Vitocal 350-A

Viessmann Light Commercial
Vitocal 350-A
Air-Source Heat Pumps

Vitocal 350-A

Viessmann Vitocal 350‑A – High Temperature Air Source Heat Pump
Powerful air-to-water heat pump for indoor or outdoor installation, delivering 12.7 to 20.6 kW with flow temperatures up to 65°C. Designed specifically for renovation projects, radiator heating systems, and applications requiring high domestic hot water comfort.

Features

Ideal for Modernisation Projects

Designed specifically for retrofit applications Suitable for existing radiator heating systems High flow temperatures minimize the need for system modifications Excellent replacement for conventional boilers

High Flow Temperature Performance

Delivers flow temperatures up to 65°C Maintains high temperatures even at outdoor temperatures down to –10°C Suitable for: Existing radiators Domestic hot water production Hybrid heating systems

Enhanced Vapour Injection (EVI) Technology

Improves performance at low outdoor temperatures Supports higher flow temperatures Enhances year-round efficiency Reliable performance in cold climates

High Domestic Hot Water Comfort

Water temperatures up to 55°C within the DHW cylinder Excellent domestic hot water performance Suitable for families and buildings with higher hot water demand

High Energy Efficiency

COP up to 4.0 (A7/W35) Low operating costs Efficient renewable heating from ambient air Strong seasonal performance

Refrigerant Cycle Diagnostic (RCD) System

Advanced performance monitoring Works together with the electronic expansion valve Continuously optimizes refrigeration circuit operation Maximizes efficiency under varying conditions

Control / Integrations

Vitotronic 200 Controllere

Simple and intuitive operation
Plain-text display
Graphic menu guidance
Fast and accurate system control

Cascade Management

Integrated cascade function
Controls up to five heat pumps
Maximum heating output up to 92.5 kW
Suitable for larger heating demands

Vitoconnect Integration (Accessory)

Internet connectivity
Remote monitoring
Smartphone control
Secure cloud communication

ViCare App

Easy remote control via smartphone or tablet
Monitor heating performance
Adjust temperatures and schedules
Real-time system status updates

ViGuide Service Platform

Remote monitoring for installers
Fast diagnostics and support
Improved service response
Reduced downtime

Vitocom Compatibility

Supports:

Vitocom 100
Vitocom 300
For telecontrol and professional remote monitoring.

Building System Integration

Can be incorporated into complete Viessmann systems
Compatible with:
DHW cylinders
Buffer tanks
Hybrid heating solutions
Renewable energy systems

Technical Documents

Document Name Description Document Type Language Action
Technology Brochure - Heating with Air and Geothermal Energy PDF German Download

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Two-stage air source heat pump for outdoor installation. Nominal heating power: 13.2 – 55.8 kW

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