The QT 80
, is a “through- hull” submersible marine light
tested at front of glass to IP68 at 10 bar. The light is suitable for
installation into GRP-fiberglass and wooden hulls.
The light must be
installed below the minimum waterline. The boat must be out of the water for
installation. Maintenance of the LED is carried out from inside the hull.
The LED driver is integral with the light.
|Lamp Type (24W)
||Single LED chip- 2,200 lm- 7,200K (Cool White)
|Lamp Type (80W)
||Single LED chip- 5,500 lm- 7,200K (Cool White)
||Aluminium Bronze & 5083 ALU
||Borosilicate wide beam glass as standard
|Voltage & Amps (24W)
||Min 11VDC- 2.0 A- Max 28VDC- 0.8 A
|Voltage & Amps (80W)
||Min 11v- 7.5 A- Max 28v- 2.8 A
||20,000 hours @ 60° C
Installation & Instructions
Qt LED 80 Installation (Maximum
hull thickness 60mm) and Operation instructions.
The Qt 80 is a “through-hull” submersible
marine light and is delivered ready for installation. Maintenance of the LED is
carried out from inside the hull. The light is suitable for installation into
GRP-fiberglass and wooden hulls. The 80 watt 7200K (cool white) led is driven by
an integral DC driver (11-28vdc) The standard LED produces 5,500 lumens
- Colour temperature of 7,200K. Other colours are available on
Qualified/Approved personnel must be used to carry out installation
Before cutting a 60mm hole in the hull, check the hull wall thickness is not
greater than 60mm. The location of the holes must be below the waterline. After
finishing the hole surface, check the Body (1) can be inserted. Note for cored
hulls - After cutting, the exposed surfaces of the hole must be finished to form
a solid surface through it. Thus protecting the internal core of the hull. The
wall thickness of the hole should not to less than 5mm-0.25inch. Apply 3M-4200FC
sealant to the ‘Body’ (1) flange. Slide the body into the hole and from inside
the hull put the ‘compensating ring’ (2) on and screw the securing ring’ (3) up
hand tight. Gently tighten the adjustment screws (6) so the compensating ring is
flush to the hull and the sealant has flowed completely around the flange and
Do NOT overtighten the bolts as this will squeeze the
sealant from the surfaces. Allow the sealant to solidify and remove surplus.
Finally tighten the bolts to 4Nm. / 3ft. lbs.
When all parts are assembled and the sealant has cured tighten the cover (5)
to secure the heatsink (4) into the body. If this is not done it will cause
overheating of the LED and the LED could fail.
Caution: do not operate lights unless totally submerged.
After completing the installation procedure it is highly recommended to coat
the BODY (1) face with antifouling and bond the lights to the anodes or a
cathodic protection system as shown below.
EARTHING LIGHT FOR CATHODIC PROTECTION - tighten the earth screw on
the securing ring so that it bites into the screwed barrel. Check there is
continuity to the front face. This prevents galvanic corrosion.