Position
Drive to Ignition Position
Preignition (Spark) = ON
Main Valve = ON
Ignition (Spark) = OFF
Interval 1
(Main Stabilization)
Operation 1
(Normal Operation)
Operation 2
(Driving to Low Fire)
Afterburn Time
Drive to Postpurge Position
Mandatory Postpurge
Optional Postpurge
Phase 00 02 10 12 22 24 30 35 36 38 40 42 44 60 62 70 72 74 78
Terminal Description Notes
X3-04.1
Safety Loop (Limits)
M
X5-03.1
On / Off Switch
M
N/A
Flame Signal
X X X X X M F X
X3-02.1
Blower Air Switch (APS) Note 1
F X M
High Oil Pressure Switch Note 2, 3
POC Note 3
F X M
X9-04.2
Low Oil Pressure Switch Note 5
X3-05.1
Fan
X X X X
X3-05.3
Continuous Fan
X4-02.3
Ignition Note 6
X X X X X X X X X X X X
X3-05.2
Alarm Note 4
X X X X X X X X X X X X X X X X X
X6-03.3
Oil Valve SV (Usually Outdoor)
X X X X
X8-02.1
Oil Valve V1 (Main)
X X X X X X X X X X X X X X
X7-01.3
Oil Valve V2 (Staged, Load Dependent)
X X X X X X X X X X X X X X X X X X
X7-02.3
Oil Valve V3 (Staged, Load Dependent)
X X X X X X X X X X X X X X X X X X
L
egend :
M
F
X
INPUTSOUTPUTS
Parameter 208 (Program Stop)
START-UP
OPER-
ATION
SHUTDOWN
X5-02.2
Must be energized by end of phase
E
nergized or de-energized Must be de-energized by end of phase
De-energized
See Note 6
SAFETY
T
IME 1
Energized
SCC Inc. Page 23 Section 3