Follow information provided with the burner, the fuel pump, or the calcu- lation below to determine pipe size and length.
L = Line Length in feet H = Head in feet
Q = Firing rate in GPH
3/8” (0.95 cm) line | L = (6 | - 0.75 x H) / 0.0086 x Q) |
1/2” (1.27 cm) line | L = (6 | - 0.75 x H) / (0.00218 x Q) |
If tank is above the oil pump, then use the following calculation:
3/8” (0.95 cm) line | L = (6 | + 0.75 x H) / (0.0086 x Q) |
1/2” (1.27 cm) line | L = (6 | + 0.75 x H) / (0.00218 x Q) |
IMPORTANT: The recommended piping configuration is a single or two pipe system that is inserted into the top of the tank as shown in Figure 17 or 18. The two pipe system should be used in applications where the oil tank is considerably lower than the burner and the oil pump keeps losing its prime. The oil line should never be connected to the bottom of the oil tank if the oil tank is outdoors. Water in the bottom of the oil will freeze in the winter causing the oil line to freeze.
ONE PIPE SYSTEM
DO NOT INSTALL
Air |
| L = H + R | |
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Vent |
| Fuel Unit | |
Fill |
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| |
Pipe |
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| |
Oil | Inlet | ||
Valve | |||
Maximum | |||
Tank | |||
| One Pipe (H) | ||
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| Lift: 8 Ft | |
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| “R” | |
Primary |
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Filter |
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FIGURE 17: One-Pipe System
TWO PIPE SYSTEM
Remove 1/16” (0.16 cm) pipe
Insert a 1/4” MPT x flare adaptor into the
TABLE 8: Ratings & Physical / Electrical Data
The return line must terminate 3” to 4” above supply line in the oil tank. Failure to do this may introduce air into the system and could result in the loss of the prime. Refer to Figure 18.
| Outside Tank Fuel Unit | L = H + R | |
| Above Bottom of Tank | ||
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| ||
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| Primary |
| Air |
| Filter |
| Fuel |
| |
Fill | Vent | Inlet | |
| Unit |
| |
Pipe |
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| |
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| |
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| “H” |
| Oil |
| 3” - 4” |
| Tank |
| |
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| Use Protective Plastic |
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| “R” | Tubing in Concrete or as |
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| Local Codes Require |
FIGURE 18: Two-Pipe System
SOLENOID WIRING
DISCONNECT THE POWER SUPPLY BEFORE WIRING TO PRE- VENT ELECTRICAL SHOCK OR EQUIPMENT DAMAGE.
Lead wires on these devices are long enough to reach the junction box on most burner installations. Refer to Figure 19.
NOTE: Check the burner manufacturer’s installation sheets for the cor- rect solenoid wiring. All electrical wiring must be done in accordance with the local codes.
NOTE: Solenoid power requirements: 115 VAC, 0.1 Amp, 60 Hz
Bypass
Solenoid
Valve
Violet
To Power
ControlWhite
FIGURE 19: Solenoid Wiring
SECTION V: ELECTRICAL POWER
Electrical Power Connections
Field wiring to the unit must be grounded. Electric wires that are field installed shall conform to the temperature limitation for 63°F (35°C) rise wire when installed in accordance with instructions. Refer to Table 8 in these instructions for specific furnace electrical data.
Use copper conductors only.
Input | Output | Nominal |
|
|
| Burner |
| Air Temp. Rise | AFUE | Input Rate | ||
MBH (kW) | MBH (kW) | CFM (cm) | Amps |
| HP |
| RPM | Rotation | °F (°C) | GPH (Liter / H) | ||
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66 (19.3) | 53 (15.5) | 1050 (29.7) | 2.1 |
| 1/7 |
| 3450 | CCW | 45 - 75 (28 - 47) | 80 | 0.50 (1.9) | |
84 (24.6) | 67 (19.6) | 1250 (35.4) | 2.1 |
| 1/7 |
| 3450 | CCW | 45 - 75 (28 - 47) | 80 | 0.65 (2.5) | |
Input | Max. Outlet | Blower | Max Over | Total | Min. Wire | Blower Size | DFAA | DFAH | ||||
Air Temp | Size (awg) @ |
| Unit | Operation Wgt. | Operation Wgt. | |||||||
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| One Way |
| |||||||
MBH (kW) | °F (°C) | Hp | Amps | 75 ft. protect |
| Amps | In. (cm) | LBS/Kg | LBS/Kg | |||
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66 (19.3) | 165 (74) | 1/6 | 8.0 |
| 15 |
| 8.3 | 14 | 10 x 8 (25.4 x 20.3) | 175/79.4 | 158/71.7 | |
84 (24.6) | 165 (74) | 1/4 | 5.9 |
| 15 |
| 7.8 | 14 | 10 x 8 (25.4 x 20.3) | 175/79.4 | 158/71.7 | |
Annual Fuel Utilization Efficiency (AFUE) numbers are determined in accordance with DOE Test procedures.
Wire size and over current protection must comply with the National Electrical Code
Rotation when facing shaft end.
Unitary Products Group | 13 |