Balboa Water Group LM8 User Manual

LM8 - Low Maintenance System User Manual

1

Important Notices

INTELLECTUAL PROPERTY ADVISEMENT

All Intellectual property, as defined below, owned by or
which is otherwise the property of Balboa Water Group or
its respective suppliers relating to the Balboa Water Group
LM8 Low Maintenance System, including but not limited
to, accessories, parts, or software relating there to (the
“LM8 - Low Maintenance System”), is proprietary to Balboa
Water Group and protected under federal laws, state laws,
and international treaty provisions. Intellectual Property
includes, but is not limited to, inventions (patentable or
unpatentable), patents, trade secrets, copyrights, software,
computer programs, and related documentation, and other
works of authorship. You may not infringe or otherwise violate
the rights secured by the Intellectual Property. Moreover,
you agree that you will not (and will not attempt to) modify,
prepare derivative works of, reverse engineer, decompile,
disassemble, or otherwise attempt to create source code
from the software. No title to or ownership in the Intellectual
Property is transferred to you. All applicable rights of the
Intellectual Property shall remain with Balboa Water Group
and its suppliers.

END USER WARNING

This Installation Manual is provided solely to aid qualified spa
service technicians in installing spas with control systems
manufactured by Balboa Water Group. Balboa controls have
absolutely no end user serviceable parts. Balboa Water Group
does not authorize attempts by the spa owner/user to repair or
service any Balboa products. Non-qualified users should never
open or remove covers, as this will expose dangerous voltage
points and other dangerous risks. Please contact your dealer or
authorized repair center for service.

WARNINGS: DANGER! RISK OF ELECTRIC SHOCK!

All electrical work must be performed by a qualified UÊ
electrician and must conform to all national, state, and
local codes.
Before making any electrical connections, make certain UÊ
that the Main Power breaker from the house breaker box
has been turned off.
Do not attempt service of this control system. Contact UÊ
your dealer or service organization for assistance.
Do not permit any electric appliance, such as a light, UÊ
telephone, radio, or television within 5’ (1.5m) of a pool
or spa.
Follow all owner’s manual UÊ power connection
instructions.
Installation must be performed by a licensed electrician UÊ
and all grounding connections must be properly
installed.
No user serviceable parts.UÊ
Water temperature in excess of 38˚C may be injurious to UÊ
your health.
Disconnect the electrical power before servicing.UÊ
Keep access door closed.UÊ

CAUTION

UÊ Test the ground fault circuit interrupter before each use

of the spa.
Read the instruction manual.UÊ

UÊ Adequate drainage must be provided if the equipment is to

be installed in a pit.
To ensure continued protection against shock hazard, UÊ
use only identical replacement parts when servicing.

GFCI COMPLIANCE

It is required by code to install a Ground Fault Circuit UÊ
Interrupter (GFCI) in the supply power for a spa. This
device will trip the breaker if there is an unsafe electrical
condition caused by a malfunctioning component or even
the slightest short to ground.
Note: Connect the control system only to a circuit UÊ
protected by a Class A GFCI mounted at least 5’ (1.52M)
from the inside walls of the spa/hot tub and in line of sight
from the equipment compartment.
Refer to UÊ NEC (National Electrical Code), 2005 Edition,
Article 680 for more information.

2

WARNING

Water temperature in excess of 38˚C may be injurious to UÊ
your health.
Disconnect the electrical power before servicing.UÊ
Keep the pack enclosure closed unless being serviced by UÊ
a qualified serviced technician.

©2012 Balboa Water Group. All rights reserved.

Table of Contents

Important Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Intellectual Property Advisement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

End User Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

GFCI compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings: Danger! Risk of Electric Shock! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction to the LM8 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Automatic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Home Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Timing Status Bar Located Below Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operation Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pump and Blower Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Icon Colors and Speed Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Setting the Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Maintenance Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Temperature Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Locking the Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Temperature Units Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Screensaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Inverting the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Filtration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Vacation Mode & Economy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Accessories and Optional Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

LM8 Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Note on Changing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3

Introduction to the LM8 System

Thank you for choosing Balboa Water Group’s LM8 - Low
Maintenance System. The LM8 system incorporates the following
features and benefits.

ADVANCED TECHNOLOGY

All equipment and features are controlled from topside panelUÊ
Heater management system eliminates flow and pressure UÊ
switches
All logic and control functions for the entire spa are contained UÊ
in a single module
Artificial intelligence saves energy UÊ
touch panelUÊ

UÊ Self-testing diagnostics

Self-monitoringUÊ
Informative end user messagesUÊ

Optional modules available for: UÊ
a) Audio FM tuner in a single chip and 100W of music power
without excessive heat, and
b) LED module with various dimming LED programs -
including LEDs with music; modules available for Sloan
lighting systems.
c) The lighting system can accommodate 12VDC or 12VAC.

USER FRIENDLY

The touch screen is the only required customer interface UÊ

Sensors that provide real time status of current draw, timers UÊ
for the Blower, Jets, Lights, Flow rate, and GPM
Automatic control of over heating, cold plumbing, and UÊ stale
water in pumps
Special features iUÊ

12/24 hr time, degrees in F or C, and Lock Spa (child lockout).
A quick Setup screen and Status screenUÊ

nclude Economy and Auto Heat Modes,

RELIABLE DESIGN

UÊ Redundant connections (topside, sensors, transformer, LEDs)

Redundant, gold plated, card edge connectorsUÊ
Higher rated part spec’s (relays, capacitors, resistors, UÊ
transformer)
Extended factory testing of all control functions and special UÊ
features

UÊ UL, CSA, CE

SIMPLE, INEXPENSIVE REPLACEMENTS

Major control functions separated into modules, which can UÊ
be replaced without opening pack
Module replacement costs less than replacing fully populated UÊ
main boards.

THEORY OF OPERATION

Artificial Intelligence is used to turn the heater on just when UÊ
the water temperature drops 1 degree F (not 48 times per
day). The off time is constantly adjusted, based on nearness
to target. Benefits are energy savings and less wearing

of the pump.

Since there is no sensor in the water, the water temperature UÊ
is reported only after the pump is run for at least 30 seconds
and the rate of temperature change is zero.
A UÊ flow test is run before each heater usage. With the
pump off, the heater is tested for 6 seconds. Then the rate
of cooling is measured when the pump is turned back on.
Gallons/minute can be calculated.
To protect against loss of flow, the heater is turned off UÊ
anytime the temperature in the heater increases by a rate of
more than 2 degrees/minute. This takes only seconds, and is
therefore safer than other systems.
An overheat condition does not display an error message. UÊ
Instead, the heater will be locked off (until power is reset)
and the high temperature that was reached will be displayed
on the Status Screen for technician review.

CONTROL SYSTEM OVERVIEW

Fully Integrated and Self Contained UÊ
Modular Functions UÊ
Built-in Self Test UÊ
Advanced Heater Management System UÊ
High Reliability/Low Maintenance Design UÊ
Touch Screen Top Side UÊ
Five Issued/Pending Patents in the designUÊ

BUILT-IN TECH SUPPORT

Continuous self testing (motors, heater, sensors, modules)UÊ
Green/yellow/red status on topside shows replacement UÊ
needs for any spa component
Immediate identification of miswiring or failed componentsUÊ

4

Overview

AUTOMATIC FUNCTIONS

The most important function of the spa control is to 1.
safely manage the heater. Normally the heater is turned
on whenever the filter pump is running and the water
temperature is 1 degree less than the set temperature.
Once on, the heater will stay on until the water
temperature is 1 degree more than the set temperature.
The heater will be forced to stay off if there is not an 2.
adequate flow of water through the heater. This is
determined by performing a flow test prior to each heater
activation. If the flow of water is too low to cool the
heater 2 degrees in less than a minute, following a 6
second heater test, the heater will not be allowed on and
the statues screen will appear showing a flow rate less
than 6 gal./min.
The 3. heater will also be forced off if too many motors are
running for the size of the circuit breaker.
Anytime the water in the spa is 112F or more, all 4. pumps
are shut down. The pumps can be used again only when
the water temperature has dropped to 104F.
If the water passing through the heater is 118F, or more, 5.
the temperature display is locked on the display and the
heater and all pumps are held off until a manual reset
(circuit breaker) is accomplished. The blower will be turned
on to assist in cooling of the water.
Anytime the heater element (while off) falls to a 6.
temperature of 48F, it is presumed that the spa’s plumbing
may be in danger of freezing. All pumps and the blower
are turned on for 1 minute. If the heater element sensor is
still 48F or less after 1 minute, the blower and pumps are
turned off and the heater is turned on to raise the water
to 60F. If for some reason (flow) the heater can’t be turned
on, the pumps will continue to run until the temperature of
the water reaches 49F.
Once a day, at 10 am, any pump or blower that hasn’t been 7.
running in the last 24 hours is turned on for 15 seconds to
purge stale water.
All components are automatically 8. timed out, as follows:

Pumps – 30 minutes
Blower – 30 minutes
LEDs – 4 hours
Audio – 1.5 Hours

HOME SCREEN

The main screen will be referred to the “home” screen. The
on screen GUI shows icons. Shown counter clockwise are the
following icons, starting with the No. 1 pump: Pump 1, Pump 2,
Blower (optional Pump 3), Temperature, Setup, Audio, Lighting,
Inverse Screen.

Use the “pump 1”, “pump 2”, or “blower” buttons to UÊ
activate the desired component.
a) If the button is blue, it means the component is off.
b) If the button is green, it means that it is activated.
c) If the button turns red, that means there is some sort
of a problem associated with that component (low
current, blown fuse, disconnected, etc.)
d) If the area is blank, that equipment has not been
installed
Below the icons is a white status bar that appears, and UÊ
shows the amount of time used and that is left.
Center screen shows temperature in degrees Fahrenheit UÊ
(or Centigrade), and time. All conditions can be changed.
From any screen that allows for adjustments, a “Back” UÊ
button will take you to the previous screen.
At the bottom of the screen, a status is given of what is UÊ
occurring. For example “Circulating” may show.

Timing Status Bar Located Below Icons

Pump 1 timing is nearing end of time cycle.UÊ
Pump 2 is not activated.UÊ
Blower cycle has just turned on. UÊ
Light cycle has approx. 90% time left. UÊ
Audio cycle has approx. 80% time left.UÊ

5