Carrier 42C,V Manual de instalación descargar pdf (Pagina 47)

2. Locate and mark the riser and drain knockouts that apply

to your particular unit application, ensuring proper orien-

tation of the return air opening in room.

3. Insert a flat head screw driver into knockout slot shown in

Fig. 46.

4. Pry screw driver back and forth until knockout tabs break

away from the unit.

5. Discard knockout. Be careful of sharp edges.

6. Use a sharp retractable knife (see Fig. 47) and vertically

cut the insulation down the center of the riser and drain

knockouts the full length of the knockout.

7. Use adhesive or glue to re-attach insulation that has

pulled away from the unit during knockout removal

process.

Double Riser Swag Installation

1. The riser carton should contain:

a. 2-pipe application:

1 supply riser with threaded ball valve stub-out

1 return riser with threaded ball valve stub-out

1 drain riser with copper stub-out

b. 4-pipe application:

2 supply riser with threaded ball valve stub-out

2 return riser with threaded ball valve stub-out

1 drain riser with copper stub-out

2. Measure the building’s floor-to-floor height and refer to

Table 5 for correct field supplied riser extension length

required.

Table 5 — Recommended Extension Length

3. Before cutting riser extensions, make sure the piece of

riser you are going to cut to make the extension matches

the riser diameter that was ordered with unit. All transi-

tion pieces like riser reducers are field supplied and

field installed.

4. Cut riser extensions using the recommended length from

Table 5.

5. Identify and orient each unit riser so the installer knows

which end is the top and which is the bottom. Use Fig. 48

and Table 6 for reference.

SIDE SUPPLY AIR

KNOCKOUT

1 PER SIDE

RISER KNOCKOUTS

4 PER SIDE,

EXCEPT ON

RETURN AIR SIDE

DRAIN KNOCKOUT

1 PER SIDE,

EXCEPT ON

RETURN AIR SIDE

OUTSIDE AIR

KNOCKOUT

2 SIDES ONLY,

ADJACENT TO

RETURN AIR

OPENING

SIDE VIEW

RETURN

AIR

OPTIONAL

ELECTRICAL

KNOCKOUTS

a42-4285

TOP SUPPLY

AIR KNOCKOU

TOP VIEW

ELECTRICAL

KNOCKOUTS

a42-4286

Fig. 45 — Locate 42SU Unit Knockouts

FLOOR-TO-FLOOR

DIMENSION (in.)

EXTENSION LENGTH

REQUIRED (in.)

102 26

104 28

106 30

KNOCKOUT

SLOT

KNOCKOUT

TAB

KNOCKOUT

TAB

DRAIN

KNOCKOUT

SUPPLY AND RETURN

a42-4309

Fig. 46 — Remove 42SU Unit Knockouts

DRAIN

INSULATION

CUT LINE

SUPPLY AND RETURN

INSULATION CUT LINE

a424287

Fig. 47 — 42SU Unit Knockout Insulation Removal

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 87 88

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Carrier 42C,V Manual de instalación Pagina 47

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