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Related Manuals for STIEBEL ELTRON LWZ 303 i
Summary of Contents for STIEBEL ELTRON LWZ 303 i
- Page 1 OPERATING UND INSTALLATION CENTRAL VENTILATION DEVICE WITH HEAT RECOVERY » LWZ 303 i » LWZ 303 SOL » LWZ 403 SOL...
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Page 2: Table Of Contents
OPERATION OPERATION _____________________________________________ 2 Installation ____________________________________________________ 28 9.1 Sound emissions ___________________________________________________ 28 General information ____________________________________________3 9.2 Installation conditions ____________________________________________ 29 1.1 Key ______________________________________________________________________3 9.3 Electrical installation _____________________________________________ 29 Safety ____________________________________________________________3 9.4 Oxygen diffusion ___________________________________________________ 29 2.1 Correct use ____________________________________________________________3 9.5 Water quality _______________________________________________________ 29 2.2 Safety instructions __________________________________________________3 Installation ____________________________________________________ 29 2.3 CE designation _______________________________________________________4... -
Page 3: General Information
OPERATION GENERAL INFORMATION General information 1.1.2 Symbols on the appliance Symbols are depicted on the system type plate. These are defined The Operation section is intended for users and contractors. as follows: The Installation section is intended for contractors. Disposal Please read carefully. -
Page 4: Ce Designation
OPERATION EQUIPMENT DESCRIPTION Operation Danger to life through electrocution! Never splash the appliance with water or other Controls liquids. Programming unit from the front Please note. Never change any system-specific settings at the control unit. Your contractor has set the control unit WEDNESDAY 11 JUN 08 10:23 TIME to match the local conditions for your building and... -
Page 5: Picture Symbols In The Display
OPERATION OPERATION Picture symbols in the display Scroll wheel At the lower edge of the display, symbols provide information Scroll wheel about the current system operating status. Up to eight symbols can be displayed at once. Remote maintenance: The system has been contacted for remote maintenance, or the system sends data packages automatically. -
Page 6: Menu Structure
OPERATION OPERATION 4.4.3 The menu key The operating menu is divided into five levels: The menu key has two functions. If you are on the start screen, Level 1 (start screen and operating mode selection) press "MENU" to enter the second level of the menu structure. Level 2 (menu) There, you have access to the system setting options, such as the Level 3 (submenu or parameter) -
Page 7: System Functions
OPERATION OPERATION Setting temperatures Menu level functions ROOM TEMPERATURE DAY SETTINGS ROOM TEMPERATURES HEATING HC1 SETTINGS ROOM TEMPERATURES VENTILATION 21.7 ROOM TEMPERATURE DAY °C SOLAR TIME / DATE Example 2: To set holiday dates, a calendar page for the selected 4.7.1 ROOM TEMPERATURES month appears. - Page 8 OPERATION OPERATION Ventilation time DHW COMPRESSOR DELAY (Delay compressor DHW) [MENU/SOLAR, P82] VENTILATION PARAMETER TIME / DATE SETTINGS When the solar circuit pump runs, the compressor is blocked for the period defined here. DHW is only heated with solar energy during this time.
- Page 9 OPERATION OPERATION under TIME/DATE. At the end of the holiday, the system runs — HEATING STAGE according to the set programs again. — EVAPORATOR DEFROST: If value 1 appears, this means the evaporator is currently being defrosted. PARTY: Under this menu item you can extend day mode for several —...
- Page 10 OPERATION OPERATION GRADIENT: The gradient [MENU/HEATING] determines the extent Particularly in spring and autumn, the flow temperature is subject to which a change in the outside temperature effects a rise in to naturally strong fluctuations because of the heat pump being the flow temperature.
- Page 11 OPERATION OPERATION Example 2: Heating curve 35/28 for underfloor heating (set room You can now set three pairs of switching times. The three pairs are temperature 20 °C, low end 1 °C, gradient 0.3, flow proportion listed on the display, to the right of the clock. A pair of switching 30%, design temperature - 15 °C) times comprises the start time and end point, at which the system returns to its previous state.
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Page 12: Selecting Operating Modes
OPERATION OPERATION DHW PROGRAM [MENU/PROGRAMS] Setting the operating mode Here, you can set the periods when DHW is heated with reference WEDNESDAY 11 JUN 08 10:23 TIME to the set day temperatures. In the other phases, the set night temperatures are followed. The times are set as for the heating 14.0 °C OUTSIDE TEMPERATURE programs. -
Page 13: Favourites, Quick Link, Function Block
OPERATION OPERATION 4.8.7 EMERGENCY MODE You can select parameters 01 to 89. To make the direct line easier If emergency mode is enabled, heating stage "COMPRESSOR" to use, the designation of the parameter is displayed along with is skipped. Heating is provided by the solar thermal system (if the parameter numbers. - Page 14 OPERATION OPERATION 4.10.1 FAULT MEMORY [CONTRACTOR/FAULT SEARCH/FAULT MEMORY] The fault memory is also accessible to you as a customer. There, you receive an overview of the faults most recently registered by the appliance. The fault memory of the programming unit contains the ten most recent fault messages.
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Page 15: Menu/Operating Modes Overview
OPERATION OPERATION 4.11 Menu/operating modes overview Here, you can see a graphic display of the operating mode selection. On the following pages, you will find the individual thematic blocks of the menu structure. START SCREEN [ --> 4.8.1 ] STANDBY [ --> 4.8.2 ] AUTOMATIC [ --> 4.8.3 ] DAY MODE... - Page 16 OPERATION OPERATION ROOM TEMPERATURES HEATING HC1 ROOM TEMPERATURE DAY ROOM TEMP. NIGHT ROOM TEMP. STANDBY MANUAL SET HC ROOM TEMPERATURE BACK HEATING HC2 AS PER HEATING HC1 BACK VENTILATION PARAMETER DAY STAGE NIGHT STAGE STANDBY STAGE PARTY STAGE MANUAL STAGE UNSCHED.
- Page 17 OPERATION OPERATION DHW TEMPERATURES DHW SET DAY DHW SET NIGHT DHW SET STANDBY BACK PARAMETER CODE REQUIRED BACK SOLAR SOLAR ACTIVATION TEMP. DIFFERENTIAL DHW COMPRESSOR DELAY DHW SOLAR TEMP. SOLAR HYSTERESIS CODE REQUIRED COLL. PROTECT TEMP CODE REQUIRED BACK TIME / DATE TIME / DATE SUMMERTIME MANUAL SUMMERTIME AUTOMATIC...
- Page 18 OPERATION OPERATION HOLIDAYS-PARTY HOLIDAYS HOLS BEGINNING HOLIDAYS ENDING BACK PARTY PARTY BEGINNING PARTY ENDING BACK BACK ACTUAL VALUES OUTSIDE TEMPERATURE ROOM TEMPERATURE HC1 SET ROOM TEMPERATURE HC1 RELATIVE HUMIDITY 1 DEW POINT TEMP. 1 ROOM TEMPERATURE 2 SET ROOM TEMPERATURE HC2 RELATIVE HUMIDITY 2 HEAT M BOOST DHW TTL HEAT M RECOVERY DAY...
- Page 19 OPERATION OPERATION HEATING HEATING CURVE HC1 GRADIENT LOW END ROOM INFLUENCE FLOW PROPORTION MAX. SET VALUE MIN. SET VALUE HEATING CURVE BACK HEATING CURVE HC2 AS PER HEATING CURVE HC1, BUT WITHOUT PARAMETER "FLOW PROPORTION" HTG FACTORY SETTINGS CODE REQUIRED HYSTERESES CODE REQUIRED BACK...
- Page 20 OPERATION OPERATION PROGRAMS HEATING PROGRAM HC1 MONDAY SWITCHING TIMES PAIR 1 SWITCHING TIMES PAIR 2 SWITCHING TIMES PAIR 3 BACK FRIDAY SATURDAY SUNDAY MON-FRI SAT-SUN MON-SUN BACK HEATING PROGRAM HC2 AS PER HEATING PROGRAM 1 AS PER HEATING PROGRAM 1 DHW PROGRAM FAN PROGRAM AS PER HEATING PROGRAM 1...
- Page 21 OPERATION OPERATION COMMISSIONING LANGUAGE TERMINAL ADDRESS CODE REQUIRED CONTRAST CODE REQUIRED MAX. ADVANCE SOFTWARE VERSION CODE REQUIRED DUAL-MODE POINT CODE REQUIRED BOOSTER T ACTIVATE ROOM TEMP CORRECTION 1 CODE REQUIRED ROOM TEMP CORRECTION 2 CODE REQUIRED MAX FLOW TEMP HTG. CODE REQUIRED MAX FLOW TEMP DHW CODE REQUIRED...
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Page 22: Cleaning, Care And Maintenance
OPERATION CLEANING, CARE AND MAINTENANCE Cleaning, care and maintenance » Press the reset button after inserting the new filters. A contractor should check or clean the cross- Keep the air inlet and outlet apertures on the countercurrent heat exchanger, the evaporator and external wall free from snow and leaves. -
Page 23: The System Is Noisy
INSTALLATION WHAT TO DO IF... ? ... the system is noisy 6.13 ... the dwelling is too warm in spring and autumn Since the system moves very large volumes of air, it cannot work silently. You should slightly increase the gradient and lower the low end temperature of the heating curve. -
Page 24: Installation
INSTALLATION SAFETY Safety TAB: Technical connection conditions for connections to the LV mains. General safety instructions All required steps to complete commissioning must be carried out 7.2.3 Water installation by a qualified contractor. During this process, these installation DIN 1988, DIN EN 806: Technical rules for DHW installations instructions must be observed. -
Page 25: Equipment Description
INSTALLATION EQUIPMENT DESCRIPTION Equipment description Buffer cylinder arrangement Standard delivery The function module and cylinder module are supplied in separate packs. Function [ --> 8.4 ]. Outside air and extract air are drawn in via the ventilation air filter (1) or extract air filter (3), and routed into separate ducts. The outside air drawn in via a particle air filter is routed through a cross-countercurrent heat exchanger (2), where it is heated and then supplied to the living space as ventilation air. -
Page 26: Function Diagram
INSTALLATION EQUIPMENT DESCRIPTION Function diagram Function diagram 25 26 * only LWZ 303 SOL and LWZ 403 SOL Ventilation air fan 25 Heating return Cross-countercurrent heat exchanger 26 Heating flow Extract air fan 27 Outside air Heat exchanger (air preheater) 28 Extract air Check valve 29 Ventilation air... -
Page 27: Equipment Layout
INSTALLATION EQUIPMENT DESCRIPTION Equipment layout Equipment layout 45 * 18 / 19 46 * 48 * ** only LWZ 303 SOL and LWZ 403 SOL Ventilation air fan 19 High pressure sensor 35 Circulation pump Ventilation air connection DN 160 20 Filter dryer 36 Expansion vessel Outside air connection 410 x 155 oval... -
Page 28: Accessories
INSTALLATION INSTALLATION Installation Accessories In the function module, at the bottom left behind the sound Sound emissions insulation panel, you will find the following components required for installation. Never install the appliance immediately below, above or adjacent to living rooms or bedrooms. With the special anti-vibration feet, —... -
Page 29: Installation Conditions
INSTALLATION INSTALLATION You may wish to provide a dividing wall or shrubs between the — During the service life of the system, the total of the fill and inlet and outlet apertures. top-up water must not exceed three times the rated volume of the heating system, Never align the apertures toward neighbouring living room or —... -
Page 30: Equipment Installation
INSTALLATION INSTALLATION Fitting the mounting bracket Undo the frame The frame (comprising mounting bracket and bracket strip) that was used to secure the cylinder module to the pallet is required for the appliance installation. » Undo the frame from the pallet and dismantle. 10.3 Equipment installation ... - Page 31 INSTALLATION INSTALLATION Fitting adjustable feet Fitting adjustable foot and bracket strip Adjustable foot Bracket strip Mounting bracket » Washer Secure the strip to the function module using M4x8 screw, as Cylinder foot shown in the diagram below. Metal bracket Securing bracket strip to function module Adjustable foot Sliding block »...
- Page 32 INSTALLATION INSTALLATION 10.3.3 Connecting the heating flow and return 10.3.5 Flow and return connection If an underfloor heating thermostat is installed, it should be set » Fit the heating cartridge for the electric booster heater onto the with a sufficient gap (at least 20 K) from the "maximum set heating cylinder module.
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Page 33: Power Supply
INSTALLATION INSTALLATION 10.3.8 Condensate drain 10.4.2 Cable routing As condensate drain, a 1" hose is fitted to the defrost pan connector. Route all connecting cables and sensor leads through the entries provided at the top of the cylinder back panel. You can route the condensate drain hose out of the appliance to the right, left or back. - Page 34 INSTALLATION INSTALLATION 10.4.4 Connection X4: Control unit and heating circuit 2 10.4.6 Connection X28: Solar circuit pump and oven / fireplace Connect the cable that will supply power to the control unit and Connecting solar circuit pump and oven/fireplace heating circuit 2 to terminals X4. Connecting control unit and heating circuit 2 Anschluss externe Temperatur- 1/N/PE~230V...
- Page 35 INSTALLATION INSTALLATION Sensor layout room temperature. If required, this value influences the heating curve. With this, you can reduce the heating curve if the set room temperature in the lead room, i.e. the room where the programming unit is installed, is exceeded (for example through insolation or a wood stove).
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Page 36: Installing Casing Parts And Programming Unit
INSTALLATION INSTALLATION 10.5 Installing casing parts and programming unit Fitting the collector sensor After you have connected the appliance hydraulically and electrically, you can install the remaining casing parts and programming unit. » Hook the side panel into the back panel of the cylinder module and secure the side panel at the bottom to the frame. - Page 37 INSTALLATION INSTALLATION Securing the cover Fitting programming unit to the fascia Side panel mounting plate Back panel mounting plate » Hook the front panel into the side panel and route the BUS cable through the notch in the front panel forward out of the appliance. »...
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Page 38: Outside Air And Expelled Air Hose Installation
INSTALLATION INSTALLATION Positioning the fascia 10.6 Outside air and expelled air hose installation If connecting a ground source heat exchanger, convert the appliance as described in the installation instructions supplied in the pack before installing the air hoses. Air hoses guide the inlet air (outside air) from the outside to the heat pump, and route the discharge air (expelled air) to the outdoors. -
Page 39: Installing Extract Air And Ventilation Air Pipes
INSTALLATION COMMISSIONING 11 Commissioning » Seal the join between inner hose and connector using the adhesive tape provided. Only approved contractors may commission this » Push the outer hose with insulation over the connector and equipment and instruct the operator in its use. secure using the oval hose clips provided. - Page 40 INSTALLATION COMMISSIONING 11.2.1 Commissioning for drying out or heating — Has an overflow valve been integrated in the heating circuit and set to the correct pressure? » Isolate all poles of the compressor and booster heater from the — Has a quick-acting air vent valve been integrated in the heating power supply by removing their fuses.
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Page 41: Control Technology
INSTALLATION CONTROL TECHNOLOGY 12 Control technology » In this case, open the windows in the ventilated rooms (living room, nursery and bedroom). Apart from the adjustment of set values, as described in chapter [ 4 ], you can also tailor the parameters to the specific system. If "PASSIVE COOLING"... -
Page 42: Dhw
(in %), the filter symbol shows that the filter is another appliance function. dirty. 12.2.5 Pasteurisation temperature OPERATING MODE DEFR. (only LWZ 303 i) [MENU/VENTILATION, P85]: [MENU/DHW/PARAMETER] Generally, the air/air heat exchanger defrosts automatically For every heat-up process for the purpose of pasteurisation, the when the heat exchanger freezes up. -
Page 43: Solar
INSTALLATION CONTROL TECHNOLOGY Risk of scalding. 12.2.8 DHW BUFFER MODE [MENU/DHW/PARAMETER, P84] Temperatures in excess of 60 °C can be reached. This parameter is only available for appliances in the "LWZ SOL" Take suitable measures to ensure protection against series. If DHW BUFFER MODE is enabled, the DHW cylinder is used scalding (for example a central thermostatic valve, as a buffer cylinder for excess output [ -->... -
Page 44: Heating Hystereses
INSTALLATION CONTROL TECHNOLOGY 12.4.4 SUMMER MODE then corrected accordingly. If "0.0" is entered here, the actual [MENU/HEATING/HTG FACTORY SETTINGS, P49] value is displayed again. At the value set here for the outside temperature, there is a changeover between summer and winter mode. In summer mode, 12.4.11 Suppression of actual temperatures - pump start heating is switched off. -
Page 45: Contractor Level
INSTALLATION CONTROL TECHNOLOGY Reserved for contractors — COMPRESSOR — MIXER OPEN SETTINGS CONTRACTOR LOGIN RES. FOR CONTRACTOR — MIXER CLOSED — BOOSTER STAGE 1 — BOOSTER STAGE 2 — BOOSTER STAGE 3 — EXTRACTOR SPEED RES. FOR CONTRACTOR — VENTILATOR SPEED —... -
Page 46: Commissioning Menu
P48]: To ensure the heat pump operates efficiently, the expelled be reached early. air fan for the LWZ 303 i and 303 SOL should always be set to 60%, and for the LWZ 403 SOL, to 70%. 12.8.5 SOFTWARE VERSION This shows which software version is installed on the control PCB. -
Page 47: Economy Settings
INSTALLATION CONTROL TECHNOLOGY 12.8.15 DRY HEATING PROGRAM: Screed drying program 12.8.16 Delivered condition If an underfloor heating system is installed, you can dry the screed [MENU/COMMISSIONING] with the "DRY HEATING PROGRAM" [MENU/COMMISSIONING]. If you set this parameter to "ON", then all parameters will be reset Here, you can specify a temperature curve as provided by the to their factory settings. -
Page 48: Troubleshooting
INSTALLATION TROUBLESHOOTING 13 Troubleshooting 12.9.5 SUMMER MODE At the factory, the summer/winter changeover temperature 13.1 Expelled air fan is catching (parameter SUMMER MODE under HEATING/HTG FACTORY SETTINGS, P49) is set to 20 °C and the HYST. SUMMER MODE (P50) Troubleshooting is set to 1 K. -
Page 49: Fault Messages
INSTALLATION TROUBLESHOOTING 13.4 Fault messages valves or zone valves in the underfloor heating system are If there is a fault in the system, a fault message appears on the closed. If all valves are closed, this indicates that a heating curve display. -
Page 50: Maintenance And Cleaning
INSTALLATION MAINTENANCE AND CLEANING 14 Maintenance and cleaning Fault 17: Defrost time exceeded The evaporator is not defrosted within the defined period. If the 14.1 Cleaning the heat exchanger fault occurs ten times in a row, the compressor is blocked. Check and clean the cross-countercurrent heat exchanger at least Remedy: Inform customer service. -
Page 51: Cleaning The Condensate Drain
INSTALLATION MAINTENANCE AND CLEANING Cleaning the evaporator » Pull cover (7) on the right approx. 10 cm forward and then remove to the right. The evaporator fins are now accessible and can be cleaned with a strong jet of water. »... -
Page 52: Specification
INSTALLATION SPECIFICATION 15 Specification 15.1 Wiring diagrams Wiring diagram LWZ 303 i | LWZ i | LWZ SOL www.stiebel-eltron.com... - Page 53 INSTALLATION SPECIFICATION Wiring diagram LWZ 303 / 403 SOL www.stiebel-eltron.com LWZ i | LWZ SOL |...
- Page 54 INSTALLATION SPECIFICATION Key to the LWZ 303 i and LWZ 303/403 SOL wiring diagrams 4-PIN plug-in connection 2-PIN plug-in connection Integral control unit Earth sub-unit Programming unit Earth tab connection group Cylinder temperature sensor Earth tab DHW outlet Temperature sensor - heating flow...
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Page 55: Sample Connections
INSTALLATION SPECIFICATION 15.2 Sample connections Example 3: Off-period for booster heater and heat pump Example 1: Without off-periods C16 A C16 A (C20 A) C16 A C16 A C16 A (C20 A) 2/N/PE ~ 50Hz 230V Supply from low tariff electricity meter C16 A Heat pump Booster heater... -
Page 56: Measurements And Connection Dimensions
INSTALLATION SPECIFICATION 15.3 Measurements and connection dimensions Measurements and connection dimensions Ø • | LWZ i | LWZ SOL www.stiebel-eltron.com... - Page 57 INSTALLATION SPECIFICATION Power connection Condensate connection on the right or left Wall outlet with thermal insulation and hose connection External grille with built-in frame Cold water Heating return Heating flow Ventilation air 10 Outside air 11 Extract air 12 Expelled air 13 Solar inlet (only for LWZ SOL) 14 Solar outlet (only for LWZ SOL) 15 Connection for ground source heat exchanger...
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Page 58: Specification
A-7/W35 = air inlet temperature: -7 °C; heating flow: 35 °C A-15/W35 = air inlet temperature: -15 °C; heating flow: 35 °C Flow rate for domestic ventilation: 170 m /h, 50 Pa LWZ 303 i / SOL Flow rate for domestic ventilation: 200 m /h, 75 Pa LWZ 403 SOL | LWZ i | LWZ SOL www.stiebel-eltron.com... -
Page 59: Output Diagrams
INSTALLATION SPECIFICATION 15.5 Output diagrams Output diagram LWZ 303 i - 15 - 10 Outside temperature [°C] Heating output [kW] Flow temperature 35 °C with heat recovery at 170 m Flow temperature 50 °C with heat recovery at 170 m Flow temperature 35 °C... - Page 60 INSTALLATION SPECIFICATION Output diagram LWZ 403 SOL 10,0 - 15 - 10 Outside temperature [°C] Heating output [kW] Flow temperature 35 °C with heat recovery at 200 m Flow temperature 50 °C with heat recovery at 200 m Flow temperature 35 °C Flow temperature 50 °C Fan curves Flow rate [m...
- Page 61 INSTALLATION SPECIFICATION Heating circuit pump diagram 0,06 0,05 0,04 0,03 0,02 0,01 Flow rate [m Residual head [MPa] Stage 1 (45 W) Stage 2 (60 W) Stage 3 (90 W) www.stiebel-eltron.com LWZ i | LWZ SOL |...
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Page 62: Parameter Overview
INSTALLATION SPECIFICATION 15.6 Parameter overview Only adjustable parameters are listed here. Parameter Direct Setting range Standard System value ROOM TEMPERATURES HEATING HC1 ROOM TEMPERATURE DAY (room temp. day mode heating circuit 1) 10 to 30 °C ROOM TEMP. NIGHT (room temp. setback mode HC1) 10 to 30 °C ROOM TEMP. - Page 63 INSTALLATION SPECIFICATION Parameter Direct Setting range Standard System value PARAMETER HYSTERESIS (start hysteresis DHW temperature) 2-10 K BOOSTER TIMEOUT (during DHW heating) 0-240 min BOOSTER T ACTIVATE (DHW) -10-10 °C PASTEURISATION (pasteurisation interval) 1-30 days MAX DHW HTG DUR. 6-12 hours PASTEURISATION TEMP.
- Page 64 INSTALLATION SPECIFICATION Parameter Direct Setting range Standard System value MAX. SET VALUE heating circuit 2 10-65 °C MIN. SET VALUE heating circuit 2 0-40 °C HTG FACTORY SETTINGS INTEGRAL COMPONENT 1-999 Kmin MAX BOOSTER STG HTG (booster heating stages) MAX. FLOW TEMP. heating 10-75 SUMMER MODE 10-25 °C...
- Page 65 Stage 4 = electric booster heater 5.6 kW Stage 5 = electric booster heater 8.8 kW All fan stages set to 0 at the factory LWZ 303 i (LWZ 303 SOL) [LWZ 403 SOL] www.stiebel-eltron.com LWZ i | LWZ SOL |...
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Page 66: Customer Service And Waranty
CUSTOMER SERVICE AND WARRANTY | ENVIRONMENT AND RECYCLING | LWZ i | LWZ SOL www.stiebel-eltron.com... - Page 67 NOTES www.stiebel-eltron.com LWZ i | LWZ SOL |...
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