Specifications

System to operate off of the ship’s 24 volt DC battery system, with separate breakers on
the main panel. There shall be a charcoal water filter in the system to filter all domestic
water whether from tanks or shore hookup.
Plumbing
To be as called up in the General section and the Whale or SeaTech Quick Connect
system using 22mm OD pipe. Hot water pipes to be insulated.
Calorifier
One 76 liter hot water heater fitted under aft galley counter. To be provided with 220 volt
electric heating element and also fitted with a main engine jacket water heat exchanger.
Pressure relief valve to be plumbed into nearest bilge bay.
Water Maker
A reverse osmosis desalinator will be supplied.
Water supply for the desalinator is taken from the main salt water manifold. A fresh
water flush for the membranes will be provided.
Watermaker to be piped to fresh water manifold for distribution to water tanks.
Misc.
For connection to dockside pressure water, there shall be a fresh water shore
connection leading below deck to a pressure reducing valve, Sen-Dure or equal, 3 bar.
Connection shall be in the lazarette.
There shall be fresh water hose connections (cold only) inside the fore peak hatch and
inside the lazarette hatch, for fresh water wash down. These hose connections also
serve as the fire main by setting the three way valves. Hose connections shall be plastic
or stainless steel quick connect type with valves.
Items Required:
1 Primary Water Pump, Gianneschi & Ramacciotti Ecojet 1 (With Tank)(24 Volt).
1 Calorifier, Atwood Mod. EH20-220.
1 Desalinator, HEM Series 20/1200 with a capacity of 4500 liters/day.
9.6. Black Water System
Tanks
The two black water tanks of 100 litres each shall be of stainless steel as per plan. Each
tank shall have a 25mm (1") diameter vent that is led to the bootstripe via a loop. The
forward tank will be dedicated to the owners and crew heads and the aft tank will be
dedicated to the guest cabin heads.
Pumps
Each tank to have its own dedicated pump plumbed to a common manifold which then
discharges directly overboard below the waterline through vented loops or to a deck
plate for shore pump out through a Y-valve. The tanks shall be fitted with two diaphragm
actuated high and low level switches which will actuate indicator lights and an audio
alarm, (no automatic pump out). The pumps will be manually controlled.
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