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Alfa Laval Micro 

Installation and service instruction 

18 

 

 

Installing the room thermostat 

3.2

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.  

 

 

The room thermostat must not 
be combined with other 
thermostats in the same control 
zone.  

 

Picture 11 

Содержание AquaMicro

Страница 1: ...DOC 1355 3rd June 2014 Installation and service instruction Alfa Laval Micro Heating domestic hot water substation for apartments and single family houses...

Страница 2: ......

Страница 3: ...he room thermostat CM737 20 3 4 Configure the room thermostat after installation 20 3 5 Setting the time 20 3 6 Setting the time 21 3 7 4 Installing the CM721 wireless system 22 General 22 4 1 Room th...

Страница 4: ...temperature too high 50 C Hot water temperature unstable or too low 50 D Heating system temperature too high or too low 51 E No heating 51 F Heating temperature unstable 51 STC service instructions 51...

Страница 5: ...on To avoid the risk of scalding make sure that no one draws any hot water until the hot water temperature has been adjusted Start heating circulation by first opening the valves in the primary heatin...

Страница 6: ...trol valve for hot water 10 Heating network media supply 3 Temperature sensor connection heating media supply 11 Heating network media return 4 Filter for heating media 12 Cold water cw 5 Adapter for...

Страница 7: ...turn 3 Temperature sensor connection heating media supply 12 Cold water cw 4 Filter for heating media 13 Cold water outlet cw 5 Adapter for energy meter 14 Hot water hw 6 Check valve for cold water 15...

Страница 8: ...ating circuit return 5 Adapter for energy meter 17 Heating circuit supply 6 Check valve for cold water 18 Flow switch for domestic hot water option 7 Adapter for Cold water flow meter 19 Control valve...

Страница 9: ...eating circuit 6 Check valve for cold water 20 Actuator heating circuit 7 Adapter for Cold water flow meter 21 Connection box for electric power and sensors heating circuit 8 Safety valve for domestic...

Страница 10: ...ing circuit 6 Check valve for cold water 22 Room thermostat control panel 7 Adapter for Cold water flow meter 23 Outdoor temperature sensor option 8 Safety valve for domestic hot water 24 Check valve...

Страница 11: ...ater 16 Heating circuit return 7 Adapter for Cold water flow meter 17 Heating circuit supply 8 Safety valve for domestic hot water 19 Control valve heating circuit 9 Adapter for Hot water flow meter 2...

Страница 12: ...as little as possible This means that the system should be installed on well insulated walls such as outer walls or on concrete walls Check the applicable regulations of the primary heating supplier...

Страница 13: ...ghten with 45 Nm Bleed the heating system Start the heating circulation pump with the highest output setting Let the heating system heat up and bleed the system again Set the pump capacity of the heat...

Страница 14: ...e CM721 wireless system Mounting options Micro STC 2 4 2 See 3 Installing the room thermostat CM737 Mount the outdoor temperature sensor option on the north side of the building 2 metres above the gro...

Страница 15: ...primary inlet temperature NOTE Make sure that no cold water is mixed with the hot water while making this adjustment The property owner must be instructed in the operation setting and care of the uni...

Страница 16: ...Alfa Laval Micro Installation and service instruction 16 Measure sketch 2 9...

Страница 17: ...tton green 14 Time change buttons 5 Temperature display 10 Holiday function button Micro STC and Micro STC2 with CM737 are supplied fully wired The wiring conforms to the applicable rules for CE marki...

Страница 18: ...on 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 i...

Страница 19: ...Alfa Laval Micro Installation and service instruction 19 Picture 12...

Страница 20: ...ctuator closes 10s pump runs 150s actuator closes After approximately another 4 minutes CM737 changes from start up to normal regulation 3 Press the MAN 8 button for a fixed set point no reduction of...

Страница 21: ...tored Setting the time 3 7 1 Press either of the or buttons once to enter timer setting mode The LCD screen flashes the time digits When the unit is powered for the first time the display shows 12 00...

Страница 22: ...ure 14 1 LCD display 6 Temperature change buttons 11 Battery cover 2 Battery low indicator 7 Temperature enquiry button 12 Program buttons 3 Time display 8 Operating mode buttons 13 Time change button...

Страница 23: ...o take into consideration that wall and ceilings will reduce the RF signal The strength of the RF signal reaching the relay box depends on the number of walls and ceilings separating it from the room...

Страница 24: ...trations 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...

Страница 25: ...d but the time needs to be adjusted Setting the Date 4 6 2 1 Press the DATE DAY button to begin setting the date When you set the date for the first time after the batteries are inserted the display w...

Страница 26: ...display TEST TRANSMIT and it will send test signals to the relay box flashing the green LED on every 6 seconds relay output will remain off for a maximum of 10 minutes When the green LED flashes on ev...

Страница 27: ...smission is reliable Reliable transmission is indicated when the relay box is flashing the green LED every 6 seconds NOTE The relay box relay will be off The room thermostat should be installed in an...

Страница 28: ...nds and the symbol appears on the room thermostat LCD display 5 Press the OFF button The boiler will go off green LED OFF on relay box after a few seconds and the symbol disappears 6 Check the system...

Страница 29: ...ored data After 15 seconds the red LED will change to flashing 0 1sec on 0 9sec off NOTE After 5 seconds the red LED will start to flash 0 5sec on 0 5sec off but continue to hold the button Picture 23...

Страница 30: ...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 If the red LED still flashes push the button again u...

Страница 31: ...on to match the current requirements of the system The green LED indicates the status of the relay output Green LED on relay on Green LED off relay off Picture 28 Temporary manual override 6 3 Pressin...

Страница 32: ...tat stops communicating due to discharged batteries The factory setting keeps the relay permanently off when communications is lost If this factory setting needs to be changed follow the instructions...

Страница 33: ...nly available for H73 Category 5 Fault History only available for H73 Entering the installer set up mode 8 1 1 Press the OFF button 2 Press and hold the button and the two PROGRAM and buttons together...

Страница 34: ...er Temp Limit 6 uL 35 35 C Upper Temp Limit 21 to 34 21 C to 34 C adjustment in 1 C steps Lower Temp Limit 7 LL 5 5 C Lower Temp Limit 6 to 21 5 C to 21 C adjustment in 1 C steps Temperature Offset 12...

Страница 35: ...isplay Description Display Description Category 3 parameters Boiler settings press PROGRAM to access this category Maximum central heating set point 2 1 CH 90 90 C or obtained from the boiler 40 to 90...

Страница 36: ...lay Description Category 5 Parameters Fault History press PROGRAM to access this category 5 In this category the occurred boiler errors can be viewed beginning with the most recent boiler error 1 Only...

Страница 37: ...Upper Temp Limit 6 uL 35 35 C Upper Temp Limit 21 to 34 21 C to 34 C adjustment in 1 C steps Lower Temp Limit 7 LL 5 5 C Lower Temp Limit 5 to 21 6 C to 21 C adjustment in 1 C steps Optimisation 8 OP...

Страница 38: ...m Synchronisation 6 Sn 0 Standard operation of the Room Unit 1 Room unit configured as Synchroniser Loss of Communications Instruction 7 LC 0 Relay Off 1 Relay 20 on 80 off Note 1 Remember to always p...

Страница 39: ...Alfa Laval Display is blank After installing the CM737 no power to the heating appliance is supplied and the rechargeable battery hasn t been charged takes max 1hr until fully charged Check if the po...

Страница 40: ...easured outside temperature has been in range 40 C to 60 C Cause Measured outside temperature lies below 40 C or above 60 C Actions When the thermostat asks for the outside temperature the DHC will re...

Страница 41: ...ns in section 4 Installing the CM721 wireless system Replace batteries in the room thermostat NOTE The boiler can be controlled manually when the RF communication is lost Press the BDR91 push button t...

Страница 42: ...s of checking whether the boiler is working To access this 1 Press the OFF button then press and hold the button for 5 seconds 2 The room thermostat will enter the user settings mode 3 Next press and...

Страница 43: ...the DPC valve 11 1 Set the valve to the differential pressure 25kPa Start with the valve at minimum position and then open with 3 numbers of turns Use a 4mm hexagonal key NOTE Always start from the mi...

Страница 44: ...Alfa Laval Micro Installation and service instruction 44 12 Electrical circuit diagram Micro RTC Picture 35...

Страница 45: ...Alfa Laval Micro Installation and service instruction 45 Micro STC and Micro STC2 Picture 36...

Страница 46: ...Alfa Laval Micro Installation and service instruction 46 13 Schematic diagram main components AquaMicro 13 1 Picture 37 Micro DPC 13 2 Picture 38...

Страница 47: ...Alfa Laval Micro Installation and service instruction 47 Micro RTC 13 3 Picture 39 Micro STC 13 4 Picture 40...

Страница 48: ...Alfa Laval Micro Installation and service instruction 48 Micro STC2 13 5 Picture 41 Micro HTC 13 6 Picture 42...

Страница 49: ...the control valve The hot water temperature can be controlled by turning the handle on the control valve for domestic hot water anti clockwise for increased tap water temperature To decreasing tap wat...

Страница 50: ...B1 Handle on control valve incorrectly positioned Adjust the handle on the control valve See A2 B2 Hot water valve and or actuator does not work Check the function of the valve and actuator for hot w...

Страница 51: ...available differential pressure and temperature at the primary heating medium provider G2 Filter for heating media clogged Check that the filter for heating media is not blocked See A3 G4 Differential...

Страница 52: ...e highest setting Check the heating parameters in room thermostat Summer reduction Economy function parameter 2 category 2 If measured outdoor temperature is higher than target temperature the pump sh...

Страница 53: ...e DPC for information how to set the valve D Heating temperature unstable Reason Action D1 Heating supply temperature sensor and outdoor temperature sensor option does not work Check the heating suppl...

Страница 54: ...too low Reason Action A1 Differential pressure control valve incorrectly adjusted option Check the settings for the differential pressure control valve See chapter 11 Differential pressure control val...

Страница 55: ...ur nuts on the heat exchanger 2 Separate the actuator from the valve 3 Refit a new heat exchanger actuator and open the shutoff valves Picture 49 Change the hot water valve 15 2 Before starting out re...

Страница 56: ...he heating actuator from the control valve 2 Use a spanner to remove the control valve Note the arrow direction on the valve 3 Mount a new valve and take especially care to the arrow direction 4 Faste...

Страница 57: ...e cable fitting 5 Install a new outdoor temperature sensor Picture 55 Change the differential pressure control valve 15 8 Before starting out repairs always close the primary supply and return shutoff...

Страница 58: ...lutions in the system Open up the valves slowly to avoid pressure surges 1 Disconnect the substation electrical power supply cable Disconnect the electrical plug to the flow switch 2 Loosen the nut th...

Страница 59: ...electrical wires on primary heating pipes and sharp edges Set recommended settings for under floor heating systems Instructions regarding installation parameters see chapter 8 Parameters and recommen...

Страница 60: ...Alfa Laval Micro Installation and service instruction 60 17 Declaration of conformity...

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