BF-M170G Split Solar Water Heating System Controller (for Pressurized and Non-Pressurized Systems)

BF-M170G is a full-featured hot-water system controller in which one main unit controls the entire system. Two control panels (wired remote controllers) can be connected in series at the user end for remote adjustment of the main unit.

The product integrates three function groups: water-filling control (low-water filling, temperature-controlled filling, timed filling, and manual filling), heating control (timed auxiliary heating, heat-collection circulation, and manual heating), and return-water control (timed and manual return water), covering various hot-water system control requirements.

For both major types of hot-water systems—pressurized-tank solar systems and non-pressurized solar systems with water-level control—users can freely define the product's control application through parameter settings.

The installation position of the [Water Inlet Valve] determines the system's water-filling mode. Through parameter settings, users can select cold-water inlet at the collector or cold-water inlet at the tank.

Get a quick overview of product features and applications

BF-M170G is a full-featured controller for the entire hot-water system. It supports 1–4 additional wired remote controllers installed in different locations as needed. Four remote controllers are connected in series using HX2.54-3P data communication cables and then connected to the main unit, creating a more convenient control system.

• Three 10K NTC thermistor temperature inputs and one water tank level sensor input:

• T1. Water tank temperature sensor input:

• T2. Heat collector plate temperature sensor input;

• T3. Pipe insulation temperature sensor input;

• W1. Water level sensor input.

• Output

• ◆ Electric heating output, load power AC220V, 2KW;

• ◆ Differential temperature circulation pump output, rated load: AC220V, 200W;

• ◆ Pipeline circulation pump (or water pressure booster pump) output, load rating AC220V, 200W;

• ◆ Water supply booster pump output, rated load: AC220V, 200W

• Timing Clock

• 24-hour clock

• Timing range

• 00:00 - 23:59 (hours: minutes)

• Measurement range

• Temperature range: -19 to 99°C

• Water level measurement range: 0%, 20%, 50%, 80%, 100%

• Set Range

• Heating temperature setting: 0 ~ 85 ℃

• Full-tank water level setting range: 50%, 80%, 100%

• Control Range

• Heating temperature control range: 0 ~ 85 ℃

• Full-tank water level setting range: 50%, 80%, 100%

• Other Parameters

• The temperature sensor cable can be extended up to 100 m using ordinary wire

• Setting parameters Power down Long-term memory retention

• Temperature control Water temperature control range: 10 ~ 80 ℃

• Temperature difference control range of the heat collecting plate: 4 ~ 30 ℃

• Tank temperature range for stopping differential-temperature circulation: 55～99℃

• Temperature control range: 20 ~ 50 ℃

• Antifreeze cycle temperature control range: -10 ~ 10 ℃