Fulton Vertical Tubeless (FT-A) Thermal Fluid (hot oil) Heater - Manual (Page 49)

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SECTION 3
FTA-IOM-2013-0227
OPERATION
3-9
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct, and strict
adherence to applicable jurisdictional/
professional codes and regulations.
A qualifi ed installer, service agency or the
gas supplier must perform installation and
service on the fuel delivery system.
During system boilout, it is imperative that
all system legs or paths are open to ensure
fl ow throughout the system. Never open
a cool or unheated user leg of a system
when the rest of the system is above 210 F
( 99 C).
Do not attempt to start the equipment for
any testing prior to fi lling and purging the
vessel. A dry fi re will seriously damage
the equipment and may result in property
damage or personnel injury and is not
covered by warranty. In case of a dry
fi ring event, shut off the fuel supply
and allow the vessel to cool to room
temperature before fl uid is reintroduced
to the pressure vessel.
When opening any drains on the
equipment or piping system, steps should
be taken to avoid scalding/burning of
personnel due to hot fl uids. Whenever
possible, the system should be cooled prior
to opening any drains.
Use only your hand to turn valve handles.
Never use tools. If the handle will not
turn by hand, don’t try to repair. Forced
or attempted repair may result in fi re or
explosion.
12. 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.
13. 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.
14. After fi fty hours of operation at operating temperature, check all fl anges
and connections for tightness.
Combustion
Before fi ring the heater familiarize yourself on the use of the controls, lighting,
and shutdown procedures.
SEQUENCE OF OPERATION FOR GAS FIRED BURNERS
The burner is of forced design. The sequence of operation is as follows:
1. The fl ame programmer opens the main gas valve once stable pilot fl ame is
established.
2. Pressure regulators on both the pilot and main gas supply, supply pressure
to the proper level.
NOTE: Note the maximum inlet pressure rating of each regulator and
supply a step-down regulator if required.
3. Combustion air is delivered by a centrifugal blower fan. An air switch
monitors the pressure and is part of the fl ame programmer safety interlock
circuit.
4. The fl ame programmer monitors the safe operation of the burner.
Functions include pre-purge of the combustion chamber, provision of
ignition via the ignition transformer and electrode, opening the pilot gas
valve, monitoring the pilot fl ame signal via the fl ame sensor, opening main
gas valves and providing post-purge of the combustion chamber.
5. The fl ame is monitored by a fl ame sensor. In the event of insuffi cient,
unstable, or non existent pilot or main fl ame, the fl ame sensor will cause a
safety lockout of the fl ame programmer. Safety lockout can also be caused
if the fl ame sensor is improperly positioned or grounded. After fault has
been corrected, reset by pressing the reset button on the casing of the
burner control box.
SEQUENCE OF OPERATION FOR ON/OFF BURNER
The sequence of operation for the on/off burner is as follows:
1. Beginning with power on, limit switch closed, fuel valves closed, and