Installation manual
WATER
HEAlER,
(0\fVNERS
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 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
tra
.
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THESE
HOSES
ARE
CONNECTED
IF
THERE
IS
NO
WATER
HEATER.
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WATER
HEATER
BELOW
ENGINE
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
h~ter,
then
an
air bleed petcbck must be installed at the higher
fit-
ting
on
the heater for bleeding air while filling the system.
NOTE:
If
any portion
of
the
heating circuit rises above
the
engines
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
tanks location and
the
other back
to
the
engines
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
plizstic
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
aft~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
engines
heat
exchanger.
Open
this
petcock when filling
the
engines
coolant system
to
allow air
in
the
exchanger
to
escape.
Close
tightly after all
the
air
is
removed
Engines & Generators
55