DRAFT - Danfoss Heating for consumers

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Introduction How to use this guide The instructions is divided into six parts: • Introduction • Settings overview • Daily use • Maintenance • Installation • Check Basic principles of application 130 for ECL Comfort 110 Typically, the flow temperature is always adjusted according to your requirements. The flow temperature sensor (S3) is the most important sensor. The desired flow temperature at S3 is calculated in the ECL Comfort controller, based on the outdoor temperature (S1). The lower the outdoor temperature, the higher the desired flow temperature. The motorized control valve (M1) is opened gradually when the flow temperature is lower than the desired flow temperature and vice versa. The return temperature (S4) to the district heating supply should not be too high. If so, the desired flow temperature can be adjusted (typically to a lower value) thus resulting in a gradual closing of the motorized control valve. In boiler-based heating supply the return temperature should not be too low (same adjustment procedure as above). If the measured room temperature does not equal the desired room temperature, the desired flow temperature can be adjusted. The circulation pump, P1, is ON when the desired flow temperature is higher than 20 °C (factory setting) or the outdoor temperature is lower than 2 °C (factory setting). °C (degrees Celsius) is an absolute temperature whereas K (Kelvin) is a relative temperature. 6 VI.KT.G2.02 © Danfoss 05/2007 DH-SMT/DK Definitions Comfort operation Normal temperature in the system controlled by the schedule. During heating the flow temperature in the system is higher to maintain the desired room temperature. During cooling the flow temperature in the system is lower to maintain the desired room temperature. Comfort temperature Temperature maintained in the heating / DHW circuit during comfort periods. Desired flow temperature Temperature calculated by the controller on basis of the outdoor temperature and influences from the room and / or return temperatures. This temperature is used as a reference for the control. Desired room temperature Temperature which is set as the desired room temperature. The temperature can only be controlled by the ECL Comfort controller if a room temperature sensor is installed. If a sensor is not installed, the set desired room temperature however still influences the flow temperature. In both cases the room temperature in each room is typically controlled by radiator thermostats / valves. Desired temperature Temperature based on a setting or a controller calculation. DHW circuit The circuit for heating the domestic hot water (DHW). Factory settings Settings stored in the controller to simplify the setup of your controller the first time. Flow / DHW temperature Temperature measured in the flow at any time. Heating circuit The circuit for heating the room / building. Heat curve A curve showing the relationship between actual outdoor temperature and required flow temperature. Humidity, relative This value (stated in %) refers to the indoor moisture content compared to the max. moisture content. The relative humidity is measured by the ECA 62 / 63. DH-SMT/DK VI.KT.G2.02 © Danfoss 05/2007 47
Frequently asked questions The time shown in the display is one hour off? See the daylight saving time changeover in line 7198. The time shown in the display is not correct? The internal clock may have been reset, if there has been a power break for more than 36 hours. Set time and date. See line 1000. What does the symbol mean? The flow temperature is under influence of room temperature limitation, return temperature limitation, boost, ramping, heating cut-out, DHW priority etc. The room temperature is too low? Make sure that the radiator thermostats do not limit the room temperature. If you still cannot obtain the desired room temperature by adjusting the radiator thermostats, the flow temperature is too low. Increase the desired room temperature (line 3000). If this does not help, adjust the heat curve / desired temperature (line 2000). The room temperature is too high during setback periods? Make sure that the min. flow temperature limitation is not too high. See line 2177. The temperature is unstable? • Check that the flow temperature sensor is correctly connected and in the right place. • If the controller has a room temperature signal (line 3000), check that the Gain is not too high. • Adjust the control parameters (line 6000). The controller does not operate and the control valve is closed? • Check that the flow temperature sensor is measuring the correct value, see ‘Daily use’. • Check the influence from other measured temperatures ( ). How to restore the factory settings? See line 7600. What does P and PI control mean? P control: Proportional control. By using a P control, the controller will change the flow temperature proportional to the difference between a desired and an actual temperature, e.g. a room temperature. A P control will always have an offset which not will disappear over time. PI control: Proportional and Integrating control. A PI control does the same as a P control, but the offset will disappear over time. A long ‘Intgr. time’ will give a slow but stable control, and a short ‘Intgr. time’ will result in a fast control but with a higher risk of oscillations. 46 VI.KT.G2.02 © Danfoss 05/2007 DH-SMT/DK Settings overview Line Page Slope 2175 12 Displace (parallel displacement) 2176 14 Temp. min. (flow temp. limit, min.) 2177 14 Temp. max. (flow temp. limit, max.) 2178 14 Intgr. time (time constant for room temp.) 3015 17 Gain - max. (room temp. limitation, max.) 3182 17 Gain - min. (room temp. limitation, min.) 3183 17 Limit (return temp. limitation) 4030 18 Gain - max. (return temp. limitation - max. influence) 4035 19 Gain - min. (return temp. limitation - min. influence) 4036 19 Intgr. time (time constant for return temp. limitation) 4037 20 Priority (priority for return temp. limitation) 4085 20 Auto-reduct (setback temp. dependent on outdoor temp.) 5011 21 Boost 5012 21 Ramp (reference ramping) 5013 22 Optimizer (optimizing time constant) 5014 22 Based on (optimization based on room / outdoor temp.) 5020 23 Total stop 5021 24 S1 T filter (outdoor temp. filter) 5081 24 Cut-out (limit for heating cut-out) 5179 25 Motor prot. (motor protection) 6174 26 Xp (proportional band) 6184 26 Tn (integration time constant) 6185 26 M1 run (running time of the motorized control valve) 6186 26 Nz (neutral zone) 6187 27 ECA address (choice of room panel / remote control) 7010 29 P1 exercise (pump exercise) 7022 29 M1 exercise (valve exercise) 7023 29 Actuator (gear motor / thermo actuator) 7024 29 DHW prior. (closed valve / normal operation) 7052 30 P1 frost T (frost protection) 7077 30 P1 heat T (heat demand) 7078 31 Standby T (standby temperature) 7093 31 Ext. (external override) 7141 31 Knee point 7162 32 Min. on time (min. activation time gear motor) 7189 32 Daylight (daylight saving time changeover) 7198 32 ECL address (master / slave address) 7199 33 Type 7600 33 Code no. 8300 34 Ver. (version no.) 8301 34 Backlight (display brightness) 8310 34 Contrast (display contrast) 8311 34 Language 8315 35 MOD address (MODBUS address) 8320 35 Factory setting 1.8 0 10 °C 90 °C OFF -4.0 0.0 50 °C -2.0 0.0 25 sec. OFF -15 °C OFF OFF OFF OUT OFF 100 18 °C OFF 80 K 30 sec. 35 sec. 3 K OFF ON OFF GEAR OFF 2 °C 20 °C 10 °C OFF 40 °C 10 ON 15 130 XXXX XXXX 16 10 English 0 Your setting DH-SMT/DK VI.KT.G2.02 © Danfoss 05/2007 7 ✐
Page 1 and 2: *087R9781* *VIKTG202* Danfoss can a
Page 3 and 4: 50 VI.KT.G2.02 © Danfoss 05/2007 D
Page 5: Limitation temperature Temperature
Page 9 and 10: Connecting the room panel / remote
Page 11 and 12: Manual control Select control mode.
Page 13 and 14: How to identify your system type Th
Page 15 and 16: Electrical connections - 24 V a.c.
Page 17 and 18: Installation Mounting the ECL Comfo
Page 19 and 20: Service 8000 Code no. 8300 Display
Page 21 and 22: Knee point 7162 Setting range Facto
Page 23 and 24: DHW prior. (closed valve / normal o
Page 25 and 26: If you want to tune the PI regulati

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