KCDb

Transcription

1 Regulator for active air diffusers FUNCTION KCD is an electronic room regulator with LONTALK communications for control of active air diffusers in e.r.i.c. and erimix systems. KCD has factory-set, adjustable digital set points values these can be modified on site using the operator panel KOP. KCD can control cooling and heating in sequence. QUICK FACTS Intended for Swegon active air diffusers and the erimix system Can control supply air diffusers and exhaust air terminals with equal or different air flows Up to 8 air diffusers with the same regulator Can control the switching on/off of lighting Can control radiator valves 0-10V DC or thermo-actuator Can regulate temperature, occupancy and CO2 levels LONMARK approved Enclosure class IP 30 or IP 54 Registered design. The company reserves the right to make design changes without prior notice. 1

2 DESIGN (See figure 1) KCD is available in two variants, unenclosed in enclosure class IP 30, or enclosed with cable glands in enclosure class IP 54, as a special option this can be fitted with a connector (module connector) for operator panel KOP. MATERIALS AND SURFACE TREATMENT All plastic parts are completely PVC free and are generally made of ABS-plastic. ACCESSORIES Room unit KST for temperature measurement and setting the set point value and connecting the operator s panel. Occupancy sensor KSO, CO 2 -sensor KSC and operator panel KOP for modifying/setting data. INSTALLATION KCD can be fitted in an optional position in the climate-conditioned area, above the suspended ceiling or directly on air diffuser s plenum box. KCD has a DIN-rail mounting and screw holes. KCD with enclosure is screwed to an optional surface. PLANNING A comprehensive planning guide that describes the overall e.r.i.c. concept is given in the technical section. KCD is designed to control active air diffusers and requires a constant pressure in connecting duct. The regulator controls with this the air flow to the served room, and in doing establishes the required room climate depending on which units are connected. The regulator can control up to 8 air diffusers with the same air flow, with more than 4 diffusers a special connection is required, where groups of 4 diffusers have there own cable to the controller. The radiator valve output can also be used for exhaust air regulation, in this mode the output for the thermo-actuator is still used for radiators. In the erimix system the regulator is connected via the LON network to the pressure and mixing box regulator KZM so that the right mixing temperature is set for the supply air. The system is blocked via communications so that unintentional cooling or heating cannot occur. COMMISSIONING KCD is normally supplied configured with damper positions adapted to the air diffuser s characteristics and is pushed into the connecting duct. Reprogramming can be done using the operator panel KOP or via the LON network with the help of LONMAKER for Windows or similar program. MAINTENANCE Dirty products may only be cleaned by wiping or vacuum cleaning. DECLARATIONS The product is CE marked. CE declaration and Environmental Product Declaration are available from our website. Standards: Conforms to LONMARK Interoperability Guidelines and LONMARK Functional Profile: VAV Controller. Figure 2. Room regulation. Legend to the figure 1. Diffuser regulator KCD 4. Room unit KST 4 2. Active supply air diffuser 5. Occupancy sensor KSO 3. Active exhaust air terminal device 6. CO 2 -sensor KSC Figure 1. KCD in enclosed or unenclosed designs. 2

3 Operating mode The regulator can adopt a number of different operating modes, for example, comfort, economy or shutoff mode. Control of the operating mode can be done via the LON network or with the help of the occupancy sensor KSO. In freestanding operations, i.e. not controlled from the LON network, operating mode switching can be performed between Comfort/Economy with the occupancy detector KSO. The shutoff mode can only be obtained with a switch, e.g. a window switch. Further information about different operating modes can be found in the Regulator Manual, chapter Economy mode This operating mode can be obtained through: Control signal from the LON network (ncimanocccmd=standby) The dead zone between heating and cooling is increased, no air quality control in this mode. The values 19 resp 25 and the min/max positions on the air damper and radiator valve are adjustable using the operator panel KOP. 1. Comfort mode This operating mode can be obtained through: Occupancy sensor indicating occupancy Control signal from the LON network (ncimanocccmd=occupied) The bypass button has been activated on room unit KST 4 The regulator is not connected to the LON network and does not have an occupancy sensor The diagram shows the output signal to the air damper and radiator valve on the vertical axis; the heating and cooling requirement is shown on the horizontal axis. The values 21 resp 23 and the min/max positions on the air damper and radiator valve are adjustable using the operator panel KOP. Figure 4. Economy mode. 3. Unoccupied This operating mode can be obtained through: Control signal from the LON network (ncimanocccmd=unoccupied) Occupancy sensor indicating no occupancy (20 min delay) The dead zone between heating and cooling is further increased, no air quality control in this mode. The values 16 resp 28 and the min/max positions on the air damper and radiator valve are adjustable using the operator panel KOP. Figure 5. Unoccupied. Figure 3. Comfort mode. 3

4 Shutoff This operating mode can only be obtained through: Window switch or the like breaking the signal to the regulator The air flow is completely closed. Heating takes place through frost protection mode at 10, the value is adjustable using the operator panel KOP. Figure 6. Shutoff. 5. Morning heating This operating mode can only be obtained through: Control signal from the LON network (ncimanocccmd = HVAC_MRNG_WRMUP) The regulator opens the air damper completely for quick heating in the morning, presupposes over-conditioned supply air. 6. Night cooling This operating mode can only be obtained through: Control signal from the LON network (ncimanocccmd = HVAC_NIGHT_PURGE) The regulator opens the air damper fully for free cooling, presupposes under-conditioned supply air. Detailed information can be found in the Regulator Manual, chapter Emergency mode This operating mode can only be obtained through: Control signal from the LON network (nciemergcmd) The regulator opens/closes the air damper depending on the value of the control signal. Detailed information can be found in the Technical Manual, chapter Legend to the figures 3, 4, 5 and 6 1. Maximum flow 5. Cooling with air 2. Minimum flow 6. Air quality control 3. Heating with radiator 4. Neutral zone 7. Frost protection heating with radiator 4

5 CONNECTION KCD is connected to a 24 V AC supply and is fuse protected with max 6 A. Connection to LONTALK and other components is done as set out in the wiring diagram. Electrical data Input voltage 24 V AC -10% +20%, Hz Operation of KOP connected via the > 23 V AC controller requires Power consumption: Regulator with operator panel KOP 4 VA Digital outputs max. 12 VA In total max. 16 VA Ambient temperature: Operation 0 C +50 C Storage 20 C +50 C Humidity max. 90% RH, non condensing Input for CO 2 -sensor Z1: Measurement range 2-10 V DC Accuracy ±0,05 V Output for diffuser/radiator, Y1-Y2: Output voltage range 0-10 V DC Maximum amperage 2 ma Thermo-actuator heat V1 24-1,5V max 0,8 A Accuracy ±0,2 V Network protocol LONTALK Channel TP/FT-10, 78 kbps Neuron type 3150, 10 MHz Wire cross-section requirements Supply voltage (24 V AC) with max fuse 6 A requires 1.5 mm 2. Signal wiring from connected units max 30 m requires 0.7 mm 2. Connection to LONTALK TP/FT-10 Free Topology Channel should be made using twisted pair cable. Terminal block description No. Designation Description 1 C1 TP/FT-10 Communication channel 2 C2 See above 3 X3 Input, window switch 4 M Measurement zero 5 X2 Input, occupancy sensor KSO 7 M Measurement zero 8 Z1 Input, CO 2 -sensor KSC, 0-10 V DC 9 D1 Output, display on room unit KST 10 M Measurement zero 11 X1 Input, bypass button on room unit KST 12 R1 Input, set point value adjustment on room unit KST 13 M Measurement zero 14 B1 Input, temperature sensor 15 G 24 VC AC (G)-input 16 G0 24 VC AC (G0)-input 17 OP 24 VAC supply voltage to Xenta OP 18 G 24 VAC supply voltage to Xenta OP 19 V1 Thermo-actuator heat 24 V max 0,8 A 20 G 24 VC AC (G)-output 21 G0 24 VC AC (G0)-output 22 Y2 Output active air diffuser 0-10 V DC 23 M Measurement zero 24 Y1 Output heat regulation/exhaust air 0-10 V DC 27 K1 Input phase for lighting 230 V AC 28 KC1 Output broken phase for lighting Terminal 6, 25 and 26 Are not used 5

6 Figure 7. Wiring diagram. Legend to the Wiring diagram 1. Diffuser regulator KCD 2. Room unit KST 4 3. Active air diffuser 4. Occupancy sensor KSO 5. Window / door switch 6. CO 2 -sensor KSC 7. Radiator valve or exhaust air terminal device 8. Lighting 230 V AC (max 2A) 9. Thermo-actuator for radiator 6

7 Lonmark objects and network variables The figure below shows the standard objects applicable for KCD. Not all these network variables are used for the applications managed by KCD. Further information about the use of variables can be found in the commissioning instructions for the e.r.i.c. system and in the Technical Manual. All documents are available for download from our website. The regulator is LONMARK -approved. xif-files are available for download from our website. 7

8 DIMENSIONS ORDER KEY Product designation Diffuser regulator -aa Enclosure: O = unenclosed K = enclosed KM = enclosed with modular connector for KOP For factory setting state: Diffuser type supply air/exhaust air, size, min/max air flow rate and duct pressure. Also state what the regulator will be used for: air quality control with CO 2 sensor occupancy control window switch control radiator control 0-10 V or thermo-actuator erimix system product rating Figure 8. KCD O unenclosed. Accessories Also see the separate catalogue sheets for respective accessories. Room unit KSTa -a Model: 0, 2 or 4 Occupancy sensor CO 2 -sensor KSOa KSCb Figure 9. KCD K enclosed. SPECIFICATION EXAMPLE Example of the specification text according to VVS AMA. RE XX Swegon electronic regulator for active air diffusers type which is included in the e.r.i.c. system with the following functions: Intended for Swegon active air diffusers Can control supply and exhaust air with equal or different air flows Can control heating radiators Can control the switching on/off of lighting Intended for the erimix system LONTALK -connection LONMARK -approved Accessories: Room unit KSTa -a xx items Occupancy sensor KSOa xx items CO 2 -sensor KSCb xx items Operator s panel KOPa Type: O xx items K xx items etc. State the following: Diffuser type and size and duct pressure and accessories and rating. 8