MICRO-AIR Artic Air 24 Guía de instalación descargar pdf (Pagina 19)

try to show every possible combination here. However, no matter what the layout or how many

different “zones” a system has, the same logic and rules apply. The following illustration shows a

simplified diagram of a three zone system which consists of one refrigerator box, one freezer box

and one Arctic Air

air conditioning zone. In this example only one plate is shown in each zone.

However, if there is more that one plate in a single zone, the liquid line is split and routed to each

valve separately. After the evaporators, all outlets are connected to a common suction (return)

tube.

Installing Check Valves

A check valve is used on the 1/2" suction line of the refrigerator and freezer zones so there is no

box interaction. A check valve is not required on any Arctic Air

air conditioning zone, nor when

there is only one refrigerator or freezer zone. The check valves can be installed in any position

horizontally or vertically as long as the direction arrow is observed. There are examples in the

“Avoiding Oil Traps” section below that further illustrate check valve location.

Installing the Correct Plate

Each plate is labeled on the back if it is a freezer or a refrigerator holding plate. The refrigerator

plate is also notched ONCE on the front face in the upper right of the flange. The freezer plate is

notched TWICE on the front face in the upper right of the flange.

Refrigerator Freezer

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MICRO-AIR Artic Air 24 Guía de instalación Pagina 19