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Table 5: Two-Stage, Two-Pipe
Maximum Line Length (H + R)
1725 RPM
Lift "H"
3/8" OD
(Figure
Tubing
19)
3GPH 3GPH 3GPH 3GPH 3GPH 7GPH 3GPH 7GPH
0'
100'
91'
100'
2'
100'
83'
100'
4'
89'
75'
100'
6'
80'
67'
100'
8'
70'
59'
100'
10'
61'
51'
100'
12'
51'
43'
100'
14'
41'
35'
100'
16'
32'
27'
100'
18'
22'
--
88'
PUMP USAGE IDENTIFICATION
Figure 20: Pump Identification Example
Table 6: Max Nozzle Capacity for
Various Pump Models
MAX. NOZZLE CAPACITY
MODEL
(GPH) AT 100 PSI
A2V-2000
A1V-7100
A2V-7100
A2V-7400
A1Y-7900
A2Y-7900
B1V-8200
B2V-8200
B1Y-8900
B1Y-8900
3450 RPM
1/2" OD
3/8" OD
Tubing
Tubing
100'
93'
80'
100'
85'
73'
100'
77'
66'
100'
69'
59'
100'
60'
52'
100'
52'
45'
100'
44'
38'
100'
36'
31'
100'
27'
24'
74'
--
--
3
3
3
3
7
7
3
3
7
7
Table 7: Strainer and Nozzle Rotation
STRAINER
TYPE
1/2" OD
Tubing
V
Y
100' 100'
T
100' 100'
100' 100'
G
100' 100'
* Maximum firing rate not to exceed maximum nozzle
100' 100'
capacity or strainer rating, whichever is LESS. A greater
100' 100'
firing rate requires a suitable external strainer.
100' 100'
100' 100'
100' 100'
76'
65'
NOZZLE SELECTION
Use the nozzle with the proper size, type and spray angle
that the heater manufacturer recommends.
There are 3 different nozzle types: Hollow Cone (Type A),
Solid Cone (Type B), or Partially Solid (Type W).
Hollow cone nozzles are generally used in burners with a
hollow air pattern and also for use in burners firing at less
than 1.00 GPH. Hollow cone nozzles generally have more
stable spray angles and patterns under adverse conditions
than solid cone nozzles of the same flow rate.
Solid cone nozzles produce a spray that distributes droplets
uniformly throughout the complete pattern. These nozzles
are generally used in larger burners firing above 2.00 or
3.00 GPH to provide smoother ignition. They can also be
used where the air pattern of the burner is heavy in the
center or where long fires are required.
Type W nozzles produce a spray that is neither completely
RPM
hollow nor solid. These nozzles frequently can be used in
place of either solid or hollow cone nozzles between 0.40
3450
GPH and 8.00 GPH, regardless of the burner's air pattern.
1725
The lower flow rates tend to be hollow. Higher flow rates
tend to be more solid. Type W nozzles can be used in
3450
place of A or B types to reduce specific problems.
3450
The nozzle size is defined by the gallons of oil used per
1725
hour at a pump pressure of 100 psi. Table 8 shows the
effects of pressure on nozzle flow rates.
3450
1725
3450
1725
3450
12
U.L. STRAINER
DESIGNATOR
RATING (GPH)*
#2 FUEL OIL
A
3
B
7
C
23
D
34
All installations should be made
with local and national codes.
ROTATION/NOZZLE
LOCATION
RH/RH
RH/LH
LH/LH
LH/RH
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