Moonlight spas ML 844 User manual

HOT TUB OWNER’S MANUAL
MODELS:
ML 736 (1301ML)
ML 844 (1302ML)
Premium Leisure, LLC
6101 45th St. N.
St. Petersburg, FL 33714
727.573.9611
Part Number 7302
Revised 09/2013

Owner’s Information
Dealer:
Date Purchased: __________________________
Company: __________________________
Address: __________________________
Telephone: __________________________
Installer: Date Installed: __________________________
Company: __________________________
Address: __________________________
Telephone: __________________________
Hot Tub:
Date Delivered: __________________________
Model: __________________________
Color: __________________________
Serial Number: __________________________
Your unique hot tub serial number is located on a data plate outside the
cabinet at ground level directly below the topside control panel. When
calling for service, have your serial number in hand.
Serial Number Location

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Introduction ............................................................................................2
Important Safety Information..................................................................3
Site Selection and Installation................................................................7
Startup.................................................................................................. 18
Water Balancing...................................................................................22
Topside Control....................................................................................24
Cover.................................................................................................... 27
Frequently Asked Questions ................................................................ 28
Troubleshooting ................................................................................... 31
Maintenance and Care.........................................................................34
Specifications.......................................................................................38
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Important: Moonlight Spas is dedicated to offering you the best in customer
satisfaction and service. Be sure to read, complete, sign, and send in the
limited warranty card within 30 days of purchase to ensure you understand
what you are entitled to in terms of service. If you have any questions, you can
call our customer care center, at 727.573.9611.
Printed in the U.S.A.
Version 1.0 Revised 09/2013 Part # 7302
Copyright © 2011, Premium Leisure LLC. All rights reserved. No portion of this manual may be reproduced in any manner
without express written permission of Premium Leisure LLC. Moonlight Spas™and Thermazone™are trademarks of
Premium Leisure LLC. All other brands, product names, company names, trade names, trademarks, and service marks
used are the property of their respective owners. Premium Leisure LLC may make product modifications and
enhancements. Specifications may change without notice. International products may be configured differently to meet
local electrical requirements. Dimensions are approximate. Patents pending.

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Introduction
Your choice of a Moonlight Spas™hot tub indicates that you are devoted to
excellence. The management and staff appreciate your patronage and takes
pride in the tradition of quality hot tubs that our company represents.
To properly acquaint yourself with your hot tub, we suggest that you take time to
read through this manual before hook up and operation. Doing so will familiarize
you with important operating and safety procedures, thereby ensuring an
enjoyable experience right from the start.
If you need any more information than this manual provides, feel free to visit our
Web sites at www.Moonlightspas.com or call our customer care center, at
727.573.9611.
WARNING: This manual was written to ensure the proper use and installation
of your hot tub. Any modifications to the procedures outlined in
this manual may result in voiding your warranty.
This manual and its contents are subject to change without notice. Although we
have prepared this manual as accurate as possible, we are not liable for errors or
omissions; loss, injury, or damages caused by improper installation; or use of hot
tub (improper or otherwise).
You new hot tub is made with quality synthetic cabinet materials. Synthetic
materials won’t fade and are nearly invulnerable to mold and mildew. Where
wood splits, cracks, and stains, synthetic materials stand in timeless perfection.

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Important Safety Information
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
Your physiological response to hot water depends on subjective factors such as
age, health, pregnant women, temperature sensitivities, chemical sensitivities,
and medical history. Always consult a physician before using a hot tub to
understand your particular tolerance and limitations.
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 connector is provided on this unit to connect a minimum 8 American Wire
Gauge (AWG) (8.4mm2) solid copper conductor between this unit and any metal
equipment, metal enclosures of electrical equipment, metal water pipe, or conduit
within 5 feet (1.5 m) of the unit.
* For cord connected / convertible units: Danger – Risk of injury.
Replace damaged cord, immediately. Do not bury cord. Connect to a grounded,
grounding type receptacle only.
** For units with GFCI: Warning – This product is provided with a ground-
fault circuit interrupter located in the main panel. The GFCI must be tested
before each spa use.
Dangers
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. Always cover the hot tub and use safety
locks when it is not in use.
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 the 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.
RISK OF ELECTRIC SHOCK: Install at least 5 feet (1.5 m) 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 8 AWG (8.4 mm2) solid copper conductor
to the wire connector on the terminal box that is provided for this
purpose.
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. Do not operate such an appliance from either inside the hot
tub or when you are wet, unless such appliances are built-in by the
manufacturer.

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Warnings
TO REDUCE THE RISK OF INJURY:
The water in a spa should never exceed 40˚C (104˚F).
Water temperatures between 38˚C (100˚F) and 40˚C
(104˚F) are considered safe for a healthy adult. Lower
water temperatures are recommended for young children
and when spa use exceeds 10 minutes.
Since excessive water temperatures have a high potential
for causing fetal damage during the early months of
pregnancy, pregnant or possible pregnant women should
limit spa water temperatures to 38˚C (100˚F).
Before entering a spa/hot tub, the user should measure the
water temperature since the tolerance of water temperature
regulating devices varies.
The use of alcohol, drugs or medication before or during
spa/hot tub use may lead to unconsciousness with the
possibility of drowning.
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.
Persons using medication should consult a physician before
using a spa/hot tub since some medication may include
drowsiness while other medication may affect heart rate,
blood pressure and circulation.
Do not connect auxiliary components (such as headphones, cables,
and additional speakers) to the stereo (if equipped).
Do not use a hot tub immediately following strenuous exercise.
Do not use your hot tub alone.
Lock the cover on your hot tub when not in use.
Persons with infectious diseases should not use a hot tub.
Replace audio components only with identical components.
Do not leave the CD access door open on the stereo (if equipped).
Some types of hair dye can react with the sanitizers in your hot tub
water causing your hair to change color. Use at your own risk.
Water normally splashes out of a hot tub during typical use. Install
an adequate perimeter that provides sound footing.
Do not turn your hot tub on/off from a wall switch, ground fault circuit
interrupter, circuit breaker, fuse, or by plugging/unplugging it.
Remove all jewelry, metal, and watches from your person before
entering your hot tub.
Keep all breakables away from the hot tub area.
Maintain water balance in accordance with instructions.

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Warning Sign
Warning Sign Must Be Posted – The red
WARNING sign like the one shown is packed
with your new hot tub. This sign must be posted
in a prominent place in close proximity to the hot
tub installation site immediately upon completion
of hot tub installation.
Important: It is extremely important that this sign be permanently placed in clear
view of persons using the hot tub. Occasional hot tub users may not be aware of
some of the dangers hot water poses to pregnant women, small children,
seniors, and people under the influence of alcohol. If you did not receive a
warning sign or your sign has become damaged, please call your local dealer for
a replacement.
Hyperthermia
To reduce the risk of injury, the water temperature in a hot tub should never
exceed 104˚F (40˚C). Water temperatures between 100˚F (38˚C) and 104˚F
(40˚C) are considered safe for a healthy adult. Lower water temperatures are
recommended for young children, senior citizens, persons with sensitivities, and
when hot tub use exceeds 10 minutes.
WATER TEMPERATURE IN EXCESS OF 100˚F (38˚C) MAY BE INJURIOUS
TO YOUR HEALTH.
Hyperthermia occurs when the internal temperature of the body reaches a level
several degrees above the normal body temperature of 98.6˚F (37˚C). The
symptoms of hyperthermia include drowsiness, lethargy, and an increase in the
internal temperature of the body. The effects of hyperthermia include:
Unawareness of impending hazard
Failure to perceive heat
Failure to recognize the need to exit hot tub
Physical inability to exit hot tub
Fetal damage in pregnant women
Unconsciousness and danger of drowning
If you sense any of the symptoms of hyperthermia, safely exit the hot tub
immediately.
SAVE THESE INSTRUCTIONS
Basic Safety Guidelines
Your hot tub is meant to be enjoyable, healthful, and relaxing. Below are some
basic safety guidelines to follow every time you use your hot tub.
Always check the temperature of your hot tub before entering. High water
temperatures can be hazardous to your health.
Persons suffering from heart disease, diabetes, high or low blood pressure,
and pregnant women should consult a doctor before using your hot tub.

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Persons under the influence of medication, drugs, or alcohol should not be
allowed into your hot tub.
Remove all jewelry, metal, and watches from your person before entering
your hot tub.
Do not allow children to use your hot tub without continuous supervision of
an adult.
Do not use your hot tub alone.
Test the ground fault circuit interrupter (GFCI) breaker prior to using your hot
tub each time to ensure it operates properly.
Any electrical devices near your hot tub must be GFCI protected and out of
reach from inside the hot tub.
Keep all breakables away from the hot tub area.
Lock the cover on your hot tub when not in use.
Enter and exit the hot tub slowly. Wet surfaces can be slippery.
Prolonged immersion can be hazardous to your health.
Maintain water chemistry in accordance with manufacturer’s instructions.
The hot tub is not to be used by persons with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have
been given supervision or instruction
Basic Water Quality Guidelines
During the initial filling of the spa, add a sequestering agent to combat
suspended minerals in the water. Allow water to circulate and filter for at
least 12 hours before adding any other chemicals.
Test water for PH, total Alkalinity, and Calcium hardness. The PH should be
7.2-7.8 and the total Alkalinity 80-180 PPM. Calcium hardness levels should
be maintained between 150 and 400 PPM. Adjust PH and total Alkalinity
(TA) utilizing the directions on the chemical bottles. Wait 15-30 minutes, test
and adjust if necessary.
Add 2 ounces of concentrated chlorinating granules (sodium Dichlor-s-
triazinetreone) on initial start up to begin sanitizing the spa water. It is
important not to add the chlorinating granules until the PH, alkalinity and
calcium hardness have been adjusted to their proper levels.
Check spa water with test strip for proper sanitation levels and adjust
accordingly to the proper levels. Free chlorine should be 2-4 PPM.
We recommend a minimum level of 2 PPM residual chlorine be maintained
in spa water. Be sure the pumps are running when adding chlorine or non
chlorine shock/oxidizer.
Add 1 ounce of non-chlorine shock/oxidizer or ½ ounce of chlorine to the spa
water after each spa use.

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Site Selection and Installation
Proper planning is an important consideration when installing your new hot tub.
Site selection is a critical step and requires serious thought. Planning ahead
makes the installation process easier. The following information is provided to
assist you in site preparations.
1) Always comply with local building codes and obtain any necessary permits.
You may also need to consult with an engineer to address your specific
design needs.
2) Contact an electrician to assess your electrical needs, install wiring, and
assure a safe operation.
3) Position your hot tub with proper access to water, drainage, and electricity.
4) Place your hot tub on a uniform solid, flat surface designed to properly
support its weight. For external installations, a 4-inch (10 cm) thick cement
pad suffices. See page 8 for conduit entry locations for your model hot tub.
5) For internal installations, check the load carrying capabilities of the floor on
which the hot tub will reside. Most homes meet the requirement of 80
pounds per square foot.
6) Assure that your hot tub will fit into the space you have chosen and the
delivery route will accommodate its large size.
7) Provide adequate ventilation for the humidity created by your hot tub. In
most cases, a Hot Tub Hard Cover is sufficient.
8) Protect the pump and all equipment from the weather by ensuring the
cabinet panels are secure at all times.
9) Allow 36 inches (1 meter) of unobstructed access to all sides of your hot tub
for normal servicing. Your hot tub is not designed to be recessed in the
ground or in a deck.
Figure 1 – Clearances and Support

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The following dimensions can be used to determine the proper location of
submerged conduits in concrete slab installations. All dimensions are made from
the outside of the hot tub’s frame with the access panels removed. The topside
control panel is shown at bottom of diagram for reference.
Figure 2 – Conduit Entry Location Reference Points
Model Dimension A Dimension B
1301 26” 12”
1302 20” 12”
Table 1 – Conduit Entry Location Dimensions
10) Consider positioning your hot tub out of or adequately protecting it from the
wind. Just as people can get cold on cool/windy days, so can your hot tub.
Windy environments can significantly increase operating costs.
11) Consider using an insulating pad. In cold climates, the ground can rob heat
from the hot tub and increase your operating costs.

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Electrical Specifications
Important – Qualified and licensed electricians must perform all electrical
hookups. The following specifications must be followed in order to ensure proper
performance and safety.
WARNING: Starting an incorrectly wired hot tub could cause severe damage
to the mechanical equipment or even bodily harm. Have your
licensed electrician verify GFCI (or RCD) wiring with the
diagrams on pages 10-18 prior to starting the hot tub or call the
technical support line at 727.573.9611.
Caution: Failure to abide by specifications listed may result in damage to the
equipment and will void the warranty.
All hot tubs must be wired with the appropriately sized wiring. Failure to do so will
cause equipment damage and will not be covered under your warranty.
All hot tubs must be over current protected with a built-in GFCI (or RCD for
export models) in the service panel.
Model Volts (V) Freq. (Hz) Rating (A) GFCI (A) Wire size from GFCI to Main Panel*† Equipment_Pack
1301, 1302 240 60 50 60
6-3 plus ground (up to 130’)
4-3 plus ground (up to 230’)
2-3 plus ground (up to 360’) VS510SZ
Table 2 – Domestic Wire Size Chart
Model Volts (V) Rating (A) RCD (A) Wire size from RCD to Main Panel‡Equipment Pack
1301,1302 220-
240 1x32 2x16 IEE Wire Regulation 3x4 mm2
5x1.5 mm2
GS510SZ
Table 3 – Export Wire Size Chart
WARNING: Disconnect electrical power before servicing. Before
obtaining access to terminals, all supply circuits must be disconnected.
WARNING: Test the GFCI (or RCD) before each use.
Our hot tubs are certified by Intertek Testing, SNAa Ltd.
Ontario, Canada to CSA-C22.2 No. 218.1-M89 and ANSI/UL
1563 standards.
*Wire size may need to be reduced at GFCI to fit into the breaker
†Solid copper
‡Solid copper

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Parts with extra low voltage not exceeding 12v must be inaccessible to a person
in the hot tub. Earthed appliances must be permanently connected to fixed
wiring. Parts incorporating electrical components, except remote control devices,
must be located or fixed so that they cannot fall into the hot tub.
Means for disconnection must be used in fixed wiring in accordance with wiring
rules.
Important – To allow the 240V GFCI to function properly, connect the white
Neutral wire from the hot tub to the Neutral terminal on the GFCI breaker, not the
Neutral bus in the GFCI breaker box. An improperly connected Neutral causes
the GFCI breaker to trip.
Wiring Diagrams
Figure 3 – 240V GFCI Wiring

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Figure 5 – U.S. and Canada Wiring Diagram
See wire size chart on page 9.

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Figure 6 – European 1x32A Wiring Diagram
All wiring is 3x4 mm2, solid copper
See wire size chart on page 9.
Note: Make sure that the DIP switches in the hot tub Pack are properly
set for 50Hz operation and Jumper A is in place.

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Figure 7 – European 2x16A Wiring Diagram
All wiring is 5x 1.5 mm2, solid copper
See wire size chart on page 9.
Note: Make sure that the DIP switches in the hot tub Pack are properly
set for 50Hz operation and Jumper A is removed.

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Figure –Wiring Diagram for All Domestic Models.
See wire size chart on page 9.

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Figure 8 – Board Diagram Single-phase 240V Domestic version
Figure 9 – Panel Button Positions for Models Single-phase 240V Domestic
version

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Figure 12 – GS510SZ Board Diagram for All EXPORT Models

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Figure 13 – Board Diagram and Panel Positions for all EXPORT Models
Figure 14 – Panel Button Positions for export models.