16
important:
All of the alternative electrical congurations require
a qualied technician to perform minor circuit board modications. To avoid
damage to the spa, do not activate power to the spa until these modications
have been made. We recommend Square-D or Cutler Hammer circuit
breakers.
Power Configurations for 680 Hartford, and Hawthorne Models
(North America, 60Hz)
This section describes the power configuration choices (Standard 50 Amp, Alternate 40
Amp, and Alternate 60 AMP) for Hartford and Hawthorne hot tub models.
Cong. #1
Standard 50A Configuration
(factory setting)
240 VAC/50A • 3-wire
configuration (2 hots and a
ground)
50A dual-pole GFCI breaker •
(hard wired only)
Electrical current draw of 36A •
If the home’s electrical system does not have
240 VAC/60A, the spa may be connected to
a 240V/50A power source after a qualified
electrician makes a minor circuit board
modification.
In this Standard 50A configuration, the heater
yields the same rapid temperature rise as in
60A operation, but does not operate while both
jets pumps are running in high-speed. Note:
Pump 2 runs only in high-speed.
Config. #2
Alternate 40A Configuration
(For homes where 240 VAC/50A or
240 VAC/60A power is unavailable).
240 VAC/40A 3-wire •
configuration (2 hots and a
ground)
40A dual-pole GFCI breaker •
(hard wired only)
Electrical current draw of 26A•
If the home’s electrical system does not
have the full 240 VAC/50A or 240 VAC/60A
power available, the spa may be connected
to a 240V/40A power source after a qualified
electrician makes a minor circuit board
modification.
In this configuration, the heater does not run
while either of the jets pumps run. Note: Pump
2 runs only in high-speed.
Config. #3
Alternate 60A Configuration
(Optional setting for maximum
heater performance.)
240 VAC/60A 3-wire •
configuration (2 hots and a
ground)
60A dual-pole GFCI breaker •
(hard wired only)
Electrical current draw of 45A•
If the home’s electrical system has the full
240V/60A power available, the spa may be
connected to a 240V/60A power source after
a qualified electrician makes a minor circuit
board modification.
In this configuration, the heater operates while
both jets pumps are running in high-speed.
This may be preferable for owners of outdoor
spas in cold climates because it will help their
spas maintain water temperature during use.
Note Wire size must meet NEC recommendations and is determined by
maximum current draw and length or run.