Carrier 42C,V Manual de instalación descargar pdf (Pagina 49)

which the system will be subjected. Low temperature lead al-

loy solders such as “50/50” and “60/40” are normally not suit-

able.

Riser to Drain Installation

1. After the applicable supply, return, and drain knockouts

have been removed, carefully position the unit so that the

riser ball valves penetrate into the unit through the riser

knockouts making sure the insulation penetrates into the

unit as shown in Fig. 50-53.

2. Before anchoring the equipment in place, the unit must be

leveled and the cabinet must be plumb and squared. The

unit may be anchored in place by bolting directly through

the unit floor or attaching to the cabinet in some location

that will not interfere with drywall or other items such as

the supply grille, thermostat, or return access panel.

When attaching to the unit cabinet, care must be taken to

not penetrate the cabinet in locations that may damage in-

ternal components or wiring. The mounting technique is a

matter of choice; however, the unit should always be an-

chored securely to prevent movement during construction

and riser expansion and contraction. After anchoring the

unit, it is then ready for the various service connections

such as riser connections and electrical.

3. The plastic flare caps on the end of the riser ball valves

should be removed and discarded.

4. All universal stack units use reinforced braided stainless

steel flexible hose kits for piping between field-installed

risers and unit water coils as shown in Fig. 51. The hose

kit design has threaded connections on each end. The

hose kits allow for riser fluctuations due to thermal

expansion.

5. Use a wrench to tighten the swivel connections. Use a

backup wrench to hold the riser ball valve stationary to

prevent it from bending or twisting during installation as

shown in Fig. 52. Be careful to not over tighten swivel

connections.

6. Locate the unit’s coil fitting.

7. The plastic flare caps on the end of the coil fitting should

be removed and discarded.

8. Use a wrench to tighten the swivel connections. The baf-

fle acts as a secondary wrench. Be careful to not over

tighten swivel connections.

9. Locate the p-trap drain and rubber hose factory installed

to the drain pan connection in the bottom of the unit as

shown in Fig. 53.

10. Push the rubber drain hose over the riser drain stubout. Be

careful not to bend the drain stubout.

11. Adjust the hose clamp over the riser stubout and rubber

hose to hold in place as shown in Fig. 53.

12. Test for leaks. Any and all leaks should be repaired before

proceeding with installation. When testing with air or

some other gas, it might be necessary to tighten stem

packing nuts on some valves to maintain air pressure in

the riser. Pressure testing risers with water should be done

with the unit service valves closed to prevent flushing

FLARE CAP

BALL

VALVE

RISER STUBOUT

INSULATION

THREADED

FLARE FITTING

UNIT INSULATION

OUTER

CABINET

RISER KNOCKOUT

SLOT

a42 4288

Fig. 50 — 42SU Unit Riser to Unit Installation

Setup

FLEXIBLE

HOSE KIT

RISER

BALL

VALVE

RISER STUBOUT

INSULATION

CONNECTION POINT TO ANY FACTORY

FURNISHED AND INSTALLED

COMPONENTS.

COIL

BAFFLE

Fig. 51 — 42SU Unit Riser to Unit Installation

a42-4289

CAUTION

Hose connection torque requirements are 350 in. lb +10/

–0 in. lb to prevent leaks.

CAUTION

Hose connection torque requirements are 350 in. lb +10/

–0 in. lb to prevent leaks.

BACKUP

WRENCH

BALL

VALVE

WRENCH

SWIVEL

CONNECTION

Fig. 52 — 42SU Unit Riser to Unit Installation

(Tighten Swivel Connections)

a42-4290

DRAIN PAN

DRAIN

CLAMP

RISER KNOCKOUT

UNIT INSULATION

PTRAP

UNIT WALL

RISER

RISER STUBOUT

a42-4291

Fig. 53 — 42SU Unit Riser to Drain Installation

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 87 88

Comentarios a estos manuales

Sin comentarios

Carrier 42C,V Manual de instalación Pagina 49

Comentarios a estos manuales

Relacionado con productos y manuales para Acondicionadores de aire del sistema de división Carrier 42C,V