1. SELECT BLOWER
Correctly sizing the blower for your application is a critical step to the sustained operational quality
of your Jandy Pro Series Pool and Spa Blower. Damage or failure due to an improperly sized
blower is not covered under warranty.
SIZING WORKSHEETS:
The worksheets below will guide you through the proper sizing
calculations for your application.
Calculate Back Pressure
a
Vertical Measure from Pool/Spa surface to air outlet
a
1
Vertical Measure from air outlet to lowest check valve
(See Note)
b
10
Number of feet of 2" Pipe
c
.5
Number of 90° Elbows
d
.125
Number of 45° Elbows
e
4
Number of 1/2 lb check valves
Blower
e
d
b
c
Deck
a
Spa
a
1
Calculate Airflow
Choose an air hole size from
AIR HOLE
CONVERSION
the chart at left and apply the
SIZE
FACTOR
conversion factor in the formula
1 "
2.4
below to determine total airfl ow in
8
standard cubic feet per minute.
5 "
1.5
32
3 "
1.1
16
No. of Holes
1 "
0.6
4
Conversion
3 "
0.27
Factor
8
Total Airflow
0.15
1.2 "
SCFM
Jet
0.1
(Standard Cubic Feet Per Minute)
Determine Blower Needed
130
Locate the total back pressure, calculated above
120
and draw a horizontal line. Locate the total airfl ow
110
from previous step and draw a vertical line. These
100
lines will intersect on the performance curve of the
90
minimum HP blower required for your application.
80
Performance Curves (60 HZ)
70
Models: PSB110
60
Models: PSB210
50
Models: PSB115
Models: PSB215
40
Models: PSB120
30
Models: PSB220
20
Blower Selection
10
Voltage
1.0 HP
0
120V
PSB110
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
240V
PSB210
Air Flow Rate (SCFM)
2. PLUMBING
e r
B lo w
h
n w it
ll a ti o
(i n s ta
)
†
e ts
tu ri J
V e n
e r
h
B lo w
n w it
ll a ti o
(i n s ta
)
J e ts
b le r
B u b
Calculate back
e *
k V a lv
pressure as a measure
C h e c
of "inches of water".
Verifi cation of this
S p a
fi gure can be made by
using a manometer.
Total Back Pressure
(Inches of Water)
Grade
e r
NOTE:
Include a
1
for
B lo w
n w it
h
ll a ti o
installations with a check
)
(i n s ta
†
o r d lo
e ts
tu ri J
H a r tf
valve below the air outlet
V e n
P lu m
only. See "Below Grade
e r
c lo s e
B lo w
n w it
h
s p a w
Installation" on facing page
ll a ti o
p o o l/
s s ib le
(i n s ta
)
J e ts
a s p o
for details. For above grade
b le r
B u b
installations enter 0 for a
.
1
WARNING
Installing an insuffi ciently
sized blower will
increase back pressure.
R e tu
Failure to accurately
S p a
follow the blower
sizing calculations
provided could result
in excessive back
u m p
T o P
pressure. Excessive
pressure can cause
damage that could result
in electrocution causing
severe injury or death.
Hartford Loop -
To install the
blower below
water level, or if
the blower air
line drops
in .
2 " m
below the
bottom of the
spa, use the
Hartford Loop
plumbing
Max Back Pressure 40"
configuration to
prevent the air
line from filling
Max Back Pressure 50"
with water.
Max Back Pressure 65"
1.5 HP
2.0 HP
PSB115
PSB120
e r
PSB215
PSB220
B lo w
STANDARD INSTALLATION
2 5 '
V e n tu
5 ' -
ri J e
m a x
.
t
†
m in .
v e l
te r le
to w a
in .
1 2 " m
rn
R e tu
J e t
b le r
B u b
u m p
T o P
p
S u m
* Install a 1/2 lb. U.L. listed check valve between the
blower and the jets to prevent water damage to the blower.
Ensure that check valves are accessible for servicing.
†
Do not install adjustable jets. These may cause
excessive back pressure.
LONG RUN INSTALLATION
e t
(over 25' from spa wall)
2 5 F e
O v e r
o p
V e n tu
b a s
e *
ri J e
k V a lv
e
t
†
to th
C h e c
a ll
v e l
.
te r le
to w a
in .
1 2 " m
rn
J e t
b le r
B u b
p
S u m
* Install a 1/2 lb. U.L. listed check valve between the blower
and the jets to prevent water damage to the blower.
Ensure that check valves are accessible for servicing.
Do not install adjustable jets. These may cause excessive
†
back pressure.
BELOW GRADE INSTALLATION
W a te
r J e t
S p a
rn
C h e c
k
R e tu
J e t
b le r
*
V a lv e
B u b
T o
p
S u m
p
P u m
* Install a 1/2 lb. U.L. listed check valve between the
blower and the jets to prevent water damage to the blower.
Ensure that check valves are accessible for servicing.
3. WIRING
Installation of this equipment should be performed by a
Installation of this equipment should be performed by a
licensed electrician and conform to all National Electrical Code
licensed electrician and conform to all National Electrical Code
®
®
(NEC
), state and local codes.
®
1. Ensure all power to the blower has been
Ensure all power to the blower has been
disconnected at the main breaker.
Blower
2. Remove blower front door by removing
Remove blower front door by removing
the two (2) screws sliding the door
Blower Door
downward and pulling the door free.
downward and pulling the door free.
3. Pull in voltage source and ground
Pull in voltage source and ground
wire from Power Center.
4. Connect wires from power center to
Connect wires from power center to
the corresponding wires from the blower
the corresponding wires from the blower
motor. Use the wiring diagrams below for
motor. Use the wiring diagrams below for
reference. The 120 or 240 toggle switch
reference. The 120 or 240 toggle switch
Wires
Screw
will come preinstalled with fl ag terminals.
will come preinstalled with fl ag terminals.
Conduit
Connections will need to be made with
Connections will need to be made with
Wire nuts.
RISK OF ELECTRIC SHOCK WHICH CAN RESULT IN SERIOUS
120V Wiring
INJURY OR DEATH. Before attempting installation, ensure that all
power to the device is disconnected/turned off at the circuit breaker.
Be careful not to damage or abrade any wiring or other components.
Power Center
Line 1
Neutral Bus Bar
ON
Ground Bus Bar
OFF
120V Toggle Switch
Flex Conduit
LEGEND
Line 1
Neutral
From Power Center
Ground
RISK OF ELECTRIC SHOCK WHICH CAN RESULT IN SERIOUS
240V Wiring
INJURY OR DEATH. Before attempting installation, ensure that all
power to the device is disconnected/turned off at the circuit breaker.
Be careful not to damage or abrade any wiring or other components.
Line 1
Line 2
Power Center
ON
ON
Ground Bus Bar
OFF
OFF
240V Toggle Switch
Flex Conduit
LEGEND
Line 1
Line 2
Ground
From Power Center
From
Power Center
From Blower Motor
From Blower Motor