Water Heater (Optional) - Westerbeke 10.0 EGTD Operator's Manual

WATER:HEAlER,;(QV\(N_ERS
OPTION))
INSTALLATION .INSTRUCTIONS
INSTALLATION
This engine is equipped with connections for the plumbing of
engine coolant to transfer heat to an on-board water heater.
The water heater should be mounted in a convenient location
either in a high or low position in relation to
th~
engine, so
that the connecting hoses from the heater to the engine can
run in a reasonably direct line without any loops which might
trap
air.
WATER HEATER
BELOW ENGINE
Hoses should rise continuously from their low point at the
healer
to
the engine so that air will rise naturally from the
heater
to
the engine. If trapped air is able to rise to the
~r.
then an air bleed petcock must be installed
at
the higher fit-
ting on the heater for bleeding air while filling the system.
NOTE: If
arry
portion of
the
heating circuit rises above the
engine's own pressure cap, then a pressurized (aluminum)
remote expansion tank (Kit#024177) must be installed in the
circuit to become the highest point. Tee the remote expansion
tank into the heater circuit, choosing
the
higher of the two
connections for the return. Tee at the heater,
and plumb a
single line up to the tank's location and the other back to the
engine's return. Install
the
remote expansion tank in a conve-
nient location so the coolant level can easily be checked. The
remote expansion tank will now serve as a check and system
fill point.
The
plastic coolant recovery
tank is
not used when
the remote expansion tank kit is insflllkd, since this
tank
serves
the
same
function.
Remove and store the plastic
recovery tank
if
it has been already installed.
The pressure cap on the engine's manifold should be
installed
a&.r
the engine's cooling system is filled with
coolant Finish filling the cooling system from the remote
tank
after the system is filled and is free of air and exhibits'
good coolant circulation. During engine operation, checking
the engine's coolant should be done at the remote tank and
not at the engine manifold cap. The hose connection from the
heater
to
the remote expansion tank should be routed and
supported so it rises continuously from the heater
to
the tank,
enabling any air in the system to rise up to the tank and out
of the system.
NOTE: An air bleed petcock
is
located on
the
engine's
heat exchanger. Open this petcock when filling
the
engine's
coolant system to allow air in the exchanger to escape.
Close tightly after all the air
is
removed.
1-w'IWESIERBEKE
f
t:ngjnes & Gen!!rators
49