ICE81Q Solar Controller for Solar Thermal Hot Water Heating

Prewired & Preprogrammed, Simply Plug and Play

Product Overview

The ICE81Q is a versatile controller designed for solar thermal and heating systems, offering precise temperature measurement (accuracy ±0.1°C) and control for a single collector and storage tank. With a user friendly keypad, and allowing up to 3 pumps for different zones, such as a pool, spas, radiators, hot water heated towel rails, ring mains, etc., it ensures efficient management of 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

• 6 sensor inputs for temperature and flow monitoring

• 1 input for Grundfos Direct Sensor™ (VFS)

• 1 input for rotary vane type electronic flow meter (FRT)

• 1 PWM variable frequency output (switchable to 0-10V) for high-efficiency pump control

• Available in 1.5 kW, 3 kW, and 4 kW versions

• Durable ABS plastic housing with IP41 protection

• Wall-mounted design with a separate keypad for easy operation

Technical Specifications

Inputs

• 1x Pt1000 sensor (≤500°C, silicon cable ≤280°C) for collector

• 5x NTC10K B3950 sensors (≤135°C, PVC cable ≤105°C) for tank

• 1x rotary vane type electronic flow meter (FRT)

• 1x Grundfos Direct Sensor™ (VFS)

Outputs

• 1x semiconductor relay (max. current 1A)

• 2x electromagnetic relays (max. current 2A)

• 1x electromagnetic relay (max. current 2A)

• 1x potential-free extra-low voltage relay (on/off signal)

• 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

• Keypad: 120 x 120 x 18 mm

• Controller (1.5 kW version): 187 x 128 x 46 mm

• Controller (3 kW or 4 kW version): 218 x 165 x 55 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

• Backup Heating (HK): Suitable for 1 unit (<1.5 kW)

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)

• 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 or VFS flow meters

• Thermal Energy Measurement (OHQM): Measures heat output (e.g., in kWh)

• Unit Switch (UNIT): Toggle between Celsius and Fahrenheit

• Parallel Relay (OPARR): Relay synchronisation for auxiliary devices

• Factory Reset (RST): Restore default settings

• Password (PASS): Secure access control

Safety and Convenience

• Blocking Protection (BLPR): Prevents system lockup

• 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 controller with a separate keypad for flexible installation

• Ideal for solar thermal systems with a single collector and tank

Additional Information

• Operation: 10 push buttons on the front cover for intuitive control