RVD110 / RVD130 District Heating and Domestic Hot Water Controllers Basic Documentation Edition 4.0 Controller series D CE1P2381E 27.05.
Siemens Building Technologies AG HVAC Products Gubelstrasse 22 CH-6301 Zug Tel. +41 41 724 24 24 Fax +41 41 724 35 22 www.landisstaefa.com © 1999 Siemens Building Technologies AG Subject to change 2/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110 / RVD130 CE1P2381E 27.05.
Contents 1 Summary ....................................................................................................... 11 1.1 Brief description and key features ................................................................. 11 1.2 Type summary............................................................................................... 11 1.3 Equipment combinations ............................................................................... 11 1.3.1 Suitable sensors .....................
.3.1 Types of sensors............................................................................................20 4.3.2 Handling faults ...............................................................................................20 4.4 Room temperature (A6) .................................................................................21 4.4.1 Types of sensors............................................................................................21 4.4.2 Handling faults .................
11 Function block Space heating ....................................................................... 32 11.1 Operating lines .............................................................................................. 32 11.2 Compensating variables ................................................................................ 32 11.2.1 Outside temperature...................................................................................... 32 11.2.2 Room temperature..........................
12.5 Minimum limitation of the flow temperature ...................................................43 13 Function block Actuator room heating ...........................................................44 13.1 Operating lines...............................................................................................44 13.2 Mode of operation ..........................................................................................44 13.3 Control process.............................................
16 Function block D.h.w. actuator 1 ................................................................... 55 16.1 Operating lines .............................................................................................. 55 16.2 Mode of operation.......................................................................................... 55 16.3 Control process ............................................................................................. 55 16.4 Setpoint boost........................
19.3.1 General ..........................................................................................................63 19.3.2 Maximum limitation with heating operation ....................................................64 19.3.3 Maximum limitation with d.h.w. heating .........................................................64 19.4 Maximum limitation of the return temperature differential (DRT) ...................65 19.5 Integral action time of the limit functions..............................
22.3.1 Mounting location .......................................................................................... 77 22.3.2 Mounting methods ......................................................................................... 77 22.3.3 Installation ..................................................................................................... 77 23 Engineering ................................................................................................... 78 23.
Glossary In this Basic Documentation, the following specific terms are used: Heat source, heat generation Pumps Term Explanation Heat converter Heat exchanger that, on the primary side, is connected to the district heat network and that, on the secondary side, delivers the hot water to a common flow. Several consumers, such as zone controllers, are connected to the common flow. Heat exchanger Heat exchanger that delivers the heat directly to the consumers (e.g. space heating, d.h.w. heating, etc.).
1 Summary 1.1 Brief description and key features • RVD110 / RVD130 are multifunctional district heating controllers for flow temperature control of heating circuits and for the control of d.h.w. heating • Their exclusive field of use are plants with district heat connection in smaller residential and nonresidential buildings • The RVD110 has 3 plant types preprogrammed, the RVD130 has 8.
− Outside sensor QAC32 (sensing element NTC 575 Ω at 20 °C) • For the room temperature: Suited are PPS-compatible temperature sensors. The following type is presently available: − Digital room temperature sensor QAA10 • For the d.h.w. temperature and the secondary flow temperature of the heat exchanger: − Strap-on temperature sensor QAD22 − Immersion temperature sensor QAE22... 1.3.2 Suitable room units • Room unit QAW50 • Room unit QAW70 1.3.
2 Use 2.1 Types of plant The RVD110 / RVD130 are suited for all types of in-house plants that • are connected to a district heat network • use weather- or room temperature-compensated flow temperature control • have the control of d.h.w. heating integrated 2.
Note • Common or separate heat exchangers for the heating circuit and d.h.w. heating • Own 7-day switching program for the release of d.h.w. heating and the circulating pump • Idle heat function in case of instantaneous d.h.w. heating connected to a parallel heat exchanger • Legionella function • Forced d.h.w. charging • Frost protection for the d.h.w. • Selectable priority: Absolute, shifting, or parallel • Manual charging outside the time program • Maximum limitation of the d.h.w.
3 Fundamentals 3.1 Key technical features The controllers offer 2 key technical features: Plant types The RVD110 has 3 plant types preprogrammed, the RVD130 has 8. Section 3.2 ”Plant types” shows them in the form of plant diagrams Plant type RVD110 RVD130 D.h.w. system 1 − z z 2 D.h.w. via storage tank z z 3 D.h.w. via storage tank z z 4 z Instantaneous d.h.w. heating, d.h.w. via second heat exchanger 5 z Instantaneous d.h.w. heating, d.h.w. via second heat exchanger 6 z Instantaneous d.h.w.
3.2.1 Plant type no. 1 N1 B9 A6 B1 Y1 B7 B71 2381S01 M Q1 Heating circuit control without d.h.w. heating 3.2.2 Plant type no. 2 N1 B9 Q1 A6 B1 Q7 Y1 2381S02 M B3 Q3 B71 B7 D.h.w. heating with storage tank, d.h.w. charging via charging pump. Only with RVD130: Circulating pump optional 3.2.3 Plant type no. 3 A6 N1 B9 B3 B1 Q7 Y1 B7 B71 Q1 Y7 2381S03 M D.h.w. heating via storage tank, d.h.w. charging via diverting valve.
3.2.4 Plant type no. 4 N1 A6 B1 B9 Y1 B7 Q1 B71 2381S04 M B3 M Y5 Q7 B71 H5 Separate heat exchangers for heating circuit and d.h.w. heating, instantaneous d.h.w. heating via heat exchanger. Temperature sensor B71 can be used as follows: • As a d.h.w. temperature sensor, or • For maximum limitation of the temperature differential Circulating pump and flow switch optional. Selectable idle heat function. 3.2.5 Plant type no.
3.2.7 Plant type no. 6b N1 A6 B9 B1 M Y1 Q1 B7 Q7 B71 2381S09 Y7 Heat exchanger for the heating circuit, d.h.w. heating via the district heat primary circuit, control of the d.h.w. temperature via an electrothermal actuator. Circulating pump optional. For information, refer to section 14.5 ”Plant type no. 6b”. 3.2.8 Plant type no. 7 A6 N1 B9 Q1 Y5 B1 Q3 Q8 B3 F1 B71 Y1 B7 2381S07 M M B71 2 heat exchangers connected in series, 1 for the space heating circuit and 1 for d.h.w.
Legend for plant types no. 4...8: A6 B1 B3 B7 B71 B9 F1 H5 N1 Q1 Q3 Q7 Q Y1 Y5 Y7 Room unit Flow temperature sensor heating circuit (plant types no. 4...6) or common flow (plant types no. 7+8) D.h.w. temperature sensor Primary return temperature sensor Secondary return temperature sensor (plant types no. 4 and 7) or d.h.w. temperature sensor 2 (plant type no. 5) or flow temperature sensor heating circuit (plant type no. 8) Outside sensor D.h.w. thermostat Flow switch Controller Heating circuit pump D.h.w.
4 Acquisition of the measured values 4.1 General In the event of a faulty sensor, the RVD110 / RVD130 always attempt to maintain the required comfort level, even at the expense of certain heat losses, which will not cause any damage however. In the case of severe faults that make it impossible for the RVD110 / RVD130 to ensure control, a fault status message will be delivered. The controller displays this as Er (error). Optional sensors (shown with broken lines) cannot be monitored for open-circuits.
• Plants with no room temperature sensor: The controller operates with a fixed outside temperature of 0 °C A fault status message will be generated only when there is no actual room temperature value available. This is the case when no room unit is used or when the room temperature measuring circuit is faulty: • The controller’s LCD displays Er • When interrogating the outside temperature on the QAW70 room unit – if present – its display will show --- if there is a short-circuit or open-circuit 4.
4.5.2 Handling faults If there is a fault in the sensor’s measuring circuit (short-circuit or open-circuit), a fault status message will be generated. The d.h.w. charging pump or the diverting valve will be deactivated and, in the case of instantaneous d.h.w. heating systems, the respective valve shut. When interrogating the d.h.w. temperature on the QAW70 room unit, its display will show --- if there is a shortcircuit or open-circuit. 4.6 Primary return temperature (B7) 4.6.
fault status message will always be generated. In that case, the controller’s LCD will display Er • When used as a heating circuit flow temperature sensor (plant type no. 8): If there is a fault in the sensor’s measuring circuit (short-circuit or open-circuit), a fault status message will always be generated. The heating circuit’s mixing valve will close and the circulating pump remains activated.
5 Function block End-user space heating This function block contains settings and readouts that are intended for the end-user. 5.1 Operating lines The buttons for selecting the operating lines and for adjusting the settings are described in section 22.1 ”Operation”.
• The heating curve slope is to be set on operating line 5. The setting range is 2.5 to 40, but the effective slope is 10 times smaller. For detailed information, refer to section 11.3 ”Heating curve”. The setpoint of the nominal and the reduced room temperature as well as that for frost protection are to be entered directly in °C room temperature. These setpoints apply irrespective of whether or not the control uses a room temperature sensor.
6 Function block Clock settings 6.1 Operating lines Line 13 14 15 16 6.2 Function, parameter Time of day Weekday Date Year Unit Factory setting Range hh:min d dd.MM yyyy Undefined 1 01.01 2004 00:00...23:59 1...7 01.01. … 31.12. 1995…2094 Entries The RVD110 / RVD130 have a yearly clock with the time of day, weekday and date. The changeover from summer- to wintertime, and vice versa, takes place automatically.
7 Function block End-user d.h.w. heating 7.1 Operating lines Line 17 18 19 20 21 22 23 41 42 Function, parameter Weekday for entering the d.h.w. program Release period 1 start Release period 1 end Release period 2 start Release period 2 end Release period 3 start Release period 3 end D.h.w. normal setpoint D.h.w reduced setpoint Unit Factory setting Range hh:min hh:min hh:min hh:min hh:min hh:min °C °C Current weekday 06:00 22:00 --:---:---:---:-55 40 1...7, 1-7 00:00...24:00 00:00...
8 Function block Display actual value sensors 8.1 Operating lines Line 24 25 26 27 8.2 Function, parameter Room temperature (terminal A6) Outside temperature D.h.w.
9 Function block Standard values and fault indication 9.1 Operating lines Line 49 50 9.2 Function, parameter Reset of operating lines 2...23 (end-user level) Display of faults Unit Factory setting 0 Display function Range 0/1 Reset end-user level If operating line 49 is set to 1, all the current settings on the end-user level (operating lines 2...23) will be cleared. In that case, the factory settings will be used again. Proceed as follows: 1. Select operating line 49. 2.
10 Function block Plant configuration 10.1 Operating lines Line Factory setting Range 51 Plant type 1 52 53 54 Space heating present Use of universal sensor at terminal B71 Flow switch / circulating pump present (offsetting heat losses) Return flow of circulating pump Pump kick Winter- / summertime changeover Summer- / wintertime changeover 1 1 RVD110: 1...3 RVD130: 1...8 0/1 0/1 0 0...3 0 1 25.03 25.10 0...2 0/1 01.01. …31.12 01.01. …31.12 55 56 57 58 10.2 Function, parameter Unit dd.
possible changeover date is March 25. In that case, the date to be entered on operating line 144 is 25.03. If no summer- / wintertime changeover is required, the 2 dates are to be set so that they coincide. 31/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 10 Function block Plant configuration CE1P2381E 27.05.
11 Function block Space heating 11.1 Operating lines Line 61 62 63 66 69 70 71 72 73 74 Function, parameter Heating limit (ECO) Building structure Quick setback with room temperature sensor Adaptation of heating curve Heat gains Room temperature influence (gain factor) Parallel displacement of heating curve Overrun time heating circuit pump Frost protection for the plant Max. limitation of room temperature Unit Factory setting Range K –3 1 1 0 0 10 0.0 4 1 --- --- / –10...+10 0/1 0...15 0/1 –2.
TA (B9) TA 75 / 50 % TAM 2381B04 25 / 50 % k t = 21 h TAD Generation of composite and attenuated outside temperature TA 25 TA 20 TAD 15 TAM 10 2522D17 5 0 t Progression of actual, composite and attenuated outside temperature TA TAD kt TAM t Actual outside temperature Attenuated outside temperature Building time constant Composite outside temperature Time 11.2.
Calculation of the setpoint change ∆wR is made in the steady state according to the following formula: Room authority E 2 ∆wR = × ( wR - xR ) 2462D06 S Effect of room temperature setpoint change on the flow temperature setpoint ∆wR Change of room temperature setpoint s Slope of heating curve ∆wVT Change of flow temperature setpoint The flow temperature setpoint change ∆wVT is calculated according to the following formula: ∆wVT = ∆wR × ( s × 0.1 + 1 ) 11.3 Heating curve 11.3.
A substitute line is needed because the heating curve is slightly deflected. This is required to compensate for the nonlinear radiation characteristics of the different types of radiators. The basic setting is made according to the planning documentation or local practices. The heating curve is based on a room temperature setpoint of 20 °C. 11.3.2 Self-adaptation The heating curve is defined by its slope and a possible parallel displacement both of which are adjustable.
2381B01 / / TRw TAM s H s TVw Generation of setpoint with weather-compensated control without room unit * s TRw TVw TAM H Multiplier Slope of heating curve Room temperature setpoint Flow temperature setpoint Composite outside temperature Heating curve Operating line 5 = setting of heating curve slope Operating line 69 = setting of heat gains Operating line 71 = setting of parallel displacement of heating curve 11.4.
2381B03 / / TRw TAM 1 H s s TRx /2 E 1 s +50 K TVw L -50 K Generation of setpoint with weather-compensated control with room temperature influence * E H L S TAM TRw TRx TVw Multiplier Room authority Heating curve Limiter Heating curve slope Composite outside temperature Room temperature setpoint Room temperature Flow temperature setpoint 11.
• Any room temperature deviation produces an instant parallel displacement of the set heating curve The correlation between the amount of deviation and the extent of displacement is defined by the room authority, which is dependent on − the deviation of the actual room temperature from the setpoint − the set heating curve slope The purpose of the room temperature influence is to exactly reach the respective setpoint during the control process and to maintain it. This type of control operates as PI control.
Depending on the type of plant, ”active” means: Plant type no. 1 2 3 Heating circuit pump Q1 OFF OFF 4 5 6 7 OFF, ON for d.h.w. charging OFF OFF OFF OFF 8 OFF Regulating unit heating circuit CLOSED CLOSED, OPEN for d.h.w. charging CLOSED, OPEN for d.h.w. charging CLOSED CLOSED CLOSED CLOSED, OPEN for d.h.w. charging CLOSED Y... Y1 Y1 Y1 Y1 Y1 Y1 Y1 Y5 The heating circuit pump is deactivated. It can only be activated via frost protection for the plant.
the attenuated outside temperature exceeds the heating limit. The heating will be switched on again as soon as all 3 outside temperatures have dropped below the heating limit by the amount of the switching differential. The heating limit is determined as follows: Heating limit = TRwN + TECO (nominal room temperature setpoint plus ECO temperature). Example A nominal room temperature setpoint wN of +20 °C and an ECO temperature TECO of –5 K result in a heating limit of +15 °C. 11.6.
11.8.1 Mode of operation with outside sensor Frost protection for the plant operates in 2 stages: 1. If the outside temperature falls below 1.5 °C, the heating circuit pump will be switched on for 10 minutes at 6-hour intervals. 2. If the outside temperature falls below –5 °C, the heating circuit pump will be switched on to run continuously. The frost protection stage active at a time will be deactivated when the outside temperature has exceeded the limit value by the switching differential of 1 K. 11.8.
11.10 Pump control 11.10.1 Pump overrun Pump overrun can be set for both the heating circuit pump and the d.h.w. pumps (operating line 72). Setting 0 deactivates pump overrun. 11.10.2 Pump kick The pump kick function is activated for 30 seconds every Friday morning at 10.00. If several pumps need kicking, they are activated one after the other in the order of Q1, Q3 and Q7. The kicks are separated by pauses of 30 seconds. The pump kick is always activated.
12 Function block Actuator heat exchanger 12.1 Operating lines Line 81 82 83 85 86 12.2 Function, parameter Actuator running time, actuator Y1* P-band of control, actuator Y1* Integral action time of control, actuator Y1* Max. limitation of flow temperature Min. limitation of flow temperature Unit Factory setting Range s K s °C °C 120 35 120 ----- 10...873 1...100 10...873 Variable...140 8...
13 Function block Actuator room heating 13.1 Operating lines Line 91 92 93 94 95 96 13.2 Function, parameter Actuator running time P-band Integral action time Setpoint boost for control of the common flow Max. limitation of flow temperature Min. limitation of flow temperature Unit Factory setting Range s K s °C °C °C 120 35 120 10 ----- 10...873 1...100 10...873 0...50 Variable...140 8...
13.6 Actuator pulse lock This function acts on all 3-position actuators controlled by the RVD110 / RVD130. If an actuator has received closing pulses for a total period of time that represents 5 times its running time, additional closing pulses from the controller will be suppressed. For safety reasons, the controller delivers a closing pulse of 1 minute at 10-minute intervals. An opening pulse negates the pulse lock.
14 Function block D.h.w. heating 14.1 Operating lines Line 101 102 103 104 105 106 107 108 109 Function, parameter Release of d.h.w. heating Release of circulating pump (RVD130 only) D.h.w. switching differential Legionella function Setpoint legionella function D.h.w. priority Overrun time charging pump Q3 Overrun time charging pump Q7 Max. time d.h.w. heating 14.2 Unit K °C min min min Factory setting Range 0 1 5 6 65 4 4 4 150 0...3 0...2 1...20 --- / 1...7, 1-7 60…95 0...4 0...40 0...
14.3.3 Release of the circulating pump This function controls circulating pump Q7. Operation of the circulating pump prevents the d.h.w. piping system from cooling down. Operation of the pump depends on the type of plant: • Plant type no. 1 has no circulating pump • With plant type no. 4, the circulating pump runs according to the release given • With plant types no. 2, 3, 6 and 8, the circulating pump remains switched off during d.h.w.
Notes • With pump heating circuits (plant types no. 2 through 7), it can occur that too hot water reaches the heating circuit. Caution should be exercised particularly in the case of underfloor heating systems! A mixing heating circuit (plant type no. 8), by contrast, can lower its flow temperature through mixing • With plant types no. 4 through 6, the space heating circuit and the d.h.w. circuit receive their heat from separate heat exchangers. Shifting priority acts like parallel priority; the demand (d.
14.3.7 Switching the d.h.w. heating off The d.h.w. functions can be deactivated by pressing the button for ”D.h.w. heating ON / OFF” (LED in the button not lit). Frost protection for the d.h.w. remains active and the d.h.w. pump(s) is (are) switched off. Manual d.h.w. heating will be completed, however. 14.4 D.h.w. heating with a storage tank 14.4.1 General D.h.w. heating with a storage tank is covered by plant types no. 2, 3 and 6b (refer to section 14.5 ”Plant type no. 6b”), and 8.
The legionella setpoint (input on operating line 105) will not be restricted by the maximum setpoint of the d.h.w. temperature. The legionella function can only be interrupted by switching off d.h.w. heating altogether. 14.4.5 Protection against discharging of the d.h.w. storage tank With plant types no. 2 and 8, d.h.w. heating features a protection against discharging during pump overrun. These 2 types of plant use 2 separate pumps, 1 for the heating circuit and 1 for d.h.w. heating. With plant type no.
N1 B9 A6 B1 M Y1 B7 B71 Q7 2381S09 Y7 Q1 A6 B1 B7 B71 B9 N1 Q1 Q7 Y1 Y7 Room unit Flow temperature sensor Primary return temperature sensor D.h.w. temperature sensor Outside sensor Controller Heating circuit pump D.h.w. circulating pump 2-port valve for control of the heating circuit 2-port valve with electrothermal actuator for the d.h.w. circuit 14.5.2 Mode of operation 2-port valve Y7 in the d.h.w. circuit has an electrothermal actuator which is controlled by control output Q3 / Y7.
15 Function block Extra legionella functions In d.h.w. systems with storage tanks, the legionella function ensures that legionella viruses will not occur. This is accomplished by periodically raising the d.h.w. temperature in the storage tank. 15.
In the case of direct d.h.w. heating without circulating pump, the set value has no impact (no dwelling time). 15.1.5 Operation of circulating pump The circulating pump can be forced to run during the period of time the legionella function is active. This ensures that hot water also circulates through the plant’s hot water distribution system. Entry (0 or 1) is made on operating line 128. If the storage tank temperature exceeds the legionella setpoit minus 1 K, the circulating pump will be forced to run.
If a maximum d.h.w. charging time has been set, it also acts here. If the legionella setpoint is not reached, the legionella function will be interrupted and resumed on completion of the maximum charging time. The legionella setpoint will not be affected by the maximum of the d.h.w. temperature setpoint. 54/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 15 Function block Extra legionella functions CE1P2381E 27.05.
16 Function block D.h.w. actuator 1 16.1 Operating lines Line 111 112 113 114 115 116 117 Function, parameter Actuator Y5 opening time, d.h.w. mixing valve Actuator Y5 closing time, d.h.w. mixing valve P-band d.h.w. control Integral action time d.h.w. control Derivative action time d.h.w. control Setpoint boost with d.h.w. heating Max. d.h.w. temperature setpoint 16.2 Unit Factory setting Range s s K s S K °C 35 35 35 35 16 16 65 10...873 10...873 1...100 10...873 0...240 0...50 20...
17 Function block D.h.w. actuator 2 17.1 Operating lines Line 121 122 123 124 17.2 Function, parameter Actuator running time, d.h.w. mixing valve Y7 P-band d.h.w. control Y7 Integral action time d.h.w. control Y7 Load limit when flow switch is actuated Unit Factory setting Range s K s % 35 35 35 25 10...873 1...100 10...873 0...60 Mode of operation With plant type no. 5, this function block controls mixing valve Y7 of the secondary d.h.w. circuit.
The use of a flow switch is recommended especially in smaller plants (single-family houses, etc.). Supervision of faults is not possible since both short-circuit and open-circuit are permitted states. Functions that are dependent on the flow switch are the adjustable load limit (subsection 17.4.7 Adjustable load limit) and child-proofing (subsection 17.4.8 Child-proofing). 17.4.4 Offsetting the heat losses In general, the d.h.w. temperature is maintained at a constant level, irrespective of d.h.w.
Setting 3 The aim is to reach the d.h.w. setpoint and all heat losses are fully compensated. A circulating pump must be installed. 17.4.5 Cold water sensor B71 By using a temperature sensor in the d.h.w. return, it is possible to achieve a similar effect as with the flow switch (enhancement of control performance by acquiring the temperatures before the water returns to the heat exchanger). The use of sensor B71 is particularly recommended in larger plants.
This value is a guide value and can vary depending on the plant’s hydraulic layout. It is recommended to start off with the calculated load limit and then • decrease the value if the d.h.w. flow temperature significantly overshoots when d.h.w. is consumed • increase the value if the d.h.w. flow temperature significantly undershoots When the load limit is reached, the control system takes on control of the actuator on the primary side. The end of d.h.w.
17.5.2 Measuring the d.h.w. temperature A sensor or control thermostat is always required. The type of measurement is to be entered on operating line 53. When using a thermostat, consideration must be given to the following criteria: • The free sensor will automatically be assigned to the differential temperature measurement • Frost protection for the d.h.w.
18 Function block Test and display 18.1 Operating lines Line Function, parameter 141 142 Sensor test Relay test 143 145 146 149 150 Display of active limitations Address and identification of device at terminal A6 Contact status at terminal H5 Reset of operating lines 61...123 (heating engineer level) Software version 18.2 Unit Factory setting Range 0 0 0...5 RVD110: 0...5 RVD130: 0...8 Display function Display function Display function 0/1 Display function Mode of operation 18.2.
18.2.
19 Function block Locking functions 19.1 Operating lines Line 151 152 153 154 155 156 157 161 162 163 191 Function, parameter Max. limitation of primary return temperature, constant value Max. limitation of primary return temperature, slope Max. limitation of primary return temperature slope, start of shifting limitation Max. setpoint of return temperature with d.h.w. heating Integral action time, primary return temperature limitations Max. limitation of temperature differential Max.
19.3.
19.4 Maximum limitation of the return temperature differential (DRT) With plant types no. 1 through 4, and 6 and 7, the return temperature differential (difference between primary return and secondary return temperature) can be limited to a maximum, provided the necessary sensor B71 is installed in the heating circuit’s secondary return. If the differential of the 2 return temperatures exceeds the set maximum limit value, 2port valve Y1 in the primary circuit will be throttled.
19.6 Raising the reduced room temperature setpoint The reduced room temperature setpoint can be raised as the outside temperature falls. This ensures that • at low outside temperatures, the required change from the reduced setpoint to the nominal setpoint will not become too great • no peak load will occur during the heating up phase The reduced room temperature setpoint is only raised at outside temperatures below 5 °C. This is not required at higher outside temperatures.
19.8.2 Parameters The waiting time can be adjusted in the range 3…255 minutes, that is, the time between 2 valve opening actions (increment of 10 minutes, operating line 163). Fixed settings: • Opening time: 30 seconds • Stroke: 25 % • Switch-off temperature (only if sensor B7 is present); it lies 5 °C below the d.h.w. setpoint 19.8.3 Mode of operation Cooling down is prevented by opening the 2-port valve in the primary circuit at regular intervals, using fixed settings.
20 Combination with PPS units 20.1 General • PPS units are digital devices for connection to the controller’s PPS (point-to-point interface, terminals A6–MD). The PPS units presently available are the following: − Room units QAW50 and QAW70 − Room temperature sensor QAA10 • The room temperature acquired with the room unit is adopted by the controller. If it shall not be considered by the various control functions, the room authority must be set to zero.
If the room unit overrides the controller’s operating mode, the controller’s operating flashes. mode button 20.2.3 Readjustment of the room temperature The knob of the QAW50 is used for readjusting the nominal room temperature by a maximum of ±3 °C. The adjustment of the room temperature setpoint made on the controller is not affected by the QAW50. The controller generates the setpoint from its own room temperature adjustment plus the readjustment made with the room unit. 20.
Operating mode QAW70 Operating mode of RVD110 / RVD130 Automatic mode; temporary overriding possible with the QAW70’s economy button Economy button off (symbol displayed): Nominal temperature Economy button on (symbol not displayed): Reduced temperature Standby If the room unit overrides the controller’s operating mode, the controller’s operating . mode button flashes 20.3.
20.3.5 Entry of holiday periods Using the QAW70 room unit, the controller can be switched to holiday mode. To be entered is the length of the holiday period in days. The room unit’s LCD displays the entry as follows: • The last weekday of the holiday period is shown on the left (1 = Monday, 2 = Tuesday, etc.) • The number of days of the holiday period is shown on the right The holiday mode starts on the day after the entry is made.
21 Manual operation During commissioning or in the event of fault, manual operation enables the heating plant to be controlled manually. Using the 2 setting buttons, 2-port valve Y1 in the primary return can be driven into any position. The heating circuit pump and d.h.w. pump(s) will run. The controller’s display shows the flow temperature (sensor B1). With plant types no. 4 through 6, the display changes to the d.h.w.
22 Handling 22.1 Operation 22.1.1 General Operating elements 1 5 1 2 2 5 6 7 8 1 3 7 ECO 6 RVD 3 4 2381Z02 7 Front of the RVD130 1 2 3 4 5 6 7 Operating mode buttons Display Line selection buttons for selecting the operating lines Button for manual operation ON / OFF Button for d.h.w.
1 2 7 1 3 2381Z07 ECO Display of the RVD110 Operating instructions Operating Instructions are inserted at the rear of the front cover. They are designed for janitors and end-users. They also contain tips on energy saving and fault tracing. 22.1.2 Analog operating elements Buttons and displays for selecting the operating mode The following operating mode buttons are available: • 3 buttons for selecting the heating circuit’s operating mode • 1 button for d.h.w.
The value set will be adopted • when selecting the next operating line, that is, by pressing a line selection button or • by pressing an operating mode button If entry of --.- or --:-- is required, setting button or must be pressed until the required display appears. Then, the display shows constantly --.- or --:-- . Block skip function The operating lines are grouped as blocks. To select an individual operating line in a block as quickly as possible, the other lines can be skipped.
Level Operating lines Access End-user 1 through 50 Press lines Heating engineer 51 through 150 or , then select the operating Press and for 3 seconds, then select the operating lines 1. Press and together for 6 seconds. Locking functions 151 through 191 2. The display shows Cod 00000. code 3. The code is comprised of 5 buttons: must be pressed in this order. 4. Select the operating lines.
22.3 Mounting 22.3.1 Mounting location Suitable mounting locations are compact stations, control panels, control desks or the heating room. Not permitted are wet or damp locations.
23 Engineering 23.
23.3 Connection diagrams 2381A01 23.3.1 Low-voltage side B3 AC 230 V D1 D2 B9 B7 B3 B71 RVD110 B3 H5 F1 D1 D2 AC 230 V N2 B3 B7 H5 B71 H5 2381A02 B9 RVD130 AC 230 V 2381A03 23.3.
24 Mechanical design 24.1 Basic design The RVD110 / RVD130 are comprised of controller insert, which houses the electronics, the power section, the relays and all operating elements (on the controller front), and the base, which carries the connection terminals. The RVD110 contains 4 relays, the RVD130 contains 7. The operating elements are located behind a cover. At the rear of the cover, there is a slot where the Operating Instructions can be inserted.
25 Technical data Power supply Rated voltage Rated frequency Max. power consumption AC 230 V ±10 % 50 Hz 8.5 VA, 6.5 W, cos ϕ >0.7 Functional data Reserve of clock 12 h Classifications to EN 60730 Software class Mode of operation Degree of contamination A type 1b (automatic controls) normal contamination Detector inputs (B…) Refer to subsection 1.
Particular requirements for temperature sensing controls EN 60730-2-9 Special requirements for energy controllers EN 60730-2-11 Weight Net weight 0.77 kg For setting ranges, refer to the descriptions of the function blocks and the individual operating lines. 82/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 25 Technical data CE1P2381E 27.05.
Index A actuator running time .......................................... 44, 55 adaptation sensitivity................................................. 35 adaptation to the time of year ................................... 58 adjustable load limit .................................................. 58 adjustment ................................................................ 74 analog operating elements........................................ 74 attenuated outside temperature ................................
Locking functions .................................................63 Plant configuration ...............................................30 Second mixing valve ............................................56 Space heating ......................................................32 Standard values and fault indication ....................29 Switching program d.h.w. heating........................27 Test and display...................................................61 Valve actuator heat exchanger ...............
QAW70 operating lines ............................................. 70 quick setback ............................................................ 40 R raising the reduced room temperature setpoint ........ 66 reduced d.h.w. setpoint............................................. 27 reduced room temperature setpoint.......................... 24 reference room.......................................................... 35 relay test ................................................................... 61 relays ...
Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 Index CE1P2381E 27.05.
Alphabetical list of operating lines Function, setting, display Operating line Page 91 81 121 112 111 66 145 44 43 56 55 55 32 61 62 32 128 146 1 52 61 24 42 41 106 103 26 162 15 115 143 50 127 27 27 47 46 28 63 26 55 61 29 52 54 27 3 73 30 28 24 32 Heat gains Heating curve slope Heating limit (ECO) Heating period 1 end Heating period 1 start Heating period 2 end Heating period 2 start Heating period 3 end Heating period 3 start 69 5 61 8 7 10 9 12 11 32 24 32 24 24 24 24 24 24 Idle heat fun
Integral action time d.h.w. control Integral action time d.h.w.
Release period 3 end Release period 3 start Reset of operating lines 2...23 (end-user level) Reset of operating lines 61...123 (heating engineer level) Return flow of circulating pump Room temperature (terminal A6) Room temperature influence (gain factor) 23 22 49 149 55 24 70 27 27 29 61 30 28 32 141 94 116 105 105 150 52 58 61 44 55 52 53 61 30 30 13 126 26 52 53 30 14 17 6 57 26 27 24 30 16 26 S Sensor test Setpoint boost for control of the common flow Setpoint boost with d.h.w.
Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 Alphabetical list of operating lines CE1P2381E 27.05.
Revision history The following changes have been made against edition 3.0: Chapter / section / subsection 1.4 3.1 4 5. 5.1 5.3 6.1 6.2 7 7.1 7.2 7.3 10.1 10.2. 10.3 11.1 11.3.2 11.10.2 13.6 14.1 14.3.1 14.3.2 14.3.4 14.4.3 15 16.4 16.5 18.2.4 18.2.5 19.1 19.3.3 19.8.2 20.3.4 22.1.4 23.3.
/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 CE1P2381E 27.05.
/94 Siemens Building Technologies HVAC Products Basic Documentation RVD110, RVD130 CE1P2381E 27.05.
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