EN System Control HeatMaster ® 25 - 35 - 45 - 70 - 85 - 120 TC 71 - 101 - 201 660Y1400-A
EN Table of Contents General Recommendations................................ 3 User's Guide............................................................... 4 Communication Mode (with code) :.................................................... 29 Fan Mode (with code) :.................................................................................... 29 Error Mode (with code) :................................................................................. 29 How to use this manual.......................
EN General Recommendations note this manual contains important information with respect to the installation and set-up of the boiler. this manual must be provided to the installer, who will keep it in a safe place. We accept no liability should any damage result from the failure to comply with the instructions contained in this technical manual.
EN User's Guide How to use this manual This manual is for the exclusive use of ACV-approved installers. After a short description of the control module (MCBA) and of the keys used to make the adjustments, the manual includes a section with the installation diagrams and a list of the accessories required for each specific installation. The electrical connection diagrams are also included as well as the specific settings of the MCBA to be made using an access code provided by ACV.
EN Appliance Description The MCBA is an electronic control module and a regulator for gas boilers, developed by Honeywell and fitted with a microprocessor. It includes several basic functions: temperature control, flame monitoring, heating pump control, fan control, 3-way valve control, electrical ignition and boiler control. Its control panel also displays, through codes, the boiler operational condition, the mode in which it is operating and the possible faults in the system.
EN Connection Diagrams and Accessories High-temperature heating circuit controlled by a room thermostat Cold water Hot water 1 2 MCBA en 6 660Y1400-A
EN Connection Diagrams and Accessories Required optional material Applicable to Description Code 1 All HM TC models Room thermostat ACV 22 10800018 2 HM 25 / 35 / 45 TC High temperature kit DN 25 : comprised of a heating pump, two isolating valves, a check valve, two thermometers. 10800294 2 HM 70 / 85/ 120 TC High temperature kit DN 32 : comprised of a heating pump, two isolating valves, a check valve, two thermometers.
EN Connection Diagrams and Accessories Block diagram for wiring in accordance with applicable standards. Remove this link to connect the room thermostat.
EN Connection Diagrams and Accessories Setting the MCBA Initial Adjusted Description 3. 0 1 3. 0 1 00 : Heating mode “OFF” 01 : Heating mode “ON” 4. 85 4. 85 Preset temperature for the heating circuit water (adjustable between 30 and 85°C). p. 45 . 00 p. 45 .
EN Connection Diagrams and Accessories Installation of two heating circuits controlled by room unit and ZMC-2 module Cold water Hot water 5 1 4 2 3 3 7 M 7 M 2 MCBA 6 en 10 660Y1400-A
EN Connection Diagrams and Accessories Required optional material Applicable to 1 All HM TC models 2 All HM TC models Description Code Room Unit RSC Delivered with outdoor sensor ZMC-2 Module (kit) Manages the second heating circuit - alarm contact - only functions in conjunction with the Room Unit RSC. 10800034 10800218 X2 All HM TC models Clip-in interface RMCIEBV3 Enables communication between the MCBA and the Room Unit RSC.
EN Connection Diagrams and Accessories 230 Volt - 6A 50Hz PE N L 230 Volt - 6A 50Hz PE N L VA L 1 2 3 N N N N M Block diagram for wiring in accordance with applicable standards.
EN Connection Diagrams and Accessories Setting the MCBA Initial 1. 60 2. 0 1 3. 0 1 4. 85 Adjusted 1. 60 2. 0 1 3. 0 1 4. 85 Description Maximum temperature of preset Domestic Hot Water temperature 00 : DHW mode “OFF” 01 : DHW mode “ON” 00 : Heating mode “OFF” 01 : Heating mode “ON” Maximum temperature of the heating circuit (must be higher than the DHW temperature).
EN MCBA Parameters for the Specialist Stand-by Mode ( ) When the boiler is switched on, it starts up in Stand-by mode, as shown in the figure above. This is the standard mode of the MCBA. The MCBA automatically returns to this mode after 20 minutes if no key is pressed on the MCBA interface. The new parameters will become active. The first digit indicates the boiler’s current status, depending on the situation of the boiler and the burner. The last two digits indicate the boiler temperature.
EN MCBA Parameters for the Specialist If the burner is blocked for one of the above reasons, the display toggles between "9" and the temperature (last two digits) and “b” with the error code Once the cause of the blocking has been resolved, the burner starts up automatically after a maximum of 150 seconds.. Status Boiler Function Internal adjustment — Three-way valve Boiler burner on - temperature is maintained Test function: max RPM in CH mode. Test function: min RPM in CH mode.
EN MCBA Parameters for the Specialist Parameter Mode ( ) Setting the MCBA Parameters To access the Parameter mode when the system is in Standby mode, press the “MODE” key once. To scroll through the list of parameters press the “STEP” key. To modify the value of the parameter, use the “+” or “-” keys. Then, press the “STORE” key to save the modified value. The screen will flash once to confirm the data has been saved.
EN MCBA Parameters for the Specialist info Mode ( ) Display Information on the installation To switch from Stand-by mode to Info mode, press the “MODE” key twice Press the “STEP” key until the desired information is displayed. The dot located behind the first position flashes to indicate that the boiler is in Info mode. MODE MODE STEP Display Parameter Description 1. 60 Flow temperature T1 in °C 2. 50 Return temperature T2 in °C 3. 65 DHW temperature T3 in °C 4.
EN MCBA Parameters for the Specialist STEP Display Parameter Description 8. 00 Rate of increase of return temperature in °C/s 9. 00 Rate of increase of DHW temperature in °C/s a. 34 Flow temperature of 2nd central heating circuit N/A c. 00 N/A N/A E. 00 Ionisation current F. 00 N/A N/A h. 42 Internal MCBA temperature i.
EN MCBA Parameters for the Specialist STEP Display Parameter Description Number of CH starts [ x 100] Number ofCH starts [ x 1] Number of hours of CH operation [ x 10000] Number of hours of CH operation [ x 100] Number of hours of CH operation [ x 1] Number of DHW starts [ x 10000] Number of DHW starts [ x 100] Number of DHW starts [ x 1] Number of hours of DHW operation [ x 10000] Number of hours of DHW operation [ x 100] Number of hours of DHW operation [ x 1] en 660Y1400-A 19
EN MCBA Parameters for the Specialist Code Mode ( ) Entering the code By entering the code you can access from Parameter 10 to Parameter 113 and consult the communication mode, the fan speed mode and the Error mode. Only ACV approved installers know the access code. For more information, please contact our after-sales service. To access the Code mode, press simultaneously on MODE and STEP.
EN MCBA Parameters for the Specialist Setting the parameters Only accessible using the code Factory settings STEP Display Parameter Description HM 25 / 35 / 45 / 70 / 85 / 120 TC HM 71 / 101 / 201 p. 1 0 Minimum central heating temperature using outdoor sensor.. . 60 . 60 p. 1 1 Minimum outdoor temperature [adjustment of the heating curve]. .-10 . 00 p. 12 Maximum outdoor temperature [adjustment of the heating curve]. . 18 . 20 p. 13 Frost protection temperature. .01 . 05 p.
EN MCBA Parameters for the Specialist Setting the Parameter: only accessible using the code Factory settings STEP Display Parameter Description HM 25 TC HM 35 TC HM 45 TC Booster 00 = OFF [minute]. . 00 .10 . 00 .10 p. 19 p. 20 Night time central heating reduction (°C). . 00 .10 p. 21 Increase of the primary temperature set point to generate hot water.. . 20 . 20 . 20 p. 22 Max. fan speed in heating mode [rpm. x 100]. p. 23 Max. fan speed in central heating mode [rpm.]. p.
EN MCBA Parameters for the Specialist Factory settings HM 70 TC HM 85 TC HM 120 TC HM 71 HM 101 HM 201 . 00 .10 . 00 .10 . 00 .10 . 00 .10 . 00 .10 . 00 .10 .10 .10 .10 . 05 . 05 . 05 . 49 . 45 . 00 . 00 . 49 . 45 . 00 . 00 . 19 . 19 . 00 . 00 . 60 . 55 . 00 . 00 . 65 . 60 . 00 . 00 . 19 . 19 . 00 . 00 . 53 . 53 . 00 . 00 . 53 . 53 . 00 . 00 . 13 . 13 . 00 . 00 . 46 . 42 . 00 . 00 . 46 . 42 . 00 . 00 . 14 . 14 . 00 . 00 . 60 . 54 . 00 . 00 . 60 . 54 . 00 . 00 . 15 . 15 . 00 . 00 .
EN MCBA Parameters for the Specialist Setting the Parameter: only accessible using the code Factory settings STEP Display Parameter Description HM 25 TC HM 35 TC HM 45 TC . 36 . 36 . 30 . 36 . 36 . 30 . 36 . 36 . 30 Natural gas P. 28 Fan speed during ignition [rpm x 100]. P. 29 Fan speed during slow start [rpm. x 100] P. 30 Min. power time after start-up in CH mode [sec. x 9,0] Central heating pump over run 00 = 10 sec. [min.] . 00 . 00 . 00 . 00 . 00 .
EN MCBA Parameters for the Specialist Factory settings HM 70 TC HM 85 TC HM 120 TC HM 71 HM 101 HM 201 . 39 . 39 . 30 . 39 . 39 . 30 . 44 . 44 . 30 . 35 . 32 . 30 . 42 . 38 . 30 . 37 . 32 . 30 . 00 . 00 . 18 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 .11 . 02 . 03 . 00 . 06 . 05 . 00 .11 . 02 . 03 . 00 . 06 . 05 . 00 .11 . 02 . 03 . 00 . 06 . 05 . 00 .11 . 01 . 03 .01 . 03 . 04 .01 .11 . 01 . 03 .01 . 03 . 04 .01 .11 . 01 . 03 .01 . 03 . 04 .01 . 05 . 05 . 05 . 00 .
EN MCBA Parameters for the Specialist Factory settings STEP Display P. 41 P. 42 P. 43 P. 45 P. 46 P. 47 P. 53 P. 57 P. 64 P. 65 P. 66 P. 76 P. 77 P. 78 P. 79 P. 83 Parameter Description Domestic hot water block time [sec. x 10,2]. DHW CH locking time [sec. x 10,2]. Max. operating time in DHW mode [min.] 00 : High temperature circuit - heating pump controlled by room thermostat - DHW priority active.
EN MCBA Parameters for the Specialist Factory settings HM 70 TC HM 85 TC HM 120 TC HM 71 HM 101 HM 201 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 00 . 02 .-0 1 . 00 . 00 . 25 . 30 . 25 .10 .10 . 40 . 20 .1 20 . 02 .-0 1 . 00 . 00 . 25 . 30 . 25 .10 .10 . 40 . 20 .1 20 . 02 .-0 1 . 00 . 00 . 25 . 30 . 25 .10 .10 .10 . 05 .1 20 .12 .-0 1 . 00 . 00 . 25 . 30 . 30 .16 .10 . 60 .10 .1 20 .12 .-0 1 . 00 . 00 . 25 .
EN MCBA Parameters for the Specialist Factory settings STEP Display Parameter Description HM 25 TC HM 35 TC HM 45 TC HM 70 TC HM 85 TC HM 120 TC HM 71 HM 101 HM 201 . 80 . 80 . 80 . 80 . 30 . 30 . 30 . 30 . 30 . 20 . 20 . 20 . 20 . 20 . 20 . 10 . 10 . 10 . 10 . 15 . 15 . 15 . 92 . 92 . 92 . 92 . 92 . 92 . 92 . 93 . 05 . 05 . 05 . 05 . 05 . 05 . 05 . 05 . 05 Maximum NTC1-NTC2 time [sec. X 15] Minimum to maximum time in CH mode [sec.] . 40 . 40 . 40 . 40 .
EN MCBA Parameters for the Specialist Communication Mode (with code) : This mode indicates communication between the boiler and the control module. MODE Display STEP Display Parameter Description No communication Communication only between the boiler module and the optional control module. Communication between all the connected appliances. The interface kit and the programmable room thermostat are available as an option. Fan Mode (with code) : This mode indicates the current fan speed.
EN Block age and Error Codes List of error codes + solutions [in error mode] If a fault occurs during operation, the system locks out and the display starts to flash. The first character is an “E” or “b” and the following two indicate the code of this fault, as indicated in the table below. To unlock the system: • Press "RESET" on the MCBA interface. • If the fault repeats, check the error codes below to solve the problem. Codes Fault description Fault solutions E 00 Abnormal flame signal detected 1.
EN Block age and Error Codes Codes Fault description Fault solutions E 15 Internal error If the problem persists after two “RESET” attempts, replace the MCBA E 16 Internal error If the problem persists after two “RESET” attempts, replace the MCBA E 17 Internal error If the problem persists after two “RESET” attempts, replace the MCBA E 18 t1 > 110°c 1. Check the NTC wiring and replace if necessary 2.
EN Block age and Error Codes Codes Fault description Fault solutions E31 Short-circuit NTC1 1. Check the connection of the NTC1 sensor 2. Check the wiring of the NTC1 sensor 3. If the problem persists replace the NTC1 sensor E 32 Short-circuit NTC2 1. Check the connection of the NTC2 sensor 2. Check the wiring of the NTC2 sensor 3. If the problem persists replace the NTC2 sensor E 33 Short-circuit NTC3 1. Check the connection of the NTC3 sensor 2. Check the wiring of the NTC3 sensor 3.
EN Block age and Error Codes Fault description Fault solutions Air pressure switch closed when it should have opened Check the air pressure switch Water pressure Check the water pressure Incorrect fan speed during start-up 1. Check the supply voltage of the MCBA 2.
