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Chapter 4
Typical Hot Water Heater
Your yacht offers a hot water heater which is controlled
by the generator at sea or shore power while at dockside.
Like home water heaters the unit uses a T and P valve
which protects the hot water tank from excessive pressure
due to the water overheating. Should this occur the valve
would open and direct steam, etc. to the bilge.
Also, there is a one-way valve that keeps the hot water from
back fl ushing into the cold water supply. The hot water
heater incorporates a drain valve to purge the system of
mineral deposits. A reset button is found at the aft end
of the component.
Typical Shower Sump Pump System
Your yacht features master and guest room showers. The
head/shower water supply is controlled by the water
system manifold.
As part of the drainage system a self-contained shower
sump pump collects all water and debris. After the water
reaches a predetermined level the fl oat switch permits
the pump to send the used shower water to an overboard
thru-hull fi tting.
After showering, always let about one gallon of water
settle through the shower drain to help rid the shower,
drain, lines, and shower sump pump of debris, hair, and
mineral deposits.
TYPICAL SHOWER SUMP PUMP
INPUT
OUTPUT
VENT
FLOAT/
PUMP
REMOVABLE LID
CHECK FOR
DEBRIS
Refer to the sump shower hose identifi cation diagram for
specifi c hose routes found earlier in the air conditioner
section.
TO PREVENT HOT WATER HEATER DAMAGE!
NEVER ACTIVATE THE BREAKER
WHEN THE HOT WATER HEATER
IS NOT COMPLETELY FULL OR
THE ELEMENT WILL BE DAMAGED!
T&P VALVE
COLD WATER IN
HOT WATER OUT
HOT WATER HEATER
DRAIN VALVE
RESETTABLE
BREAKER
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