Heating Ventilation Air Conditioning (.PDF)

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Introduction 1. Introduction The predominant application for heating, ventilation and temperature control with KNX is in the area of roomoriented temperature control or individual room temperature control. By detecting the actual temperature value and specifying a respective temperature setpoint with a control algorithm, the thermostat sends a control value to the actuator. This actuator controls a heating or cooling unit that changes the room temperature. The prerequisite is a water-based heating and cooling system. KNX generally has no infl uence on this centrally controlled system. Some manufacturers already provide KNX-based solutions for communication between the individual rooms and the central control unit, e.g. Buderus and Viessmann. As these are manufacturer-specifi c solutions, we will not be referring to them in this application manual. However, the range of KNX-based products and solutions for HVAC applications continues to grow. Many innovations are expected in the near future in this fi eld. It is useful to undertake preliminary considerations when planning a project. This includes the selection of the devices as well as the control and special functions. 1.1. Selection of the devices and the required control and special functions HVAC-control with ABB i-bus ® is characterised by a high level of fl exibility. This includes a large range of individual devices, the control and special functions as well as their combination possibilities. 4
Introduction The following devices and functions are available: Device selection – Overview of KNX sensors for room temperature control – Room thermostat without display – Room thermostat with display – Overview of KNX actuators for room temperature control – Room thermostat with electromotor valve drive – Room thermostat with electrothermal valve drive – Blower convectors (Fan Coil Units) – <strong>Ventilation</strong> Control functions – Timer control – Occupancy control Special functions – Temperature control with blower convectors and temperature detection independent of KNX thermostats – Temperature control with window contacts – Additional HEATING/COOLING stages – Communication between electromotor valve drives – Maintenance of blower convector fi lters – Valve purging 5
Page 1 and 2: ABB i-bus ® KNX Application manual
Page 3 and 4: Table of content Preface/General ..
Page 5: Preface/General General ABB i-bus
Page 9 and 10: Device selection 2.2. Overview of K
Page 11 and 12: Device selection 2.2.2.4. Room Ther
Page 13 and 14: Device selection Busch-priOn ® 1-f
Page 15 and 16: Overview of KNX actuators for room
Page 25 and 26: Blower convectors (Fan Coil Units)
Page 31 and 32: Ventilation 5.2.2. Step speed contr
Page 33 and 34: Control functions 6. Control functi
Page 35 and 36: Control functions First of all a ti
Page 37 and 38: Control functions If the value 1 is
Page 39 and 40: Control functions Realization with
Page 41 and 42: Control functions Here you can see
Page 43 and 44: Control functions COOLING: Temperat
Page 45 and 46: Special functions Fig. 46: RDF/A 1.
Page 47 and 48: Special functions 7.4. Communicatio
Page 49 and 50: Special functions 7.6. Valve purgin
Page 51 and 52: Checklist ❏ Electrical radiators
Page 53 and 54: Checklist Superior manual operation
Page 55 and 56: Checklist Security functions ❏ Be
Page 57 and 58:
Notes 55
Page 60:
Contact www.abb.com/knx Note: We re
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