Hydronics
10 Item(s)
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Johnson Controls Replacement PTC Sensor
Johnson Controls Replacement PTC Sensor with 6-1/2 ft (2 m) LeadsPTC Silicon Sensor$32.02 -
Johnson Controls 3' Cable for Remote Mounting
Johnson Controls WHA29A-600R 3' Cable for Remote MountingThe WHA29A-600R (3 ft cable) allows the user flexibility in connecting numerous S350s remotely in a staging application and/or remote mounting of a display module to display the set point or actual space conditions. If a display module is used, it should be connected at the end farthest from the control.The WHA29A-603R and WHA29A-604R cables can only be used to remote mount display modules.$31.66 -
Johnson 24VAC Single Stage Temperature Control
Johnson A419GBF-1C 24VAC Single Stage Temperature ControlThe A419 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls? output relay On/Off status. The A419 controls are available in 24 VAC or 120/240 VAC powered models. The A419 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 controls are available in either NEMA 1, high-impact plastic enclosure suitable for surface or DIN rail mounting or NEMA 4X watertight, corrosion-resistant surface-mount enclosures.$74.63 -
Johnson Controls Differential Pressure Control
Johnson Controls Differential Pressure Control, SPST Close on decrease in Diff. PressureThese differential pressure controls are for use as operating controls and/or indicating system functions through display lights or panels. They measure the difference in pressure exerted upon its two sensing elements. The controls are available for applications sensing air, oil or liquid. Typical applications are proof of flow across a chiller or water cooled condenser, proof of flow in a heating or cooling coil and lube oil pressure sensing on refrigeration compressors. On a proof of flow application the control measures pressure drop across two different points in either a closed water circulating system or a city water to supply system.
On a proof of flow application in a water chiller system the control activates a light or signal to indicate a loss of water.The control may also be applied as a lube oil pressure sensing control on refrigeration compressors. They may be used in combination with P28 and/or P45 oil pressure cutout controls on two compressor, single motor units to reduce the oil system cost. Special low pressure models are available for variable speed and screw compressor oil pressure applications.
Single and double pole models are available with contacts that open on a pressure differential increase or close on a pressure differential increase. Also available are models with single-pole, double-throw enclosed contacts or with main and separate reverse-acting auxiliary contacts. Controls with lockout feature require manual reset to reclose circuit after lockout. The ?trip-free? reset will not permit restart until reset button is pushed and released. The operation point of the control is readily adjusted by rotating the adjusting disk. The control set points are easily read on a calibrated scale.
$140.57 -
Johnson Controls Remote Bulb Temperature Control
Johnson Controls Remote Bulb Temperature Control, Adj. Diff. 6 to 24F (100 to 240F)Johnson Controls A19 Series temperature controls are designed to cover a broad range of uses for heating and general purpose requirements. Controls have SPST contacts which open on temperature increase or they may be supplied in single-pole, double-throw contact action. Various control ranges are available to cover working temperatures from -30 to 550° F (-34 to 288° C). Closed tank fittings and bulb wells are available for immersion applications. These controls are designed for open low and open high applications. Where critical or high value products are to be maintained within a specific temperature differential, a single control should not be applied to function as both an open low and open high control. In these applications, a separate backup control with alarm contacts should be wired to indicate when the back-up control operates.$74.36 -
Johnson Controls 12 inch long DIN Mounting Rail
Johnson Controls 12 inch long DIN Mounting RailJohnson Controls BKT287-1R DIN Rail Mounting Kit Bracket; System 350; 35MM X 7.5MM; 12" LONG$12.61 -
Johnson Controls Single Stage Digital Temperature Control
Johnson Controls Single Stage Digital Temperature Control (120/240v SPDT)The A419 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls? output relay On/Off status. The A419 controls are available in 24 VAC or 120/240 VAC powered models. The A419 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 controls are available in either NEMA 1, high-impact plastic enclosure suitable for surface or DIN rail mounting or NEMA 4X watertight, corrosion-resistant surface-mount enclosures.$73.90 -
Johnson Controls Temperature Stage Module
Johnson Controls S350AA-1C Temperature Stage ModuleThe S350 Stage Module is used in conjunction with the A350, A350E, A350P, and A350R series temperature controls to add multiple stage capability. The S350 module has an SPDT output relay and three adjustments including offset (de-energize stage action from setpoint), heating or cooling mode, and differential. Using a Y350R, up to nine S350s can be added to the A350, A350E, and A350R via the 5-pin, plug-in connector. Using a Y350R wth an A350P, up to four S350s can be added. Using a 40 VA or greater external transformer wth an A350P, up to nine S350s can be added.$47.40 -
Johnson Controls Hot Water Cutout Temperature Control
Johnson Controls Hot Water Cutout Temperature Control w/ Manual Reset (100-240F)Johnson Controls A19 Series temperature controls are designed to cover a broad range of uses for heating and general purpose requirements. Controls have SPST contacts which open on temperature increase or they may be supplied in single-pole, double-throw contact action. Various control ranges are available to cover working temperatures from -30 to 550° F (-34 to 288° C). Closed tank fittings and bulb wells are available for immersion applications. These controls are designed for open low and open high applications. Where critical or high value products are to be maintained within a specific temperature differential, a single control should not be applied to function as both an open low and open high control. In these applications, a separate backup control with alarm contacts should be wired to indicate when the back-up control operates.$78.07 -
Johnson Controls Digital Temperature Display
Johnson Controls Digital Temperature DisplayThe Johnson Controls D350AA-1C Digital Display Module is used in conjunction with the A350, A350E, A350P, and A350R series temperature controls. A .35 in 3-digit LCD display provides continuous read-out of the actual space temperature. By pressing and holding the setpoint button for three seconds, the actual setpoint can also be displayed. Used for temperature indication (local or remote) in conjunction with any A350.
Features
The D350AA-1C includes a display of actual space temperature and setpoint, a remote display mounting with WHA29A cable (up to 50 ft), and snap-together, 5-pin connector for easy instalation.
$97.77
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