Heat pump with electric drive, 1 and 2-stage, brine/water heat pump: 20.5 to 84.6 kw, with conversion kit to water/water heat pump: 25.4 to 104.6 kw (92 pages)
VIESMANN Operating instructions for the system user Compact heat pump with electric drive, type AWH-I, AWH-I-M, AWH-O, AWH-O-M VITOCAL 350-A Please keep safe. 5414 835 GB 5/2009...
Safety instructions For your safety Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained Danger Incorrect work on the system can Danger lead to life-threatening acci- This symbol warns against the dents. risk of injury. Work on electrical equipment must only be carried out by a Please note...
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Safety instructions For your safety (cont.) Auxiliary components, spare and wearing parts Please note Components that are not tested with the system may cause sys- tem damage, or may affect its functions. Installation or replacement work must only be carried out by quali- fied personnel.
Index Index Introductory information Device description....................Your system is preset at the factory..............Power-OFF period....................Where to find the controls Summary of controls and indicators..............■ Opening the control unit..................■ Display and control elements................10 ■ Symbols on the display..................11 ■...
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Index Index Selecting DHW heating Selecting constant DHW heating................27 ■ Setting the DHW temperature................27 ■ Setting switching times (time program)............. 28 ■ Setting switching times for the auxiliary output (e.g. DHW circulation pump, if installed)......................29 Selecting DHW heating only once................ 31 ■...
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Index Index (cont.) Inspection and service..................51 ■ DHW cylinder (if installed)................. 51 ■ Safety valve (DHW cylinder)................52 ■ Potable water filter (if installed)................. 52 Energy saving tips..................... 53 Keyword index....................54...
Introductory information Device description The Vitocal 350-A is an air/water heat pump with an electric drive. ■ Up to 3 heating circuits (2 with mixers) can be heated. ■ Any peak heat demand can be cov- ered by an integral electric heater (mono-energetic operation, acces- sory).
Introductory information Power-OFF period D ° During any power interruption by the § power supply utility, the control unit dis- plays the text shown in the diagram. 51 °C 21 °C 22 °C 23 °C 21 C The control unit restarts with the selected C5 Power-OFF operating mode as soon as the power supply utility restores the power supply.
Where to find the controls Summary of controls and indicators You can change all the settings for your heat pump centrally via the programming unit. You can also make some adjustments via the remote control, if your system is equip- ped with one.
Where to find the controls Summary of controls and indicators (cont.) Display and control elements A ON/OFF switch C ON indicator (green) B Fault indicator (red) D Programming unit D ° § 51 °C 21 °C 22 °C 23 °C 21 °C THU 27.03.08 11:55 TYPE VX.XX...
Where to find the controls Summary of controls and indicators (cont.) Main menu A: Information Cylinder DHW t. B: Appliance settings C: DHW F: Reset K "Standard display" key R Display with main menu P Selection keys Display layout If more than seven menus are available, navigate to them with selection key At any one time, the display shows "Further menu items".
Where to find the controls Summary of controls and indicators (cont.) 4 Holiday program enabled ² Building drying enabled _ Party mode enabled ( Winter mode enabled 8 DHW cylinder heating enabled % Summer mode enabled 5 Frost protection enabled h Manual mode enabled Heating circuits Your building may be heated by several...
Menu structure Menu structure overview The menu structure that can be called up on your display is subject to the system version. A See the following diagram...
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Menu structure Menu structure overview (cont.) A See the previous diagram...
Start-up/shutdown Starting the heat pump The commissioning and adaptation of the control unit to local conditions and the structural characteristics of the building must be carried out by your heating contrac- tor. 3. Switch system ON/OFF switch A 1. Check the heating system pressure at the pressure gauge: The system pressure is too low if the After a short time, the current operat-...
Start-up/shutdown Shutting down the heat pump (cont.) If you do not want to use your heat Where necessary, your contractor can pump, you can shut it down at the system then take certain steps, e.g. protecting ON/OFF switch. the system against frost. ■...
Start-up/shutdown Starting central heating and DHW heating (cont.) Central heating with standard room temperature Set the operating mode selector to s. ■ Central heating with the standard room temperature is activated all day with weather-compensated control (see page 20) ■ DHW heating is activated according to the set switching times and operating modes (see page 28) ■...
Start-up/shutdown Stopping central and DHW heating – standby mode You do not want to heat rooms or have DHW available. Set the operating mode selector to 9. ■ Frost protection for the heat pump, DHW cylinder and heating water buffer cylinder (if installed) is enabled ■...
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Start-up/shutdown Manual mode (cont.) Set the operating mode selector to h. ■ Unregulated heating of the heating circuits connected takes place with a set flow temperature of up to 45 °C ■ DHW heating to the second set tem- perature (delivered condition 60 °C; see page 32)
Adjusting the room temperature Setting a permanent room temperature Observe the following points if you 3. The selected switching times deter- want to activate central heating: mine when central heating according to the time program (u) will be activa- 1. s, m or u must be selected at the ted, with standard or reduced room operating mode selector: temperature (see page 22).
Adjusting the room temperature Setting a permanent room temperature (cont.) Select the required temperature at rotary selector s. If several heating circuits are installed, this change will affect all heating cir- cuits. Note If a remote control (e.g. Vitotrol 200) is connected to a heating circuit, the room temperature set via the remote control applies to this heating circuit.
Adjusting the room temperature Setting a permanent room temperature (cont.) [°C] Heating circ. 1 5. !/1 for the required temper- 20.0 Room t standard ature. 16.0 Room t reduced ª restores the selec- Switching times HC ted temperature to the Heating curve level delivered condition.
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Adjusting the room temperature Setting a permanent room temperature (cont.) Note ■ You can set switching times individu- With the "FIXED VALUE" operating ally for the following days or parts of mode, the system heats to the maximum the week: flow temperature "Max.
Adjusting the room temperature Setting a permanent room temperature (cont.) 8. > for the time (time top 10. Proceed as described in points 6 to left / position of arrow 9 to set further switching times. bottom) from which the operating mode should 11.
Adjusting the room temperature Changing the room temperature for a few days… (cont.) Press the following keys: 5. -/+ for the required entry (date and time for begin- 1. "Device settings" ning/end of holiday) 2. "Date and time" 6. "OK" to confirm and exit the menu Symbol 4 appears on...
Adjusting the room temperature Changing the room temperature for a few hours… (cont.) Note 2. "Date and time" ■ If several heating circuits are installed, the party program will affect all heating 3. "Party program" circuits. ■ If a remote control (e.g. Vitotrol 200) is 4.
Selecting DHW heating Selecting constant DHW heating Note If several heating circuits are installed, DHW heating applies to all heating circuits. Observe the following points if you 3. When DHW will be heated according want to adjust the DHW heating: to the time program (u), and when the DHW circulation pump (if installed) will 1.
Selecting DHW heating Selecting constant DHW heating (cont.) Press the following keys: 5. !/1 for the required temper- ature. 1. "Device settings" ª restores the tem- perature to the delivered 2. "Programming" condition. 3. "DHW" 6. "BACK" to confirm and exit the menu.
Selecting DHW heating Selecting constant DHW heating (cont.) Switching times DHW 0 3 6 9 12 15 18 21 24 20:00-20:14 MONDAY TUESDAY WEDNESDAY THURSDAY 4: 2. TEMP. FRIDAY 3: STANDARD SATURDAY SUNDAY 2: TOP 1: OFF >> VALUE SET>> The operating mode for the selected 7.
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Selecting DHW heating Selecting constant DHW heating (cont.) You can select when and how (con- ■ You can set switching times individu- stantly or cycling) the DHW circulation ally for the following days or parts of pump should run ("DHWcirServ"). the week: ■...
Selecting DHW heating Selecting constant DHW heating (cont.) 8. > for the time (time top 10. Proceed as described in points 6 to left / position of arrow 9 for the setting of further switching bottom) from which the times. operating mode should be changed.
Selecting DHW heating Selecting DHW heating only once (cont.) If you want to terminate DHW heating 2. "NO" to confirm prematurely, press the following keys: 1. "DHW" DHW auxiliary function (pasteurisation) As additional protection to ensure bacteria are killed, you can select "Aux. func- tion".
Selecting DHW heating Set temperature 2 (DHW) (cont.) Note Press the following keys: The "Second set temperature" cannot be set higher than the maximum DHW 1. "Device settings" cylinder temperature. The maximum DHW cylinder temperature can only be 2. "Programming" changed by your heating contractor.
Selecting DHW heating Stop optimisation for cylinder heating Stop optimisation ensures that DHW is fully heated at the end of standard mode. Note This function is only enabled if switching times have been set for the DHW cylin- der (see page 28). [1/0] 50.0 Cylinder DHW t.
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Further adjustments Switching times for the heating water buffer cylinder ■ At the factory, "STANDARD" is set for ■ You can set switching times individu- every day from 0:00 to 24:00 h, i.e. all ally for the following days or parts of rooms are heated all day to the stand- the week: ard room temperature.
Further adjustments Switching times for the heating water buffer… (cont.) The operating mode for the selected 7. "VALUE" for the required operat- period (15 min block, top left) is dis- ing mode played by bar height and number (1, 2, 3 or 4).
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Further adjustments Modifying the heat pump heating characteristics (cont.) 4. y/x for "Heating curve level" Heating curve level = 0 Slope Heating curve = 0.6 "Heat. curve slope" 5. ? to open the selected menu 6. «/¬ for the required slope + / - --- + --- 7.
Further adjustments Modifying the heat pump heating characteristics (cont.) Problem Measures Example (relative to the delivered condition) The living space is too hot Adjust the heating HEATING CURVE LEVEL = -1 during spring/autumn curve level to a lower HEAT. CURVE INCLI. = 0.6 and during the heating value (e.g.
Further adjustments Language selection Language 2. "Programming" Deutsch English 3. "System definition" Français Italiano 4. ? to open the "Lan- Nederlands guage" menu Svenska Suomi 5. y/x for the required lan- Polski guage BACK 6. "OK" to confirm and exit the Press the following keys: menu 1.
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Further adjustments Restoring the delivered condition (Reset) (cont.) Reset ¼ System definition: Restore factory settings? Back Press the following keys: 1. "Reset" "System definition" appears 2. "ALL" if you want to simultane- ously reset all adjustable settings and values includ- ing the time programs.
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Scanning options Scanning temperatures You can scan the temperatures of the Press the following keys: following temperature sensors, fitted inside or outside the heat pump: 1. "Information" ■ Outside ■ Evaporator 2. "Sensor temperatures" ■ Flow primary (air inlet temperature) ■...
Scanning options Scanning switching times Switching times HC1 4. > to start the graphic display. 0 3 6 9 12 15 18 21 24 Time is displayed in the 06:00-06:14 MONDAY top l.h. corner; the selec- TUESDAY ted operating mode to the WEDNESDAY THURSDAY right of the graphic (for an...
Scanning options Scanning statistics (cont.) ■ Central fault mess. 2. "Statistics" ■ Heating/DHW ■ Cyl. primary pump 3. "Hours run" ■ Swimming pool ■ Lag heat pump 1 "Average runtime" ■ Lag heat pump 2 ■ Lag heat pump 3 "No.
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Back A to N For an explanation of the con- Fan as a symbol for the tents of columns A to M, Vitocal 350-A heat pump see the following tables. Columns C and L, and area N, are blank. Î...
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Scanning options Operating conditions in the system overview (cont.) Ï ¾ Solar circuit Heating water buffer cylinder Collector temperature (outlet Heating water buffer cylinder temperature) temperature Set temperature, heating water buffer cylinder Collector temperature (inlet tem- perature) System flow temperature Solar cylinder DHW temperature Solar cylinder circulation pump System flow...
Scanning options Operating conditions in the system overview (cont.) Heating circuit 3 (with mixer) 21:01 Time Room temperature SPF: The seasonal performance fac- tor (SPF) of the refrigerant cir- Set room temperature cuit is 3.9 Heating circuit flow temperature The seasonal performance fac- Set flow temperature, heating cir- tor is the ratio of the amount of cuit...
Scanning options Scanning messages (cont.) D ° § 51 °C 95 °C 22 °C 23 °C 21 °C B1 KM BUS EEV THU 27.03.08 11:55 TYPE VX.XX A Fault display C Message symbol B Message If your heat pump has a message pend- You can check the message B on the ing, this will be indicated on display B display yourself, and notify your heating...
Scanning options Scanning messages (cont.) Acknowledging messages Fault messages 4. "TIME" for the time when the B1 KM BUS EEV message was issued B4 AD converter Return to the message 39 primary return sensor display with "MES- SAG". 5. "BACK" to exit the menu Back TIME...
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Scanning options Scanning messages (cont.) Note ■ Messages cannot be acknowledged in the message history. ■ Messages are listed in order of occur- rence with the most recent first.
What to do if... No display indication Cause Remedy Power failure/fault in the power supply. Appliance starts automatically as soon as power is restored or the fault has been remedied. The MCB has responded. Notify your local contractor. Appliance was switched off at the system Start appliance (see page 15).
Maintenance Cleaning All equipment can be cleaned with a commercially available domestic clean- ing agent (non-scouring). Water must not be allowed to enter the heat pump. Inspection and service Inspection and maintenance of your Regular maintenance ensures trouble- heating system is prescribed by the free, energy efficient, environmentally Energy Savings Order and DIN 4755, responsible and safe heating.
Maintenance Inspection and service (cont.) Safety valve (DHW cylinder) The safety valve function should be checked every six months by venting, either by the system user or the local heating contractor. The valve seat may become contaminated (see the valve manufacturer's instructions).
Energy saving tips Energy saving tips With the following steps, you can save additional energy: ■ Ventilate correctly: Open windows 1 fully for a short time and at the same time close thermo- static valves 2. ■ Never overheat: Endeavour to achieve a room temper- ature of 20 °C;...
Keyword index Keyword index Displaying messages......47 Auxiliary output........29 Display window........10 Average runtimes.......42 Electric heating........15 Buffer cylinder......7, 8, 16, 35 Building drying........12 Factory settings........7 Fault display........46 Central heating Fault indicator........10 ■ According to the time Fault messages......46, 47 program......16, 20, 27 Fixed value regulator......11 ■...
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Keyword index Keyword index (cont.) Operating modes....16, 17, 22 Individual time program......23 ■ For auxiliary output......30 ■ For auxiliary output......30 ■ For DHW.........28 ■ For DHW.........28 ■ For DHW circulation pump.....30 ■ For the heating water buffer ■ Heating water buffer cylinder..35 cylinder...........35 Operating mode Inspection...........51...
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Keyword index Keyword index (cont.) Scanning switching times....42 Standby mode......11, 15, 18 Scanning temperatures......41 Starting the appliance......15 Scanning the energy statement..43 Starting the control unit......15 Scanning time programs....42 Starting the heat pump.......15 Selection keys........11 Starting the system......15 Service..........51 Start optimisation.......28 Set DHW temperature......27 ■...
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Contact your local contractor if you have any questions regarding the maintenance and repair of your system. You may, for example, find local contractors on the internet under www.viessmann.com. Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford...
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