Product Details:
Voltage: 120Vac
Pre-purge: 70sec
Flame establishing period: 10, 30 or 60 sec
Postpurge: 25 sec
Early spark termination: 5 second ignition and 5 second pilot only

Automatic R4140G1114 programming control:
Application:-
The R4140G Flame Safeguard Programmers provide flameout protection plus automatic sequencing of the burner motor (blower), firing rate motor, ignition, pilot valve, and main
fuel valve(s) for commercial and industrial burners using gas, oil, coal, or a combination of fuels.

Features:-
Approvals: Underwriters Laboratories Inc. listed or component recognized, Canadian Standards Association certified, and Factory Mutual approved for automatic fired burners.
The R4140 directly replaces the R4150 for most applications and mounts on the same Q520A Wiring Subbase.
Low-high-low purge programmers.
Field selectable main burner flame-establishing period.
Early spark termination (five-second ignition and five second pilot only) available on some models.
Plug-in, solid state, flame signal amplifiers are color coded and interchangeable to allow the use of any type of flame detector-flame rod, photocell, infrared detector, or ultraviolet detector.
Amplifier capability includes three standard models, three Dynamic Self-Check models, and one Dynamic Ampli-Check model.
R7247C or R7476A Dynamic Self-Check Amplifier, when used with an ultraviolet flame detector with a self-checking shutter (R7247C with a C7012E or F; R7476A with a C7076), tests all electronic components in the flame detection system (amplifier and detector)
60 to 240 times a minute during burner operation and shuts down the burner if the detection system fails.
R7247B Dynamic Self-Check Amplifier, when used with a rectifying flame rod (which is considered fail-safe), or R7248B Dynamic Ampli-Check Amplifier, when used with a C7015A Infrared (lead sulfide) Flame Detector, tests the flame signal amplifier at least 150 times a
minute during burner operation and shuts down the burner if the amplifier fails.
All models feature capability of proving low fire position of the firing rate motor before starting ignition trials.
Provisions for connecting preignition or start interlocks (depending on model) to prove the proper conditions for startup, and for a combustion airflow switch to prove airflow throughout the operating cycle.
All models have 4-wire firing rate switching circuitryfiring rate can be modulated while the burner is firing, and the firing rate motor can be driven to both low and high fire positions during pre-purge.
Safe start check at startup and during pre-purge. If flame relay 2K is holding in at startup, the programmer cannot be started. If a flame (or a condition simulating a flame) is detected during pre-purge, ignition trials cannot be started and the programmer recycles.
Safety shutdown occurs on failure to ignite the pilot or main burner, on loss of flame during the Run period, or if the flame detection system fails (if a self-checking system is used).
All relays are visible, labeled, and easily accessible.
Alarm terminal is available to operate an external, line voltage alarm on safety shutdown