Output
lead
Markings: Generators are marked
Tl,
T2, etc.
These
identifying marks also appear
on
the wiring diagram.
Voltoge
Selection
on
Reconnectible
Single
Phase
Genera-
tors:
These
models are reconnectible
for
use
as
a 120/240
volt 3 wire; a 120volt 2 wire
or
240volt 2 wire power source
(Figure 12).
load
Connections:
Refer to the figure which illustrates
the load connections
for
the output shown
on
your
set's
nameplate.
Delia
Generator:.
Generator lead To
is
the
generator center
tap between
11
and
T2.
The
To lead
is
normally not
grounded but can be grounded
if
required (Figure 12-B).
Single phase
power
at center tapped leg available up to
2/3
of full rated three phase power.
!-IEAT
EXCHANGER
COOlIMG.(Optional).
This
is
a closed Cooling system
commonly
referred to
as
fresh water cooling.
Water
circulated through the engine
is
termed fresh water, hot water, jacketed water, etc.
Water
circula.ted through the heat exchanger only
is
called raw
water,
sea
water, cold water, discharged water, etc.
This
system (with anti-freeze
roolant)is
recommended where
freezing hazards exi
st
or where the owner wants
to
prevent
salt
water problems.
Two
conditions prevail: (1) Factory installed heat exchanger,
and (2) Customer installed
Dnan
heat exchanger kit. Get
details
from
Dnan.
.1
~
Do
not
use
existing neoprene
impeller·
~
water pump
for
hot water side
of
cooling
system. Heat or soluble
oil
(in many rust inhibitors and
~
anti-freezes) will damage the impeller. Always .connect
the
neopfene
impeller pump
to
the cold water side. Use
a centrifugal metal impeller water
pump
(Onan
#132-0110
or
equal)
in
the hot water side. Drive
it
with a belt
from
the
set's
power
talc
e-off.
Spec A through C: Use an expansion tank
in
the hot water
side.
Discharged water leaves at heat exchanger and then to
exhaust system water inlet.
Supply line connections are
the same
as
standard system (Figure 13). Refer to the
instructions
for
water supply line in
this
section.
Fill
closed cooling systems with clean, alkali-free water,
to the proper level.
.Add
an approved rust inhibitor to the
coolant.
If
the coolant
is
anti-frt;eze,
test
it periodically.
Install a
new
zinc
"penc
il"
(Figure
13)
which
screws into
fresh water outlet end of heat exchanger, 'every two
montEs
or
as
inspection dictates.
~
Use high tempe:ature cut-off switch in
~
the hot water SIde
to
protect unit
from
overheating.
14
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