Related Manuals for STIEBEL ELTRON LWZ 304 SOL
Summary of Contents for STIEBEL ELTRON LWZ 304 SOL
- Page 1 INSTALLATION Central ventilation appliance with heat recovery » LWZ 304 SOL » LWZ 404 SOL...
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Page 2: Table Of Contents
CONTENTS SPECIAL INFORMATION „ „ CONTRACTOR 36 … „ ENTER CODE 36 INSTALLATION … „ FAULT SEARCH 36 General information �����������������������������������������3 … „ SWITCH ON MANUALLY 36 Relevant documents 3 … „ EVAPORATOR 37 Standardised output data 3 …... -
Page 3: Special Information
SPECIAL INFORMATION | INSTALLATION General information SPECIAL INFORMATION INSTALLATION - Observe all applicable national and regional reg- General information ulations and instructions during installation. These instructions are intended for qualified contractors. - The appliance is not approved for outdoor installation. Relevant documents - Observe the requirements concerning the instal- 296066 LWZ 304-404 SOL operation lation room (see chapter "Specification / Data Standardised output data... -
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
INSTALLATION Appliance description Required accessories ed to the extract air system, you must also allow for a supply air valve in the installation room in this particular case to prevent any - Air hose with thermal insulation, 4 m further increase in the negative pressure in the installation room. - Thermally insulated wall outlet with external wall grille The negative pressure created by the appliance in the installation room is heavily influenced by the pressure drop in the outdoor... - Page 6 INSTALLATION Appliance description 3.4.2 Cooling HC2"), then the system prepares for cooling. The display shows a snowflake. The circulation pump starts, the three-way valve The refrigeration unit of the heat pump may be reversed. In cool- changes over to the heating circuit and the "cooling" output is ing mode, heat may be extracted from the heating circuit and activated in order to, for example, open the thermostatic valves transferred to the outdoor air.
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Page 7: Preparations
INSTALLATION Preparations Preparations 4.1.1 Minimum clearances Outdoor/exhaust air connection with diverter hood Installation site To be able to open the front door freely, maintain a minimum clearance on the r.h. side and in front of the appliance. The required room height depends on whether the reversing hood is used or whether the hoses are connected directly (see chapter "Installation site / Minimum clearances"). - Page 8 INSTALLATION Preparations Outdoor/exhaust air connection with air hose Connecting outdoor air to geothermal heat exchanger ≥500 ≥2° ≥300 1 Filter box Outdoor air domestic ventilation connection option ≥300 1 Filter box | LWZ 304-404 SOL www.stiebel-eltron.com...
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Page 9: Air Routing
INSTALLATION Preparations Air routing Prevent air stream "short circuits". The air intake and discharge apertures in the external walls should be arranged around cor- ners. When installing the air intake and discharge apertures on the same side of the building, maintain a minimum clearance of at least 2 m between apertures. -
Page 10: Electrical Installation
INSTALLATION Preparations Oxygen diffusion The separation can also be made later, by cutting the screed all the way around the appliance. Material losses Installation on screed with impact sound insulation Avoid open heating systems and plastic pipes in under- floor heating systems which are permeable to oxygen. If plastic pipes in underfloor heating systems that are permeable to oxygen, or open heating systems are used, oxygen diffusion can cause corrosion on the steel components of the indirect coil... -
Page 11: Installation
INSTALLATION Installation 4.6.2 Cylinder module The fascia and fascia frame that are fitted to the front of the ap- pliance later, hang for shipping from the factory on the l.h. side of the function module. Material losses During transport, never hold the cylinder module by its f Lift the fascia frame slightly and remove the fascia from the connection pipes, as these would bend out of shape. - Page 12 INSTALLATION Installation f Remove the upper front panel. f Remove the round knock-out from the back panel of the function module. f Cut a hole for a folded spiral-seam tube DN 160 in the centre of the knock-out in the EPS thermal insulation. f Push the folded spiral-seam tube through the hole (max. 30 mm deep).
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Page 13: 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 14: Connecting Modules
INSTALLATION Installation Cylinder temperature sensor and anode cable Note f Remove the cable tie that tie together the electrical cables At least 40 mm of the pipes must be accessible. If neces- of the anode terminal and the cylinder temperature sensor sary, remove any protruding foam insulation. - Page 15 INSTALLATION Installation Inserting the terminal bracket into the cylinder module f Push the terminal bracket through the aperture located at the top r.h. side of the cylinder module. Pushing the cylinder and the function modules together Note An air hose to capture the differential pressure runs 1 Terminal bracket along the l.h.
- Page 16 INSTALLATION Installation Connecting the function module and the cylinder module hydraulically 1 DHW flow 2 Heating flow 3 Common return The hydraulic connection between the function and cylinder module is provided by three pipes: DHW flow, heating flow and common return. f Make sure that the caps have been removed from the pipes.
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Page 17: Heating Water Connection
INSTALLATION Installation f Thoroughly flush the pipework before connecting the ap- pliance. Foreign bodies such as welding pearls, rust, sand, sealant, etc. can impair the operational reliability of the ap- pliance, and can lead to the condenser becoming blocked. f Remove the protective caps from the heating flow and heat- ing return connections. -
Page 18: Water Connection
INSTALLATION Installation Water connection Note With a conductivity >1000 μS/cm, desalination treatment Material losses is recommended in order to avoid corrosion. Never install the push-fit connectors in the DHW line. Never install the push-fit connectors to the solar flow or Note solar return connections. -
Page 19: Filling And Venting The Heating System
INSTALLATION Installation Filling and venting the heating system Depending on the heating system, check whether the expansion vessels in the appliance meet the requirements (see chapter "Spec- ification") and whether their pre-charge pressure is sufficient. Checking the expansion vessels 1 Air vent valve on the multi function assembly f Open the air vent valve of the multi function assembly by turning anti-clockwise. -
Page 20: Condensate Drain And Overpressure Valve
INSTALLATION Installation f Determine the "PRESSURE HTG CIRC" value for one of the Material losses three favourites. For this, navigate from the default display to To ensure the condensate drains perfectly, never kink the the "FAVOURITES" parameter. hose. If necessary, create a loop. f Route the condensate drain pipe with a sufficient WEDNESDAY 10 SEPT 14 10:23 H... - Page 21 INSTALLATION Installation 5.9.2 Cable routing The SL terminal is a 230 V input for activating ventilation by means of a pushbutton. f Push all connecting cables and sensor leads through one of the cable entries located at the top of the back panel of the The FA terminal is a 230 V output for switching an automatically cylinder module.
- Page 22 INSTALLATION Installation 5.9.8 Connecting sensors 1 Sensor well for the cylinder temperature sensor (economy mode/buffer mode) 2 Sensor well for the cylinder temperature sensor (Comfort) Outside temperature sensor Mixer circuit flow temperature sensor Room temperature sensor Solar temperature sensor Control connection for the solar circuit pump (control with 0-10 V or PWM signal) Control connection for the pump of heating circuit 2 (control with 0-10 V or PWM signal)
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Page 23: Fitting The Appliance Casing
INSTALLATION Installation 5.10 Fitting the appliance casing 5.9.9 Connecting the external programming unit 5.10.1 Installing front panel and cover of the cylinder module Note Check whether the room in which the external program- f On the cylinder module, undo the screw set into the r.h. side ming unit is installed receives a lot of warmth, for ex- of the front panel. -
Page 24: Outdoor Air And Exhaust Air Hose Installation
INSTALLATION Installation 5.10.4 Fitting the fascia 5.11.1 Information on routing the air hoses f Use a sharp knife to trim the hose to the required length. Cut f Hook the rear fascia frame into the hooks provided on the the Bowden core using wire cutters. appliance front. -
Page 25: Installing Extract Air And Supply Air Pipes
INSTALLATION Installation Material losses Always cover the air intake and discharge with wire grilles, and secure the hoses against slippage. Hose connection panels or wall outlets with hose connection and grilles are available for hose connections to exterior wall knock- outs or cellar windows. -
Page 26: Commissioning ��������������������������������������������� 26 11.7 Application Range
INSTALLATION Commissioning Commissioning WARNING Injury Only qualified contractors may commission this appli- ance and instruct the user. Material losses Never operate the ventilation system if there are high lev- 1 Plastic union nut els of dust inside the building or outside in the immediate vicinity, as this could block the filter. -
Page 27: Manual Mode
INSTALLATION Commissioning If the terminal addresses were not assigned, there would be con- Once the appliance has operated in the dry heating program flicts in communication between the appliance and the program- without fault for at least two days you can enable the electric ming units, as every programming unit is given the same standard emergency/booster heater. -
Page 28: Recommissioning
INSTALLATION Settings f Operate the appliance in heating mode. For this, switch the f Set the "PARTY STAGE" parameter to 3. appliance to "MANUAL MODE", for example. Note down the f Set the "DUAL-MODE POINT" parameter (P78) in accordance previously set value and set the "DHW SET MANUAL" param- with the heat demand of the building. -
Page 29: Diagnosis
INSTALLATION Settings DIAGNOSIS „ „ … ……„ MAX FLOW TEMP HTG. See operating instructions. Under "MAX FLOW TEMP HTG.", the maximum flow temperature can be set according to local conditions, for example to protect an underfloor heating system from excessive temperatures. „ „ PROGRAMS If this temperature is exceeded, the compressor and electric emergency/booster heater are switched off. -
Page 30: Dhw
INSTALLATION Settings … ……„ BOOSTER TIMEOUT Asymmetry of hystereses Direct line: P79 If the heating temperature severely overshoots the set tempera- ture, it may be necessary to reduce the hystereses above the set After starting the heat pump when heat demand is below the dual value. - Page 31 INSTALLATION Settings Note DHW heating may possibly not complete if the electric emergency/booster heater has been blocked because the high limit safety cut-out has tripped or the electric emergency/booster heater has been switched off via an external MCB. The entire room heating system is then blocked for the time set under "MAX DHW HTG DUR.".
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Page 32: Ventilation
INSTALLATION Settings … „ VENTILATION Option Function Activated passive cooling has no effect. The fans operate as programmed. Windows stay shut. FLOW RATE … …„ EXTRACT AIR The supply air fan is stopped and the extract air fan out- put is increased by 20 % (e.g. from 47 % to 67 %). This …... - Page 33 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 34: Cooling
INSTALLATION Settings … „ COOLING … „ SOLAR POWER The "COOLING" menu will only be shown if the appliance recognis- Option es an external programming unit connected to the BUS. … …„ SOLAR HYSTERESIS … …„ COLLECTOR TEMP LIMIT … …„... -
Page 35: Dry Heating Program
INSTALLATION Settings … …„ COLLECTOR PROTECTION Dry heating program curve See chapter "Collector protection temperature". … …„ PRIORITY SOLAR With parameter "PRIORITY SOLAR" you can select the priority for the cooling mode if a solar thermal system is connected. Possible settings are "SOLAR", "COOLING"... -
Page 36: Contractor
INSTALLATION Settings … „ COMMISSIONING … ……„ APPLIANCE TYPE You can set the appliance type here. PROGRAMMING UNIT … …„ Note Changing the "APPLIANCE TYPE" parameter can result in … ……„ TOUCH SENSITIVITY incorrect functioning of the appliance; it must therefore This parameter enables you to select the touch sensitivity of the be changed only by our service department. -
Page 37: Evaporator
INSTALLATION Settings … …„ EXPELLED AIR SPEED Parameter Comments … …„ MIXER OPEN Direct line: P48 … …„ MIXER CLOSED … …„ DIVERTER VALVE This parameter enables you to set the speed of the exhaust air fans … …„ COMPRESSOR as a percentage of the maximum speed. -
Page 38: Condensate Pump (No Function)
INSTALLATION Settings … „ PROCESS VALUES Note These values are used for analysis in the event of a fault. In summer mode and in exclusive DHW mode, the "OUT- SIDE TEMP MIN CYC" parameter will not be taken into … …„... -
Page 39: Economy Settings
INSTALLATION Settings Economy settings Note The appliance has been set up at the factory to give priority to On account of the moisture contained in building materi- als, new buildings have a higher heat demand than will providing heating and DHW conveniently under all circumstanc- es. -
Page 40: Shutdown
INSTALLATION Shutdown Shutdown Troubleshooting Exhaust air fan is catching WARNING Injury There will be no ventilation if the appliance is taken out If the exhaust air fan drags, return it into its correct position. of use. This may result to the development of mould fun- gus and damage to the building. -
Page 41: Circulation Pump
INSTALLATION Troubleshooting Circulation pump If the circulation pump detects air in the heating circuit, it stops. Reset the heating circuit pump by switching off the control voltage for at least 30 seconds. Fault messages in the programming unit If there is a fault in the system, a fault message appears on the display. - Page 42 INSTALLATION Troubleshooting No. Fault Appliance response Cause Remedy High pressure switch The high pressure switch has re- The external filter on the return is Clean the filter. sponded five times in five hours. contaminated. The heat pump will shut down. The pump has seized.
- Page 43 INSTALLATION Troubleshooting No. Fault Appliance response Cause Remedy DHW temperature DHW heating has developed The electric emergency/booster Check whether the high limit safety cut-out for the emergency/ a fault if the set DHW temper- heater stages for DHW operation are booster heater stages has responded (see fault 02).
- Page 44 INSTALLATION Troubleshooting No. Fault Appliance response Cause Remedy EEProm Press the electronics reset button. If this faults occurs repeat- edly, notify customer support. Replace the control unit. Extract air humidity The actual values captured by a Press the electronics reset button. If this faults occurs repeat- sensor humidity sensor are continuously edly, notify customer support.
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Page 45: Maintenance And Cleaning
INSTALLATION Maintenance and cleaning 10. Maintenance and cleaning 10.2 Cleaning the outdoor air filter The outdoor air filter is fitted downstream of the cross-counter- WARNING ELECTROCUTION current heat exchanger. f Prior to commencing any service or cleaning work, isolate the appliance across all poles from the power supply. -
Page 46: Cleaning The Condensate Drain
INSTALLATION Maintenance and cleaning f Spray water across the evaporator fins. f Remove the water from the appliance using a wet suction device. f Remove contaminants and blockages. Note Check the condensate drain regularly, at least once a year. 10.4 Cleaning the condensate drain Check the condensate drain regularly. -
Page 47: Replacing The Anode
INSTALLATION Maintenance and cleaning 10.6 Replacing the anode 10.7 Checking the diaphragm expansion vessels f Isolate the appliance from the power supply. f Close the shut-off valve in the cold water supply. f Remove the cover from the cylinder module. f Remove the l.h. front panel of the cylinder module. f Briefly open the lowest DHW draw-off point. -
Page 48: Specification
INSTALLATION Specification 11. Specification 11.1 Dimensions and connections 1430 LWZ 304 SOL LWZ 404 SOL Entry electrical cables Cold water inlet Diameter DHW outlet Diameter DHW circulation wall duct / DHW circulation entry Safety valve drain Diameter Solar flow Diameter Solar return Diameter Condensate drain Diameter Heating flow Diameter... -
Page 49: Wiring Diagram
INSTALLATION Specification 11.2 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 Power supply Programming unit Terminal, 3-way valve, heating circuit 2 and solar circuit Temperature sensor, heating flow –... - Page 50 INSTALLATION Specification M5 - X34 M4 - X33 ext. Umschalt- ventil Fenster Auf (FA) Schnelllüftung (SL) Solarpumpe (P-S) Ofen & Kamin (O/K) Kühlen (KUE) Pumpe HK2 (P-HK2) Mischer (HMV) M6 - X35 Fenster Auf Lüftung Nacht Ölsumpfheizung Solarpumpe Pumpe HK2 2,0 kW Synchronmotor Heizen Synchronmotor WW...
- Page 51 INSTALLATION Specification zu B17 zu B18 11 12 13 14 15 16 17 18 19 20 21 22 23 24 0-10V 0-10V --> Bodenblech --> Abtauwanne grün braun --> Feuchte weiß --> Pwasser Hzg. braun weiß braun weiß schwarz B1/P5 blau braun Fenster Auf...
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Page 52: Connection Examples
INSTALLATION Specification 11.3 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 53: Output Diagram
INSTALLATION Specification 11.4 Output diagram LWZ 304 SOL Outside temperature [°C] Heating output [kW] Flow temperature 35 °C Flow temperature 35 °C with heat recovery at 170 m Flow temperature 55 °C Flow temperature 55 °C with heat recovery at 170 m LWZ 404 SOL Outside temperature [°C] Heating output [kW] Flow temperature 35 °C... -
Page 54: Fan Curve
INSTALLATION Specification 11.5 Fan curve Flow rate [m External pressure [Pa] LWZ 304/404 SOL Maximum flow rate LWZ 304/404 SOL 11.6 Pump curve Available external head X Flow rate [m Y Pressure [hPa] 1 Pump rate 100 % 2 Pump rate 85 % 3 Pump rate 65 % 4 Pump rate 45 % | ... -
Page 55: Sensor Resistance Values
2417 X Outside temperature [°C] 1232 2597 Y Flow temperature [°C] 1271 2785 1309 2980 Application range for cooling LWZ 304 SOL 1347 3182 1385 3392 1423 1461 Note When measuring with a multimeter, the resistance values serve only to identify faulty or incorrect sensors. Measur- ing with a multimeter is too imprecise to test for accuracy. -
Page 56: Data Table
INSTALLATION Specification 11.9 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 57 INSTALLATION Specification LWZ 304 SOL LWZ 404 SOL Versions Refrigerant R407C R407c IP rating IP1XB IP1XB Filter class, extract air Filter class, ventilation air Filter class, outdoor air Application range, living space m² < 200 < 220 Refrigerant charge Dimensions Height when tilted 2020 2020 Height 1885...
- Page 58 NOTES | LWZ 304-404 SOL www.stiebel-eltron.com...
- Page 59 NOTES www.stiebel-eltron.com LWZ 304-404 SOL |...
- Page 60 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.