Sol-Reliant OG 300-2004008A, Installation, Operation And Maintenance Manual

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Wiring the pump: Part I
The 12-volt DC Laing pump has a manual “on/off” switch located on top of the grey junction
box mounted to the solar tank. Keep the pump switched “off” until wiring is complete.
The Sol-Reliant system comes with two MC (MultiContact
™
) Cables on the roof for quick
connecting and disconnecting of the solar module. Two more MC cables are wired onto the
module before shipping. The two MC cables are inserted through a weather head into a metallic
junction box in the attic. A 6AWG bare copper conductor need to be run from an earth ground to
the body of the PV module. This conductor is a lightning ground not an equipment ground.
STEP 1 (ATTIC): Install a 4 Square metallic junction box near the plumbing penetration.
Attach it to a convenient rafter or truss in the attic.
STEP 2 (ROOF/ATTIC) : Install the short length of EMT and the roof flashing. Connect the
EMT to the metallic junction box with 1/2” flex conduit.
STEP 3 (INSIDE) : Run a 6AWG bare, stranded copper wire from an earth ground to the
junction box in the attic. Leave at least 6 feet of excess. This wire will need to reach the body of
the PV module. Feed the 6AWG wire into the junction box, through the conduit and out to the
roof.
STEP 4 (INSIDE): Run 12/2 Metal Clad pre-wired flex conduit from the tank mounted junction
box to the metallic junction box in the attic. EMT or unwired flex can be run if desired.
STEP 5 (ROOF) : Feed the 6AWG wire through the weatherhead. Attach the weatherhead to the
EMT sticking through the roof flashing. Feed the MC cables into the weatherhead, through the
conduit to the metallic junction box in the attic.
STEP 6: (ATTIC) : Wire the MC Cables to the ends of the 12 AWG conductors inside the
junction box. Close the junction box.
Flushing and charging the solar loop
Flush the system to clear flux and other debris from the solar loop. First, remove the brass plug
on the collector that you installed to pressure test the system. Prepare to flush the solar loop by
attaching a washing machine hose from the hose bib at the bottom of the solar tank to the
Drain/Fill Valve on the solar loop (the two hose bibs are just a few inches apart. Open the valve
on the solar loop, then,
slowly open the valve on the tank and slowly fill the system. Continue to
fill until water overflows on the roof. Allow the flow for 10 minutes or more. Shut water
pressure off and drain into a 5-gallon bucket and note how much fluid the system takes. If the
pipe run is longer than 70 ‘ (one way) or pipe size greater than 3/4” is used, it would be advisable
to have a second bucket on hand. This will help you determine the amount of heat transfer fluid
necessary to charge the system. Fill and drain several times until water in solar loop is clear.
Drain the final flushing charge and prepare for the operational charge.