Carrier INFINITY 50XT-A Manuel d'instructions télécharger pdf (Page 2)

SAFETY CONSIDERATIONS

Improper installation adjustment, alteration, service, maintenance,

or use can cause explosion, fire, electrical shock, or other

conditions which may cause death, personal injury, or property

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The qualified

installer or agency must use factory--authorized kits or accessories

when modifying this product Refer to the individual instructions

packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Use quenching cloth for brazing operations.

Have a fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions included in

literature and attached to the unit. Consult local building codes, the

current editions of the National Electrical Code (NEC) NFPA 70.

In Canada refer to the current editions of the Canadian electrical

Code CSA C22.1.

Recognize safety information. This is the safety-- alert symbol

When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury. Understand

these signal words; DANGER, WARNING, and CAUTION. These

words are used with the safety --alert symbol. DANGER identifies

the most serious hazards which will result in severe personal injury

or death. WARNING signifies hazards which could result in

personal injury or d eath. CAUTION is used to identify unsafe

practices which may result in minor personal injury or product and

property damage. NOTE is used to highlight suggestions which

will result in enhanced installation, reliability , or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before installing or servicing system, always turn of f main

power and tag disconnect to system. There may be more

than one disconnect switch. Turn off accessory heater power

switch if applicable.

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal

injury or equipment damage.

Puron (R--410A) systems operate at higher pressures than

standard R --22 systems. DO NOT use R --22 service

equipment or components on Puron (R-- 410A) equipment.

Ensure service equipment is rated for Puron (R--410A).

WARNING

CUT HAZARD

Failure to follow this caution may result in personal injury.

When removing access panels or performing maintenance

functions inside your unit, be aware of sharp sheet metal parts

and screws. Although special care is taken to reduce sharp

edges to a minimum, be extremely careful when handling

parts or reaching into the unit.

CAUTION

INTRODUCTION

The 50XT --A packaged heat pump is fully self--contained and

designed for outdoor installation (See Fig. 1). Standard units are

shipped in a horizontal--discharge configuration for installation on

a rooftop, or a cement slab (see Fig. 4 for roof curb details).

Standard units can be converted to downflow (vertical) discharge

configurations for rooftop applications.

RECEIVING AND INSTALLATION

Step 1 — Check Equipment

IDENTIFY UNIT

The unit model number and serial number are printed on the unit

informative plate. Check this information against shipping papers.

INSPECT SHIPMENT

Inspect for shipping damage before removing packaging material.

If unit appears to be damaged or is torn loose from its anchorage,

have it examined by transportation inspectors before removal.

Forward claim papers directly to transportation company .

Manufacturer is not responsible for any damage incurred in transit.

Check all items against shipping list. Immediately notify the

nearest Carrier office if any item is missing. To prevent loss or

damage, leave all parts in original packages until installation.

Step 2 — Provide Unit Support

IMPORTANT: The unit must be secured to the curb by installing

screws through the bottom of the curb flange and into the unit base

rails. When installing large base units onto the common curb, the

screws must be installed before allowing the full weight of the unit

to rest on the curb. A minimum of six screws are required for large

base units. Failure to secure unit properly could result in an

unstable unit. See Warning near Rigging/Lifting information and

accessory curb instructions for more details.

For hurricane tie downs, contact distributor for details and PE

(Professional Engineering) Certificate, if required.

ROOF CURB

Install accessory roof curb in accordance with instructions shipped

with curb (See Fig. 4). Install insulation, cant strips, roofing, and

flashing. Ductwork must be attached to curb.

IMPORTANT: The gasketing of the unit to the roof curb is

critical for a water tight seal. Install gasketing material supplied

with the roof curb. Improperly applied gasketing also can result in

air leaks and poor unit performance.

Curb should be level to within 1/4 in. (6.4 mm) (See Fig. 2). This

is necessary for unit drain to function properly. Refer to accessory

roof curb installation instructions for additional information as

required.

MAXIMUM ALLOWABLE

DIFFERENCE in. (mm)

A-C

1/4

(6.35)

A-B

B-C

A07925

Fig. 2 -- Unit Leveling Tolerances

SLAB MOUNT

Place the unit on a solid, level concrete pad that is a minimum of 4

in. thick with 2 in. (51 mm) above grade. The slab should extend

approximately 2 in. (51 mm) beyond the casing on all 4 sides of

the unit (See Fig. 3). Do not secure the unit to the slab except when

required by local codes.

OPTIONAL

RETURN

AIR

OPENING

OPTIONAL

SUPPLY

AIR

OPENING

EVAP. COIL COND. COIL

2˝

(50.8mm)

A07926

Fig. 3 -- Slab Mounting Detail

50XT--A

1 2 3 4 5 6 7 ... 29 30

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Carrier INFINITY 50XT-A Manuel d'instructions Page 2

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