Description
Product Summary
This walk-in cooler refrigeration system pairs the Tecumseh ARGUS ASHR9512ZFAFP1 (Tecumseh item 2JH3203-PF) 1-1/2 HP medium temperature outdoor condensing unit with the Bohn BEL0155AS6AMAB0405 low profile unit cooler. It is sized for a 12' x 16' walk-in cooler with an 8 ft ceiling held at 35°F, a common setup for restaurants, convenience stores, florists and small grocers.
Tecumseh publishes an ARGUS Indoor/Outdoor Quick Match chart that lists a standard box load of 13,887 BTU/h for a 12' x 16' x 8' cooler at 35°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 +25°F suction temperature the ARGUS ASHR9512ZFAFP1 is rated at 14,539 BTU/h, and the Bohn BEL0155AS6AMAB0405 delivers 16,800 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 1-1/2 HP unit uses a hermetic reciprocating compressor and a tube and fin condenser coil in a painted outdoor cabinet that runs on 208/230V 3-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 115V with 3 2-speed EC fan motors, and uses air defrost, the normal choice for a cooler held above freezing. It is the B0405 version, so the thermostatic expansion valve (TXV), liquid line solenoid valve and electronic room thermostat come factory mounted for R-448A and R-449A. That means fewer loose parts on the job and a cleaner, faster install.
Key Features
- Premium Tecumseh ARGUS condensing unit: a 1-1/2 HP hermetic reciprocating compressor with receiver, drier, sight glass and head pressure control already built in.
- Capacity checked on R-448A: 14,539 BTU/h from the condensing unit and 16,800 BTU/h from the unit cooler against a 13,887 BTU/h box load at 95°F outdoor air.
- Factory-mounted valves and thermostat: the TXV, liquid line solenoid valve and electronic room thermostat arrive mounted on the unit cooler.
- 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 cooler is this system for?
It is sized for a 12' x 16' walk-in cooler with an 8 ft ceiling held at 35°F under a standard load of 13,887 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 the box temperature controlled?
The electronic room thermostat opens and closes the liquid line solenoid valve. When the box reaches temperature, the solenoid closes, the system pumps down and the compressor shuts off on its low pressure control. When the box warms up, the solenoid opens and the compressor restarts. The TXV meters refrigerant into the unit cooler coil the whole time.
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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