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SERVICE BULLETIN
DATE:
May 6, 1982
BULLETIN NUMBER: 114
MODEL:
All Mar ine Engines
SUBJECT:
Domestic Water Heater Installation
Using Westerbeke FLOWCONTROLLER
Principle: There are two 7/8" hose connections at the end of the manifold
which provide a
parallel flow of engine cooling water
to and
from
the
heater.
These connections are part of the FLOWCONTROLLER which assures a
flow
of
hot
water
through
the
heater
at
all
times
and
yet
precludes
excessive restriction of engine cooling water flow caused by the heater -
all simply and automatically.
Installation:
Remove the returnbend which normally connects the 7/8" hose
spuds on engines as shipped from the factory.
Connect these spuds to the
heater with 7/8" ID wire inserted hose.
The spud marked "out" indicates
the flow from the engine and the spud marked "in" indicates the flow retur-
ning to the engine.
Hoses should rise continuously from their low point at the heater and to
the engine so that trapped air will rise naturally from the heater to the
engine.
If trapped air can rise to the heater, then an air bleed petcock
~ust
be installed at the higher fitting at the heater for bleeding the air
Nhile filling the system.
Avoid loops in hose runs which will trap air.
If any portion of the engine cooling water circuit to or from the heater
rises
above
the engine's own pressure cap,
then
the pressurized
remote
expansion tank must be installed in the circui t
to be the highest point.
The tank kit Part Number is 24177.
Install the remote expansion tank in a
convenient location such as a sail locker for ease of checking fresh water
coolant level.
The cap on the engine mounted expansion tank/manifold should not be opened
once the system is installed and filled.
The hose connection from the heater to the remote expansion tank should be
routed and supported so as to rise continuously from the heater to the tank
enabling any air in the system to rise.
FLOWCONTROLLER kits are available for retro-fit to late 1980, 1981 and 1982
Westerbeke mar ine
eng ines which employ the
"two-pass"
exhaust mani fold.
The kit numbers are:
PIN:
Kit #32276 for engines whose exhaust manifold is on the left side of
the cylinder head (W21, RD60, W27, RD80, W33).
Kit
#32274
for
W13
and
Kit
#32275
for
W52
and
W58
engines
whose
exhaust manifold is on the right side of the cylinder head.
J.
H. WESTERBEKE CORP.
AVON INDUSTRIAL PARK, AVON, MASS. 02322
'/6'7}
588-7700
CABLE: WESTCORP, AVON· TELEX: 112 -4444
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