MICRO-AIR Artic Air 24 Guía de instalación descargar pdf (Pagina 26)

Soldering Technique

Caution - Do not overheat the joint as too much heat will burn the flux. If the flux burns, the joint

must be disassembled and thoroughly cleaned or it will be impossible to solder. The flux itself is

a good temperature guide. Heat the tube until the flux passes the "bubbling" temperature range

and becomes completely fluid and transparent.

1. Start heating the tube, first applying the flame at a point just adjacent to the fitting. Work the

flame alternately around the tube and fitting until both reach soldering temperature (as

indicated by the flux becoming clear and fluid) before applying the solder.

2. Move the flame to the fitting and apply solder with a “wiping

action” directly on the connection to ensure that it flows evenly

into the joint. The molten solder should be spread evenly

around the entire fitting. Do not keep adding solder and heat in

an attempt to “fill the joint” as this can allow liquid solder to flow

into the system. (Indeed, we have seen solenoid valves

completely filled with solder by well intended installers trying to

ensure a good connection.) A properly soldered joint requires

very little solder.

3. Sweep the flame back and forth along the axis of assembled joint...tube and fitting...to achieve

uniform heat in both parts.

4. After the joint is soldered, with the tube still warm, throughly clean joint of all excess flux using

water and a rag.

Insulating the suction lines

The suction (return) lines from the holding plate to the Micro Condensing Unit assembly will

sweat in humid weather unless they are insulated. All 1/2" suction (return) lines outside the box

should be covered with a “slip on” neoprene foam pipe insulation to prevent unwanted

condensation. It is not necessary to insulate the 1/4" liquid lines. Slip-on foam tube insulation

can be purchased from some hardware stores and all plumbing and refrigeration equipment

supply stores. This insulation is also available with a split for installation on existing tubing runs.

When installing the insulation DO NOT leave gaps between sections. Insulation sleeves should

be bonded (and sealed) together with rubber cement. Leaving gaps, cracks or other openings in

the insulation will cause condensate (water) to collect along the length of the tube and run out

these openings in surprisingly large quantity.

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MICRO-AIR Artic Air 24 Guía de instalación Pagina 26