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BOILER
RATINGS
AND CAPACITIES
BOIIiR
MOI)EI.NO
Wlill
WIIIIOU
I
IANK[ISS
IANKIESS
('Oil
('OIl
niw
(_5I ¸
3[!W65Z
-
31,W 751
3EW 75Z
31!WI
OttI ¸
3EWI
IRIZ
4[iw
90T
4EW 99Z
41!WI
251
4EWI
25Z
41LWl 501
4EWl
50Z
5EWI
20'I
5EWI 20Z
5EWI.75
I
5EWI
75Z
5[-W2 00"[
SEW200Z
NO
INPUI
**llliA'[
ING
Sli('
+M[_II
( APA('IIY
*MBH
3
91
80
3
105
92
3
140
II9
4
126
II[
4
175
150
4
210
178
5
168
147
5
245
209
5
280
236
NET
DIMENSIONS
(inches)
I=B:R
HRING
A t: tJ I
MINIMUM
RA'I IN(i
RA'II_
_+
CHIMNEY
*MBH
+GPH
SIZE / HEIGHT
A
B
C
70
0.65
863
8" X 8" X 15'
14+1/2
6
8
80
075
852
8" X 8"X 15'
14-1/2
6
8
103
100
83 4
8" X 8" X 15'
14-1/2
6
8
97
090
860
8" X 8" X 15'
17-3/4
6
9-5/8
130
I +25
839
8" X 8" X 15'
17-314
6
9-5/8
155
150
82.4
8" X 8" X ] 5'
17-3/4
6
9-5/8
128
1+20
865
8" X 8" X 15'
21
6
1 I-I/2
182
1.75
836
8" X 8" X 15'
21
6
11-1/2
205
2 00
820
8" X 8" X 20'
21
6
[ I-I/2
*MBH
1,000 BTU per hour
BTU
British Thermal
Unit
+'*Heating
Capacity
based on 13% 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.
_GPB
Gallons
per hour oil at 140,000
BTU per gallon
+ _A F U E. = Annual
Fuel Utilization
Efficiency
based upon DOE
test procedure.
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 A.S.M.E.
(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
deternuned
by the nozzle
size in the oil burner
and the oil pressure
at the nozzle.
For example:
Models
3E.65Z,
3E.75Z,
and 3El .00Z are the same
boiler,
without
a tankless
coil, except
for the firing rate of the oil burner.
Models
4E.90T,
4El .25T, and 4El.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 nutnbcrs
for a given boiler configuration.
The actual model
tmnaber 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.
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