Prepare The Burner; General; Mount Burner On Appliance; Connect Fuel Lines - Beckett NX Manual

Inspect/Prepare |nstallation Site
Install two oil duty rated, thermally-operated, spring-
loaded shutoff valves in accessible locations on the
oil supply line to comply with the NFPA31 Standard.
Locate one close to the tank and the other close to
the burner, upstream of the filter.
Also install a generous capacity filter, rated for 50
microns or less, inside the building between the
fuel tank shutoff valve and the burner. Locate both
the filter and the valve close to the burner for ease
of servicing.
Prepare the Burner
• General
In most cases, the burner is ready to mount to the
appliance. There can be situations where the burn-
er needs to be reconfigured to perform properly in
the appliance. Review the appliance manufactur-
er's specifications prior to installing to determine if
any modification is required to properly configure
the burner.
Instruction on how to perform the following burner
preparation tasks can be found in the Professional
Maintenance section.
Remove / install burner nozzle
Check head/air adjusting plate
Mount Burner on Appliance
Verify that the air tube installed on the burner pro-
vides the correct insertion depth. Bolt the burner
to the appliance using the factory-welded flange.
Note that the end of the tube will extend into the
chamber on UO-4 and UO=5 boilers.
• Connect Fuel Lines
Do Not Install By=pass Plug
with 1=Pipe System
Failure to comply could cause immediate pump
seal failure, pressurized oil leakage and the po=
tential for a fire and injury hazard.
• The burner is shipped without the by-pass plug in-
stalled.
• Install the by-pass plug in two-pipe oil supply systems
ONLY.
zACAUT|ON Oil
Supply Pressure
Din,
Control Required
Damage to the filter or pump seals could cause
oil leakage and a fire hazard.
• The oil supply inlet pressure to the burner cannot
exceed 3 psig.
• Insure that a pressure limiting device is installed
in accordance with the latest edition of NFPA 31.
• Do NOT install valves in the return line.
• Gravity Feed Systems: Always install an anit-
siphon valve in the oil supply line or a solenoid
valve (RWB Part # 2182602U)in the pump/noz-
zle discharge tubing to provide backup oil flow
cut-off protection.
The burner is supplied with either a one-stage
pump or a two-stage pump based on the oil supply
system requirements. Consult the instructions pro-
vided with the pump for installation specifications.
When installing a one-pipe system, connect the
inlet line to the pump inlet. The fuel pump may be
installed with gravity feed or lift. The maximum al-
lowable lift for a single pipe installation is 8 ft.
When installing a two=pipe system, remove the
1/16" pipe by-pass plug from plastic bag attached
to fuel unit. Remove 1/4" plug from return port.
Insert and tighten the by-pass plug. Attach return
and inlet lines. The return line should terminate ap-
proximately 3-4" above supply line inlet. Failure to
do this may introduce air into the system and could
result in loss of prime.
Wiring Connections Diagram
Refer to the appliance manufacturer's wiring dia-
gram prior to connecting the burner wiring. All wir-
ing must be in accordance with the latest revision of
National Electric Code NFPA 70 and all local codes
and regulations.
The R7184 primary control with valve-on delay and
burner motor-off delay, shown in Figure 3, requires
a constant 120 volt AC power source supplied to
the black wire on the control. (Referring to Figure 4
and the appliance manufacturer's instructions.) The
red wire goes to the appliance limit circuit. Please
note that other control manufacturers may use dif-
ferent wire colors for power and limit connections.
RWB 6104 WMNX
Page 7