Grundfos MIXIT Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS

MIXIT

Installation and operating instructions

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Page 1 GRUNDFOS INSTRUCTIONS MIXIT Installation and operating instructions...
Page 3 MIXIT English (GB) Installation and operating instructions ............4...
Page 4: Table Of Contents
Starting up the system ..... 24 Operating panel for MIXIT ....24 Read this document before you install the product.
Page 5: Target Group
MIXIT is ready to operate after the initial startup of the system. Any additional wiring for MIXIT can be completed later, and the final setup is done via Grundfos GO Remote.
Page 6: Identification
2.4 Identification 2.4.2 Type key Example: MIXIT 25-10 R NRV 2.4.1 Nameplate Example: MIXIT DYNAMIC 32-16 L F Codes Key to codes MIXIT Type range. Variant including standard functionalities. Variant including both standard and DYNAMIC DYNAMIC upgrade functionalities. Nominal diameter (DN) of inlet and outlet ports [mm].
Page 7: Receiving The Product
- three gaskets for MIXIT DN 32 Related information - flanged versions: 12.1 Ambient conditions - twelve M12 and M16 washers for MIXIT DN 32 F, DN 40 F, DN 50 F 4.2 Minimum space • bag placed inside the MIXIT cover containing: MIXIT requires a minimum space on all sides of the product.
Page 8: Orientation Of The B Port
Check if your MIXIT valve unit is delivered with a left-oriented B port (MIXIT L) or a right-oriented B port (MIXIT R). The MIXIT valve unit and the pump are most often mounted in line. MIXIT can be installed in horizontal or vertical position, depending on the orientation of the B port and the direction of the supply flow.
Page 9: Mechanical Installation
5. Mechanical installation 5.1 Preparing the product for installation Before installing MIXIT in the pipes you must do the following: WARNING • Dismantle the insulating shells. Lifting hazard Death or serious personal injury • Optional: Remove the non-return valve. Threaded versions of ‐...
Page 10: Installing The Product In The Pipes
• Position MIXIT and the pump in such a way that sufficient 1. Locate port B on the valve body. Loosen the retainer with a cooling is ensured. The ambient temperature must not exceed wrench and remove it from the valve body.
Page 11 Tighten the union nuts. 3. Flanged pipe connection: Perform below steps to mount the product in the pipes. If a non-return valve is required, it must be installed externally to the MIXIT at the B port. a. Place three gaskets as illustrated below.
Page 12: Fitting The Insulating Shells
Insulating shells fitted on the flanged version Related information Related information 5.2 Installing the product in the pipes 4.2 Minimum space 4.3 Maximum distance between MIXIT and the pump 4.4 Orientation of the B port 5.3 Fitting the insulating shells 5.4 Changing the control box position...
Page 13: Changing The Control Box Position
6 - 7 mm 2. When you sense that the control box loosens from the valve Related information body, turn the control box to the desired position. 5.2 Installing the product in the pipes 8.2 Starting up MIXIT and connecting it with the pump...
Page 14: Electrical Connection
The system incorporates thermal protection in order to prevent slow overloading and blocking. To connect MIXIT to the power supply, do as follows: 1. Remove the terminal cover on the control box by loosening the two screws. Locate the bag with one cable gland and six terminal plugs.
Page 15 5. Connect the conductors in the power supply terminal. Insert the 8. Switch on the power supply. power supply terminal in the control box. Related information 7. External connections 7.2 Terminal connections overview 6. Tighten the cable gland to a torque of 3.0 Nm. 7.
Page 16: External Connections
Switch off the power supply before you start any work on the product. Make sure that the power supply Only connect the MIXIT unit behind a firewall or to a cannot be switched on accidentally. private network with no connection to the internet.
Page 17: Bluetooth Information
Password protection is optional and is managed in the Grundfos CAUTION GO Remote app. The user defines the PIN code. Radiation 1. To create or change a PIN code, open Grundfos GO Remote. Minor or moderate personal injury ‐ Locate the product at a minimum distance of 20 cm 2.
Page 18: Terminal Connections Overview
NC1 NO1 C1 NC2 NO2 C2 NC1 NO1 C1 NC2 NO2 C2 Pos. Description Ethernet RJ45 (BACnet IP, Modbus TCP, Grundfos BuildingConnect) Configurable I/O Configurable I/O RS-485 transceiver (BACnet MS/TP, Modbus RTU) Relay 1 Relay 2 Mains supply. Carry out the electrical connection and protection according to local regulations.
Page 19: Radiator Heating, Terminal Connections
External setpoint reduce. When the digital input is activated, MIXIT reduces the setpoint by 5 °C. External start/stop of both MIXIT and pump. When external stop is activated, MIXIT closes the valve and the pump stops. BACnet MS/TP Signal input and output from the BMS system. Via one RS-485 of the listed protocol options.
Page 20: Underfloor Heating, Terminal Connections
External overheat indicator. When activated, MIXIT closes the valve and the pump stops. External start/stop of both MIXIT and pump. external stop is activated, MIXIT closes the valve and the pump stops. BACnet MS/TP RS-485 Signal input and output from the BMS system.
Page 21: Air Handling Unit, Terminal Connections
External setpoint input or position control (0-10 V, 0-20 mA or 4-20 mA). Air temperature sensor or daisy chain. Use daisy chain CI02 to connect two or more MIXIT units to support supply source setpoint. Supply source setpoint voltage. Enables MIXIT to CI03 control the supply source output temperature and reduce pipe heat loss.
Page 22: Cooling, Terminal Connections
CI03 control the supply source output temperature and reduce pipe heat loss. External start/stop of both MIXIT and pump. When external stop is activated, MIXIT closes the valve and the pump stops. BACnet MS/TP RS-485 Signal input and output from the BMS system.
Page 23: Combined Heating And Cooling, Terminal Connections
Switches between heating and cooling. When the digital input is active, MIXIT will be in the cooling mode. The default setting is in heating mode. External start/stop of both MIXIT and pump. When external stop is activated, MIXIT closes the valve and the pump stops.
Page 24: Starting Up The System
Once the pump and MIXIT are connected, MIXIT takes control of the pump and the operating panel of the pump is now 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
Keep MIXIT running to avoid condensation and the risk of ice building up. 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
8.3 Indication of pump connection To know which pump MIXIT is connected to, do as follows: 1. Push the connect button on the MIXIT operating panel. 2. Watch the connected pumps. Grundfos Eye starts to flash on the operating panel of the corresponding pump.
Page 27: Setting The Product
9.2 Connecting to Grundfos GO Remote Before connecting the product to Grundfos GO Remote, the Grundfos GO Remote app must be downloaded to your smartphone or tablet. The app is free of charge and available for iOS and Android devices.
Page 28: Initial Setup Wizard
9.4 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
You can change your setpoint settings with Grundfos GO Remote and via fieldbus. If you attempt to change the setpoint from the MIXIT operating panel, the SET setpoint indicator will start to flash as the setpoint is now controlled from an external source.
Page 30 Main menu > Settings > Other settings In Other settings you can do the following: • Lock the MIXIT operating panel and Grundfos GO Remote. When Grundfos GO Remote is locked, you will still be able to connect to and monitor MIXIT. •...
Page 31: Functions Overview
• CONNECT is suitable when MIXIT operates as a subsystem in large installations, where a BMS system is already in place. The upgrade enables you to connect MIXIT to a building management system via fieldbus (BACnet or Modbus) and gives access to Grundfos...
Page 32: Temperature Controller
9.7 Temperature controller From factory MIXIT is configured so that the temperature response of the system in most cases corresponds to the centre graph in the below figure. This is the ideal response. However, in some cases it may be necessary to make adjustments.
Page 33: Underfloor Overheat Protection
MIXIT will react by fully opening the valve in order to circulate hot water in the system. The return flow temperature is measured by the sensor in port B of MIXIT. To measure the air temperature, you need to either install a temperature sensor in the coil or have the temperature data sent via fieldbus.
Page 34: 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 done via MIXIT.
Page 35 9.12.4 Constant flow In this control mode, the pump maintains a constant flow in the system independently of the head. Constant-flow curve We recommend that you select this control mode in air handling unit systems. 9.12.5 Constant curve/constant speed At constant-curve/constant-speed operation, the pump runs at a constant speed, independently of the actual flow rate demand in the system.
Page 36: Position Control
9.13 Position control The Position control function allows you to use an external electrical input signal to control the opening degree of the MIXIT valve between 0-100%. The valve position resolution is 150 steps to avoid unnecessary movement and wear of the valve.
Page 37: Weather Curve
You can change your setpoint settings with Grundfos GO Remote and via fieldbus. If you attempt to change the setpoint from the MIXIT operating panel, the SET setpoint indicator will start to flash as the setpoint is now controlled from an external source.
Page 38: Eco Schedule
Main menu > Settings > Eco functions > Eco schedule A temperature setback can be defined for the period in which MIXIT runs according to Eco schedule. In this period, MIXIT sets the normal operating temperature back with the number of degrees set in Grundfos GO Remote. Temperature setback is only available for heating applications.
Page 39: Warm Weather Shutdown
9.16 Warm weather shutdown When a defined average outdoor temperature has been surpassed one to three days in a row, MIXIT automatically closes the valve and the pump stops. MIXIT and the pump start again, when the average outdoor temperature drops below the defined limit.
Page 40: Supply Flow Limit
This function is available with MIXIT DYNAMIC and is automatically activated. You can upgrade to DYNAMIC at any time. To ensure sufficient primary flow to all installed MIXIT systems, you can balance each system according to its heat demand. This is done by limiting the primary flow through the valve.
Page 41: Thermal Power Limit
This function is available with MIXIT DYNAMIC and is automatically activated. You can upgrade to DYNAMIC at any time. 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 42: Supply Source Setpoint
Supply source setpoint = MIXIT setpoint minus 2 °C as default for cooling. Daisy chain When multiple MIXIT units are connected in series, you can connect the analog output of one MIXIT unit to the analog input of another MIXIT unit and then enable the Daisy chain functionality.
Page 43 9.22.1 Setting a supply source setpoint Main menu > Settings > Supply source setpoint The Supply source setpoint function includes configuration of either one MIXIT unit or a daisy chain of multiple MIXIT units connected in series. CIO2 is not available for air temperature feed back, when using Daisy chain for supply source setpoint.
Page 44: Energy Monitoring
The values in the energy monitoring display reflect the actual status of the system in use, that is, either heating or cooling. In the combined heating and cooling application, you can switch between the heating and cooling display. If currently heating, Grundfos GO Remote shows the heating parameters and vice versa.
Page 45: Grundfos Buildingconnect
With Grundfos BuildingConnect you can monitor your MIXIT system from the office or on the go. Grundfos BuildingConnect offers realtime monitoring, including alarm and warning notifications. With Grundfos BuildingConnect Professional you get access to even more monitoring points and trend curves as well as the ability to control the system.
Page 46: 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 will indicating an alarm or warning on the top of the screen. stop, because MIXIT closes the valve and the pump stops. The display changes between Err and the fault code, while the LEDs 2.
Page 47: Alarm And Warning Codes
2. Change if needed. 10.3.7 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 cannot rotate.
Page 48 If available, MIXIT uses the flow temperature sensor in the pump and operates according to the local setpoint. • If the pump flow temperature sensor is faulty, MIXIT operates according to the default temperature of the return temperature sensor. The default temperature depends on the application.
Page 49 10.3.18 Code 169 (Signal fault, flow sensor) Product behaviour MIXIT continues to operate. Performance at higher differential pressures might be reduced. Flow measurements, the supply flow limit and the thermal power limit are not available in Grundfos GO Remote. Cause Remedy The A-port sensor is faulty.
Page 50: Setpoint Limit
• Check the fault code on the operating panel of the pump and if possible remove the fault causing the alarm. The MIXIT unit will automatically reset itself after the pump alarm has been solved. 10.3.23 Code 236 (Multi-pump alarm for pump 1) Product behaviour The MIXIT unit continues its operation with a single pump.
Page 51: Service
All electrical connections must be carried out by a 1. Press and hold the OK and connect buttons for 10 seconds. qualified electrician in accordance with local 2. All LEDs light up. MIXIT is now reset and ready for a new regulations. commissioning.
Page 52: Technical Data
Related information 4.1 Location 12.2 Sound pressure level The sound pressure level for MIXIT without cavitation is below 40 dB(A) (pressure differential across the valve A - AB < 100 kPa). 12.3 Cable requirements Cable type: H05RN-F / H07RN-F All control terminals are supplied by safety extra-low voltage (SELV) and separated.
Page 53: Classes
Digital input (DI) Internal pull-up current > 10 mA at Vi = 0 V, Ri = 100 kΩ at Vi > 5 V Certain low logic level Vi < 1.8 V Certain high logic level Vi > 2.7 V or floating Hysteresis The I/Os, CIO and DI, are 24 V tolerant.
Page 54: Sensor Data
µ shows the average value of all measured MIXIT units in the K range (blue curves) • 3σ and -3σ show that 99.7 % of all MIXIT units in the range will be within these accuracies (green and orange curves) Kvs 6.3 Error μ...
Page 55: Actuator
Kvs 16 Error μ 3σ -3σ -10% -15% -20% m3/h Kvs 25 Error μ 3σ -3σ -10% -15% -20% m3/h Kvs 40 Error μ 3σ -3σ -10% -15% -20% m3/h Related information 9.23 Energy monitoring 12.8 Actuator Angular rotation, 360° both ways Ball valve, movement and type of action Multi-position Temperature for ball pressure test...
Page 56: Valve
12.9 Valve Valve details Type of valve Mixing valve Three-way inverting valve or two-way modulating valve with Function integrated shunt Type of closure member Ball Type of operation Directly controlled and operated, no minimum differential pressure Type of movement Rotational, no mechanical stops Positioning Modulating Valve stroke (rated travel)
Page 57 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 Cavitation risk ∆p valve [bar] 10.0 system [bar] Cavitation risk in a system with a liquid temperature of 20 °C. Y axis: Differential pressure [bar]. X axis: Static pressure, relative [bar]. Colored area Description Green...
Page 58: Disposing Of The Product
QR code app. 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. 3. Dispose of the waste battery through the national collective schemes.
Page 59 Unit 1, Ground floor, Siu Wai industrial Turkey www.ba.grundfos.com Centre GRUNDFOS Pumps NZ Ltd. GRUNDFOS POMPA San. ve Tic. Ltd. Sti. E-mail: grundfos@bih.net.ba 29-33 Wing Hong Street & 68 King Lam 17 Beatrice Tinsley Crescent Gebze Organize Sanayi Bölgesi Street, Cheung Sha Wan...
Page 60 99513532 12.2024 ECM: 1408342 www.grundfos.com...

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