Specifications

TM024 Premier Loline Solar Drain back Service Instructions REV: A
D.O.I: 12/12/2007
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18. Add water to top up the level of the closed circuit fluid in the heat exchanger if
required.
To add water to the closed circuit fluid:
• If not already removed, disconnect the drain line and remove the spring clip from
the solar circuit relief valve at the top of the solar storage tank and remove the
valve (refer to step 6).
Warning: The solar circuit may be under pressure. Take care when removing
the solar circuit relief valve, as a sudden discharge of pressurised hot vapour
may be experienced. This discharge will create a sharp sound of vapour
being released.
• Place a funnel in the relief valve fitting.
• Add water slowly through the funnel until the level of fluid in the hose is at the
desired level as marked on the solar storage tank.
Note: It may be necessary to undo the compression nut on the solar hot pipe at
the top of the solar storage tank and loosen the pipe work from the fitting to assist
the flow of water into the closed circuit through the funnel.
• Remove the funnel from the relief valve fitting.
• Position the solar hot pipe correctly in its fitting and tighten the compression nut if
this has been loosened.
19. Drain closed circuit fluid from the heat exchanger if required.
To drain closed circuit fluid:
• If not already removed, disconnect the drain line and remove the spring clip from
the solar circuit relief valve at the top of the solar storage tank and remove the
valve refer to step 6).
Warning: The solar circuit may be under pressure. Take care when removing
the solar circuit relief valve, as a sudden discharge of pressurised hot
vapour may be experienced. This discharge will create a sharp sound of
vapour being released.
• Place the end of the solar fluid hose into a graduated volumetric container and
drain closed circuit fluid until the level of fluid in the hose is at the desired level as
marked on the solar storage tank.
It may be necessary to drain off the closed circuit fluid in small amounts, raising
the hose back to the top of the solar storage tank and noting the level of the closed
circuit fluid in the clear hose each time, so as not to drain below the desired level.
Note: The closed circuit fluid contains food grade additives (rust inhibitor, anti-
freeze agent, colour) and is harmless to the environment. However, it is good
practice to recover any excess fluid and remove from site for appropriate disposal.
• Re-affix the hose to the same location on the side of the solar storage tank.
20. If water has been added to or closed circuit fluid has been drained from the heat
exchanger, recommence this procedure from step 10.