White Rodgers 50A56-956 Replacement Kit for York Single Stage Integrated Furnace Control Selectable Continuous Fan Speed Instruccion De Instalación
2
SPECIFICATIONS
ELECTRICAL RATINGS [@ 77°F (25°C)]:
Input Voltage: 25 VAC 50/60 Hz
Max. Input Current @ 25 VAC: 0.45 amp
Max. Input Current @ 25 VAC: 0.45 amp
Relay Load Ratings:
Valve Relay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf
Ignitor Relay: 6.0 amp @ 120 VAC 50/60 Hz (resistive)
Inducer Relay: 2.2 FLA–3.5 LRA @ 120 VAC
Circulator Relay: 14.5 FLA–25.0 LRA @ 120 VAC
Valve Relay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf
Ignitor Relay: 6.0 amp @ 120 VAC 50/60 Hz (resistive)
Inducer Relay: 2.2 FLA–3.5 LRA @ 120 VAC
Circulator Relay: 14.5 FLA–25.0 LRA @ 120 VAC
Flame Current Requirements:
Minimum current to insure flame detection: 1 µa DC*
Maximum current for non-detection: 0.1 µa DC*
Maximum allowable leakage resistance: 100 M ohms
Maximum current for non-detection: 0.1 µa DC*
Maximum allowable leakage resistance: 100 M ohms
*Measured with a DC microammeter in the flame probe lead
TIMING SPECIFICATIONS
(All times are in seconds, unless noted otherwise)
Event
Definition
50A56-956
Pre-Purge
The period of time intended to allow for the dissipation of any unburned
gas or residual products of combustion at the beginning of a furnace
operating cycle prior to initiating ignition
gas or residual products of combustion at the beginning of a furnace
operating cycle prior to initiating ignition
0
Trial for Ignition
Period (TFI)
Period (TFI)
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.
shut off the gas flow in the event of failure to establish proof of the
supervised ignition source or the supervised main burner flame.
7
Ignition Activation
Period (IAP)
Period (IAP)
The period of time between energizing the main gas valve and
deactivation of the ignition means prior to the end of TFI
deactivation of the ignition means prior to the end of TFI
5
Retries
The additional attempts within the same thermostat cycle for ignition
when the supervised main burner flame is not proven within the first
trial for ignition period.
when the supervised main burner flame is not proven within the first
trial for ignition period.
2 times
Recycles
The additional attempts within the same thermostat cycle for ignition
after loss of the supervised ignition source or the supervised main
burner flame.
after loss of the supervised ignition source or the supervised main
burner flame.
4
Valve Sequence
Period
Period
Valve sequence period equals 7 seconds trial for ignition period x
(1 initial try + 2 retries) + 12 seconds.
(1 initial try + 2 retries) + 12 seconds.
21
Interpurge
The period of time intended to allow for the dissipation of any unburned
gas or residual products of combustion between the failed trial for
ignition and the retry period.
gas or residual products of combustion between the failed trial for
ignition and the retry period.
15
Post-Purge
The period of time intended to allow for the dissipation of any unburned
gas or residual products of combustion at the end of a furnace burner
operating cycle. Post-purge begins at the loss of flame sense.
gas or residual products of combustion at the end of a furnace burner
operating cycle. Post-purge begins at the loss of flame sense.
15
Lockout Time
ANSI standard rated module timing.
140
Heat Delay-To-Fan-On
The period of time between proof of the supervised main burner flame
and the activation of the blower motor at Heat speed.
and the activation of the blower motor at Heat speed.
30
Heat Delay-To-Fan-Off*
The period of time between the loss of a call for heat and the
deactivation of the blower motor at Heat speed.
deactivation of the blower motor at Heat speed.
60/90/120*/180
Cool Delay-To-Fan-On
The period of time after a thermostat demand for cool before energizing
the circulator blower motor at Cool speed.
the circulator blower motor at Cool speed.
0
Cool Delay-To-Fan-Off*
The period of time between the loss of a call for cool and the
deactivation of the blower motor at Cool speed.
deactivation of the blower motor at Cool speed.
60
Initial Ignitor Warm-up
The length of time allowed for the igniter to heat up prior to the initiation
of gas flow.
of gas flow.
17
Ignitor Warm-up Retries
In the event of a retry, the warm-up time will be increased by one
second, up to a maximum of 27 seconds, and locked at that duration
second, up to a maximum of 27 seconds, and locked at that duration
27
Auto Reset
After one (1) hour of internal or external lockout, the control will
automatically reset itself and go into an auto restart purge for 60 seconds.
automatically reset itself and go into an auto restart purge for 60 seconds.
60 minutes
Electronic Air Cleaner
Yes
Humidifier
Yes
*This time will vary depending on option switch position. The control is factory set at 120 seconds HEAT delay-to-fan-off.
See OPERATION section for further information
OPERATING TEMPERATURE RANGE:
-40° to 176°F (-40° to 80°C)
HUMIDITY RANGE:
5% to 93% relative humidity (non-condensing)
MOUNTING:
Surface mount multipoise
Timing Specs: (@ 60 Hz**)
maximum
Flame Establishing Time:
0.8 sec
Flame Failure Response Time:
2.0 sec
Gases Approved: Natural, Manufactured, Mixed, Liquified
Petroleum, and LP Gas Air Mixtures are all approved for use.
**At 50% Hz, all timing specifications should be increased by 20%
Petroleum, and LP Gas Air Mixtures are all approved for use.
**At 50% Hz, all timing specifications should be increased by 20%