Fulton Hopkins (HPN) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 40)

© Fulton Companies 2014
OPERATION
HPN-IOM-2014-0416
SECTION 3
3-8
!
WARNING
Before commissioning the equipment,
verify with authorized personnel that
the gas lines have been purged.
Never attempt to operate a heater that
has failed to pass all the safety checks.
After checking controls by manual
adjustment, make sure they are
always reset to their proper settings.
Contact your Fulton dealer before
modifying the equipment.
If any “Manual Reset” limit device trips
DO NOT reset without determining
and correcting the cause. (Manual
Reset Limits may include: fl ame
safeguard, high or low gas pressure,
high temperature limit, high pressure
limit)
Never tamper with low water (liquid
level) cutoff sensors or circuitry.
WHAT TO DO IF YOU SMELL GAS :
Do not use matches, candles, fl ame
or other sources of ignition to check
for gas leaks. Do not try to light the
appliance. Do not touch any electrical
switch; do not use any phone in your
building. Immediately call your gas
supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
If you cannot reach your gas supplier,
call the fi re department.
If excessive amounts of thermal fl uid
are to be vented from the system,
additional thermal fl uid may be
required in the system. Contact Fulton
for further information.
Flash steam may be generated at any
point up to the operating temperature.
Watch for gauge fl uctuations.
If fl uid or piping is added to the
system, the boilout procedure must
be followed as water may have been
introduced to the system.
amount of time which must be allotted for fi ltering varies with the system.
6. When the system is initially brought up to temperature, additional pipe
scale and welding slag will loosen and enter the fl uid stream. This will be
trapped in the strainer causing vacuum at the pump suction.
 Boilout
1. Check for correct fuel feed. All air must be eliminated from fuel lines, gas
piping, preheaters, etc. by proper, approved methods.
2. Open all manual valves in the fuel oil supply line. Do not run the fuel pump
dry or without fuel lines connected to fuel source. Do not allow the fuel oil
pump to pull a vacuum.
3. Check safeties.
4. Disable N2 blanket if equipped and open vent line on DA tank.
5. Set burner switch to “ON”. The burner will begin the call for heat if oil
temperature is below setpoint.
6. With burner fi ring and pump running, keep checking the gauges
indicating pump and circuit pressures. Make sure they remain stable.
7. In case of pressure fl uctuations, stop the burner, but allow the pump to
continue to circulate fl uid.
8. When pressures have stabilized, start burner again.
9. Continue in this manner up to the maximum operating temperature.
Throughout the initial warm-up, the expansion tank and its overfl ow pipe
must be watched to detect the formation of steam, indicating the presence
of water. If this occurs, burner should be shut down.
10. If steam is forcing thermal fl uid out of the expansion tank vent, turn
the heater off , but leave the pump on. This is to circulate the hot fl uid
through the piping without fl ushing the steam too quickly. Once steam
and thermal fl uid stop leaving the expansion tank unit, the heater can
be turned on. Increase the temperature very slowly to prevent fl uid from
being forced out of the tank.
11. Continue bringing unit up to temperature slowly, with a temperature rise
not exceeding 100°F (38°C) per hour. Do not exceed specifi ed maximum
outlet temperature. In the absence of specifi c information, consult the
factory before proceeding.
12. Once up to temperature, check the fl uid level in the expansion section by
opening the high level manual test connection. If a permanent fl ow of fl uid
results when this valve is opened, and if all previous precautions have been
followed, the expansion tank is too small for the capacity of the fl uid in the
installation. A larger tank must be installed.
13. After fi fty hours of operation at operating temperature, check all fl anges
and connections for tightness.