ICE258W Solar Controller for Solar Thermal Hot Water Heating

Prewired & Preprogrammed, Simply Plug and Play

Product Overview

The ICE258W is a wifi controller designed for solar thermal systems, supporting a single collector and storage tank. With a temperature measurement accuracy of ±0.1°C, support for both conventional and high-efficiency (HE) pumps, and intuitive operation via 6 buttons, it provides precise control for circulation pumps and backup heating systems.

Key Features

• High-precision temperature measurement (±0.1°C)
• Supports 1-10 collectors and 1 storage tank
• 4 relay outputs for pump and backup heating control
• 5 sensor inputs, including 1 for a rotary vane type electronic flow meter (FRT)
• 1 PWM variable frequency output (switchable to 0-10V) for high-efficiency pump control
• Compatible with both conventional and high-efficiency pumps
• Durable ABS plastic housing with IP41 protection
• Wall-mounted design for easy installation

Technical Specifications

Inputs

• 1x Pt1000 sensor (≤500°C, silicon cable ≤280°C) for collector
• 4x NTC10K B3950 sensors (≤135°C, PVC cable ≤105°C) for tank
• 1x rotary vane type electronic flow meter (FRT)

Outputs

• 2x electromagnetic relays (max. current 1A)
• 1x semiconductor relay (max. current 1A)
• 1x electromagnetic relay (max. current 10A)
• 1x PWM variable frequency output (switchable to 0-10V)

Power and Environmental

• Power Supply: 100–240V AC, 50/60 Hz
• Power Consumption: <2.5W
• Rated Impulse Voltage: 2.5 kV
• Ambient Temperature: -10°C to 50°C
• Protection Rating: IP41 (indoor use)
• Housing: ABS plastic, wall-mounted
• Waterproof Grade: IP41

Physical Dimensions

• Controller: 187 x 128 x 46 mm

Temperature Measurement

• Accuracy: ±0.1°C
• Collector Temperature Range: -10°C to 220°C
• Tank Temperature Range: 0°C to 110°C

Pump and Heating Compatibility

• Circulation Pump: Supports up to 3 pumps (conventional or high-efficiency)
• Backup Heating (HK): Suitable for 1 unit (<1500W)

Main Functions

Heating and Pump Control

• Timed Heat: Backup heating with time scheduling
• Circle: Hot water circulation control
• Load: Tank loading setup
• Collector (COL): Collector control for solar thermal systems
• Pump: Pump control mode (e.g., speed regulation via PWM for HE pumps)
• Cooling (COOL): Cooling function for temperature regulation
• Auxiliary (AUX): Additional customizable functions

System Management

• Date: Date and time settings
• Flow Meter Selection (FS): Configurable for FRT flow meter
• Unit Switch (UNIT): Toggle between Celsius and Fahrenheit
• Factory Reset (RST): Restore default settings
• Password (PASS): Secure access control

Safety and Convenience

• Blocking Protection (BLPR): Prevents system lockup
• Thermal Disinfection (OTDI): Ensures hygienic water treatment
• Trouble Protection: Automatic fault detection
• Trouble Checking: Diagnostic tools for system issues
• Manual Mode (MAN): Manual override for testing or setup
• Holiday Mode: Energy-saving mode for extended inactivity
• Screen Protection: Prevents unauthorised access or screen damage

Installation and Compatibility

• Wall-mounted design for easy installation
• Ideal for solar thermal systems with a single collector and tank
• Supports both conventional and high-efficiency pumps

Additional Information

• Operation: 6 buttons on the front cover for intuitive control
• Wifi module for smart automation controls