McQuay AWS User Manual

18 KOMAC00607-09EN
Description Default Range
Unit Ft/Lb SI
Clear Ice Timer No No,Yes
SSS Communication No No, Yes
PVM Multi Point Single Point, Multi Point , None(SSS)
Noise Reduction Disabled Disabled, Enabled
Noise Reduction Start Time 21:00 18:00 – 23:59
Noise Reduction End Time 6:00 5:00 – 9:59
Noise Reduction Condenser
Offset
10.0 °F
5 °C
0.0 to 25.0 °F
BAS Protocol None None, BACnet, LonWorks, Modbus
Ident number 1 0-????
Baud Rate 19200 1200,2400,4800,9600,19200
Evap LWT sensor offset 0°F 0°C -5.0 to 5.0°C / -9.0 to 9.0°F
Evap EWT sensor offset 0°F 0°C -5.0 to 5.0°C / -9.0 to 9.0°F
OAT sensor offset 0°F 0°C -5.0 to 5.0°C / -9.0 to 9.0°F
Compressors-Global Ft/Lb SI
Start-start timer 20 min 15-60 minutes
Stop-start timer 5 min 3-20 minutes
Pumpdown Pressure 14,3 PSI 100 kPa 10 to 40 PSI / 70 to 280 kPa
Pumpdown Time Limit 120 sec 0 to 180 sec
Light Load Stg Dn Point 50% 20 to 50%
Load Stg Up Point 50% 50 to 100%
Stage Up Delay 5 min 0 to 60 min
Stage Down Delay 3 min 3 to 30 min
Stage Delay Clear No No, Yes
Max # Comps Running 4 1-4
Sequence # Cir 1 1 1-4
Sequence # Cir 2 1 1-4
Sequence # Cir 3 1 1-4
Number of Pulses 10% to
50%
10 10 to 20
Slide Load Delay Mininum 30 seconds 10 to 60 seconds
Slide Load Delay
Maximum
150 seconds 60 to 300 seconds
Slide Unload Delay
Minimum
10 seconds 5 to 20 seconds
Slide Unload Delay
Maximum
50 seconds 30 to 75 seconds
Liquid Injection Activation 185°F 85°C 75 to 90°C
Liquid Line Solenoid
Valves
No No, Yes
Alarm Limits
Low Evap Pressure-Unload 23.2 PSI 160 kPa See section 0
Low Evap Pressure-Hold 27.5 PSI 190 kPa See section 0
Oil Press Delay 30 sec 10-180 sec
Continued next page.

McQuay AWS Specifications

General

Brand	McQuay
Model	AWS
Category	Chiller
Language	English