INSTALLATION AND MAINTENANCE INSTRUCTIONS GROUND SOURCE HEAT PUMP ( ALL IN ONE ) MODEL : BWA-SS-6 BWA-SS-8 ( 230V / 50HZ ) BWA-SS-10 BWA-SS-12 BWA-SS-16 ( 3x400V / 3 / 50Hz ) JULY 2009 Please read this operation manual before using the Heat Pump
1 Contents System description Principle of operation ............................................ 3 Unit Description .................................................... 3 Principle of heatpump ........................................... 4 Control panel Layout .................................................................. Explanation .......................................................... Functions ............................................................. Symbols ..............................
System description 2 Principle of operation BWA-SS series consists of a heat pump, water heater, electrical module, circulation pumps and a control system. BWA-SS series is connected to the collector and heating medium circuits. 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. Groundwater can also be used as a heat source, but this requires an intervening heat exchanger.
3 System description Unit Description In order to get the best results from the climate system BWA-SS series you should read through the section For the System manager in these Installation and Maintenance instructions. BWA-SS series is a climate system for heating houses and apartment buildings as well as industrial properties. Ground, rock or lakes can be used as the heat exchange source. BWA-SS series is a complete heating installation for heating and hot water.
System description 4 Principle of heat pump A 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. This makes the heat pump a very environmentally friendly and economically sound alternative for space heating. a. A hose filled with liquid (Brine system) is immersed into a lake, dug into the ground or sunk into the rock.
5 Control panel Layout o ROOM 20 C Display Up button OPER. AUTO Left button C DRight button Down F button Power On/Off A Explanation Control Panel The control panel of BWA-SS features a graphic display five control buttons . Beside the control panel you will find the User’s Manual, a short description of how to increase and reduce room temperature, and a label with name and phone number of dealer. o ROOM 20 C OPER.
Control panel 6 Functions The control computer is operated with the help of a user friendly menu system that is displayed on the contr ol panel. There is a main menu and four 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.
7 General information for the installer Transport and storage Inspection of the installation The BWA-SS series must be transported and stored upright and dry. The BWA-SS 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.
Pipe connections 8 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.
9 Pipe connections Pipe connections (heating medium) Pipe connections for the heat medium side are made at the top. 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.
10 Pipe connections Pump capacity diagrams, heating medium side BWA-SS-6 BWA-SS-10 BWA-SS-8 BWA-SS-12 BWA-SS-16 Available pressure Available pressure kPa kPa 80 70 60 50 40 30 20 10 0 80 70 60 50 40 30 20 10 0 1 2 3 Flow 0 0.22 0.44 0.66 0.88 1.10 1.32 1.54 1.76 l/s 2 1 3 Flow 0 0.28 0.56 WILO RS-25/8 0.84 WILO RL-25/7.5 1.12 1.4 1.68 WILO RL-25/7.5 How to adjust the rate of flow WILO RS-25/8 Tillgängligt tryck The pump is adjustable to adjust the flow: 1, 2, or 3.
11 Pipe connections Pump capacity diagrams, collector side BWA-SS-8 BWA-SS-6 BWA-SS-10 BWA-SS-12 BWA-SS-16 Available pressure kPa 80 70 60 50 40 30 20 10 0 1 2 3 Flow 0 0.22 0.44 0.66 0.88 1.10 1.32 WILO RS-25/8 WILO RS-25/8 The pump is adjustable to adjust the flow: 1, 2, or 3. 1.54 1.
Electrical connection 12 Connect the power cord N TS L G R G N N ( 230V / 50 HZ ) NOTE! Electrical installation and service must be carried out under the supervision of a qualified electrician in accordance with the stipulations in force.
13 Electrical connection Wiring of the terminal (mode one) Step1 Step2 Step3 Wiring of the terminal (mode two) Step1 Step2 Step3
Electrical connection 14 Connecting The Room Temperature Sensor RT OCT Room temperature sensor Room temperature sensor RT=Room temperature sensor Connecting The Outside Temperature Sensor RT OCT Outside air temperature sensor Outside air temperature sensor OCT=Outside air temperature sensor
From PCB / CON4 /3,4 From PCB / CON4 /1,2 From PCB / CON5 /3,4 From PCB / CON5 /5,6 From PCB / CON5 /7,8 From PCB / CON5 /9,10 RT WTT GWIT COMP HP LP CSP From Room Temperature Sensor From Water Tank Temperature Sensor From Groundwater Outlet Temperature Sensor From Compressor Gas Outlet Temperature Sensor From High Pressure Pressostat From Low Pressure Pressostat GND N From From Neutral line common terminal From Fuse 3 CON3 From Water cycle pump2 PCB GND OUT1 WCP2 OUT2 From Fuse 2
Electrical connection 16 L3 L2 L1 BLACK C1 w WHITE T2 cm u RED T1 v T3 Part of wiring diagram 2.
Electrical connection Wiring Diagram( 230V / 50 HZ ) EHI 17
Electrical connection Wiring Diagram ( 3X400V / 3 / 50 HZ ) FIGHTER 1220 18
19 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 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.
Commissioning and adjusting 20 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.
21 Control General information Menu Navigation The right-hand button on the con trol panel is used to open the desired menu. The left-ha nd button is used to return to the pr evious men u. The up and down butt ons are used to navigate betw een the parameters of a menu. A cu rs or (arrow) on the left-hand side of the display indica tes which me nu can be op en ed . The up and down buttons are also used if you wish to increase or reduce a preset value.
Control 22 Menus Main Menu INFORMATION To open the main menu INFORMATION, press the right- or left-hand button once. Return Open next menu INFORMATION OPERATION HEATCURVE TEMPERATURE INTEGRAL OPER TIME RESET MAN TEST Sub menus . To select the desired sub-menu use the up or down button. Open the menu by pressing the right-hand button once. To return to the main menu, press the left-hand button once. Sub-Menu OPERATION OPERATION AUTO ROOMHEAT WARMWATER HEATPUMP ADD HEAT .
23 Control Menus • OPERATION OFF Heat pump is turned off. The following text is displayed on the control panel: “OPERATION OFF “ If the heat pump will be put in OPERATION OFF mode during winter, please remember to let out all the water the heating system to avoid any damage caused by freezing. If you wish to change operating mode: a. Open the main menu INFORMATION by pressing the right- hand button once. You will find the sub-menu named OPERATION. b.
Control 24 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.
25 Control Menus Menu Text Description Adjustable by: OFF When the value (testing) reaches the value setting by user, the system will be closed. USER CMP.A When the value (testing) reaches the value setting by user, the compressor will be start-up.And the value(testing) under the value(setting),the compressor will be closed. USER ADD1 When the value (testing) reaches the value setting by user, the ADD1 will be start-up.And the value(testing) under the value(setting),the ADD1 will be closed.
Control 26 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.
27 Control Menus Sub-Menu OPERATING TIME OPERATION TIME HEATPUMP ADD1 ADD2 ADD3 WARMWT 2 1 0 0 0 H H H H H Table 3: Menu OPERATING TIME Menu Text Description Adjustable by: HEATPUMP Total operating hours of heat pump since installation. Operating time will not be reset to zero. USER ADD 1 Total operating hours of auxiliary heater (3kW) since installation. Operating time will not be reset to zero. USER ADD 2 Total operating hours of auxiliary heater (6kW) since installation.
Control 28 Menus Sub-Menu RESET Reset to factory setting value. Sub-MenuMAN TEST MAN TEST ADD1 ADD2 ADD3 HEAT PUMP 3 WAY BRINE PUMP WARM PUMP OFF OFF OFF OFF OFF OFF OFF How to enter the Sub-Menu MAN TEST: You need to choose the "MAN TEST" on the main menu ( INFORMATION) And press the right button for 3 second . The Sub-Menu MAN TEST contains ADD1 / ADD2 / ADD3 / HEAT PUMP / 3 WAY / BRINE PUMP / WARM PUMP ; You can choose ON / OFF to control the each part for testing.
29 Control Adjustments to be made regularly Supply line temperature 40 C CURVE Heat curve 18 64 56 Relation of outside air temperature to supply line temperature 48 40 32 24 5 18 -5 0 C Outside air temperature Adjustment of the CURVE value The heat curve will be adjusted by the CURVE value. This value indicates the supply line temperature to the radiators at 0°C outside temperature. At outside air tempe- ratures lower than 0°C, the water sent to the radiators will be warmer than 40°C.
Control 30 Adjustments to be made regularly When enter ‘Room heat’ mode, user could control compressor and electrical heater through regulate heat curve or DM (degree minute). under a certain ambient temperature ,the time start of compressor is determined by degree minute(DM). Now we are giving two situations to explain. 1.
31 Control Adjustments to be made regularly Adjustment of ROOM value As mentioned above, you can also adjust heat curve and indoor temperature by changing the ROOM value. If you use ROOM value to adjust the heat curve, the gradient does not change, i.e. it doesn’t become steeper or flatter. Instead, the whole curve is moved by 3°C for every degree by which the ROOM value is changed. The relation supply line temperature to outside air temperature will not be affected.
Control 32 Adjustments to be made regularly CURVE 34 C 0 CURVE 45 C 0 64 64 56 56 56 48 48 48 40 40 40 32 32 32 24 24 24 18 5 0 -5 Change of the value for CURVE + 5 C 18 5 0 -5 C 40 C CURVE 64 Change of the value for CURVE -5 18 5 0 -5 0 C Change of the value for CURVE 0 If you wish to change a specific part of the heat curve: 1 2 Open the main menu INFORMATION by pressing the right- or left-hand button once.You will find the cursor at the sub-menu OPERATION.
33 Control Adjustments to be made regularly Adjustment of the HEAT STOP value The HEAT STOP function stops all production av radiator heat when the outside air temperature is equal to or higher than the value entered for heat stop.When the heat stop function is activated, the circulation pump will be turned off except when warm water is being produced. Even if shut off, the pump will be”exercised” during 1 minute a day. Factory setting for heat stop is 17°C.
Control 34 Adjustments to be made regularly Graph of recent changes in TEMPERATURE All temperatures registered during the last hour can be viewed in the sub-menu TEMPERATURE in the shape of a graph. This will enable you to monitor changes in the different system temperatures. CURVE 45 C 0 64 56 48 40 32 24 18 5 0 -5 C There is a graph available for all temperatures, except for the ROOM temperature,where you can only view the setpoint value.
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 Check of Operating Mode In the event of an alarm, The background light of LCD will flash and an alarm message will be displayed. ALARM AND.HEAT OVER Check the alarm indicator regularly to make sure that the heat pump works properly. You would not always notice if there is something wrong, as the auxiliary heater would start automatically (provided, of course, operating mode AUTO was selected). For more information, please refer to the chapter ALARM MESSAGES on p. 38.
37 Control Regular Checks Checking the Water Level of the Heating System The pressure of the heating system should be checked once monthly. The pressure, shown on the external pressure gauge, should be 1-1,5 bar. If the value is below 0.8 bar with cold water in the heating system, more water must be added (applies to a closed expansion vessel). To find out where the pressure gauge is located. You can use ordinary tap water for filling the heating system.
Control 38 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. Table : Alarm Messages Message Signification Cause Action RETURN TEMP Return line temperature sensor error; All operation stopped, except circulation pump of heating system. Sensor disconnected; Sensor defective. Check the connections,the wire, or change it .
39 Control 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 (setpoint) value.
Description of the switch board 40 A0 1 : Control the compressor; AA M : Control the Ground water cycle pump; BA M Connect to Fuse 3 AA M Switch board When test or repair the machine, the compressor, Ground water cycle pump and water cycle pump can be force manual startup. Connect to Fuse 2 Function of manual switch board: A0 1 Connect to compressor contactor (A1) Function BA M : Control the water cycle pump.
41 Dealing with malfunctions Draining, heat medium side Close the shut-off valves in heating medium system. Open the drain valve (77). 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.
Component placement 42 1 7 11 12 4 13 14 6 5 3 8 2 9 8 10 9 18 17 16 15 Please Note : The picture for reference only !
43 Component placement 18 24 27 25 23 28 22 29 26 17 20 19 68 21 70 72 67 60 66 61 62 73 65 63 69 71 54 56 46 64 47 30 58 31 52 55 36 42 45 43 50 32 51 33 37 34 38 53 48 39 76 35 40 49 53 57 59 44 41 Please Note : The picture for reference only !
Component placement 44 230 V /50 HZ 75 74 3X400 V / 3 / 50 HZ 75 74 Please Note : The picture for reference only !
45 List of components 1 2 3 4 5 6 7 8 9 10 11 Top board Right side board Left side board Glass upper door Glass lower door Front board Board for fixing control panel Collector,brine out Collector,brine in Stainless steel adjustable feet Control panel 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Control panel Box Connecting wire of control panel Door lock Chassis Sound insulation board Connection,heating return Ø 28 mm Level vessel,connection /1 inch Connection,heating flow Ø 28
Dimensions 46 Dimensions and setting-out coordinates 1800 50 600 8 8 9 115 30-50 8 529 540 584 544 60 482 480 384 208 670 8 9 717 9 455 270 78 90 62 8
47 Accessories 88 87 Enclosed kit 84 83 82 80 Outside air temperature sensor Room temperature sensor 81 86 85 FIGHTER 1220
48 Technical specifications Technical specifications 230 V IP 21 Refrigerant : R410A Type ( BWA-SS SERIES ) 6 8 Heating Capacity at 7/35 °C ( KW ) 5.9 8.15 Heating Power Input at 7/35 °C ( KW ) 1.44 1.95 Operational voltage (V) 230 V / 50 HZ Starting current, compressor (A) 21 24 Heating current, compressor (A) 6.8 8.7 Operating curr. incl. immersion heater 6 kW (A) 14 14 Output, brine pump (W) 151 151 Output, heat medium pump (W) 151 151 Connection brine o.d.
49 Technical specifications Technical specifications 3 x 400 V IP 21 Refrigerant : R410A Type ( BWA-SS SERIES ) 10 12 16 Heating Capacity at 7/35 °C ( KW ) 9.85 12.6 16.0 Heating Power Input at 7/35 °C ( KW ) 2.45 3.04 3.90 Operational voltage (V) 3 x 400 V / 3 / 50 Hz Starting current, compressor (A) 30 30 35 Heating current, compressor (A) 4.8 6.35 7.0 Operating curr. incl.
