Specifications

INSTALLATION PROCEDURES
Seawater and Freshwater Supply
Seawater supply hose must be a minimum of
5
/8" ID and must not be obstructed by
undersized sea water strainers, fittings, or sea cock valves. We recommend seawater hose
and fittings be a minimum of
3
/4". The larger the sea strainer, the better. Do not share the
seawater inlet with the main engine through-hull unless a sea chest is available.
If your system is fitted with a watermaker, ensure that the seawater intake is located
forward of the head discharge or any other discharge that could foul your watermaker’s
supply source.
If the unit is installed below the waterline, a vented loop is required. The seawater supply
line feeding raw cooling water into the system must be routed to prevent siphoning of raw
water through this line into the exhaust system, filling the muffler and engine cylinders.
This line should be routed at least 12 inches above the waterline and an anti-siphon break
installed the top of its loop. This loop should be high enough above the waterline to ensure
that it remains dry even while heeling.
A small freshwater supply tank (expansion tank), bracket, and 10' of
3
/8" clear hose are
supplied with the unit and should be mounted level with the genset’s heat exchanger.
Exhaust System
Engine exhaust elbow is 1
3
/4”. Exhaust line installations will vary considerably and each
must be designed for the particular installation. The prime requirement is to provide an
outlet line with a minimum of restrictions, situated in a manner that ensures seawater,
rainwater and condensation cannot get back into the cylinders of the engine. Most exhaust
systems today use a water lift muffler such as the Vernay or Vetus type.
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