4
Clearance between the roof surface and
module frame is required to allow cooling
air to circulate around the back of the
module. This also allows any condensation
or moisture to dissipate. The required
clearance between the roof surface and the
module is more than 4 inch.
Panasonic recommends the installation
method and mounting profile shown in
Figure 1
A module should be attached on a mount
or support structure rail by corrosive-
resistant metal clamps.
The clamps should be made of aluminum
alloy or other material that will reasonably
protect against a risk of electrolytic
corrosion.
The module was tested using Unirac or
IronRidge clamps with the specifications see
figure 1 and below;
1)
Unirac clamps:
Provider: Unirac, Inc.
Product Line: SolarMount
Clamps type: Top Mounting Clamps
(Mid clamp and End clamp)
Unirac Part No. 302022C, 302022D,
302027C, 302027D
Width: Mid clamp; 1.5”(38 mm), End
clamp; 1.9”(48 mm)
Thickness:
Mid
clamp;
Nominal
thickness 0.075”(1.9mm), End clamp;
Nominal thickness 0.125”(3.17mm)
Torque: 13.6 N.m(10 ft-lbs).
Material: Mid clamp; 300 Stainless
steel, End clamp; 6000 Aluminum
alloys
Note: Please refer to Unirac manual,
for installation method.
2)
IronRidge clamps:
Provider: IronRidge Inc.
Product Line: RoofMount
Clamps type: Top Mounting Clamps
(Grounding mid clamp and End clamp)
IronRidge Part No. RS-GD-MCL-225,
RS-GD-MCL-225B,
29-7000-224,
29-7000-224B
Width:
Grounding
mid
clamp;
1.16”(29.5 mm), End clamp; 1.5”(38
mm)
Thickness: Grounding mid clamp;
Nominal thickness 0.11”(2.85mm), End
clamp;
Nominal
thickness
0.125”(3.17mm)
Torque: 9.5 N.m (85 in-lbs).
Material: Grounding mid clamp; 304
Stainless steel, End clamp; 5000 &
6000 Aluminum alloys
Note: Please refer to IronRidge manual,
for installation method.
Installation (reference)
Solar Module
Mid Clamp
(2 places)
End Clamp
(2 places)
Mounting
Structure Rail
Mid Clamp
Solar Module
End Clamp
Mounting Structure Rail
Figure 1. Installation
<Unirac clamps>
Mid clamp
End clamp
Grounding Mid clamp
End clamp
<Ironridge clamps>
