ProFire PF2200-SB Product Manual page 13

2.1.2.5 HIGH FIRE VALVE (HFV) OUTPUT
One powered output (terminals 23 and 24) is intended to be connected to a solenoid valve when a
staged heating appliance is needed. In this application, the high fire valve output is intended to be the
highest level of heat demand (Stage 2). If a lower level of heat demand is needed, the high fire valve will
be de-energized while the Main Valve Outputs (SSV) will be energized (Stage 1).
2.1.2.6 START/STOP SWITCH
The external Start/Stop switch can be used to start, stop or clear a lockout on the system. The various
positions / actions are outlined in the table below:
Switch State
Stop
Run
Ignite
Run -> Stop -> Run
Note: if switch is held in the Ignite state for longer than 5 seconds, the system will alarm.
2.1.2.7 EMERGENCY SHUTDOWN (ESD) INPUT
The ESD input (terminals 33-34) is an energized-to-run digital input that is always enabled. If the
contact is de-energized, the system will present an alarm and proceed to lockout (if running). If the
contact is energized, the alarm will clear.
Behavior
Hold the system in lockout
Transition to a ready state or maintain a running
state.
If held for 1 second or more, transition into the
Confirm Start state.
Acknowledge and clear lockout condition
Switch State Mode
ESD or Shutdown
Ready
System Start
N/A
Section 2: PF2200-SB PRODUCT DESCRIPTION
V 4.0
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