Home » Pentair | 520971 | IntelliChlor COMSYS‑4 Commercial Salt Chlorine Generator System — 4 lb/day Output for Pools Up to ~20,000 Gallons

Pentair | 520971 | IntelliChlor COMSYS‑4 Commercial Salt Chlorine Generator System — 4 lb/day Output for Pools Up to ~20,000 Gallons

Only 1 left
SKU: 520971
(0)
Length: 24 in Width: 24 in Height: 24.5 in
$5,624.99

The Pentair IntelliChlor COMSYS-4 (Model 520971) is a commercial-grade salt-chlorination system designed for pools up to approximately 20,000 gallons (~13,333 US gallons in some listings). It automatically converts dissolved salt into pure chlorine, delivering consistent sanitation while reducing the need for tablet or liquid chlorine products.

Key Features

  • Commercial salt-chlorine generator system (Model 520971)

  • Produces up to 4 lb of chlorine per 24 hour period (via two cells: 1 P + 1 S) 

  • Suitable for pools up to ~20,000 gallons capacity per manufacturer listings 

  • Dual-cell configuration (one primary + one secondary) for redundancy and continuous operation 

  • Self-cleaning titanium-bladed cells with commercial coating for extended life 

  • Built-in diagnostics: cell-life tracking, salt level monitoring, data logging 

  • Pre-plumbed manifold and dual power centers provide simplified installation and professional readiness 

  • Compatible with external ORP/pH control systems (not included) for demand-based chlorine generation 

  • Listed to NSF/ANSI 50 and UL/CSA standards for commercial pool applications 

Product Overview
The Pentair IntelliChlor COMSYS-4 (Model 520971) offers a robust sanitation solution for commercial and large residential pools requiring high output and professional control. With a 4 lb/day chlorine output and dual-cell redundancy, this system ensures uninterrupted sanitization even if one cell requires service.

Engineered for durability and efficiency, the system’s titanium-bladed cells deliver reliable performance in demanding environments, including high usage, salt systems, and extended run times. The pre-plumbed manifold and dual power center configuration streamline installation, while onboard diagnostics and integration with automation systems give you full visibility and control over chlorination levels. Ideal for facility managers, service professionals, and anyone needing elevated sanitation capacity, the COMSYS-4 is designed to deliver clean, safe, balanced water with minimal chemical handling and maximum operational confidence.