Fulton Vertical Tubeless (FT-A) Thermal Fluid (hot oil) Heater - Manual (Page 58)

© The Fulton Companies 2013
OPERATION
FTA-IOM-2013-0227
SECTION 3
3-18
!
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.
1. The diff erence between the readings of the two gauges indicates the
pressure loss across the heater. The diff erence must not fall below the
recommended value. Recommendations are based on heater size and are
listed in this manual (see Table 9) and on the product data submittals on
www.fulton.com.
2. The gauge indicating the pressure of the fl uid at the inlet is labeled “Inlet“.
The “Outlet” gauge indicates the pressure at the outlet, and in eff ect
indicates the resistance of the external pipework circuit. The pressure
gauge indicating pressure at the inlet of the pump is labeled “Suction.”
Test of Ignition Safety System Shutoff
Test the ignition system safety shutoff as follows:
1. Shut the pilot ball valve.
2. Close main gas ball between the inlet to the burner and the butterfl y valve.
3. With the main gas cock (inlet manual gas valve) open, the burner
should be cycled on. After all the safety limits such as gas pressure and
temperature are satisfi ed, the blower will run and pre-purge the heater.
4. Once the purge is complete (30 seconds), the ignition transformer will be
energized. There will be a 4 second trial for ignition period. During this
period, indicator lights on the fl ame safeguard (pilot).
5. With no fl ame established, the fl ame safeguard will not receive a fl ame
signal from the scanner.
6. After 4 seconds, the fl ame safeguard programmer will assume a “Flame
Failure” condition and go to a “lockout” mode. Lockout will require manual
reset of the fl ame safeguard.
7. After completing this test, open the gas valve.
Cycle Testing
The heater should be cycled tested and automatically allowed to go through
its normal starting sequence several times to verify that all components are
functioning properly. This will also verify that combustion is set properly so that
heater light off has a smooth transition from ignition to main fl ame.
A minimum of 10 cycles should be met without any fl ame failures, with
combustion readings comparable to the factory test fi re sheet and no interlocks
causing the heater to shutdown.
Required Pressure Drop Across the Heater
The thermal fl uid pressure drop across your heater is critical. This should be
recorded at the completion of start-up, as follows:
1. The pressure drop value is obtained by subtracting the heater outlet
pressure from the heater inlet pressure when the thermal fl uid is at normal