Master Spas H2X Challenger User manual

OWNER’S MANUAL
WATER TO THE EXTREME

H2X OWNER’S MANUAL
Welcome To Ultimate Relaxation!
Thank you for choosing your new swim spa built by Master Spas. Please read the entire Owner’s Manual
before installing and using your new swim spa. The goal of this manual is to provide you with safety
and operational information plus some tips that will help you enjoy your H2X swim spa to its fullest.
At the time of print, this manual is accurate in its information. Master Spas reserves the right to change
or improve its product without prior notice. To check on updates or for other information, please visit
www.masterspas.com and follow the links to the customer service section.
Record Of Ownership
Name_____________________________________________________________________________________
Address___________________________________________________________________________________
City _________________________________________________________ State ______ Zip ______________
Phone # (______)________-__________ Date Purchased ______ /______ /_______
Model _________________________________ Serial #____________________________________________
Dealer Name ______________________________________________________________________________
Service Tech Rep ___________________________________________________________________________
*Serial Number Location
The serial number for your swim spa is located in the filter area, on the spa system pack, or on the
listing plate on the skirting. It will start with “H” followed by a 5-digit number. Ex. H90501
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6927 Lincoln Parkway
Fort Wayne, Indiana 46804
800-860-7727
www.masterspas.com

TABLE OF CONTENTS
Important Safety Instructions ............................................................................................................. 3-10
Glossary of Swim Spa Terminology................................................................................................... 11-14
Electrical Installation Requirements.................................................................................................. 15-16
Wiring Schematic............................................................................................................................. 17
Site Preparation / General Guidelines.......................................................................................... 18-19
Installation Instructions .................................................................................................................... 20
Water Chemistry Terms .................................................................................................................... 21-22
Spa Water Maintenance ........................................................................................................................ 23
Water Quality Maintenance Start-Up ..................................................................................................... 24
The Advantages of Eco Pur™Mineral Purification ................................................................................... 25
Water Quality Maintenance Schedule..................................................................................................... 26
Swim Spa Water Maintenance Start-Up ............................................................................................ 27-29
Swim Spa Water Maintenance Trouble-Shooting Guide .......................................................................... 30
Why Chemicals are Important................................................................................................................ 31
Maintenance Recommendations ............................................................................................................ 32
Winterizing Your Swim Spa ................................................................................................................... 33
H2X Swim Spa
Specifications................................................................................................................................... 34
Electronic Controls...................................................................................................................... 35-36
Diagnostic Messages................................................................................................................... 37-38
Propulsion System............................................................................................................................ 39
Momentum System Overview
Main Menus .................................................................................................................................... 40
Fill It Up! ......................................................................................................................................... 42
Spa Behavior............................................................................................................................... 37-38
Temperature.................................................................................................................................... 43
Heating Information and Diverter Indicator...................................................................................... 44
Modes – Ready and Rest ................................................................................................................. 45
Show and Set Time of Day .............................................................................................................. 46
Flip (Invert Display)........................................................................................................................... 46
Restricting Operation....................................................................................................................... 47
Unlocking........................................................................................................................................ 47
Hold (Standby)................................................................................................................................. 47
Adjusting Filtration .......................................................................................................................... 48
Additional Filtration Information...................................................................................................... 49
Preferences...................................................................................................................................... 50
Messages.................................................................................................................................... 51-55
Max Stereo System .......................................................................................................................... 56-57
Fusion Docking Station..................................................................................................................... 58-59
Swim Spa Trouble Shooting Guide.................................................................................................... 60-61
Regular Maintenance Procedures...................................................................................................... 62-63
Swim Spa Care and Maintenance Records......................................................................................... 64-68
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SAFETY INSTRUCTIONS
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SAVE THESE INSTRUCTIONS
Included with your new spa is a safety sign. The sign is for you and your guest’s protection
and is suitable for outdoor use in wet locations. The sign should be placed in a location visible
to all users of the spa.
Please take time to point out the physical location of the safety sign and the importance of the
safety precautions displayed on the safety sign to all of your guests. Remember, your safety and
the safety of anyone who enjoys the use of your spa is our utmost concern.
The sign should be mounted with screws or another type of permanent fastener. Additional or
replacement signs can be obtained from your dealer or direct from the factory.
INTRODUCTION
It’s time to relax! You now have your very own portable spa by Master Spas, Inc. By fully understanding
the operation of each of the features of your new Master Spa, you will be assured of many years of
hassle-free, hot water therapy and fun.
Your safety is of paramount importance to the MasterSpas family. We urge you to read and become
thoroughly familiar with all safety aspects addressed in this manual.
Through reading and totally understanding the important information in your owner’s manual, you will
realize that you now own THE ULTIMATE RELAXATION MACHINE!

SAFETY INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
When installing and using this electrical equipment, basic safety precautions should be
observed including the following:
READ AND FOLLOW ALL
INSTRUCTIONS
WARNING – To reduce the risk of injury, do not permit children to use this product
unless they are closely supervised at all times.
A wire conductor is provided on this unit to connect a minimum 6 AWG (13.302mm2)
solid copper conductor between this unit and any metal equipment, metal enclosures of
electrical equipment, metal water pipe, or conduit within 5 feet (1.5m) of the unit
(For cord-connected/convertible units)
DANGER – Risk of injury.
a) Replace damaged cord immediately.
b) Do not bury cord.
c) Connect to a grounded, grounding type receptacle only.
(For units intended for indoor use only)
WARNING – For indoor use only. This unit is not intended for outdoor use.
(For units intended for outdoor use only)
WARNING – For outdoor use only. This unit is not intended for indoor use.

SAFETY INSTRUCTIONS
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IMPORTANT SAFETY
INSTRUCTIONS (CONT.)
(For units with GFCI)
WARNING – This product is provided with a ground-fault circuit interrupter locat-
ed on the front panel of selected swim spas and on the power cord of 120 volt
convertible spas. The GFCI must be tested before each use. With the product
operating, open the service door. When the product stops operating, this merely
indicates that the door is equipped with an electrical interlock. Next, push the
test button on the GFCI and close the service door. The product should not oper-
ate. Now open the service door, push the reset button on the GFCI and close the
service door. The product should now operate normally. When the product fails
to operate in this manner, there is a ground current flowing indicating the possi-
bility of an electric shock. Disconnect the power until the fault has been identified
and corrected.
DANGER – Risk of Accidental Drowning. Extreme caution must be exercised to prevent
unauthorized access by children. To avoid accidents, ensure that children cannot use
this spa unless they are supervised at all times.
DANGER – Risk of Injury. The suction fittings in this spa are sized to match the specific
water flow created by the pump. Should the need arise to replace the suction fittings
or the pump, be sure that the flow rates are compatible.
Never operate spa if the suction fittings are broken or missing. Never replace a suction
fitting with one rated less than the flow rate marked on the original suction fitting.
DANGER – Risk of Electric Shock. Install at least 5 feet (1.5m) from all metal surfaces.
As an alternative, a spa may be installed within 5 feet of metal surfaces if each metal
surface is permanently connected by a minimum 8AWG (8.4mm2) solid copper conduc-
tor to the wire connector on the terminal box that is provided for this purpose.
DANGER – Risk of Electric Shock. Do not permit any electric appliance, such as a light,
telephone, radio, or television, within 5 feet (1.5 m) of a spa.
WARNING – To reduce the risk of injury:
a) The water in a spa should never exceed 40˚C (104˚F). Water temperatures
between 38˚C (100˚F) and 40˚C are considered safe for a healthy adult. Lower
water temperatures are recommended for young children and when spa use
exceeds 10 minutes.
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SAFETY INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
(CONT.)
b) Since excessive water temperatures have a high potential for causing fetal
damage during the early months of pregnancy, pregnant or possibly pregnant
women should limit spa water temperatures to 38˚C (100˚F).
c) Before entering a spa, the user should measure the water temperature since the
tolerance of water temperature- regulating devices varies.
d) The use of alcohol, drugs, or medication before or during spa use may lead to
unconsciousness with the possibility of drowning.
e) Obese persons and persons with a history of heart disease, low or high blood
pressure, circulatory system problems, or diabetes should consult a physician
before using a spa.
f) Persons using medication should consult a physician before using a spa since
some medication may induce drowsiness while other medication may affect
heart rate, blood pressure, and circulation.
(For spas with a gas heater)
WARNING – Risk of Suffocation. This spa is equipped with a gas heater and is
intended for outdoor use only unless proper ventilation can be provided for an
indoor installation.
HYPERTHERMIA
Hyperthermia occurs when the internal temperature of the body reaches a level
several degrees above the normal body temperature of 98.6° F.
THE SYMPTOMS OF HYPERTHERMIA INCLUDE:
•Dizziness•Fainting•Drowsiness•Lethargy
•IncreaseinInternalBodyTemperature
THE EFFECTS OF HYPERTHERMIA INCLUDE:
 UnawarenessofImpendingHazard•FailuretoPerceiveHeat•Failureto
RecognizetheNeedtoExitSpa•PhysicalInabilitytoExitSpa•FetalDamagein
PregnantWomen•UnconsciousnessResultinginaDangerofDrowning

SAFETY INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
(CONT.)
DANGER – To reduce the risk of injury to persons, do not remove the suction grate.
Suction through drains and skimmers is powerful when the jets in the spa are in use.
Damaged covers can be hazardous to small children and adults with long hair. Should
any part of the body be drawn into these fittings, turn off the spa immediately. As a
precaution, long hair should not be allowed to float in the spa.
WARNING – Install the spa so that water can be easily drained out of the compartment
containing electrical components so as not to damage equipment. When installing the
spa make sure to allow for an adequate drainage system to deal with any overflow
water. Please allow for at least 2 feet of clearance around the perimeter of the spa to
provide enough room to access for servicing. Contact your local dealer for their specific
requirements.
WARNING – The spa should be covered with an approved locking cover when not in
use, to prevent unauthorized entry and injuries.
WARNING – People with infections, sores or the like should not use the spa. Warm and
hot water temperatures may allow the growth of infectious bacteria if not properly dis-
infected.
CAUTION – Safe temperatures for swimming or aquatic exercise is around 80˚F.
CAUTION – Risk of Electrical Shock. Do not leave CD compartment open. CD controls
are not to be operated while inside the spa.
CAUTION – Replace components only with identical components.
WARNING – Risk of Electric Shock. Do not connect any auxiliary components (for
example, additional speakers, headphones, additional audio/ video components etc.) to
the system. These units are not provided with an outdoor antenna.
Do not service this product yourself as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
If the power supply cord(s) are damaged, water is entering the speaker, CD compart-
ment, or any other component in the electrical equipment compartment area, the pro-
tective shield is showing signs of deterioration, or there are signs of other potentially
hazardous damage to the unit, turn off the circuit breaker from the wall and refer ser-
vicing to qualified personnel.

SAFETY INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
(CONT.)
The unit should be subjected to periodic routine maintenance once every quarter to
make sure that the it is operating properly.
DANGER – Risk of Electric Shock. A green colored terminal or a terminal marked G,
GR, Ground, Grounding or the symbol shown in Figure 14.1 of UL 1563 is located
inside the supply terminal box or compartment. To reduce the risk of electric shock,
this terminal must be connected to the grounding means provided in the electric supply
service panel with a continuous copper wire equivalent in size to the circuit conductors
supplying this equipment.
At least two lugs marked “Bonding Lugs” are provided on the external surface or on
the inside of the supply terminal box or compartment. To reduce the risk of electric
shock, connect the local common bonding grid in the area of the spa to these terminals
with an insulated or bare copper conductor not smaller than 6AWG.
All field installed metal components such as rails, ladders, drains, or other similar hard-
ware within 3m of the spa shall be bonded to the equipment grounding bus with cop-
per conductors not smaller than 6AWG.
SAVE THESE INSTRUCTIONS

SAFETY INSTRUCTIONS
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WARNING: CHILDREN SHOULD NOT USE SPAS OR HOT TUBS WITHOUT ADULT SUPERVISION
AVERTISSEMENT: NE PAS LAISSER LES ENFANTS UTILISER UNE CUVE DE RELAXATION
SANS SURVEILLANCE
WARNING: DO NOT USE SPAS OR HOT TUBS UNLESS ALL SUCTION GUARDS ARE INSTALLED
TO PREVENT BODY AND HAIR ENTRAPMENT.
AVERTISSEMENT: POUR ÉVITER QUE LES CHEVEUX OU UNE PARTIE DU CORPS PUISSENT
ÊTRE ASPIRES, NE PAS UTILISER UNE CUVE DE RELAXATION SI LES GRILLES DI PRISE D’ASPIRATION NE
SONT PAS TOUTES EN PLACE
WARNING: PEOPLE USING MEDICATIONS AND/OR HAVING AN ADVERSE MEDICAL HISTORY
SHOULD CONSULT A PHYSICIAN BEFORE USING A SPA OR HOT TUB.
AVERTISSEMENT: LES PERSONNES QUI PRENNENT DES MÉDICAMENTS OU ONT
DES PROBLÉMES DE SANTÉ DEVRAIENT CONSULTER UN MÉDECIN AVANT D’UTILISER UNE CUVE
DE RELAXATION
WARNING: PEOPLE WITH INFECTIOUS DISEASES SHOULD NOT USE A SPA OR HOT TUB
AVERTISSEMENT: LES PERSONNES ATTEINTES DE MALADIES INFECTIEUSES NE DEVRAIENT
PAS UTILISER UNE CUVE DE RELAXATION
WARNING: TO AVOID INJURY EXERCISE CARE WHEN ENTERING OR EXITING THE SPA OR HOT
TUB.
AVERTISSEMENT: POUR ÉVITER DES BLESSURES, USER DE PRUDENCE EN ENTRANT DANS
UNE CUVE DE RELAXATION ET EN SORTANT
WARNING: DO NOT USE DRUGS OR ALCOHOL BEFORE OR DURING THE USE OF A SPA OR
HOT TUB TO AVOID UNCONSCIOUSNESS AND POSSIBLE DROWNING
AVERTISSEMENT: POUR ÉVITER L’ÉVANOUISSEMENT ET LA NOYADE ÉVENTUELLE, NE
PRENDE NI DROGUE NI ALCOOL AVANT D’UTILISER UNE CUVE DE RELAXATION NI QUAND ON S’Y
TROUVE
WARNING: PREGNANT OR POSSIBLY PREGNANT WOMEN SHOULD CONSULT A PHYSICIAN
BEFORE USING A SPA OR HOT TUB.
AVERTISSEMENT: LES FEMMES ENCEINTES, QUE LEUR GROSSESSE SOIT CONFIRMÉE OU
NON, DEVRAIENT CONSULTER UN MÉDECIN AVANT D’UTILISER UNE CUVE DE RELAXATION
WARNING: WATER TEMPERATURE IN EXCESS OF 38˚C MAY BE INJURIOUS TO YOUR HEALTH
AVERTISSEMENT: IL PEUT ÊTRE DANGEREUX POUR LA SANTÉ DE SE PLONGER DANS DE
L’EAU A PLUS DE 38˚C
WARNING: BEFORE ENTERING THE SPA OR HOT TUB MEASURE THE WATER TEMPERATURE
WITH AN ACCURATE THERMOMETER
AVERTISSEMENT: AVANT D’UTILISER UNE CUVE DE RELAXATION MESURER LA
TEMPÉRATURE DE L’EAU À L’AIDE D’UN THERMOMÉTRE PRÉCIS

SAFETY INSTRUCTIONS
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WARNING: DO NOT USE A SPA OR HOT TUB IMMEDIATELY FOLLOWING STRENUOUS EXERCISE
AVERTISSEMENT: NE PAS UTILISER UNE CUVE DE RELAXATION IMMÉDIATEMENT APRÉS
UN EXERCISE FATIGANT
WARNING: PROLONGED IMMERSION IN A SPA OR HOT TUB MAY BE INJUROUS TO YOUR
HEALTH
AVERTISSEMENT: L’UTILISATION PROLONGÉE D’UNE CUVE DE RELAXATION PEUT ÊTRE
DANGEREUSE POUR LA SANTÉ
WARNING: DO NOT PERMIT ELECTRIC APPLIANCES (SUCH AS LIGHT, TELEPHONE, RADIO, OR
TELEVISION) WITHIN 1.5 M OF THIS SPA OR HOT TUB
AVERTISSEMENT: NE PAS PLACER D’APPAREIL ÉLECTRIQUE (LUMINAIRE, TÉLÉPHONE,
RADIO, TÉLÉVISEUR, ETC) À MOINS DE 1.5 M DE CETTE CUVE DE RELAXATION
CAUTION: MAINTAIN WATER CHEMISTRY IN ACCORDANCE WITH MANUFACTURER’S
INSTRUCTION
ATTENTION: LA TENEUR DE L’EAU EN MATIÉRES DISSOUTES DOIT ÊTRE CONFORME AUX
DIRECTIVES DU FABRICANT
Hyperthermia occurs when the internal temperature of the body reaches a level several degrees above
the normal body temperature of 37˚C. The symtoms of hyperthermia include drowsiness, lethargy, and
an increase in the internal temperature of the body. The effects of hyperthermia include
(a) unawareness of impending hazard;
(b) failure to perceive heat;
(c) failure to recognize the need to exit spa;
(d) physical inability to exit spa;
(e) fetal damage in pregnant women; and
(f) unconsciousness and danger of drowning.
WARNING: THE USE OF ALCOHOL OR DRUGS CAN GREATLY INCREASE THE RISK OF FATAL
HYPERTHERMIA IN HOT TUBS AND SPAS
LA CONSOMMATION D’ALCOOL OU DE DROGUE AUGMENTE CONSIDÉRABLEMENT LES
RISQUES D’HYPERTHERMIE MORTELLE DANS UNE CUVE DE RELAXATION.

GLOSSARY OF SWIM SPA TERMINOLOGY
1. THERAPY JETS
Your new swim spa features a variety of jet styles. All jets, regardless of style return the water
to the swim spa. Air is mixed with the water by using the air controls creating a gentle to most
vigorous massage. Water flow is adjusted by simply turning the outer face of the jet.
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Extreme Seat
2. JET DIVERTER VALVE
Located on the topside of the swim spa, this valve physically diverts the flow of water from one jet
zone of the swim spa to another jet zone.
Be sure that no sand or particles are brought into the swim spa as they will cause the diverter
to seize up. It is best to turn the diverter valve only when the pump is turned off.
Jet Diverter
3. AIR CONTROL VALVES
These are located around the top of your swim spa. You may increase or decrease the force of
your jets by opening or closing the air control valves. Typically, one dial controls the air to water
ratio and mix to one group of jets. When not in use the air controls should be kept in the closed
position, as air bubbles tend to cool the water.
Air Control Valve

GLOSSARY OF SWIM SPA TERMINOLOGY
4. TOPSIDE CONTROL PANEL
You may safely control all functions from inside or outside your swim spa using the
Topside Control Panel. This Panel is used to control the water temperature, pumps, the spa
light, automatic filtration cycles and other advanced functions. The digital display will give you
a constant temperature readout and will notify you in case of certain malfunctions. Several
user programmable functions are also available.
5. PROPULSION SYSTEM CONTROL PANEL
(H2X, CROSSTRAINER AND MOMENTUM ONLY)
You may safely control the speed of the propulsion system from the inside of your swim spa. This
panel is used to turn the propulsion system on and off and to adjust the intensity of the water flow.
6. PERSONAL REMOTE CONTROL
Your swim spa has an additional remote which allows the user to control the stand up jet therapy
zone. By pressing the control one time, you will activate the pump. Press the pad again to turn the
pump off.
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Personal Remote Control
7. EQUIPMENT ACCESS PANEL
Located behind the side panel below the Topside Control Panel, this area houses the major
components responsible for the swim spas operation. Those components include the pumps,
heater, control panel box, Ozonator, and LED light system. Pump and equipment placement
may vary by model.
8. PROPULSION SYSTEM CONTROLS ACCESS
Located behind the skirt directly beneath the propulsion system control panel (panel “E”).
see access panels on page 13. The propulsion motor, propulsion control pack, and pulleys for
the propulsion system are located in this area. This system is used on the H2X, Crosstrainer and
Momentum spas. The Crosstrainer 2 and the Crosstrainer SJuse a different type of swim system.

GLOSSARY OF SWIM SPA TERMINOLOGY
9. ACCESS PANELS
These are located on all four sides of the swim spa. All of the panels are removable should service
be required.
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Panel “B”
Panel “H” Panel “G” Panel “F”
Panel “E”
Panel “A”
Panel “C” Panel “D”
NOTE: The above drawing illustrates panel placement on the H2X. The CrossTrainer is labeled the same.
WARNING: Do Not Remove Access Panels Without Turning Off Power To The Swim Spa.
10. DRAINING YOUR SWIM SPA
Due to the physical size of the swim spa, we recommend draining your swim spa with a
submersable sump pump. Draining your swim spa with a conventional spa drain is not a
reasonable option. When draining the Momentum swim spa always drain the water from
the spa side before draining the swim side.
11. WEIR GATE
The weir gate is the horizontal door located in front of the filters that trap debris in the filter area.
12. SPA LIGHT
Your spa light is designed for safety and is located in the interior wall of your swim spa. The on/off
switch is located on the topside control panel.
13. EQUIPMENT CONTROL SYSTEM
This houses the wiring and electrical components necessary to operate the swim spa.
14. SWIM SPA HEATER
This element is an electric heater housed in a stainless steel tube. It is thermostatically controlled
and equipped with a high-limit temperature safety shut-off sensor. The high-limit sensor cannot
be reset until the temperature within the heater assembly drops several degrees below the shut-off
temperature of 108° - 110° F. Should the high-limit switch trip repeatedly, contact your dealer or
qualified service representative to diagnose the problem.

GLOSSARY OF SWIM SPA TERMINOLOGY
15. SLICE VALVES
These valves are used by service personnel to shut off water to the heater, main pump system
and secondary pump system so that the water does not need to be drained should the swim spa
require service.
*NOTE: Slice valves must be completely open during normal operation.
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Slice Valve and Pump Union
16. MAIN PUMP
This produces water flow through the extreme seat jets in the H2X and Crosstrainer. In the
Crosstrainer 2 and the Crosstrainer SJ, it also supplies water flow to the swim jets by turning the
diverter valve. The main pump may be operated on two speeds. Low speed will produce efficient
water circulation during filtration and gentle jet action. High speed should be used for maximum
jet action. The main pump is controlled by the “Jets 1 button on the Topside Control Panel.
17. SECONDARY PUMP
This pump produces water flow through the stand up jet system in the H2X and Crosstrainer. In
the Crosstrainer 2 and the Crosstrainer SJ, it also supplies water flow to the swim jets by turning
the diverter valve. The second pump operates similar to the main pump and is controlled by the
personal remote control on the surface of the swim spa.
18. PUMP UNION
These are used by service personnel to easily service the pumps.
19. HEATER UNION
These are used by service personnel to easily service the heater.
20. OZONATOR
Your onzonator will operate in conjunction with your filtration system. Ozone is a gas that
kills bacteria.
21. AIR BLEED VALVE
Used to relieve trapped air in pumps after filling spa. (Momentum only).
Air Bleed Valve

ELECTRICAL INSTALLATION REQUIREMENTS
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Permanently Connected Equipment Assembly with Pump(s), Heaters, Luminaine, Ozone, Spa Side
Control(s), Pump shut off device, and Audio/Video Components.
Note: Some of the above components may be optional or not available with every spa model.
ELECTRICAL INSTALLATION REQUIREMENTS
!! FOR H2X, CROSSTRAINER AND MOMENTUM ONLY !!
HAVE YOUR ELECTRICIAN READ THE FOLLOWING INFORMATION
BEFORE INSTALLATION BEGINS
Electrical connections made improperly, or the use of wire gauge sizes for incurring power
which are too small, may continually blow fuses in the electrical equipment box, may dam-
age the internal electrical controls and components, may be unsafe and in any case will
void your warranty.
It is the responsibility of the spa owner to ensure that electrical connections are made by a
qualified electrician in accordance with the National Electrical Code and any local and state
electrical codes in force at the time of installation.
These connections must be made in accordance with the wiring diagrams found inside the
control box. This equipment has been designed to operate on 60Hz. alternating current only,
240 volts are required. Make sure that power is not applied while performing any electrical
installation. A copper bonding lug has been provided on the electrical equipment pack to allow
connection to local ground points. The ground wire must be at least 6 AWG copper wire and
must be connected securely to a grounded metal structure such as a cold water pipe. All Master
Spas equipment packs are wired for 240 VAC only. The only electrical supply for your spa must
include a 50 AMP switch or circuit breaker to open all non-grounded supply conductors to
comply with section 422-20 of the National Electrical Code. A disconnect must be installed and
be readily accessible to the spa occupants, but installed at least five feet from the spa. A Ground-
Fault circuit interrupter (GFCI) must be used to comply with section 680-42 of the National
Electric Code. The H2X, Crosstrainer and Momentum spas come equipped from the factory
with a GFCI breaker and will not need to have one installed. The Crosstrainer 2 does not have a
GFCI breaker and will need to have as separate GFCI breaker installed (see pages 16 and 17 of
this manual). A ground fault is a current leak from any one of the supply conductors to ground.
A GFCI is designed to automatically shut off power to a piece of equipment when
a current fault is detected.
Power hook-up to the spa must be 240 volt 3 wire plus ground (6 AWG copper).
Route the cable into the equipment area for final hook-up to terminals inside the control panel.
The spa must be hooked up to a “dedicated” 240 volt, 50 amp breaker and GFCI.
The H2X, Crosstrainer and Momentum come equipped from the factory with this GFCI
breaker. The Crosstrainer 2 does not have a GFCI breaker and will need to have a separate GFCI
breaker installed (see pages 16 and 17 of this manual). The term “dedicated” means the electrical
circuit for the spa is not being used for any other electrical items (patio lights, appliances,
garage circuits, etc.). If the spa is connected to a non-dedicated circuit, overloading will
result in “nuisance tripping” which requires resetting of the breaker switch at the house
electrical panel.
Rev. 11/09

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ELECTRICAL INSTALLATION REQUIREMENTS
ELECTRICAL INSTALLATION REQUIREMENTS
!! CROSSTRAINER 2 AND CROSSTRAINER SJ ONLY !!
HAVE YOUR ELECTRICIAN READ THE FOLLOWING INFORMATION
BEFORE INSTALLATION BEGINS
Electrical connections made improperly, or the use of wire gauge sizes for incurring
power which are too small, may continually blow fuses in the electrical equipment
box, may damage the internal electrical controls and components, may be unsafe and
in any case will void your warranty.
It is the responsibility of the spa owner to ensure that electrical connections are made
by a qualified electrician in accordance with the National Electrical Code and any
local and state electrical codes in force at the time of installation.
These connections must be made in accordance with the wiring diagrams found
inside the control box. This equipment has been designed to operate on 60Hz.
alternating current only, 240 volts are required. Make sure that power is not applied
while performing any electrical installation. A copper bonding lug has been provided
on the electrical equipment pack to allow connection to local ground points. The
ground wire must be at least 6 AWG copper wire and must be connected securely to a
grounded metal structure such as a cold water pipe. All Master Spas equipment packs
are wired for 240 VAC only. The only electrical supply for your spa must include a
50 AMP switch or circuit breaker to open all non-grounded supply conductors to
comply with section 422-20 of the National Electrical Code. The disconnect must
be readily accessible to the spa occupants, but installed at least five feet from the spa.
A Ground-Fault Circuit Interrupter (GFCI) must be used to comply with section
680-42 of the National Electrical Code. A ground fault is a current leak from any
one of the supply conductors to ground. A GFCI is designed to automatically shut
off power to a piece of equipment when a current fault is detected.
Power hook-up to the spa must be 240 volt 3 wire plus ground (6 AWG copper).
Route the cable into the equipment area for final hook-up to terminals inside the
control panel. The spa must be hooked up to a “dedicated” 240 volt, 50 amp breaker
and GFCI. The term “dedicated” means the electrical circuit for the spa is not being
used for any other electrical items (patio lights, appliances, garage circuits, etc.). If
the spa is connected to a non-dedicated circuit, overloading will result in “nuisance
tripping” which requires resetting of the breaker switch at the house electrical panel.
Rev. 05/01/06
Permanently Connected Equipment Assembly with Pump(s), Heaters, Luminaine, Ozone, Spa Side
Control(s), Pump shut off device, and Audio/Video Components.
Note: Some of the above components may be optional or not available with every spa model.

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WIRING SCHEMATIC - 240 VOLT SWIM SPA HOOK-UP
(FOR CROSSTRAINER 2 AND CROSSTRAINER SJONLY)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
50 5050
TEST
50
1
2
3
4
5
WHITE (NEUTRAL)
BLACK (HOT)
RED (HOT)
GREEN (GROUND)
Instruments
Balboa
Incorporated
Wire Key
House Breaker Box
G.F.C.I Breaker Box
Spa System Box
Green (Ground)
Red (Hot)
Black (Hot)
White (Neutral)
NOTE: For a 240 V
dedicated hook-up, the
white neutral wire is
not required between
the G.F.C.I. and the
system box.
GRN
GRN (GROUND)
RED (HOT)
BLK (HOT)
BLK (HOT)
RED (HOT)
RED (HOT)
WHT (NEUTRAL)
WHT
WHT
BLK (HOT)
GRN (GROUND)
TB1
IDF00007.mac 6/17/97
* Actual wiring of GFCI will vary by manufacturer of GFCI. The GFCI shown is a Square D. Improper
wiring of GFCI may result in permanent damage to spa system box. Repair / replacement of spa
system box is not covered under warranty when damage results from improper wiring.
Junction Box

SITE PREPARATION / GENERAL GUIDELINES
Swim spa installation is simple when properly planned. To that end, it is important that you read the
following information carefully and consult with your Master Spas dealer.
1. Access - The actual dimensions of your new swim spa will determine the amount of space that is
needed in moving the swim spa from curbside to its final installation area. Be sure to measure side
yard dimensions, gates or doors and vertical obstructions such as roof overhangs and overhead
cables. Any other space limiting obstacles such as trees or shrubs must be evaluated.
2. Surface/Pad Requirements - When your new swim spa is filled with water and bathers, it may weigh
as much as several tons. It is imperative that the base beneath the swim spa can support the actual
weight. The swim spa must be on a uniformly firm, continuous, and level surface. The recommended
foundation is a concrete pad with a minimum thickness of four (4) inches with steel reinforce-
ment bars crossed throughout the pad.
IMPORTANT
Be sure to locate your swim spa so that equipment remains above grade and is not subject to flooding.
The equipment side(s) of the swim spa must be accessible in the event that future service is needed. In
the event that service is required, your dealer will need at least 2 feet of clearance around the perimeter
of the swim spa. Periodical maintenance checks require entry into the equipment bay. When possible, it
is wise planning for the future to leave access, to all sides of the swim spa in the event your swim spas
plumbing requires maintenance. Your swim spa warranty does not cover the cost of providing access
for service.
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