17
6 - APPLICATION DATA
6.1 -
Operating limits for 19PV units
19PV
Minimum Maximum
Evaporator
Entering temperature at start-up
°C
-
35
Leaving temperature during operation
°C
3,3
20
Entering/leaving water temperature difference K
3
11,1
Condenser
Entering temperature at start-up
°C
13
(1)
-
Leaving temperature during operation
°C
14
(1)
50
Entering/leaving water temperature difference K
3
11,1
(1) For lower condenser temperatures a water flow control valve must be used at
the condenser (two or three-way valve). Please refer to Control for option 152
to ensure the correct condensing temperature.
Note:
Ambient temperatures: These units are dedicated for indoor environment. The
external temperature at chiller start up should be at least 5°C. For such low
ambient, option 152 is recommended. During storage and transport of the 19PV
units (including by container) the minimum and maximum permissible
temperatures are -20°C and 66 °C.
Evaporator leaving water temperature, °C
Condenser lea
ving w
ater
temper
atur
e, °C
10
20
30
40
50
0
5
10
15
20
6.2 - Minimum chilled water flow
The minimum chilled water flow is shown in the table in chapter 6.7.
If the system flow is less than the minimum unit flow rate, the
evaporator flow can be recirculated, as shown in the diagram.
For minimum chilled water flow rate
1
2
1
Legend
1. Evaporator
2. Recirculation
6.3 - Maximum chilled water flow
The maximum chilled water flow is limited by the permitted pressure
drop in the evaporator. It is provided in the table in chapter 6.6
-
Select the option 100C that will allow a higher maximum water
flow rate (see the option 100C in the table in chapter 6.5).
-
Bypass the evaporator as shown in the diagram to obtain a
lower evaporator flow rate.
For maximum chilled water flow rate
1
2
Legend
1. Evaporator
2. Bypass
6.4 - Condenser water flow rate
The minimum and maximum condenser water flow rates are shown
in the table in chapter 6.6
If the system flow is higher than the maximum unit flow rate, select
the option 102C that will allow a higher maximum water flow rate.
Please refer to option 102C in the table in chapter 6.5.
Содержание 19PV550
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