Page 1
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. The LEGIOMIX®
electronic mixing valve provides precise temperature
control over very low and very high flow rate demand,
minimal pressure drop with a ball valve control element,
automatic self-cleaning to prevent scale formation and
easy-to-use digital interface with data logging, alarming
and status indication. The LEGIOMIX® electronic mixing
valve is furnished with a controller with LCD user
interface that provides a set of programs for circuit
thermal disinfection to kill Legionella. The controller is
configurable via keypad, or local or remote computer. Depending on the type of system and habits of
the user, temperature levels and operation times can be programmed as desired. In addition, it comes
standard with monitoring and remote control connections.
The LEGIOMIX® 6000 series electronic mixing valves meet the requirements of ANSI/NSF 372-2011
and are certified to ASSE 1017, CSA B15.3, UPC, IPC, Low Lead Laws and listed by ICC-ES for use
in accordance with the U.S. and Canadian plumbing codes.
LEGIOMIX® electronic mixing valve
6000 series
© Copyright 2017 Caleffi
H0002997
www.caleffi.com
INSTALLATION AND COMMISSIONING MANUAL
Product range
6000 series Electronic mixing valve with programmable thermal disinfection and male NPT
connections..............................................................................................sizes 1”, 1¼”, 1½” & 2”
6000 series Electronic mixing valve with programmable thermal disinfection and sweat
connections..............................................................................................sizes 1”, 1¼”, 1½” & 2”
NA10520 Modbus-to-BACnet gateway
1
Page 2
Leave this manual for the user.
CAUTION: If the electronic mixing valve is not installed, commissioned and
maintained properly, according to the instructions contained in this manual, it
may not operate correctly and may endanger the user.
CAUTION: Make sure that all the connecting pipework is water tight.
CAUTION: When making the water connections, make sure that the pipework
connecting the LEGIOMIX® electronic mixing valve is not mechanically overstressed.
Over time this could cause breakages, with consequent water losses which, in turn,
could cause harm to property and/or people.
CAUTION: Water temperatures higher than 100ºF (38ºC) can be
dangerous. During the installation, commissioning and maintenance
of the LEGIOMIX® electronic mixing valve, take the necessary
precautions to ensure that such temperatures do not endanger people.
CAUTION: To prevent any damage which will cause the electronic mixing
valve to not operate correctly, treat highly aggressive water before entering
the electronic mixing valve. Be sure water hardness is less than 10 grains.
SAFETY INSTRUCTION
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.
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: IMPORTANT: Risk of electric shock. The back panel and mixing valve
contain live circuits. Cut off the electric supply before performing work. Failure to follow
these instructions may result in injury of persons or damage to property.
CAUTION: When turning on confirm the desired language. English is the
default language. But, if not selected after 1 minute, the menu will go directly to
the date and time choice. Language can then be selected always in “settings”.
2
CAUTION: Safety measures must be in place before engaging disinfection
mode. Anti-scald protection devices, certified to ASSE 1016 or ASSE 1070,
at all downstream fixtures, must be installed.
Page 3
ATTENTION: Lorsque vous effectuez les raccordements d'eau, assurezvous que la tuyauterie reliant le LEGIOMIX® mitigeur électronique n'est pas
mécaniquement des overstressed. Au fil du temps, ceci pourrait causer des
ruptures, avec pour consequence des pertes en eau qui, à leur tour, peuvent
causer des dommages à la propriété et/ou les gens.
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.
ATTENTION:
Si le réducteur de pression, mitigeur électronique, n'est pas installé,
mis en service et entretenu correctement, selon les instructions contenues dans ce
manuel, il peut ne pas fonctionner correctement et peut mettre en danger l'utilisateur.
ATTENTION: S'assurer que tous les raccordements sont étanches.
ATTENTION: Les températures de l'eau supérieure à 100°F (38°C) peut
être dangereux. Au cours de l'installation, mise en service et l'entretien de
le réducteur de pression, le LEGIOMIX® mitigeur électronique, prendre les
precautions nécessaires afin de s'assurer que de tells températures ne
compromettent pas les gens.
ATTENTION: Risque de choc électrique. Le fond d’armoire et la vanne
mélangeuse sont sous tension. Couper l’alimentation électrique avant toute
intervention. Le non respect de ces règles de sécurité peut entraîner des dégâts
matériels et/ou des blessures aux personnes.
ATTENTION: Pour prévenir tout dommage qui provoque le mitigeur
électronique à ne pas fonctionner correctement, le traitement de l’eau très
agressive avant d’entrer dans la vanne de mélange électronique. Assurezvous que la dureté de l’eau est inférieure à 10 grains.
ATTENTION: Lors du passage de confirmer la langue désirée. L’anglais est la langue per
défault. Si la langue n’est pas sélectionnée après 1 minute, le menu Aller directement à la date
et l’heure de choix. La langue peut alors être sélectionné toujours dans “Paramètres”.
LAISSEZ CE MANUEL AVEC L’UTILISATEUR
3
ATTENTION: Des mesures de sécurité doivent être en place avant d’engager
le mode de désinfection. Les dispositifs de protection anti-brûlure, certifié à ASSE
1016 ou 1070 l’ASSE, à tous les appareils en aval, doit être installé.
CONSIGNE DE SÉCURITÉ
Page 4
Technical specifications
Valve body
Materials: - Body: DZR low-lead brass
- Ball: low-lead brass, chrome-plated
- Hydraulic seals: peroxide-cured EPDM
Max working pressure (static): 150 psi (10 bar)
Max. inlet temperature: 212°F (100°C)
Temperature gauge scale: 30 - 210°F
Suitable fluids: water
Max. water hardness: 10 grains
Main connections: -NPT male and sweat union
1", 1¼", 1½" and 2"
Actuator, 3-wire floating
Electric supply: 24 VAC - 50/60 Hz
Power consumption: 6 VA
Protection cover: self-extinguishing VO
Protection class: IP 65 (NEMA 4/4X)
Ambient temperature range: 14 – 130°F (-10 – 55°C)
Electric supply cable length: 31½” (0.8 m)
Controller, LCD user interface/display
Materials: - Housing: self-extinguishing ABS, color white RAL 1467
- Cover: self-extinguising SAN, smoked transparent
Electric supply: 24 VAC - 50/60 Hz
Power consumption: 6.5 VA
Adjustment temperature range: 70 – 185°F (20 – 85°C)
Disinfection temperature range: 100 – 185°F (40 – 85°C)
Ambient temperature range: 32 - 120°F (0 – 50°C)
Protection class: IP 54 (wall mounting)
(Class II appliance)
Contact rating (R1, R3, R4): 5 A resistance, 2 A inductance / 24 V
Mixing valve control: 5 A resistance, 2 A inductance / 24 V
Alarm relay (R2): 5 A resistance, 2 A inductance / 24 V
Fuses: 1 (main): 80 mA
Fuses: 2 (mixing valve): 1 A
Charge reserve: 15 days in the event of electric supply failure,
with a 3 cell rechargeable 3.6 V 140 mAh buffer battery
Battery recharging time: 72 hours
Approvals: CE, FCC part 15
Temperature sensors
Body material: stainless steel
Type of sensitive element: NTC
Working temperature range: 14 – 260°F (-10 – 125°C)
Resistance: 1000 Ohms at 77° F (25° C)
Time constant: 2.5
Max. distance for mixed outlet or return (recirculation) sensor:
500 ft (150 m) cable 2 conductor x AWG 18
800 ft (250 m) cable 2 conductor x AWG 14
4
Page 5
Recommended Flow Rates (gpm/lpm)
Size 1" 1¼" 1½" 2"
Minimum* 3.1 / 11.7 4.4 / 16.6 6.6 / 25 8.8 / 33.3
Maximum 93 / 352 109 / 413 150 / 568 212 / 803
Cv 21 24 34 47
*to ensure stable operation and ± 3º F accuracy.
Minimum flow rate is 0 gpm when recirculation flow rate
is greater than or equal to the valve size minimum flow
rating.
Mixing valve performance
Accuracy: ± 3º F (± 2º C)
Max. operating differential pressure (dynamic): 75 psi (5 bar)
Max. ratio between inlet pressures (H/C or C/H): 2.1
Characteristic components
°C
0
20
80
60
40
1
3
2
6
4
5
7
THURSDAY
T
M127
•
F TR120•F
ADJUSTMENT
RUNNING
1) Legiomix digital regulator
2) Mixing valve
3) Mixing valve actuator
4) Mixed water flow probe
5) Return probe (rec irculation)
6) Mixed water flow temperature gauge
7) Ac tuator fixing c lip
1) LEGIOMIX® digital controller
2) Mixing valve
3) Mixing valve 24 V 3-wire floating actuator
4) Mixed outlet water temperature sensor
5) Return water (recirculation) temperature strap-on sensor
6) Mixed outlet water temperature gauge
7) Actuator mounting clip
30
50
70
90
110
130
150
170
190
210
F
10/12/2017
+
-
Package contents
• Digital controller, consisting of housing and base for electric connection
• DIN bar and mounting wall anchors
• Mixing valve
• Actuator
• Mixed outlet water temperature sensor
• Return water temperature strap-on sensor
• Spare fuses
• Installation and commissioning manual
5
Page 6
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. Despite variations
in pressure drop or hot and cold water usage or variations in inlet temperature, the LEGIOMIX
®
automatically controls the water temperature to meet the temperature setting.
A built-in clock is used to enable optional disinfection cycle programs. The system is disinfected
by raising the water temperature to a specific value for a specific time duration. Using the
recirculation temperature sensor, water returning from the distribution circuits can be measured
for thermal distribution control. This measured temperature is used to check and control the
temperature reached over all or part of the distribution network with this sensor placed at the
end of the recirculation piping circuit.
The LEGIOMIX® can be used to confirm that the correct temperature and time for thermal
disinfection have been reached before taking the appropriate corrective action. All the parameters
are updated every day and logged, with temperatures recorded every hour.
There is an RS-485
connection for remote monitoring and configuration and, with specific relays, makes alarm
signals and controls available to other interconnected system devices. A Modbus-to-BACnet
gateway is available separately.
°C
0
2
0
8
0
6
0
4
0
LEGIOMIX®
Modbus-to-BACnet Gateway
BACnet
Building Automation System
Modbus
Building Automation System
recirculation sensor
mixed outlet sensor
Modbus-to-BACnet gateway for remote control
The LEGIOMIX® Modbus-to-BACnet gateway, code NA10520, allows the transfer of data to a
Building Automation System using BACnet communication protocol.
6
Page 7
IMPORTANT: Risk of electric shock. The back panel and mixing valve contain live circuits.
Cut off the electric supply before performaning any work. Failure to follow these instructions
may result in personal injury or damage to property.
7
OkMenuShock
Ok
Mixed °C Return °C
TUESDAY 1 / 02/ 2017
ADJUSTMENT
IN PROGRESS
°C
0
20
80
60
40
30
50
70
90
110
130
150
170
190
210
F
Relay contacts
Relay 1
Relay 2
Relay 3
Relay 4
FLUSH VALVES
(reduce temperature)
2nd THERMOSTAT
(aquastat)
ALARM
(unsuccessful
disinfection cycle)
RECIRC PUMP
(disinfection)
RS485 MODBUS 2-WIRE
COMMUNICATION*
24 VAC
OPTIONAL MODBUS/
BACNET GATEWAY
ETHERNET TO LAN
24 VAC FLOATING CONTROL
MIXED OUTLET WATER
TEMPERATURE SENSOR
RETURN WATER
TEMPERATURE STRAP-ON SENSOR
*RS485 ModBus is integral to the
controller. It may be used directly
and requires “mapping” by the
user to access the data, OR,
Optional gateway converts
ModBus data to BACnet data,
available to BAS (or any BACnet).
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
SPL
RUN
ERR
RX
TX
PWR
GND
Rx/Tx/+
+PWR
-PWR
FRAME GND
RELAY 1, 2, 3, 4
Page 8
Back panel
PIN
disable
Reset
Appliance fuse
80 mA-250Vdelayed
Mixing valve fuse
1 A - 250 V delayed
Relay contacts
Electric
supply
24 V
Mixing
valve
Battery connected
Battery disconnected
Battery connection
Thermal shock
activation
Shock
enabled
Shock
disabled
(factory setting)
Temperature
sensors
Mixed outlet
Return
Common
Relay 1
Relay 2
Relay 3
Relay 4
Closes
Common
Opens
Earth
Earth
Neutral
Live
PIN code
disabling button
Reset button
Screw to close
the front cover
with hole
for lead-sealing
RS485
Interface
terminal
Microswitch
for enabling
thermal shock
function
Temperature
sensor terminal
Battery
To remove the electrical wiring base, turn it round and extract it from its housing.
–
+
Connecting temperature sensors:
The cable connecting the mixed temperature outlet and return temperature sensors must be installed in a dedicated raceway. If the connection cable shares
the raceway with other live cables, an earthed shielded cable must be used.
In case of reverse polarity or power failure the system enters the BATTERY
ALARM STATUS, see “Alarms” section.
Buttons and terminals on side view
The base has two buttons, which can be accessed by opening the front cover:
-Reset button
-PIN code disabling button
side view
8
Page 9
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
Temperature sensor resistance values
Location of cable connectors
1
3
4
5
6
7
9
8
2
When making the electrical
connections, follow this sequence
for wiring the terminal strip and
tightening the seals:
1. Power supply*
2. Mixing valve control*
3. Mixed outlet temperature sensor
4. Return temperature sensor
5. RS485
6. Relay 3
7. Relay 1
8. Relay 4
9. Relay 2
Strain relief cord connectors (white)
are provided for all 9 controller
housing holes. Clear plastic plugs
also provided for unused holes.
*Factory pre-wired.
Enabling functionsDipswitch settings
-Thermal Shock enable/disable.
-Internal battery (do this during
installation)
PIN
disable
Reset
Appliance fuse
80 mA-250Vdelayed
Mixing valve fuse
1 A - 250 V delayed
Relay contacts
Electric
supply
24 V
Mixing
valve
Battery connected
Battery disconnected
Battery connection
Thermal shock
activation
Shock
enabled
Shock
disabled
(factory setting)
Temperature
sensors
Mixed outlet
Return
Common
Relay 1
Relay 2
Relay 3
Relay 4
Closes
Common
Opens
Earth
Earth
Neutral
Live
PIN code
disabling button
Reset button
Screw to close
the front cover
with hole
for lead-sealing
RS485
Interface
terminal
Microswitch
for enabling
thermal shock
function
Temperature
sensor terminal
Battery
To remove the electrical wiring base, turn it round and extract it from its housing.
–
+
ATTENTION: If the battery is not activated the battery alarm will be displayed.
CAUTION!
The controller is congured to automatically execute a daily rotation cycle to ensure efcient ball operation and cleaning. This occurs directly after the disinfection program, if
active, or after 24 hours have elapsed if disinfection is not active. Deactive this function
through the ANTI-CLOG setting by entering the release code 5566 and conrming with ON-
OFF. Eliminating this function increases the risk of deposits forming on moving parts of
valve. If it is necessary to eliminate the disinfection function as well, proceed as follows:
1. disable the ANTI-CLOG function; 2. eliminate the disinfection function.
9
Page 10
Cable seal No. Cable type
Unsheathing
(in/mm)
including stripping
(L)
1 3 x 1 5 / 130
2 6 x 0.75 6 / 150
3 2 x 0.75 8.25 / 210
4 2 x 0.75 8.25 / 210
5 3 x 0.75 8.25 / 210
6 2 x 1.5 6.25 / 160
7 2 x 1.5 6.25/ 160
8 2 x 1.5 7 / 180
9 2 x 1.5 6.25 / 160
Connection cable cross-sections and lengths for circuit board wiring
Connection layout: connections must not create thrust stresses on the circuit board
10
Page 11
OkMenuShock
Ok
Mixed °C Return °C
1
8 97
65432
THURSDAY 10/12/ 2017
T
M
127OF TR120OF
ADJUSTMENT
RUNNING
Front panel
1. LCD display*
2. LED display: Time
3. LED display: Tmixed- Mixed Outlet
water temperature (°C only)**
4. LED indicator
- ON
- Status OK
- Battery
- Alarm
5. LED display: Treturn - return water
(recirculation) temperature (°C only)**
6. Mixing valve open/close LED
7. Thermal shock button
8. Navigation buttons
- Menu
- OK
- UP
- DOWN
9. RS 485 front connection
Cut the wires of the auxiliary microswitch (if not used) and insulate electrically before
wiring (colors: white, green and red).
11
*Tmixed and Treturn is displayed, default °F. Can be changed to °C in settings (Cels.-Fahr.)
**can be turned off in settings (LED Display).
Page 12
Indication description
Indications on LED display
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.
Hour and minutes display
(24 hour system)
Sensor temperature
display (in ºC)
Resolution 1 ºC
Sensor warning display
“out of range” at top.
(blinking)
Sensor warning display
“out of range” at bottom.
(blinking)
Sensor warning display
“open”. (blinking)
Sensor warning display
“short circuit”. (blinking)
The default setting for the temperatures
is OFF. Go to SETTINGS, LED DISPLAY to
turn them on. Also, if the recirculation sensor
has been set as “not present” in SETTINGS,
or is faulty in program 0, the related display
remains OFF. Temperatures are in ºC only,
and can not be changed to ºF.
12
Electric power supply LED:
red LED: steadily ON when
voltage is present.
Mixing valve LED:
-red LED: on when opening
hot water.
-blue LED: on when opening
cold water.
Controller OK status LED: green
LED: steady ON when there are
no faults or active alarms.
Faulty battery LED:
red LED: on steady there is a
battery fault; otherwise it is Off.
Generic Alarm LED:
red LED: steadily ON when there
is an alarm (sensor fault, thermal
shock in progress, reset).
Return C
LED indicators
The following LED indicators are located on the front
of the controller:
Ok
Return C
Ok
Return C
Ok
Return C
LCD indicators
Green backlit alphanumeric displays with 4 rows of
20 characters each, for setting parameters, scheduling operations, displaying error messages and machine status are on the front of the controller. Buttons
on the front panel (“MENU”, “UP”. “DOWN”, and
“OK”) can be used to scroll through the menu items
to configure the controller, set various parameters
and view the temperature log.
1 /02/2017
T
M
127OF TR120OF
ADJUSTMENT
RUNNING
TUESDAY 1 /02/2017
T
M
140OF TR135OF
DISINFECTION
RUNNING
Mixed
Outlet (°C)
Return
(Recirc) (°C)
Time
(24 hr clock)
Page 13
13
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. Accordingly, a
distinction is made between the following:
• Active with alarm
• Inactive with alarm
The LEGIOMIX® is equipped with a rechargeable battery that keeps the clock working and
maintains selected programmed settings during loss of power. In the event of blackout, to
ensure the longest battery life, the controller assumes the status:
• Inactive on Low Power
Adjustment (modulation)- default mode
LEGIOMIX® measures the temperature of the mixed water at the valve outlet with temperature
sensor and adjusts (modulates) the mixing valve position to maintain the desired set temperature.
Disinfection
LEGIOMIX® runs the disinfection phase, which consists of raising the water temperature to a
pre-set value for a specific time duration, by operating the mixing valve as required.
Using the menu, set the days of the week for the disinfection phase to run.
At the end of disinfection, statistical data relating to the just concluded disinfection are logged.
This mode begins and ends automatically at a start time (Time ON) and end time (Time OFF)
that can be selected by the user in SETTINGS.
Safety measures must be in place before engaging disinfection mode. Anti-scald
protection devices, certied to ASSE 1016 or ASSE 1070, at all downstream xtures,
must be installed.
n
w
,
t
1
t
2
tDIS= Σts> tMIN
Time ON Time OF F
SET2 - P RG 1A
SET3 - P RG 1B or 2
C HE C K O N D IS INFE CT ION
Te mperature
Time
CONFIRMING DISINFECTION
NOTE: Graph is for reference only, not shown on display or logged data.
Page 14
Conrming 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.
Flushing
LEGIOMIX® automatically enters this mode at the end of the disinfection phase, and is used to make
the water temperature return to the adjustment value (SET1 value) quicker, or to periodically clear (or
flush) the storage of impurities. This phase is ended after a time selected with the tFLUX parameter.
When flushing time has ended, relay 1, relay 4, and the controller returns to the “adjustment” mode.
Thermal shock
LEGIOMIX® adjusts the mixed outlet water temperature at the set shock value (SETSH) for a selected
time duration (tSH). The Shock button on the front of the controller can be used then to initiate
thermal disinfection, the manual mode. This function is associated with activation of alarm 4 (AL4),
and illumination of the alarm LED. Thermal shock can be started by pressing the specific button on
the front panel (press and hold for at least 5 seconds) while the operating screen is displayed, or to
program it with the menu item for a delayed execution (countdown in minutes), or by remote control.
Thermal shock operation can be stopped, if needed, by pressing the shock button and
confirming with the “OK” button, or by remote control.
This is a potentially dangerous function so a jumper is provided on the printed circuit board to enable
it. If the jumper is closed, the Shock function can be used; if it is open, it is not available (see Back
Panel section).
At the end of the Thermal shock phase, the controller reverts to the “adjustment” (modulating) mode.
Low power
LEGIOMIX® goes into low power mode with loss of power, and continues to run the internal date
clock. NOTE: in this condition there is no power for switching relays, so the controller does not
perform the adjustment or disinfection functions, sensor temperatures can not be acquired, and no
communication functionality is available. The mixing valve remains in the last state when power went
out. LCD and LED displays are off, all LEDs are off, except the “alarm” LED, which will be flashing.
When the power comes back on, the blackout is recorded in the log (alarm AL5) and the controller
returns to operating mode as programmed, unless the power failure lasts long enough to completely
run down the battery. In this case, LEGIOMIX® will be reset to default values when the power is
restored.
In the event of a reset or extended power failure, factory settings are restored. If modifying the factory
settings, make a copy of the new settings.
ANTI-CLOG function
The LEGIOMIX® controller is configured to execute a daily ball rotation cycle, to ensure efficient
ball operation and cleaning. This occurs after the disinfection program concludes, if active, or in
any case after 24 hours has elapsed when disinfection is not active. The ANTI-CLOG function can
be deactivated through the ANTI-CLOG step in the “SETTINGS” menu by entering the release code
5566 and confirming with ON-OFF. Eliminating this function increases the risk of deposits forming on
the moving parts of the valve.
If it is necessary to also eliminate the disinfection function, proceed in the following order: 1. eliminate
the ANTI-CLOG function, then 2. eliminate the disinfection function.
14
Page 15
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.
• Relay 1: Circulation pump (active during disinfection) Connect Relay 1 in parallel to
time clock or aquastat contacts (whatever switch is controlling recirculation pump).
• Relay 2: Generic alarm (sensor fault, battery fault, blackout or clock failure).
• Relay 3: Second thermostat. Wire in parallel to High Temperature thermostat. Use to
increase hot water supply temperature for thermal disinfection.
• Relay 4: flushing valves
Summary of actuation relay status
Operating Status Adjustment Disinfection Flushing Thermal shock
Relay Contact status Contact status Contact status Contact status
Relay 1: recirc pump Open Closed Closed Closed
Relay 2: generic alarm Open Open Open Closed
Relay 3: second thermostat Open Cloase Open Closed
Relay 4: flush valves Open Open Closed Open
15
Recirculation pump
Relay 1
Storage primary pump
Relay 3
140°F
160°F
Wiring diagram of relay 1 with a clock for
managing the recirculation pump times.
Wiring diagram of relay 3 for connecting the
second thermostat on hot water storage.
Page 16
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. Disinfection will run only when the Program Day (ProgDay) parameter has days
selected (default is no days) and the TimeOn and TimeOff parameters are filled in (default is 00:00 for
both). The return water temperature sensor is not used, but if present, it is used as a monitor only.
During the disinfection phase, the mixed outlet water temperature must remain above SET2 for a time
tDIS at least equal to tMIN, and if this occurs then disinfection has been successful. When this happens,
disinfection then stops. If disinfection is not successful, there is no alarm signal. If alarm indication for
unsuccessful disinfection is desired, use other programs.
Program 1A
Features continuous mixed outlet water temperature modulation with automatic disinfection in a time
band that can be set. Disinfection will run only when the Program Day (ProgDay) parameter has days
selected (default is no days) and the TimeOn and TimeOff parameters are filled in (default is 00:00 for
both). The return water temperature sensor is not used, but if present, it is used as a monitor only.
During the disinfection phase, the mixed outlet water temperature must remain above SET2 for a time
tDIS at least equal to tMIN, and if this occurs then disinfection has been successful. When this happens,
disinfection then stops. If the disinfection temperature is not reached or it cannot be maintained for a
sufficient period of time, the alarm for unsuccessful disinfection is generated. The alarm is recorded in
the log. The first time a button is pressed, the relay opens again. The other alarm indications are cleared
at the next successful disinfection.
Program 1B
This program can only be set if the return water temperature sensor is set at present. Identical to
the previous program (1A), the only difference is the successful outcome of the disinfection phase is
checked via the return water temperature sensor in relation to SET3 instead of via the mixed outlet
water temperature sensor in relation to SET2. As soon as conditions indicate successful disinfection,
disinfection then stops. If the disinfection temperature is not reached or it cannot be maintained fora
sufficient period of time, the alarm for unsuccessful disinfection is generated. The alarm is recorded in
the log. The first time a button is pressed, the relay opens again. The other alarm indications are cleared
at the next successful disinfection.
Program 2 (factory settings - default)
This program can only be set if the return water temperature sensor is used. By default, the disinfection
is not enabled (no days are selected). If days are selected during commissioning, it is identical to the
previous program (1B). The only difference is, if the return water temperature does not reach SET3
after a wait period (tWAIT) since the start of disinfection, the mixed outlet water temperature SET2 is
increased by a value equal to (SET3 - TR reached), considering that SET2 can not in any case exceed
the limit of SETMAX. This correction procedure (increasing only) of the disinfection SET is iterative: if
necessary, it is repeated in the time span defined by the TimeOn and TimeOff at each time interval
equal to tWAIT. As soon as conditions indicate successful disinfection, disinfection then stops. If the
disinfection temperature is not reached or it cannot be maintained for a sufficient period of time, the
alarm for unsuccessful disinfection is generated. The alarm is recorded in the log. The first time a
button is pressed, the relay opens again. The other alarm indications are cleared at the next successful
disinfection.
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Page 17
Interupting disinfection
Disinfection can be interupted while it is still in progress. On the working screen (showing the
message “disinfection in progress”), press the OK button once. The display shows the message “Cancel
disinfection?”; and at this point, the OK button can be pressed to stop the disinfection phase and return
to the adjustment function (without going through the flush phase). If the OK button is not pressed, after
a timeout of about 3 seconds, the display goes back to displaying the message “disinfection running”.
Table of thermal disinfection programs
Program # > 0 1A 1B 1B 2
type of
conrmation
Adjustment and
simple disinfection
without confirming
Adjustment
and disinfection
confirming on the
mixed outlet water
temperature
Adjustment and
disinfection check on
return temperature
to the central heating
system
Continuous
disinfection
(max. 4 hours)
Adjustment
only (default).
If scheduled,
disinfection
confirming.
Use of return
sensor
NO NO YES YES YES
Return sensor
shown on LED
display
As monitor only As monitor only YES YES YES
Adjustment
temperature
Flow*: (SET1)
68 - 185º F
Flow*: (SET1)
68 - 185º F
Flow*: (SET1)
68 - 185º F
--
Flow*: (SET1)
68 - 1850º F
Disinfection
temperature
Flow*: (SET2)
104 - 185º F
Flow*: (SET2)
104 - 185º F
Recirculation: (SET3)
104 - 185º F
Recirculation:
(SET3)
104 - 185º F
- 24 hours
Recirculation: (SET3)
104 - 1850º F - with
adjustment of flow*
up to the max value
Alarm if
disinfection
unsuccessful
NONE YES YES YES YES
Recording in log
if disinfection
unsuccessful
NONE YES YES YES YES
*mixed outlet water temperature
17
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. Thermal disinfection is recommended to be run
every day and at least once per week.
Safety measures must be in place before engaging disinfection mode. Anti-scald protection
devices, certied to ASSE 1016 or ASSE 1070, at all downstream xtures, must be installed.
Page 18
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.
Functions of the conguration buttons
Description Display Button function Effect
Menu item - arrows beside
the row
“UP” , “DOWN”
Moves the cursor to another
row
+OK Opens the related submenue
Menu Go back to previous level
Other rows available
-arrows in the screen margin
“UP” , “DOWN”
Displays other rows in the
menu
Parameter selection
-cursor flashing
“UP” , “DOWN”
Increases or descreases the
parameter value
+OK
Confirms the setting - cursor
disappears and the value
becomes actual
Menu
Return to previous level
without making changes
Whatever status the controller is in (except Low Power), navigation around the various menus to read
the various settings and view the stored log data is always possible. However, for safety purposes, the
settings data can be modied only when the controller is in “Adjustment” mode. In particular,
parameters can not be modified while the controller is in “disinfection”, “flux” or “thermal shock” mode,
and when the controller is in the “inactive with alarm” status. The various options are made availalble,
depending on whether the return water temperature sensor has been enabled. To set programs 1B or
2, the return water temperature sensor must be set as Present. To be able to remove the return water
temperature sensor (i.e. set it as Present of Absent), program 0 or 1A must be set first.
Remote control
The controller can be controlled from a remote computer with the RS485 serial output connection, which
can be accessed by hard-wired terminals and through the connector on the front panel. Since the interface
is the multipoint bus type it is necessary for each controller connected on the bus to be identified by
an appropriate address to avoid identification conflicts. For a detailed description of the operations and
controls that are available from a remote location using this interface, refer to the relevant documentation.
Contact Caleffi for list of registers (points) for mapping LEGIOMIX® information to ModBus. Configuation,
mapping, hardware (routers, modem, etc.), and software are customer/user responsibility. Code NA10520
Modbus-to-BACnet gateway is available separately for translating ModBus to BACnet.
18
Page 19
Operating parameters
The operating parameters can be set in the appropriate menus, and are summarized below:
Summary of parameters. Setting ranges and factory (default) conguration.
Parameter Description Setting Range
Factory (default)
conguration
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 DD/MM/YY 01/01/2005
Time change Daylight saving time setting
USA
CUS.
NO
EUR
USA
19
Parameter Description Setting Range
Factory (default)
conguration
LEGIOMIX “BUS iID”
Number that identifies this appliance (device) among
those connected to the BUS.
0 to 255 001
SET_MAX
Sets the max temperature limit: to protect the system.
None of the SET values can exceed SET MAX.
122 - 194°F
50 - 90°C
149°F
SET1
Setpoint for Ta (mixed outlet temperature) during
adjustment phase.
68 - 185°F
20 - 85°C
113°F
SET2
Setpoint for Ta (mixed outlet temperature) during
disinfection phase.
104 - 185°F
40 - 85°C
140°F
SET3
Setpoint for Ta (return temperature) during disinfection
phase, for programs 1B or 2.
104 - 185°F
40 - 85°C
135°F
Return sensor present
(Rec probe)
The return sensor is analog (NTC).
NO=absent
YES=present
YES
PGM program
To modify the working parameters for the disinfection
phase.
PRGM 0=0
PRGM 1A=1A
PRGM=1B=2B
PRGM 2=2
2
ProgDay
Disinfection is conducted on the selected days. Day
1 is Monday.
1 2 3 4 5 6 7 or
BLANK for each
digit to disable
disinfection
No days selected
TIME ON Start time for the programmed disinfection.
HHMM
0000-2359
0200
TIME OFF End time for the programmed disinfection.
HHMM
0000-2359
0300
tWAIT
Represents the time considered necessary for the
system to bring the return water to a temperature
above SET3.
1 to 255 min 002 min
tMIN
The minimum time for the temperature measured by
the mixed outlet water temperature sensor (program
1A) or the return water temperature sensor (programs
1B or 2) must remain above the disinfection setpoint
so that disinfection will be completed successfully.
0 to 254 min (max
4 hour 14 min)
030 min
tFLUX
Duration of the flushing phase that will start automatically when a disinfection phase is completed.
from 0 to 2550
sec in 10 sec
steps
000 sec
Settings
Page 20
Parameter Description Setting Range Factory (default)
conguration
SETSH
Setpoint for Ta (mixed outlet water temperature) during
shock phase.
86 - 185°F
30 - 85°C
140°F
tSH
Duration of thermal shock phase to be started manually by the user
1 to 4320 min 005 min
Countdown Countdown before activating thermal shock 0 to 999 min 0001 min
Activate countdown Enables activation of countdown before thermal shock
NO= not active
YES= active
NONE
Parameter Description Setting Range
Factory (default)
conguration
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. (This is NOT motor stroke
time)
from 8 to 320 sec
in 2 sec steps
100 sec
ANTI-CLOG
Ball rotation cycle to clean deposit formation for
efficient operation. To deactivate enter release code
5566 and confirm with ON-OFF.
ON
OFF
ON
LED DISPLAY Temperature display on LED display.
ON
OFF
OFF
Cels.-Fahr. Temperature units display on LCD display.
°F
°C
°F
Thermal shock
Temperature History
Temperat. History, read only. See Log section, next.
20
Page 21
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. The disinfection data are saved when disinfection ends. The log (via specific menu item)
can be viewed on the display or remotely via the RS485 serial interface.
The parameters saved in the log are:
-Date (day, month, year)
-Set program. This is saved when disinfection starts.
-tDIS: actual disinfection time (in steps of minutes).
When the set program is 0 or 1A, this parameter is the time when the temperature of the mixed outlet
water was above SET2.
When the set program is 1B or 2, this parameter is the time when the temperature of the return water
was above SET3.
This is helpful when it is less than tMIN, to understand how much greater the span of TIME ON: TIME
OFF should be to complete the disinfection.
-TRMAX: Max. temperature of the return water sensor during disinfection (if a disinfection was completed
that day).
-TRMIN: Min. temperature of the return water sensor duriong disinfection (if a disinfection was completed that day). It is calculated from the time when the return water sensor measured a value greater
than SET3, beginning from the time when the disinfection starts being effective.
-ALARMS AL1, AL2, AL3, AL4, AL5, AL6, AL7 if they were activated on the day in question.
-24 hourly average values of the mixed outlet water temperature.
-24 hourly average values of the return water temperature.
If no disinfection was completed on that day, then the related fields will contain a default value.
If there have been any faults in one or both sensors, the hourly average data will be represented by
dashes. If there are any gaps or unavailable data due to a change of date, time, etc., the cells will
contain a default value and will be represented on the display by dashes.
21
Keyboard Lock (Access PIN code)
Menu navigation can be prevented by enabling the keypad lock function. The keypad is
then unlocked by entering a PIN code. If the lock function is enabled, the keypad is locked
automatically after a timeout of 10 minutes starting from the last button press. When the
keypad lock function is active, a padlock symbol appears on the LCD working screen (on the right).
Also, if the lock function is active and a button is pressed while the working screen is displayed, the PIN
code input screen appears: The code is entered by selecting the first digit using the “UP” and “DOWN”
buttons, then confirming by pressing OK. The second digit is entered in the same way, etc.
When the last digit is confirmed, if the code is correct, the user can access the menus; if the code is
incorrect, the PIN entry screen appears again. If the timeout elapses, the display shows the working
screen again.
If the PIN code is lost or misplaced, the lock function can be overridden (the PIN code is
forced to 0000) by pressing a button on the back of the panel (for 5 sec), or by sending a
special command through the RS485 interface.
CONFIRM NO
PIN 0000
Buttons Lock
CONFIRM NO
PIN 2600
Buttons Lock
Tuesday 12 /06/201 6
TM127OF TR120OF
ADJUSTMENT
RUNNING
Page 22
Deleting the Log
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.
Now press and hold the Shock button for at least 1 second.
The display shows a blank screen, which is then gradually filled, indicating that the delete operation is
in progress; the LCD display then shows the menu selection screen (higher level), and the log has been
completely erased.
If you now go into the log submenu, the only record available will be the one for the present day; note
that the temperatures for all hours previous to the present one have also been deleted.
IMPORTANT: once initiated, the delete operation cannot be cancelled.
Battery
The controller has an integrated rechargeable battery (three 140 mAh cells), used to keep the internal
clock running and maintain the selected settings even if there is a power failure. While in operation,
the battery level of charge is checked periodically (about avery 24 h ours), and the recharge function is
activated if neeeded. When the battery recharge function is active, the “Btr” icon appears in the working
window (in the adjustment mode).
Battery charging Battery fault
If the parameter readings are not within the specified range, the battery is damaged and must be
replaced. If a battery fault is detected, the corresponding alarm appears (see the Alarms section):
In principle, a battery fault should not affect any of the controller functions, unless there is also a power
supply failure.
Battery replacment
When necessary, replace the battery by removing the depleted battery from its seat and inserting the
new battery per the correct polarity placement, shown in the figure.
HISTO RIC 06/04/2005
tDIS 060’ PGRM 1A
TR MAX 130 ° TR MIN 120 °
ALARM -- -4 5-7-
HISTO RIC 06/04/2005
HISTORIC 06/04/2005
H 07
08 09 10 11 12
TA 120 120 120 122 119 123
TR 116 116 116 116 118 117
H 01 02 03 04 05 06
TA --- --- --- --- --- ---
TR --- --- --- --- --- ---
Tuesday 12 /06/201 6 Tuesday 12 /06/201 6
TM127OF TR120OF
ADJUSTMENT
RUNNING
T
M
127OF TR120OF
BATTERY
ALARM
22
–
+
Page 23
L e ve l 1 L e ve l 2 L e ve l 3 B u tt on f u nc t io ns
L A N G U A G E S E L L A N G U A G E S E L
I - E - F - D - E S - P - NL - UP D OWN + OK
S L - HR - S R - R O
D AT E /T I ME D AT E /T I M E
DAT E 01-01 - 2005 S e t: da y/ mon th/ yea r UP D OWN + OK
T IM E 00:00 S et: ti me UP D OWN + OK
T IM E AD J US T ME NT USA USA - CUS. - NO - EUR UP D OWN + OK
S E T T I N G S E T T I N G
B us ID 00 1 f rom 0 to 255 UP D OWN + OK
S E T MA X 50 °C to 9 0° C U P DOWN + OK
S E T1 2 0° C to 85 °C U P DO WN + OK
S E T2 40 °C to 85 °C U P DOWN + OK
S E T3 UP D OWN + OK
R ec pro be YES NO - YE S UP DO WN + O K
P R GM 2 0 - 1A - 1 B - 2 UP D OWN + OK
P rog .day
_ _ _ _ _ _ _
S el ec t da y(s) 1 2 3 4 5 6 7 OK
T ime ON 02:0 0 S e t ti me UP DO WN + OK
T ime OF F 03 :0 0 S e t tim e UP DO WN + OK
tW AIT 002’ 1 t o 25 5 mi nut es UP DOWN + OK
tM IN 0 30‘ 0 to 25 4 mi nute s U P DOWN + OK
tF LUX 0 0 00‘ f rom 0 to 2 55 0 se c onds UP D OWN + OK
tP L AY 005‘ fr om 1 to 2 55 s e co nds UP DO WN + OK
tM OT OR 1 0 0‘ 8 to 3 20 s ec on ds UP DOWN + OK
AN TIC L OG
ON O N - OF F (s ee in str uct. pa ge 14) U P DOWN + OK
T H E R M A L S H OC K T H E R M A L S H O C K
S E TS H UP D OWN + OK
tS H 00 5’ fr om 1 to 43 20 m inu te s UP DO WN + OK
C OU NT DO WN 001 ’ 0 to 99 9 minu te s UP DO WN + O K
AC T IVAT E c ou ntd own NO NO - Y E S UP D OWN + OK
HISTORIC . V IE W T E M P E R AT U R E
T E M P E R AT U R E
DD /M M/ YY UP-DOWN
L OG DD /M M/ YY (Example)
UP D OWN + OK
tD IS 060’
P R GM 2
T R M AX
T R M IN
AL AR M 12345 6 7
h 01
02 0 3 02 4
TA 105 110 95 115
T R 100 105 90 110
K E Y P A D L OC K K E Y P A D L OC K
P IN 0 000 S el ec t cod e UP D OWN + OK
E NA B LE NO NO - YE S UP D OWN + OK
149°F
113°F
140°F
135°F
122°F to 194°F /
68°F to 185°F /
104°F to 185°F /
40 °C to 85 °C
104°F to 185°F /
140°F
30 °C to 85 °C
85°F to 185°F /
136°F
120°F
Conrm 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. Use the “setting” menu to select language any time.
Menu structure table
23
Page 24
Type of ala rm Pro gram Indic ation by ala rm L E D Indic ation by L E D d ispla y Dis play on L CD R ec ording in log
AL 1: flow probe
fa ulty
0 1A 1B 2 G eneric alarm L ED c omes
On and Status OK LE D goe s
Off.
Alarm shown on LED dis play.
(“H I, “LO ”, “S H”, “OP”
dep ending on cas e).
“Flow probe fa ult” a larm
displaye d on LC D.
YE S (AL1 ) S tored in the da y
log.
R etur n pro be fa ult
0 1A The alarm LE D re mains Off
and the “Status O K” LE D
remains On.
R emains Off if program 0,
and “HI, “LO ”, “SH”, “OP ”
displaye d (d epending on
ca se) if progra m is 1A.
NO NE Fa ult is rec orded in the day
log.
AL 2: retur n pro be
fa ult
1B 2 G eneric alarm LE D c omes
On and Status OK LE D goe s
Off.
Alarm shown on LED dis play.
(“H I, “LO ”, “S H”, “OP”
dep ending on cas e).
“R eturn probe fa ult” a larm on
LC D (sc reen a lternates with
working s cree n).
YE S (AL2 ) S tored in the da y
log.
Dis infe ction not
c omple ted
0 The alarm L ED remains Off
and the “Status O K” LE D
remains On.
NO NE N ONE N ONE
AL 3: disinfe ction
not co mplete d
1A 1B 2 “ Generic alarm” LED comes
On and “Status OK ” LE D
goes O ff.
NO NE “ Disinfection incomplete”
alarm on LC D (sc reen
alternates with the working
sc reen).
YE S (AL3 ) S tored in the da y
log.
AL 4: therm al
s hoc k in progre ss
0 1A 1B 2 G eneric alarm c omes On
(but, if no other fa ults, the
Status OK L ED also remains
On).
NO NE “ Thermal s hock in progres s”
alarm on the L CD disp lay .
YE S (AL4 ) S tored in the da y
log.
AL 5: blac kou t
(ma ins pow er
fa ilure)
0 1A 1B 2 The indicator L ED s re main
Off. Only the ge neric alarm
flashes .
Temp erature indic ators a nd
cloc k rema in Off.
Temp eratures are not
ac quired.
LC D remains Off. Rec ording of log data is
sus pende d.
YE S (AL5 ) When power is
res tored it is s tored in the log.
AL 6: applia nce
res et
0 1A 1B 2 G eneric alarm L ED c omes
On and “OK status” LE D O ff.
Time display 0 0 : 00 blinking.
Time on the L CD.
Entering s cree n displayed
Date a nd just s et
Dis playing of 01/01/2005 in
the L CD date field.
YE S (AL6 ) S tored in the da y
log.
AL 7: batte ry
da mage d
0 1A 1B 2 “OK s tatus ” LED goes Off.
“B TR FAIL ” L ED comes O n.
(The generic alarm LED is
not lit).
NO NE “ Battery d amage d” a ppears
on L CD d is play ( alterna ting
with the working sc ree n).
YE S (AL7 ) S tored in the da y
log.
Operability after alarm (page 1)
24
Page 25
R ela y s tatus Ope rating s tatus
R elay 2 clos ed (if no alarms,
the rela y is normally ope n).
In s afe mode. Mixing va lve closes , i.e. only cold water enters.
Adjus tment or disinfection or thermal s hock is canc elled.
All a larm indications are cleare d when the c ause of the alarm ha s b een removed.
R elay 2 open.
The alarm relay d oes not
cha nge s tatus.
All func tions are ensured.
The return probe, if pre sent, is use d as a monitor only, since it d oes not genera te an a larm if faulty.
R elay 2 clos ed.
(if no alarms, the relay is
normally open).
No disinfection, but a djustment continues and thermal s hock is p os sible.
When the first button is press ed, the relay re-ope ns; indic ation remains on the display.
In a ll ca ses , a ll alarm indic ations a re c leared when the ca use of the a larm has been removed.
R elay 2 open.
The alarm relay d oes not
cha nge s tatus.
Dis infec tion failure does not gene rate a ny alarms.
R elay 2 clos ed.
(if no alarms, the relay is
normally open).
When the first button is press ed, the relay re-ope ns; indic ation remains on the display.
In a ll ca ses , a ll alarm indic ations a re c leared when the ca use of the a larm has been removed, in this cas e when the next dis infec tion
is suc ces sfully c ompleted.
Note: if progra m 0 is set, a ny unres olved alarm indic ation due to inc omplete dis infec tion is c lea red.
R elay 2 clos ed.
(if no alarms, the relay is
normally open).
Alarms ge nera ted. The thermal s hock func tion is p otentially da ngerous for use rs of the sys tem.
When the first button is press ed, the relay re-ope ns; indic ation remains on the display.
In a ll ca ses , a ll alarm indic ations a re c leared when the ca use of the a larm has been removed, in in this ca se when the shock function
has ende d and the a ppliance b egins adjustment a gain.
R elay 2 clos ed.
(if no alarms, the relay is
normally open).
If there is a mains power failure, the ba ck-up battery ke eps the applianc e’s interna l clock running.
In this situation, a ll ac tuations are inhibited (the relays ca nnot b e opera ted ), a nd therefore all the a djustment, dis infec tion and therma l
shoc k prog rams. In this status, the a ppliance goes into Low Power mode in orde r to ens ure max imum a utonomy.
The RS 485 interfac e is not ava ilable.
When power is res
tored, the black out a larm (AL5) is s tored in the log, and the app lianc e re sumes opera tion as de fined in the
progra ms ; there are no alarm indications.
Howeve r, if the mains power failure lasts long enough for the battery to bec ome d is charge d, there is a genera l res et when power is
res tored.
The printed circ uit board has a button for hard ware res et of the a ppliance. T his button cannot be opera ted from the front pa nel, but
only by opening the door of the applianc e a nd ac ces sing the printed circuit b oard.
If the applianc e is res et ac cidentally, or intentionally by pres sing the s pecial hidd en button, or by interferenc e (lightning, etc.) , the
corre ct time a nd da te settings are lost.
Settings
made by the user are a lso los t, and the fac tory values a re reloaded for all parameters and se ttings.
There fore, until the c orrect d ate and time are re-entered:
Appliance remains active in adjustment mode.
Dis infec tion is inhibited.
Therma l shock p rogra m is inhibited (but thermal s hock can still be forced manually or remotely).
When the current da te and time have bee n se t ( manually or remotely), the dev
ice come s out of the alarm c ondition a nd res umes
normal op eration. All alarm indic ations a re c leared.
R elay 2 open.
The alarm relay d oes not
cha nge s tatus.
While in operation, the leve l of charge in the battery is chec ked periodica lly (about every 24 h) , and the rec harge function is
ac tivated if nec ess ary. If the p arameter readings are not within the spec ified range , it mea ns the battery is dama ged and mus t be
replace d.
Howeve r, the app lianc e c ontinues performing the sp ecified programs , s ince a battery fa ult doe s not a ffec t any of the applianc e
functions
(unles s there is a blac kout).
NO TE: for the battery replace ment operation refer to the proc edure des cribed on pa ge 20 .
Operability after alarm (page 2)
No relay action.
25
Page 26
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.
The mixing valve body indicates with arrows, hot water inlet- red, cold water inlet - blue.
∞
∞
∞
∞
∞
∞
Check valve
In systems with mixing valves, check valves should be installed to prevent backflows, as is shown in
the application diagrams. Check valves, code NA10366 (for 1” and 1¼” LEGIOMIX®) and NA10367 (for
1½” and 2” LEGIOMIX
®)
may be used.
Commissioning
Due to the special purpose for electronic mixing valves, commissioning in accordance with current
regulations and by qualified personnel using suitable instruments is required. Check that the hot and
cold water supply pressures are within operating limits of the mixing valve, see technical specifications.
Check the temperature of the hot water coming from storage, greater than or equal to 140°F (60°C).
Record all parameters settings and measurements taken in the installation log book.
Maintenance
During service, regularly monitor the performance of the LEGIOMIX® electronic mixing valve since any
loss of performance may indicate maintenance is needed for the valve or the system. If the temperature
of the mixed water is found the have changed significantly compared to previous recordings, refer to
installation and commissioning sections. The following check points are recommended periodically, at
least every 12 months or more frequently, to ensure that the valve continues to deliver optimum levels
of performance:
1) Check and clean the filters installed in the system.
2) Check that any check valve installed at the inlet of the LEGIOMIX® electronic mixing valve is functioning
correctly, and there are no leaks caused by dirt.
3) The internal components of the valve can be descaled by immersing in a suitable descaling fluid.
4) Follow commissioning procedure again after maintainable components have been checked.
5) Record all operations conducted on system log book.
26
Page 27
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.
Tuesday 3/02/2006 Tuesday 3/02/2006 Tuesday 3/02/2006
Tuesday 1 3/02/2006
MIXING PRO BE
ALARM
Recirculation
PRO BE ALARM
Battery PRO BE
ALARM
ALARM
DISINFECTION
INCOMPLETE
Alarm description
Alarm indicator Description
AL1 Mixed outlet water
temperature sensor fault
AL2 Return water temperature
sensor fault
AL3 Disinfection failed
AL4 Thermal shock in progress
AL5 Main power failure
AL6 Controller reset
AL7 Battery default
Depending on the alarm type, certain actions occur,
relay statuses modified and information shown on
the LED display, LCD display and LEDs on the front
panel.
27
Page 28
Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
11-21-17
T1
Non-return valve
Ball valve
Temperature gauge
B
preventer
Pump
Expansion vessel
Thermostat
Safety relief valve
Strainer
Clock
T
T1
T2
T2
°C
0
20
8
0
6
0
4
0
°C
0
2
0
8
0
60
4
0
Application diagrams
THE LEGIOMIX® 6000 SERIES POINT-OF-DISTRIBUTION (ASSE 1017) ELECTRONIC MIXING
VALVE IS INTENDED TO BE BUT ONE COMPONENT IN AN OVERALL RISK MANAGEMENT PLAN
AS DESCRIBED IN ANSI/ASHRAE STANDARD 188 “LEGIONELLOSIS: RISK MANAGEMENT FOR
BUILDING WATER SYSTEMS”. WHEN INSTALLED AND USED AS DESIGNED AND INTENDED,
THE LEGIOMIX® CAN HELP REDUCE BACTERIA IN DOMESTIC HOT WATER RECIRCULATION
SYSTEMS, HOWEVER DUE TO SYSTEM-DEPENDENT VARIABLES, 100% ERADICATION CAN
NOT BE GUARANTEED. CALEFFI IS NOT RESPONSIBLE FOR ANY DAMAGES, CONSEQUENTIAL
OR OTHER, THAT MAY ARISE FROM LEGIONELLA ILLNESS WHEN USING THE LEGIOMIX®
ELECTRONIC MIXING VALVE.
Recirculation not connected to tank
Recirculation connected to tank
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