UK BIGRAC GEN 24 - Flipbook - Page 26
GENERAL INDEX
Solutions for server rooms applications
NON STOP
OPERATION
Effectively protect your IT related spaces, 24/7, with a complete range of solutions
offering redundancy control. High efficiency products provide reliable cooling all
year round.
24/7
365
YKEA server room solution.
PACi solution.
· Perfect solution for smaller server rooms
· Compact design
· Reaching SEER value of 9,6 (A+++) 1)
· High seasonal performance
· Range of capacities available
· Operation down to -25 °C ambient
· Scalability for larger applications
· Twin, triple and double-twin options 1)
· Increased piping lengths of up to 90 m 2)
· Increased sensible capacity options available
· Flexible and adaptable control options
1) Compatible with PAW-PACR4 only. 2) For Big PACi 20 kW unit.
1) For 3,5 kW unit.
Redundancy ensured by three different functionalities.
Computer and server rooms are very sensitive areas of application. Any downtime caused by high room temperatures must
be avoided by any means. Air conditioner redundancy is one of the key points to ensure a reliable nonstop cooling operation.
1
2
3
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Backup operation
When an air conditioner fails for whatever reason,
another one will awake from standby mode and
cover the room’s cooling load.
Support operation
Support operation, also called cascade control,
makes sure that the capacity required to cool the
room is delivered by one or more units whenever
required. When the capacity of 1 air conditioner is
not sufficient, another one will be started to support
the operation.
Rotation operation
Backup and support operation are key functions for
a redundant operation in computer rooms. This
concept implies a main system and a sub system. In
order to avoid an imbalance of the operating hours
of the systems, the redundancy control equalises
the operation time by rotating the main and the sub
systems, thus providing a “rotation operation”.
Power supply error or PCB error
System 1
Operation
Error
System 2
Stand by
Operation
Temperature threshold exceeded (cooling)
Temperature falls below threshold (cooling)
System 1
Operation
Operation
Operation
System 2
Stand by
Operation
Stand by
System 1
Operation
Stand by
Operation
Stand by
Operation
System 2
Stand by
Operation
Stand by
Operation
Stand by
