4
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 WET HANDS 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 OF THIS WATER HEATER REQUIRES ABILITY
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.
