Carrier 50PG03-07 Especificações descarregar pdf (Página 2)

INSTALLATION

Step 1 -- Plan for Unit Location -- Select a loca-

tion for the unit and its support system (curb or other) that

provides minimum clearances required for safety, unit perfor-

mance and service access below, around and above unit as

specified in unit drawings. Consider also the effect of adjacent

units.

Do not install unit in an indoor location. Do not locate air

inlets near exhaust vents or other sources of contaminated air.

Although unit is weatherproof, guard against water fiom higher

level runoff and overhangs.

Select a unit mounting system that provides adequate height

to allow installation of condensate trap per requirements. Refer

to Step 6 -- Install External Trap for Condensate Drain for

required trap dimensions.

ROOF MOUNT -- Check building codes for weight distribu-

tion requirements. Unit operating weight is shown in Table 1.

Step 2 -- Provide Unit Support

ROOF CURB -- Assemble or install accessory roof curb in

accordance with instructions shipped with this accessory. See

Fig. 1. Install insulation, cant strips, roofing, and counter flash-

ing as shown. DuctwoN can be inst_dled to roof curb before unit

is set in place. DuctwoN must be attached to curb and not to the

unit. Curb must be level. This is necessary to permit unit drain to

fimction properly. Unit leveling tolerance is _+J/l_, in. per linem

fl in any direction. Refer to Accessory Roof Curb Installation

Instructions for additional information as required. When acces-

soU roof curb is used, unit may be installed on class A, B, or C

roof covering materi_d. CmTier roof curb accessories are for flat

roofs or slab mounting.

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

critical for a watertight seal. Install gasket with the roof

curb as shown in Fig. 1. Improperly applied gasket can also

result in air leaks and poor unit performance. Do not slide

unit to position on roof curb.

ALTERNATE UNIT SUPPORT- When a curb cannot be

used, install unit on a noncombustible surface. Support unit

with sleepel.s, using unit curb support area. If sleepers c_mnot

be used, support long sides of unit with a minimum of 3 equ_fl-

ly spaced 4-in. x 4-in. pads on each side.

Step 3 -- Rig and Place Unit -- Inspect unit for trans-

portation damage. See Table 1 for physical &_ta. File any claim

with transportation agency.

All panels must be in place when rigging. Damage to unit

may result.

Do not drop unit; keep upright. Use top crate to prevent

sling or cable &_mage. Rollel_ may be used to move unit across

a roof. Level by using unit rail as a reference; leveling tolerance

is + 1/16 in. per linear fl in any direction. See Fig. 2 for addition-

al information. Unit rigging weight is shown in Fig. 2.

Rigging holes are provided in the unit base rails as shown in

Fig. 2. Refer to rigging instructions on unit.

Maintain clearance, per Fig. 3, m'ound and above unit to

provide minimum distance fi_)m combustible materials, proper

airflow, and service access. See Fig. 4 for location on access

panels.

After unit is in position, remove crating and polyethylene

sheet.

INSTALLATION ONTO CURB -- The 50PG units me de-

signed to fit on the accessory full perimeter crab. In either case,

correct placement of the unit onto the curb is critical to operat-

ing performance. To aid in correct positioning, place unit on

roof curb to maintain I/4-in. gap between the inside of rail and

roof curb on long sides and a I/z-in. gap between the inside of

rail and roof curb on both duct and condenser ends. Refer to

Fig. 1 and 3, to assure proper duct opening alignment.

NOTE: Before positioning unit onto curb, refer to Step 6 --

Install External Trap for Condensate Drain section on page 7

concerning bottom di'ain connection plug.

Do not slide unit to position it when it is sitting on the curb.

Curb gasketing material may be ck_maged and leaks may

result.

SLAB MOUNT (Horizontal Units Only) -- Provide a level

concrete slab that extends a minimum of 6-in. beyond unit cab-

inet. Install a grovel apron in front of condenser-coil air inlet to

prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may also be installed on a roof curb if

required.

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