Weil-McLain UO-3 CV, Instruction Manual

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Fuel supply below the level of the burner
When the fuel supply is more than eight feet below
the level of the burner, a two-pipe fuel supply system
is required. Depending on the fuel line diameter and
horizontal and vertical length, the installation may
also require a two-stage pump. Consult the fuel unit
manufacturer’s literature, included with the burner, for lift
and vacuum capability.
Fuel line installation
Continuous lengths of heavy wall copper tubing are
recommended.
Always use fl are fi ttings. Never use
compression fi ttings.
Always install fi ttings in accessible locations. Proper
routing of fuel lines is required to prevent air cavitation
and vibration.
Wiring Connections Diagram
Figure 6. – Outside Buried Tank-Lift System
Figure 7. – Burner Connections.
Power Cord
Burner packaged with appliance
- Refer to
appliance manufacturer’s wiring diagram for
electrical connections.
Burner installed at jobsite
- Refer to Figures 7a
and 7b, for typical burner wiring, showing cad
cell primary controls. Burner wiring may vary,
depending on primary control actually used. Refer
to the appliance manufacturer’s wiring diagram
prior to connecting the burner wiring. All wiring
must be in accordance with the latest revision of
national Electric Code NFPA 70 and all local codes
and regulations. In Canada, all wiring is to be in
accordance with the Canadian Electrical Code, Part 1.
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To further protect the fuel supply
system and reduce nozzle ori
fi ce
plugging with fi ring rates below 0.75 gph, a dual fi ltration
system can be installed. This typically consists of a 50
micron primary
fi lter, located near the fuel tank and a
secondary fi lter rated for at least 10 microns located
near the burner.
NOTICE
Disconnect electrical power before installing or
servicing the burner.
Provide ground wiring to the burner, metal control
enclosures and accessories. (This may also be
required to aid proper control system operation.)
Perform all wiring in compliance with the National
Electrical Code ANSI/NFPA 70 (Canada CSA C22.1)
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Electrical shock can cause severe personal
injury or death.
Electrical Shock Hazard
Incorrect Wiring Will
Result in Improper Control
Operation
GeniSys wiring label colors may not match the wire
colors of the burner or other manufacturers’ controls.
The GeniSys Control should be wired according to
the appliance manufacturer’s instructions. y
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Section: Inspect/Prepare Installation SIte