A.O. Smith COF-199 manual Fuel Pump, Burner, OIL Pump & Nozzle Specifications, Psig

BURNER

The burner assembly is mounted on the flange of the combustion chamber, fig. 14.

NOTE: Be certain combustion chamber opening is aligned with opening in heater flange, fig. 14, before placing burner into heater .

1.Place the flange gasket over the 3/8" x 1/4" long studs on the flange.

2.Place the burner flange on the studs and into the heater flange opening.

•Bring the factory wiring from the high limit /eco and thermostat into the oil burner junction box.

•Install field and factory wiring as shown in the wiring diagrams, figs. 15. A schematic diagram is also shown for convenience when servicing.

•Ground the heater in accordance with the NEC code to guard against electrical shock from the heater or water system.

3.All burners have "intermittent ignition" as defined by UL (ignition is on during the time the burner is on and off when the burner is off).

4.Do not "test fire" the heater to complete the oil burner certificate until the tank is filled with water, see the oil burner manual.

The certificate and this manual must be left with the user for future reference.

TABLE 8 - OIL PUMP & NOZZLE SPECIFICATIONS

	Fitting Rate (GPH)		Oil Burner		Oil Burner
		Non	Pump	Oil Burner	Nozzle
Heater	State	State	Non-Setting	Nozzle	Rating
Model	Burner	Burner	PSIG	Type	(GPH)
COF-199	1.42	1.1	110	80ºB	1.35
COF-245	1.75	1.5	100	80ºB	1.75
COF-315/315A	2.25	2.0	100	80ºB	2.25
COF-385/385A	2.75	2.5	100	80ºB	2.75
COF-455/455A	3.25	3.0	100	80ºB	3.25
COF-700/700A	5.00	4.5	100	80ºB	5.00

ASSEMBLY OF THE OIL BURNER TO THE HEATER

FIGURE 14

3.Place the flat washers and lock washers over the studs and fasten the burner in place with the 3/8" - 16 nuts as shown.

Connect the oil line(s) and electrical wires to the burner as follows:

1.The oil pump manufacturer's instructions should be checked for connection and bleeding information.

•The burner is approved for use with fuel oil not heavier than No. 2.

2.An approved, separately fused circuit with disconnect switch should be available for the oil burner. Using Figure 15, the wiring diagram below as a guide:

•Route the 120 volt incoming line in the dual bulb thermostat, mounted on the side of the heater.

FUEL PUMP

GENERAL

All heaters are shipped with the pump pressure set at 100 psig except the COF-199 which is set at 110 psig.

All oil pumps are fitted for installation on single fuel line systems. The pump may be adapted for two line service by using the by-pass Plug and pump manufacturer's instructions packed with the burner.

The single-stage pumps are for single-pipe or two-pipe installations, either lift or gravity feed. On gravity feed installations the inlet pressure is not to exceed 3 psig. On one pipe lift installations the lift is not to exceed 8 ft.

The two-stage pumps are for two-pipe lift installations where the inlet vacuum does not exceed 20" hg. vacuum.

AIR BLEED PROCEDURE (Refer to oil burner manual).

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