IOMM AGR-1
AGR 070A through 100A
59
Interlock wiring
All interlock wiring to field devices (such as flow switches and pump starters) is provided by the
installing contractor. See unit wiring diagrams and field wiring diagram.
Unit set points and calibration
The control software is installed and tested by the factory before shipping. Calibration of the
controller is not necessary. All control and safety set points must be checked by the installing
contractor and adjusted as necessary before starting the unit. Controllers for McQuay chillers have
default set points. Refer to the menu items listed below.
•
Control mode
•
Leaving water temperature
•
Head pressure settings
•
Compressor staging
•
Soft loading
•
Holiday dates
•
Internal scheduling
•
Alarm functions
The default settings are suitable for most installations. The control mode is factory set for “Manual
Unit Off”. Check and set the control and safety settings for the application before starting the unit.
For more information on menu items, see the menu description section.
Modem kit
An optional modem kit allowing remote monitoring of the chiller from an off-site PC running
McQuay Monitor software is available from your local McQuay International sales representative.
The modem kit comes complete with modem, mounting bracket, wiring harness, and installation
instructions. The modem kit can be field installed or as an option at the factory. Modem wiring is
shown on the field wiring diagram.
Optional sensors
Optional sensor kits, available from the factory, can be installed in the field. Thermistors in the
optional sensor kit are the negative coefficient type and have the same characteristics as the entering
and leaving water evaporator sensors.
Field Wiring
Interconnecting wiring for the control panel may consist of the following:
•
115 VAC power wiring
•
Chilled water pump relay
•
Analog input signals
•
Digital input signals
•
Digital output signals
•
Network communications
•
Communications to a personal computer
•
Telephone line for remote modem access
Содержание AGR 070AS
Страница 20: ...20 AGR 070A through 100A IOMM AGR 1 Figure 9 Typical Field Wiring with Global UNT Controller...
Страница 21: ...IOMM AGR 1 AGR 070A through 100A 21 Figure 10 Typical Field Wiring Diagram with MicroTech Controller...
Страница 22: ...22 AGR 070A through 100A IOMM AGR 1 Figure 11 Standard Single Point Connection with FanTrol...
Страница 23: ...IOMM AGR 1 AGR 070A through 100A 23 Figure 12 Standard Single Point Connection with Optional SpeedTrol...
Страница 24: ...24 AGR 070A through 100A IOMM AGR 1 Figure 13 Unit Control Schematic 2 compressor UNT...
Страница 25: ...IOMM AGR 1 AGR 070A through 100A 25 Figure 14 Staging Schematic 2 compressor 4 stage UNT...
Страница 26: ...26 AGR 070A through 100A IOMM AGR 1 Figure 15 Staging Schematic 2 compressor 6 stage UNT...
Страница 27: ...IOMM AGR 1 AGR 070A through 100A 27 Figure 16 MicroTech Controller Schematic...
Страница 28: ...28 AGR 070A through 100A IOMM AGR 1 Figure 17 Unit Control Schematic MicroTech...
Страница 29: ...IOMM AGR 1 AGR 070A through 100A 29 Figure 18 Staging Schematic 4 stage MicroTech...
Страница 30: ...30 AGR 070A through 100A IOMM AGR 1 Figure 19 Staging Schematic 6 stage MicroTech...
Страница 31: ...IOMM AGR 1 AGR 070A through 100A 31 Figure 20 Unit Control Schematic 2 compressor MicroTech...
Страница 32: ...32 AGR 070A through 100A IOMM AGR 1 Figure 21 UNT Instrument Layout See legend on page 34...
Страница 33: ...IOMM AGR 1 AGR 070A through 100A 33 Figure 22 MicroTech Instrument Layout See legend on page 34...
Страница 35: ...IOMM AGR 1 AGR 070A through 100A 35 Figure 25 MicroTech Sensor Layout...
Страница 99: ...IOMM AGR 1 AGR 070A through 100A 99 Notes...
Страница 100: ...Post Office Box 2510 Staunton Virginia 24402 USA 800 432 1342 www mcquay com...
