Front View of Walchem WBLW100PNA Boiler Controller
Walchem WCTW100PNB Bleed & Feed Controller – Single Biocide Timer with Flow Switch, Pre-Mounted on Panel Original price was: $1,130.00.Current price is: $989.20.
Back to products
Pulsafeeder LB02SA-VTC1-XXX PULSAtron Series A Plus Metering Pump 6 GPD -150 PSI, 115 VAC, (Dual Manual Control)
Pulsafeeder LB02SA-VTC1-XXX PULSAtron Series A Plus Metering Pump 6 GPD -150 PSI, 115 VAC, (Dual Manual Control) $517.90
Sale
Front View of Walchem WBLW100PNA Boiler Controller
Product Badge
Walchem

Walchem WCTW100PNA Bleed & Feed Controller – Includes Single Biocide Timer, Conductivity Probe & Tee Assembly

Original price was: $869.00.Current price is: $681.40.22% OFF

The Walchem WCTW100PNA Cooling Tower Controller provides automated conductivity control for cooling tower water treatment systems. It monitors water conductivity and controls bleed and chemical feed functions to help maintain the desired operating range.

The WCTW100PNA includes a compatible conductivity sensor and inline tee assembly for system installation. It also features programmable biocide control functions for cooling tower treatment programs. Compact and dependable, the Walchem WCTW100PNA is well suited for commercial and industrial cooling tower applications that require automated water chemistry control.

Technical Specifications

Specification Details
Brand Walchem / Iwaki America
Model / Part Number WCTW100PNA
Product Type Cooling Tower Water Treatment Controller
Control Type Microprocessor-Based Conductivity / Bleed and Feed Control
Primary Measurement Conductivity
Primary Function Cooling Tower Conductivity, Bleed, and Chemical Feed Control
Conductivity Sensor Included
Sensor Installation Inline Tee Assembly
Biocide Control Programmable Biocide Timer
Biocide Functions Pre-Bleed, Biocide Feed, and Bleed Lockout
Power Supply 115/230 VAC, 50/60 Hz
Enclosure Rating NEMA 4X
Display Backlit LCD
User Interface Touchpad Controls
Control Outputs Outputs for Cooling Tower Water Treatment Equipment
Mounting Wall / Panel Installation
Typical Applications Cooling Towers, HVAC Water Treatment, Commercial Facilities, and Industrial Cooling Water Systems
Key Features Conductivity Monitoring, Automated Bleed Control, Chemical Feed Control, Programmable Biocide Functions, Sensor and Tee Assembly
Add to wishlist
Item No: WCTW100PNA Category:
Description

Automated Cooling Tower Control with the Walchem WCTW100PNA Controller

The Walchem WCTW100PNA controller provides automated conductivity control for commercial and industrial cooling towers. It monitors cooling water conductivity and controls system bleed based on programmed settings. As a result, operators can maintain more consistent cooling tower water conditions.

Automatic Conductivity and Bleed Control

The Walchem WCTW100PNA controller measures conductivity in the recirculating cooling water. Conductivity provides an indication of the concentration of dissolved ions in the water.

When conductivity rises above the programmed setpoint, the controller can activate the connected bleed equipment. This process removes concentrated water from the cooling tower. Fresh makeup water can then replace the discharged water. Therefore, the system can maintain conductivity within the desired operating range.

Programmable Biocide Control

The WCTW100PNA also includes programmable biocide control functions. Operators can schedule biocide feed cycles based on the requirements of the water treatment program.

In addition, the controller supports functions such as pre-bleed and bleed lockout. Pre-bleed can reduce conductivity before a biocide feed cycle. Meanwhile, bleed lockout helps keep the treatment chemical in the system during the programmed period.

Conductivity Sensor and Tee Included

The Walchem WCTW100PNA controller includes a compatible conductivity sensor and inline tee assembly. These components support installation in a cooling tower water treatment system.

The controller also features a NEMA 4X enclosure and a backlit LCD display. Therefore, operators can monitor and adjust system settings from one convenient control point.

Designed for Cooling Tower Water Treatment

The Walchem WCTW100PNA controller is well suited for HVAC cooling towers and industrial cooling water systems. It can support automated conductivity control, bleed operation, chemical feed, and scheduled biocide treatment.

Available from Water Treatment Supply, the WCTW100PNA provides a practical solution for automated cooling tower water treatment and conductivity management.

Specifications

Physical & Electrical Parameters 

Review the structural, electrical, and control capabilities of the WCTW100PNA control panel: 

Control Logic & Hardware Features

  • Microprocessor Control: Digital signal processing prevents setpoint drift and provides stable sensor calibration.
  • Biocide Feed Modes: Programmable as 28-day cycle, biocide feed with pre-bleed, or bleed lockout to maximize chemical contact time.
  • Relay Output Rating: Mechanical relay contacts engineered to directly switch 115 VAC blowdown valves, metering pumps, and visual alarm beacons.
  • Rugged Design: NEMA 4X heavy-duty housing protects internal electronics against ambient moisture, chemical vapors, and direct splash.

Primary Applications & Use Cases:

  • Commercial HVAC Cooling Towers: Maintains water balance across evaporative condensers and HVAC cooling loops.
  • Industrial Process Cooling: Prevents mineral scaling in heavy industrial heat exchangers and process chillers.
  • Biological Growth & Legionella Control: Automates timed biocide additions to control algae, slime, and bacterial bio-films.
  • Side-Stream Water Conditioning: Controls bleed-off and inhibitor feed in automated closed and open-recirculating fluid systems.

 

Datasheet

Walchem-Controller-Brochure

WALCHEM-CUT-180533_W100-NonCT-Datasheet

WALCHEM-IOM-180531_W100-NonCT-Manual

Replacement Parts

No replacement parts listed for this item yet.

FAQs

FAQs

  1. What comes included with the Walchem WCTW100PNA controller package?
    The WCTW100PNA package comes standard with the NEMA 4X wall-mount control panel, an industrial conductivity sensor probe, a matching inline tee mounting assembly, and the factory instruction manual.
  2. How does the biocide timer lockout function work on this Walchem bleed and feed controller?
    When the biocide timer activates, the controller injects biocide and engages a “bleed lockout” delay. This temporarily holds the blowdown valve closed for a user-set time period, ensuring the chemical has adequate contact time in the tower before automated bleed-off resumes.
  3. Is this WCTW100PNA conductivity controller compatible with standard 115 VAC power lines?
    Yes. The unit features a universal power supply that operates seamlessly on standard 115 VAC or 230 VAC inputs without requiring internal jumper configurations.
  4. Where should the conductivity probe and tee assembly be installed in the cooling tower loop?
    The conductivity probe and inline tee should be installed in a continuously flowing side-stream sample line taken from the pressure side of the re-circulation pump, upstream of any chemical injection points.
  5. Can this Walchem cooling tower controller trigger external alarms?
    Yes. The controller includes configurable output relays that can activate external alarm lights, audible horns, or remote telemetry systems when conductivity exceeds high or low limits.
Reviews (0)

Customer Reviews / Ratings

There are no reviews yet.

Be the first to review “Walchem WCTW100PNA Bleed & Feed Controller – Includes Single Biocide Timer, Conductivity Probe & Tee Assembly”