Kramer 2.3 HP Low Temperature Refrigeration Condensing Unit
The Kramer KFO230L4SDA is a 2.3 HP outdoor condensing unit built for low-temperature walk-in freezer refrigeration. A ZF07KAE low-temperature scroll compressor delivers approximately 6,370 BTUH at a 95°F ambient and a -20°F saturated suction temperature on R448A or R449A refrigerant, holding a walk-in freezer near a -10°F box temperature. This is the outdoor condensing unit only; it pairs with a matched Kramer low-profile electric-defrost evaporator to form a complete freezer system.
Is a 2.3 HP Low-Temp Condensing Unit the Right Size?
At 95°F ambient and -20°F SST the KFO230L4SDA produces about 6,370 BTUH on R448A or R449A, matched to a walk-in freezer holding roughly -10°F. Freezer load is driven by insulation R-value, outdoor ambient, door-opening frequency, the quantity and entering temperature of product frozen or stored each day, and required pull-down time, so size from a calculated load rather than floor area alone.
This listing is for the outdoor condensing unit only. To build a complete walk-in freezer system, it pairs with a matched Kramer low-profile unit cooler with electric defrost — the KFO230L4SDA is factory-matched to the KL6E066DDASC evaporator. Low-temperature evaporators use electric defrost rather than air defrost, because a freezer coil accumulates frost that off-cycle box air cannot clear.
Ideal for: mid-size walk-in freezers in grocery stores, restaurants, commissary kitchens, and ice cream or frozen-food operations.
Need more capacity? Step up to the Kramer 2.5 HP KFO250L4SDA Low-Temp Condensing Unit. For a smaller freezer, see the Kramer 1.5 HP KFO160L4SDA Low-Temp Condensing Unit.
Recommended refrigeration applications are general guidelines only. Actual system requirements depend on insulation, ambient conditions, door openings, product load, and operating temperature. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
Condensing Unit Specifications
| Condensing Unit Model | KFO230L4SDA |
|---|---|
| Horsepower | 2.3 HP |
| Compressor | ZF07KAE Low-Temperature Scroll Compressor |
| Application | Low Temperature Walk-In Freezer Refrigeration |
| Refrigerant | R448A or R449A |
| Capacity | Approximately 6,370 BTUH at 95°F ambient and -20°F SST |
| Electrical | 208-230V, Single Phase, 60 Hz |
| Minimum Circuit Ampacity | 17.5 A |
| Maximum Overcurrent Protection | 25 A |
| Matched Evaporator | KL6E066DDASC Low Profile Unit Cooler (sold separately) |
| Factory Charge | Nitrogen Holding Charge — Refrigerant Field Supplied |
| Manufacturer Warranty | 1 Year |
Condensing Unit Features
- 2.3 HP ZF07KAE low-temperature scroll compressor rated for walk-in freezer duty
- Approximately 6,370 BTUH at 95°F ambient and -20°F saturated suction on R448A or R449A
- Configured for R448A and R449A, the current-generation replacements for R404A in low-temperature refrigeration
- Integral liquid sub-cooling circuit for improved efficiency and stable expansion valve operation
- Flooded head pressure control standard, supporting operation as outdoor ambient temperatures drop
- Generously sized condenser coil with enhanced copper tubes and aluminum fins in an all-weather painted galvanized steel housing
- Ships under a nitrogen holding charge, with a refrigerant receiver, isolation valve, and pressure relief plug
- Liquid line with sealed filter and sight glass, factory crankcase heater, and defrost termination provisions for a matched electric-defrost evaporator
- Fixed high-pressure and adjustable low-pressure controls, with quick-access shut-off valves and color-coded point-to-point wiring
- 208-230V single phase, drawing about 12.4 rated load amps and 75 locked rotor amps, on a 17.5 amp minimum circuit ampacity and 25 amp maximum overcurrent protection
Specifications & Manuals
Product documentation includes technical specifications, installation information, maintenance instructions, and warranty information to assist with equipment selection, installation, and service. This condensing unit carries a 1 year manufacturer warranty; see the Kramer warranty documentation above for full coverage terms and conditions.
Frequently Asked Questions
What is the KFO230L4SDA built for?
It is a 2.3 HP low-temperature condensing unit for mid-size walk-in freezers, rated about 6,370 BTUH at 95°F ambient and -20°F SST on R448A or R449A for a box held near -10°F.
What evaporator is matched to the KFO230L4SDA?
Kramer matches it with the KL6E066DDASC low-profile electric-defrost unit cooler, which is sold separately and completes the freezer system.
What are the electrical requirements for the KFO230L4SDA?
A dedicated 208-230V single-phase, 60 Hz circuit sized for about 12.4 rated load amps, with a 17.5 amp minimum circuit ampacity and 25 amp maximum overcurrent protection.
What refrigerant does the KFO230L4SDA use?
R448A and R449A, the current-generation lower-GWP replacements for R404A in commercial low-temperature refrigeration.
Does the condensing unit provide for the evaporator's defrost?
Yes. The unit includes defrost termination provisions for a matched electric-defrost evaporator, so the timed defrost cycle can end on temperature.
Is refrigerant included with the KFO230L4SDA?
No. It ships under a nitrogen holding charge; the completed system is evacuated, charged with R-448A or R-449A, and commissioned in the field by an EPA 608 certified technician.
Kramer KFO Condenser Technical SpecificationsKramer Installation GuideKramer Maintenence ManualKramer Warranty
