Lanair HI320 - Manual (Page 80)

7. Use 1/2 “ inside diameter (.493 steel pipe), or 1/2 “ outside diameter copper throughout
the suction supply line and pick up tube. When installing a Lanair Waste Oil Storage
Tank, follow the plumbing directions included with the tank.
8. Use thread sealing compound on all pipe thread connections. Do not use Teflon tape!
9. Install the check valve and suction line strainer on the bottom of the pick up tube. Keep
the suction line strainer 6” off the bottom of the tank. The arrow on the check valve
shows the proper direction for flow. Consider accessibility for cleaning.
10. Install a 1/2 “ NPT pipe union in the pick up for ease of service.
11. Install the primary strainer before the pump. The arrows on the strainer show the proper
direction for flow.
12. Install the vacuum gauge in the suction line. This gauge will indicate when service is
needed on the primary strainer or pump. It will also indicate a suction line leak as well
as low fuel.
13. Install a 1/2" inside diameter (.493 steel pipe), or 1/2 “ outside diameter copper tube
from the bottom of the Oil Bypass Regulator (the port marked “T”) into the fuel tank for
an overflow return line.
Important: The overflow return line must return straight into the tank. No elbows may be
used. This line should not be submerged in the oil. Failure to install this line
properly will result in an overfire condition, and void the warranty.
14. Do Not allow the fuel level in the tank to cover the overflow return line.
15. Install the fuel supply line from the pump to the Oil Bypass Regulator (Port marked “P”)
using a 1/2" inside diameter (.493 steel pipe), or 1/2 “ outside diameter copper tube.
16. Install the fuel supply line from the Oil Bypass Regulator (Port marked “B”) to the inlet
port on the left side of the Burner using 1/2" inside diameter (.493 steel pipe), or 1/2 “
outside diameter copper tube. The maximum run is 25 feet.
17. Install a union in the fuel supply line at the Burner for service.
18. Install a union in the fuel supply line at the Oil Bypass Regulator for service.
19. Install a shut off valve in the fuel supply line at the Oil Bypass Regulator for service.
20. Use 37º flare fittings on all copper tube connections. Do not use compression
fittings.
21. Keep the fuel supply line 1” off un-insulated outside walls.
22. The fuel supply line must maintain an upward rise to the burner.
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