{"id":20790,"date":"2025-11-12T19:20:32","date_gmt":"2025-11-12T19:20:32","guid":{"rendered":"https:\/\/manuals.seakeeper.com\/seakeeper\/seakeeper-14-installation-manual-90873-1-copy\/cooling-installation\/precautions\/"},"modified":"2026-01-06T17:59:35","modified_gmt":"2026-01-06T17:59:35","slug":"precautions","status":"publish","type":"page","link":"https:\/\/manuals.seakeeper.com\/seakeeper\/seakeeper-14-installation-manual-90873-2\/cooling-installation\/precautions\/","title":{"rendered":"4.2 Cooling System Considerations"},"content":{"rendered":"\n
    \n
  1. Installer is responsible for supplying a dedicated seawater 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\/N 30322.<\/li>\n\n\n\n
  2. Unintended seawater flow from the seawater pick-up during the vessel’s underway operation is unacceptable<\/strong> and may cause stress to internal components<\/strong>. Unintended flow should be mitigated through pump selection, using a diaphragm-style pump or an inlet control valve. Continuous cooling flow from shared through-hull plumbing, a centralized chiller, or a cooling system is unacceptable for on-demand Seakeeper<\/span><\/span> models.<\/li>\n\n\n\n
  3. The seawater pump is powered by the 14 AWG cable, via \u201cSW Pump VDC Out\u201d on the Seakeeper<\/span><\/span> 14, as outlined in Electrical Installation Section 3.2.
    \n
      \n
    • This pump must operate on 24 VDC, 10 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> unit onboard the vessel to ensure sufficient seawater flow to each unit.<\/li>\n\n\n\n
    • It is recommended that the seawater pump is located below the waterline, as close to the baseline of the vessel 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 is recommended 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
    • Install electric ball valve (P\/N 20762) and two 1 in. – 3\/4 in. threaded fittings of Kit 90971 in suction line of pump between the strainer and the seacock valve and within 40 in. (1 m) of seawater pump.<\/li>\n<\/ol>\n\n\n
      \n
      \"\"
      Figure 24 – <\/em><\/strong>Branch Seawater Pump Output & Valve Kit (P\/N 90971<\/em><\/em>)<\/figcaption><\/figure>\n<\/div>\n\n\n
        \n
      1. Vented loops are optional and should be considered only with centrifugal-style pumps. Self-priming or positive displacement style pumps do not require a vented loop; this includes Seakeeper<\/span><\/span> P\/N 30322.<\/li>\n\n\n\n
      2. Maximum seawater pressure in heat exchanger is 20 psi (1.4 bar)<\/li>\n\n\n\n
      3. Seawater flow requirement through heat exchanger is 4.5 GPM (17 LPM) minimum and 6 GPM (22.7 LPM) maximum under all operating conditions of the boat. <\/strong>When sizing seawater pump, installer should factor in losses for raw water plumbing. In addition to initial operation at dock, new Seakeeper<\/span><\/span> installations should be checked to be within the flow requirements while vessel is at speed. Flows higher than 6 GPM (22.7 LPM) could affect heat exchanger life.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":9,"featured_media":0,"parent":20786,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"manual":[367],"model":[],"document_type":[],"hidden":[],"class_list":["post-20790","page","type-page","status-publish","hentry","manual-seakeeper-14-installation-manual-90873-2"],"acf":[],"_links":{"self":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/20790","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=20790"}],"version-history":[{"count":7,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/20790\/revisions"}],"predecessor-version":[{"id":21216,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/20790\/revisions\/21216"}],"up":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/20786"}],"wp:attachment":[{"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/media?parent=20790"}],"wp:term":[{"taxonomy":"manual","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/manual?post=20790"},{"taxonomy":"model","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/model?post=20790"},{"taxonomy":"document_type","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/document_type?post=20790"},{"taxonomy":"hidden","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/hidden?post=20790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}