Fulton Hopkins (HPN) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 51)

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SECTION 3
HPN-IOM-2014-0416
OPERATION
3-19
!
WARNING
Do not operate, or allow others
to operate, service or repair this
equipment unless you (they) fully
understand all applicable sections
of this manual and are qualifi ed to
operate/maintain the equipment.
Non-Fulton product information is for
reference purposes only. No Fulton
document may substitute for full
review of documentation available
from the component manufacturer.
to typical heaters. These sections are provided for general information purposes
only, and do not necessarily refl ect the specifi c details of individual systems.
At commissioning, the operation of all safeties and interlocks should be verifi ed.
Setpoints of all pressure and temperature switches as well as the programs for
all programmable controls (temperature controls, temperature limits, operating
controls, servo motors etc.) should be recorded for future reference. Contact the
Fulton Service Department with any questions regarding the proper operation,
set points and verifi cation procedures for these controls.
 Liquid Level Switch - When Combination Tank is Supplied
Adhere to the following:
1. Locate the liquid level switch (ships in the parts box, see Figure 13) and
install prior to operation of the equipment. The liquid level switch is wired
to the main heater panel. Failure to “make” this switch will result in lack of
power at the panel.
2. In the event of system fl uid loss, the level in the expansion section of the
combination tank will drop, and the liquid level switch will shut the unit
down. Control power will be lost to the panel.
3. To confi rm operation, manually trip the liquid level switch. Unit should
shut down; pump will stop. Refer to Figure 10.
 Air Safety Switch
1. The air safety switch is installed in the heater panel and is connected
by tubing to the blower outlet. This switch requires that the blower fan
deliver combustion air before energizing any fuel valves.
2. While fi ring, disconnect the copper line from the fi tting in the top cover of
the air switch. The burner should shut down. Attempt to restart the unit by
resetting the fl ame programmer.
3. Blower motor will start, but fi ring sequence should not begin.
4. Lockout of LMV will occur.
 Blower Motor Starter
NOTE:  For units equipped with manual trip test button or motor starter.
1. While fi ring, actuate the manual trip button on blower motor starter. Unit
should lock out. Attempt re-start by resetting the fl ame programmer.
Purge cycle will not begin.
2. Reset motor starter; blower should start and purge cycle will begin.
3. Lockout of LMV will occur.