The Caleffi 600089A is a LEGIOMIX electronic mixing valve with 1-1/2" Sweat connections and rated 34 Cv. It is used for point of distribution temperature control in domestic hot water and hydronic systems.
Best for water heater and storage tank outlets where a single valve sets the distribution temperature for an entire building, zone or riser.
Specifications sourced from Caleffi North America document 01086_NA. Last reviewed August 2026.
Key Features
DZR Low-Lead Brass Body
Dezincification-resistant low-lead brass body, compliant with NSF/ANSI/CAN 372 and certified by ICC-ES under file PMG-1360 for lead content in drinking water system components. Sizes 2-1/2" and 3" use AISI 316 stainless steel balls with galvanized carbon steel slip-on flanges.
Programmable Thermal Disinfection
Scheduled high-temperature disinfection cycles help manage Legionella risk in domestic hot water systems, with logged cycle verification.
Integral RS485 Modbus Communication
The controller carries an RS485 serial output running Modbus RTU, addressable on a multipoint bus for setpoint control, alarm reporting and disinfection cycle logging. BACnet connectivity is not integral; it requires the Caleffi 755052 Modbus-to-BACnet gateway, sold separately. Contact Caleffi for the LEGIOMIX register map.
Technical Specifications
| Connection Size | 1-1/2" |
| Connection Type | Sweat |
| Flow Coefficient (Cv) | 34 |
| Maximum operating pressure | 150 psi |
| Maximum static operating pressure | 230 psi |
| Adjustment temperature range | 70-185 °F |
| Maximum inlet temperature | 212 °F |
| Disinfection temperature range | 100-185 °F |
| Electric supply | 24 V AC |
| Power consumption at full capacity | 6 VA |
| Protection class | IP 54 |
| Series | LEGIOMIX |
| Valve Technology | Electronic |
| Shipping Weight | 21.0 lb |
Documentation
Design Resources
Related Products
- Caleffi 600084A : LEGIOMIX Electronic Mixing Valve 1-1/2" NPT
- Caleffi 600086A : LEGIOMIX Electronic Mixing Valve 1-1/2" Press
- Caleffi 600054A : LEGIOMIX Electronic Mixing Valve 3/4" NPT
- Caleffi 600056A : LEGIOMIX Electronic Mixing Valve 3/4" Press
Frequently Asked Questions
Does Caleffi 600089A support BACnet?
Not directly. Caleffi 600089A provides integral RS485 Modbus RTU communication only. BACnet IP or MS/TP requires the Caleffi 755052 Modbus-to-BACnet gateway, which is ordered separately. Gateway configuration, point mapping, network hardware and software are the responsibility of the installing contractor.
What is the temperature adjustment range of Caleffi 600089A?
The adjustment temperature range is 70-185 °F. Maximum inlet temperature is 212 °F. Confirm the setpoint against the applicable plumbing code for the installation.
What connection does Caleffi 600089A use?
Caleffi 600089A is supplied with 1-1/2" Sweat connections. Other connection styles in the LEGIOMIX family are listed under Related Products.
Does Caleffi 600089A include integral check valves?
No. This model is supplied without integral inlet check valves. Caleffi offers a companion model with a C in the product code for applications that require built-in crossflow protection.
What is the warranty on Caleffi 600089A?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of shipment. ZOT Supply is an authorized Caleffi distributor.
- Product Series:
- LEGIOMIX
- Valve Technology:
- Electronic
- Application:
- Point of Distribution
- Connection Type:
- Sweat
- Connection Size:
- 1-1/2 inch
- Flow Coefficient:
- 34 Cv
- Communication Protocol:
- Modbus RTU (RS485)
- Body Material:
- DZR Low Lead Brass
- Integral Check Valves:
- No
- Temperature Gauge:
- No
- Adjustment Temperature Range:
- 70 - 185 deg F
