Operating instructions

The Safe Electrical Hook-up of Your Spa
Before beginning the wiring process turn off the circuit breaker so that no power is connected to the
controller. ThermoSpas recommends all spa wiring to be done by a licensed electrician. Improper wiring
may void your warranty. Incorrect or incomplete wiring will very likely create a dangerous hazard. Performing
a conversion or any other modification to the original hardware or installation configuration mandates that
the owner assumes full responsibility for assuring that the resulting system complies with all applicable nation-
al, state, and local wiring codes and ordinances for the location of the unit. Be aware that there are major
differences in wiring codes if this unit is to be installed at any location other than a private residence.
• The electrical installation of your spa must be done by a qualified electrician in
accordance with the National Electrical Code (NEC), and all local codes effective
at the time of installation.
• Your spa must be installed on a dedicated electrical circuit. No other appliances or
electrical equipment may be used on this circuit. 120 VAC Spas may be used on any
dedicated circuit with the proper amperage rating using the Plug-IN GFCI Cord Set.
(Not available in Canada)
If your spa is not installed in accordance with the NEC, it may create a dangerous
safety hazard. Improper electrical installation may also damage the inner workings
of a spa and void your warranty.
If your electrician is not absolutely sure how to correctly connect your
system, call the ThermoSpas Technical Service Department at 800.876.0158, option 2.
Mistakes may be costly and will invalidate your equipment warranty.
Electrical Set Up
Before beginning the wiring process turn off the circuit breaker so that no power is connected to the
controller. ThermoSpas recommends all spa wiring to be done by a licensed electrician. Improper wiring
may void your warranty.
Electrical Service Requirements:
Before wiring for a spa, one of the first considerations is whether or not your main service or subpanel
feeding your spa has the capacity to provide sufficient power to your spa. A licensed electrician will be
able to perform a load calculation to determine this.
The electrical requirements for your hot tub are found on the Electrical Guide Sheet contained in the
Welcome Kit (or at www.thermospas.com)for your specific model. It is very important to review your
electrical requirements before starting installation.
Wiring to your spa must be COPPER ONLY! Note that the wiring from a main panel to a
subpanel for the spa may be aluminum provided it is sized properly and the subpanel is
rated for aluminum or copper (AL/CU).
In all spa installations, refer to the The Electrical Guide sheet contained in the Welcome Kit or at
www.thermospas.com.
The length of the wiring from the panel or feed to your spa also has to be determined. If the total run
exceeds 75 feet, the wire size must be increased by one wire size to adjust for the corresponding voltage
drop. To make future service work easier we recommend leaving at least 6’ of slack in the main electrical wire
which may be coiled inside the cabinet.
Ground Fault Circuit Interrupt (GFCI) Requirements: All spa electrical circuits must be GFCI protected on a dedicated circuit.
It is common practice for electrical service for a spa to be supplied by a regular two-pole breaker at the rated
amperage at the main panel, and the disconnecting means (NEC Article 100) is usually a 125-amp subpanel with the
required GFCI breaker(s) mounted inside. The GFCI breaker becomes the required disconnecting means. These sub-
panels sometimes will not have a ground bar included and it must be purchased separately. The ground bar is a
small metal bar with holes provided for ground wires and screws to secure the wires to the ground bar. This
ground bar is NOT to be bonded or connected to the neutral bar, and the neutral bar must be isolated from
any grounding source. The GFCI pigtail in this instance is connected into the neutral bar—not the ground bar.
Installing Your Spa
15
Installing Your Spa
14
Suggested Wiring with GFCI Breaker to Subpanel
Before routing power to your spa, refer to the
Engineer Drawings in your Welcome Kit or at
www.thermospas.com for the recommended
drilling locations.
If you are routing the power through the side of
the spa, drill a small mouse hole at the bottom of
the cabinet panel closest to the power source. This
will allow the panel to be easily removed without
disconnecting the power line.
Do not rest your spa directly on top of a power line. Electrical shock or power failure
may result. The power line to the spa should be routed to come up through the bottom
of the spa cabinet or through the side wall by drilling a mouse hole.
Main Panel
(inside house)
Sub Panel at Spa
Spa Pac
Notes:
1. NEUTRAL & GROUND MUST BE ISOLATED AT THE SUB PANEL.
2. On Balboa TS Series Pacs, ground wire must enter the Pac through
strain relief and attach to ground bar on outside of Pac.
3. Positions of electrical connections may vary by breaker manufacturer.
4. For specific breaker and wire size refer to your Electrical Guide
Plug-In GFCI Cord Set (optional)
Only available for Genesis 100 spas wired for 120V AC
only - 60 Hz. (Not available in Canada)
Neutral / Ground Bar
Neutral Bar
White
Pigtail
Terminal block
Inside of Pac
Red
Load Neutral
(White)
Black
Ground
(Green)
Red
Black
Ground
(Green)
Neutral
(White)
Ground bar on outside of Pac
Isolated Ground Bar
SEE NOTE 2
GFCI
Breaker
(See Detail Below)
Breaker
(See NOTE 3)
GFCI Breaker Detail