4-Body Extra-Wide Mortuary Refrigerator

Required Air Clearance & Owner Maintenance, Policy VC-1.1

Standard on all AMC drop-in refrigeration systems. These are conditions of warranty coverage, not recommendations.

• 1″–1.5″ minimum air gap around the entire cabinet: all sides and rear, maintained permanently.
• the overhead and side clearances required by the exact refrigeration package / condensing unit for airflow, heat rejection, and service access.
• No shelving, cabinetry, soffits, dropped ceilings, boxed enclosures, adjacent equipment, or stored goods may encroach on either envelope.

Owner Maintenance Responsibility

The customer is responsible for ongoing maintenance of the compressor and refrigeration system, including annual professional service as needed: coil cleaning, drain-line clearing, gasket inspection, and verification of refrigerant charge and temperature performance. Routine maintenance, consumables, labor, and service calls are not warranty items.

Published exterior dimensions do not include required clearance, add it when planning your space. Full terms: Ventilation & Clearance Policy (VC-1.1) · Warranty Policy (WR-1.0) · Upright Refrigeration Warranty Claims (RW-1.0) · Ambient Temperature & Refrigeration Sizing (AT-1.0)

Adjustable tier mounting

Each roller tier in the 4BX is a frame that rests on angle channels, and each channel is held by four screws driven directly into the refrigerator wall. The 4BX includes four roller tiers for installation on site. Because the channels are fastened rather than welded, a tier can be placed anywhere the wall is reinforced and moved to a new height later if your trays, lift or staff need it.

The tier channel mounting guide shows the layout step by step. You can also download the one-page Tier Channel Mounting Quick Sheet (PDF), which is page 11 of the 4BX user manual. For sizing help, see the 4-body refrigerator guide.

Standard design features

• Self-contained condensing unit. The compressor, condenser and evaporator come as one factory-packaged unit for mounting on the cabinet. Setting or installing this refrigeration unit is not included in refrigerator-box factory assembly.
• Digital thermometer and temperature controller. A digital display shows the box temperature at a glance, and the controller holds the setpoint you choose for body holding.

Doors, casters and refrigeration

• 6″ heavy-duty plated casters. Add a set of four casters to make the cabinet mobile: two locking and two non-locking. Reposition only as permitted by the equipment manual and the approved total load. Engage the specified brakes when the equipment is positioned; caster ratings do not authorize movement while loaded.
• Chrome-plated lockable door handle. A standard handle is included. Add the chrome-plated lockable handle to keep the refrigerator closed to everyone except authorized staff.
• Magnetic gasketed door seal. The insulated door closes against a magnetic gasket that seals the whole door edge, which keeps cold air in and holds 34–40°F after the door is opened. Clean and inspect the gasket weekly with mild soap and water.
• Energy-compliant refrigeration. The self-contained drop-in refrigeration system uses A2L refrigerant and meets current DOE/EPA efficiency rules. Standard units are sized for a conditioned room, and upgrade levels are available for warmer rooms.

Ambient Room Temperature & Refrigeration Sizing, Read Before You Order

The temperature of the room around your refrigerator matters as much as the refrigerator itself. Every refrigeration system rejects heat into that room. The hotter the room, the longer the compressor runs, and the harder it is to hold a steady 34–40°F. Standard refrigeration is sized for a conditioned, ventilated indoor room. If your space runs warm, upsize the refrigeration when you order. It costs far less than a struggling system, temperature swings, or a warranty claim later.

Why ambient temperature is critical

• Holding temperature: an undersized system in a hot room cannot recover after each door opening, so box temperature drifts above 40°F.
• Compressor life: long, continuous run times in high heat wear out the compressor and fans early.
• Condensation & humidity: warm, humid rooms produce more condensate. Connect the drain line, and route it to the external drain or a condensate pump.
• Warranty: incorrect sizing, installation or placement voids the warranty. Choose the level that matches your hottest conditions, not your average.

How to choose

• Measure the room where the refrigerator will sit at the hottest time of day in the hottest month, not when the HVAC is running at its best.
• Account for heat from nearby equipment, sun-facing walls, bay doors and how often the refrigerator is opened.
• Keep the required clearances: 1″–1.5″ around the cabinet and the overhead and side clearances required by the exact refrigeration package. A blocked compressor behaves like a hot room.
• Install indoors only. Unconditioned garages, mechanical rooms and rooms next to crematory retorts need a review before ordering, call 1-888-792-9315.

If the room runs warmer than 75°F, choose a Refrigeration Upsize option above. Full terms: Ventilation & Clearance Policy (VC-1.1) · Warranty Policy (WR-1.0) · Upright Refrigeration Warranty Claims (RW-1.0) · Ambient Temperature & Refrigeration Sizing (AT-1.0)

Important, Read Before Startup: 2026 Packaged Refrigeration System

Due to the changing refrigerant models under new Freon regulations and updated guidelines, it is critical that you completely read all startup instructions before using your packaged refrigeration system. Please be sure you understand your startup settings and the proper overflow and humidity drainage ports, which require hose adapters.

Condensation Drain Requirement

All 2026 Heatcraft compressors require a drain hose attached to the drain port for condensation, to maximize energy efficiency. Connect the supplied drain line to the drain port before startup.

External Drain Connection

In high-humidity environments or during continuous heavy run-times, the unit may experience overflow. To prevent this, the indoor unit is equipped with a 3/4″ NPT external drain connection that can be routed to an external drain line or a field-supplied condensate pump.

Internal Re-Evaporation

Indoor PRO³ models include a hot-gas re-evaporation pan beneath the compressor, which uses hot refrigerant gas to evaporate condensation naturally during normal operation.

2026 and Forward, Heatcraft PRO³

2026 and later packaged Heatcraft PRO³ systems include many new features made possible by an extremely high-efficiency process. Reviewing the startup documentation ensures these systems perform as designed.

American Mortuary Coolers accepts no liability or responsibility for a customer’s failure to properly start up the new AW2 fully packaged, plug-in refrigeration units. If you have specific questions regarding functions and operations, please reach out prior to ordering.

Full startup manuals and tech bulletins: Packaged Refrigeration Manuals & Startup Guide

Questions before you order? Call 1-888-792-9315 or email [email protected].