Installation manual
I
WATER
HEATER
WATER
HEATER
INSTALLATIONS
These engines
are
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
the 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.
Hoses should rise continuously
from
their low point
at
the
heater to
the
engine so that air will rise naturally from
the
heater to the engine.
If
trapped air
is
able
to
rise
to
the heater,
then an air bleed petcock must
be installed at the higher fitting
on
the heater for bleeding air while filling the system.
!HERMOSTAT
HOUSING
--
---
NOTE:
If
any portion
of
the heating circuit rises above the
engine~
own
pressure
cap,
then
a pressurized
(aluminum)
renwte 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 tanks location
and
the other back
to
the
engine~
return.
Install
the
remote expansion
tank
in
a
convenient 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 installed, 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 after 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
heaterto 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
pet~ock
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.
-OWNERS
HOT
WATER
HOSE
HOT
WATER
TANK.
WATER
HEATER
CONNECTIONS
,...
WESTERBEKE
Engines & Generators
44