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Summary of Contents for Alfa Laval Micro
- Page 1 Installation and service instruction Alfa Laval Micro Heating & domestic hot water substation for apartments and single family houses DOC-1355, 3rd June 2014...
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Page 3: Table Of Contents
Mounting options Micro RTC ......................13 2.4.2 Mounting options Micro STC ......................14 Adjustments and setting general ......................15 Commissioning advice Micro RTC and Micro STC ................15 Dismantlement............................15 User instruction HTC hot water actuator ....................15 Measure sketch ............................16 Installing the room thermostat CM737 ................ - Page 4 Flow rate graph of the DPC ........................43 Electrical circuit diagram ....................44 Schematic diagram, main components ................46 13.1 AquaMicro .............................. 46 13.2 Micro DPC .............................. 46 13.3 Micro RTC .............................. 47 13.4 Micro STC ............................... 47 13.5 Micro STC2 ............................. 48 13.6...
- Page 5 Open up the valves slowly to avoid pressure surges. Micro STC and Micro STC2 warnings Before the substation is connected to the electrical supply, make sure that the heating system is topped up with water.
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Page 6: General
Alfa Laval Micro Installation and service instruction 1 General Product overview AquaMicro Picture 1 Heat exchanger and temperature Adapter for Hot water flow meter controller for hot water Control valve for hot water Heating network media, supply Temperature sensor connection,... -
Page 7: Product Overview Micro Dpc
Alfa Laval Micro Installation and service instruction Product overview Micro DPC Picture 2 Heat exchanger and temperature Heating network media, supply controller for hot water Control valve for hot water Heating network media, return Temperature sensor connection, Cold water (cw) -
Page 8: Product Overview Micro Rtc
Alfa Laval Micro Installation and service instruction Product overview Micro RTC Picture 3 Heat exchanger and temperature Cold water outlet (cw) controller for hot water Control valve for hot water Hot water (hw) Temperature sensor connection, Differential pressure controller heating media supply... -
Page 9: Product Overview Micro Stc
Alfa Laval Micro Installation and service instruction Product overview Micro STC Picture 4 Heat exchanger and temperature Differential pressure controller controller for hot water Control valve for hot water Heating circuit, return Temperature sensor connection, Heating circuit, supply heating media supply... -
Page 10: Product Overview Micro Stc2
Alfa Laval Micro Installation and service instruction Product overview Micro STC2 Picture 5 Heat exchanger and temperature Heating circuit, return controller for hot water Control valve for hot water Heating circuit, supply Temperature sensor connection, Control valve, heating circuit heating media supply... -
Page 11: Product Overview Micro Htc
Alfa Laval Micro Installation and service instruction Product overview Micro HTC Picture 6 Heat exchanger and temperature Heating network media, return controller for hot water Control valve for hot water Cold water (cw) Temperature sensor connection, Cold water outlet (cw) -
Page 12: Installation
AquaMicro: at least 50kPa and at most 600 kPa Micro DPC, RTC STC, STC2 and HTC at least 50 kPa and at most 400 kPa Where the differential pressure is higher, a differential pressure controller should be added to the installation. -
Page 13: Mounting Options General
Set the pump capacity of the heating circulation pump according to the pressure head diagram see the manual Operating Instruction Alfa Laval Micro. Use the lowest setting that manages the heating demand for best electrical efficiency. Mounting options general ... -
Page 14: Mounting Options Micro Stc
Installation and service instruction Installing the CM721 wireless system. 2.4.2 Mounting options Micro STC 3 Installing the room thermostat CM737. Mount the outdoor temperature sensor (option) on the north side of the building, 2 metres above the ground, or higher. -
Page 15: Adjustments And Setting General
Set point °C (approx.) Alfa Laval recommends that the tap water temperature is set to 10º less than the primary inlet temperature. If a HTC the temperature must be 15º less than the primary inlet temperature. NOTE: Make sure that no cold water is mixed with the hot water while making this adjustment. -
Page 16: Measure Sketch
Alfa Laval Micro Installation and service instruction Measure sketch... -
Page 17: Installing The Room Thermostat Cm737
Time change buttons 5 Temperature display Holiday function button Micro STC and Micro STC2 with CM737 are supplied fully wired. The wiring conforms to the applicable rules for CE marking and has undergone electrical safety tests testing and function tests. OK-button (9) When changing settings/values in CM737 the numbers in the display is flashing. -
Page 18: Installing The Room Thermostat
Alfa Laval Micro Installation and service instruction Installing the room thermostat Before installation make sure that the electrical power supply is disconnected. Install the room thermostat in the living space according to following: A suitable installation is about 1.5 meters above floor and on an inner wall. - Page 19 Alfa Laval Micro Installation and service instruction Picture 12...
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Page 20: Installing The Outdoor Temperature Sensor (Option)
By outdoor temperature compensation this change represents a standard parallel shift of the heat curve, recalculated for room temperature. For more details see chapter Pump settings and pump performance in the manual Operating Instruction Alfa Laval Micro. Configure the room thermostat after installation CM737 can be configured in three different ways. -
Page 21: Setting The Time
Alfa Laval Micro Installation and service instruction b) Press the buttons to set the current month of the year (e.g. m 01 = January) then press the green button to confirm. c) Press the buttons to set the current year (e.g. yr. -
Page 22: Installing The Cm721 Wireless System
Alfa Laval Micro Installation and service instruction 4 Installing the CM721 wireless system General Note: The individual room thermostat (CM721) and relay box (BDR91) in system packs is pre-configured at the factory and therefore SHOULD be installed at the same site. -
Page 23: Relay Box Bdr91
Alfa Laval Micro Installation and service instruction Relay box BDR91 1. Relay status indicator, green LED 2. Manually override button 3. Fault indicator, red LED Picture 15 Installation information Special care must be taken during installation with product that communicates using RF technology. -
Page 24: Installing The Relay Box
Alfa Laval Micro Installation and service instruction Installing the relay box Please follow the illustrations and information in Picture 17 in sequence to install the relay box and room thermostat correctly. For applications other than gas boilers, enabling special features and to see what other system options are available refer to section 8.3.3 Using the room thermostat for specific... -
Page 25: Preparing The Room Thermostat
Alfa Laval Micro Installation and service instruction Preparing the room thermostat 4.6.1 Installing the batteries The thermostat constantly monitors the battery power level, which typically lasts for about 2 years before needing replaced. When the power is running low a flashing symbol will be displayed on the screen. -
Page 26: Rf Communication Check (Test Mode)
Alfa Laval Micro Installation and service instruction RF Communication check (test mode) To check the RF communication: 1. Hold the room thermostat about 2-3 meters from the installed relay box. Picture 18 2. Press the OFF button, then press the buttons together with the button for 3 seconds. -
Page 27: Signal Strength Test
Alfa Laval Micro Installation and service instruction 4.7.1 Signal strength test Poor signal, reposition the room thermostat. Strong Signal Picture 20 Continue to 4.7.2 Locating and mounting the room thermostat. 4.7.2 Locating and mounting the room thermostat While still in the Test Mode, as described in section 4.7,... -
Page 28: System Check
Alfa Laval Micro Installation and service instruction System check Check that the full system has been installed correctly: 1. Press the OFF button. 2. Check the boiler supply is on and check that the green LED on the relay box is off. -
Page 29: Binding/Rebinding The Cm721
Alfa Laval Micro Installation and service instruction 5 Binding/rebinding the CM721 The binding operation is required if: Any of the system components (room thermostat or relay box) are replaced. The relay box has incorrect or no binding data stored e.g. when pre-bound system pack components have been mismatched. - Page 30 Alfa Laval Micro Installation and service instruction relay box. Picture 25 Set Room Unit into binding mode Picture 26 Send the binding signal 7. Press the green button to send the binding signal out to the relay box. The red LED is switched off to confirm successful binding operation.
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Page 31: Basic Operation Of The System Cm721
Alfa Laval Micro Installation and service instruction 6 Basic operation of the system CM721 Setting one temperature for the whole day To operate as a simple thermostat with one temperature throughout the day, select the manual operating mode by pressing the MAN button. Adjust the temperature by pressing the buttons - this can be set anywhere from 5°C to 35°C in 0.5°C steps. -
Page 32: Special Functions For Cm721
Alfa Laval Micro Installation and service instruction 7 Special functions for CM721 Service indicator NOTE: This option only works if activated by the installer. The 'SERVICE' indicator is displayed at set intervals as a reminder to make a routine check of the heating system. -
Page 33: Activation Of Installer Parameters
Alfa Laval Micro Installation and service instruction 8 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 34: Cm737-Installer Parameters Table
Alfa Laval Micro Installation and service instruction CM737-Installer parameters table 8.2.1 CM737-Category 1: Room Thermostat Settings Parameter Parame Factory Default Setting Optional Setting ter N:o Disp Description Display Description Category 1 Parameters - Programmable Thermostat Settings 12 hr. – AM/PM clock display... -
Page 35: Installation And Service Instruction
Alfa Laval Micro Installation and service instruction 8.2.2 CM737-Category 2: System Settings Parameter Para Factory Default Setting Optional Setting meter Display Description Display Description Category 2 Parameters - System Settings (press PROGRAM to access this category) Summer heating in 1:SH... -
Page 36: Cm737-Category 4: Transparent Boiler Parameter
Alfa Laval Micro Installation and service instruction 8.2.4 CM737-Category 4: Transparent Boiler Parameter Parameter Para Factory Default Setting Optional Setting meter Display Description Display Description Category 4 Parameters: Transparent Boiler Parameter Setting Display (press PROGRAM to access this category) 4) -
Page 37: Cm721- Installer Parameters Table
Alfa Laval Micro Installation and service instruction CM721– Installer parameters table 8.3.1 CM721- Category 1: Room Thermostat Settings Parameter Parameter Factory Default Setting Optional Setting Category 1 Parameters – Room Thermostat Settings Display Description Display Description 12 hr. – AM/PM clock... -
Page 38: Cm721- Category 2: System Settings
Alfa Laval Micro Installation and service instruction 8.3.2 CM721- Category 2: System Settings Parameter Parameter Factory Default Setting Optional Setting Category 2 Parameters – System Settings (press the button to access this category) Display Description Display Description Minimum boiler 1:Ot... -
Page 39: Troubleshooting The Cm737
Alfa Laval Micro Installation and service instruction 9 Troubleshooting the CM737 Symptom Possible Cause Remedy The CM737 receives power The CM737 is not connected to supply from the heating the correct terminals of the A flashing symbol appliance, but no information. -
Page 40: Fault Codes On The Cm737
Alfa Laval Micro Installation and service instruction Fault Codes on the CM737 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 Error code No fault (power-up) -
Page 41: Troubleshooting The Cm721
Display shows symbol. If the symbol does not clear after a few minutes contact Alfa Laval. Display shows the The installer has set a scheduled Call your installer to arrange a word 'SERVICE' maintenance alert period on your maintenance visit. -
Page 42: Diagnostic Mode, Cm721
Alfa Laval Micro Installation and service instruction 10.1 Diagnostic mode, CM721 The CM721 room thermostat has a user accessible mode that provides information useful to a remote service person and a means of checking whether the boiler is working. To access this: Press the OFF button, then press and hold the button for 5 seconds. -
Page 43: Differential Pressure Control Valve, Dpc
Alfa Laval Micro Installation and service instruction 11 Differential pressure control valve, DPC 11.1 Setting the DPC valve Set the valve to the differential pressure 25kPa. Start with the valve at minimum position and then open with 3 numbers of turns. -
Page 44: Electrical Circuit Diagram
Alfa Laval Micro Installation and service instruction 12 Electrical circuit diagram Micro RTC Picture 35... - Page 45 Alfa Laval Micro Installation and service instruction Micro STC and Micro STC2 Picture 36...
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Page 46: Schematic Diagram, Main Components
Alfa Laval Micro Installation and service instruction 13 Schematic diagram, main components 13.1 AquaMicro Picture 37 13.2 Micro DPC Picture 38... -
Page 47: Micro Rtc
Alfa Laval Micro Installation and service instruction 13.3 Micro RTC Picture 39 13.4 Micro STC Picture 40... -
Page 48: Micro Stc2
Alfa Laval Micro Installation and service instruction 13.5 Micro STC2 Picture 41 13.6 Micro HTC Picture 42... -
Page 49: Service Instructions
The stabilisation time for the hot water temperature is about 20 seconds. NOTE! Alfa Laval recommends that the tap water temperature is set to 10º less than the primary inlet temperature. If a HTC the temperature must be 15º less than the primary inlet temperature. -
Page 50: Tap Water Temperature Too High
Alfa Laval Micro Installation and service instruction Reason Action Check the function of the Hot water valve does not work valve for hot water. Release the actuator from the valve. Picture 44 Carefully press the valve’s spindle with a tool and check the valve’s travel and spring back. -
Page 51: Heating System Temperature Too High Or Too Low
15 category 1. If needed the set heating curve can be fine-tuned. Increase/ decrease the room temperature to parallel adjust the heating curve. Also see in the manual Operating Instruction AL Micro section heating curve Parallel adjustment of heating... -
Page 52: No Heating
Alfa Laval Micro Installation and service instruction Check the actuator and valve Heating valve and/or actuator function does not work Check the actuator by pulling out the electrical cable and refit it RTC/STC/HTC again; this will start an automatic self-test for the actuator. Check the flow using the energy meter while test-running the valve. -
Page 53: Disturbing Noise From The Circulation Pump/ Noise In The Radiator System
A. Heating system temperature too high or too low Reason Action Check and adjust the heating program in the room thermostat. The heating control equipment Operating Instruction AL Micro section Modifying the heating may need to be adjusted program in the room thermostat CM721. -
Page 54: No Heating
Alfa Laval Micro Installation and service instruction B. No heating Reason Action Check the batteries in the room thermostat Loss of function in the heating When the power is running low a flashing symbol will be displayed on the control unit. -
Page 55: Maintenance And Repairs
Alfa Laval Micro Installation and service instruction 15 Maintenance and repairs When carrying out repairs, please contact your local service partner. 15.1 Change the hot water actuator and exchanger Before starting out repairs always close the primary supply and return shutoff valves and drain the system with the draining valves. -
Page 56: Change The Heating Actuator
Alfa Laval Micro Installation and service instruction 15.3 Change the heating actuator 1. Disconnect the electrical power supply. 2. Unscrew the heating actuator from the valve. 3. Disconnect the cable from heating actuator in the connection box. 4. The cable to the heating actuator is held by straps, cut them off. -
Page 57: Change The Heating Circuit Supply Temperature Sensor
Alfa Laval Micro Installation and service instruction 15.6 Change the heating circuit supply temperature sensor 1. Disconnect the electrical power supply. 2. Disconnect the quick-connect terminals and replace the sensor with a new one. Picture 54 15.7 Change the outdoor temperature sensor 1. -
Page 58: Change The Flow Switch
Alfa Laval Micro Installation and service instruction 15.9 Change the flow switch Before starting out repairs always close the primary supply and return shutoff valves and drain the system with the draining valves. After finishing repair; open the shutoff valves. Start with primary supply and then the return lines, in order to avoid pollutions in the system. -
Page 59: Options
1°C steps 16.2 First fix-jig To save time and efficiency the installation, Alfa Laval offers a first-fix- jig including shut-off valves. The first fix- jig is available in three different models, with five, six or seven shut-off valves. Picture 61... -
Page 60: Declaration Of Conformity
Alfa Laval Micro Installation and service instruction 17 Declaration of conformity...
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