• Some steel chambers may not require liners because the appliance was designed and tested for use with flame retention burners. Refer to the manufacturer’s instructions. Combustion chamber — Burner retrof tting Verify that the appliance combustion chamber provides at least the minimum dimensions given in Table 3. Table 3. Chamber Dimensions Chamber Dimensions (inches) Firing Rate (GPH) Round I.D. Rectangular Height Floor to nozzleWidth Length 0.50 8 7 8 12 5-6 0.75 9 8 9 12 5-6 1.00 10 9 10 12.5 5-6 1.25 11 10 11 12.5 5-6 1.50 12 11 12 13 6-7 2.00 14 12 15 13.5 6-7 2.50 16 13 17 14 7-8 3.00 18 14 18 15 7-8 6104BAFG R06 Page 7 Inspect/Prepare Installation Site Prepare the Burner Low Firing Rate Baff e The AFG Low Firing Rate Baffl e (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 instructions. 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 • Verify 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 fl ow rates could result in impaired combustion, under-fi ring, over-fi ring, sooting, 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 manufacturer. Follow the appliance manufacturer’s specifi cations for the required pump outlet pressure for the nozzle, since this affects the fl ow rate. • Nozzle manufacturers calibrate nozzle fl ow rates at 100 psig. • When 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 Baffl e 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 size (rated at 100 psig) 125 psi 140 psi 150 psi 175 psi 200 psi 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 installed) 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 finger 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. Page 8 6104BAFG R06 3. If the nozzle is already installed, remove the nozzle line assembly to verify that the nozzle size and spray pattern are correct for the application (per appliance manufacturer’s information). Verify that the electrode tip settings comply with Figure 3. 4. If the nozzle is not installed, obtain a nozzle from the manufacturer, having the capacity and spray angle specified in the appliance manufacturer’s information. For conversions or upgrades, when information is not available for the application: • Refer to Table 6 to select the mid-range nozzle spray angle for the head type being used. • Fire the burner and make sure the combustion is acceptable and the flame is not impinging on chamber surfaces. • If a shorter flame is needed, select a wider spray angle. If a longer flame is needed, select a narrower spray angle. • Either hollow or solid spray patterns may be used. If combustion results are not satisfactory with the selected spray pattern, try the other pattern. Table 6. Nozzle Spray Angles Recommended nozzle spray angles “F” head 70° or 80° nozzle “L1” & “L2” head 45°, 60°, or 70° nozzle “V1” head 45°, 60°...

Dieses Handbuch ist für folgende Modelle:
Konvektionsöfen - UO-3 CV (1.43 mb)
Konvektionsöfen - UO-5 CV (1.43 mb)