Daikin RXYQ46PAY6 [25/33] Hilton hotel manchester

Daikin RXYQ46PAY6 [25/33] Hilton hotel manchester
46 47
Hilton Hotel Manchester
Manchester, UK
13
PROJECT OUTLINE
RWEYQ10 × 35 FXDQ20/25 × 290
Outside unit Indoor unit
BRC2A51
Others
EQUIPMENT
Location
Application
Number of floors
Project year
HOTEL
Manchester, UK
Hotel
49F
2006
INDOOR UNIT INSTALLATION
PROJECT COMMENTARY
A Daikin water-cooled VRV-WII air conditioning system was selected for this project over a conventional chiller/ LPHW-based 4 pipe fan
coil system. The fan coil system did not meet Part ‘L’ carbon emission requirements and would have required a major redesign of the
building. Also, the VRV-WII system provides the client with the added benefit of an enhanced capital allowance and its attendant savings
in capital outlay.
System control is provided via simplified room controllers interfaced through a LON gateway to the hotel’s ‘Fidelio’ booking system. Three
operating modes are available—‘room not booked/unoccupied’ with a wide band of control between 18 and 28°C; ‘room booked’ with a
band width of 16 to 26°C; and ‘room occupied’ operating at a room controller set point of 22°C. Daikin was awarded the project for several
reasons. These include: the smaller external footprint of the units; lower capital cost than would be required for four pipe fan coils; a high
COP, which means lower running costs; two-stage heat recovery; lower CO
2
emissions; and adaptability to the hotel control system.
This was a typical installation case for application in a hotel bedroom. As this was for residential and individual use,
and not commercial use, higher specifications including good appearance, low sound, comfortable distribution and
easy control were required.
A fresh air intake is located in the
service space.
Returning air intake for indoor unit is located
above closet. Air passes across back wall
and ceiling and reaches the unit. Grill is not
located on ceiling in order to maintain an
attractive appearance and to reduce cost.
BS box is also installed in the
service space. This equipment is
covered with rubber material to
decrease refrigerant flow sound.
Refrigerant detector is installed in
lower corner of wall. When this
sensor catches refrigerant,
operation is stopped automatically.

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