Unit installation

28 ACZ 010A through 039A IOMM ACZ1-2
Table 10, Setpoints
Description Default Range PW
Unit
Unit Enable Off Off, On O
Available mode Cool Cool, Test M
Control Source Switches Keypad, Network, Switches O
Air Flow Timer 30 10 to 60 seconds M
Low Ambient Lockout
35.0 °F –2(35) to 70 °F
M
Refrigerant Type None R22, R407c M
BAS Protocol Modbus BACnet, LonWorks, Modbus M
Ident number 001 001-999 M
Baud rate 9600 1200,2400,4800,9600,19200 M
Evaporator Refrig Press Sensor Offset 0 psi -20.0 to 20.0 psi M
Condenser Refrig Press Sensor Offset 0 psi -20.0 to 20.0 psi M
Outside Ambient Temperature Sensor
0 °F -5.0 to 5.0 °F
M
Password 0000 0000 to 9999 N/a
Compressor
Clear Cycle Timers No No, Yes M
Start-Start 15 min 10 to 60 min M
Stop-Start 5 min 3 to 20 min M
Stage Up Delay 240 20 to 480 sec M
Stage Down Delay 30 10 to 60 sec M
Comp 1 Enable Enable Enable, Disable M
Comp 2 Enable Enable Enable, Disable M
Alarms
Low Evap Pressure-Hold [59,60] psi [20, 24] to 65 psi M
Low Evap Pressure-Unload [58,59] psi [20, 24] to 65 psi M
Evap Flow Proof 5 sec 3 to 120 sec M
High Condenser Pressure 380 psi 380 to 390 psi M
High Condenser Stage Down 370 psi 365 to 375 psi M
Phase Voltage Protection N N,Y M
Low OAT Start Timer 165 sec 150 to 240 sec M
Condenser Fans
Fan Stages 2 2,3 M
Speedtrol Option N N,Y M
Stage #1 On (OAT < 75°F)
200 psi 140 to 200 psi M
Stage #2 On 290 psi 230 to 330 psi M
Stage #3 On 300 psi 230 to 330 psi M
Stage #1 Off 140 psi 130 to 170 psi M
Stage #2 Off 180 psi 150 to 200 psi M
Stage #3 Off 190 psi 150 to 200 psi M
Automatic Adjusted Limits
The following are setpoints that will be limited based on the option selected.
Low Ambient Lockout Temperature
Speedtrol Range
Speedtrol = N
35 – 60°F
Speedtrol = Y
-2 – 60°F
Low Evaporator Pressure Hold and Unload
Refrigerant Range
R22 24 to 65 Psig
R407C 20 to 65 Psig