PV-ezRack ComT 2.0: 5 Technical manual

Ver 3.0 / Last Updated - Apr. 2023
ComT 2.0: 5°, 10° and 15°
Code-Compliant Planning and Installation Guide V2.0
Complying with AS/NZS 1170.2:2021

Installation Guide / ComT 2.0: 5°, 10° and 15°
1Code-Compliant Planning and Installation Guide V2.0 - Complying with AS/NZS 1170.2:2021
Introduction
Using only PVezRack® parts and installer- supplied
parts as specified by PVezRack® project plan
(substitution of parts may void the warranty and
invalidate the letter of certification).
Recycling: Recycle according to the local relative
statute.
Removal: Reverse installation process.
Ensuring that there are no less than two professionals
working on panel installation.
Ensuring the installation of related electrical
equipment is performed by licenced electricians.
Ensuring safe installation of all electrical aspects of
the PV array, this includes adequate earth bonding of
the PV array and PVezRack® SolarRoof components
as required in AS/NZS 5033:2021.
Ensuring that the roof, its rafters/purlins, connections,
and other structural support members can support
the array under building live load conditions.
Ensuring that screws to fix interfaces have adequate
pull-out strength and shear capacities as installed.
Maintaining the waterproof integrity of the roof,
including the selection of appropriate flashing.
Verifying the compatibility of the installation
considering preventing electrochemical corrosion
between dissimilar metals. This may occur between
structures and the building and also between
structures, fasteners and PV modules, as detailed in
AS/NZS 5033:2021.
Verifying atmospheric corrosivity zone of installation
site by referring to AS 4312-2008 or consulting local
construction business to determine appropriate
products and installation.
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Complying with all applicable local or national
building codes, including any updates that may
supersede this manual.
Ensuring that PVezRack® and other products are
appropriate for the installation and the surrounding
environment.
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The installer is solely responsible for:
List of contents
Introduction
Planning
Tools & Components
System Overview
Installation Instruction
Certification
01
02
05
07
12
18
The PVezRack® ComT is developed for PV installation
on flat or pitched roofs. The unique fixing parts can be
quickly and easily installed with simple tools.
Please review this manual thoroughly before installing
PVezRack® ComT. This manual provides:
1) Supporting documentation for building permit
applications relating to PVezRack® ComT.
2) Planning and installation instructions.
The PVezRack® ComT parts, when installed
in accordance with this guide, will be structurally sound
and will meet the AS/NZS 1170.2:2021 standard. During
installation, and especially when working on the roof,
please comply with the appropriate Occupational
Health and Safety regulations. Please also pay attention
to any other relevant State or Federal regulations.
Please check that you are using the latest version of the
Installation Manual, which you can obtain by contacting
Clenergy Australia via email at [e-mail] or
contacting your local distributor in Australia.
- Introduction -
Product Warranty:
Please refer PVezRack® Product Warranty on our
website.

Installation Guide / ComT 2.0: 5°, 10° and 15°
2
Code-Compliant Planning and Installation Guide V2.0 - Complying with AS/NZS 1170.2:2021
Planning
Central Australia is now classified as Wind Region A0
and Terrain Classification 2 instead of Wind Region A4
Region A1, previously most of the South coast of
Australia, now is divided into Regions A1 and A5.
Tasmania is now Region A4.
Region B has been divided into regions B1 and B2.
This will affect installations in Northern NSW, Gold
Coast, Brisbane, Sunshine Coast, and Gladstone.
Region B1 was increased to include more inland cities
around Brisbane. This will likely mean extra structural
requirements such as extra rail for installs.
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Wind regions are pre-defined for the whole of Australia by the Australian Standard 1170.2:2021. Comparing to
1170.2:2011, 2021 version has a lot of changes in wind regions.
- Planning -
Determine the Wind Region of Installation Site
Wind Regions – Australia

Installation Guide / ComT 2.0: 5°, 10° and 15°
3Code-Compliant Planning and Installation Guide V2.0 - Complying with AS/NZS 1170.2:2021
Determine the Terrain Category
It requires to determine the right terrain category to ensure the installation meets the maximum interface spacing
specified in the engineering certificate.
In 1170.2-2021, Terrain category 1.5 was removed and Terrain category 2.5 was added. See the definitions below.
Terrain Category 1 (TC1) – Very exposed open terrain with very few or no obstructions,
and all water surfaces (e.g. flat, treeless, poorly grassed plains; open ocean, rivers, canals,
bays and lakes).
Terrain Category 2 (TC2) – Open terrain, including grassland, with well-scattered obstructions
having heights generally from 1.5 m to 5 m, with no more than two obstructions per hectare
(e.g. farmland and cleared subdivisions with isolated trees and uncut grass).
Terrain Category 2.5 (TC2.5) – Terrain with some trees or isolated obstructions, terrain in developing outer urban areas
with scattered houses, or larger acreage developments with more than two and less then 10 buildings per hectare.
Terrain Category 3 (TC3) – Terrain with numerous closely spaced obstructions having
heights generally from 3 m to 10 m. The minimum density of obstructions shall be at least the
equivalent of 10 house-size obstructions per hectare (e.g. suburban housing, light industrial
estates or dense forests).
Terrain Category 4 (TC4) – Terrain with numerous large, high (10 m to 30 m tall) and closely spaced constructions, such
as large city centres and well-developed industrial complexes.
If your installation site is not at TC 2, 2.5 or 3, please contact Clenergy to obtain a project specific
engineering certificate to support your installation.
Determine the Maximum Rail Support Spacing
Please refer to the Certification Letter and Interface Spacing Table. There are many factors affecting maximum interface
spacing, such as wind region, building height, panel size... There is one factor specially for ComT, which is row spacing
between panels. Please refer to note 22 to find out reduction and increase factors for different row spacing.
If a project specific Certification Letter has been provided, please refer to the support spacing in this letter.
- Planning -
Row spacing Spacing +/- (North facing) Spacing +/- (East-West)
0 mm to < 200 mm - 20 % - 20 %
< 200 to < 400 mm -10% -10%
< 400 mm to < 650 mm Apply the same table spacings Apply the same table spacings
> 650 mm +20% + 10 %

Installation Guide / ComT 2.0: 5°, 10° and 15°
4
Code-Compliant Planning and Installation Guide V2.0 - Complying with AS/NZS 1170.2:2021
- Planning -
Determine System Tilt Angle
The PVezRack® ComT system is a fixed 5°, 10° and 15° tilt system.
Determine Roof Pitch
The PVezRack® ComT system can be used for roof slopes up to 10°. Please verify that the Installation site roof pitch is
less or equal to 10°.
Determine the Installation Area of Roof
Please refer to PVezRack® ComT Interface Spacing Table in Certification Letter.
Verify Rafter/Purlin Properties of Building
Please verify the rafter/purlin properties of the building, which could affect the interface spacing. For example, the tin
interface spacing on the metal purlin in the certification letter is based on steel purlins G450 1.9 mm thick. If the steel
purlin is less than 1.9 mm in thickness, the corresponding reduction factor of the interface spacing will be applied. For
different grade of timber purlin, the different spacing will apply as well. Please refer to the generic notes for details.
Determine the Maximum Rail Support Spacing
There are other additional factors (such as PV module dimensions, number of rails per PV module, row spacing
between PV modules) related to maximum rail support spacing. Please refer to the notes of Certification Letter. If a
project specific Certification Letter has been provided, please refer to the support spacing in the provided letter.
Verify Maximum Rail Overhang
Maximum rail overhang is 150 mm for interface fixing (or installed) spacings equal or over 700 mm. For interface fixing
spacings less than 700 mm, max rail overhang is 50 mm.
Verify PV Module’s Clamping Requirements
It is important to check PV modules clamping requirements (for example clamp dimensions, clamping distance from
the end of panel) from PV modules manufacturer before installations, which can help to avoid using incorrect size of
clamps and help to plan interface’s positions on the roof and rail’s orientation and position.