Warrick Controls and Low-Water Cutoffs

Boiler Controls & Accessories | Boiler Supplies

Warrick level controls on BoilerSupplies.com include conductivity based liquid level controls, from the Series 16 open board module to the Series 67 multi-function control. The Series 26 and 26M low-water cutoffs are among them. Probes in the vessel sense the level, so there are no floats or moving parts in the water. Most orders replace a control already in a panel. Read the series and part number from the label on the old control, note its mounting form, and order or call.

About Warrick Liquid Level Controls

Warrick conductivity controls are a product line of Gems Sensors. Warrick controls sense liquid level in boilers and tanks with stationary electrodes: the liquid completes a circuit between the probes and the control switches a relay.

BoilerSupplies.com lists the Warrick Controls family on one page. The conductivity based liquid level controls are the Series 17, Series 19MR, Series 47 and Series A and AM. The Series 16 is an open board control module and the Series 16M is a plug-in control module. The Series 26 open board and Series 26M plug-in modules are the low-water cutoff controls. The DF Series liquid level control, the Series 67 multi-function level control and the Series 1 electromechanical controls complete the list.

Key facts

BoilerSupplies.com lists the Warrick Controls family, including the Series 67 multi-function level control.
A Warrick conductivity control senses liquid level with stationary electrodes and switches a relay.
A conductivity control has no floats or moving parts in the vessel.
Warrick Series 26 and Series 26M are the low-water cutoff controls, in open board and plug-in forms.
Warrick conductivity controls are a product line of Gems Sensors.

Is a Warrick low-water cutoff the same as an LWCO, a probe control or a level relay?

LWCO is short for low-water cutoff, and among the Warrick controls on BoilerSupplies.com that means the Series 26 and Series 26M. Probe control, electrode control and level relay are broader names for a conductivity level control, and such a control is not always a low-water cutoff. Go by the series on the label, not by the name used in the boiler room.

How does a Warrick conductivity level control work?

A Warrick conductivity control uses the liquid itself as part of an electrical circuit. Stationary electrodes are set at the levels to be sensed. Liquid reaching a probe completes the circuit and the control switches a relay. Nothing floats or moves inside the vessel.

How does a Warrick open board control differ from a plug-in module?

Open board and plug-in module are two mounting forms of the same kind of Warrick control. The Series 16 and Series 26 are open board, and the Series 16M and Series 26M are plug-in. A replacement is ordered in the form the old control had.

What is on the label of a Warrick control that the order needs?

The label on a Warrick control carries the series and the full part number. Copy both exactly as printed, and add the mounting form, open board or plug-in. A photo of the label and of the wiring to the control covers the rest.

Which Warrick series is the low-water cutoff?

The Warrick Series 26 and Series 26M are the low-water cutoff controls. The Series 26 is the open board form and the Series 26M is the plug-in module. BoilerSupplies.com lists both in its Warrick Controls family.

Read the series and part number off the old control, photograph the label and the wiring, and call BoilerSupplies.com at 1-770-957-9599 or toll free 1-800-780-3776.