{"id":15357,"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\/connecting-seawater-to-heat-exchanger\/"},"modified":"2025-06-17T18:07:45","modified_gmt":"2025-06-17T18:07:45","slug":"connecting-seawater-to-heat-exchanger","status":"publish","type":"page","link":"https:\/\/manuals.seakeeper.com\/seakeeper\/seakeeper-9-installation-manual\/cooling-installation\/connecting-seawater-to-heat-exchanger\/","title":{"rendered":"4.3 Connecting Seawater to Heat Exchanger"},"content":{"rendered":"\n

Refer to Figure 31 for typical Seakeeper<\/span> 9 seawater plumbing arrangement.<\/p>\n\n\n\n

    \n
  1. Connect seawater from installer-supplied pump to lower \u00be in. (19 mm) hose barb on heat exchanger. (See Figure 1) Use the same practices as other below waterline seawater plumbing. Required flow rate is 4 GPM (16 LPM) minimum and 8 GPM (30.3 LPM) maximum.<\/li>\n\n\n\n
  2. Connect seawater discharge (upper hose barb) to overboard drain. (See Figure 29) Use the same practices as other below waterline seawater plumbing.<\/li>\n\n\n\n
  3. In addition to initial operation at dock, new installations should be checked for minimum 4 GPM (16 LPM) flow while vessel is at speed and when backing down. If no other method of confirming flow is available, discharge line may be temporarily diverted to a bucket. Flow is calculated from time to fill a known volume. A self-priming seawater pump (customer\/installer supplied) may be required due to installation location to maintain water flow in all underway conditions where cavitation near the intake may occur and potentially cause an air-lock condition restricting seawater flow to the heat exchanger.<\/li>\n\n\n\n
  4. Inspect raw water plumbing after sea trial for any signs of leakage.<\/li>\n\n\n\n
  5. Heat exchanger contains removable endcaps to provide access for cleaning the tube bundle.<\/li>\n<\/ol>\n\n\n\n
    \"\"
    Figure 31 <\/strong>– Seakeeper<\/span> 9 Typical Plumbing Arrangement<\/em><\/figcaption><\/figure>\n\n\n\n

    Seakeeper<\/span> Optional DC Seawater Pump (P\/N 30331)<\/h3>\n\n\n\n
      \n
    1. Seakeeper<\/span><\/span> offers a self-priming DC Seawater pump operated at 24 VDC for the Seakeeper<\/span><\/span> 9 (Figure 32).<\/li>\n\n\n\n
    2. The pump assembly is pre-wired for connection to Seakeeper<\/span><\/span> 9 Seawater Pump Output Cable, “SW Pump Output” and includes a seawater strainer and various fittings. The pump specifications are as follows:<\/li>\n<\/ol>\n\n\n\n

      NOTE: Only use SeaFlo\u00ae<\/sup>-provided threaded fittings with DC Seawater Pump 30331.<\/strong><\/p>\n\n\n\n

      Volts<\/td>24 VDC<\/td><\/tr>
      Rated Flow<\/td>5.5 GPM (nominal)<\/td><\/tr>
      Overcurrent Protection Rating<\/td>15 A<\/td><\/tr>
      Ignition Protection<\/td>ISO 8846 or equivalent<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
      \n
      \"\"
      Figure 32 <\/em><\/strong>– Seakeeper<\/span> 9 DC Seawater Pump<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

      <\/p>\n","protected":false},"excerpt":{"rendered":"

      Refer to Figure 31 for typical Seakeeper 9 seawater plumbing arrangement. Seakeeper Optional DC Seawater Pump (P\/N 30331) NOTE: Only use SeaFlo\u00ae-provided threaded fittings with DC Seawater Pump 30331. Volts 24 VDC Rated Flow 5.5 GPM (nominal) Overcurrent Protection Rating 15 A Ignition Protection ISO 8846 or equivalent<\/p>\n","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-15357","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\/15357","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=15357"}],"version-history":[{"count":5,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15357\/revisions"}],"predecessor-version":[{"id":20188,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/pages\/15357\/revisions\/20188"}],"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=15357"}],"wp:term":[{"taxonomy":"manual","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/manual?post=15357"},{"taxonomy":"model","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/model?post=15357"},{"taxonomy":"document_type","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/document_type?post=15357"},{"taxonomy":"hidden","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/seakeeper\/wp-json\/wp\/v2\/hidden?post=15357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}