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Viessmann 7439 304 SCU 224 Solar Control Unit

Viessmann

Item SKU - 7439304

EDP - 964329

Out of stock

Electronic differential temperature control with one differential setting, 2 collector sensor and 2 tank sensors.

Illuminated digital readout (in F or C) with user-friendly menu operation capable of managing two collector field and

two domestic hot water storage tanks, 2 control relay outputs, 4 sensor inputs, and 10 system configurations.

Communicates via Vbus with optional equipment.

4-1/4 inches wide - 6-3/4 inches high - 1-3/4 inches deep

Viessmann 7439 303 SCU 124 Solar Control Unit

Viessmann

Item SKU - 7439303

EDP - 962900

Out of stock

Electronic differential temperature control with one differential setting, 1 collector sensor, and 2 tank sensors.

Illuminated digital readout (in F or C) with user friendly menu operation capable of managing one collector field and

one domestic hot water storage tank, 2 control relay outputs, 4 sensor inputs, and 3 system configurations.

Communicates via Vbus with optional equipment.

4-1/4 inches wide - 6-3/4 inches high - 1-3/4 inches deep