CALEFFI LEGIOMIX 6000 series Guida

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

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

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”.

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.

ATTENTION: Lorsque vous effectuez les raccordements d'eau, assurez-

vous 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. Assurez-

vous 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

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

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

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

THURSDAY

TM127

•F TR120 •F

ADJUSTMENT

RUNNING

1) Legiomix digital regulator

2) Mixing valve

3) Mixing valve actuator

4) Mixed water flow probe

5) R eturn probe (rec irculation)

6) Mixed water flow temperature gauge

7) Actuator 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

110 130

150

170

190

210

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

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

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.

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.

OkMenuShock

Mixed °C Return °C

TUESDAY 1 / 02/ 2017

ADJUSTMENT

IN PROGRESS

°C

110 130

150

170

190

210

Relaycontacts

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).

SPL

RUN

ERR

PWR

GND

Rx/-

Tx/+

+PWR

-PWR

FRAMEGND

RELAY 1, 2, 3, 4

Back panel

disable

Reset

Appliancefuse

80 mA-250Vdelayed

Mixingvalve fuse

1A-250 V delayed

RelaycontactsElectric

supply

24 V

Mixing

valve

BatteryconnectedBatterydisconnected

Batteryconnection

Thermalshock

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

Neutral

Live

PINcode

disablingbutton

Resetbutton

Screw to close

the front cover

withhole

forlead-sealingRS485

Interface

terminal

Microswitch

forenabling

thermalshock

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 sen-

sors 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

ºF ºC ΩºF ºC ΩºF ºC ΩºF 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

B attery dis conne

B attery conn ected

ock disabled

factory setting) B a ttery c onnec tion

hoc k

B attery

345

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 functions-

Dipswitch settings

-Thermal Shock enable/disable.

-Internal battery (do this during

installation)

disable

Reset

Appliancefuse

80 mA-250Vdelayed

Mixingvalve fuse

1A-250 V delayed

RelaycontactsElectric

supply

24 V

Mixing

valve

BatteryconnectedBatterydisconnected

Batteryconnection

Thermalshock

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

Neutral

Live

PINcode

disablingbutton

Resetbutton

Screw to close

the front cover

withhole

forlead-sealingRS485

Interface

terminal

Microswitch

forenabling

thermalshock

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 congured to automatically execute a daily rotation cycle to ensure ef-

cient 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 conrming 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.

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

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