2.3
MOUNTING
NOTICE
Heating system damage:
Engine vibration will damage
the heating system; isolate both the tank assembly and
control box from vibration. Never mount the heating
system or components directly to the engine.
2.3.1 TANK AND PUMP
NOTICE
Overheating hazard:
When mounting the heating tank
assembly, position the tank and heat exchanger so that it
they are completely full of fluid while in operation.
Mount the heater in a horizontal orientation with heat
exchanger directly above tank. Reference drawings for
mounting position. When installing the heating system,
note that the tank requires a minimum of 18 to 20
inches (46 to 51 cm) of clearance to remove element for
maintenance.
See
SECTION 4.2.7
2.4
ELECTRICAL CONNECTIONS
WARNING
!
Hazardous voltage:
Before wiring, servicing or
cleaning the heating system, turn off the power
and follow your organization’s lockout and tagout
procedure. Failure to do so could allow others to turn
on the power unexpectedly, resulting in harmful or
fatal electrical shock.
Electrical hazard:
All wiring shall be done by qualified
personnel in accordance with national, state and local
codes. Each system shall be grounded in accordance
with the National Electrical Code. Failure to properly
ground the system may result in electrical shock.
2.4.1 MAIN POWER SUPPLY
1.
Connect the specified power from the customer-
supplied circuit breaker to the terminal blocks
located in the main control box.
See Figure 6 on
following page.
NOTE:
The specified power source must be within
plus or minus 10% of the rated voltage.
NOTE:
The circuit breaker must be near the
heating system and easily accessible.
HOTSTART recommends connecting the
heating system to a circuit breaker rated for
125% of the system’s maximum load.
NOTE:
The main power supply operates the
heating element and the oil pump. A
transformer is used to operate the control
circuit and coolant pump. The transformer
and control circuits are overload-protected.
h
For
three-phase applications
, the terminal
blocks are labeled
L1
,
L2
and
L3
(A)
.
h
For
single-phase applications
, use the terminal
blocks labeled
L1
and
L2
or
L
and
N (A)
.
2.
Connect the main power ground wire to the ground
block
(B)
.
2.4.2 MOTOR ROTATION CHECK
NOTICE
Pump rotation (three-phase only):
For three-phase
applications, check for proper pump rotation prior to
introducing fluid to the pump. Reverse rotation while the
pump is filled with fluid will cause pump seal failure.
Pump damage:
Do not run the motor/pump assembly
dry for more than a few seconds. Running a motor/pump
for a prolonged period without being completely filled
with fluid may cause damage to the pump seal.
The following procedures are for three-phase
applications only. Single-phase systems are prewired to
ensure the pump motor rotates in the correct direction.
1.
With main power connected to the heating system
(see
SECTION 2.4.1
)
, press and hold the
prime
button while observing the rotation of the oil pump
motor fan at the rear of the motor. Refer to rotation
decal on motor for correct rotation.
Figure 4. Mount unit in orientation shown. Do not mount at an angle
or in any other orientation.
A
Figure 5. OCSM control box side
view, showing 0.75
″
NPT main power
entrance
(A)
.
