White Rodgers 1F85-277 Guia de Resolução de Problemas descarregar pdf (Página 47)

HEATING TECH HELP INDEX

Model (s) Description Page(s)

36C ....................................................................................................... Wiring ............................................................................ 170– 174

36E ....................................................................................................... Wiring ............................................................................ 175

36G/J .................................................................................................... Gas Burner Controls ...................................................... 175

36H ....................................................................................................... Gas Burner Controls ...................................................... 177

21M51U-843 ......................................................................................... Wiring and Conﬁguration ............................................... 178– 188

21V51U-843 ......................................................................................... Wiring and Conﬁguration ............................................... 189-194

50A55 ................................................................................................... Integrated Furnace Module Troubleshooting Guide ...... 189 – 194

50A55-843 ............................................................................................ Wiring and Conﬁguration ............................................... 195 – 197

50A62-820 ............................................................................................ Wiring and Conﬁguration ............................................... 198 – 201

50A65-843 ............................................................................................ Wiring and Conﬁguration ............................................... 202 – 203

50E47-843 ............................................................................................ Wiring/Conﬁguration/Troubleshooting ........................... 204 – 207

50D50 ................................................................................................... DSI / Proven Pilot Information ....................................... 208

50M56U ................................................................................................ Integrated Two-Stage Nitride Control ............................ 209 – 212

24A01/24A05 ....................................................................................... Outline Drawing and Typical Wiring ............................... 213

3L09 ..................................................................................................... Board Mount Limit Diagrams ......................................... 214 – 216

HEATING

Commonly Used Furnace Control Terms

Auto Reset: If shutoff occurs, the control delays for a speciﬁc recycle delay period before beginning another trial for ignition (models with

retries only).

Continuous: An ignition source which, once placed in operation, is intended to remain ignited or energized continuously until manually inter-

rupted.

Cool Delay to Fan Off: Timing to allow the fan to run after the call for cool ends. This allows residual cooling capacity to be removed from the

cooling coils and distributed to the conditioned space.

Cool Delay to Fan On: Timing to allow the cooling coils to cool off before turning on the fan.

Flame Failure Re-ignition Time: “The period of time between loss of the supervised ignition source or the supervised main burner ﬂame and

a re-ignition attempt. During this time period the main burner gas supply is not shut off.”

Flame Failure Response Time: “The period of time between loss of the supervised ignition source or the supervised main burner ﬂame and

the action to shut off the gas supply.”

Flame-Establishing Period: “The period of time between initiation of gas ﬂow and proof of the supervised ﬂame or between the proof of

supervised ﬂame and initiation of gas ﬂow. This may be applicable to proof of the ignition source or main burner ﬂame, or both.”

Heat Delay to Fan Off: Timing to allow the fan to run after the call for heat ends. This allows residual heat to be removed from the heat ex-

changer and distributed to the conditioned space.

Heat Delay to Fan On: Timing to allow the heat to build up in the plenum before turning on the fan.

Ignition Activation Period: The period of time between energizing the main gas valve and deactivation of the ignition means prior to the

lockout time.

Initial Ignitor Warm-Up: Duration of ignitor warm-up time on the ﬁrst 64 attempts.

Integrated: Has a microprocessor which monitors and analysis the operation of the continually MV, ignitor, inducer, fan, ﬂame sensor, but it

also turns on the humidiﬁer, and air cleaner if those are available in the house. In other words it incorporates the all operations connected to

the furnace from one power source.

Intermittent: “An ignition source which is automatically ignited or energized when the equipment is called on to operate and which remains

continuously ignited or energized during each period of main burner operation. The ignition source is automatically extinguished or deener-

gized when each main burner operating cycle is completed.”

Intermittent/Continuous: “An ignition source which is ignited or energized upon equipment user initiation of the operation cycle and which

remains continuously ignited or energized during the equipment use cycle. The ignition source is extinguished or de-energized when the

equipment use cycle is completed.”

Intermittent/Interrupted: “An ignition source which is ignited or energized upon equipment user initiation of the operational cycle and which is

extinguished or de-energized after the equipment use cycle has been initiated.”

Inter-Purge: Period between trials for ignition when both the gas valve and ignition source are deactivated to allow unburned gas to escape

before the next trial.

Interrupted: “An ignition source which is automatically ignited or energized when the equipment is called on to operate and which remains

ignited or energized during the main burner Flame-Establishing Period. The ignition source is automatically extinguished or deenergized when

each main burner Flame-Establishing Period is completed.”

Lockout Time: The period of time between initiation of gas ﬂow and the action to shut off the gas ﬂow in the event of failure to establish proof

of the supervised ignition source or the supervised main burner ﬂame. Reinitiating the lighting sequence requires a manual operation.

Non-Integrated: Only controls or sends a signal to the ignitor and the mv and monitor the ﬂame sensor

Post-Purge: “After all ignition cycles are complete, the control will enter post-purge. The combustion fan will remain on to allow unburned gas

to escape. After post-purge is complete, the combustion fan will turn off. “

Pre-Purge: Initial time delay between thermostat contact closure and trial for ignition.

Re-cycle: Flame is sensed and then lost causing the control to re-cycle.

Recycle Time: “The period of time between shutoff of the gas supply following loss of the supervised ignition source or the supervised main

burner ﬂame and reactivation of the ignition source.”

Retries: Additional ignition attempts if the original ignition attempt is unsuccessful.

Retry Ignitor Warm-Up: Duration of ignitor warm-up time if the control retries.

Trial for Ignition: Period during which the valve and ignition source is activated, attempting to ignite gas at the burner.

Valve Sequence Period: Valve sequence period is the cumulative total amount of time that the gas valve is energized before entering lockout.

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