Connecting Seawater to Heat Exchanger

Connect seawater from installer supplied pump to ¾ in. (19 mm) hose barb on heat exchanger. Use the same practices as typical below waterline seawater plumbing. Required flow rate is 4 GPM (15.1 LPM) minimum and 8 GPM (30.3 LPM) maximum.
Connect seawater return to overboard drain. Use the same practices as typical below waterline seawater plumbing.
In addition to initial operation at dock, new Seakeeper installations should be checked with a flow meter for minimum 4 GPM (15.1 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 sea water 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.
1. To prevent cavitation / aeration of the seawater intake a forward-facing scoop should be utilized. In addition, the seawater intake should be located in a location that will not aerate during normal underway operation.
Inspect raw water plumbing after sea trial for any signs of leakage.
Heat exchanger contains removable endcaps to provide access for cleaning the tube bundle.

Adding Coolant

Start Up Introduction