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Boiler Control Systems

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Boiler & Burner Control Systems – Automatic Water Feeder



Boiler Water Level ControlsOur Controls can be used on either demineralized/deionized water system holding tank with Stainless Steel Floats custom made for your application or as a replacement controller for any of the “on-board spark plug” type sensor. The difference is that our Liquid level Control looks like the competition but it does not act like it. This automatic water feeder system will operate so the sensors will never need to be replaced because of the way we treat the sensor materials.

WaterLine Controls should be considered a complete kit for water level management and can include the sensor the mounting assembly or just the Control Panel depending upon your needs. In cases where the unit is used to fill, a valve of any type as a fill valve is also necessary.

All of our models easily and quickly integrate with existing Building Management Systems (BMS). A BMS allows the operator to continuously monitor and evaluate water consumption and usage. We help ensure trouble-free maintenance for many years and provide a Lifetime Limited Warranty for all of the controls we produce.

Whether you’re looking to build a brand new state-of-the-art boiler installation, or just need to replace the boiler controls on your old system, we can provide you with the most reliable and long-lasting solution to your boiler control needs.


Probe Sensors


probe sensor

The probe sensors in our systems are more than capable of withstanding the harsh conditions present in your boiler’s water tanks and are sure to provide the most accurate and dependable readings for your boiler.

The Sensor options for your Boiler are:

  • Option A – use the “spark plug type sensors” supplied by others
  • Option B – use our Stainless Steel Float switch for deionized or demineralized water, for the holding tank. The sensors should never need to be replaced because of the way we power the sensor system.


Additional Information


Check out our page comparing the various types of liquid level sensors suitable for water level controllers, and find out why we chose probes for this innovative, industry-leading system. This is an important part of your management system, and you don’t want to settle for less than the best on this decision. With our 100% satisfaction guarantee, you truly are making a worry-free decision.



Enclosure: 8-3/4” X 10-1/2” X 6” including the hinge and the latch. For indoor and outdoor use.


Sensor assembly: Option A; use the “spark plug type sensors” or Option B; for deionized or demineralized water we can supply a Stainless Steel Float switch for the holding tank. We will need the Sensor Form filled out and returned in this case. In both applications the sensors should never need to be replaced because of the way we power the sensor system.


Electrical: This unit can be supplied with 220VAC, 110VAC or 24VAC and it has Relay Contacts rated 30AMPS at 250Volts and Dry Contacts rated 0.5AMPS at 60Volts.


WaterLine Controls is a user friendly product that is easy to install and monitor. It connects into the building management system. It is used as a low water or cut-off device.




Browse our Controler Models


Enclosure: 8-3/4” X 10-1/2” X 6” including the hinge and the latch. For indoor and outdoor use.
Sensor assembly: 3” diameter and 20” long.
Electrical: Controls operate at 0.5AMPS at 110VAC Internal Relay Contacts rated 30AMPS at 250Volts Dry Contacts for BAS are rated 0.5AMPS at 60Volts.
The Sensor is Intrinsically Safe.

Liquid level controls & water level controls: Water level controls for cooling towers, Boilers and holding tanks. Each Model is different.
  • BLC3205

    BLC3205

    BLC3205 – Burner ON-OFF/DELAYS AND AUTO TEST – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level. Delays of 15 seconds for OFF and 30 seconds for ON are active. Every 10 minutes the Burner is turned off for 90 seconds and tested for water level. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3204

    BLC3204

    BLC3204 – Burner ON-OFF/DELAYS – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level. Delays of 15 seconds for OFF and 30 seconds for ON are active. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3302

    BLC3302

    BLC3302 – Fill w/ Burner Off-ON – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Fill and Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level and a FILL button to initiate the FILL command for 30 seconds. Drives Power Relays for Burner and Fill Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3201

    BLC3201

    BLC3201 – Burner ON-OFF – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BMS for measuring Burner “ON/OFF” times and to indicate Power Loss. Drives a Power Relay for Burner. See the Brochure for models, detailed drawings & Options.

  • BLC3303

    BLC3303

    BLC3303 – Fill only – Fill w/ Burner OFF-ON/LOCKOUT – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Fill and Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level and a FILL button to initiate the FILL command for 30 seconds. If the burner is OFF for 90 seconds it is locked out and can only be restarted by pressing the “RESTART” button. Drives Power Relays for Burner and Fill Operation. See the Brochure for models, for detailed drawings and options.

  • BLC3208

    BLC3208

    BLC3208 – Fill Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Fill “ON/OFF” times and to indicate Power Loss. A FILL button to initiate the FILL command for 30 seconds. Drives Power Relays for Fill Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3207

    BLC3207

    BLC3207 – Burner ON-OFF/DELAYS AND AUTO TEST – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level. Delays of 15 seconds for OFF and 30 seconds for ON are active. Every 15 minutes the Burner is turned off for 60 seconds and tested for water level. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3206

    BLC3206

    BLC3206 – Burner ON-OFF/DELAYS AND AUTO TEST – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level. Delays of 15 seconds for OFF and 30 seconds for ON are active. Every 20 minutes the Burner is turned off for 60 seconds and tested for water level. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3209

    BLC3209

    BLC3209 – Burner ON-OFF/lockout Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss and a lockout condition. If the burner is OFF for 30 seconds it is locked out and can only be restarted by pressing the “RESTART” button. Drives a Power Relay for Burner operation. See the Brochure for models, detailed drawings & Options.

  • BLC3210

    BLC3210

    BLC3210 – Burner OFF-ON/lockout Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss and a lockout condition. A test button to force the Burner OFF without needing to lower the water level is provided. If the burner is OFF for 30 seconds it is locked out and can only be restarted by pressing the “RESTART” button. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3211

    BLC3211

    BLC3211 – Burner ON-OFF Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level is provided. Drives a Power Relay for Burner. See the Brochure for models, detailed drawings & Options.

  • BLC3213

    BLC3213

    BLC3213 – Burner ON-OFF/DELAYS AND AUTO TEST – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Burner “ON/OFF” times and to indicate Power Loss. A test button to force the Burner OFF without needing to lower the water level. Delays of 15 seconds for OFF and 30 seconds for ON are active. Every 20 minutes the Burner is turned off for 90 seconds and tested for water level. Drives a Power Relay for Burner Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3214

    BLC3214

    BLC3214 – Fill w/ Fill ON-OFF – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Fill “ON/OFF” times and to indicate Power Loss. A FILL button to initiate the FILL command for 30 seconds. Drives a Power Relay for Fill Operation. See the Brochure for models, detailed drawings & Options.

  • BLC3215

    BLC3215

    BLC3215 – Electronic Water Level Control. Complete Kit Includes two Sensors, 50 ft. Sensor Wire & Controller. Dry contacts to BAS for measuring Drain “ON/OFF” times. Maintains level between two probes (maintains water level at the lowest probe). Drives a Power Relay for the Drain Operation. See the Brochure for models, detailed drawings & Options.