Kramer 6 HP Medium Temperature Walk-In Cooler Refrigeration System
The Kramer KFO600E4SEA outdoor condensing unit and two KL6A195ADASC low profile unit coolers form a factory-matched 6 HP medium temperature refrigeration package for the largest walk-in coolers in this line, at and beyond roughly 20 ft × 40 ft. A single ZS45K4E three-phase scroll condensing unit feeds two four-fan KL6A195 coils for the highest capacity in the range. Configured for R448A or R449A refrigerant and 208-230V three-phase power, it is built for industrial cold storage, high-volume distribution, and food-processing facilities.
Is a 6 HP Refrigeration System the Right Size?
This package is matched to the largest standard medium temperature coolers, at and beyond about 20 ft × 40 ft holding 35°F to 38°F. At 25°F suction on R448A or R449A the KFO600E4SEA condensing unit produces 47,250 BTUH at a 95°F ambient, with a matched system rating near 46,800 BTUH at 25°F SST — the highest capacity in this line and well above the largest box in the standard selection guide.
With the line's biggest compressor behind two KL6A195 coils, this package is reserved for the largest and busiest rooms, still holding 42,720 BTUH at a 110°F ambient. Because rooms of this scale differ widely in construction, door traffic, and product load, a computed heat-load calculation should always drive the final selection.
Ideal for: Industrial cold storage, high-volume distribution centers, food-processing plants, and large central commissaries.
Representative box sizes: 20 ft × 40 ft and larger footprints determined by a calculated heat load, at the top of the medium-temperature range.
For a slightly smaller room, see the Kramer 5 HP KFO500E4SEA & KL6A181ADASC system.
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.
What's Included
| Outdoor Condensing Unit | KFO600E4SEA — 6 HP Medium Temperature Condensing Unit |
|---|---|
| Indoor Evaporator | Two KL6A195ADASC Low Profile Unit Coolers |
| Application | Medium Temperature Walk-In Cooler Refrigeration System |
| System Capacity | Approximately 46,800 BTUH matched system (R448A/R449A, 25°F S.T.), across two coils |
| Refrigerant | R448A or R449A |
| Compressor | High-Efficiency Scroll Compressor |
| Evaporator Defrost | Air Defrost |
| Electrical | 208-230V, Three Phase, 60 Hz Condensing Unit |
| Evaporator Electrical | 115V |
| Factory Charge | Nitrogen Holding Charge — Refrigerant Field Supplied |
| Manufacturer Warranty | 1 Year |
The KFO600E4SEA condensing unit and the two KL6A195ADASC evaporators are also stocked individually for replacement work. Ordering them together as this matched package keeps the condensing unit and coil capacities aligned at design conditions. All units ship under a nitrogen holding charge, so plan on field-supplied R-448A or R-449A refrigerant and evacuation, charging, and commissioning by an EPA 608 certified technician.
Condensing Unit & Evaporator Features
KFO600E4SEA Outdoor Condensing Unit
- 6 HP ZS45K4E scroll compressor for medium temperature commercial refrigeration
- 47,250 BTUH at 95°F ambient and 25°F suction on R448A or R449A
- 42,720 BTUH still available at 110°F ambient and 25°F suction for rooftop and unshaded slab installations
- Integral liquid sub-cooling circuit providing an average 3°F to 5°F of sub-cooling 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 electronic air defrost timer
- 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 draw of 21.5 rated load amps and 156 locked rotor amps, on a 33.1 amp minimum circuit ampacity with 50 amp maximum overcurrent protection
Two KL6A195ADASC Low Profile Unit Coolers
- 22,500 BTUH per coil with R448A or R449A at 25°F SST and 10°F TD (19,500 BTUH on R404A), for a combined matched system near 46,800 BTUH
- Two multi-circuit distributor-fed coils for even refrigerant distribution across the coil face
- Factory-mounted thermostatic expansion valve, selected for R448A and R449A service
- Two four-fan KL6A195 coils moving a combined airflow near 6,280 CFM through a draw-through pattern for even temperature across a large room
- Dual-speed electronically commutated 115V motors with thermal overload protection, compliant with California Title 24
- 6 fins-per-inch coils using 3/8 in. enhanced copper tubes mechanically expanded into corrugated aluminum fins with die-formed collars
- Air defrost configuration intended for coolers held at 35°F and warmer, factory wired to screw-type terminal strips
- Embossed aluminum casings with baffled fan sections, NSF compliant and designed to mount flush to the ceiling
- Removable 3/4-14 NPT drain fitting at the bottom of each pan, replaceable without changing the pan
- Each coil UL and cUL listed with 3/8 in. liquid and 5/8 in. suction connections
Specifications & Manuals
Product documentation includes technical specifications, installation information, maintenance instructions, warranty information, and KL6 Series literature to assist with equipment selection, installation, and service. This system carries a 1 year manufacturer warranty; see the Kramer warranty documentation above for full coverage terms and conditions.
Frequently Asked Questions
What size walk-in cooler is the KFO600E4SEA built for?
The largest medium-temperature rooms in this line, at and beyond about 20 ft × 40 ft holding 35°F to 38°F. Its capacity is well above the largest box in the standard selection guide, so a computed heat load should always determine the final selection.
Is the KFO600E4SEA offered only in three-phase?
Yes. At 6 HP it is built as a 208-230V three-phase condensing unit (KFO600E4SEA); there is no single-phase version at this capacity, since a compressor this size is impractical on single-phase power.
How is the KFO600E4SEA different from the 5 HP KFO500E4SEA?
It uses the largest compressor in the line, a ZS45K4E, with two four-fan KL6A195 coils in place of the KL6A181 coils, raising matched capacity from about 43,248 to 46,800 BTUH at 25°F SST for the very largest or busiest cold rooms.
What electrical service does the KFO600E4SEA require?
A dedicated 208-230V three-phase, 60 Hz circuit sized for about 21.5 rated load amps and 156 locked rotor amps, with a 33.1 amp minimum circuit ampacity and 50 amp maximum overcurrent protection. Each evaporator is powered separately at 115V.
Why does it use two four-fan KL6A195 coils?
Two four-fan coils move roughly 6,280 CFM combined and place cooling at two points in a very large room, holding temperature evenly and shortening recovery. Both coils run from the single ZS45K4E condensing unit.
What facilities use a system this large?
Industrial cold storage, high-volume distribution centers, food-processing plants, and large central commissaries running the biggest medium-temperature rooms.
Kramer KFO Condenser Technical SpecificationsKramer Installation GuideKramer Maintenence ManualKramer KL6 Technical SpecificationsKramer KL6 CatalogKramer Warranty
