2
INSTALLATION
CAUTION
!
Pressure hazard:
Power must be turned off and locked out at the service panel when the isolation valves are in the
closed position. Failure to do so may cause damage to heating system components, damage to lubrication oil, leaks
and unexpected release of heated oil.
Overheating hazard:
After completing line installation, top off the fluid levels to compensate for the fluid used to fill
the lines and heating tank. Do not operate the heating system without the presence of fluid. Position the heating tank
to ensure it is completely full of fluid while in operation.
Pump priming:
Fill supply line with fluid. Pump is not self-priming. Fluid must be present in the pump before start-up.
Trapped air inside the pump will cause pump and seal damage.
Pump seal damage:
Do not reduce the oil supply line to an inner diameter smaller than the pump inlet; pump seal
damage could occur.
Check valve:
HOTSTART recommends installing a customer-supplied swing-type or full-flow check (non-return) valve to
prevent oil from flowing back into the oil sump. If the pump is installed above the minimum oil level, a check valve
must
be installed.
Isolation valves:
HOTSTART recommends installing full-flow ball valves to isolate the heating system in order to
perform service on the system or engine without draining the oil.
