Kramer 6 HP Low Temperature Refrigeration Condensing Unit
The Kramer KFO600L4SEB is a 6 HP outdoor condensing unit built for the largest low-temperature walk-in freezers in this line. A ZF18K4E low-temperature scroll compressor delivers approximately 19,440 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. Offered in 208-230V three-phase only, it is sold as the condensing unit and matches a Kramer low-profile electric-defrost evaporator to form a complete freezer system.
Is a 6 HP Low-Temp Condensing Unit the Right Size?
This is the largest condensing unit in the Kramer low-temperature scroll line. At 95°F ambient and -20°F SST it produces about 19,440 BTUH on R448A or R449A, matched to large industrial and distribution freezers held near -10°F. Freezer load is driven by insulation R-value, outdoor ambient, door-opening frequency, the quantity and entering temperature of product frozen each day, and required pull-down time, so a computed heat-load calculation should drive selection at this scale.
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 KFO600L4SEB is factory-matched to the KL6E162DDASC 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: the largest walk-in freezers, including frozen distribution centers, food-processing plants, and industrial cold storage.
For a smaller freezer, see the Kramer 5 HP KFO500L4SEB 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 | KFO600L4SEB |
|---|---|
| Horsepower | 6 HP |
| Compressor | ZF18K4E Low-Temperature Scroll Compressor |
| Application | Low Temperature Walk-In Freezer Refrigeration |
| Refrigerant | R448A or R449A |
| Capacity | Approximately 19,440 BTUH at 95°F ambient and -20°F SST |
| Electrical | 208-230V, Three Phase, 60 Hz |
| Minimum Circuit Ampacity | 30.7 A |
| Maximum Overcurrent Protection | 50 A |
| Matched Evaporator | KL6E162DDASC Low Profile Unit Cooler (sold separately) |
| Factory Charge | Nitrogen Holding Charge — Refrigerant Field Supplied |
| Manufacturer Warranty | 1 Year |
Condensing Unit Features
- 6 HP ZF18K4E low-temperature scroll compressor rated for walk-in freezer duty
- Approximately 19,440 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 three phase, drawing about 19.6 rated load amps and 156 locked rotor amps, on a 30.7 amp minimum circuit ampacity and 50 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 KFO600L4SEB condensing unit built for?
It is the largest low-temperature condensing unit in this Kramer line, a 6 HP unit for large industrial and distribution walk-in freezers, rated about 19,440 BTUH at 95°F ambient and -20°F SST on R448A or R449A for a box held near -10°F.
Is the KFO600L4SEB available in single-phase?
No. At 6 HP it is offered only as a 208-230V three-phase condensing unit; a compressor this size is impractical on single-phase power, so there is no single-phase 600 model.
Does this listing include the freezer evaporator?
No. The KFO600L4SEB is the outdoor condensing unit only. A matched low-profile electric-defrost evaporator is required to complete the walk-in freezer system and is sold separately.
Which evaporator matches the KFO600L4SEB?
Kramer factory-matches it with the KL6E162DDASC low-profile electric-defrost unit cooler, sold separately.
What electrical service does the KFO600L4SEB require?
A dedicated 208-230V three-phase, 60 Hz circuit sized for about 19.6 rated load amps and 156 locked rotor amps, with a 30.7 amp minimum circuit ampacity and 50 amp maximum overcurrent protection.
Does the KFO600L4SEB ship with a refrigerant charge?
No. It ships under a nitrogen holding charge only; R-448A or R-449A is field supplied, and the completed system is charged and commissioned by an EPA 608 certified technician.
Kramer KFO Condenser Technical SpecificationsKramer Installation GuideKramer Maintenence ManualKramer Warranty
