Page 47 - Webster Service Manual

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One-Pipe Installation
Recommended only when bottom of tank is above fuel
unit, unless pump code ends in 15.
1.
Remove BYPASS PLUG if installed, through applica-
ble INLET PORT.
2.
Connect inlet line to preferred INLET PORT and
NOZZLE PORT to NOZZLE SYSTEM.
3.
Plug all unused ports securely.
4.
Start burner and bleed all air from the system by
opening VENT PLUG. Close VENT securely when oil
flow in tube is clear , if pump is equipped with special
vent plug. Secure GAUGE PORT PLUG on units not so
equipped when oil appears leaking out.
Two-Pipe Installation
1.
Insert BYPASS PLUG if not installed, through appli-
cable INLET PORT.
2.
Connect inlet line to preferred INLET PORT and
NOZZLE PORT to NOZZLE SYSTEM
3.
Connect return line to preferred RETURN PORT.
4.
Plug all unused ports securely.
5.
Start burner. Two-stage pumps will self-vent. If single
stage and code ends in3 or 4, bleed all air from system
by opening VENT PLUG. Close VENT securely when
oil flow in tube is clear, if pump is equipped with special
vent plug. Secure GAUGE PORT PLUG on units not so
equipped when oil appears leaking out.
Mounting for One-Pipe Systems
Gravity Feed Systems (Diagram A)—Fuel-units may be
mounted in any position including shaft up and shaft
down. See Positions 1 through 4.
Non-Gravity Feed Systems (Diagram B) — R Series
Fuel Units may
only
be mounted upright, Position 1; or
rotated 90° with nozzle down, Position 2. Other mount-
ing positions are not recommended.
DIAGRAM A - ONE PIPE, GRAVITY FEED SYSTEM