OMM 1130 23
Table 7, Continued
Description Default Range PW
Expansion Valve Type Electronic Thermal, Electronic M
Circuit 1 EXV Control Auto Auto, Manual M
Circuit 1 EXV Position N/A 0-100% M
Circuit 2 EXV Control Auto Auto, Manual M
Circuit 2 EXV Position N/A 0-100% M
MaxOpPress 156 142 – 170 psig M
SuperheatTarg 10 8-12°F M
Alarms
Low Evap Pressure-Hold M
Low Evap Pressure-Unload
See following section; Automatic Adjusted Limits
M
High Cond Pressure – Unload
Water: 405 psig
Air: 550 psig
Water: 355 – 425 psig
Air: 410- - 555 psig
M
High Cond Pressure – Stop
Water: 420 psig
Air: 565 psig
Water: 375 – 435 psig
Air: 425 – 570 psig
M
Evap. Freeze
38.0 F
37.0 to 42.0 F
Glycol: 17.5 to 42.0F (R134a,R22, R407C)
7.5 to 42.0F (R410A)
M
Cond. Freeze
34.0 F 18 to 42 F
M
High Condenser Pressure Stop
(Water-Cooled = Y
280 psi
420 psi
260 to 380 psi (R22, R407C)
375 TO 435 psi (R410A)
M
High Condenser Pressure Stop
(Water Cooled = N)
380 psi
565 psi
260 to 380 psi (R22, R407C)
425 to 570 psi (R410A)
M
High Condenser Pressure Stop (R134a) 185 psi 170 to 425 psi M
Evap Flow Proof 5 sec. 5 to 15 seconds M
Cond Flow Proof 5 sec. 5 to 15 seconds M
Recirc Timeout 3 min. 1 to 10 minutes M
* Phase Voltage Protection N N,Y M
* Ground Fault Protection N N,Y M
Low OAT Start Time 60 sec. 30 to 240 seconds M
Condenser Fans (Water Cooled = N)
Number of fans 4 4 to 8 (10 for R410a) M
Speedtrol Option No No,Yes M
Stg on Deadband Stg 2 15 °F 15 to 25°F M
Stg on Deadband Stg 3 10°F 10 to 15°F M
Stg on Deadband Stg 4 10°F 10 to 15°F M
Stg Off Deadband Stg 1 20°F 15 to 20°F M
Stg Off Deadband Stg 2 15°F 10 to 15°F M
Stg Off Deadband Stg 3 10°F 6 to 10°F M
Stg Off Deadband Stg 4 10°F 6 to 10°F M
Cond Sat Temp Target 100°F 80 to 120°F M
Forced Fan 1 (>75°F)
Forced Fan 2 (>90°F)
Forced Fan 3 (>105°F)
Cooling Tower (Water Cooled = Y)
Tower Control None None, Temperature M
Tower Stages 2 0 to 2 M
Stage Up Time 2 min 1 to 60 min M
Stage Down Time 5 min 1 to 60 min M
Stage Differential
3.0 F 1.0 to 10.0 F
M
Stage #1 On
70 F 40 to 120 F
M
Stage #2 On
75 F 40 to 120 F
M
Valve/VFD Control None
None, Valve Set point, Valve Stage, VFD
Stage, Valve SP/VFD Stage
M
Valve Setpoint
65 F 60 to 120 F
M
Valve Deadband
2.0 F 1.0 to 10.0 F
M
Stage Fan Down @ 20% 0 to 100% M
Stage Fan Up @ 80% 0 to 100% M
Valve Control Range (Min) 10% 0 to 100% M
Valve Control Range(Max) 90% 0 to 100% M
Valve Type NC to tower NC, NO M
Minimum Start Position 0% 0 to 100% M
Minimum Position @
60 F 0 to 100 F
M
Maximum Start Position 100% 0 to 100% M
Maximum Position @
90 F 0 to 100 F
M
Error Gain 25 10 to 99 M
Slope Gain 25 10 to 99 M
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