Carrier 48NET Bedienungsanleitung PDF herunterladen (Seite 13)

UNIT MOUNTING (INDOOR)

Mounting Bracket – The fan coil units are furnished with

mounting bracket to hang the unit.

Support – Adequate support must be provided to handle the

weight of all fan coils. Refer to the Physical Data section for

weights, and the base unit dimensional drawings.

Unit Leveling – For reliable operation, units should be level in all

planes.

Clearances – Minimum clearance as shown in Fig. 7.

Unit location – Select a location which will provide the best air

circulation for the room. These units should be positioned as high

as possible on the wall for the best air circulation. The unit return

and discharge should not be obstructed by furniture, curtains, or

anything which may cause the unit to short cycle or air to recycle.

Place the unit in the middle of the selected wall (if possible). Use

an outside wall, if available, to make piping easier, and place the

unit so it faces the normal location of room occupants.

UNIT MOUNTING (OUTDOOR)

Support – A location which can bear the weight of outdoor unit.

Refer to the Physical Data section for weights, and base

dimensional drawings.

Unit Leveling – For reliable operation, units should be level in all

planes.

Clearances – Minimum clearances, as shown in Fig. 8 and 9, must

be provided for airflow. The outdoor units are designed for

free--blow applications. Air inlets and outlets should not be

restricted.

Unit location – A location which is convenient to installation and

not exposed to strong wind.

SYSTEM OPERATING CONDITIONS

Cooling operating range:

Maximum Minimum

_F(_C)

Outdoor Unit

118

(47.8)

---

( --- 5 )

---

Heating operating range:

Maximum Minimum

_F(_C)

Outdoor Unit

(26.7)

---

( --- 1 5 )

---

METERING DEVICES

The outdoor unit has multiple electronic expansion valves to

manage the refrigerant flow to the different indoor fan coils

connected to that unit.

REFRIGERANT LINES

Routing – Refrigerant lines can be routed in any of the four

directions shown in Fig. 10.

Right Exit

Right Rear Exit

3LeftExit

Left Rear Exi

(a)

(b)

sviewed

rom front

Fig. 10 – Refrigerant Line Routing

A08281

General Guidelines:

1. The 38GVM units are shipped with full charge of R--410A

refrigerant. All charges, line sizing, and capacities are based

on runs of 25 ft (7.6 m). For runs over these limits, consult

the Installation Instructions for charge adjustments.

2. Refrigerant lines should not be buried in the ground. If it is

necessary to bury the lines, not more than 36 inches (914

mm) should be buried. Provide a minimum of 6 inch (152

mm) vertical rise to service valves to prevent refrigerant

migration.

3. Both lines must be insulated. Use a minimum of ½-- i n c h

(12.7 mm) thick insulation. Closed--cell insulation is

recommended in all long--line applications.

4. Special consideration should be given to isolating

interconnecting tubing from the building structure. Isolate

the tubing so that vibration or noise is not transmitted into

the structure.

Long Line Applications:

1. No change in line sizing is required.

2. Additional charge is required for line lengths above those

mentioned in the General Guidelines section. Refer to the

Installation Instructions for further detail.

38/40GVM

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