Hydrostat IC Integrated Boiler Control

The Hydrostat ic is a multi-function, integrated control for atmospheric and induced draft gas boilers! It can provide direct spark ignition, temperature limit control, low water-cut off, fuel saving boiler reset and two zone capabilities, all in one control!

Hydrostat ic Models!

  • Model 4200a (For atmospheric draft boilers, mounted internally)
  • Model 4200i (For induced draft boilers, mounted internally)
  • Model 4200ax (For atmospheric draft boilers, mounted externally)
  • Model 4200ix (For induced draft boilers, mounted externally)



Temperature Limit

      • Designed for atmospheric and/ or induced draft gas boilers

Low Water Cut-Off

      • Provides protection against potentially dangerous low water conditions when installed with the Hydrolevel Electro-Well™

Boiler Reset

      • Thermal Targeting – On-board microprocessor saves fuel by adjusting boiler temperature based on heating demand
      • Outdoor Reset Ready – Provides outdoor reset and warm weather shutdown with addition of Outdoor Sensor Kit

Spark Ignition

      • Intermittent Spark Ignition with single rod flame sensing

Two Zone Capability

    • Circulator outputs for DHW or second heating zone Optional primary/secondary operation
Line voltage input: 120 VAC, 50/60 HZ
Low voltage input: 24 VAC, 40 VA
Inducer (4200i): 6 FLA, 18 LRA @ 120 VAC
Vent damper (4200a): 0.5 A @ 24 VAC
Circulator contacts: 5.8 FLA, 34.8 LRA @ 120 VAC
Operating range – low limit: Off or 110°F (43°C) – 200°F (93°C)
Operating range – high limit: 100°F (38°C) – 190°F (88°C)
Pilot valve: 2 A @ 24 VAC
Main valve: 2 A @ 24 VAC
Operating ambient temp: -4°F (-20°C) to 150°F (66°C)
Thermostat anticipator: 0.2 A
Trial for ignition: 75 seconds (may vary by model)
Re-trial: 5 minutes
Flame current min: .8 μA
Flame currrent max: 7.3 μA