Grundfos MIXIT Installation And Operating Instructions Manual
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Grundfos MIXIT Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
MIXIT
Installation and operating instructions

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Summary of Contents for Grundfos MIXIT

  • Page 1 GRUNDFOS INSTRUCTIONS MIXIT Installation and operating instructions...
  • Page 3 MIXIT English (GB) Installation and operating instructions ............5 Български...
  • Page 4 Uppsetningar- og notkunarleiðbeiningar............1252 MIXIT...

  • Page 5: Table Of Contents

    Operating panel for MIXIT ....24 Starting up MIXIT and connecting it with the pump ..25 1.1 Hazard statements...

  • Page 6: Target Group

    MIXIT can be used in mixing loops in all heating and cooling systems where there is a need to control the flow temperature, such as radiator heating, underfloor heating, air handling units and cooling applications.

  • Page 7: Temporary Heating

    For the flow measurement to function effectively and precisely at all flows, the viscosity must be equal to or below 2 cSt. In new buildings MIXIT can be used for dehumidification, as MIXIT In heating systems, the water must meet the requirements of the is ready to operate after the initial startup of the system.

  • Page 8: Orientations

    MIXIT can be installed both horizontally and vertically. Normally, MIXIT and the pump will be mounted in line. MIXIT installation orientations with indication of flow direction. Top: MIXIT with left B port orientation. Bottom: MIXIT with right B port orientation.

  • Page 9: Receiving The Product

    - three gaskets for MIXIT DN 32 - flanged versions: Before installing the product, we recommend that you - twelve M12 and M16 washers for MIXIT DN 32 F, DN 40 F flush the system for impurities. and DN50 F •...

  • Page 10: Preparing The Product For Installation

    4.1 Preparing the product for installation Before installing MIXIT in the pipes you must do the following: • Dismantle the insulating shells. • Optional: Remove the non-return valve. Threaded versions of MIXIT are factory fitted with a non-return valve. Some systems require a non-return valve, while other systems might not need it.

  • Page 11: Installing The Product In The Pipes

    2.6 Maximum distance between MIXIT and pump. • Position MIXIT and the pump in such a way that sufficient cooling is ensured. The ambient temperature must not exceed 50 °C. Always install the product so that the operating panel is facing forward and upright.
  • Page 12 DN32 DN40 & DN50 flanged version For the flanged versions, If a non-return valve is required, it must be installed externally to the MIXIT at the B port. Related information 2.9 Orientations 4.3 Fitting the insulating shells...

  • Page 13: Fitting The Insulating Shells

    4.3 Fitting the insulating shells Fit the insulating shells supplied with the product after it has been installed in the pipes. The shells are numbered from 1 to 3, indicating the easiest order in which to mount them.

  • Page 14: Changing The Control Box Position

    AB port position when starting up the product and selecting the AB port orientation. See 6.2 Starting up MIXIT and connecting it with the pump, step 1. Once installed in the pipes, the control box must be correctly positioned. Make sure that the control box is upright and facing forward.

  • Page 15: Connecting The Product To The Power Supply

    4.5 Connecting the product to the power supply 3. Loosen the pre-fitted cable gland to the far right. To connect MIXIT to the power supply, do as follows: 1. Remove the terminal cover on the control box by loosening the two screws.
  • Page 16 6. Tighten the cable gland to a torque of 3.0 Nm. 7. Fit the terminal cover and tighten the screws with a torque of 1.1 to 1.4 Nm. TX20 8. Switch on the power supply. Related information 5. External connections...

  • Page 17: External Connections

    Grundfos connected products must be behind a firewall or WARNING connected to a private network. Electric shock If a firewall or private network is not in place, the Grundfos product Death or serious personal injury may be subject to a cyber-security risk and becomes vulnerable to ‐...

  • Page 18: Terminal Connections Overview

    5.2 Terminal connections overview NC1 NO1 C1 NC2 NO2 C2 NC1 NO1 C1 NC1 NO1 C1 NC1 NO1 C1 NC1 NO1 C1 NC2 NO2 C2 NC2 NO2 C2 NC2 NO2 C2 NC2 NO2 C2 NC1 NO1 C1 NC2 NO2 C2 NC1 NO1 C1 NC2 NO2 C2 Pos.

  • Page 19: Radiator Heating, Terminal Connections

    Outdoor temperature sensor (Pt1000 or 0-10 V) or external setpoint input. CI02 CI03 Boiler setpoint voltage. It is used so MIXIT can control the boiler output temperature and reduce pipe heat loss. External setpoint reduce. When the digital input is activated, MIXIT reduces the setpoint by 5 °C.

  • Page 20: Underfloor Heating, Terminal Connections

    Outdoor temperature sensor (Pt1000 or 0-10 V) or external setpoint input. CI02 CI03 Boiler setpoint voltage. It is used so MIXIT can control the boiler output temperature and reduce pipe heat loss. External overheat indicator. External start/stop of both MIXIT and pump.

  • Page 21: Air Handling Unit, Terminal Connections

    Outdoor temperature sensor (Pt1000 or 0-10 V) or external setpoint input. CI02 Air temperature sensor. CI03 Boiler setpoint voltage. It is used so MIXIT can control the boiler output temperature and reduce pipe heat loss. External frost indicator. External start/stop of both MIXIT and pump.

  • Page 22: Cooling, Terminal Connections

    Fault signal. A NC/NO output signal, which will be Relay 1 active in case of fault. Run signal. A NC/NO output signal, which is active Relay 2 when MIXIT operates without alarms. The signal is inactive when frost protection. AC supply Earth Mains supply Power supply connection, 230 V ±...

  • Page 23: Combined Heating And Cooling, Terminal Connections

    (0 -10 V, 0 -20 mA, 4 - 20 mA setup via Grundfos GO) CI02 Switches between heating and cooling. When the digital input is active, MIXIT will be set up for the cooling. External start/stop of both MIXIT and pump. GENIbus, BACnet MS/TP or Modbus RS485 Signal input and output from the BMS system.

  • Page 24: Starting Up The System

    This indicates that MIXIT is being controlled by external communication equipment. Note: Once the pump and MIXIT are connected, MIXIT takes over and controls the pump. From then on the pump's operating panel is locked. Settings to the system are done via Grundfos GO Remote and the operating panel of MIXIT.

  • Page 25: Starting Up Mixit And Connecting It With The Pump

    If multi-pump function are to utilized together with MIXIT the pumps must be set up prior to paring with MIXIT. 1. Set the AB port orientation on the MIXIT unit by pressing the Up and Down buttons on the operating panel. The green AB flow arrow LEDs flash until you press the OK button.

  • Page 26: Indication Of Pump Connection

    6.3 Indication of pump connection To know which pump MIXIT is connected to, push the connect button on the MIXIT operating panel. Grundfos Eye on the corresponding pump starts to flash. Grundfos Eye for MAGNA3 Pos. Description Grundfos Eye...

  • Page 27: Setting The Product

    The app is free of charge and available for iOS and • Use Grundfos GO Remote to make the remaining settings. Android devices. 1. Open Grundfos GO Remote on your device. Make sure that 7.1 Controlling MIXIT via the operating panel Bluetooth is enabled. 7.1.1 Adjusting the setpoint Your device must be within reach of the product to establish The setpoint can be adjusted directly on the operating panel.

  • Page 28: Initial Setup Wizard

    7.4 Initial setup wizard The initial setup wizard automatically starts when Grundfos GO Remote has established connection to MIXIT for the first time. All settings done in the wizard can be changed later on. Exit the wizard by pressing X in the top left corner.

  • Page 29: General Settings

    Configure device ID for GENIbus. 2. Select Outdoor temperature sensor and press Next. • Store and recall settings as well as resetting the MIXIT unit to its factory settings. 3. Select outdoor sensor type, either Pt1000 or 0-10 V, and press Next.

  • Page 30: Functions Overview

    7.6 Functions overview All needed functions and controls of a mixing loop are built into MIXIT. Not only does this mean simple implementation and installation, but also an efficient, reliable and smooth operation. MIXIT MIXIT DYNAMIC DYNAMIC CONNECT valve unit...

  • Page 31: Temperature Controller

    Ti = 10.0 Ti = 15.0 Typical responses to a step input for PI controlled systems such as MIXIT By increasing the proportional gain (Kp) of the controller, as shown in the top row in the figure, the response rises more rapidly. If the gain is too high, undamped oscillations occur.

  • Page 32: Underfloor Overheat Protection

    When choosing the application type Heating coil, you can activate the coil preheat and frost protection functions. Coil preheat With MIXIT you can preheat the coil before allowing the fan to start. Do as follows: 1. Activate the function by pressing the grey slide-button.

  • Page 33: Selecting Pump Control Mode

    Main menu > Settings > Setpoint > Pump setpoint pump performance is automatically adjusted to the actual heat Once connected, MIXIT takes control of the pump. From then on all demand in the system by following a proportional-pressure curve pump settings are made via MIXIT. Depending on the application, within the pump's maximum and minimum proportional curve.

  • Page 34: Outdoor Temperature Compensation(Heating)

    Press Customise heat curve and define the desired setpoints for each of the five outdoor temperature points. 5. Connect a sensor cable to MIXIT. Follow the instructions given in Grundfos GO Remote and press Next. 6. A summary is given. Press Save to complete the setup.

  • Page 35: Eco Schedule

    MIXIT automatically shuts down and the pump stops. MIXIT and the pump start again when 5. You can assign more weekdays to the same schedule by the average outdoor temperature falls below the temperature pressing the weekdays at the bottom of the screen.

  • Page 36: Supply Flow Limit

    Press OK to save the setting. 7.19 Thermal power limit MIXIT can be configured to limit the thermal power delivered by the mixing loop. The power limiter automatically limits the valve opening whenever the configured power limit is exceeded.
  • Page 37 Energy monitoring register • Life time counters are available via fieldbus Registers are available for cloud, Grundfos GO Remote and via The registers for energy monitoring are shown in below table. fieldbus. • Life time, last year and year to date counters are available on...
  • Page 38 Select energy monitoring option from monitoring screen. • Read the energy monitoring registers of that specific application Grundfos GO Remote menu: (eg. heating/cooling/combined application). Grundfos Go displays the register values. It displays the values of the current system in use, ie. heating or cooling.

  • Page 39: Grundfos Buildingconnect

    An illegal value will result in a MAC address of 0. 6. If not done already, connect a bus cable to MIXIT. Follow the instructions given by Grundfos GO Remote. Press Next. 7. A summary is given. Press Save to complete the setup.

  • Page 40: Fault Finding The Product

    Alarms 1. Go to the Alarms and warnings menu or press the icon When MIXIT detects an alarm, the ! turns red and the system stops. indicating an alarm or warning on the top of the screen. The display changes between Err and the fault code, while the LEDs flash.

  • Page 41: Alarm And Warning Codes

    MIXIT unit are correct. 2. Change if needed. 8.3.7 Code 39-1001 (Valve fault) Product behaviour MIXIT has no control over the flow. To prevent high temperatures, close the isolating valves and shut down the MIXIT unit. Cause Remedy The valve is blocked and 1.
  • Page 42 3. Replace the sensor. MIXIT continues to operate. Performance at higher differential pressures might be reduced. Flow measurements, the supply flow 8.3.14 Code 132 (Missing GSC file configuration) limit and the thermal power limit are not available in Grundfos GO Cause Remedy Remote.

  • Page 43: Setpoint Limit

    MIXIT unit will automatically reset itself after the pump alarm has been solved. 8.3.23 Code 236 (Multi-pump alarm for pump 1) Product behaviour The MIXIT unit continue its operation with a single pump Cause Remedy Pumps are faulty or either of •...

  • Page 44: Service

    Electric shock 1. Once connected to Grundfos GO Remote, the app automatically Death or serious personal injury checks if MIXIT has the latest firmware installed. If a newer ‐ Switch off the power supply before you start any work version is available, a red dot in Settings menu will appear in on the product.Make sure that the power supply...
  • Page 45 2. Close the isolating valves on the A, B and AB port side of the 5. Loosen the clamp (21). valve. Make sure only to loosen the clamp. Do not remove WARNING the clamp from the control box. Pressurised system Death or serious personal injury ‐...
  • Page 46 13. Connect both sensor plug cables (20) on the sensors (20a, 20b). Make sure that the sensor plug is connected correctly as illustrated below. The MIXIT software can identify each sensor by itself, so it is optional for which sensor cable connect to which sensor.
  • Page 47 15. Assemble the control box. Make sure the positions of the stem and coupling (11) are in the zero position. 16. Tighten the clamp (21) to torque 3.5 Nm. See Tighten torques and lubricants. Make sure you only use the original clamp (21) to avoid damage to the control box.

  • Page 48: Replacing The Sensors

    MIXIT unit. Do as follows: Dismantling 1. Switch off the power supply. 2. Close the isolating valves on all three ports of the MIXIT unit. 3. Remove the insulating shells 4. Remove the terminal cover by loosening the two screws.

  • Page 49: Technical Data

    Product model WEEE mark 10.3 Sound pressure level VDE mark The sound pressure level for MIXIT without cavitation is below 40 CE mark dB(A) (pressure differential across the valve A - AB <100kPa). Production site and production code UKCA mark...

  • Page 50: Cable Requirements

    10.4 Cable requirements Cable type: H05RN-F / H07RN-F All control terminals are supplied by safety extra-low voltage (SELV) and separated. All cables used must be heat-resistant up to at least 70 °C. All cables used must be installed in accordance with EN 60204-1 and EN 50174-2:2000. Use cable clamps and double insulated cables for relays.

  • Page 51: Classes

    Analog output (AO) Sourcing capability only Voltage mode range 0-10 V Min. load between AO and GND 3 kΩ Short-circuit protection Current mode range 4-20 mA Voltage drive capability 10 V at 20 mA Open-circuit protection Tolerance ± 5 % of set value Pt1000 input (PT) Temperature measurement range -30 to +180 °C...

  • Page 52: Sensor Data

    10.8 Sensor data Vortex flow sensor, port A From 0.3 m /h depending on the MIXIT variant with a dynamic range of 1:25. Temperature range, port A and port B -10 to +120 °C ± 1.25 °C (-10 to +80 °C), ± 1.3 °C (80-90 °C), ± 2 °C (90-110 °C) Accuracy temperature, port A and port B Flow ratio, Qab/Qa: 1.1 - 10.

  • Page 53: Actuator

    10.9 Actuator Angular rotation, 360 ° both ways Ball valve, movement and type of action Multi-position Temperature for ball pressure test 125 °C Maximum rated mechanical load 15 Nm Travel time 1 minute (90 ° / 15 seconds) Limitation of operating time 1 second on / 4 seconds off 10.10 Valve Valve details...
  • Page 54 Wetted materials Valve housing Cast iron GJS500-7, CED coated O-rings EPDM (EP70) Seats Carbon reinforced PTFE Ball Brass CW614N, Ni and Cr plated Other metal parts Stainless steel Friction discs PTFE Other plastic parts PPS 40-GF Non-return valve (Threaded versions only) PPO, EPDM, stainless steel Sensors PPS, EPDM, corrosion-resistant coating...

  • Page 55: Disposing Of The Product

    This product or parts of it must be disposed of in an environmentally sound way. 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The crossed-out wheelie bin symbol on...
  • Page 56 Tel.: +387 33 592 480 Centre Turkey Fax: +387 33 590 465 29-33 Wing Hong Street & 68 King Lam GRUNDFOS Pumper A/S GRUNDFOS POMPA San. ve Tic. Ltd. Sti. www.ba.grundfos.com Street, Cheung Sha Wan Strømsveien 344 Gebze Organize Sanayi Bölgesi E-mail: grundfos@bih.net.ba...
  • Page 57 99513532 10.2022 ECM: 1352886 www.grundfos.com...

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