DELTA DORE - Service Manuals

Delta 125 Numeric Chronoproportional Temperature Regulator

Complete installation and operation manual for the Delta 125, a numeric chronoproportional temperature regulator designed for external electric heating systems. This modular control unit comprises 8 modules of 17.5mm width and operates on 220V AC power with a maximum consumption of 7VA. The regulator supports simple and double heating configurations with optional temperature limiting. Technical specifications include a 5A, 220V inverse polarity output relay, external sensor and limiter with 1000 ohms resistance at 25°C, and operating temperature range from 5 to 40°C. The workshop manual covers installation procedures for external sensors, mounting the control unit on DIN rail, wiring connections, and detailed configuration settings. It includes programmable parameters for day and night setpoints, limiting thresholds, temperature offset values, and timing base configuration. The device provides visual feedback through electroluminescent diodes and seven-segment LED displays showing external temperature, limit temperature, calculated percentage, and various operational modes. Essential for technicians maintaining heating control systems and engineers setting up proportional temperature regulation in industrial and residential installations.