Beckett BRYAN STEAM CF1400 Manuel D’Utilisation

12

Form 6104 BCF23-R05

Models CF1400 and CF2300 are shipped with the 
pump bypass plug installed.
Do not remove the bypass plug from the pump. It is 
required for step-fi ring (Lo/Hi) operation.
Do not operate the burner unless a return line 
or bypass loop is installed or the pump seal will 
rupture.  
Carefully comply with the following instructions 
provided in this section of the manual.

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Connect fuel lines

Fuel unit by-pass plug

The burner is shipped with a by-pass plug installed in the 
fuel unit. For low/high operation, the by-pass plug must 
be left in the fuel unit, regardless of the fuel system used 
(one-pipe with by-pass loop or two-pipe). Do not remove 
the by-pass plug.

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Oil supply/return lines

Install the oil tank and oil lines in accordance with 
all applicable codes.
Size the oil supply and return lines using the 
guidelines given in the fuel unit literature included in 
the literature envelope. Oil line fl ow rate will equal 
the burner rate for one-pipe systems. For two-pipe 
systems, refer to Table 3 for the fuel unit gearset 
capacity - the rate at which fuel is recirculated when 
connected to a two-pipe system. Size two-pipe oil 
lines based on this fl ow rate.
Use continuous lengths of heavy-wall copper 
tubing, routed under the fl oor where possible. Do 
not attach fuel lines to the appliance or to fl oor 
joists if possible. This reduces vibration and noise 
transmission problems.
Install an oil fi lter sized to handle the fuel unit 
gearset fl ow capacity (Table 3) for two-pipe systems. 
However, size the fi lter for the fi ring rate for one-
pipe systems. Locate the fi lter immediately adjacent 
to the burner fuel unit.
Install two high-quality shutoff valves in accessible 
locations on the oil supply line. Locate one valve 
close to the tank. Locate the other valve close to the 
burner, upstream of the fuel fi lter.

Burner fuel fl ow

One-pipe systems – See Figure 9 for the fuel fl ow paths 
for high-fi re and low-fi re operation. The low-fi re by-pass 
regulation is done internally for type  B fuel units. Oil 
supply connects to one of the fuel unit Inlet ports.
Two-pipe systems – See Figure 10 for the fuel fl ow 
paths for high-fi re and low-fi re operation. The low-fi re 
by-pass regulation is done internally for type B fuel units. 
Oil supply connects to one of the fuel unit Inlet ports. Oil 
return connects to the fuel unit Return port.
Low-fi re/high-fi re operation – The fuel unit nozzle port 
pressure is factory set at 300 psig.

At high fi re, full pressure (300 psig) is applied at the 
oil nozzle, causing full input.
At low fi re, the by-passing is done inside the fuel 
unit when the by-pass valve operates.
This by-passing of oil reduces the oil pressure at the 
nozzle (to between 125 psig and 175 psig), reducing 
the input.

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One-pipe oil system by-pass loop

Refer to Figure 9 (item m). Note the addition of a fi eld-
installed by-pass loop (use 3/8” copper tubing) from the 
fuel unit Return port to the Inlet port. This line is required 
for low/high operation. It simulates the fl ow of a two-
pipe system at the fuel unit. 

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Carefully install the oil supply lines, fi ttings  and 
components using the guidelines provided in this 
section.
The oil supply must comply with the latest edition 
of NFPA 31 (Canada CSA B139) and all applicable 
codes.
Do NOT install valves in the return line.
If the oil supply inlet pressure to the pump exceeds 3 
psig or for gravity feed systems, install an oil safety 
or pressure reducing valve (Webster OSV, Suntec 
PRV or equivalent). 

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