A.O. Smith COF-199 manual Safety, Installation

OIL BURNER SPECIFICATIONS

The oil burner nameplate decal includes a series code which identifies the major features of the oil burner. The series number is the last three digits of the burner code number.

Table 3 below describes the oil burner characteristics for each series number. The burners are to be used with fuel oil not heavier than No. 2.

TABLE 3 SOME NOTABLE OIL BURNER FEATURES

A.O. Smith	R.W.			Suntec	Nozzle Type
Burner	Becket	Safety	Oil Pump	Oil
or Heater	Burner	Timing	Type	Pump
Series	Model	+	Mode		Spray	Spray
Number*	Number				Pattern	Angle
				A2VA
	AFG			7118	Type B
940		15 Sec.	Single	-	Solid	80°
	SF		Stage	A2YA-	Cone
				7916
				B2VA
				8216	Type B
941	AFG	15 Sec.	Two-	-	Solid	80°
	SF	15 Sec.	Stage	BY2A	Cone
				8916

*To provide the proper firing rate for each model heater, see SPECIFICATIONS: there are burner models for each heater model in table 2. The Burner and heater model numbers must match and the heater (or the burner) series number should indicate the features specified for the installation.

+All oil burners are UL defined as having "interrupted ignition" . . . meaning the ignition is on during the flame establishing period only. Ignition is off when the burner is off. Standard safety timing is 15 seconds.

The heater series number determines the type of oil pump supplied with the oil burner. For installations where gravity feed of fuel oil from the storage tank to the heater is practical, an oil burner with a single- stage oil pump can be used. The 940 series of burners have single- stage pumps which are shipped for installation of a supply line to the tank only. A return line back to the storage tank can be installed, if required, by making a small modification to the pump, see the oil burner installation manual.

For installations where gravity feed cannot be employed, (the storage tank is located significantly below, or remote from, the heater) an oil burner with a two-stage oil pump should be used. The 941 series of burners have two-stage pumps which are shipped for installation of a supply and return line to the tank. However, in situations where the return line is not required (low lift installations), the pump may be modified to operate without the line, see the oil burner installation manual.

IMPORTANT

The oil-fired water heater shipment consists of two packages, heater and oil burner. Check to be certain the model number on the heater and oil burner packages match. To assure matching equipment, see preceding information.

		COF	COF	COF	COF	COF	COF
Model Heater		199	245	315/315A	385/385A	455/455A	700/700/A
Min.	A.O. Smith
Firing	Burner	1.42	1.75	2.25	2.75	3.25	5.0
Rate
In	Non
GPH	A.O. Smith	1.1	1.5	2.0	2.5	3.0	4.5
	Burner

SAFETY

DANGER

BE SURE TO TURN OFF POWER WHEN WORKING ON OR NEAR THE ELECTRICAL SYSTEM OF THE HEATER. NEVER TOUCH ELECTRICAL COMPONENTS WITH WETHANDS OF WHEN STANDING IN WATER. WHEN REPLACING FUSES ALWAYS USE THE CORRECT SIZE FOR CIRCUIT.

If it is necessary to reset the safety control, depress red button one time only. If burner does not operate after depressing red button one time, call serviceman.

INSTALLATION

REQUIRED ABILITY

INSTALLATION OF SERVICE OFTHIS WATER HEATER REQUIRESABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING , OIL BURNER AND ELECTRICAL WORK REQUIRED.

GENERAL

The installer should be guided by these instructions, local codes and the following publications.

•Standard for the Installation of Oil Burning Equipment, NFPA Standard No. 31, Available from National Fire Protection Association, Batterymarch Park, MA 02269.

•Code for the Installation of Heat Producing Appliances, Available from American Insurance Association, 85 John Street, New York, NY 10038.

•The National Electrical Code, NFPA No. 70. Availability same as NFPA Standard No. 31.

•In Canada - CAN/CSA-B139 Installation Code for Oil Burning Equipment.

When other than an A.O. Smith burner is used, this instruction manual can be used as a general guide. The burner manufacturer's instructions will have to be consulted on specific questions of wiring, air adjustment, etc.

Do not test the burner or control system before the heater is filled with water. Follow the START-UP procedure in this manual.

UNCRATING

Uncrate the heater by removing the outside mat and top locator. The shipping pallet must be removed from the unit. It may be possible to simply unbolt the base from the pallet and, with the help of two or more persons, work the unit off the pallet. Some units will be too heavy and will require the use of jacks or lifting equipment. Safely remove the pallet and move the unit into position. Be Careful When Moving This Heater. It will tip over easily.

LEVELLING

Install the heater plumb to the ground. If it is necessary to adjust the heater, use metal shims under the channel type skid base.

LOCATION

The water heater should not be installed where the combustion air is contaminated, see COMBUSTION AND VENTILATING AIR. Temperature in the location must be above 32°F (0°C) and free of combustible dusts and flammable gases or vapors.

For the best installations, the water heater should be located:

1.On a level surface.

•Shim the channel type skid base as necessary If leveling is required.

2.Near a floor drain.

•The heater should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the heater or to lower floors of the structure.

•When such locations cannot be avoided, a suitable drain pan should be installed under the heater.

•The pan should be at least two inches deep, have a minimum length and width of at least two inches greater than the diameter of the heater and should be piped to an adequate drain. The pan must not restrict combustion air flow.

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