Balboa Water Group Spa Therapy Sequencer 52200-98 - Manual (Page 2)

2 Balboa Water Group Therapy Sequencer 2
Suggestions For Installing The
Balboa Therapy Sequencer
05-28-14
Introduction
The Balboa Therapy Sequencer consists of a controller that opens and closes valves that supply water to four groups
of jets. When these jets are strategically located in a spa, they provide a sequencing massage therapy that enhances the
spa experience and provides added value to a spa. The top side control panel for the system allows the user to start or
stop the sequence, choose from 9 sequencing programs, select 1 of 3 sequencing speeds, and pause at any point in the
current program.
The valves in the system are intended to be hydraulically powered by a dedicated 2 hp or larger pump. This pump
should not be used for other operational functions such as heating or filtering. The maximum number of .312 diameter
orifice jets (full size jets) that should be connected to each 1” sequencing valve is five. If .250 diameter orifice jets are
being used, (euro jets) up to eight jets per sequencing valve may be connected. See Figure 1 for a
basic overview of the Balboa Therapy Sequencer control system.
The Balboa Therapy Sequencer is designed to receive electrical power from a Balboa Spa Controller that is configured to
energize a dedicated output for the Therapy Sequencer when the appropriate pump(s) have been energized.
Suggestion 1. Select the proper jets.
Use a jet that has an individual air connection that accepts 3/8” I.D. tubing. The air inlet for the jet should use check
valves to prevent water from backing into the air plumbing. Some jet manufacturers provide jets that are available with
this feature built into the jet and some provide individual inline check valves that are installed at the air inlet port when
the air tubing is installed. Regardless of which jet is selected, the check valve will prevent water from entering the air
system and will enable the jet to aspirate immediately when water is supplied to the jet from the sequencing valves. Jets
that do not aspirate quickly will not produce effective hydrotherapy as they are being sequenced on and off, especially
during the shorter “on” times of the faster sequences. The “on” time will be used up waiting for the jet to aspirate.
In addition to using check valves in the air lines to the jets, be sure to route the air lines vertically from the jet to a
manifold that is located above the maximum normal water line of the spa. Gravity will aid the removal of any water
that may have accumulated in the air line as vacuum is created within the venturii of the jet. Also make sure that the
plumbing in the air system does not starve the air requirement of the jets when they are all aspirating at the same time.