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Related Manuals for Cetetherm Mini Plus CM737
Summary of Contents for Cetetherm Mini Plus CM737
- Page 1 Installation, service and operating instruction Cetetherm Mini Plus CM737 DHWC District heating substation for single-family houses and multi-family buildings (1 to 12 apartments) och serviceinstruktion Mini/Mini XL RVS46 DOC-1272 Rev: 2018-06-01...
- 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
Cetetherm Mini Plus CM737 Installation, service and operating instruction Contents General information ......................3 Comfort ..............................3 Installation ..............................3 Long-term security .............................3 CE-marking ..............................3 Information about the document ........................3 General warnings ............................4 Operating instructions ......................5 Operation ..............................5 Safety equipment/inspection ........................5 Product overview ........................ - Page 4 Cetetherm Mini Plus CM737 Installation, service and operating instruction 13.2 DHWC-pump Grundfos UPSO 15-55 ..................... 26 13.3 Heating circuit pump Grundfos UPM3 Auto L 50-70 130 ............... 27 13.3.1 Pump curve proportional pressure mode 2, PP2 ................28 13.3.2 Change pump operating mode ......................28 13.3.3...
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Page 5: General Information
Installation, service and operating instruction 1 General information Cetetherm Mini Plus 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 Mini Plus with well-planned pipe work and with all components easily accessible for inspection and possible future servicing. -
Page 6: General Warnings
Cetetherm Mini Plus CM737 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: Operating Instructions
Cetetherm Mini Plus CM737 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 8: Product Overview
Cetetherm Mini Plus CM737 Installation, service and operating instruction 3 Product overview Picture 1 Heat exchanger for heating Balancing valve DHWC Heat exchanger for domestic hot water Circulation pump DHWC Connection box for electric power and Check valve for DHWC... -
Page 9: Installation
Cetetherm Mini Plus CM737 Installation, service and operating instruction 4 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. -
Page 10: Mounting Options
Cetetherm Mini Plus CM737 Installation, service and operating instruction Mounting options • If the substation is connected to a system sensitive to high temperature or to a low temperature system, for example floor heating, a safety thermostat must be mounted and activated before start up. -
Page 11: Measure Sketch Mini Plus
Cetetherm Mini Plus CM737 Installation, service and operating instruction 5 Measure sketch Mini Plus Picture 3... -
Page 12: Control Panel With Room Thermostat Cm737
Cetetherm Mini Plus CM737 Installation, service and operating instruction 6 Control panel with room thermostat CM737 General The rom thermostat CM737 controls the supply temperature to the heating system. When connecting unit to the power supply, the room thermostat verifies the connected sensors and then automatically chooses to control by room or outdoor temperature sensor or both. -
Page 13: Installing And Start Up The Control Panel
Cetetherm Mini Plus CM737 Installation, service and operating instruction 7 Installing and start up the control panel Using the control panel as a room thermostat The control panel can be used as a room thermostat. Before installation make sure that the electrical power supply is disconnected. - Page 14 Cetetherm Mini Plus CM737 Installation, service and operating instruction Picture 6...
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Page 15: Installing The Outdoor Temperature Sensor
Cetetherm Mini Plus CM737 Installation, service and operating instruction Installing the outdoor temperature sensor Connect the outdoor temperature sensor to the terminal strip in accordance with the electrical diagram, remove any resistor. the maximum cable length is 50 metres and maximum 5Ω/conductor. When With a conductor area of 0.6 mm... -
Page 16: Setting The Day
Cetetherm Mini Plus CM737 Installation, service and operating instruction Setting the day 1. Press the DAY button to begin setting the day, (1-7=mon-sun). Each press will move the day indicator one step forward. After 7 it will start over again at 1. -
Page 17: Operating The Room Thermostat Cm737
To set the operating mode press either of the AUTO, MAN or OFF buttons. The screen indicates which mode is currently active. NOTE: Cetetherm recommends the mode MAN. • MAN (manual) the room thermostat acts with a fixed set point throughout the day. -
Page 18: Holiday Function
Cetetherm Mini Plus CM737 Installation, service and operating instruction Holiday function The holiday function allows you to set a constant temperature (default = 10°C) for a specified number of days (from 1 - 99 days). This saves energy and related costs when the house is empty, but resumes normal operation on the day of return. -
Page 19: Operating Mode Auto
Cetetherm Mini Plus CM737 Installation, service and operating instruction Operating mode Auto 8.6.1 The Built-in Heating Program The built-in heating program has four temperature level changes per day that can be set between 3.00am and 2.50am the following day - allowing the evening temperature to maintain after midnight. Each temperature level can be set between 5°C and 35°C, and adjusted in 0.5°C increments. -
Page 20: Modifying The Heating Program
Cetetherm Mini Plus CM737 Installation, service and operating instruction 8.6.5 Modifying the heating program To change the heating program: a) Press either of the PROGRAM buttons to enter the programming mode. The time /temperature settings for period on Monday day 1 will be flashing. -
Page 21: Activation Of Installer Parameters
Cetetherm Mini Plus CM737 Installation, service and operating instruction 9 Activation of installer parameters Installer Mode is used to alter the system settings for specific applications, to use the special features of the room thermostat in a different way or to alter the factory present parameters. Parameters are divided into groups: •... -
Page 22: Category 1 Parameters: Control Panel Settings
Cetetherm Mini Plus CM737 Installation, service and operating instruction Category 1 parameters: Control panel settings Parameter Para Factory Default Setting Optional Setting meter Display Description Display Description 12 hr. – AM/PM clock display AM-PM / 24hr 1:CL 24 hr. clock display... -
Page 23: Category 3 Parameters: Setting And Displaying Sensor Values
Cetetherm Mini Plus CM737 Installation, service and operating instruction Category 3 parameters: Setting and displaying sensor values Parameter Para Factory Default Setting Optional Setting meter Display Description Display Description Maximum central 1:CH 90°C or obtained from 40 to 90 40°C to 90°C adjustment in... -
Page 24: Troubleshooting The Control Panel
Cetetherm Mini Plus CM737 Installation, service and operating instruction 10 Troubleshooting the control panel Symptom Possible Cause Remedy The control panel receives The control panel is not power supply from the connected to the correct A flashing symbol connection box, but no terminals of the connection box. -
Page 25: Fault Codes On The Control Panel
Cetetherm Mini Plus CM737 Installation, service and operating instruction 10.1 Fault codes on the control panel If a spanner is visible on the display, there is an on ongoing alarm. Press the Info-button to view the fault code. Error source... -
Page 26: Electrical Circuit Diagram
Cetetherm Mini Plus CM737 Installation, service and operating instruction 11 Electrical circuit diagram Picture 11... -
Page 27: Schematic Diagram, Main Components
Cetetherm Mini Plus CM737 Installation, service and operating instruction 12 Schematic diagram, main components Picture 12... -
Page 28: Pump Settings And Pump Performance
Cetetherm Mini Plus CM737 Installation, service and operating instruction 13 Pump settings and pump performance 13.1 General Mini Plus 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 29: Heating Circuit Pump Grundfos Upm3 Auto L 50-70 130
Cetetherm Mini Plus CM737 Installation, service and operating instruction 13.3 Heating circuit pump Grundfos UPM3 Auto L 50-70 130 When the pump is switched on it runs with the factory pre-setting or the last setting. The pump is pre-set to run with operation mode, proportional pressure mode 2, PP2. -
Page 30: Pump Curve Proportional Pressure Mode 2, Pp2
Cetetherm Mini Plus CM737 Installation, service and operating instruction 13.3.1 Pump curve proportional pressure mode 2, PP2 Line type Description Constant Curve Proportional Pressure Constant Pressure 13.3.2 Change pump operating mode The display shows the current operation status. • Press the button for more than 2 seconds and the circulator switches to "setting selection". -
Page 31: Heating Circuit Pump Grundfos Upml 25-95 180, Settings And Capacity
Cetetherm Mini Plus CM737 Installation, service and operating instruction 13.4 Heating circuit pump Grundfos UPML 25-95 180, settings and capacity 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: •... -
Page 32: Changing Pump Curve Setting
Cetetherm Mini Plus CM737 Installation, service and operating instruction 13.4.1 Changing pump curve setting Picture 16, Serial curve setting 1. Push the button for two seconds Pump goes to setting mode - LED starts flashing. 2. With each push, the setting changes: LED 1-2-3 are permanently on, and then the control curve and mode is changed. -
Page 33: Fault Finding Pump
Cetetherm Mini Plus CM737 Installation, service and operating instruction 14 Fault finding pump Before starting any work at the pump, switch off the power supply. Make sure that the power supply cannot be switched on accidentally. Be aware that capacitors will be live up to 30 seconds after the power supply has been switched off. -
Page 34: Service Instructions
Cetetherm Mini Plus CM737 Installation, service and operating instruction 15 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 35: Noise In The Dhwc System
Cetetherm Mini Plus CM737 Installation, service and operating instruction 15.1.4 Noise in the DHWC system Reason Action The pump capacity is set too high Reduce the pump capacity The pump has been set at a too high capacity level. Reduce the level by choosing a lower output setting on the pump. -
Page 36: No Heating
Cetetherm Mini Plus CM737 Installation, service and operating instruction Reason Action The heating control equipment may Check and adjust the heating curve need to be adjusted 9.2 Category 1 parameters: Control panel settings and change the selected heating curve with parameter 15 category 1. -
Page 37: Heating System Often Needs Topping Up
Cetetherm Mini Plus CM737 Installation, service and operating instruction Reason Action Air pockets in the substation or in the Bleed the heating system heating circuit Bleed the heating system at highest point in the heating system. The pump is self-venting. Air in the pump may cause noise. This noise ceases after a few minutes run time. -
Page 38: Noise In The Radiator System
Cetetherm Mini Plus CM737 Installation, service and operating instruction 15.2.5 Noise in the radiator system Reason Action The pump capacity is set too high Reduce the pump capacity Reduce the level by choosing a lower output setting on the pump. -
Page 39: Service Actions For The Installer
Cetetherm Mini Plus CM737 Installation, service and operating instruction 16 Service actions for the installer 16.1 Check the function of the valve for hot water Service actions must be carried out by an authorized service technician. Close the shutoff valves for the DH supply and DH return together with the cold and hot water. -
Page 40: Check The Heating Actuator And Valve Function
Cetetherm Mini Plus CM737 Installation, service and operating instruction 16.2 Check the heating actuator and valve function Service actions must be carried out by an authorized service technician. The control panel must be without current when maneuvering the actuator by hand. -
Page 41: Run The Pump Manually
Cetetherm Mini Plus CM737 Installation, service and operating instruction 16.4 Run the pump manually Service actions must be carried out by an authorized service technician. Hand maneuver of the heating actuator The room thermostat must be without current when maneuvering the actuator by hand. -
Page 42: Maintenance And Repairs
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17 Maintenance and repairs When carrying out repairs, please contact your local service partner. Before starting out repairs always close the correct shutoff valves. When dismounting a component there will be water coming out, hot and under pressure. -
Page 43: Change The Complete Dhwc Pump Or Pump Components
Cetetherm Mini Plus CM737 Installation, service and operating instruction 1. Disconnect the power feed to the substation. 2. Close the shut-off valves. 3. Use a wrench and release the filter cover and remove the cartridge. 4. Clean the filter with water and refit the cartridge. Screw the filter cover with a momentum of 10-20 Nm. -
Page 44: Change The Complete Heating Pump Or Pump Components
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17.4 Change the complete heating pump or pump components Maintenance and repairs must be carried out by an authorized service technician. Before starting out repairs, close the shutoff valves DH supply, DH return, heating supply and heating return. -
Page 45: Change The Outdoor Temperature Sensor
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17.6 Change the outdoor temperature sensor 1. Disconnect the power feed to the substation. 2. Close the heating actuator by turning the knob clockwise to its closing position. 3. Unscrew the lid by turning it anti-clockwise. -
Page 46: Change The Heating Valve
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17.8 Change the heating valve The temperature and the pressure of the district heating water are very high. Only qualified technicians can work with the district heating substation. Incorrect operation may cause serious personal injury and result in damage to the building. -
Page 47: Change The Hotwater Actuator And Sensor
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17.10 Change the hotwater actuator and sensor Maintenance and repairs must be carried out by an authorized service technician. Before starting out repairs, close the shutoff valves DH supply, DH return, cold-water and hot water. -
Page 48: Change The Dhwc Check Valve
Cetetherm Mini Plus CM737 Installation, service and operating instruction 17.11 Change the DHWC check valve Maintenance and repairs must be carried out by an authorized service technician. Before starting out repairs, close the shutoff valves DH supply, DH return, cold-water and hot water. -
Page 49: Options
Cetetherm Mini Plus CM737 Installation, service and operating instruction 18 Options The mounting instructions are described for a new installation. If the kits are supposed to be installed on an already installed subsystem, you must release the water pressure and disconnect the electrical power supply before starting. -
Page 50: Operating Data And Performance
Cetetherm Mini Plus CM737 Installation, service and operating instruction 19 Operating data and performance 19.1 Operating data Mini Plus CB30-60H 19.2 Operating data Mini Plus CB18-54H... - Page 52 Cetetherm AB Fridhemsvägen 15 372 38 Ronneby – Sweden www.cetetherm.com...