H0002997.04 www.caleffi.com LEGIOMIX® electronic mixing valve 6000 series © Copyright 2020 Caleffi INSTALLATION AND COMMISSIONING MANUAL Function The electronic mixing valve is used in centralized systems that produce and distribute domestic hot water. It maintains the temperature of the domestic hot water delivered to the user when there are variations in the temperature and pressure of the hot and cold water at the inlet or in the draw-off flow rate.
SAFETY INSTRUCTION This safety alert symbol will be used in this manual to draw attention to safety related instructions. When used, the safety symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD. CAUTION: All work must be preformed by qualified personnel trained in the proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.
CONSIGNE DE SÉCURITÉ Ce symbole d'avertissement servira dans ce manuel à attirer l'attention sur la sécurité concernant instructions. Lorsqu'il est utilisé, ce symbole signifie. ATTENTION! DEVENEZ ALERTE ! VOTRE SÉCURITÉ EST EN JEU ! NE PAS SUIVRE CES INSTRUCTIONS PEUT PROVOQUER UN RISQUE DE SECURITE. ATTENTION: Tous les travaux doivent être effectués par du personnel qualifié formé à la bonne application, installation et maintenance des systèmes conformément aux codes et règlements locaux.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. AVERTISSEMENT: Ce produit peut vous exposer à des produits chimiques comme le plomb, qui est connu dans l’État de Californie pour causer le cancer, dommages à la naissance ou autre. Pour plus d’informations rendez-vous www.P65Warnings.ca.gov.
Controller, LCD user interface/display Materials: - Housing: - Cover: Electric supply: Power consumption: Adjustment temperature range: Disinfection temperature range: Ambient temperature range: Protection class: Mounting bracket: self-extinguishing ABS, color white RAL 1467 self-extinguising SAN, smoked transparent 24 VAC (min 21.6, max 26.0 VAC)- 50/60 Hz (115/24 VAC transformer included in package) 6.
Characteristic components 1 3 THURSDAY 10/12/2017 TM127• F TR120 • F ADJUSTMENT RUNNING + - 7 4 2 0 °C 1) 1)Legiomix digital regulator LEGIOMIX® digital controller 5 2) 2)Mixing Mixingvalve valve Mixingvalve valve ac 24tuator V 3-wire floating actuator 3) 3)Mixing Mixedwater outletflow water temperature sensor 4) 4)Mixed probe 5) Return water (recirculation) temperature strap-on sensor 5) 6)R Mixed eturn probe (rec irc ulation) outlet water temperature gauge 6) 7)Mixed water flow temperature gauge Act
Operating principle The electronic mixing valve mixes hot water from storage and cold water from the main supply to maintain a constant controlled set temperature of mixed water at the outlet. The controller measures the temperature of the mixed water at the valve outlet with temperature sensor and modulates the mixing valve position to maintain the desired set temperature.
Relay 3 Relay 2 Relay contacts Relay 4 Relay 1 Mixed °C TUESDAY Return °C ADJUSTMENT IN PROGRESS Ok Menu Ok OPTIONAL MODBUS/ BACNET GATEWAY 24 VAC RELAY 1, 2, 3, 4 A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 RS485 MODBUS 2-WIRE COMMUNICATION* MIXED OUTLET WATER TEMPERATURE SENSOR RUN ERR RX TX PWR 80 190 210 RETURN WATER TEMPERATURE STRAP-ON SENSOR LEGIOMIX POWER SUPPLY: 24 V~ 6 VA IP 54 T50 (Main) FUSE 2 (Mix) 19 20 21 1A/24V~ T 400 mA T 1A A RS485 Series 6000 H0002885 contr
Back panel To remove the electrical wiring base, turn it round and extract it from its housing.
Temperature sensor resistance values ºF ºC Ω ºF ºC Ω ºF ºC Ω ºF ºC Ω -5 -20 100254 60 15 15310 130 54 3049 200 93 829 5 -15 72937 70 21 11882 140 60 2489 210 99 702 15 -10 53669 80 27 9297 150 65 2044 220 104 598 25 -4 39919 90 32 7333 160 71 1688 230 110 511 32 0 32648 100 38 5827 170 77 1402 240 115 439 40 4 26100 110 43 4664 180 82 1171 250 121 378 50 10 19900 120 49 3758 190 88 983 Enabling functionsDipswitch se
Connection cable cross-sections and lengths for circuit board wiring Cable seal No. Cable type Unsheathing (in/mm) including stripping (L) 1 3 x AWG 16 5 / 130 2 6 x AWG 18 6 / 150 3 2 x AWG 18 8.25 / 210 4 2 x AWG 18 8.25 / 210 5 3 x AWG 18 8.25 / 210 6 2 x AWG 16 6.25 / 160 7 2 x AWG 16 6.25/ 160 8 2 x AWG 16 7 / 180 9 2 x AWG 16 6.
Front panel 1 2 3 4 5 Mixed °C Return °C THURSDAY 10/12/ 2017 O TM127 F TR120OF ADJUSTMENT RUNNING Shock 7 Menu 6 Ok Ok 8 9 Cut the wires of the auxiliary microswitch (if not used) and insulate electrically before wiring (colors: white, green and red). 1. LCD display* 2. LED display: Time 3. LED display: Tmixed- Mixed Outlet water temperature (°C only) 4. LED indicator - 5. LED display: Treturn - return water (recirculation) temperature (°C only) 6. Mixing valve open/close LED 7.
Indication description Indications on LED display LED indicators 3 LED displays on the front of the controller show the clock time and termperature of the mixed outlet water temperature and return temperature sensors at all times. The following LED indicators are located on the front of the controller: Time (24 hr clock) Mixed Outlet (°C) Electric power supply LED: red LED: steadily ON when voltage is present.
Operating status Depending on the times and the programs that have been set, the controller may be in one of the following operating modes.: • Adjustment; • Disinfection; • Flushing; • Thermal shock (this function has #1 priority over other modes) In the event of trouble due to the LEGIOMIX or the system, the device manages and reports the alarm and, depending on the situation, may maintain operation or not.
Confirming disinfection If, within the time span (Time OFF - Time ON), the actual disinfection time reaches tDIS is greater than the set tMIN, the disinfection is concluded with a positive outcome. It automatically exits this status and returns to the adjustment (modulating) mode. If the sufficient time tDIS is not reached, the disinfection phase ends at Time OFF.
Reset On the back panel, there is a specific reset button, in case it is necessary to retore the initial settings. If the date and time are not set after the reset, the controller will operate according to the factory default settings. Actuation relays The circuit board and terminals show the relay contacts used to manage auxiliary equipment and to report alarms.
Programs The operation of the controller during disinfection can be set according to different programs, selected depending on the type of system and management of the system. Set the program, and the day and time to turn on and turn off disinfection, in parameters in SETTINGS. Program 0 Features continuous mixed outlet water temperature modulation with automatic disinfection in a time band that can be set.
Thermal disinfection The temperatures and corresponding disinfection times for the network must be chosen according to the type of system and the related intended use. The following criteria is generally followed, guided by..... T = 160º F (70º C) for 10 minutes T = 150º F (65º C) for 15 minutes T = 140º F (60º C) for 30 minutes Thermal disinfection is generally performed during times of reduced system usage, ie: nighttime. This minimizes the potential for scald conditions to occur.
Entering programs and settings Controller operation is based on an internal clock with calendar and automatic time adjustment. By navigating through the appropriate menu items and using the buttons on the front panel (“MENU”. “UP” , “DOWN” , and “OK”), the user can configure the controller, set the various parameters, and display the temperature log.
Operating parameters The operating parameters can be set in the appropriate menus, and are summarized below: Summary of parameters. Setting ranges and factory (default) configuration. Parameter Description Setting Range Factory (default) configuration Language Language shown on LCD display I-E-F-D-ES-P-NLSL-HR-SR-RO ENGLISH Date/Time For Disinfection phase and log entries MM/DD/YY 01/01/2005 Daylight saving time setting USA CUS.
Parameter Description Setting Range Factory (default) configuration tPLAY Delay due to gap in mechanical components during actuator movement, until the internal valve ball starts to move in the opposite direction. from 0 to 255 sec in 1 sec steps 005 sec tMOTOR Time required for the actuator to move the valve from the full closed to the fully open position. Default setting is recommended for all applications, do not change. Consult Caleffi otherwise.
Log The “log” is a FIFO (First In - First Out, loop buffer) that is continually updated and records parameters relating to adjustment and disinfection phases that occurred during the day. Data are stored for the last 40 days, after which the data for the first day are overwritten, etc. The hourly average mixed outlet and return water termperatures are save to Eeprom every hour, and alarms are saved at the time they occur. The average hourly values of the current day can be viewed at any time.
Deleting the Log HISTORIC 06/ 04/ 2005 t DIS 060’ PGRM 1A TR MAX 130° TR MIN 120 ° ALARM --4-5-7- HISTORIC 06/ 04/ 2005 HISTORIC 06/ 04/ 2005 H 001 002 003 004 TM --- --- --- --TR --- --- --- --- H 007 008 009 010 TM120 120 120 122 TR 116 116 116 116 The log can be completely erased from the non-volatile memory, using this procdure: Select the “temperat.history” menu item and press the OK button. The display shows the data from the first log record available.
Menu structure table L evel 1 L evel 2 L evel 3 LANGUAGE S E L LANGUAGE S E L B u t t o n fu n c t io n s I - E - F - D - E S - P - NL - UP DOWN + OK S e t: da y/month/ye a r UP DOWN + OK S e t: time UP DOWN + OK USA - CUS. - NO - EUR UP DOWN + OK from 0 to 2 5 5 S L - HR - S R - R O Confirm the language when turning on the controller. If the language is not selected after 1 minute, the menu goes directly to the date and time selection step.
Operability after alarm (page 1) Type of alarm P rogram Indic ation by alarm L E D Indic ation by L E D dis play Dis play on L C D R ec ording in log AL 1: flow probe faulty 0 1A 1B 2 G eneric alarm LE D comes On and S tatus OK LE D goes Off. Alarm shown on LE D display. (“HI, “LO”, “S H”, “OP” depending on case). “Flow probe fault” alarm displayed on LC D. YE S (AL1) S tored in the day log. The alarm LE D remains Off and the “S tatus OK ” LE D remains On.
Operability after alarm (page 2) R elay s tatus Operating s tatus R elay 2 closed (if no alarms, the relay is normally open). In safe mode. Mixing valve closes, i.e. only cold water enters. Adjustment or disinfection or thermal shock is cancelled. All alarm indications are cleared when the cause of the alarm has been removed. R elay 2 open. The alarm relay does not change status. All functions are ensured.
H0002995 www.caleffi.
4= Friday FUNCTION 5= Saturday VALUE 6= Sunday 0x03 0x06 33 0021 Active functions b0: Presence of recirc.
Plumbing installation Before installing the LEGIOMIX electronic mixing valve, pipes must be flushed to prevent impurities in the water from affecting performance. Always install strainers of appropriately sized capacity at the inlet from the water main supply. Caleffi LEGIOMIX electronic mixing valves must be installed as shown below, conforming to applicable codes, and installed either vertically or horizontally, but the actuator must never be oriented upside down.
Alarm management To make it easier to resolve any functional faults that occur after installation and commissioning, the controller is configured so that faults are indicated by special alarms and the appropriate action is taken. The cause of the alarm is shown on the LCD display. If the alarm does not inhibit all the functions, the alarm screen will alternate with controller status screen.
Application diagrams Recirculation not connected to tank Non-return valve Ball valve Temperature gauge 20 Pump Expansion vessel T Thermostat T2 T1 Safety relief valve Strainer Clock 20 T2 T1 31 80 0 40 °C 60 Recirculation connected to tank 0 40 °C 80 preventer 60 B
The following information is provided in accordance with the Electronic Code of Federal Regulations (FCC) PART 15 — RADIO FREQUENCY DEVICES §15.105. §15.105 Information to the user.