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Option #1 Preferred Method - DRYWELL: If the existing placement of your temperature sensor
does not allow for an accurate temperature reading a drywell may have to be installed in the spa
wall. Once a location has been chosen, cut a 1 1/8” hole (cut from inside the spa). Clean excess
debris from around the hole. Use a water resistant silicone applied to the sealing surfaces and
insert the drywell into the hole. Tighten the drywell nut ( DO NOT over tighten). Insert
temperature sensor into drywell and insert grommet as shown below. Allow silicone to cure for
24-hours.
SEALING SURFACE
SEALING SURFACE
GROMMET
TEMPERATURE
SENSOR
Using a suitable 2“ diameter hole-saw, cut a hole in the spa wall. Cut from inside the spa wall
toward the outside to prevent splintering the inner surface. Remove any insulation material from
around the hole (at least 2“) at the outside spa wall. Install the gasket onto the light body and
install the light into the hole. Take care not to over tighten the nut securing the light body.
(Silicone sealant may be used in place of the gasket. Allow adequate time for sealant to cure before filling the
spa.)
Gasket
Light Body
Spa Wall
Light Bulb
TEMP. SENSOR INSTALLATION
SPA LIGHT INSTALLATION
Option #2 Alternate Method - HEATER HOUSING: If it is not possible or desired to drill a hole
into the spa shell the temperature sensor may be installed with the High-Limit sensor directly on
to the heater housing under the sensor shield/cover. Simply loosen, insert probe as shown and
re-tighten.
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