Manual

BOILER MODEL NO.
WITH WITHOUT
TANKLESS TANKLESS
COIL COIL
>>3EW.65T >>3EW.65Z
>>3EW.75T >>3EW.75Z
3EW 1.00T 3EW 1.00Z
>>4EW.90T >>4EW.90Z
4EW1.25T 4EW1.25Z
4EW1.50T 4EW1.50Z
>>5EW 1.20T >>5EW 1.20Z
5EW 1.75T 5EW 1.75Z
5EW2.00T 5EW2.00Z
*MBH = 1,000 BTU per hour BTU = British Thermal
NET DIMENSIONS - (inches)
NO. INPUT **HEATING I=B=R FIRING MINIMUM
SEC. *MBH CAPACITY RATING RATE A.F.U.E. CHIMNEY
*MBH *MBH +GPH ++ SIZE/HEIGHT A B C
3 91 80 70 0.65 86.3 8" X 8" X I5" I4-1/2 6 8
3 105 92 80 0.75 85.2 8" X 8" X I5" 14-I/2 6 8
3 140 II9 I03 1.00 83.4 8" X 8" X I5" 14-I/2 6 8
4 126 I11 97 0.90 86.0 8" X 8" X I5" 17-3/4 6 9-5/8
4 175 I50 130 1.25 83.9 8"X 8" X I5" 17-3/4 6 9-5/8
4 210 I78 155 1.50 82.4 8"X 8" X I5" 17-3/4 6 9-5/8
5 168 I47 I28 1.20 86.5 8" X 8" X 15" 2I 6 I1-1/2
5 245 209 I82 1.75 83.6 8" X 8" X 15" 2I 6 I1-1/2
5 280 236 205 2.00 82.0 8" X 8" X 20" 2I 6 11-1/2
Unit
**Heating Capacity based on I3% CO2 with a -0.02" w.c. draft over fire, and a #1 smoke or less. Testing was done in accordance with the
D.O.E. (Department of Energy) test procedure.
+GPH = Gallons per hour oil at I40,000 BTU per gallon
++A.F.U.E. = Annual Fuel Utilization Efficiency based upon D.O.E. test procedure.
>>As an Energy Star Partner, Dunkirk Radiator Corporation has determined that this product meets Energy Star Guidelines for Energy Efficiency.
The City of New York MEA #191-99-F
These low pressure oil fired hot water boilers are constructed and hydrostatically tested for
a maximum working pressure of 50 psig (pounds per square inch gage) in accordance with
AS.ME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code
Section IV Standards for heating boilers.
The Heating Capacity indicates the amount of heat available after subtracting the losses up
the stack. Most of this remaining heat is available to heat water. A small portion is heat from
the jacket and surfaces of the boiler and it is assumed that this heat stays in the structure.
The Net I=B=R Rating represents the portion of the remaining heat that can be applied to
heat the radiation or terminal units (i.e. finned tube baseboard, cast iron radiators, radiant
floor, etc.). The difference between the Heating Capacity and the Net I=B=R Rating, called
the piping and pickup allowance, establishes a reserve for heating the volume of water in the
system and offsetting heat losses from the system piping. The Net I=B=R Ratings shown
are based on a piping and pickup factor of 1.15 in accordance with the I=B=R Standard as
published by the Hydronics Institute. The Net I=B=R Rating of the boiler selected should be
greater than or equal to the calculated peak heating load (heat loss) for the building or
area(s) served by the boiler and associated hot water heating systems. The manufacturer
should be consulted before selecting a boiler for installations having unusual piping and
pickup requirements.
Boilers with the same number of sections are identical to each other except for their firing
rate. The firing rate is determined by the nozzle size in the oil burner and the oil pressure at
the nozzle. For example: Models 3E.65Z, 3E.75Z, and 3EI.00Z are the same boiler, without
a tankless coil, except for the firing rate of the oil burner. Models 4E.90T, 4E1.25-1-, and
4E1.50T are the same boiler, with a tankless coil, except for the firing rate of the oil burner.
Each boiler rating plate shows three possible model numbers for a given boiler configuration.
The actual model number is determined by the firing rate of the oil burner. Boilers that are
factory packaged include two nozzles for two firing rates. These boilers operate on #2
Heating Oil. This fire rate does not come with additional nozzles or heads for the
burner. The 3 & 4 section units are packaged with two nozzles. They can be field
converted to low fire rates by utilizing the low fire kit.