Waiting; Ignition - ProFire PF2200-SB Product Manual

2.2.5 WAITING

Waiting is considered a "running" state of the system, with all powered outputs de-energized. The
system will hold this state until all wait conditions have been cleared or shut down if an alarm is
present. Once all waits have been cleared the system will automatically trigger a startup sequence
without any user interaction – provided no alarms are present. Note: purging after a flame loss is
considered a wait.
In the Waiting state, the status of each powered outputs is as follows:
Powered Output
Pilot 1 / 2
Coil 1 / 2
SSV
HFV

2.2.6 IGNITION

Ignition is the process of safely establishing a pilot flame and the system achieves this by energizing the
coil and pilot outputs while monitoring flame presence on the ionization inputs. Actuating and
monitoring of Pilot 2 can be enabled / disabled via the user interface and should only be enabled if a
multiple-pilot configuration is desired.
The sequence begins by energizing the coil output(s) and waits the Pre-Ignition Time. After the Pre-
Ignition Time, the system then energizes the pilot output(s) and monitors flame presence. This stage is
referred to as Ignition on the user interface. If a flame is not detected within the Pilot-Flame
Establishing Period window, the system will purge and enter the waiting state, while decrementing the
Relights Remaining counter. If the system tries to light 3 times and fails to establish a flame, it will
proceed to Lockout (Flame-Fail). Note that a successful establishment of flame effectively resets the
Relights Remaining counter. If a flame is detected within the Pilot-Flame Establishing Period window, the
system will proceed to hold a pilot flame for a startup delay time. This startup delay helps warmup the
appliance and establish draft in the appliance. Once the flame has been established and the startup
delay time has elapsed, the system will move into the Pilot state.
If the Pilot 2 is enabled, the system requires both flames to be satisfied within the Pilot-Flame
Establishing Period in order to proceed.
If the Pilot 2 is disabled, the system only requires Pilot 1 flame to be satisfied within the Pilot-Flame
Establishing Period in order to proceed.
Any alarms or waits that occur during this still will force the system to go to the respective state (e.g.
alarm or wait, respectively).
In this system state, the status of each powered outputs is as follows:
Status
De-energized
De-energized
De-energized
De-energized
Section 2: PF2200-SB PRODUCT DESCRIPTION
V 4.0
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