INSTALLATION AND MAINTENANCE MANUAL GROUND SOURCE HEAT PUMP WITH DC INVERTER (SIMPLE 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 -
Contents General information for the installer Transport and storage ............................................................................................................ 2 Installation .............................................................................................................................. 2 Overview of external structure ................................................................................................ 2 Inspection of the installation .............................
General information for the installer Transport and storage Inspection of the installation The BWB-SS DC must be transported and stored upright and dry. The BWB-SS DC 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.
Pump Data Pump capacity diagrams Wilo-Star-RS 25/6 (BWB-SS-7 DC) 6 [ Kpa 80 70 60 50 40 30 20 10 0 WILO RL-25/7.5 (BWB-SS-15 DC) 1 2 3 0.22 0 0.44 0.66 0.88 Flow 1.10 1.32 1.54 1.76 [L /s] Available pressure [ Kpa 80 70 60 50 40 30 20 10 0 [ (BWB-SS-9 DC / BWB-SS-12 DC) [ Wilo-Star-RS 25/8 Available pressure 2 Tillgängligt tryck 1 3 0 0.28 0.56 -3- 0.84 1.12 1.4 1.68 Flow 1.96 2.
Pump Data How to adjust the rate of flow The pump is adjustable to adjust the flow: 1, 2, or 3. WILO RS-25/6 WILO RS-25/8 The pump is adjustable to adjust the flow: 1, 2, or 3. WILO RL-25/7.
Electrical connection Wiring Diagram ( 220V / 1 / 50 HZ ) BWB-SS-7/9 DC ( 220V / 1 / 50 HZ ) EXHAUST TEMPERATURE SENSOR CN27 5 YELLOW BLUE OUTDOOR MAIN PCB CN8 CN6 CN1 CN10 CN2 CN4 RED RED BLACK L L OFAN-L OFAN-H CN16-L CN21-L CN16-N CN11 CN17 CN9 WHITE P6 WHITE P3 P1 P1 BLUE / WHITE CN614 CN11-N CN22 Compressor Frequency Decrease For Protection CN11-L CN23 CFDT CM CN5 CN15 CN24 CN21-N 5 LP CSP Compressor Stop For Protection WIRING DIAGRAM EXPANSION VALVE BLACK WHITE
Electrical connection Wiring Diagram ( 220V / 3 / 50 HZ ) BWB-SS-12/15 DC ( 220V / 3 / 50 HZ ) EXHAUST TEMPERATURE SENSOR CN14-L CN14-N CN16-N CN16-L CN22 CN21-L CFDT CN24 CN21-N CN23 CN19-L LP CSP CN15 CN19-N Compressor Stop For Protection 5 CN5 CM WIRING DIAGRAM EXPANSION VALVE OUTDOOR MAIN PCB Compressor Frequency Decrease For Protection CN27 5 S K1 COM CN17 CN614 N-IN REACTOR1 RED YELLOW L-IN BLUE / WHITE BLUE / WHITE BLUE NO RED 60uf CAP Y/G CN11 CN10 CN13 CN12 A B
Electrical connection Wiring Diagram ( 380V / 3 / 50 HZ ) BWB-SS-12/15 DC ( 380V / 3 / 50 HZ ) EXHAUST TEMPERATURE SENSOR CN14-L CN14-N CN16-N CN16-L CN21-L CN22 CN24 CN21-N CN23 CFDT CN19-L LP CSP CN15 CN19-N Compressor Stop For Protection 5 CN5 CM WIRING DIAGRAM EXPANSION VALVE OUTDOOR MAIN PCB Compressor Frequency Decrease For Protection CN27 5 S K1 COM CN17 CN614 N-IN REACTOR1 RED YELLOW L-IN BLUE / WHITE BLUE / WHITE RED 60uf Y/G CAP CN11 CN10 CN13 CN12 A B CN120 C
Control panel Layout Left button Up button Display MONDAY 11:30 W. T. HEATING 37 Right button 115% Down button Power On/Off • One button pointing upwards marked with a up arrow • One button pointing downwards marked with a down arrow • One button pointing to the right marked with a right arrow • One button pointing to the left marked with a left arrow • One button pointing to the ON/OFF Explanation The control panel of BWB-SS DC series features a graphic display, five control buttons.
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. The left-hand button is used to return to the previous menu.
Control Menus MENU WORK WAY STERILIZE ADD. START ADD DELAY RESET LANGUAGE 36(53) WARM WT 12 (-9) BR. IN 13 BR.
Control Function detail Warm WT(10-60ć): water tank setting temperature When water get to setting temperature heat pump will stop automatically if the work way is ON/OFF When water is getting close to setting temperature heat pump will slow down if the work way is Const.
Control Function detail WORK WAY: ON/OFF mode or Const. mode (inverter) WORK WAY ON / OFF CONSTANT ON/OFF mode ˖compressor stop running as soon as reach setting water temperature Const. mode: constant water temperature mode, factory setting is 3 degree; if the heat pump runs Const. way, when the water temperature is 3 degree far from setting temperature, the compressor will slow down.
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.
Control 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.
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 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 ‘LOW PRESS’ could be ˖ 1. The refrigerant was not enough 2. The connection of low pressure switch was loose, or the switch was broken; 3.
Control 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.
Control Circuit Board Picture For DC BWB-SS- 7 and DC BWB-SS-9 Display Transition circuit board Module Main circuit board Circuit Board Picture For DC BWB-SS- 12 and DC BWB-SS-15 Display Transition circuit board Module Main circuit board - 18 - Power board
Control Water Sensor Resistance water 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.
Component placement Component Positions 1 Please Note : The picture for reference only ! 1 2 3 4 6 5 7 10 9 20 19 8 18 16 15 17 11 21 12 13 14 - 20 -
Component placement Component Positions 2 Please Note : The picture for reference only ! BWB-SS-7 / 9 DC 24 28 29 25 23 22 27 + + + + 26 + + 36 35 + 37 + + + + 32A + 33 + + + + + + 30 + + E28077 ROHS 34 31 BWB-SS-12 / 15 DC 24 28 29 25 23 22 + + + + 26 27 37 36 + + + + 32B + + + + + + + + + + 31 + + + + + 3 4 + 0057W 34 + + + + + 38 104 A 104 + E28077 ROHS 104 A 104 + + + + A + + + + 10 4 104 + + + + + + + + + + + + 3
Accessories and List of components Enclosed kit 41 44 43 42 46 45 List of components Please Note : The List for reference only ! 1 2 3 4 Plastic top board Control panel Left side board Right side board 24 25 26 27 28 29 30 31 32A 32B High pressure needle valve Low pressure needle valve Brine Out Pipe Connection Ø 28 mm Brine In Pipe Connection Ø 28 mm Temperature sensor connection hole Power cord connection hole Transition Circuit board Main circuit board PFC Capacitor 33 34 Module Electrical Bri
Dimensions Dimensions 970mm 80mm m 600m 60mm 685 mm - 23 -
Technical specifications Technical specifications IP 21 Refrigerant : R410A Ground Source Heat Pump With DC inverter Ground Source Heat Pump With DC inverter Ground Source Heat Pump With DC inverter Model: Indoor unit Model: Indoor unit Model: Indoor unit Heating Capacity Heating Power Input Power Supply Rated Current Max.Input Power Max.Discharge Pressure Max.SuctionPressure Refrigerant Brine Pump Flux Noise Net Weight BWB-SS-7(DC) 7050W 1753W 220V/50Hz/1Ph 8.0A 2850W 4.0MPa 0.95MPa R410A /1.
