BW-HE. Roth BW-HE * * Installation Operation Commissioning. Manual

Transcription

1 Roth BW-HE Installation Operation Commissioning * * BW-HE Thank you for buying this product. Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully. EN Manual

2 Safety advice Please pay attention to the following safety advice in order to avoid danger and damage to people and property. Instructions Attention should be paid to valid national and local regulations, standards, directives and safety advice. Target group These instructions are exclusively addressed to authorised skilled personnel. - Only qualified electricians should carry out electrical works. - Initial installation must be effected by qualified personnel named by the manufacturer Subject to changes. Errors excepted. Table of contents Safety advice...18 Description of symbols...18 Information about the product...18 Disposal Overview Installation Mounting Electrical connection Operation and function Adjustment buttons Menu structure Operation User code Display mode Status, measurement values, balance values Balance values Functions and options Messages Troubleshooting Accessories...32 Imprint...32 Description of symbols Information about the product WARNING! Warnings are indicated with a warning triangle! Signal words describe the danger that may occur, when it is t avoided. Warning means that injuries or even danger of life can occur. Attention means that damage to the appliance can occur. Nota Notes are indicated with an information symbol. Proper usage The controller may only be used in the collector circuit of solar thermal systems in compliance with the technical data specified in these instructions. Improper use excludes all liability claims. CE-Declaration of conformity The product complies with the relevant directives and is therefore labelled with the CE mark. The Declaration of Conformity is available upon request, please contact the manufacturer. Disposal Dispose of the packaging in an environmentally sound manner. Dispose of old appliances in an environmentally sound manner. Upon request we will take back your old appliances bought from us and guarantee environmentallyfriendly disposal of the devices. 2

3 1. Overview and technical data Full graphic display with intuitive symbols Up to 3 temperature sensors Pt1000 PWM output for high-efficiency pump Function control Graphic balancing functions The BW-HE is designed for controlling high-efficiency pumps in standard solar thermal systems. The controller has various functions such as speed control, collec tor emergency shutdown, tube collector function and is equipped with the VBus for data communication. 110 Includes: 1 x BW-HE solar controller 1 x collector sensor FKP6 1 x store sensor FRP6 1 x accessories bag Technical Data Housing: plastic, PC-ABS and PMMA Protection type: IP 20 / DIN Ambient temp.: C Dimensions: 173 x 110 x 47 mm Mounting: wall mounting, also suitable for mounting into patch panels Display: full graphic display for visualisation Operation: 3 push buttons at the front of the housing Functions: differential temperature controller with add-on functions. Function control, operating hours counter for the solar pump, tube collector function and heat quantity measurement. Inputs: 3 temperature sensors Pt1000 Outputs: 1 semiconductor relay, 1 PWM output Bus: VBus Power supply: V~ Standby power consumption: 1,94 W Mode of operation: type 1.y Switching capacity: semiconductor relay: 1 (1) A 240 V~ 3

4 2. Installation 2.1 Mounting display WARNING! Always disconnect the controller from power supply before opening the housing! cover The unit must only be located in dry interior locations. It is t suitable for installation in hazardous locations and should t be placed close to any electromagnetic fields. The controller must additionally be supplied from a double pole switch with contact gap of at least 3 mm. Please pay attention to separate routing of sensor cables and mains cables. cable conduit with strain relief fastening push button fuse 1. Unscrew the cross-head screw from the cover and remove it along with the cover from the housing. 2. Mark the upper fastening point on the wall and drill and fasten the enclosed wall plug and screw leaving the head protruding. 3. Hang the housing from the upper fastening point and mark the lower fastening point through the hole in the terminal box (centres 130 mm). Drill and insert the lower wall plug. 4. Hang the housing from the upper fastening point and tighten lower fastening screw. 130 base fastening 2.1 Electrical connection Sensor allocation Tcol (S1) Tstb (S2) Tstt (S3) VBus PWM sensor sensor store, sensor store, ground output collector bottom top Relay allocation PE Pump (R1) Mains N L N L HE pump mains 4

5 HE sensor terminals High-voltage components fuse load terminals control terminals (R1) ground terminals mains terminals Electrostic discharge can cause damage to electronic components. 1 The power supply to the controller must be carried out via an external power switch (last step!) and the supply voltage must be V~ ( Hz). The controller is equipped with 1 semiconductor relay to which the HE pump can be connected: Relay 1 15 = conductor R1 14 = neutral conductor N 13 = ground terminal The terminals marked "PWM" are control outputs for the high-efficiency pump. Pay attention to the polarity of the PWM signal: 9 = ground 1 10 = PWM output The VBus is connected to the terminals marked VBus The temperature sensors (S1 to S3) have to be connected with any polarity to the following terminals: S1 = sensor 1 (sensor collector ) S2 = sensor 2 (sensor store base) S3 = sensor 3 (sensor store top) The mains connection is at the terminals: 16 = neutral conductor N 17 = conductor L 11 = ground terminal Note: If indication is made on the display, this could be caused by different faults. See ch. 7 Troubleshooting for further help. 3. Operation and function 1 forwards 3 SET (selection-/ adjustment mode) 3.1 Adjustment buttons The controller is operated by means of the 3 push buttons below the display. Button 1 is used for scrolling forward through the menu or to increase the adjustment values. Button 2 is similarly used for scrolling backwards and reducing values. Button 3 is used for selection of the menu lines and for confirmation. First of all, adjust date and time. 2 backwards 5

6 3.2 Menu structure 100% 78 C 50 C System ok The controller is operated and controlled via the menu. During rmal operation, the status is displayed. Note: The displayed values and options depend on the functions and only appear if these are available for the adjusted system parameters. Display Description Adjustment range Factory setting Balance/adjust. values Max. s3 heat maximum temperature store, top heat quantity oper. hours R1 operating hours relay 1 oper. days operating days --adjust values:-- Date Time Tstmax maximum store temperature C 60 C DTon switch-on difference 1, ,0 K 5,0 K DToff switch-off difference 0, ,0 K 3,0 K DTset set difference K 10 K Relay mode Off, Auto, Min., Max. Auto --expert:-- DTstmax maximum store hysteresis 0, ,0 K 2,0 K Tstsec store emergency shutdown temperature C 90 C DTstsec store emergency shutdown 0, ,0 K 2,0 K hysteresis Tcolsec collector emergency shutdown C 130 C temperature DTcolsec collector emergency shutdown K 10 K hysteresis collector cooling Yes, No No 6 Tcolmax maximum collector temperature C 110 C DTcolmax maximum collector hysteresis 5, ,0 K 5,0 K collector minimal. minimum collector function Yes, No No Tcolmin minimum collector temperature C 10 C DTcolmin minimum collector hysteresis 0, ,0 K 2,0 K

7 Display Description Adjustment range Factory setting Recooling Yes, No No Frost protection Yes, No No Min. speed minimum speed % 10 % rise rise control K 2 K tube collector Yes, No No interval min 30 min runtime s 30 s start 00: :59 07:00 stop 00: :59 19:00 antifr. type Tyfo LS, Ethylene, Propylene, Propylene Water antifreeze ratio % 40 % FLOWRATE 1, ,0 l/min 3,0 l/min DT too high warning message Yes, No No Non-ret. valve warning message Yes, No No PWM pump characteristic Solar PM 15/80, linear, Off Solar PM 15/80 expert Yes, No No language German, English English 7

8 3.3 Operation Adjustment mode In the adjustment mode, different functions are selected and values are adjusted. Press button 3 for 2 seconds in order to access the adjustment menu. Use button 1 and 2 respectively to select the function to be activated or the adjustment value and confirm with button 3. 0 Storage max. temp. 60 C 90 Adjusting a value: Select the value with button 1 or 2, briefly press button 3; the adjustment range is shown in form of a bar. adjust the selected value with buttons 1 or 2; the value is shown on the bar by means of a slide. Briefly press button 3 to confirm the adjustment. Press button 3 again in order to store the adjustment and to get back to the adjustment menu. If button 3 is t pressed after an adjustment has been carried out, the display changes back after some seconds. The adjusted value will then t be stored. x Yes No Collector cooling: Balance / adjust. values: Collector cooling Tcolmax 110 C Tcolmax 5,0 K Selecting a function or an option: Select a function or an option with button 1 or 2, briefly press button 3. Select Yes in order to activate the selected function, select No to deactivate the function. Briefly press button 3 to confirm the selection. Press button 3 again in order to store the selection. An activated function is indicated by means of a marked checkbox. The corresponding adjustment values are also displayed. In order to access the display mode, keep button 3 pressed for 2 seconds. If button is pressed in the adjustment mode within 2 minutes, the display automatically changes to show the status display. 3.4 User code 1. Expert Code 0077 All display and adjustment values are shown, all adjustments can be altered. In order to enter the user code, scroll down in the submenu balance and adjustment values until you reach the item relay mode, then keep button 2 pressed for 2 seconds. 1 forward 3 2 SET (selection-/ adjustment mode) backward Note: After the menu item user code has been selected, this code must be entered. If the expert user code is t entered, the expert menu will t be displayed. If the expert menu is activated, it will be accessible for 60 minutes. If the controller is restarted, the expert menu cant be accessed. By means of the option Expert, in the expert menu, the expert menu can be permanently enabled. 8

9 4. Display mode 4.1 Status, measurement values and balance values During rmal operation, the status is displayed. Briefly press button 2, measurement and balance values will then be shown. In order to access the adjustment menu, press button 3 for 2 seconds. Status and measurement values display 100% 78 C 50 C System ok In the status and measurement values display, collector temperature, base and top store temperature, pump speed and status are shown. Balance values 100 Collector today In the balance value display, the following temperature courses (in C) are shown one after the other over time. collector today store today collector terday store terday 60 Store today Collector terd Store terd Yields in kwh In this balance value display, the heat yield (in kwh) of the past 7 days is shown. 9

10 4.2 Balance values 167 Operating days kwh Heat 1075 h Operating hours R1 94 C Max. upper storage Maximum store temperature Display of maximum store temperature (at the top, in C) since commissioning or latest reset. Heat quantity Display of heat yield in kwh and MWh respectively since commissioning or latest reset. Operating hours Display of operating hours of the solar pump in h since commissioning or latest reset. Operating days Display of operating days since commissioning forward SET (selection-/ adjustment mode) backward The balance values can be reset in the balance and adjustment menu. Keep button 3 pressed for 2 seconds. This changes the display to show the balance values and adjustment values. Select the balance value which is to be reset with buttons 1 and 2 and briefly press button 3. The value is then reset to Functions and options Store loading DTon adjustment range 1, ,0 K factory setting 5,0 K DToff adjustment range 0, ,0 K factory setting 3,0 K If the adjusted switch-on difference "DTon between collector and store is exceeded, the store will be loaded. If this difference falls below the adjusted switch-off difference "DToff, the loading function will be switched off. Loading of the store will also be switched-off or suppressed if the collector is blocked (see collector minimum limitation) or if the store is at maximum limitation. Store maximum limitation Tstmax adjustment range C factory setting 60 C DTstmax adjustment range 1, ,0 K factory setting 2,0 K If the adjusted maximum temperature Tstmax is exeeded, the loading of the store is stopped. If the store cools down by more than 2 K (hysteresis), the store will be loaded again. Store emergency shutdown Tstsec adjustment range C factory setting 90 C DTstsec adjustment range 1, ,0 K factory setting 2,0 K 10 If the cooling options are activated (e.g. collector cooling), the store will be loaded beyond the adjusted maximum temperature. In order to avoid too high temperatures in the store, the emergency shutdown of the store is additionally provided, which also blocks the store for the cooling options. If the store temperature reaches the adjusted value Tstsec, the emergency shutdown is activated.

11 Collector cooling function collector cooling selection Yes, No factory setting: No TColmax adjustment range C Werkseinstellung 110 C DTColmax adjustment range 5, ,0 K factory setting 5,0 K The collector cooling function starts, when the adjusted maximum collector temperature is reached. If this temperature is underrun by the adjusted hysteresis, this function is switched off. The collector is cooled via heat transfer to the store. The pump output (provided that it is activated) is controlled with maximum relative pump speed. Note: The maximum collector temperature Tcolmax can be 10 K lower than the collector emergency shutdown temperature and 10 K higher than the maximum store temperature (blocking). Collector emergency shutdown Tcolsec adjustment range C factory setting 130 C DTcolsec adjustment range K factory setting 10 K At high collector temperatures (depending on system pressure or antifreeze concentration etc.) the systems stagnates. This means that solar loading is t possible. If the adjusted temperature threshold Tcolsec is exceeded, the collector will longer be used for loading. Collector minimum limitation ColleCtor minimal. selection: Yes, No factory setting: No tcolmin adjustment range C factory setting 10 C DTcolmin adjustment range 0, ,0 K factory setting 2,0 K A collector is considered to be blocked, if it has t reached the adjusted minimum temperature or if the collector blocked condition is fulfilled. Recooling recooling selection: Yes, No factory setting: No If the adjusted maximum store temperature has been reached, the solar pump remains on in order to prevent the collector from being overheated. During this process, the store temperature may increase, but only up to the adjusted store emergency shutdown temperature. In the evening, the system remains on until the store has been cooled down to its adjusted maximum store temperature via the collector and the pipework. Frost protection Frost protection selection: Yes, No factory setting: No As soon as the temperature at the collector is 4 C, the frost protection function operates the loading circuit between the collector and the store in order to protect the medium in the loading circuit against freezing or coagulation. If the collector temperature exceeds 5 C, this function is switched-off. The pump output uses maximum pump speed. 11

12 Antifreeze type antifr. type selection Tyfo LS, Ethylene, Propylene, Water factory setting: Propylene Adjustment channel for the heat transfer fluid used. Antifreeze ratio antifreeze ratio adjustment range % factory setting 40 % Adjustment channel for the glycol concentration in the heat transfer fluid. The concentration of proylene-glycol in the water-glycol mixture should t exceed 50 %. Flow rate Flow rate adjustment range 1, ,0 l/min factory setting 3,0 l/min Adjustment channel for the value (in l/min) read from the window of the FlowCheck (at 100% pump speed). The solar heat quantity calculation uses this value as well as the values entered in the antifreeze type and concentration channels. S1 and S2 are used as the reference sensors (flow/return). Tube collector function tube collector selection: Yes, No factory setting: No interval adjustment range min factory setting 30 min runtime adjustment range s factory setting 30 s start adjustment range 00: :59 factory setting 07:00 stop adjustment range 00: :59 factory setting 19:00 This function helps overcome n-ideal sensor position with some tube collectors and compensates for the delayed temperature measurement. This function operates within a given time frame ( start and stop ). It activates the collector circuit pump for 30 seconds (adjustable via the parameter runtime ) every 30 minutes at collector standstill (adjustable via the parameter interval ). If the collector sensor is defective or if the collector is blocked, this function is suppressed or switched-off. The collector circuit is operated at minimum pump speed. Speed control Min. speed adjustment range % factory setting 10 % DTset adjustment range K factory setting 10 K rise adjustment range K factory setting 2 K 12 The controller is equipped with a PWM output for controlling a high-efficiency pump. Relative pump speed is adapted in 1%-steps to the current temperature difference between collector and store bottom. The parameter "DTset is used as a set value for pump speed control. The parameter rise determines at which change of temperature difference ( rise divided by 10) the speed will be increased. In some cases, it is necessary to increase the factory setting of the minimum pump speed (10%).

13 Relay mode Relay mode selection Off, Auto, Min., Max. factory setting Auto In this menu, the relay can be set into different modes: Off Auto Min. (minimum speed) Max. (maximum speed) If "Off", "Min." or "Max." is selected, the symbol will be shown on the status display. Pump characteristic PWM selection Solar PM 15/80, linear, Off factory setting Solar PM 15/80 High-efficiency pumps convert the PWM signal in different ways and independently of the speed measured by the controller and indicated on the display. At 90% pump speed, pumps with the Solar PM characteristic provide additional power (booster function). Pumps with a linear characteristic have continuously increase in power. 6. Messages In the case of an error, a message is shown in the status display. If there are several messages, only the message having the highest priority is shown in the status display. All other recently detected errors and messages respectively are listed above the balance values (keep button 3 pressed for 2 seconds). Defective sensors broken Defective sensors are shown in the status display. 0% broken Error S1 defect. The defective sensor is indicated: If the cable of a temperature sensor is broken, broken is displayed, if the cable of a temperature sensor is shortcircuited, short is displayed. Warning n-return valve n-ret. valve selection Yes, No factory setting No Warning DT too high DT too high selection Yes, No factory setting No This message is shown if between 10 p.m. and 5.00 a.m. a store is loaded. The alam message is released, when the condition mentioned above is fulfilled for at least 1 minute. This prevents the alarm message from being released by short-term disturbances. This message is shown, if solar loading has been carried out for a period of 20 minutes with a differential higher than 50 K. 13

14 7. Troubleshooting No indication is made on the display. Pump starts for a short moment, switches-on/off again,etc. Check the power supply. Is it disconnected? The fuse of the controller could be blown. It can be replaced after the front cover has been removed (spare fuse is enclosed in the accessory bag). Check the supply line and reconnect it. Is the temperature difference at the controller too small? Wrong position of the collector sensor? Change Ton and Toff correspondingly. o.k. Pump is overheated, but heat transfer from the collector to the store, flow and return have the same temperature; perhaps also bubble in the lines Plausibility control of the tube collector function Mount the collector sensor at solar flow (warmest collector output); use the immersion sleeve of the respective collector. Air in the system? Is the collector circuit blocked at the dirt trap? Vent the system; in crease system pressure to at least static primary pressure plus 0,5 bar; if necessary increase the pressure, switch the pump on and off for a short time Clean the dirt trap The temperature difference between the store and the collector increases ermously during operation; the collector circuit cant divert the heat. Collector circuit pump defective? Check / replace it Pump starts up very late. Heat exchanger calcified? Switch-on-temperature difference Ton too large? Decalify it Non-ideal position of collector sensor (e.g. flatscrew sensor instead of sensor in immersion sleeves?) Change Ton and Toff correspondingly Activate tube collector function if necessary. o.k. Heat exchanger blocked? Heat exchanger too small? Clean it Replace with correctly sized one 14

15 Stores cool down at night. Does the collector circuit pump run in the night? At night, the collector temperature is higher than the outdoor temperature. Check controller. Check the n-return valve in flow and return pipe with regard to the functional efficiency. Sufficient store insulation? Increase insulation. Insulation close eugh to the store? Are the store connections insulated? Replace insulation or increase it. Insulate the connections. Warm water flow upwards? Change connection and let the water flow sidewards or through a siphon (bow downwards); less store losses w? a Check the n-return valve in warm water circulation- o.k. The solar circuit pump does t run although the collector is significantly warmer than the store. Does the control LED flash? Does the pump start up in manual operation? The gravity circu lation in the circulation line is too strong; insert a stronger valve in n-return valve or an electric 2-port valve behind the circulation pump; in pump operation, the 2-port valve is open, other wise it is closed, conect pump and 2-port valve in parallel; activate circulation again! Is the pump current released by the controller? b Further pumps which are connected to the solar store must also be checked. Clean or replace No current; check fuses / replace them and check power supply. The adjusted temperature difference for starting the pump is to high; choose a value which makes more sense. Is the pump stuck? Does warm water circulation run for a very long time? o.k. Use the circulation pump with timer and switch-off thermostat (energy efficient circulation) Turn the pump shaft using a screwdriver; w passable? Circulation pump and blocking valve should be switched-off for 1 night; less store losses? a Check whether the pumps of the after-heating circuit runs at night, check n-return valve; problem solved? b Are the controller fuses o.k.? Replace the fuses. Pump is defective - replace it Controller might be defective - replace it. 15

16 8. Accessories Sensors Our product range includes high-precision platinum temperature sensors, flatscrew sensors, cylindrical clip-on sensors and other temperature sensors, also as complete sensors with immersion sleeve. Overvoltage protection device In order to avoid overvoltage damage at collector sensors (e.g. caused by local lightning storms), we recommend installing the overvoltage protection SP10. Flowmeter If you wish to carry out a heat quantity measurement, you need a flowmeter for measuring the flow rate in your system. 16

17 17

18 18

19 19

20