Related Manuals for STIEBEL ELTRON LWZ 304 Integral
Summary of Contents for STIEBEL ELTRON LWZ 304 Integral
- Page 1 INSTALLATION Central ventilation unit with heat recovery » LWZ 304 Integral » LWZ 304 Trend » LWZ 404 Trend...
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Page 2: Table Of Contents
CONTENTS SPECIAL INFORMATION … „ EVAPORATOR 32 … „ REFRIGERATION UNIT 33 INSTALLATION … „ PUMPS 33 General information �����������������������������������������3 … „ PUMP CYCLES 33 Relevant documents 3 … „ EMERGENCY MODE AUTO 33 Standardised output data 3 …... -
Page 3: Special Information
WARNING Electrocution Isolate the appliance from the power supply prior to commencing any work in the interior of the appliance. www.stiebel-eltron.com LWZ 304 Trend | LWZ 404 Trend | LWZ 304 Integral |... -
Page 4: Instructions, Standards And Regulations
INSTALLATION Safety Alternate operation WARNING Electrocution The connection to the power supply must be in the form Operation on alternate sides means that, when the combustion of a permanent connection. The appliance must be able equipment is commissioned, the mechanical ventilation system is to be separated from the power supply by an isolator switched off and cannot be started. -
Page 5: Appliance Description ���������������������������������������5 9. Troubleshooting
INSTALLATION Appliance description Required accessories As the appliance in the installation room can produce negative pressure, we recommend using a tightly sealing door between the - Air hose with thermal insulation, 4 m installation room and the living space for operation with combus- - Thermally insulated wall outlet with external wall grille tion equipment. -
Page 6: Preparations
INSTALLATION Preparations You can determine the operating mode by positioning the cylinder Material losses temperature sensor. The installation room floor must be water resistant. Dur- ing appliance operation, the outdoor air releases up to 50 l of condensate per day. If the condensate drain is not installed correctly or if maintenance is not carried out properly, water may escape. -
Page 7: Air Routing
INSTALLATION Preparations Outdoor/exhaust air connection with air hose Outdoor air domestic ventilation connection option ≥500 ≥300 1 Filter box Air routing Prevent air stream "short circuits". The air intake and discharge apertures in the external walls should be arranged around cor- ners. -
Page 8: Electrical Installation
INSTALLATION Preparations The floor between the installation room and living areas must Anti-vibration separation have carefully applied anti-vibration separation. Ensure that no With the anti-vibration feet, it is possible to install the appliance pipes are routed on or in the wall and that the air ducts have on floating screed, as long as this has been applied correctly. -
Page 9: Oxygen Diffusion
INSTALLATION Installation Electrical data is provided in the chapter "Specification / Data table". In accordance with the fuse protection, use the following cable cross-sections when wiring: MCB/fuse rating Cable cross-section 16 A 2.5 mm 1.5 mm² with only two live cores and routing on a wall or in an electrical conduit on a wall. - Page 10 INSTALLATION Installation f Remove the wooden braces secured to the pallet which pre- vented the appliance from slipping during shipping. 1 Upper front panel 2 Cross-countercurrent heat exchanger 3 Outdoor air filter cassette f Remove the upper front panel. 1 Door hinge bracket that attaches the side panel to the appli- f Remove the round knock-out from the back panel of the ance and holds the door function module.
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Page 11: Installing The Cylinder Module
INSTALLATION Installation Installing the cylinder module f Undo the screws underneath the pallet with which the cylin- der module is secured to the pallet. Material losses Never tilt the cylinder module excessively. Contacts be- tween the casing and the floor can damage the paint- work. -
Page 12: Connecting Modules
INSTALLATION Installation Connecting modules f Push the cylinder module further towards the function mod- ule, so that the rear r.h. adjustable foot of the cylinder mod- ule is pushed into the recess in the joining bracket. Cylinder temperature sensor, anode cable, earth cable f The lower joining bracket ensures that the cylinder module f Remove the cable tie that ties together the electrical cables of is automatically pushed into its final position. - Page 13 INSTALLATION Installation f Undo the screws on the high limit safety cut-out retaining Material losses bracket. Before filling, tighten the screws only lightly so that the f Unhook the high limit safety cut-out retaining bracket from paint finish is not damaged when the cylinder module the slots, pull it out of the appliance and hook it into the moves down during filling.
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Page 14: Heating Water Connection
INSTALLATION Installation Heating water connection The heating system must be connected by a qualified contractor in accordance with the water installation drawings, which are part of the technical guides. You can use the push-fit connectors supplied or ball valves to make the connection of the flow and return. Note Deburr the pipe ends. -
Page 15: Water Connection
INSTALLATION Installation Water connection Thermal insulation f Provide thermal insulation in accordance with current regulations. Material losses Never install the push-fit connectors in the DHW line. Heating circuit water quality Only install the push-fit connectors in the heating circuit. Carry out a fill water analysis before filling the system. This may, Stainless steel, zinc-plated steel, copper or plastic pipework are for example, be requested from the relevant water supply utility. -
Page 16: Filling And Venting The Heating System
INSTALLATION Installation Filling and venting the heating system f Fill the system. f After filling close the drain connection. f Fit the cap on the drain connection. You can check the water pressure in the heating circuit on the programming unit with the "PRESSURE HTG CIRC" value. f Determine the "PRESSURE HTG CIRC"... -
Page 17: Electrical Connection
INSTALLATION Installation Route the condensate into a floor drain. When doing so, ensure the 5.8.2 Control panel drain is adequately ventilated, e.g. free discharge into a siphon. Use a condensate pump if there is insufficient fall. f Check the position of the condensate pump in the function module. - Page 18 INSTALLATION Installation 5.8.5 Terminal X4 5.8.7 External pumps (PWM) Note Note Install additional contactor relays if more than one exter- The power supply to the external pumps is not provid- nal heating circuit pump is to be connected at the "Pump ed via the appliance.
- Page 19 INSTALLATION Installation 5.8.10 Connecting sensors PWM HK2 0-10V HK2 PWM SOL 0-10V SOL CAN-H CAN-L 1 Sensor well for the cylinder temperature sensor (economy Outside temperature sensor mode/buffer mode) Mixer circuit flow temperature sensor 2 Sensor well for the cylinder temperature sensor (Comfort) Room temperature sensor No function No function...
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Page 20: Fitting The Appliance Casing
INSTALLATION Installation Room temperature sensor 0-10V SOL If planned as part of the system configuration, install the sensor CAN-H according to the sensor installation instructions. CAN-L f Route the sensor lead through the cable entry in the back panel of the cylinder module. f Connect the room temperature sensor to X5-Tr. -
Page 21: Outdoor Air And Exhaust Air Hose Installation
INSTALLATION Installation f Screw the fascia onto the device. A screw is provided for this 5.9.2 Installing front panel of the function module purpose on top at the front edge of the cover. f Attach the lower front panel of the function module using screws. -
Page 22: Installing Extract Air And Supply Air Pipes
INSTALLATION Installation f Pull the external hose and the thermal insulation below it over the connector. f Tuck the thermal insulation into the outer hose in such a way that the thermal insulation is no longer visible. f Invert the internal hose halfway down the connector. f Seal the transition from the external hose to the connector with the self-adhesive thermal insulation tape supplied. -
Page 23: Commissioning
INSTALLATION Commissioning 5.11.2 Cleaning apertures 6.1.3 Heat pump f Provide cleaning apertures when installing the air ducts, so - Have the insulated air hoses been installed in accordance the air ducts can be checked at regular intervals and cleaned with regulations? In particular, the outdoor air and exhaust if necessary. -
Page 24: Commissioning
INSTALLATION Commissioning 6.1.7 High limit safety cut-out f Start the appliance using the control unit MCB. Subject to de- mand, the appliance components (pumps, fans) start. With ambient temperatures of below -10 °C it is possible that the high limit safety cut-out of the electric emergency/booster heater The tap symbol appears in the display. - Page 25 INSTALLATION Commissioning f Using the "HUMIDITY PROTECTION" parameter switch on the Note humidity protection function. Never change the "PUMP SPEED DHW" parameter . The pump speed for DHW operation was optimised at the 6.2.3 Checking the minimum flow rate of the heat sink factory.
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Page 26: Recommissioning
INSTALLATION Settings Recommissioning SETTINGS „ „ f Carry out the work specified in chapter "Maintenance". f If there has been frost since the appliance was shut down, … „ HEATING check all hydraulic lines for possible frost damage. … …„ ROOM TEMPERATURES HC1 f Fill the DHW cylinder. -
Page 27: Dhw
INSTALLATION Settings … ……„ SUPPR TEMP MEAS Note After the heating circuit pump has started, the actual flow and In summer mode, the "OUTSIDE TEMP MIN CYC" param- return temperatures remain suppressed for the time set under eter will not be taken into account. The heating circuit the "SUPPR TEMP MEAS"... - Page 28 INSTALLATION Settings … ……„ BOOSTER TIMEOUT to the temperature set in the "PASTEURISATION TEMP." parameter. For effective pasteurisation, you should set this parameter to at DHW is generally heated by heat pump (compressor mode). The least 55 °C. As temperatures above 50 °C are not reached with electric emergency/booster heater is switched on only if the re- the heat pump alone, the enabled electric emergency/booster quired DHW temperature in the cylinder has not been reached...
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Page 29: Ventilation
INSTALLATION Settings The system "learns" the maximum set DHW temperature that can Option Function be reached with the compressor only. Activated passive cooling has no effect. The fans operate as programmed. Windows stay shut. If "DHW ECO" has the value "OFF", the electric emergency/booster EXTRACT AIR The supply air fan is stopped and the extract air fan output is heater starts if the heat pump reaches its application limit. - Page 30 INSTALLATION Settings Humidity protection ventilation is activated when the ventilation is MAIN MENU OVEN / FIREPLACE VENTILATION switched off (stage 0). The fans are switched off during the first 24 hours after stopping ventilation. The humidity protection function then checks every hour whether the rooms need to be ventilated. For this, the fans operate for the duration of the "HUM.
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Page 31: Dry Heating Program
INSTALLATION Settings … „ DRY HEATING PROGRAM Drying out can take a long time, as the heat pump output is in- sufficient for this purpose. If necessary, also switch on the boost- er stages. Always expect a considerably higher energy demand Material losses during drying out. -
Page 32: Evaporator
INSTALLATION Settings … …„ CONTROLLER … …„ STOP EVENT All actual values and switching states of the appliance are re- DELIVERED CONDITION corded in a circular memory. With "STOP EVENT", the recording … ……„ stops and it may be possible to draw conclusions from it as to the If you give this parameter the value "ON", then all parameters cause of the fault. -
Page 33: Refrigeration Unit
INSTALLATION Settings … „ REFRIGERATION UNIT booster heater being started while the compressor is blocked, although the compressor output should still be sufficient. COMPRESSOR CYCLING … …„ Note Here, you define the delay before the compressor switches back In summer mode and in exclusive DHW mode, the "OUT- on. -
Page 34: Process Status
INSTALLATION Settings … „ PROCESS STATUS 7.2.2 Pasteurisation These values are used for analysis in the event of a fault. To protect against the growth of legionella bacteria, the contents of the DHW cylinder are heated at adjustable intervals to the tem- …... -
Page 35: Appliance Shutdown
INSTALLATION Appliance shutdown In summer, the pump should start only once a day while the tem- Material losses perature is above the summer/winter changeover temperature f Mark the appliance to enable the recognition that ("SUMMER MODE" parameter). For this, "OUTSIDE TEMP MIN CYC" the appliance has been fully shut down and that it (P57) must be set to the total of the values "SUMMER MODE"... -
Page 36: Cleaning Defrost Pan
INSTALLATION Troubleshooting Fault messages in the programming unit f Hook the side panel of the function module back onto the appliance. If there is a fault in the system, a fault message appears on the f Hook the door on and screw the door hinge bracket back display. - Page 37 INSTALLATION Troubleshooting no. Fault Appliance response Cause Remedy 01 Anode The anode has either been con- Notify your qualified contractor. sumed or the connection cable is faulty. 02 The high limit safety The electric emergency/booster The external filter on the return is Clean the filter.
- Page 38 INSTALLATION Troubleshooting no. Fault Appliance response Cause Remedy 11 Low pressure sensor The low pressure sensor does Cause may be the low pressure Also check the sensor lead. Notify customer support if the fault not deliver a plausible signal (< 2 sensor fault.
- Page 39 INSTALLATION Troubleshooting no. Fault Appliance response Cause Remedy 28 Flow temperature The heating system switches The measured sensor values Press the electronics reset button for one second. If this faults oc- sensor in heating over to heating mode subject to have been constantly outside the curs repeatedly, notify customer support.
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Page 40: Maintenance And Cleaning
INSTALLATION Maintenance and cleaning 10. Maintenance and cleaning 10.2 Cleaning the outdoor air filter Check and clean the outdoor air filter at least once a year. WARNING ELECTROCUTION The outdoor air filter is fitted downstream of the cross-counter- f Prior to commencing any service or cleaning work, current heat exchanger. -
Page 41: 10.4 Cleaning The Condensate Drain
INSTALLATION Maintenance and cleaning f Pull the EPS cover upwards to remove. Material losses Do not use a high pressure cleaner otherwise the evap- orator fins may be bent. f Spray water across the evaporator fins. f Remove the water from the appliance using a wet suction device. -
Page 42: 10.5 Cleaning The Filter Ball Valve
INSTALLATION Maintenance and cleaning 10.5 Cleaning the filter ball valve f Close the filter ball valve by turning it 90° clockwise. f Undo the cap. f If the filter element is contaminated, connect a short hose for backwashing. 1 Anode connection at the cylinder f Place the free end of the hose in a bucket. -
Page 43: Dimensions And Connections
INSTALLATION Specification 11. Specification 11.1 Dimensions and connections 1500 1430 LWZ 304 Integral LWZ 304 Trend LWZ 404 Trend Entry electrical cables Cold water inlet Diameter DHW outlet Diameter DHW circulation entry Safety valve drain Diameter Condensate drain Diameter Heating flow Diameter Heating return Diameter Outdoor air Nominal diameter DN 315 DN 315... -
Page 44: Connection Examples
INSTALLATION Specification 11.2 Connection examples Example 3: Blocking time for electric emergency/booster heater and heat pump Example 1: Without power-OFF periods 3/N/PE ~ 50Hz 400V 3/N/PE ~ 50Hz 400V 1/N/PE ~ 50Hz 230V Supply from low tariff electricity meter 1 Heat pump 2 Electric emergency/booster heater 3 Fan/control unit L1 L2 L3 N PE... -
Page 45: Wiring Diagram
INSTALLATION Specification 11.3 Wiring diagram The appliance wiring diagram is printed on both of the following pages. The wiring diagram has been split vertically due to its size. Integral control unit Booster heater power supply Programming unit A1-X1 Connector X1, temperature sensor, 8-pin Temperature sensor, heating flow –... - Page 46 INSTALLATION Specification X32 (Speicher) 2,0 kW | LWZ 304 Trend | L WZ 404 Trend | L WZ 304 Integral www.stiebel-eltron.com...
- Page 47 INSTALLATION Specification 11.4 www.stiebel-eltron.com LWZ 304 Trend | L WZ 404 Trend | L WZ 304 Integral |...
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Page 48: Output Diagram
INSTALLATION Specification 11.5 Output diagram LWZ 304 Integral / LWZ 304 Trend Outside temperature [°C] Heating output [kW] Flow temperature 35 °C Flow temperature 35 °C with heat recovery Flow temperature 55 °C Flow temperature 55 °C with heat recovery LWZ 404 Trend Outside temperature [°C] Heating output [kW] Flow temperature 35 °C... -
Page 49: Fan Curve
INSTALLATION Specification 11.6 Fan curve LWZ 304 Integral / LWZ 304 Trend 0,35 0,40 0,45 0,50 LWZ 404 Trend 0,35 0,40 0,45 0,50 0,55 Application range 0.35 Specific power consumption 0.35 Wh/m³ Air flow rate [m³/h] 0.40 Specific power consumption 0.40 Wh/m³... -
Page 50: Pump Curve
1 Pump rate 100 % 4 Pump rate 45 % 11.8 Application range 11.8.1 Application range for heating LWZ 304 Integral / LWZ 304 Trend / LWZ 404 Trend 1 Application range limits X Outside temperature [°C] Y Flow temperature [°C] | LWZ 304 Trend | L WZ 404 Trend | L WZ 304 Integral ... -
Page 51: 11.9 Sensor Resistance Values
INSTALLATION Specification 11.9 Sensor resistance values The sensors integrated in the appliance, the sensors supplied and the outside temperature sensor are PTC and PT 1000 sensors. See chapter "Specification/Wiring diagram". The collector sensor is a PT 1000 sensor. PT 1000 sensor PTC sensor Temperature in °C Resistance in Ω Resistance in Ω... -
Page 52: 11.10 Data Table
INSTALLATION Specification 11.10 Data table The output data refers to new appliances with clean heat ex- changers. The power consumption of the integral auxiliary drives represents the maximum value and may vary subject to operating point. The power consumption of the integral auxiliary drives is included in the output details of the appliance (to EN 14511). - Page 53 INSTALLATION Specification LWZ 304 Trend LWZ 404 Trend LWZ 304 Integral Versions Refrigerant R407C R407C R407C Refrigerant charge equivalent (CO 4.44 4.79 4.44 Global warming potential of the refrigerant (GWP100) 1774 1774 1774 IP rating IP1XB IP1XB IP1XB Filter class, extract air Filter class, ventilation air Filter class, outdoor air Application range, living space m²...
- Page 54 NOTES | LWZ 304 Trend | L WZ 404 Trend | L WZ 304 Integral www.stiebel-eltron.com...
- Page 55 NOTES www.stiebel-eltron.com LWZ 304 Trend | L WZ 404 Trend | L WZ 304 Integral |...
- Page 56 Deutschland Verkauf Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel-eltron.de STIEBEL ELTRON GmbH & Co. KG Kundendienst Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst@stiebel-eltron.de Dr.-Stiebel-Straße 33 | 37603 Holzminden Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile@stiebel-eltron.de Tel.