6
installation
&
operation
manual
|
dlv
heating
system
2.3
COOLANT PLUMBING INSTALLATION
2.3.1 COOLANT SUPPLY
When installing the DLV coolant supply line, refer to the following HOTSTART guidelines:
•
At a minimum, size the coolant 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 coolant suction port as low as possible on the engine’s water jacket, typically near the
main water drain.
•
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.
2.3.2 COOLANT RETURN
When installing the DLV coolant return line, refer to the following HOTSTART guidelines:
•
Size the coolant return line per the pump outlet.
OOICE!
Do not reduce the return line inner
diameter.
•
Install the coolant discharge port as high as possible on the engine’s water jacket on the opposite
end of the suction port; typically near the aftercooler water line discharge port.
OOE:
To ensure even heat distribution, the coolant return line may be split and routed to two return ports. Size both return lines
per the outlet of the heating system. For engines without an aftercooler, typical installation points are along the water line
from the radiator to the engine block.
2.3.3 COOLANT PRESSURE RELIEF
•
To safeguard personnel and equipment, attach an appropriately sized pipe to the pressure relief
valve and route to a safe area, bucket or catch-basin.
CAUOIO !
Coolant pressure relief valve
outlet must be plumbed to a safe area in case an over-pressure release of heated coolant occurs.
Do not connect pressure relief plumbing to coolant system.
