Description
Product Summary
This walk-in freezer refrigeration system pairs the Tecumseh ARGUS ASHS2520ZNAFP1 (Tecumseh item 2JH5003-PF) 5 HP low temperature outdoor condensing unit with the Bohn BEL0155BS6EEAB0200 low profile unit cooler. It is sized for a 12' x 16' walk-in freezer with an 8 ft ceiling held at -10°F, a common setup for restaurants, ice cream shops, butchers and grocers that need frozen storage.
Tecumseh publishes an ARGUS Indoor/Outdoor Quick Match chart that lists a standard box load of 13,314 BTU/h for a 12' x 16' x 8' freezer at -10°F with 95°F outdoor air. Tecumseh's own chart pairs ARGUS with a LU-VE unit cooler, which is not sold through our distribution network, so we built this as an engineered match with a Bohn unit cooler of equal or greater capacity. The match is checked on R-448A: at 95°F ambient and a -20°F suction temperature the ARGUS ASHS2520ZNAFP1 is rated at 15,032 BTU/h, and the Bohn BEL0155BS6EEAB0200 delivers 16,000 BTU/h at a 10°F coil temperature difference, so both halves of the system cover the box load.
ARGUS is Tecumseh's premium outdoor condensing unit line. This 5 HP unit uses a scroll compressor with liquid injection for low temperature duty and a tube and fin condenser coil in a painted outdoor cabinet that runs on 208/230V 1-phase power. It comes with service valves, a receiver, liquid line filter drier and sight glass, crankcase heater, high and adjustable low pressure controls and head pressure control for year-round outdoor operation, and it is rated for R-404A, R-448A, R-449A and R-452A.
The Bohn unit cooler mounts to the ceiling of the box, runs on 208/230V with three single-speed EC fan motors and uses electric defrost with 3,150 W of defrost heaters, the standard choice for a freezer. It is the B0200 version with Heatcraft's factory intelliGen refrigeration controller, which manages box temperature and the electric defrost cycles, so the system does not need a separate defrost timer.
Key Features
- Premium Tecumseh ARGUS condensing unit: a 5 HP scroll compressor with receiver, drier, sight glass and head pressure control already built in.
- Capacity checked on R-448A: 15,032 BTU/h from the condensing unit and 16,000 BTU/h from the unit cooler against a 13,314 BTU/h box load at 95°F outdoor air.
- Factory intelliGen controller: the unit cooler controls box temperature and electric defrost on its own, with no add-on timer to wire.
- Low profile unit cooler: a slim ceiling-mounted Bohn coil with EC fan motors that saves headroom and power inside the box.
Frequently Asked Questions
What size walk-in freezer is this system for?
It is sized for a 12' x 16' walk-in freezer with an 8 ft ceiling held at -10°F under a standard load of 13,314 BTU/h. A box with heavy door traffic, warm product loading or glass doors can need more capacity, so call us at 1.888.509.3391 before ordering if your box is different.
Is this a factory-matched system?
No. Tecumseh's published ARGUS match uses a LU-VE unit cooler. This system uses the box load from Tecumseh's ARGUS Quick Match and a Bohn unit cooler sized to meet it on R-448A. Walk-in refrigeration does not use AHRI matched-system numbers like home air conditioners; each unit is rated on its own and carries its own manufacturer's warranty.
How is defrost handled?
The intelliGen controller on the Bohn unit cooler runs the electric defrost heaters on a schedule it adjusts to frost build-up, then restarts the fans after the coil has drained. The ARGUS condensing unit simply follows the system pressures, so no separate defrost timer is needed.
Does this system need a licensed installer?
Yes. A split refrigeration system needs refrigerant piping, evacuation, charging and electrical work, so it should be installed by a licensed refrigeration technician following the Tecumseh and Heatcraft installation manuals in the documents below.
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