ProFire PF2200-SB Product Manual page 12

2.1.2.1 PILOT VALVE OUTPUTS (Pilot 1 and Pilot 2)
Two powered outputs (terminals 15-16 and 17-18) are intended to be connected to solenoid valves
which control the fuel line for the pilot. When Pilot 2 is enabled, both outputs work in conjunction with
one another meaning that they energize and de-energize in unison. If Pilot 2 is disabled, the Pilot 2
output will stay de-energized. The Pilot Outputs are capable of PWM output mode at a fixed 3 kHz
frequency. Supported duty cycles for PWM mode are 10-100% and are configurable via the user
interface.
2.1.2.2 MAIN VALVE OUTPUTS (SSV)
Two powered outputs (terminals 19-20 and 21-22) are intended to be connected to solenoid valves
which control the main fuel line for the burner. Both outputs work in conjunction with one another
meaning that they energize and de-energize in unison. The Main Valve Outputs are capable of PWM
output mode at a fixed 3 kHz frequency. Supported duty cycles for PWM mode are 10-100% and are
configurable via the user interface.
2.1.2.3 IGNITION OUTPUTS (Coil +/-)
Two powered outputs (terminals 55-56 and 59-60) are intended to be connected to an ignition source
(e.g. ignition transformer). When Pilot 2 is enabled, both outputs work in conjunction with one another
meaning they energize and de-energize in unison. If Pilot 2 is disabled, the Pilot 2 Coil output will stay
de-energized. Two ignition modes are supported by the system and configurable via the user interface:
Coil Mode and High Energy Ignition (HEI) mode. Coil mode sends a pulsed signal of fixed frequency and
duty cycle and is intended to be used in conjunction with an ignition transformer. In HEI mode, the
output is energized with a steady state DC voltage that can be used to enable an external High Energy
Ignition source.
2.1.2.4 FLAME DETECTION I/O (Ion +/-)
Two Ionization flame detection I/O (terminals 53-54 and 57-58) are supported by the PF2200-SB. These
terminals are intended to be connected to a flame rod which makes physical contact with the flame.
Through the use of the rectification property of the flame, the PF2200-SB measures the presence of
flame by applying an AC signal to the rod. If an open circuit event exists, the result will be a loss of
flame.
Pilot 1 flame detection is always enabled, whereas Pilot 2 flame detection can be enabled or disabled
via the user interface. If Pilot 2 flame detection is enabled, both Pilot 1 and Pilot 2 flames must be
established and present in order for the system to continue to run.
Section 2: PF2200-SB PRODUCT DESCRIPTION
V 4.0
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