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Refer to Figure 17 for pressure drop figures with a 40% propylene glycol solution. When using distilled
water as heat transfer fluid, there is a further 20% reduction in pressure drop.
Figure 17 – Pressure Drop through HP-30SC with 40% Propylene Glycol Solution
After determining gpm flow rate and total system head loss, a properly sized pump can be chosen. See
recommendation from pump supplier to determine the proper pump for your job. Incorrect pump size will
reduce or fail to deliver solar contribution.
To further increase solar production, use a variable speed solar pump controller (p/n 8600-047).
Summary of Contents for HP-30SC
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