Products
MULTI-ZONE FAN COIL UNIT CONTROLLER
Rickard ’ s Fan Coil Unit Multi-Zone Controller is more than a traditional FCU controller . The controller can be combined with Rickard ’ s VAV diffusers so that the FCU can handle multiple zones without the need for pressure sensors or dampers .
Since the FCU and diffusers are linked through the tried and tested MLM system , the FCU can regulate the fan speed and hence duct pressure from the diffusers average demand .
The benefits of an FCU Multi-Zone Controller over a traditional
FCU supplying constant volume diffusers are :
• Zones with different loads can be ducted to the same FCU . Individual temperature control and comfortable occupants at every zone .
• Larger FCU ’ s and more diffusers can be used to reduce cost .
• Fan speed matches diffuser demand .
• Never over- or under-condition different zones .
• To conserve energy the controller can power down the fan coil unit if the room is unoccupied / window or door is open .
• Works with VAV diffusers / CAV diffusers .
• Integrates with MLM & the BMS .
• Two and four-pipe fan coil units .
• EC & 3 speed fan control .
• 220V AC – 12V DC power supply .
• PIR , door & window switch override .
• Auto water supply temp detection .
For more information , call + 27 ( 0 ) 21 704 1533 .
AIR-COOLED CHILLERS FOR OUTDOOR INSTALLATION
Sabroe ChillPAC Air , supplied by Johnson Controls , uses ammonia as refrigerant and is a series of air-cooled chillers based on ultra-reliable Sabroe reciprocating compressors with a capacity range between 300 and 1400kW .
The chiller is made in a compact design , which is achieved by having an extra-compact shell-and-plate evaporator , an SMC compressor and double V-coil condensers to reduce the overall footprint . With the lowest possible refrigerant charge and superior efficiency , the chiller provides customers with an attractive , economic and environmentally responsible aircooled chiller product .
ChillPAC Air offers flexible and simple on-site installation for remote or local cooling needs , without any supplementary water-cooling assembly required .
Features :
• Factory-assembled , pre-tested packaged units based on Sabroe reciprocating compressors world-renowned for their reliability
• Outdoor installation in weatherproof enclosure
• Easy to mount , install and connect
• Natural refrigerant R717
• Exceptional COP ( upto 4.53 ) and outstanding part-load performance
Benefits :
• Easy pre-commissioning makes installation and running-in both faster and cheaper
• Cooling capacity can be added without need to build / rebuild a machine room
• Low installation costs and rapid commissioning
• Future-safe refrigerant supporting sustainability and efficiency
• Greater cooling effect from a smaller refrigerant charge , and optimum load structure over the entire capacity range
For more information , call + 27 ( 0 ) 11 921 7154 .
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www . hvacronline . co . za RACA Journal I March 2022 59