Beckett CF800, CF500 manual Connect fuel lines, Do Not Install By-pass Plug with 1-Pipe System

‰Fuel unit by-pass plug

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.

yThe burner is shipped without the by-pass plug in- stalled.

yIntall the by-pass plug in two-pipe oil supply systems ONLY.

yThe CF500 and CF800 burners are shipped without the by-pass plug installed in the fuel line.

yThe by-pass plug must NOT be installed when using with a one-pipe oil system.

yThe by-pass plug MUST be installed when using a two-pipe oil system.

Connect fuel lines

‰Oil supply/return lines

Install Oil Supply To

Specifications

Failure to properly install the oil supply system could cause oil leakage, equipment malfunction, puff-back of hot gases, heavy smoke, asphyxiation, explosion and fire hazards.

yCarefully install the oil supply lines, fittings and com- ponents using the guidelines provided in this section.

yThe oil supply must comply with the latest edition of NFPA 31 (Canada CSA B139) and all applicable codes.

yDo NOT install valves in return lines.

yIf 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).

y	Install the oil tank and oil lines in accordance with all
y	applicable state and local codes.
	Size the oil supply and return lines using the guidelines
	given in the fuel unit literature included in the literature
	envelope. Oil line flow rate will equal the burner rate for

Table 3. Fuel Unit gearset capacity

Fuel unit model number	Gearset capacity (GPH)
A2VA-7116	17
A2YA-7916	20
B2VA-8216	21
B2YA-8916	25
B2TA-8248	21

for the firing rate for one-pipe systems. Locate the filter immediately adjacent to the burner fuel unit.

yInstall two high-quality shut-off 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 filter.

‰Burner fuel flow

yOne-pipe systems – See Figure 7 for the fuel flow path. y Figure 7 is based on type B fuel unit.

y Oil supply connects to one of the fuel unit inlet ports.

yTwo-pipe systems – See Figure 8 for the fuel flow paths

for two-pipe oil systems.

y Figure 8 is based on type B fuel unit .

y Oil supply connects to one of the fuel unit inlet ports. Oil return connects to the fuel unit return port. (Install the by-pass plug in the fuel unit for two-pipe sys- tems.)

yNozzle pressure – The fuel unit nozzle port pressure is factory set at 140 psig. Some original equipment manufacturer burner applications may call for a lower pressure to obtain a required firing rate. Do not change this pressure unless directed to do so by the appliance manufacturer.

Figure 7 - One-pipe oil flow with “B” pump

125-200 psig

125-200 psig

3502

Figure 8 - Two-pipe oil flow with “B” pump

one-pipe systems. For two-pipe systems, refer to Table

2 for the fuel unit gear set capacity - the rate at which

fuel is recirculated when connected to a two-pipe system.

However, size two-pipe oil lines based on this flow rate.

y Use continuous lengths of heavy-wall copper tubing,

routed under the floor where possible. Do not attach fuel

lines to the appliance or to floor joists if possible. This will

reduce vibration and noise transmission problems.

y Install an oil filter sized to handle the fuel unit gearset flow

capacity (Table 2) for two-pipe systems. Size the filter

125-200 psig

Legend

aReturn port

bNozzle port

cOil valve

dNozzle & adapter

125-200 psig

3503

gInlet port

kReturn line to oil tank p Air bleed valve

6104 BCF5 R06 Page 9