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during the winter months when the arc of the sun is lowest
over the horizon.
5. MODULE TILT ANGLE
KC series modules produce the most power when they are
pointed directly at the sun. For stand alone installations the
solar modules should be tilted for optimum winter
performance. As a general rule, if the system power
production is adequate in the winter, it will be satisfactory
during the rest of the year. The solar module tilt angle is
measured between the solar modules and the ground.
Refer to the recommended module tilt angle table for your
site.
SUNLIGHT
HORIZONTAL
Module Tilt Angle
Recommended Tilt Angles for Stand Alone
Fixed Systems—Based on Winter Performance
SITE LATITUDE
IN DEGREES
0 TO 15
15 TO 25
25 TO 30
30 TO 35
35 TO 40
40 +
For grid tie installations where the solar modules are
attached to a permanent structure, the solar modules
should be tilted at an angle equal to the site's latitude. This
will typically result in the highest annual energy output.
6. INSTALLING KC SERIES MODULES
KC series module may be installed in various applications
utilizing a variety of support structure options and
attachment methods. For optimal performance in all
applications, clearance between the module frame and the
mounting surface is required to allow cooler ambient air to
circulate around the back of the module.
BUILDING ATTACHED: The modules are commonly
supported parallel to the surface of the building wall or roof.
Clearance between the module frames and surface of the
wall or roof is required to prevent wiring damage and to
allow air to circulate behind the module. Do not fully
enclose the photovoltaic array, as solar modules perform
best when cool in temperature. If other mounting means are
MODULE
TILT ANGLE
FIXED TILT ANGLE
15
SAME AS LATITUDE
LATITUDE + 5
LATITUDE + 10
LATITUDE + 15
LATITUDE + 20
employed, this may affect the listing for Fire Class Ratings.
FREE STANDING: The supporting structure is used to
mount modules at correct tilt angles. The mounting design
may have an impact on the fire resistance.
KC series module may be attached to a support structure
by the following
methods:
STANDARD: Utilizing ¼" or 6mm stainless steel hardware
through the existing 0.28" diameter (7 mm) mounting holes
in the module frame and then through KC series module
mounting holes on the support structure. The stainless
steel hardware used for securing the module frame should
secure with an applied torque of 6 foot-pounds (8
Newton-meters). Refer to the Module Drawings for the
position of the solar module mounting holes.
CLAMPING: Top or bottom clamping methods certified by a
registered professional engineer, and in compliance with
local codes.
OTHER: Other method(s) certified by a registered
professional engineer, and in compliance with local codes.
7. MODULE WIRING
KC series modules come pre-wired and terminated ready
for most building attached or free standing installations.
Each module has two #10 AWG type USE-2/RHH/RHW-2
stranded sunlight resistant output cables each terminated
with Multi-Contact connectors. The positive (+) terminal
has a female connector while the negative (-) terminal has a
male connector. The module wiring is solely for series
connections
only,
i.e.
interconnections. Series and parallel connections shall be
made by use of two #10 AWG type XLP sunlight resistant
output cables with male and female Multi-Contact
connectors.
NOTE: When making connections with Multi-Contact
connectors, make sure the array is disabled. DO NOT
MAKE CONNECTIONS WHILE UNDER LOAD. Module
output connections are marked "Do not disconnect under
load".
NOTE: MAXIMUM SYSTEM VOLTAGE 600 VDC.
KC series modules and most PV system components have
a maximum system voltage rating of 600 volts DC. Some
grid-tie systems operate at or near this voltage rating. Like
other polycrystalline solar modules, the open circuit voltage
of the KC series module increases as the ambient
temperature decreases. Maximum System voltage is
computed as the sum of the open-circuit voltage of the
series-connected photovoltaic modules for the lowest
expected ambient temperature. Refer to the National
Electrical Code Article 690-7(a) for determining the
maximum number of KC series modules that can be placed
in series. Temperature coefficients, specific to the module
of use, can be used to provide the most accurate prediction
of module voltage under temperature extremes.
female
(+)
to
male
(-)
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