Fulton Alliance (FT-HC) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 62)

© The Fulton Companies 2012
OPERATION
FTHC-IOM-2012-1001
SECTION 3
3-26
!
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.
 Test of Ignition Safety System Shutoff
Test the ignition system safety shutoff as follows:
1. Shut the pilot valve.
2. Close the last gas valve 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, water fl ow 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 and main).
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
operating temperature.
2. At the recommended standard fl ow rates, and .7 sp gr, the pressure drop
cross the heater should be as shown in Table 9.
3. In the event of an abnormal reading, contact Fulton Service immediately.
Failure to take immediate action in the event of reduced fl uid fl ow may
result in rapid and serious degradation of the fl uid, with possible damage
to the heater.