HONEYWELL S87B1016 / ignition transformer

HONEYWELL S87B1016 /IGNITION TRANSFORMER

APPLICATION
The S87 is a low voltage, solid state, direct spark ignition
control module for gas-fired furnaces, boilers and heating
appliances. Models are available with or without a prepurge
timer. The S87 controls the gas valve, monitors the main
burner flame and generates a high voltage for spark ignition.

FEATURES
• S87A uses a single electrode for spark ignition and flame
sensing. Use only with Resideo gas controls designed for
OSI application: V845, V854, VR845, VR854, VR8450 and
VR8540.
• S87B uses a single electrode for spark ignition and flame
sensing. Use with any gas control designed for OSI
application that is rated at 2.0 A or less. Includes optional
alarm circuit for use on system safety lockout
• S87C uses separate electrodes for spark ignition and
flame sensing. Use only with Resideo gas controls
designed for OSI application: V845, V854, VR845, VR854,
VR8450 and VR8540. For direct replacement of S825C.
See page 3.
• S87D uses separate electrodes for spark ignition and
flame sensing. Use with any gas control designed for OSI
application that is rated at 2.0 A or less. Includes optional
alarm circuit. For direct replacement of S825D. See page
3.
• S87J uses a single electrode for spark ignition and flame
sensing. Use with any gas control designed for OSI
application that is rated at 2.0 A or less. Includes a 30
second (minimum) delay for use with system prepurge.
• S87K uses separate electrodes for spark ignition and
flame sensing. Use with any gas control designed for OSI
application that is rated at 2.0 A or less. Includes a 30
second (minimum) delay for use with system prepurge.
• External, replaceable fuse protects system transÂformer
and temperature controller.
• Automatic system lockout after trial-for-ignition if
malfunction exists or main burner flame fails to ignite. All
models available with 4, 6, 11, or 21 second (nominal)
lockout time.
• Compact, solid state components for accurate, longlasting
performance.
• Convenient remote start procedure; after safety
shutdown, control module can be reset from the
temperature controller.
• Low voltage control circuit reduces wiring costs.
• Uses flame rectification principle to prove presence of
main burner flame; false flame signal resulting from short
to ground results in safety shutdown.

Electrical Ratings:
Voltage and Frequency: 25 Vac, 60 Hz.
Current Rating: 0.2 A at 25 Vac.
Valve Contacts (S87B,D,J,K): 2.0 A at 25 Vac.
Alarm Contacts (S87B,D): 0.5 A at 25 Vac.

NOTE:

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