2.1
OIL PLUMBING
INSTALLATION
NOTICE
Heating system damage:
Engine vibration will
damage the heating system; isolate the heating system
from vibration. Never mount the heating system or
components directly to the engine. If the heating
system is installed using rigid pipe, use a section of
flexible hose to the supply and return ports to isolate
the heating system from engine vibration.
2.1.1 OIL SUPPLY
Installing a short, straight oil supply line with a minimum
of flow restriction is the most important step toward
ensuring heating system longevity. When installing the
OLA oil supply line, refer to the following HOTSTART
guidelines:
•
Due to the increased viscosity of lubrication
oil, the oil supply line must be as short and
as straight as possible. Any 90° elbows will
reduce the maximum recommended oil
supply length.
See Table 1
for HOTSTART
OLA oil supply recommendations:
PUMP
INLET
HOSE INNER
DIAMETER
MAX. LINE
LENGTH
MAX. ELBOW
COUNT
1/2 inch
NPT
1 inch
20 feet
(6 meters)
4
1 inch
NPT
1-1/2 inch
20 feet
(6 meters)
4
1-1/2 inch
NPT
2 inch
20 feet
(6 meters)
4
2-1/2 inch
NPT
3 inch
20 feet
(6 meters)
4
OOE:
Each additional pair of 90° elbows will reduce
the maximum recommended line length
by five feet (1.5 meters). To minimize flow
restriction, HOTSTART recommends using
sweeping bends or 45° fittings.
•
At a minimum, size the oil supply line per the
pump inlet.
OOICE!
Do not reduce the
supply line inner diameter; pump seal
damage will occur.
OOE:
To maximize flow and allow the longest
possible supply line, install the largest
practical inner diameter hose; for most
installations, HOTSTART recommends using
a hose with a size larger inner diameter than
the pump inlet.
•
Install the oil suction port as low as possible
in the oil sump, typically near or on the third
inspection cover.
OOICE!
Avoid installing
the oil suction port in a location that may
allow debris or sediment to enter the
heating system.
•
HOTSTART recommends installing a
customer-supplied, swing-type or full-flow
check (non-return) valve to prevent oil flowing
into the sump. Install the check valve as close
to the oil supply port as possible.
•
To ensure consistent oil heating, it is
acceptable to select a suction port on the
opposite side of the sump.
2.1.2 OIL RETURN
When installing the OLA oil return line, refer to the
following HOTSTART guidelines:
•
At a minimum, size the oil return line per the
pump outlet.
OOICE!
Do not reduce the
return line inner diameter.
•
The return line may be routed to the opposite
end of the oil sump
or
the oil return line
may be routed to a prelube location.
See
SECOIO 2.3
.
Table 1.
HOTSTART
recommended hose inner diameters, line
lengths and elbow counts for OLA oil supply lines.
