Specifications

5
All measurements are taken per CRMA specifications.
Electrical Data
Model
Fans
per
Case
Standard Fans
Condenser
Fans
Drain
Pump
Evaporator
Pan Heater
Drain
Heater
120 Volts 120 Volts 120 Volts 120 Volts 120 Volts
Amps Watts Amps Watts Amps Watts Amps Watts Amps Watts
ONNA 3' 2 0.68 34 0.53 55 1.0 120 4.16 500 0.32 40
Defrost Controls
Electric Defrost Timed Off Defrost Hot Gas Defrost Reverse Air Defrost
Model
Defrosts
Per Day
Fail-
Safe
(min)
Termination
Temp (°F)
Fail-
Safe
(min)
Termination
Temp (°F)
Fail-
Safe
(min)
Termination
Temp (°F)
Fail-
Safe
(min)
Termination
Temp (°F)
ONNA
3' 6 --- --- 28 52 --- --- --- ---
Guidelines & Control Settings
Model
24 Hour
Energy Usage
(kWh)
Suction Pressure
@ Case Outlet
(psig)
Superheat Set
Point @ Bulb
(°F)
Discharge
Air
(°F)
Return
Air
(°F)
Discharge Air Ve-
locity1
(FPM)
ONNA 3' 24.3 17 6-8 34 46 200
1
Average discharge air velocity at peak of defrost.
System Requirements
Model Volts Phase Hz Wire
Minimum
Circuit
Ampacity
Maximum
Overcurrent
Protection Connection Plug
ONNA 3' 120 1 60 2 wire + ground 15.5 20 NEMA - L5-20
Condensing Unit Data
Model Volts Phase
Frequency
(Hz) HP
RLA2
(amps)
LRA3
(amps) Refrigerant
Refrigerant
(lbs.)
ONNA 3' 120 1 60 1/2 9.30 36.0 R134A 2.20
2
RLA = Running Load Amps.
3
Locked Rotor Amps.
Low Temperature Defrost Schedule
No. Per Day Hours
1 12 midnight
2 12 am - 12pm
3 6 am - 2pm - 10pm
4 12 am - 6am - 12pm - 6pm
CASE OPERATION