Vector TEF Manual

TEF
PI Controller and Thermostat
Applications
• Individual PI-control of the temperature in rooms that are heated or cooled with 2-pipe systems or 4-
pipe systems using spring return fan coil valves.
• Cost efficient control of pressure dependent VAV units.
• Positioning of an on/off actuator by using the running time of the actuator
• Controlling the temperature output of a simple air-handling unit with one heating or cooling coil.
• Radiator or floor heating, cooling ceiling.

General Description

The TEF is a stand-alone electronic temperature controller with one PI control loop. It features 1 PI sequence
and 2 binary sequences. The TEF features 1 NTC temperature sensor input. One additional function is the
manual positioning of a floating actuator.
The TEF features 2 binary outputs (Relays). A detailed parameterization is possible with the use of a simple
configuration routine. The TEF can be configured using the standard operation terminal. No special tools or
software is required.
Ordering
Item Name Description/Option
TEF Compact PI controller 1 TI internal & external, 2 DO (Relays)
TEM Compact PI controller 1AI, 1 TI int & ext, 1 AO
Selection of actuators and sensors
Temperature Sensors: Use only our approved NTC sensors to achieve maximum accuracy. Recommended is
SDA-Tn10-20 as Duct sensor, SRA-Tn10 as Room sensor and SPA-Tn10-10 as immersion sensor.
Floating Actuators: Any actuators with less than 250 VAC, 100W are acceptable. Actuators with constant
running time are preferred for optimum functionality.
Binary auxiliary devices: E.g. pumps, fans, on/off valves, humidifiers, etc. Do not directly connect devices that
exceed 250 VAC, 100W.
V1.3a, 20100504
Subject to alteration
Features
• Controller: Floating point temperature controller and positioner
• On/Off thermostat for 4-pipe or 2-pipe systems with fan function.
• Temperature control depending on room or return air temperature
• Integrated room temperature sensor
• Programmable user and control parameters
• Minimum, maximum set point limitation
• Enable/Disable change of set points and heating/cooling changeover
• Temperature display in Celsius or Fahrenheit
• Selectable Frost protection
• Operating Voltage 24V
© Vector Controls GmbH, Switzerland
PI Thermostat TEF
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