Airedale Ultima FreeCool UFC 650 [17/46] Ultima freecool chillers

Airedale Ultima FreeCool UFC 225 [17/46] Ultima freecool chillers
ULTIMA FREECOOL Chillers
Chillers
16
Installation & Maintenance Manual : 903-125 IM E 05/04/A
Installation Data
WATER SYSTEM DATA
When all the pipework has been connected in the system, proceed as follows:
Pressure Testing
Ensure all shut off and control valves are fully open.
Pressurise system to the operating pressure, hold for 1 hour (a gradual fall in
pressure shown on the gauge indicates a leak).
Leaks should be found and repaired and the unit pressure tested for a further hour.
When the pressure remains at the operating pressure for 1 hour, the system can be
considered leak free.
CAUTION
Although a pressure of 1.5 x working pressure is adequate for testing purposes,
most local water authorities require 2 x working pressure.
CAUTION
All free-cooling units should use minimum 20% glycol concentration.
Filling
CAUTION
It is recommended that the whole system be flushed prior to filling to remove
debris left in the water pipework by using a flushing bypass as shown to avoid
serious damage to the tubes in the cooler.
During filling the system should be vented at all high points.
Once the system has been completely vented all vents should be closed.
To prevent air locking in the system it is advisable to fill the systems from the lowest point,
ie drain point on pipework.
Auto air vents are fitted, Airedale strongly recommends an auto pressurisation unit be
fitted to the system.
Model UFC200D-8 UFC225D-8 UFC250D-8 UFC275D-8 UFC300D-8
Connections
Water Inlet / Outlet - Unit (4) DN100 DN100 DN100 DN100 DN100
Water Drain/Bleed - Evap in 1/2 1/2 1/2 1/2 1/2
Water System
Min. System Water Volume (5) l 1454 1577 1750 1915 2074
Max. System Operating Press Bar 10 10 10 10 10
Model UFC350D-10 UFC400D-10 UFC450D-12 UFC500D-12 UFC575D-14
Connections
Water Inlet / Outlet - Unit (4) DN100 DN100 DN125 DN125 DN125
Water Drain/Bleed - Evap in 1/2 1/2 1/2 1/2 1/2
Water System
Min. System Water Volume (5) l 2398 2606 3046 3413 3967
Max. System Operating Press Bar 10 10 10 10 10
Model UFC650D-14 UFC700D-18 UFC750D-18
Connections
Water Inlet / Outlet - Unit (4) DN125 DN150 DN150
Water Drain/Bleed - Evap In 1/2 1/2 1/2
Water System
Min. System Water Volume (5) l 4392 4135 3726
Max. System Operating Press Bar 10 10 10
(4) Flanged to PN16.
(5) For minimum system volume refer to the Technical Manual - Design Features & Information - Minimum Volume
Calculations section.

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