Invest ISP 2.0, Installation Manual

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The 16 holes (φ9) above are prepared for fixing the collector
The introduction of the relevant heat conducting media of the plate heat collecting system
Heat exchange medium for solar heating system The indirect circulation system must use heat
exchange medium to avoid frozen if installed in area with icing weather. propylene glycol is
recommended to be used as the antifreeze liquid ; The indirect circulation system installed in area without
icing weather can use water (mix with slow release and anti-bubbling agent )as heat exchange medium
but should notice the sediment problem. The indirect system is not recommended to be used by the
collector.The table below contains the valves of the freeze points of the propylene glycol antifreezes
which concentrations are different. The concentration of the propylene glycol antifreeze to be filled in
depends on the lowest temperatur e of the application area. (for your reference only
）
II. Heat exchange medium for solar heating system
Note: a collector need at least 2 person to handle.
5. Transportation and handling
4