tekmar Mixing Station 704

Control Description The Mixing Station 704 represents a breakthrough in the design, control and installation of radiant systems. The patent pending design combines a variable speed injection mixing control (RMC), injection circulator, system circulator, and air elimination into a single unit. Extremely versatile, the Mixing Station 704 can be set up to operate as an outdoor reset control, a setpoint control or a delta T limiting control.

Literature	—	D704
Control	—	Microprocessor PID control: This is not a safety (limit) control
Ambient conditions	—	Indoor use only, 32 to 185°F (0 to 85°C), <90% RH non-condensing
Power Supply	—	120 V (ac) +/- 10% 50/60 Hz 720 VA
Var. Pump	—	120 V (ac) 1 A 1/12 hp, fuse T1 A 250 V
Sys / Pmp Relay	—	120 V (ac) 5 A 1/4 hp, pilot duty 240 VA
Boiler Relay	—	120 V (ac) 5 A 1/4 hp, pilot duty 240 VA
Demand	—	24 V (ac) 0.1 VA or Dry contact
Sensors	—	NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
*Included*	—	Outdoor Sensor 070, Universal Sensors 071 and 082

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Literature

Control

Ambient conditions

Power Supply

Var. Pump

Sys / Pmp Relay

Boiler Relay

Demand

Sensors

Included