Table 5: Two-Stage, Two-Pipe
Maximum Line Length (H + R)
Lift “H”
(Figure
19)
1725 RPM 3450 RPM
3/8” OD
Tubing
1/2” OD
Tubing
3/8” OD
Tubing
1/2” OD
Tubing
3GPH 3GPH 3GPH 3GPH 3GPH7GPH3GPH7GPH
0' 100' 91' 100' 100' 93' 80' 100' 100'
2' 100' 83' 100' 100' 85' 73' 100' 100'
4' 89' 75' 100' 100' 77' 66' 100' 100'
6' 80' 67' 100' 100' 69' 59' 100' 100'
8' 70' 59' 100' 100' 60' 52' 100' 100'
10' 61' 51' 100' 100' 52' 45' 100' 100'
12' 51' 43' 100' 100' 44' 38' 100' 100'
14' 41' 35' 100' 100' 36' 31' 100' 100'
16' 32' 27' 100' 100' 27' 24' 100' 100'
18' 22' -- 88' 74' -- -- 76' 65'
PUMP USAGE IDENTIFICATION
Figure 20: Pump Identification Example
Table 6: Max Nozzle Capacity for
Various Pump Models
MODEL
MAX. NOZZLE CAPACITY
(GPH) AT 100 PSI
RPM
A2V-2000 3 3450
A1V-7100 3 1725
A2V-7100 3 3450
A2V-7400 3 3450
A1Y-7900 7 1725
A2Y-7900 7 3450
B1V-8200 3 1725
B2V-8200 3 3450
B1Y-8900 7 1725
B1Y-8900 7 3450
Table 7: Strainer and Nozzle Rotation
STRAINER
TYPE
U.L. STRAINER
RATING (GPH)*
DESIGNATOR
ROTATION/NOZZLE
LOCATION
#2 FUEL OIL A RH/RH
V 3 B RH/LH
Y 7 C LH/LH
T 23 D LH/RH
G 34
* Maximum firing rate not to exceed maximum nozzle
capacity or strainer rating, whichever is LESS. A greater
firing rate requires a suitable external strainer.
All installations should be made
with local and national codes.
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
hollow nor solid. These nozzles frequently can be used in
place of either solid or hollow cone nozzles between 0.40
GPH and 8.00 GPH, regardless of the burner’s air pattern.
The lower flow rates tend to be hollow. Higher flow rates
tend to be more solid. Type W nozzles can be used in
place of A or B types to reduce specific problems.
The nozzle size is defined by the gallons of oil used per
hour at a pump pressure of 100 psi. Table 8 shows the
effects of pressure on nozzle flow rates.
12
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