• 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 lb 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
  
  

  Sid Harvey Remanufactured C255-130R

• Pressure actuated high limit, safety control for steam heating boilers, It breaks an electrical circuit to shut down the burner if steam pressure rises above a safe level
• Contains an SPST Micro switch snap-acting switch
• Sensitive pressure actuated diaphragm expands or contracts with pressure variations, moving a lever mechanism which operates the snap switch
• A screw on top of the case allows setpoint adjustment without removing the cover
• Differential is adjusted by means of a dial located inside the case
• Recommended minimum setpoint is differential setting plus 1-1/2 psi
• Stainless steel diaphragm sensor element
• Makes at setpoint on pressure fall breaks at setpoint plus differential on pressure rise Honeywell Pressuretrol PA404A Pressure Controller with additive differential, 0.5 - 9 psi, 3-3/8 Inch W x 4-15/32 Inch H x 2-1/4 Inch D,
  
  

  Sid Harvey Remanufactured C354R

Sid Harvey C255-132R

• Time initiated and time terminated
• Adjustable frequency defrost from 1-6 cycle per day, minimum 4 hr between successive operations
• Defrost duration accurate to plus/minus 2 min
• Positive switch action slider bar
• Heavy-duty, synchronous, industrial type motor
• Switch contact arrangement: 2-4 close, 1-3 open, 3-N close,
  
  

  Sid Harvey Remanufactured C255-118R

Sid Harvey C255-120R

Sid Harvey Remanufactured C434-12R

• 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,
  
  

  Sid Harvey Remanufactured C312-9R

Sid Harvey Remanufactured C346-72R

• EnviraCOM, a low-cost 3-wire communication protocol that allows different devices, such as communicating thermostats, aquastats and oil primaries, to connect and share information Honeywell L7224U1002 Electronic Oil Aquastat, 120 VAC, 130 - 240 deg F High Limit, 110 - 220 deg F Low Limit , 5 - 20 deg F Fixed High Limit, 10 - 25 deg F Adjustable Low Limit Differential
  
  

  Sid Harvey Remanufactured C317-14R

Sid Harvey Remanufactured C346-70R

Sid Harvey Remanufactured C290R

Sid Harvey Remanufactured C312-10R