The 50A66-743 is an automatic gas interrupted ignition control that employs a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner, inducer, and fan. signals interpreted during continual surveillance of the thermostat and flame sensing element initiate automatic ignition of the burner, sensing of the flame, and system shutoff during normal operation. these controls incorporate system fault analysis for quick gas flow shutoff , coupled with automatic ignition retry upon sensing a fault correction.

• 3-fan speeds
• Remote flame sensing
• Humidifier and electronic air cleaner connections (optional)
• 1.5 amp valve relay
• 6 amp igniter relay
• 2.2 amp full load - 3.5 amp locked rotor inducer relay
• 14.5 amp full load - 25 amp locked rotor circulator relay
• Diagnostic indicator flash codes, controls gas valve, igniter, blower, inducer, humidifier and air cleaner

Sid Harvey Item #:50A66-743: Replaces Part #:'s : 100925-01 | 100925-02 | 100925-03 | 10092501 | 10092502 | 10092503 |,

White Rodgers Cooling Controls SureSwitch 49P11-843 1.5-Pole Relay, 24 VAC at 50/60 Hz, 40,

White Rodgers 49P11-843

White Rodgers 49P11-843

White Rodgers Cooling Controls 50D50-801 Pilot Spark Ignition Control for Gas Appliance 18-30 VAC 0.2 amp,

50D50-801

50D50-801

White Rodgers Cooling Controls 5059-134 Pilot Relite Control, 24 VAC, 0.03 amp

• Generates spark pulse until flame is sensed through spark electrode
• Begins sparking immediately if flame extinguishes
• Rugged solid state module design
• Spike terminal high voltage and 1/4" spade terminals connection

Sid Harvey Item #:5059-134: Replaces Part #:'s : CNT01011,

white rodgers 5059-134

white rodgers 5059-134

White Rodgers Cooling Controls 57T01-843 Blower Time Delay Relay, 24 VAC

• Allows residual cooled air to be blown into the controlled space, increasing the efficiency of the system in cooling
• Depending on electrical hook-up in a heat pump system, delay of blower shut-off could also occur in heating
• Contact rating power pole: 7 amp full load, 36 amp locked rotor, 15 amp resistive, 3/4 HP at 208/240/277 VAC

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White Rodgers 57T01-843

White Rodgers 57T01-843

White Rodgers Cooling Controls 768A Silicon Nitride Hot Surface Ignitor, 80 volt, 2.16" L Lead
White Rodgers 768A-815

White Rodgers 768A-815

White Rodgers Cooling Controls 768A-842 Silicon Nitride Natural/LP Gas Hot Surface Igniter, 120 volt

2-terminal AMP receptacle, 0.093 female sockets
• White teflon coated leads
• Steatite Insulator With Steel Zinc Plated Mounting Tabs
• Must be used with hot surface ignition for 120 volt residential furnaces (silicon nitride replacement only)
  
  

  768A-842

White Rodgers Cooling Controls 768A-845 Silicon Nitride Natural/LP Gas Hot Surface Igniter, 120 volt
white rodgers 768a-845

white rodgers 768a-845

White Rodgers Cooling Controls 768A-844 Silicon Nitride Hot Surface Igniter, 80 VAC, 54 mm L Lead
white rodgers 768a-844

white rodgers 768a-844

White Rodgers Cooling Controls 767A-370 Silicon Carbide Hot Surface Igniter, 120 VAC, 5-1/4" L Lead

White Rodgers 767A370

White Rodgers Cooling Controls 756-50 Limit and Thermostat Combined 90-150 Degrees 170 Degrees Fixed 120/240/277/480 VAC Includes 756-1 & 754-1,

756-50

756-50

White Rodgers Cooling Controls 770-1 Adjustable Dual Purpose Air Pressure Switch, 120/240/277 VAC, SPDT, 0.05 - 12" WC, 1/2 psi Maximum

• Design eliminates"fluttering" or malfunction due to shock or vibration normally encountered with"sail switches"
• Wide operating range
• Can be mounted in any position except upside down
• Enclosed diaphragm
• Responds to positive, negative or differential air pressure

Sid Harvey Item #:770-1: Replaces Part #:'s : 24440,