ESIE11-02
Functional Description
Part 2 – Functional Description
2–11
3
2
4
5
1
1.8
Head Pressure Control: EUWA*5-24KBZW1 and EUWY*5-24KBZW1
Functional
description
■
The chillers are equipped with a fan control to limit the high pressure based on ambient
temperature.
■
Each circuit (K4A, K5A and K12A) has the same functionality.
Fan management in
cooling mode
The illustration below shows the fan management in cooling mode.
Fan relay
management in
cooling mode
The table below describes the fan relay management in cooling mode.
Fan motor
operation
The operation of the fan motors depends on the ambient temperature. The table below contains the
fan settings for different ambient temperatures.
Selection of fan
setting
Fan setting 1 or Fan setting 2 is selected by dipswitch S2A number 2:
■
OFF = fan setting 1
■
ON = fan setting 2
Fanstep 3
Fanstep 1
Fanstep 2
T1
T2
T3
T4
T
ambient
Fan
relay 1
Fan
relay 2
Fan
relay 3
Result
RY4/RY24
RY5/RY25
RY12
For units with 2 cir-
cuits and fans
Fanstep 1
Open
Closed
Open
M11F:
medium
M12F:
OFF
M21F:
medium
M22F:
OFF
Fanstep 2
Closed
Open
Open
M11F:
high
M12F:
OFF
M21F:
high
M22F:
OFF
Fanstep 3
Closed
Open
Closed
M11F:
high
M12F:
high
M21F:
high
M22F:
high
T
ambient
Fan setting 1 (5HP, 8HP, 16HP)
Fan setting 2 (10HP, 12HP, 20HP, 24HP)
T1
5°C
-4°C
T2
7°C
-2°C
T3
17°C
15°C
T4
19°C
17°C
Содержание EUWY 24KBZW1 Series
Страница 2: ......
Страница 8: ...ESIE11 02 vi Table of Contents 3 1 4 5...
Страница 10: ...Introduction ESIE11 02 viii 3 1 4 5...
Страница 12: ...ESIE11 02 1 2 Part 1 System Outline 3 1 1 5...
Страница 86: ...Wiring Layout ESIE11 02 1 76 Part 1 System Outline...
Страница 88: ...ESIE11 02 2 2 Part 2 Functional Description 3 1 2 5...
Страница 128: ...The Digital Controller ESIE11 02 2 42 Part 2 Functional Description 3 1 2 4 5...
Страница 130: ...ESIE11 02 3 2 Part 3 Troubleshooting 3 1 3 5...
Страница 168: ...ESIE11 02 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Страница 198: ...Test Run and Operation Data ESIE11 02 4 32 Part 4 Commissioning and Test Run 3 1 4 5...
Страница 200: ...ESIE11 02 5 2 Part 5 Maintenance 3 1 5...
Страница 210: ...ESIE11 02 4 Index 3 1 4 5...