DPA Solar - Roof Mount Installation Guide V1.5b
DPA Solar Racking Solutions
Roof Mount Installation Guide V1.5b
Roof Mount Installation Guide
V 1.5b
Contents Introduction .................................................................................................................................... 3 Planning .......................................................................................................................................... 4 Installation Steps .......................................................................................................................... 10 1. 2a. 2b. 3. 4.
Planning / Layout ........................................................................................................................................ 10 Tile Roof Installation ................................................................................................................................... 11 Tin Roof Installation ................................................................................................................................... 12 Install Rails / Splices ................................................................................................................................... 13 Install Panels ............................................................................................................................................... 14
Grounding & Cable Clips ............................................................................................................... 15
Page 2 of 16
Roof Mount Installation Guide
V 1.5b
Introduction DPA Solar racking when installed in accordance with this guide and applicable building regulations will be structurally adequate and meet the requirements of AS/NZS1170.
It is important to note that the installer is responsible for the following: •
Complying with all applicable local or national building codes, including any that may supersede this manual;
•
Complying with all electrical, health and safety and other applicable regulations as applicable to the location;
•
Ensuring that DPA Solar racking and other products are appropriate for the particular installation and the installation environment;
•
Ensuring that the roof, its rafters, connections, and other structural support members can support the array under building live load conditions;
•
Ensuring that all screws and fixings have adequate pullout strength and shear capacities as installed and are installed in accordance with applicable standards;
•
Ensuring that loads other than wind are considered in the design. This document addresses only wind loads on the assumption that wind produces the maximum load factor affecting an installation. Verify that other local factors, such as snow loads and earth quake effects, do not exceed the wind loads.
•
Maintaining the waterproof integrity of the roof, including selection of appropriate flashing;
•
Fitting galvanic isolation where required to protect against dissimilar metals corrosion; and
•
Ensuring safe installation of all electrical aspects of the PV array.
This product is Warranted to be free from defective material and workmanship for a period of 10 years. Please contact DPA Solar for full warranty details.
Page 3 of 16
Roof Mount Installation Guide
V 1.5b
Planning Wind regions as defined by Australian Standard 1170 are as follows and illustrated in Figure A: •
Most of Australia is designated Region A which indicates a Regional Ultimate Basic Wind Velocity of 45m/sec.
•
Some areas are designated Region B (57m/sec). Local authorities will advise if this applies in your area.
•
Region C areas (66m/sec) are generally referred to as Cyclonic and are generally limited to northern coastal areas. Most Region C zones end 100km inland.
•
Region D (80m/sec) Australia's worst Cyclonic Region between Carnarvon and Pardoo in Western Australia.
This document applies to installations in regions A, B & C (wind classifications C1 – C3) at roof heights of up to 10m (three storeys). Region D sites require individual analysis and design.
Figure A: Wind Regions
Page 4 of 16
Roof Mount Installation Guide
V 1.5b
Terrain Categories are defined by Australian Standard 1170 into Categories 1, 2, 3 and 4. Category 1, is the most exposed, associated with large open areas, such as airports or large fields. Category 4, is the most protected, associated with High density metropolitan, city buildings. This installation guide is applicable to Terrain Categories as low as 2.5, hence no greater exposure than the following scenarios, are allowed: •
Level wooded country / forests
•
Centres of small towns, suburban areas
•
High density metropolitan, city buildings
The wind force on the roof is dependant on the height of the roof. This factor is Mz,cat, as defined by AS1170. To simplify different roof heights, single storey (height
Roof Mount Installation Guide V1.5b
Roof Mount Installation Guide
V 1.5b
Contents Introduction .................................................................................................................................... 3 Planning .......................................................................................................................................... 4 Installation Steps .......................................................................................................................... 10 1. 2a. 2b. 3. 4.
Planning / Layout ........................................................................................................................................ 10 Tile Roof Installation ................................................................................................................................... 11 Tin Roof Installation ................................................................................................................................... 12 Install Rails / Splices ................................................................................................................................... 13 Install Panels ............................................................................................................................................... 14
Grounding & Cable Clips ............................................................................................................... 15
Page 2 of 16
Roof Mount Installation Guide
V 1.5b
Introduction DPA Solar racking when installed in accordance with this guide and applicable building regulations will be structurally adequate and meet the requirements of AS/NZS1170.
It is important to note that the installer is responsible for the following: •
Complying with all applicable local or national building codes, including any that may supersede this manual;
•
Complying with all electrical, health and safety and other applicable regulations as applicable to the location;
•
Ensuring that DPA Solar racking and other products are appropriate for the particular installation and the installation environment;
•
Ensuring that the roof, its rafters, connections, and other structural support members can support the array under building live load conditions;
•
Ensuring that all screws and fixings have adequate pullout strength and shear capacities as installed and are installed in accordance with applicable standards;
•
Ensuring that loads other than wind are considered in the design. This document addresses only wind loads on the assumption that wind produces the maximum load factor affecting an installation. Verify that other local factors, such as snow loads and earth quake effects, do not exceed the wind loads.
•
Maintaining the waterproof integrity of the roof, including selection of appropriate flashing;
•
Fitting galvanic isolation where required to protect against dissimilar metals corrosion; and
•
Ensuring safe installation of all electrical aspects of the PV array.
This product is Warranted to be free from defective material and workmanship for a period of 10 years. Please contact DPA Solar for full warranty details.
Page 3 of 16
Roof Mount Installation Guide
V 1.5b
Planning Wind regions as defined by Australian Standard 1170 are as follows and illustrated in Figure A: •
Most of Australia is designated Region A which indicates a Regional Ultimate Basic Wind Velocity of 45m/sec.
•
Some areas are designated Region B (57m/sec). Local authorities will advise if this applies in your area.
•
Region C areas (66m/sec) are generally referred to as Cyclonic and are generally limited to northern coastal areas. Most Region C zones end 100km inland.
•
Region D (80m/sec) Australia's worst Cyclonic Region between Carnarvon and Pardoo in Western Australia.
This document applies to installations in regions A, B & C (wind classifications C1 – C3) at roof heights of up to 10m (three storeys). Region D sites require individual analysis and design.
Figure A: Wind Regions
Page 4 of 16
Roof Mount Installation Guide
V 1.5b
Terrain Categories are defined by Australian Standard 1170 into Categories 1, 2, 3 and 4. Category 1, is the most exposed, associated with large open areas, such as airports or large fields. Category 4, is the most protected, associated with High density metropolitan, city buildings. This installation guide is applicable to Terrain Categories as low as 2.5, hence no greater exposure than the following scenarios, are allowed: •
Level wooded country / forests
•
Centres of small towns, suburban areas
•
High density metropolitan, city buildings
The wind force on the roof is dependant on the height of the roof. This factor is Mz,cat, as defined by AS1170. To simplify different roof heights, single storey (height
