifold and chimney 4 Wrong air pressure 4 See flame adjustment pages 29 31 5 Wrong fuel pressure or 5 See flame adjustment pressure fluctuating pages 29 31 See fuel piping page 17 6 Improper combustion blower 6 See flame adjustment setting or blower is defective pages 29 31 See fuel piping page 17 7 Oil p...

Page 49: ...trol 8 Waste Oil Fuel Oil Switch 9 Quick Disconnect Receptacle 10 Air Supply Inlet 11 Combustion Blower Motor Burner Assembly Performance Ratings Voltage 115 vac Cycles 60 hz Total Operating Amperage 5 8 Weight 31 lbs Oil Primary 0 2 amps Pre Heater Block 2 6 amps Ignitor Transformer 0 3 amps Installation Notes Visit our website at www lanair com 49 10 11 9 8 7 6 5 4 3 2 1 DHI Series Burner NOTE T...

Page 50: ...T Combustion chamber heat exchanger must be maintained in accordance with the installation operat ing instructions This extended warranty does not cover normal wear items such as gasket material chamber inserts nuts bolts labor costs etc The warranty card must be returned within ten 10 days of purchase date in order for this warranty to be valid Warranty is limited to original purchaser MANUFACTUR...

Page 51: ...ed photos diagrams and illustrations before beginning installation or operation These instructions should be fol lowed closely to achieve the best possible results If you have questions or concerns at any time during the installation stop the installation and contact a Lanair Service Representative Check to make sure you have all the required components needed for proper installation and operation...

Page 52: ... Boilers 4109 Capital Circle Janesville Wisconsin 53546 608 752 1601 www lanair com Lanair Waste Oil Heaters Boilers 4109 Capital Circle Janesville Wisconsin 53546 608 752 1601 www lanair com 2006 Martrade LLC Lanair is a registered trademark of Martrade LLC P N L44 REVISED 1 06 Listed MH 14518 N ...

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