Carrier 42C,V Manual de instalación descargar pdf (Pagina 45)

c. If not already installed, install the floor and ceiling

tracks up to and over the 42SJ fan coil unit.

d. Position the vertical studs and fasten into each of

the stud pockets formed into the chase side panels

(see Fig. 41).

NOTE: The studs may be mechanically fastened

to the 42SJ fan coil. Care should be taken, how-

ever, not to penetrate the supply or return water

risers or internal piping. Given the levelness of the

floor and/or the fan coil assembly, some shimming

may be necessary.

e. Assemble the specified wall construction up to

and over the top of the fan coil unit (see Fig. 42).

f. With the fire-wall separation being complete, the

drywall skin on the surface of the individual fan

coils can be applied. Drywall can be applied

directly to the surface, or, if necessary, studding

may be installed on the corners for vertical control

(see Fig. 42).

g. For ease of installation of the access panel, apply

drywall on the return air side directly to the sur-

face of the unit (see Fig. 42). When applying the

wall board directly to the unit cabinet, it may be

necessary to shim the wall board in some areas to

achieve the desired finished wall surface.

h. After all drywalling and painting is complete,

install thermostats, supply air grilles and return air

panels.

7. Attach unit risers:

NOTE: Submittals and product literature detailing unit

operation, controls, and connections should be thorough-

ly reviewed BEFORE beginning the connection and test-

ing of risers and piping. The supply and return connec-

tions are marked on the coil stub-outs and the valve pack-

age with an “S” meaning supply or inlet and “R” meaning

return or outlet indicating flow direction to and from the

coil. Blue letters mark the chilled water connections and

red letters mark the hot water connections.

a. Each riser has a 3-in. swaged portion at top and

sufficient extension at bottom for an inserted

length of approximately 2-inches. This unit-to-

unit joint is NOT intended for full bottoming in

the joint, but allows for variations in floor-to-floor

dimensions and for correct riser positioning.

If job requires that unit risers be supplemented

with between-the-floor extensions, pieces may be

field-supplied or factory-supplied. If factory-

supplied, insulation is also provided.

b. Level unit to ensure proper coil operation and

condensate drainage. Proper riser installation and

vertical positioning in the unit provides for a unit

piping run-out to the service valves which are cen-

tered in the access slots and level or sloping down

slightly away from the riser. This prevents con-

densation from running back to the riser and pos-

sible damage from dripping at the bottom of a

riser column. Each job has specific requirements,

and satisfying those requirements is the responsi-

bility of the installer. After units are positioned

and riser centered in pipe chase, make unit plumb

in two directions, using unit frame as a reference.

c. Anchor unit to building. Use bolts or lag screws

through holes provided in unit frame.

d. After all units in a stack are anchored, make unit-

to-unit riser joints. First, center each coil-to-riser

line within the expansion slot in the unit back

panel. Each riser joint must be in vertical

alignment with at least 1-in. penetration into the

swaged joint. This condition is met if floor-to-

floor dimension is as specified and coil-to-riser

lines are properly centered. Wide variations in

floor-to-floor dimensions may necessitate cutting

off or extending individual risers. Such modifica-

tions are the full responsibility of the installing

contractor.

e. Before making the riser joints, the riser insulation

must be pulled back away from the joint and pro-

tected from heat during the brazing process. The

riser joint filler material must be selected to with-

stand the total operating pressure (both static and

pumping head) to which the system will be sub-

jected. Low temperature lead alloy solders such as

“50/50” and “60/40” are normally not suitable.

INSTALL WALL

STUD INTO

POCKET

FORMED BY

CHASE SIDE

PANEL

CHASE

SIDE

PANEL

DRYWALL

TRACK AND

STUD

CONTROL

LINES

INSTALL STUDS FROM TOP OF

UNIT TO CEILING (4 CORNERS)

Fig. 41 — 42SJ Wall Board Installation

WALL STUDS

INSTALL WALL

GYPSUM

BOARD

(TO WALL AND

OVER TOP OF

UNIT)

INSTALL

GYPSUM

BOARD TO

UNIT SIDES

INSTALL

GYPSUM

BOARD TO

FACE OF

UNIT WITH

CUT OUTS

FOR SUPPLY,

RETURN AND

THERMOSTAT

Fig. 42 — 42SJ Unit Installation

CAUTION

Toxic residues and loose particles resulting from manufac-

turing and field piping techniques such as joint compounds,

soldering flux, and metal shavings may be present in the

unit and the piping system. Special consideration must be

given to system cleanliness when connecting to solar,

domestic or potable water systems. Failure to heed this

warning could result in equipment damage.

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