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A20 Glossary of Terms
Circuit Board: Printed circuit board assembly that distributes voltage to selected compo-
nents.
Control Panel: Component that allows user to access functions provided by the circuit
board.
Ammeter: Device which measures electrical current conducted through a wire or
electrical device.
Micro Chip: Chip on circuit board that stores hot tub software.
Flow Switch: Switch that informs circuit board there is sufcient water movement to acti-
vate heater. This switch identies water ow.
Hi-limit Sensor/Disk: Sensor that monitors water temperature inside heater.
Jumper: Device on circuit board that mechanically connects (bridges) two points
together.
Ohmmeter: Device that measures the resistance in ohms (Ω) of a component or tem-
perature sensitive device (e.g. temperature sensor, heater element etc).
CD Ozonator: A device that produces ozone gas by passing air through a corona dis-
charge (high voltage arc) chamber. Introduce ozone 24 hours a day until a
JETS button is pressed. Both lter cycle and ozone production is canceled
after a JETS button is pressed and then turn back on approximately 5 min-
utes after jets turn off.
Pin Assignments: Locations identied by numbers on circuit board.
Sensor Connector: Plug in connector containing the temperature sensor and hi-limit sensor
device connections.
Summer Logic: Deactivates Circulation Pump, CLEARRAY and/or optional ozone genera-
tor when hot tub water reaches 2°F (1°C) above the set temperature. Hot
tub water must be 95°F (35°C) or higher for summer logic to activate.
Temperature Sensor: Sensor that monitors hot tub water temperature.
Transformer: Device that converts primary high voltage AC signal to a secondary low
voltage AC signal.
Voltage Meter: Device that measures AC or DC voltage potentials across components or
from a specic test point to ground.
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