Connecting Seawater to Heat Exchanger

Connect seawater from installer-supplied pump to lower 1 in. (25.4 mm) hose barb on heat exchanger. Use the same practices as other below waterline seawater plumbing. Required flow rate is 10 GPM (38 LPM) minimum and 14 GPM (53 LPM) maximum.
Connect seawater discharge (upper hose barb) to overboard drain. Use the same practices as typical below waterline seawater plumbing.
In addition to initial operation at dock, new installations should be checked with a flow meter for minimum 10 GPM (38 LPM) flow under all normal operating conditions. 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.
Inspect raw water plumbing after sea trial for any signs of leakage.
Heat exchanger contains removable end-caps to provide access for cleaning the tube bundle.

Adding Coolant

Start Up Introduction