Beckett CF 2500/ 3500 Connect fuel lines, Fuel unit by-pass plug, Oil supply/return lines

Instruction Manual – Model CF2500/CF3500 Oil Burner

Connect fuel line(s)

•Install the oil lines using the following guidelines. Failure to comply could lead to equipment damage and present a risk of severe personal injury, death or substan- tial property damage due to leakage of oil and potential fire hazard.

•Use only flare fittings at joints and con- nections. Never use compression fittings.

•Install fittings only in accessible locations to assure any leak will be detected.

•Where joint sealing is needed, use only pipe dope. Never use Teflon tape. Tape strands can break free and damage the fuel unit.

•Never use a one-pipe oil system with a lift in excess of 2 feet with an H fuel unit. On two-pipe oil systems, verify that the suc- tion line vacuum does not exceed the fuel unit manufacturer’s recommendation.

❏Fuel unit by-pass plug

The CF2500A, CF2500 and CF3500A burners are shipped without the by-pass plug installed. You must install this plug on two- pipe systems. DO NOT install the by-pass plug in the fuel unit if connected to a one-pipe oil system. Failure to comply could cause fuel unit seal failure, oil leakage and potential fire and injury hazard.

❏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 flow 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 flow rate.

•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 reduces vibration and noise transmission problems

•Install an oil filter sized to handle the fuel unit gearset flow capacity (Table 3) for two-pipe systems. Size the filter for the firing rate for one-pipe systems. Locate the filter immediately adjacent to the burner fuel unit.

Figure 8a

One-pipe oil flow, one nozzle, low fire, “H” pump

			200 psig	g
			to
d	c	c	300 psig
200 psig				b
to				a
300 psig				p

c

3510

Figure 8b

One-pipe oil flow, two nozzles, high fire,“H” pump

			200 psig	g
d	c	c	to
			300 psig
200 psig				b
to				a
300 psig				p

c

200psig to

300 psig

3511

Legend (see opposite page)

Table 3 - Fuel unit gearset capacities

Fuel unit	Gearset capacity
model number	(gallons per hour)
H5PAN-C100H	79

8 Form 6104 BCF-35-R0699