2.1
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.
Pump rotation (three-phase only):
For three-phase
applications, check for proper pump rotation prior to
introducing fluid to the pump
(see
SECTION 2.4.2
.
Reverse rotation while the pump is filled with fluid will
cause pump seal failure.
2.1.1 COOLANT SUPPLY
When installing the OCSM coolant supply line, refer to
the following HOTSTART guidelines:
•
At a minimum, size the coolant supply line
per the coolant inlet.
NOTICE!
Do not
reduce the supply line inner diameter;
heating effectiveness may be reduced.
•
Install the coolant suction port as low as
possible on the engine’s water jacket.
•
To minimize flow restriction, the coolant
supply line must be as short and as straight
as possible. Use elbow fittings sparingly;
HOTSTART recommends using sweeping
bends or 45° fittings.
2.1.2 COOLANT RETURN
When installing the OCSM coolant return line, refer to
the following HOTSTART guidelines:
•
Size the coolant return line per the coolant
outlet.
NOTICE!
Do not reduce the return
line inner diameter.
•
Install the coolant discharge port as high as
possible on the engine’s water jacket at the
end of the engine opposite the suction port,
typically at the rear of the engine block.
2.1.3 OIL SUPPLY
When installing the OCSM oil supply line, refer to the
following HOTSTART guidelines:
•
At a minimum, size the oil supply line per the
pump inlet.
NOTICE!
Do not reduce the
supply line inner diameter; pump seal
damage will occur.
NOTE:
If the connection to the equipment is smaller
than this port size, immediately increase the
inner diameter to reduce pressure losses in
the plumbing.
•
To minimize flow restriction, the oil supply line
must be as short and as straight as possible.
Use elbow fittings sparingly; HOTSTART
recommends using sweeping bends or 45°
fittings.
2.1.4 OIL RETURN
When installing the OCSM coolant return line, refer to
the following HOTSTART guidelines:
•
Size the oil return line per the oil outlet.
NOTICE!
Do not reduce the return line
inner diameter.
•
Install the oil discharge port at the end of the
sump opposite the suction port to ensure
even heating.
E-3
E-1
V-1
V-2
USER SUPPLIED FULL FLOW ISOLATION VALVE
E-4
E-2
V-4
V-5
V-3
COMPONENT
DESCRIPTION
V-1
USER SUPPLIED CHECK VALVE
V-2
USER SUPPLIED FULL FLOW ISOLATION VALVE
V-3
E-1
COOLANT PUMP
E-2
OIL PUMP
E-3
HEAT EXCHANGER
USER SUPPLIED FULL FLOW ISOLATION VALVE
E-4
V-5
COOLANT HEATING ELEMENT
V-4
USER SUPPLIED FULL FLOW ISOLATION VALVE
Figure 3. OCSM system diagram.
