• Immersion-type controllers that combine high limit protection with switching relay control of burner and circulator motors
• High limit opens burner circuit only
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
• 1-1/2 - 3 Inch depth less well insulation
• Electrical burner rating: at full load: 7.4 amp at 120 VAC, 3.7 amp at 240 VC; at locked rotor: 44.4 amp at 120 VAC, 22.2 amp at 240 VAC; millivolt: 0.25 amp at 1/4 - 12 VDC
• Electrical circulator rating: at full load: 7.4 amp at 120 VAC, 3.7 amp at 240 VAC; at locked rotor: 44.4 amp at 120 VAC, 22.2 amp at 240 VAC Honeywell L8148J1009/U Aquastat Relay, 120 VAC at 60 Hz, SPST, 120 - 240 deg F High Limit, 8 deg F Fixed Differential,
  
  

  C312-9R

Immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems
• Provide multi-zone control by using a separate circulator and R845 relay for each zone
• Include diaphragm powerhead and micro switch assembly that respond to temperature changes in boiler water
• Mount directly to boiler
• Select models include large transformers and extra terminals for supplying power to low voltage zone valves
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
  
  

  C317-2R

Immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems
• Provide multi-zone control by using a separate circulator and R845 relay for each zone
• Include diaphragm powerhead and micro switch assembly that respond to temperature changes in boiler water
• Mount directly to boiler
• Select models include large transformers and extra terminals for supplying power to low voltage zone valves
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
  
  

  C317-5R

• Positive slide bar switch design assures positive electrical contact and wipes the contact surface of contaminates
• Temperature or pressure terminated models are designed to stop defrosting using an external temperature or pressure device
• Safety back-up - mechanical time-driven defrost termination
• Heavy-duty synchronous design drive motor
• Choice of 3-contact arrangements
• Adjustable frequency of defrost initiation from 1 - 6-cycles per day with a minimum of 4 hr between successive operations
• Adjustable back-up defrost termination from 4 - 110 min in 2 min increments
• Have an adjustable cut-in pressure dial calibrated from 36 - 110 Lbs. for R12, R22, R502
• Time initiated/temperature or pressure terminated
• Open switch arrangement for contacts 1 - 3, closed switch arrangement for contacts 2 - 4, closed switch arrangements for contacts 3 - N
• Electric heat, hot gas or compressor shutdown
• 1 year limited warranty Paragon 8141-00 Heavy-Duty Steel Commercial Mechanical Defrost Control, 4 - 110 min, SPDT (1) NO - (2) NC, 120 VAC Electrical, 120 - 240 VAC Switch, 40 amp
  
  

  C255-130R

Immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems
• Provide multi-zone control by using a separate circulator and R845 relay for each zone
• Include diaphragm powerhead and micro switch assembly that respond to temperature changes in boiler water
• Mount directly to boiler
• Select models include large transformers and extra terminals for supplying power to low voltage zone valves
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
  
  

  C317-11R

C346-73R

C346-72R

Sid Harvey C255-120R

Immersion type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems
• Provide multi-zone control by using a separate circulator and R845 relay for each zone
• Include diaphragm powerhead and micro switch assembly that respond to temperature changes in boiler water Mount directly to boiler
• Select models include large transformers and extra terminals for supplying power to low voltage zone valves
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
  
  

  C317-7R

Sid Harvey C255-132R