LOCATING WALK-IN EVAPORATORS
Locate evaporators so the air pattern will cover the room and air circulates through the product. Do
not restrict the inlet or outlet air stream. Do not place evaporators above or close to doors.
When
possible, direct the air stream toward doors or down an aisle-way. Always leave open space for good
air circulation and servicing the unit. Leave space between cartons of product for the fastest tempera-
ture reduction and freezing. Baffles or auxiliary fans may be required to direct air to specific areas of
a room. The manner in which the product is stacked will influence pull-down time and air circulation.
See below for a recommended evaporator location and air circulation pattern. This method provides
fast product cooling and freezing. The larger the mass of product, the longer it takes to extract the
heat from the center of that mass. Divide the mass by separating the product with spacers as shown
or leave air space between cartons so the cold air can wash the heat away quicker. Do not store
product against a wall or directly on the floor. Always leave 1 or more inches of air space along side
walls and each end wall space should be equivalent to the evaporator height or more. Do not locate
evaporators where there will be ceiling beams, truss, or other obstructions that will interfere with the
discharge air stream. Do not stack product in front of the evaporator higher than 12 inches below the
bottom of the drain pan.
MOUNTING EVAPORATORS
The ceiling structure must have adequate strength to support the refrigeration equipment plus all other
loads. Weight of equipment, piping, controls, accessories, refrigerant and people must always be cal-
culated and considered. Stainless steel fasteners are recommended for mounting evaporators. Use a
minimum
5/16 inch fastener with LPE, HSE and LVE; 3/8 inch fasteners with MSE and CSE; and 1/2
inch fasteners with CED and KED evaporators. Use large flat washers next to the hanger bars and if
evaporators are suspended from threaded rods they must also have a nut and washer above the
hanger bar to securely hold the unit to the rod. Tighten all fasteners to prevent coming loose during
operation.
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