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Installation
Guidelines (Continued)
Do not glue the
blower to the
supply line. Glue fumes can potentially
cause an explosion when the blower
starts. Install a 1/4” self-tapping screw
to secure the joint if necessary.
Do not install
blower below
water level. Blower must be at least
one foot above the maximum water
level.
4. Mount blower in a vertical position
using vertical rigid PVC pipe as
shown in Figure 1. For additional
support use supplied bracket as
shown in Figure 1. For warm
climates, try to locate the blower in
a shaded location.
If the blower is to
be installed more
than 25 ft from the spa, it will be
necessary to install a loop that is 1
foot above the water line and as close
to the spa as possible (See Figure 1).
A loop and a check
valve must be
installed at least one foot above the
water level when supercharging water
jets.
5. Verify plumbing is free of leaks
before adding water to spa.
6. Do NOT install adjustable jets.
Adjustable jets can cause excessive
back pressure within the unit.
7. Hydrotherapy jets naturally aerate
when installed correctly. Do not use
blower to supplement aeration
when jets have been installed
incorrectly.
Wiring Guidelines
Failure to observe
wiring instructions,
could result in death or serious injury.
All wiring
and electrical
connections must be performed by a
qualified electrician. Installations must
be in accordance with local and
national codes.
1. For electrical ratings, see product
decal.
2. Check the line voltage to make
certain it is correct for the blower
being used. Do not attempt to
connect 240 VAC to a 120-volt
blower; it will damage the blower
and void the warranty.
2
3. Refer to the National Electric Code
Guidelines for wire size and to
prevent electric shock.
4. Refer to the National Electric Code
Guidelines for proper selection of
wiring conduit and strain relief.
5. The blower field-wiring box is
designed for non-metallic electrical
tubing only. Refer to the National
Electric Code Guidelines for proper
selection of wiring, and strain
relief.
6. Be certain to connect the green
ground wire supplied with the
blower to the ground from
your electrical panel.
7. Connect remaining line wires
individually to the remaining wires
in the blower.
8. When wiring is complete carefully
install gasket and conduit cover
plate.
Overheating, short-
circuiting and fire
damage will result from inadequate
wiring.
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Figure 1
877.278.2797
Operating Instructions and Parts Manual
Grade
Wall or post
Bracket
Rigid PVC pipe
Check valve
(location when
NOT using a
Hartford Loop)
Air flow
5 Foot minimum from water
(use non-metallic plumbing)
Orient blower
housing as shown
Conduit box and cover
Non-metallic
electrical tubing
24 inches above
surrounding
grade / 12 inch
minimum above
water
Mount using rigid PVC pipe. For additional support, use supplied bracket as shown.
Hartford Loop required if Blower is more
than 25 feet away from pool / spa
12 inch minimum
Alternate location for check valve if
Harford Loop is used
3
Blower Sizing
The number of holes in the seats and
floor of the spa can be used to
determine the size of the air blower
that will be required for your
application. See Chart 1 for
recommended blower size based on
the number and size of holes.
Water Jet
Applications
The blower can be used to boost the
output of hydrotherapy jets. A venturi
fitting is normally incorporated into
the jet design. The purpose of the
fitting is to allow air to mix with the
water in the jet. The venturi fittings
can be connected together and then
pressurized with air from the blower to
greatly increase the jet action.
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New Spa
Applications
It is important to select a water pump
that will supply sufficient flow to the
jets. Consult with the jet manufacturer
for assistance in selecting a pump or
pumps that will accommodate the
number of jets desired in the spa.
Improper sizing can cause overheating
of the pump and blower.
Choose the correct size blower based
on the number of water jets in your
spa (see Chart 1). See the chart below.
Refer to the installation guidelines for
additional details.
Winterizing
The blower is designed for outdoor
use. There are no special off-season
requirements for the blower. In some
spa systems it is possible to protect
discharge lines from freezing by
operating the blower for several
minutes with the spa drained. The
airflow can be used to purge water
from the air lines.
877.278.2797
Chart 1
Notes
PRO1002403, PRO1502403, PRO2002403,
PRO100120, PRO150120, and PRO200120
Recommended Number of Holes
at the Following Hole Diameters
1/8 Inch 3/16 Inch 1/4 Inch
76 35 20
100 46 26
150 68 38
Total Hole Area
Square Inches
1.0
1.4
1.8
Blower
Model
PRO100120, PRO1002403
PRO150120, PRO1502403
PRO200120, PRO2002403
Number of
Water Jets
4 to 9
9 to 13
14 or more