Variable refrigerant flow systems
Outdoor Unit
Indoor Unit
Two Pipe Heat Pump System cooling mode
Outdoor Unit
Indoor Unit
Two Pipe Heat Pump System heating mode
Outdoor Unit
Indoor Unit
Three Pipe Heat Pump System simultaneous cooling and heating
As many options as you’ve got rooms to cool and heat. In buildings with multiple zones that require separate comfort controls, you need options. Johnson Controls Variable Refrigerant Flow (VRF) systems give you the heating and cooling flexibility you need, combined with the reliability and energy efficiency you expect from Johnson Controls. You get the freedom to create comfortable, efficient buildings, without being limited by ductwork runs. Johnson Controls VRF systems offer multiple configurations for both new and existing buildings. Multi-zone temperature control allows the system to handle diverse heating and cooling loads, while giving occupants the ability to adjust temperature to satisfy their individual comfort needs. In addition, variable refrigerant flow heating and cooling uses energy efficiently, because VRF uses only refrigerant without air or water as a heat transfer medium. Johnson Controls VRF is ideal for commercial office buildings subject to diverse loads and varying occupant levels. Also, the VRF system is perfect for schools, hotels, nursing homes and other commercial living spaces where occupants will want either heating or cooling at the same time. In all cases the system runs quietly, for a comfortable, productive environment.
Johnson Controls VRF features include: • Multiple unit connectivity – up to 17 indoor units can be connected to one condensing unit. • Advanced inverter controlled compressor technology - precisely matches the amount of refrigerant being delivered to each zone, providing consistent room temperature regardless of variations in load during the day. • Responsive controls - provide immediate response to changes in zone loads.
Johnson Controls VRF Systems: Outdoor units • Range from 3-12 tons • 208/230 volt — three-phase power supply (mini heat pump: single-phase) • Modular design for increased capacity from compact footprint • Environmentally responsible R-410A refrigerant • Maximum piping lengths up to 984 feet • Up to 40 indoor units can be connected
mini heat pump
heat pump
concurrent heating/cooling
twinned unit
Indoor units • Range from 7,500-48,000 btu • 208/230 volt — single-phase power supply • Ceiling, wall and floor mounted models available • Concealed, semi-concealed and exposed models available
ceiling semi-concealed
ceiling concealed horizontal
wall mount exposed
• Environmentally responsible R-410A refrigerant
Controls • Remote unit controls • Network controls • Network portal that supports BACnet®, LonWorks® and Johnson Controls N2 protocols simplified wired remote
wireless remote
LonWorks® is a registered trademark of Echelon Corporation. BACnet® is a registered trademark of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). Printed on recycled paper. © 2010 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA PUBL-6595 www.johnsoncontrols.com
system controller
intelligent controller