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INSTALLATION - ROOFTOP ISOLATOR
When installing the rooftop DC isolator, a Solahart Rooftop Isolator Subassembly must be used and must be
mounted to the rail by following the steps below. To help prevent UV degradation, the Rooftop Isolator
Subassembly should be mounted as far from the north side of the array as possible.
When installing the rooftop isolator the following points should be observed:
•
Ensure the IP rating of the isolator enclosure is maintained and that no moisture can enter. The conduit
entry points must be on the lower end of the enclosure (i.e.: facing downwards) so that any water will run
away from and not towards enclosure entry points. Screw cover caps must be installed and all mounting
holes should be sealed with silicone to help prevent water ingress.
•
Cable glands and conduit adapters must be chosen to suit the type of cable or conduit used. E.g. cable
glands designed for figure-8 cables must be chosen where figure-8 type solar DC cables are utilised.
•
Any conduit adapters should be installed so that the conduit slopes downwards from the enclosure to
prevent water ingress in adverse weather conditions.
•
If water and/or condensation can form in the isolator enclosure, provision must be made for its harmless
escape through suitably located drainage points in accordance with AS/NZS 3000 Clause 3.3.2.3.
Conduit entering the isolator enclosure must have a drainage hole installed at the lowest point to
facilitate the escape of any moisture.
Note:
Install Rooftop Isolator Subassembly before installing any PV modules.
1. Determine
where
the
Rooftop
Isolator
Subassembly is to be attached.
a. The Rooftop Isolator Subassembly is
configured for installation on the array as
shown above.
b. If the Subassembly is to be fitted in the other
orientation, move the cover (with the Solahart
logo) from position A to position B as shown
above.
c. If in doubt, slide the subassembly into the rail at
the point of attachment (see Step 4) and check
whether the Solahart logo is facing up.
2. Identify the earth connection point on the
bracket, as shown above.
3. Connect the earthing wire to the connection
point, as shown above, using a tightening torque
of 5 Nm.
4. Slide the subassembly into the rail making sure
that the Solahart logo is facing up (see Step 1)
5. Tighten both M8 bolts to 15 Nm, ensuring good
connection between the bolts and rail.
