Operation - ECR International PENNCO FSB 3 Series Installation, Operation & Maintenance Manual

A�5 Operation
Module continuously monitors boiler water temperature and
fires or shuts off burner based on this temperature data.
1. When "Call for Heat" occurs, control enables circulator
and monitors boiler water temperature to determine
whether thermostat can be satisfied without firing
burners.
State
Code
Definition
Number
Idle
1
Circulator
Wait for pressure switch
2
to open
Wait for pressure switch
3
to close
Pre-purge
4
6 Spark
Flame stabilization
7
Running
8
Post-Purge
9
Retry delay
10
Recycle delay
Wait for pressure switch
11
to open - failed to close
Wait for pressure switch
12
to close - failed to open
13 Soft lock-out
Hard lock-out
14
Wait for limit to close
15
Flame out of sequence
16
Pilot valve diagnostics
Current leakage detection
17
Wait for recovery
APPENDIX A - CONTROL MODULE
2.
3.
4.
Table 9 - Operation State Codes
Standby - no call for heat
Heat request present. Boiler temperature sufficiently high to run circulator
pump only.
Inducer is off. Control waits for pressure switch to open.
Checked at beginning of heat cycle before turning on inducer.
If pressure switch does not open in 60 seconds, control goes to State 11.
Inducer is turned on. Control waits for pressure switch to close.
Checked at beginning of heat cycle after turning on inducer.
If pressure switch does not close in 60 seconds, control goes to State 12
System is purging before ignition trial; includes Pilot Valve circuit diagnostics.
System sparking. Flame is not present
Flame signal is being established. Variation in signal is allowed during this
state, flame must be stable at end of period
System is running. Flame signal must be present.
System is purging at end of call for heat
Successful ignition was not detected, and delay is called before retry.
Flame signal was lost, and delay is called before retry
Inducer is still off. Pressure switch has not opened at beginning of heat cycle.
Alarm is sent, but no lockout occurs
Inducer is on. Pressure switch has not closed at beginning of heat cycle.
Alarm message is sent but no lockout occurs.
Soft lockout duration is one hour, may override with manual reset.
Manual reset is required for hard lockout
Possible thermostat call for heat; limit switch is open.
Flame signal sensed before trial for ignition. Appropriate alarm is sent.
OR
Flame signal sensed during post purge. Appropriate alarm is sent.
OR
Flame signal present when not expected. Appropriate alarm is sent.
Pilot valve circuitry diagnostics during pre-purge.
Self check performed at start up, again at beginning of heat cycle, and during
"Wait for Recovery " State.
Self check performed at start up, again at beginning of heat cycle, and during
"Wait for Recovery " State
35
Control determines burner operation is required,
module proceeds to start burner (see state codes list)
and heats water in boiler until setpoint temperature is
achieved or thermostat is satisfied. .
Burner is de-activated, ignition module completes
heating cycle, returns to idle and waits for temperature
to drop again.
Circulator is turned on throughout "Call for Heat."
Explanation
PN 240013101 Rev. A [08/15/2020]