ULTIMA 2000
Chillers
Chillers
Installation & Maintenance Manual : 903-099 IM E 05/00
13
Installation Data
WATER SYSTEM DATA
IM144
Filling
CAUTION
It is recommended that the system be flushed prior to filling to remove debris left
in the water pipework between the strainer and cooler to avoid serious damage to
the tubes in the cooler.
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During filling the system should be vented at all high points.
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Once the system has been completely vented all vents should be closed.
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To prevent air locking in the system it is advisable to fill the systems from the lowest
point, ie drain point on pipework.
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If auto air vents are used then we strongly recommend an auto pressurisation unit be
fitted to the system.
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as TM
Model
USC250…-8
USC275…-8
USC300…-8 USC350…-12 USC400…-12
Connections
Water Inlet / Outlet - Evap
(2)
in
DN 150
DN 150
DN 150
DN 150
DN200
Water Drain/Bleed - Evap
in
1/2
1/2
1/2
1/2
1/2
Water System
Min. System Water Volume
(3)
L
1782
1960
2138
2608
3014
Max. System Test Pressure
Bar
10
10
10
10
10
as TM
Model
USC450…-12 USC500…-12 USC575…-16 USC650…-16
Connections
Water Inlet / Outlet - Evap
(2)
in
DN200
DN200
DN200
DN200
Water Drain/Bleed - Evap
in
1/2
1/2
1/2
1/2
Water System
Min. System Water Volume
(3)
L
3294
3624
4253
4564
Max. System Test Pressure
Bar
10
10
10
10
(2)
Flanged to PN16.
as TM
(3)
For minimum system volume calculations, refer to the
Technical Manual
.
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GLYCOL DATA
Glycol is recommended when a supply water temperature of +5°C or below is required or
when static water can be exposed to freezing temperatures.
as TM
Ethylene Glycol Nominal Correction Factors
Glycol in System /
Freezing Point ºC
10% / -4°C
20% / -9°C
30% / -15°C
40% / -23°C
Cooling Duty
0.98
0.97
0.95
0.93
Input Power
0.99
0.98
0.96
0.95
Water Flow
0.99
0.99
0.99
1.00
Pressure Drop
Multiply by
0.99
0.99
0.99
1.00
Propylene Glycol Nominal Correction Factors
Glycol in System /
Freezing Point ºC
10% / -2°C
20% / -6°C
30% / -12°C
40% / -20°C
Cooling Duty
0.97
0.95
0.91
0.88
Input Power
0.99
0.98
0.96
0.95
Water Flow
0.98
0.97
0.95
0.95
Pressure Drop
Multiply by
0.99
0.99
0.98
0.98
