INSTALLATION AND MAINTENANCE MANUAL GROUND SOURCE HEAT PUMP WITH DC INVERTER (SPLIT TYPE) MODEL: BWB-SS-7 (DC) BWB-SS-9 (DC) BWB-SS-12 (DC) BWB-SS-15 (DC) - Please Read This Manual Before Using The Heat Pump -
1 Contents System description Principle of BWB-SS-DC heat pump ..................... 2 Unit General Description ...................................... 3 Operation Principle of BWB-SS-DC ..................... 3 General information for the installer Transport and storage ............................................ 4 Installation .............................................................. 4 Guideline values for collectors .............................. 4 Inspection of the installation ..................
System description 2 Principle of BWB-SS-DC heat pump BWB-SS-DC series heat pump can exploit the energy contained in natural heat sources. Or, to put it differently, the heat pump 'collects' heat energy from the heat source. The heat from the heat source (rock, soil, lake) is taken up via a closed collector system in which a mixture of water and antifreeze circulates; ground water can also be used as a heat source.
3 System description Unit General Description In order to get the best result from the climate system BWB-SS-DC series, you should read through the section for the system manager in these installation and maintenance instructions; BWB-SS-DC is the ground source heat pump with DC inverter; it is a climate system for heating houses and apartment buildings as well as industrial properties.
4 General information for the installer Transport and storage Inspection of the installation The BWB-SS DC series must be transported and stored upright and dry. The BWB-SS DC series may however be carefully laid on its back when being moved into a building. Current regulations require the heating installation to be inspected before it is commissioned. The inspection must be carried out by a suitably qualified person and should be documented. The above applies to closed heating systems.
5 Pipe connections General Pipe installation must be carried out in accordance with current norms and directives. The heat pump can operate up to a return temperature of about 58* °C and an outgoing temperature of about 70* °C from the heat pump. The compressor produces up to 65* °C, the rest is obtained using additional heating. The other heat pumps has a max return temperature of approximately 50 °C and an outgoing max temperature from the heat pump of approximately 60 °C.
6 Pipe connections Pipe connections (heating medium) NOTICE! 1. in line filter on the return line; Pipe connections for the heating medium side are located at the top of indoor unit. All required safety devices, shut-off valves (as close to the heat pump as possible), and particle filter (supplied) are fitted. When connecting to a system with thermostats on all radiators, a relief valve must be fitted, or some of the thermostats must be removed to ensure sufficient flow. 2.
7 Pipe connections Pump capacity diagrams, heating medium side Available pressure BWB-SS-7 (DC) kPa WILO RS-25/6 80 70 60 50 40 30 20 10 0 1 2 3 Flow 0 0.22 0.66 0.88 1.10 1.32 1.54 1.76 l/s 1.54 1.76 l/s 1.96 2.24 BWB-SS-9 (DC) BWB-SS-12 (DC) Available pressure WILO RS-25/8 kPa 80 70 60 50 40 30 20 10 0 0.44 1 2 3 Flow 0 0.22 0.44 0.66 0.88 1.10 1 .32 BWB-SS-15 (DC) Available pressure WILO RL-25/7.5 kPa 80 70 60 50 40 30 20 10 0 2 Tillgängligt tryck 1 3 Flow 0 0.
Pipe connections How to adjust the rate of flow WILO RS-25/6 The pump is adjustable to adjust the flow: 1, 2, or 3. WILO RS-25/8 The pump is adjustable to adjust the flow: 1, 2, or 3. WILO RL-25/7.5 The pump is adjustable to adjust the flow: 1, 2, or 3.
9 Pipe connections Pump capacity diagrams, collector side Available pressure BWB-SS-7 (DC) BWB-SS-9 (DC) BWB-SS-12 (DC) BWB-SS-15 (DC) kPa 80 70 60 50 40 30 20 10 0 WILO RS-25/8 1 2 3 Flow 0 0.22 0.44 WILO RS-25/8 0.66 0.88 1.10 1.32 1.54 1.76 l/s The pump is adjustable to adjust the flow: 1, 2, or 3. Connection of the power cord Five core cable ( 2.5mm2 x 2.
Electrical connection 10 Connecting The Room Temperature Sensor WTT RT OCT + + Room temperature sensor Room temperature sensor RT=Room temperature sensor Connecting The Outside Temperature Sensor WTT RT OCT + + Outside air temperature sensor Outside air temperature sensor OCT=Outside air temperature sensor Connecting The Outside Temperature Sensor WTT RT OCT + + WTT WTT=Water tank temperature sensor
WTT FEED From Water Tank Temperature Sensor From Water feed Temperature Sensor WF HDO From Electrical heater 1 From Electrical heater 2 From Electrical heater 3 From External relay signal control port From MAIN PCB / CN15 PO PQ N EH3 N From Outside Air Temperature Sensor From Electrical heater GND From From Compressor GND From 2.
WHITE 4 2 8 BLUE 6 3 RE BROWN 3WV 1 5 7 BLACK BLACK BLACK BLUE BLUE BLACK L V CM P6 W P3 U L CN614 P1 P1 PO RAT PQ BLUE YELLOW 5 COT CN15 CN24 CN2 CN9 CN27 CN 36 CN22 CN23 5 EV BLUE EH 1 EH 2 WHITE BLACK CN 4 CN 5 CN10 CN1 WHITE F1 [ 15A ] F2 [ 15A ] 4 MAIN PCB EXPANSION VALVE WHITE BLACK CN 27 PCB2 CN 14 BLACK BROWN BLUE Cn11 N(AC)-OUT CN8 CN4 CN6 CN17 NO BROWN BLACK WCP BLACK BLACK T6 T5 T4 T3 CN 15 CN21-N T1 4WV T2 NO C
BLUE 4 6 2 8 3 RE 3WV 1 5 7 BLACK BLACK BLACK BLUE BLUE WTP2 WTP1 BLACK SB WCP W CT BLACK U V BLACK RED BROWN BLACK YELLOW CN614 PO PQ A C CN4 CN2 CN13 CN12 CN15 C CN120 CN6 B N CN16 A B CN11 CN10 5 RETURN WTT FEED ROOM GWIT GWOT WHITE BLACK WHITE RED RED CN27 CN 36 CN22 CN23 CN15 CN24 T1 5 EV EXPANSION VALVE CN 4 CN 5 EH 3 EH 1 3 2 1 CAP 5 EH 2 L1 60uf 4 PTC RED CN 11 BLUE F3 [ 15A ] F1 [ 15A ] F2 [ 15A ] 4 PCB2 CN 14 OUTDOOR MAIN PCB
Commissioning and adjusting Preparations Before starting up the system, check that the heating, collector and hot water circuits are full and thoroughly vented. Check the pipe system for leakage. Filling and venting the collector system 14 the container with tap water until it emerges from the return hose without being mixed with air. 10. Stop machine, heat medium water pump stop running.
15 Commissioning and adjusting Inspection Adjust the brine and the heating medium pump 1). Read the brine temperatures on the panel. The difference between these two temperatures should be 2—5 °C when the system has come into balance. Adjust the flow with the knob on the brine pump (32). A high difference indicates a low brine flow. A low difference indicates a high brine flow. The pump is adjustable to adjust brine flow.
Control panel 16 Layout Left button Up button Display Right button MONDAY 11:30 W. T.
17 Control panel Functions The control computer is operated with the help of a user friendly menu system that is displayed on the control panel. There is a main menu and several sub-menus accessible from the main menu. The menus are described in detail further down. To be able to select the desired menu and increase or reduce preset values, you will use the five buttons. The right-hand button on the control panel is used to open the desired menu.
Control 18 General information Menu Navigation The right-hand button on the control panel is used to open the desired menu. The left-hand button is used to return to the previous menu. The up and down buttons are used to navigate between the parameters of a menu. A cursor (arrow) on the left-hand side of the display indicates which menu can be opened. The up and down buttons are also used if you wish to increase or reduce a preset value.
19 Control Menus INTEGRAL Integral is a program to set the startup time and distance between compressor and electrical heater, to set stop conditions of compressor and electrical heater. This program is depends on the "feed water temperature degeneratiaon" and Time. COMPRESSOR A -60᧤0᧥ ADD1 500᧤-60᧥ TIMESETTING To set Time, year, month, date, and week; electrical heater timing, water tank heating timing, whole unit timing.
Control 20 Menus ADD.HEAT ᧤ON or OFF᧥ ON᧶select ON, electrical heater is running normally. OFF᧶select OFF, only switch off electrical heater᧨the others are running normally. If you wish to change operating mode: a. Open the main menu INFORMATION by pressing the right-hand button once. You will find the cursor at the sub-menu named OPERATION. b. Open the OPERATION menu by pressing the right-hand button once. You will find the cursor at the previously selected operating mode. c.
21 Control Menus Sub-Menu TEMPERATURE This menu shows the different temperatures of the heating system. All temperature changes registered over the last 60 minutes are stored in the control system and can be viewed in the shape of graphs. TEMPERATURE OUT ROOM WARMWT FEED. RETURN BR . IN BR . OUT 25 22(27) 45(53) 30(65) 30 30(-8) 32 CMPDIF TEMP CONSTANT 6 6 OUT˖Display outdoor ambient temperature.
Control 22 Menus Integral (DM) is a program to set the startup time and distance between compressor and electrical heater according to heat demand and heat output, to set stop conditions of compressor and electrical heater. This program is depends on the "feed water temperature degeneratiaon" and Time. To enter this menu operator can change the factory setting: Menu Text OFF CMP.A ADD1 ADD2 ADD3 * Description When the value (testing) reaches the value setting by user, the system will be closed.
23 Control Degree Minute s(DM) instruction Before the Degree Minute reach - 60 (adjustable) ,the compressor is off, but when the Degree Minute reach - 60 (adjustable) ,the compressor automatic start, and the flow temperature will begin increase. (Higher than desired temperature) when the actual water supply temperature reach / higher than the desired temperature, the DM will be changed. For example : the DM was cumulated to -160 in this time.
Control 24 The relationship between compressor and DM T=T1-Ts+2 ć +1.0 +0.5 0 -1 0 1 2 -2 3 -3 4 -4 5 -5 6 -6 7 -7 8 9 After compressor start running, when ‘setting return water temperature – actual return water temperature constant temperature setting, and the electrical heater does not start, then enter constant temperature control The temperature and its frequency during constant temperature program.
25 Control Menus Sub-Menu TIMESETTING How to enter the Sub-Menu TIMESETTING: You need to choose the " TIMESETTING" on the main menu ( INFORMATION). Press the right button. Then " TIMESETTING" menu can be seen.
Control 26 Menus Sub-Menu SETTING SETTING EMERGENCY 1 EMERGENCY 2 STERILAZE ADD START ADD DELAY ADD DIF TEMP HDO OFF OFF ADD ENFORCE WATER PUMP OFF ON 40 30M 4 EMERGENCY1 (ON or OFF) Emergency mode 1˄emergency 1˅:˄ON or OFF˅ˈfactory setting is OFF(after select emergency mode, the unit will continuously execute the same objective (room heating only, water tank heating only, or auto) When select ON, compressor will be switch off, only electrical heater, water pump or other temperature protection are a
27 Control Menus ADD START : ( 10 to 65 degree adjustable , factory setting is 40 degree ) Electrical heater start water temperature, it is adjustable from 10 - 65°C, factory setting is 40°C, this means when compressor heat the water temperature over 40°C, then allow the electrical heater to start, this setting is for energy-saving and water tank heating (WARMWATER) only.
Control 28 Menus Description Adjustable by HEATPUMP Total operating hours of heat pump since installation. Operating time will not be reset to zero. can not ADD Total operating hours of auxiliary heater 1 (3kW) since installation. Operating time will not be reset to zero. Total operating hours of auxiliary heater (6kW) since installation. Operating time will will not be reset to zero. Menu Text ADD2 ADD3 * Total operating hours of auxiliary heater (9kW) since installation.
29 Control Adjustments to be made regularly Sub-Menu LANGUAGE LANGUANG Language selection : ENGLISH How to enter the Sub-Menu of LANGUAGE: DEUTSCH You need to choose the "LANGUAGE"on the Main menu ( INFORMATION ). Press the right button. Then "LANGUAGE"menu can be seen. Use Up and Down button to select the language , and press Right button to confirm. Most settings will be made by the installation contractor in connection with installation.
Control 30 Adjustments to be made regularly CURVE is program that adjusts feed water temperature according outdoor ambient temperature, factory setting is ambient temperature 0ć as feed water temperature 40ć, that is CURVE =40; the value of CURVE is adjustable from 22ć to 56ć.
31 Control Adjustments to be made regularly If you wish to change the ROOM value: 1 Press the ”up” or ”down” button once to open the ROOM value for adjustment. 2 Increase or reduce the preset value using the ”up” or ”down” button so that the desired room temperature is reached. Wait for 10 seconds or press the left-hand button once to return to the main menu. When enter ‘Room heat’ mode, user could control compressor and electrical heater through regulate heat curve or DM (degree minute).
Control 32 Adjustments to be made regularly Adjustment of Part of the Heat Curve At outdoor temperatures between -5°C and +5°C part of the heat curve may need adjusting if the indoor temperature does not stay at the preset ROOM value. For this reason, the control system includes a function adjusting the curve at three outside temperatures: -5°C, 0°C, +5°C. This function will allow you to increase or reduce the feed line temperature, without affecting the heat curve, at three specific outdoor temperatures.
33 Control Adjustments to be made regularly Adjustment of the MIN and MAX value The MIN and MAX value is the lowest respectively highest value that is allowed for the supply line temperature. Adjusting the minimum and maximum supply line temperature is particularly important if your home has floor heating. If your house has floor heating and parquet floor, the supply line temperature should not be higher than 45°C. Else the floor might get damaged.
Control 34 Adjustments to be made regularly 5 Press the ”down” button to move the cursor to HIGH T STOP or LOW T STOP. 6 Open the selected parameter by pressing the right-hand button once. The cursor moves to HIGH T STOP or LOW T STOP. 7 Raise or lower the value, using respectively the ”up” or ”down” button. 8 Press the left-hand button three times to return to the main menu.
35 Control Maximum Return Line Temperature The maximum return line temperature, i.e. temperature of the water returning from the heating system, should be adapted to each individual installation. The correct temperature value for your system will be entered by your installation contractor in connection with installation and can be adjusted later. Warm Water Production The temperature of the water distributed to the water heater is controlled by the regulating pressure switch and cannot be adjusted.
Control 36 Regular Checks Checking the Brine Level of the Brine System The Brine system must be filled with the correct volume of brine. Otherwise the heat pump unit risks being damaged. Brine system liquid (brine) must be added if the brine level gets so low that it is no longer visible in the expansion vessel. Level is too low Level is correct first month of operation the brine level might sink a little, which is quite normal.
37 Control Alarm Messages In the event of an alarm message, try to re-start the unit with the safety switch. If this does not work, try to solve the problem with the help of the table below. Call your installation contractor if you need help. See ”References” on page 39.
Control 38 Alarm Messages The cause of alarm ‘IPM MODULE’ could be: 1ǃThe communications between Module and outdoor main circuit board is jamming; 2ǃModule is jamming and can not detect current or compressor; 3ǃModule can not start compressor; 4ǃModule’s rated 15VDC voltage is not steady 5ǃModule’s current overload˗ How to do: 1. Please check if all terminals connections among circuit boards were good, whether some of the wire damaged; 2.
39 Control Alarm Messages 6. check the if DC voltage between A(first wire) and B(third wire) is normal, it should be 13.5V ~16.5V A B The cause of alarm ‘TRANSITION-MAIN COMMUNICATE’ could be: 1. The connection between transition circuit board and main circuit board is wrong; 2. The connection between transition circuit board and main circuit board is not good, such as had creepage; 3. The transition circuit board or main circuit board was damaged. How to do˖ 1.
Control 40 Alarm Messages The cause of alarm ‘CMP TOP OVER’ could be: 1. Water flow was not enough; 2. Refrigerant was not enough 3. Ambient temperature was too high; How to do: 1. Check if the water flow was not enough, so that the heat exchange efficiency was not good; 2. Check the refrigerant quantity, and make sure the system has not any leak. ; The cause of alarm ‘ADD OVER OR WATER FLOW TROUBLE ’ could be: 1. Water flow is not enough; 2.
41 Control Alarm Messages The cause of alarm ‘WARM WATER TEMP.’ could be: 1. The connection of water tank temperature sensor was loose; 2. The water tank temperature sensor was broken; How to do: 1. Find the connection and make sure it is fine; 2. As per resistance table of the sensor, please measure the sensor’s resistance, to judge the sensor was good or bad; replace a new one if the sensor get problem. The cause of alarm ‘FEEDLINE TEMP.’ could be: 1.
Control 42 Alarm Messages The cause of alarm ‘CMP TEMP.’ could be: 1. The connection of compressor exhaust air temperature sensor was loose; 2. The compressor exhaust air temperature sensor was broken; How to do: 1. Find the connection and make sure it is fine; 2. As per resistance table of the sensor, please measure the sensor’s resistance, to judge the sensor was good or bad; replace a new one if the sensor get problem. The cause of alarm ‘BRING IN TEMP.’ could be: 1.
43 Control Circuit Board Picture For BWB-SS- 7 (DC) and BWB-SS-9 (DC) Display Transition circuit board Module Main circuit board Circuit Board Picture For BWB-SS-12 (DC) and BWB-SS-15 (DC) Display Transition circuit board Module Main circuit board Power board
Control 44 Sensors resistance table compressor exhaust temperature sensor resistance tć -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 R(Kȍ) 542.7 511.9 483 455.9 430.5 406.7 384.3 363.3 343.6 325.1 307.7 291.3 275.9 261.4 247.8 234.9 222.8 211.4 200.7 190.5 180.9 171.9 163.3 155.2 147.6 140.4 133.5 127.1 121 115.2 109.8 104.6 99.69 95.05 90.66 86.49 82.54 78.79 75.24 71.
45 Control Sensors resistance table 2 water/ambient/pipe sensor resistance T -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 R 115.266 108.146 101.517 96.3423 89.5865 84.219 79.311 74.536 70.1698 66.0898 62.2756 58.7079 56.3694 52.2438 49.3161 46.5725 44 41.5878 39.8239 37.1988 35.2024 33.3269 31.5635 29.9058 28.3459 26.8778 25.4954 24.1932 22.5662 21.8094 20.7184 19.6891 18.7177 17.8005 16.9341 16.1156 15.3418 14.6181 13.918 13.
Control 46 Terminology and Abbreviations Evaporate In the evaporator, energy from the heat source is absorbed by the refrigerant passing through the evaporator. The refrigerant turns into gas. (See ”Heat Pump Principle” on p. 4). INTEGRAL INTEGRAL is the heat balance of the heating system. Production of heat is regulated acc. to a calculated heat demand value. This value is determined by comparing the actual supply line temperature with its calculated (set point) value.
47 Description of the Switch panel Connect to common Terminal (CT) When test or repair the machine, the compressor, water cycle pump and outdoor fan motor can be force manual startup.
Dealing with malfunctions 48 Draining, heat medium side Draining, collector side Close the shut-off valves in heating medium system. Open the drain valve (27). A small amount of water runs out, however, to fully empty the heating medium side requires the connector that joins the heating medium side and the connection on the heat pump VB-flow to be loosened a little to allow air to enter so the remaining water can run out. When the heating medium is empty the requisite service can be carried out.
49 Component placement 1 2 3 4 6 5 7 9 10 11 12 13 8 + 15 + 14 16 Please Note : The picture for reference only !
Component placement 50 BWB-SS-12 (DC) for example 17 35 34 18 33 19 32 20 31 21 30 22 29 23 28 24 25 26 27 Please Note : The picture for reference only !
51 Component placement 3X400 V / 3 / 50 HZ 36 + + 47 37 + + + + + + + + + + + + 46 + + 38 + + + + + + + + + + + + 45 + + 3 4 + 0057W + + + + 39 + 104 44 104 A + E28077 ROHS 104 A 104 + + + 40 + + + + + + + 43 + 42 52 48 53 + + + 49 54 + + + 41 50 104 A 104 55 51 Please Note : The picture for reference only !
List of components 52 Please Note : The list is for reference only! 1 2 3 4 Plastic top board Control panel Left side board Right side board 5 6 7 8 Front board Handles Stainless steel adjustable feet Heating Flow pipe connection( To Water Tank ) Ø 28 mm 9 10 11 12 Heating Flow pipe connection( To Floor ) Ø 28 mm Low pressure service valve 13 14 15 16 17 Brine Inlet Pipe Connection Ø 28 mm Heating Return Ø 28 mm Temperature sensor connection hole Power cord connection hole Evaporator 18 Three-way
53 Dimensions Dimensions and setting-out coordinates 970mm 80mm m 600m 60mm 685 mm
Accessories 54 62 (optional) 59 (optional) Enclosed kit 58 56 Outside air temperature sensor Room temperature sensor 57 61 60
55 Technical specifications Technical specifications 3 x 400 V IP 21 Refrigerant : R410A Model BWB-SS-7(DC) BWB-SS-9(DC) BWB-SS-12(DC) BWB-SS-15(DC) Heating Capacity at B0/W35 (KW) 6.950 8.900 11.905 14.500 Heating Power Input at B0/W35 (KW) 1.703 2.197 2.930 3.598 400V/3/50Hz 400V/3/50Hz 400V/3/50Hz Power supply (V/Ph/Hz)) 400V/3/50Hz Compressor brand Hitachi Hitachi Hitachi Hitachi Compressor type Rotary Rotary Scroll Scroll Starting current, compressor (A) 1.5 1.5 2.
