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R4140G FLAME SAFEGUARD PROGRAMMING CONTROLS
60-2337—3
27
M10061
TIMER
SECONDS
INTERRUPTED
PILOT/IGNITION
OR 1ST STAGE
OIL VALVE
20 SECOND
INTERRUPTED
PILOT/IGNITION
MAIN FUEL VALVE
OR 2ND STAGE
OIL VALVE
0 10 20 30 40 50 60 70 80 90 100 110 120
3
1
1
2
3
2
12
5
6
TERMINAL NUMBERS (CIRCLED).
TIMER STOPS AT 104 SECONDS FOR THE RUN PERIOD WITH THE
BURNER FIRING.
IF A 2ND STAGE CONTROLLER IS USED, THE 2ND STAGE OIL VALVE
IS ENERGIZED ONLY WHEN THERE IS A DEMAND FOR MORE HEAT
AND THE 2ND STAGE CONTROLLER CONTACTS CLOSE.
RUN
PERIOD
Fig. 18. Partial timer sequence for optional hookups of R4140G Programmers.
Step-By-Step Operation
(for Two-Stage Switching or Intermittent Pilot/
Ignition of a Nonmodulating Oil Burner)
Ignition Trials
60 seconds—M4A closes; power is applied to terminals 5
and 6, energizing the ignition transformer and pilot
valve (or first stage oil valve solenoid when using two-
stage switching).
— When a flame is detected, 2K pulls in, 2K2 opens,
and the LS HTR stops heating; 2K1 and 2K3 close.
70 second—M2B opens; pilot or ignition trial ends; a flame
must be detected by this time (2K pulled in and 2K1
closed) or safety shutdown occurs and the lockout
switch trips.
— M2A closes; power is applied to terminal 7,
maintaining power at terminals 6 and 11 (through
the jumpers) until the Run period is completed.
80 seconds—M6B opens: 20 second interrupted pilot/
ignition (terminal 5) de-energizes.
100 seconds—M8A closes; power is applied to terminal
12, energizing the main fuel valve (or second stage oil
valve solenoid when using two-stage switching).
NOTE: If using two-stage switching with a second stage
controller, the second stage oil valve solenoid
energizes only when there is a demand for more
heat and the second stage controller contacts close.
104 seconds—M5B opens; timer stops with the system in
the run condition.
NOTE: Intermittent pilot/ignition and all fuel valves and
solenoids (terminals 6 and 12) de-energize when the
Run period is complete and the main burner
controller contacts open.
For complete installation, checkout, troubleshooting, and
service information, refer to form 60-0770.