Summary of Contents for Cetetherm Midi Wall IQHeat
- Page 1 Installation, service and operating instruction Cetetherm Midi Wall IQHeat Heating and domestic hot water substation for apartment houses (10-30 apts.) DOC-1560 Rev 2019-10-17...
- Page 2 QR-code: This manual is published by Cetetherm. Cetetherm can without further notice make changes and improvements to the content in this manual if it is necessary due to printing mistakes, wrong information or changes in the hardware or software. All these types of changes will be included in future release of the manual.
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Page 3: Table Of Contents
Mounting the options ..........................8 Adjustments and settings for start up ......................8 Dismantlement............................8 Commissioning advice ..........................8 Connection overview ..........................9 Measure sketch Midi Wall IQHeat ......................10 Control center IQHeat ......................11 Password and login ..........................12 4.1.1 Log in ..............................13 Time functions setting of time and date .................... - Page 4 Cetetherm Midi Wall IQHeat Installation, service and operating instruction Service actions for the installer ..................25 10.1 Check if the district heating strainer is blocked ..................25 10.2 Check the function of the heating and hot water valve and actuator ............. 26 10.3...
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Page 5: General
Installation, service and operating instruction 1 General Cetetherm Midi Wall is a complete, ready-to-install heating network substation for heating and hot water. It is designed for buildings with a primary connection to a heating network. Cetetherm has years of experience in heating network technology and has developed Midi Wall with well-planned pipe work and with all components easily accessible for inspection and possible future servicing. -
Page 6: General Warnings
Cetetherm Midi Wall IQHeat Installation, service and operating instruction General warnings The installation work must be carried out by an authorized installation contractor. Before the system is taken into operation, it must be pressure tested in accordance with relevant regulations. -
Page 7: Product Overview Midi Wall
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Product overview Midi Wall Picture 1 Heat exchanger, heating 21. Control centre Heat exchanger, DHW 22. Actuator, DHW Control valve, heating 23. Actuator, heating Control valve, DHW 24. Temperature sensor, DHW Shutoff valve, cold water 25. -
Page 8: Operating Instructions
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 2 Operating instructions Operation The temperature and pressure of the incoming heating network water from the culvert network are very high. For this reason, only the heat from this water is used. The heating network water does not enter the heating and hot water systems of the building. -
Page 9: Installation
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 3 Installation Unpacking • Remove the transport packaging and check that the product has not been damaged in transit and that the consignment agrees with the specifications. • When lifting the unit, take care not to apply stress to pipes and heat exchangers as this may weaken them Lift the unit in the frame;... -
Page 10: Mounting The Options
Cetetherm Midi Wall IQHeat Installation, service and operating instruction • Mount the outdoor temperature sensor on the north side of the building, 2 metres above the ground, or higher. For installation of the outdoor temperature sensor, see 6.3 Installation of outdoor temperature sensor. -
Page 11: Connection Overview
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Connection overview Picture 3 DHW G1” Heat Supply G1 1/4" Heat Return G1 1/4” DH Supply DN25, weld CW G1” DH Return DN255, weld VVC G1”... -
Page 12: Measure Sketch Midi Wall Iqheat
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Measure sketch Midi Wall IQHeat Picture 4... -
Page 13: Control Center Iqheat
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 4 Control center IQHeat IQHeat is an intelligent controller for district heating and cooling substations. Whether it is energy saving, energy cost reduction or comfort monitoring that is the goal, IQHeat from Cetetherm is an excellent choice. -
Page 14: Password And Login
• all rights as for System Administrator • access to all menus and system settings. Contact Cetetherm if there is a need to change anything at this level. -
Page 15: Log In
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 4.1.1 Log in 1. Keep the OK button pressed to access the Password menu. 2. The first digit of four is marked with 0. 3. Turn the navigation dial until the desired number appears. -
Page 16: Troubleshooting
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 5 Troubleshooting Fault indication for IQHeat The processing unit alerts for different situations. Alarms are indicated on the control display with the alarm symbol Alarms are divided into three classes: •... -
Page 17: Electrical Installation
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 6 Electrical installation General The wiring in Midi Wall conforms to the applicable rules for CE marking and has undergone electrical safety testing and function testing. For permanent installation must the substation be connected to an all-pole isolator switch. -
Page 18: Electrical Circuit Diagram
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Electrical circuit diagram Picture 6... -
Page 19: Schematic Diagram, Main Components
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 7 Schematic diagram, main components Picture 7 Option 3-point HB metering Picture 8 Welded filter Shut off valves Manometer clock Sensor pocket energy meter primary in Sensor pocket energy meter primary out... -
Page 20: Pump Settings And Capacity
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 8 Pump settings and capacity General Mini Wall is equipped with two circulation pumps, one for the hot water circulation, DHWC-pump, and one for the heating circuit. The DHWC pump is a traditional three speed circulation pump. The DHWC pump has a switch where the speed/capacity can be set. -
Page 21: Heating Circuit Pump Grundfos Upmxl 25-125 180 Auto (Gfjoc), Settings And Capacity
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Heating circuit pump Grundfos UPMXL 25-125 180 Auto (GFJOC), settings and capacity Picture 11 Settings MAX.H 7,5 m 10 m 12,5 m 9,5 m 11 m... -
Page 22: Changing Pump Curve Setting
Cetetherm Midi Wall IQHeat Installation, service and operating instruction The heating pump is internally controlled via digital pulse-width modulation. The user interface allows to select between six control curves in two control modes: • three proportional pressure curves (PP) •... -
Page 23: Heating Circuit Pump Grundfos Magna3 25-100, Capacity
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Heating circuit pump Grundfos Magna3 25-100, capacity Picture 14... -
Page 24: Service Instructions
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 9 Service instructions To avoid the risk of scalding, make sure that no-one draws any water while servicing the substation. Grey marked service actions must be carried out by an authorized service technician. -
Page 25: Nosie In The Dhwc System
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 9.1.4 Nosie in the DHWC system Reason Action The DHWC pump capacity set too Reduce the pump capacity high Reduce the pump capacity by selecting a lower setting on the pump when needed. -
Page 26: Noise In The Radiator System
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Vent the pump The pump is self-venting. Possible remaining air in the pump may cause noise. This noise ceases after a few minutes run time. Heating supply temperature sensor Check the heating supply temperature sensor and outdoor and outdoor temperature sensor does temperature sensor for correct placement and function. -
Page 27: Service Actions For The Installer
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 10 Service actions for the installer 10.1 Check if the district heating strainer is blocked Service actions must be carried out by an authorized service technician. Before starting out repairs always close the primary supply and return shutoff valves and drain the system. -
Page 28: Check The Function Of The Heating And Hot Water Valve And Actuator
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 10.2 Check the function of the heating and hot water valve and actuator User instruction IQHeat Doc-1552 chapter Tests section Testing the valves. Service actions must be carried out by an authorized service technician. -
Page 29: Check Heating Circuit Strainer
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 10.3 Check heating circuit strainer Service actions must be carried out by an authorized service technician. Before starting out repairs always close the primary supply and return shutoff valves and drain the system. -
Page 30: Run The Pump Manually
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 10.5 Run the pump manually If it becomes necessary to run the pump and actuator manually, this can be done by disconnecting the power to the operator control panel. Disconnect the electrical plug for the pump and connect the replacement cable to the power supply and to the circulation pump. -
Page 31: Maintenance And Repairs
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 11 Maintenance and repairs Maintenance work must be carried out by an authorized service technician. 11.1 Change the pumps Either change the complete pump or just the pump motor. Maintenance work must be carried out by an authorized service technician. -
Page 32: Change The Heating And Hot Water Actuator
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 11.2 Change the heating and hot water actuator Maintenance work must be carried out by an authorized service technician. Disconnecting the power feed to the pump and the substation. 1. Open actuator lid and unscrew connecting wires attached to the wire terminal (Picture 38). -
Page 33: Change The Temperature Sensor Heating Supply/Return
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 11.4 Change the temperature sensor heating supply/return 1. Carefully lift the sensor cover with a screwdriver and unscrew the connecting wires in attached to the wire terminal. Picture 24 2. Loose the band the holds the sensor to the pipe. -
Page 34: Options
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 12 Options The mounting instructions are described for a new installation. If the kits are supposed to be installed on an already installed subsystem, you will have to release the water pressure and disconnect the electrical power supply before starting. -
Page 35: Balancing Valve Dhwc
Cetetherm Midi Wall IQHeat Installation, service and operating instruction Picture 29 Picture 30 12.3 Balancing valve DHWC Set the valve to a specific pressure drop according to: 1. Close the valve fully. 2. Open the valve the correct numbers of turns. - Page 36 Cetetherm Midi Wall IQHeat Installation, service and operating instruction Picture 34 *) recommended area **) 25 dB (A) ***) 35 dB (A)
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Page 37: Technical Data And Performance
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 13 Technical data and performance 13.1 Operation data Midi Wall 70... -
Page 38: Operation Data Midi Wall 100
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 13.2 Operation data Midi Wall 100... -
Page 39: Operation Data Midi Wall 130
Cetetherm Midi Wall IQHeat Installation, service and operating instruction 13.3 Operation data Midi Wall 130 13.4 Technical data Electrical data: 230V 50Hz 1-phase 290-315W Noise level: <70dB(A), 1,6 m above floor level, 1 m from source Main measurements: 730x510x1115 mm (WxDxH)