Technical Data; Operational Limits; Pressure Drop - York YGWH 115 Installation, Commissioning & Operation

9. Technical Data

Operational Limits

YGWH Models
Liquid outlet temperature (water)
Chilled liquid
Flow rate
Maximum working pressure
Liquid outlet temperature
Cooling liquid
Flow rate
Maximum working pressure
Refrigerant System High pressure side
Power supply voltage
System water volume - Air Conditioning
Air temperature surrounding unit
YGWH Models
Liquid outlet temperature (water)
Chilled liquid
Flow rate
Maximum working pressure
Liquid outlet temperature
Cooling liquid
Flow rate
Maximum working pressure
Refrigerant System High pressure side
Power supply voltage
System water volume - Air Conditioning
Air temperature surrounding unit

Pressure Drop

The expected waterside pressure drop at design flow is provided on the particular sales order form header. When
rated in accordance with AHRI-550, the actual pressure drop for clean tubes is permitted to be lower than or 15%
greater than the stated value.
To determine flow or waterside pressure drop at conditions other than sales order design, use the following relationship
to calculate the unknown parameter. Ensure consistent units of measure are used during calculation:
EN
Min.
°C
l/s 9
barg
°C
l/s 11
barg
barg
V
l
°C
Min.
°C
l/s 25
barg
°C
l/s 30
barg
barg
V
l
°C
Design
flow
=
Design pressure
drop
Form 6S6I-B01C-EOMA-EN (0318)
115 145
Max. Min. Max. Min.
2.2 to 21
27 11 32 14
10
18 to 43
33 13 38 16
10
18
380V, 400V, 415V 3Ø, 50Hz (nominal)
401 501
4.4 to 43.3
260 300
Max. Min. Max. Min.
2.2 to 21
75 27 79 40
10
18 to 43
88 33 98 45
10
18
380V, 400V, 415V 3Ø, 50Hz (nominal)
700 829
4.4 to 43.3
Actual
flow
Actual pressure
drop
180 225
Max. Min. Max.
39 18 48
48 20 58
638 799
330 375
Max. Min. Max.
122 40 120
133 50 144
1029 1111
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