Weil-McLain UO-5 CV, UO-4 CV, UO-3 CV manual Inspect/Prepare Installation Site Prepare the Burner

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Inspect/Prepare Installation Site Prepare the Burner

Low Firing Rate Baff e

The AFG Low Firing Rate Baffle (LFRB) reduces the air flow and pressure. The LFRB is sometimes used for firing rates under 1.00 gph as listed in Table 4. Refer to the appliance manufacturer’s in- structions. Do not omit the LFRB when specified. Omitting the baffle when specified or installing the baffle when not specified could result in impaired burner performance.

Burner fuel unit

yVerify that the burner fuel unit is compatible with the oil supply system. For more details, refer to the pump manufacturer’s instructions provided with the burner.

Attach air tube (if not already installed)

If using a flange and gasket, slide them onto the air tube. Then attach the air tube to the burner chassis using the four sheet metal screws provided. Refer to Figure 4 for details.

Nozzle and Pump Pressure

!WARNING Correct Nozzle and Flow Rate Required

Incorrect nozzles and flow rates could result in impaired combus- tion, under-firing, over-firing, soot- ing, puff-back of hot gases, smoke

and potential fire or asphyxiation hazards.

Use only nozzles having the brand, flow rate (gph), spray angle and pattern specified by the appliance manufac- turer.

Follow the appliance manufacturer’s specifications for the required pump outlet pressure for the nozzle, since this affects the flow rate.

yNozzle manufacturers calibrate nozzle flow rates at 100 psig.

yWhen pump pressures are higher than 100 psig, the actual nozzle flow rate will be greater than the gph stamped on the nozzle body. (Example: A 1.00 gph nozzle at 140 psig = 1.18 gph)

Securely tighten the nozzle (90 torque inch pounds). For typical nozzle flow rates at various pressures refer to Table 5.

Table 4. AFG Reduced Firing Rates (with LFRB)

Burner head type

Low Firing Rate Baffle installed

F0

up to 0.65 gph

F3 or L1

up to 0.85 gph

F4 or F6

up to 0.90 gph

V1

up to 1.00 gph

Table 5. Nozzle Flow Rate by Size

Nozzle f ow rate U. S. gallons per hour of No. 2 fuel oil when pump pressure (psig) is:

Nozzle

125

140 psi

150 psi

175 psi

200 psi

size

psi

 

 

 

 

(rated at

 

 

 

 

 

100 psig)

 

 

 

 

 

 

 

 

 

 

 

0.40

0.45

0.47

0.49

0.53

0.56

0.50

0.56

0.59

0.61

0.66

0.71

0.60

0.67

0.71

0.74

0.79

0.85

0.65

0.73

0.77

0.80

0.86

0.92

0.75

0.84

0.89

0.92

0.99

1.06

0.85

0.95

1.01

1.04

1.13

1.20

0.90

1.01

1.07

1.10

1.19

1.27

1.00

1.12

1.18

1.23

1.32

1.41

1.10

1.23

1.30

1.35

1.46

1.56

1.20

1.34

1.42

1.47

1.59

1.70

1.25

1.39

1.48

1.53

1.65

1.77

1.35

1.51

1.60

1.65

1.79

1.91

1.50

1.68

1.77

1.84

1.98

2.12

1.65

1.84

1.95

2.02

2.18

2.33

1.75

1.96

2.07

2.14

2.32

2.48

2.00

2.24

2.37

2.45

2.65

2.83

 

 

 

 

 

 

2.25

2.52

2.66

2.76

2.98

-

 

 

 

 

 

 

2.50

2.80

2.96

-

-

-

 

 

 

 

 

 

Install burner nozzle (if not already in- stalled)

1.Remove the plastic plug protecting the nozzle adapter threads

2.Place a 3/4” open-end wrench on the nozzle adapter. Insert the nozzle into the adapter and fin- ger tighten. Finish tightening with a 5/8” open-end wrench. Use care to avoid bending the burner head support legs or electrodes. If you remove the head to replace the nozzle (type “L1”/“L2” or “V1” heads), carefully reconnect the head to the nozzle adapter, making sure that the head support makes contact with the nozzle adapter shoulder. Refer to Figure 5 or 6.

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6104BAFG R06

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Contents R02 01/09 To the Professional, Qualif ed Installer or Service Agency Potential for Fire, Smoke and Asphyxiation HazardsTo the Homeowner or Equipment Owner Information To Be Used Only By Qualif ed Service Technicians Table of ContentsHazard Definitions FeatureGeneral Information Indicates a hazardous situGeneral Information To the Owner Burner Specif cationsWeekly Air Tube Combination ATC codes General SpecificationsInspect Chimney or Direct Vent System Tion Hazard Inspect/Prepare Installation SiteClearances to burner and appliance Chamber DimensionsCombustion chamber Burner retrof t- ting NozzleInspect/Prepare Installation Site Prepare the Burner Mount burner on appliance Prepare the BurnerBurner Dimensions Check/Adjust ‘Z’ Dimension ‘F’ headsCheck/Adjust ‘Z’ Dimension L1 & L2 Heads Fuel Line Valves and Filter Installing the Oil Tank and Supply SystemBurner installed at jobsite Wire burnerSpecial wiring required with covered burners Frozen Plumbing Water Damage HazardFeatures WiringBurner Controls GeniSys Model 7505 Control Fire or Explosion HazardBurner Controls Light Color On Continuously Flashing Reset Button OperationControl System Features Typical Burner WiringResetting From Restricted or Hard Lockout Cad Cell Resistance IndicatorStart up burner/set combustion Hot Gas Puff-Back Heavy Smoke HazardStartup / Checkout Check Safety FeaturesStartup/Checkout Set combustion with instrumentsShutting the Burner Off Perform regular maintenanceReplace the blower wheel Blower wheel assemblyPage Description Warranty

UO-3 CV, UO-4 CV, UO-5 CV specifications

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