{"id":15355,"date":"2023-05-22T10:39:49","date_gmt":"2023-05-22T10:39:49","guid":{"rendered":"https:\/\/manuals.seakeeper.com\/seakeeper\/seakeeper-9-installation-manual-90222-10-copy\/cooling-installation\/precautions\/"},"modified":"2025-06-17T18:05:27","modified_gmt":"2025-06-17T18:05:27","slug":"precautions","status":"publish","type":"page","link":"https:\/\/manuals.seakeeper.com\/seakeeper\/seakeeper-9-installation-manual\/cooling-installation\/precautions\/","title":{"rendered":"4.2 Cooling System Considerations"},"content":{"rendered":"\n
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  1. The installer is responsible for supplying a dedicated positive-displacement seawater pump (or electric isolation valve and centrifugal pump) and associated plumbing. Seawater connections on the Seakeeper<\/span><\/span> heat exchanger mate with \u00be in. (19 mm) hose. An optional seawater pump can be purchased through Seakeeper<\/span><\/span>, P\/N30331.<\/li>\n\n\n\n
  2. The seawater pump is powered by “Cable 5″DC Seawater Pump Out” cable on the Seakeeper<\/span><\/span> 9, as outlined in Electrical Installation Section.
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    • This pump must operate on 24 VDC, 10 A OR<\/strong> 12 VDC, 15 A power. Pumps requiring other voltages or higher current can still be controlled by using this supply to trigger an installer-supplied relay but a separate source of power must be provided.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • A dedicated through-hull fitting should be installed for each Seakeeper<\/span><\/span> to ensure sufficient seawater flow to that unit onboard the vessel.<\/li>\n\n\n\n
    • It is recommended that the seawater pump is located below the waterline, as close to the vessel’s baseline as practically possible, to maintain positive inlet pressure on the pump in all operating conditions.<\/li>\n\n\n\n
    • A self-priming seawater pump may be required to maintain water flow in all underway conditions. Cavitation can occur at the seawater inlet and potentially cause an air-lock condition restricting seawater flow to the heat exchanger.<\/li>\n\n\n\n
    • Vented loops are optional and should only be considered with centrifugal style pumps. Self-priming or positive displacement style pumps do not require a vented loop, this includes Seakeeper<\/span><\/span> P\/N 30331.<\/li>\n\n\n\n
    • Maximum seawater pressure in heat exchanger is 20 psi <\/strong>(1.4 bar<\/strong>)<\/li>\n\n\n\n
    • Seawater flow requirement through heat exchanger is 4 GPM (15.1 LPM) minimum and 8 GPM (30.3 LPM) maximum under all operating conditions of the boat. <\/strong>When sizing the seawater pump, the installer should factor in losses for raw water plumbing. In addition to initial operation at the dock, new Seakeeper<\/span><\/span> installations should be checked to be within the flow requirements while the vessel is at speed. Flows higher than 8 GPM (30.3 LPM) could affect heat exchanger life.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":9,"featured_media":0,"parent":15351,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"manual":[307],"model":[],"document_type":[],"hidden":[],"class_list":["post-15355","page","type-page","status-publish","hentry","manual-seakeeper-9-installation-manual"],"acf":[],"_links":{"self":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15355","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/comments?post=15355"}],"version-history":[{"count":3,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15355\/revisions"}],"predecessor-version":[{"id":20186,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15355\/revisions\/20186"}],"up":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15351"}],"wp:attachment":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/media?parent=15355"}],"wp:term":[{"taxonomy":"manual","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/manual?post=15355"},{"taxonomy":"model","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/model?post=15355"},{"taxonomy":"document_type","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/document_type?post=15355"},{"taxonomy":"hidden","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/hidden?post=15355"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}