This document provides instructions for safely installing and operating a hot tub or spa. It explains the electrical requirements, including needing a dedicated 20 amp circuit for 110V spas. It describes surface and pad requirements, such as using a level concrete pad. Safety precautions are outlined, like not using the spa alone or while under the influence. Installation of gas lines is also covered.

4. 2a

5. CONTROL PANELS
(OPTIONAL)
CONTROL PANEL
AIR SWITCH
SPA SIDE THERMOSTAT
FUNCTION LIGHTS
AIR SWITCH
CONTROL PANEL
Your Spa may be operated by one of the CRL Control Panels shown above or by another method selected
by your Spa's Manufacturer. This manual is applicable to all models of Air-type Push Button Controls.
regardless of configuration.
3

6. IMPORTANT
SAFETY INSTRUCTIONS
WHEN INSTALLING AND USING THIS ELECTRICAL EQUIPMENT, BASIC SAFETY PRECAUTIONS
SHOULD ALWAYS BE FOLLOWED, INCLUDING THE FOLLOWING:
i. READ AND FOLLOW ALL INSTRUCTIONS.
2. DANG ER· To reduce the risk of injury, DO NOT permit children to use this product unless they
are closely supervised at all times.
3. Connect only to a properly grounded Grounding Type Receptacle.(� 10 volt units only)
4. DO NOT BURY CORD(110voltunitsonly)
5. WARN I NG • To reduce the risk of electrical shock, replace damaged cord immediately.
6. DANGER · To reduce a risk of injury to persons, DO NOT REMOVE Suction Grate(s) or
Cover.
7. A Pressure Wire Connector is provided on the surface of the Control Box inside the spa to permit
connection of a Bonding Wire between this point and any grounded metal equipment, metal enclosures
of electrical equipment, metal water pipe of conduit within five feet of the spa as needed to comply with
local requirements. The Bonding Wire must be a least a No. 8 AWG solid copper wire.
8. (220 Volt units only)· A wire connector marked "G", "GR" "GROUND", or "GROUNDING" Is provided
within the Control Box(orfactory installed wiring "Pigtail". To reduce the risk of electric shock.connect
this connector to the Grounding Terminal of your electric service or supply panel with a continuous
Green Insulated Copper Wire equivalent in size to the circuit conductors supplying this equipment. but
no smaller than No. 12 AWG (a.amm'j. In addition, a second wire connector is provided for bonding to
local ground points. To reduce the risk of electric shock. this connector should be bonded with no
smaller than No. 8 AWG (8.4 mm1) solid copper wire to any metal ladders, water pipes, or other metal
within 5 feet (1.52m) of the tub.
9. This equipment is provided with a factory installed Ground Fault Circuit Interrupter located on the Spa
Pak Control Box. Before each use with plug connected to the power, push the Test Button the unit
should stop operating and the Reset Button should appear. Push the Reset Button. The unit should now
operate normally. If the Interrupter fails to operate in this manner, there is a ground current flowing
indicating the possibility of electric shock. Disconnect the plug from the receptacle (for 110 volt Spa)
until the source of the breakdown has been identified and corrected. (For 220 volt Spas, tum off main
circurt breakers.)
1 O. Install to provide drainage of compartment for electrical components to keep water out of the
electrical equipment
11. DANGER· Risk of Electric Shock.· Install Spa at least 5 feet (1.52m) from all metal surfaces. (A
spa may be Installed within 5 feet of metal surlaces if each metal suriace is permanently connected bya
minimum No. 8 AWG (8.4 mm2) solid copper conductor attached to the wire conductor on the terminal
box that is provided tor this purpose.)
12. WARN I NG -This Spa Equipment is intended for indoor use only(orinstallation under a Spa
Skirt constructed as to provide protection of this equipment from all wet weather conditions.) This Spa
Equipment is not intended for outdoor use.
13. DANGER· Risk of Electric Shock. DO NOT permit any electic appliance, such as a light,
telephone, radio, or television, within 5 feet (1.5m) of a spa or hot tub.
14. SAVE THESE INSTRUCTIONS
4

7. START RIGHT HERE:
Before going further, determine exactly what model Equipment Pak you have in yourspa, and what options
you have selected. Inside the Removable Access Coverof your Equipment Pak Is a Permenant Label which
easily Identifies your Equipment Pak. Before connecting your Spa to any Power Source, remove the
Equipment Cover and record the information contained on the Identification Label in the space provided.
..,....-sERIES OPTIONS
A
• c D E F Q
t t t t t t t
1
MOOEL Ml 2 (L) (LG) (UR) (HA) (1.5)
3
MODEL NUMBER
A Thts identifies your Spa Pak as one of CRL's Ml Series of Paks
B. This identifies the Voltage (1 ,2 are 110 volt), (3 is 220 volt)
C. (L) Option indicates that the Light Receptical installed in your Pak is turned ON/OFF via an Air Switch
installed In the Pak.The absence of(L) Option indicates that the Light Receptlcai In your Pak is Hot (ON)
all of the time and if a Spa Light is installed in your Spa, it is turned ON/OFF in some other manner
(consult your Spa Manufacturer).
D. (LG) Option indicates that the Thermostat that controls the Spa WaterTemperature Setting is located
remote from the Spa Pak (normally on the Spa Lip). Absence of the (LG) Option indicates that the
Thermostat is located upon the face of the Spa Pak.
E. (UR)Option Indicates that the Pak is recognized under the Underwriters Laboratories, Inc. component
recognition program.
F. (HA)Option indicates that the Air Blower is equipped with a Heating Element that allows the Air Blower
to operate at 2 Speeds (Low Speed with Heat, High Speed without Heat). The Air Heater pre-heats the
BlowerAir, which slows down the cooling effect of the Air Blower. Warm Air Blowers are 1.5 Hp. Absence
of the (HA) Option indicates a 1 ·Speed 1.5 Hp Blower (unheated).
G. (1.5) Option indicates a 1.5 Hp Hayward 2-SpeedJet Pump upgrade ln lleu of the pump specified bythe
model number. The(1.5)0ption supersedes the Model NumberPumpSpeciftcation. NOTE: This option
is only available on 230 volt units.
Now that you're thoroughlyfamiliarwith yourSpa Pak's Options, make sure the model numberand options
are entered below, then continue on.
MODEL
�=;---' Volts Amps
1 1
DATE PURCHASED / --- /19, _
DEALE,H....---------------
ADDRESS, _
CITY/ST/ZIP· _
PHONE(
CRL ELECTRONICS, INC.
SPA PAK POWER CHASSIS
SAVE THIS MANUAL AND
THIS INFORMATION
5

8. SAVE THESE INSTRUCTIONS
CAUTIONS
PERSONS SUFFERING FROM HEART DISEASE, DIABEJES, HIGH OR LOW BLOOD PRESSURE,
PREGNANT WOMEN OR ANY OTHER SERIOUS ILLNESS SHOULD CONSULT WITH THEIR
PHYSICIAN BEFORE USING THE SPA
EXCESSIVE WATER TEMPERATURE CAN BE DANGEROUS.
DO NOT ENTER THE SPA WHILE UNDER THE INFLUENCE OF ALCOHOL AND/OR DRUGS. PER·
SONS ON MEDICATION SHOULD CONSULTWITHTHEIR PHYSICIAN BEFORE ENTERING THE SPA
OBSERVE A REASONABLE TIME LIMIT IN SPA. LONG EXPOSURES AT HIGHER TEMPERATURES
CAN RESULT IN DIZZINESS, AND OR HYPERTHERMIA (UNUSUALLY HIGH FEVER).
ALWAYS ENTER AND EXIT A SPA SLOWLY. IT IS RECOMMENDED THAT CHILDREN BE SUPER·
VISED WHEN USING THE SPA. IT IS RECOMMENDED NOT TO USE THE SPA ALONE.
DO NOT BRING ANY ELECTRICAL APPLIANCES INTO OR NEAR THE SPA. NEVER OPERATE ANY
ELECTRICAL APPLIANCES FROM INSIDE THE SPA OR WHILE WET.
THE CONSUMER PRODUCT SAFETY COMMISSION HAS STATED THAT WATER TEMPERATURE
IN A SPA OR HOT TUB SHOULD NOT EXCEED 104 DEGREES F. IMMERSION IN WATER IN
EXCESS OF 104 DEGREES F. CAN BE HAZARDOUS TO YOUR HEALTH.
6

9. GETTING READY FOR DELIVERY AND SET·UP
OF YOUR NEW SPA
ELECTRICAL REQUIREMENTS-ALL SELF·CONTAINED SPA-110 VOLT, OR
220 VOLT ELECTRIC HEATERS.
1. Your 110 Volt Spa requires an isolated (no other appliances or lights on this circuit at any time) 110
volt, 20 Ampere Grounded Circuit
2. Your 220 Volt Spa requires a 50 Ampere Grounded Circuit with a neutral lead brought in, or a
separate breaker to each piece of equipment. See your equipment schematics for voltage and
amperage.
3. Extension Cords are not to be used in conjuction with the operation of the spa. Low voltage damage
could result, which is not covered by warranty.
4. If you have anydoubts, haveyourelectrical systen checked bya qualified electrician. Use #8 wire (up
to 40 feet), #6 wire (over 40 feet) 1" conduit, 4 wires.
GAS HEATER REQUIREMENTS
1. Gas Lines must be run to within three feet of the Spa Heater.
2. If the Gas Line run is under fifty feet from the gas meter, use 1/2 inch line.
3. If the Gas Line run is over fifty feet from the gas meter, use 3/4 inch line.
4. Use a 1 /2 inch Compression Cou�er with a minimum of five feet of Flex Line.
5. It is the customer's responsibility for the gas line installation, hook up and any permits that might
be necessary.
SURFACE AND PAD REQUIREMENTS
1. Your riew spa should be placed on a uniformly firm and level surface.
2. A 4" thick concrete pad with reinforcing is recommended.
3. If you spa is located near sprinklers, adjust or cap them so as not to hit the siding of the spa.
4. Balconies and decks must be constructed to current state and local codes and should support
75 pounds per square foot.
5. Gates should be self-closing and self-locking.
7

10. 110 VOLT CONNECTIONS
If your spa is for 110Vott AC. Operation. you will receive the Electrical Equipment Control Box with a Three
Wire Ten Foot Power Cord and Male Plug attached Connect the electrical power cord Into a grounded
electrical receptacle nocloserthan six(6) feet to the SpaThe powercord should be installed In such a man-
ner as to be out of the way to the normal foot traffic to and from the Spa and situated such that it cannot be
stepped on or tripped over.
Your Spa. when connected to a 110 volt power source requires a 20 Ampere isolated, dedicated electrical
circuit. A dedicated circuit Is one where no other electrical appliances are connected on the same
circuit.
If a 20 Ampere dedicated circuit is not available, or there is a question as to the circuit serving other electri
cal appliances, it is the responsibility and obligation of the owner/user to have one installed by a qualified
electrician. Operating your spa on a circuit which has other electrical appliances connected to it will void
the warranty on the electrical equipment.
110 Volt Operation requires a Three-wire Electrical Service at the Main Circuit Breaker -
(Line 1 = Hot, Black; Neutral, White; and Green, Ground).
CAUTION
Under No Circumstances shall an extension
cord be used to extend the power cord from the
Spa's Electrical Equipment Pack. Use of an
extension cord will Invalidate the warranty and
will damage the electrical components. In
addition, use of an extension cord could
present a personal electrical hazaard to the spa
user.
Electrical Safety Features are designed in the system including a Ground Fault Circuit Interrupter (GFCI).
which automatically turns off electrical power to the spa equipment should an electrical fault occur in the
system. More user information on the use of this protection switch is covered under Operation Of
Equipment.
220 VOLT CONNECTIONS
Units to be operated at 220Volts do not come with an Electrical Power Cord attached as for units operated
at 11 O Volts. bu� rather with color coded Four·wire "Pigtails" for power connections. Electrical connections
for spas at this voltage must be accomplished by a Qualified Electrician. All Input wiring, conduits and 220
volt connections must be in accordance with the National Electric Code (NEC) or other ElectrK;BI Local
Codes in effect at the time of installation.. ...,
YourSpa, when connected to a 220 Voll PowerSource, requires a 50 Ampere Isolated, Dedicated Electrical
Circuit. Adedicated circuit is one where no other electrical appliances are connected to the same circuit. If
a 50 Ampere Dedicated 220 Volt Service Circuit is not available, or there is a question if the circuit serves
othere!ectrical appliances, it is the responsibility and obligation of the owner/user to have one installed by
a qualified electrician. Futhermore, the maximum allowable distrance from the spa to the 220 volt circuit
breaker shall be no more than 165 feet.
8

11. CAUTION
For220 Volt Operation ofyourspa, the minimum
wire size of connecting powerwires shall be no
smaller the #6 AWG and furthermore shall be
run only in approved electrical conduit from
the spa to the Main Circuit Breaker. The con·
dult shall be securely grounded.
220 Volt Operation requires a Four-'Mre Electrical Service at the Main Circuit Breaker - (Line 1. Black;
Line 2, Red; Neutral, White; and Green, Ground). Refer to the Wiring Diagram in this manual.
DESCRIPTION AND USE OF OPERATING CONTROLS.
1. Sequence for Air Activated Controls for Therapy Functions.
AIR SWITCH PUSH BUTION
JETS - Push to switch from Low to High, Push again to switch from High to Low. It activates the
specific TherapyJets; Low for Heat and Filtration (see time clock and freeze protection)
High for Vigorous Jet Therapy.
BLOWER - Push to switch from Off to On. Push again to switch from On to Off. It activates the
Vigorous Bubbles In the spa for General Therapy.
NOTE: Spa should be left with the Jets In Low Mode and Blower In Off Mode when not using.
110 Volt spas will only heat In this mode.
Chemicals should be added only when the Spa has Jets in High Mode and Blower in On Mode for
15·30 Minutes.
SEQUENCE COMBINATION FOR AIR SWITCH PUSH BUTTONS
FOR 110 VOLT OPERATION
JETS LOW-BLOWER OFF -
Water Pump operates at a Low Speed and the 1500 Watt Heater turns on if a demand
from the thermostate is made for heat.
JETS HIGH-BLOWER OFF -
Water Pump operates at a High Speed.
JETS LOW-BLOWER ON -
Only the Air Bubbles operate.
JETS HIGH-BLOWER ON -
Water Pump operates at a High Speed, Air Bubbles operate.
9

12. SEQUENCE COMBINATION FOR AIR SWITCH PUSH BUTTONS
FOR 220 VOLT OPERATION
JETS LOW-BLOWER OFF -
Water Pump operates at a Low Speed and the 6000 Watt Heater turns on if a demand
from the Thermostat is made for heat.
JETS HIGH-BLOWER OFF -
Water pump operates at a High Speed and the 6000 Watt Heater turns on if a demand
from the Thermostat is made for heat
JETS LOW-BLOWER ON -
Air Bubbles operate,Water Pump will come on if a call for heat is made by theThermostat
and 6000 Watts of heat is available.
JETS HIGH-BLOWER ON -
Air Bubbles operate. Water Pump operates at a High Speed and the 6000 Watt Heater
turns on if a demand from the Thermostat is made for heat.
2. TEMPERATURE CONTROL THERMOSTAT
With the Electrical Equipment Control Unit in any Heat Mode, this Thermostat will control the Electric
Water Heater. Turning this control tullycounter·clockwise will turn the Heater off. As the Thermostat is
turned clockwise, the Heater will be regulated accordingly from warm to hot. The Heater will not heat
the spa water above 104 degrees Fahrenheit. Spa water temperature can be monitored with an
accurate mercury-type or digital thermometer hung in the water. Inexpensive, "everyday general use"
mercury thermometers do not give an accurate water temperature reading. Some models have the
Thermostat Control on the Top Panel and some models have the Thermostat Control on the Support
Equipment
3. GROUND FAULT CIRCUIT INTERRUPTER (GFCI)
This Control prevents electrical current leakage into the spa water or other conducting devices on this
spa. You may also turn off all of the equipment electrical power by pressing the "OFF" Button on the
GFCI. If the GFCI is turned off either manually or automatically, the "ON" or "RESEr' Button must be
pressed to restore power to the Electrical System In the Control Box.
NOTE:
In a 220 l'olt Wired Spa, the GFCI will shut down the
Electrical System If there is an electrical fault In the
Pump Motor, Air Blower and asaoclated control.
Refer to the section on testing this control under
Important safety lnstructk>ns contained elsewhere
in this manual.
4. HIGH TEMPERATURE RESET SWITCH
ln the event of the Water Heater malfunction or its controlling circuitry, (water temperature rising too
high), this switch opens and automalically removes electrical power to the Heater. In order to restore
power to the Electric Heater, it is necessaryto press and release the Reset Button on the Limit Switch. If
this switch repeatedty trips, (opens) call your spa dealer.
10

13. 5. SPA LIGHT CONTROL (Optional)
If you have the Optional Spa Light installed in your spa, this control, which is mounted on the top lip of
the spa, controls the Light. One push on this air activated switch turns the light on and one push will turn
the light off, as desired.
6. TIME CLOCK
With the Time Clock Switch in the Off Position and the Toggle Switch for Freeze Protection/Time Clock
in the Time Clock Position the Low Speed Pump is activated in Mode One (too panel control) by the
Thermostat Control.
With the Time Clock Switch In the On Position and the Toggle Switch for Freeze Protection/Time Clock
in the Time Clock Position the Low Speed Pump is controlled by the Time Clock and will run only when
the Time Clock turns it on or off. The Spa will heat then if there is a demand by the Thermostat onlywhen
the Pump is running by Time Clock Control. The Time Clock is on when the Tripper Lug opposite the
arrow on the clockface is pulled up (towards you). NOTE: As soon asthe clock encounters a Tripper Lug
in the Down Position, the clock goes off until another Tripper Lug in the Up Position is found.
7. FREEZE PROTECTION
With the Toggle Switch for Freeze Protection/Tlme Clock in the Freeze Protection Mode, the Low
Speed Pump will come on anytime there is a demand for heat to keep the spa and plumbing from
freezing. This switch will override the Time Clock.
INITIAL START UP AND OPERATING PROCEDURES
CAUTION
BEFORE PERFORMING THE OPERATIONS IN
THIS SECTION, MAKE SURE YOU HAVE READ
AND UNDERSTAND ALL OF THE PREVIOUS
INSTRUCTIONS SET FORTH IN THIS MANUAL
MAKE SURE THE SPA HAS BEEN INSTALLED
CORRECTLY, INCLUDING ELECTRICAL
WIRING CONNECTIONS AS SPECIFIED IN
PREVIOUS SECTIONS.
CAUTION
DO NOT OPERATE THE SPA WHEN THERE IS
NO WATER IN THE TUB.
After you have read and completed all installation instructions in accordance with the procedures set forth
in this manual, spa start-up procedures may be started.
Turn off the Main Circuit Breaker to ensure no electrical power is applied to the spa.
Fill spa with water to a level of approximately 3 inches above the bottom of the Skimmer Openings.
Turn Thermostat Knob fully counter clockwise to the off position (no heat demand).
Turn on electrical power by setting this Main Circuit Breaker to on. (Whether 110 or 220 'Volt con-
nected Systems).
Activate this Remote Control Unit by pushing the Function Switch Buttons, and run through the complete
operational cycles by successively activating the controls. Each activation of the Remote Control auto-
matically changes the Mode of the system in predetermined successive order as described in description
and use of operating controls.
11

14. TROUBLE SHOOTING GUIDE
Your Spa will normally function for long periods without interruption caused by mallunction. Occasionally,
however, incidentsoccurwhich maycause stoppage of the system orcertainfunctions. The following infor-
mation is presented to simplify checking and curing certain operating problems that may occure. In the
event of prolonged or chronic equipment problems, do not contact the factory but always contact your
dealer first, who is qualified to diagnose and solve conditions and problems affecting your spa.
REMEMBER THE IMPORTANT SAFETY INSTRUCTIONS AT ALL TIMES.
PROBLEM CAUSE SOLUTION
THERMOSTAT SET ADJUST THERMOSTAT KNOB
TOO LOW CLOCKWISE
REMOTE CONTROL SET SET REMOTE UNIT
(PUSH BUTTON) TO FUNCTION #1
WATER COLD UNIT TRIPPED OFF PRESS RED HIGH HEAT LIMIT TO
RESTART BUTTON ON UNIT. IF
UNIT PERSISTS IN STOPPING,
CONTACT DEALER
INSUFFICIENT TIME CONTINUE IN FUNCTION #1 UNIT
TO HEAT TAKES AT LEAST 10-12 HOURS
TO REACH DESIRED
TEMPERATURE AFTER FILLING
OR REFILLING
UNIT WILL NOT MAIN BREAKER TRIPPED CHECK TO BE CERTAIN SPA IS
OPERATE NOT ON A COMMON CIRCUIT
WITH OTHER UNITS. THIS CAN
CAUSE OVERHEATING.
CHANGE TO ISOLATED CIRCUIT.
UNIT RUNNING, CONTROL SWITCH BE CHECK TO BE CERTAIN UNIT IS
BUT WILL NOT WIRED IMPROPERLY OR PLUGGED IN. IF 0.K. AND UNIT
SWITCH LOOSELY OR UNIT WILL WILL NOT SWITCH, CONTACT
NOT FULLY PLUG IN DEALER.
JETS SURGING LOW WATER LEVEL FILL TO 3" ABOVE BOTTOM OF
INSPA SKIMMER OPENING
UNIT TRIPS HEAT LOW WATER LEVEL FILL TO 3" ABOVE BOTTOM OF
LIMIT SWITCH INSPA SKIMMER OPENING
OPERATING IN
HEAT MODE
FUNCTION #1
WATER PUMP AIR IN WATER LINES OR LET PUMP RUN AND OPEN DRAIN
CAN BE HEARD WATER PUMP NOT PRIMED HOSE BIB UNDER SKIRT TO
RUNNING BUT (THIS USUALLY OCCURS ALLOW AIR TO ESCAPE FROM
WATER NOT WHEN FILLING THE SPA THE JET WATER LINES. CLOSE
COMING OUT OF WITH WATER THE FIRST HOSE BIB AFTER ALL AIR HAS
JETS TIME ESCAPED. REFILL SPA WITH
WATER AS NECESSARY
The Electrical Parts Warranty is on an exchange component basis only. Return suspect part to dealer for
test on replacement of defective part for first year of operation. There is no labor warranty.
12