Carrier AQUASNAP 30RB060-390 Spécifications télécharger pdf (Page 36)

Step 2 — Remove Compressor Rack Holddown

Bolts —

The 30RB units are shipped with holddown bolts

securing the compressor rail assembly to the unit base frame.

These bolts are red and are located between the compressors in

the front and rear of the compressor rail assembly. These bolts

and holddown assemblies must be removed for the vibration

isolation system to operate properly. Using a 15mm socket,

loosen and remove the bolt and collar assembly as shown in

Fig. 26.

See Table 5 for the number of holddown assemblies for

each unit.

Isolation mounts for the compressor rail assembly are

located directly in front of and behind each compressor. Do

not loosen or remove the isolation mounts, only the shipping

bolts. There are 4 bolts that hold down each compressor. Do

not loosen these bolts.

Step 3 — Remove Compressor Shipping

Braces —

Each unit is equipped with compressor shipping

braces tying each circuit together. Prior to installation these

braces must be removed. Using a 15mm socket, loosen each

bolt and nut on each compressor tab and remove all braces be-

fore unit start-up. Remove the compressor shipping braces at-

tached between the compressors; see Fig. 27 for guidance.

FOR UNITS EQUIPPED WITH COMPRESSOR SOUND

BLANKETS — The sound blanket top covers are shipped in-

side the control box(es) for the unit. Remove the top covers

from the control boxes and install prior to start-up. Align the

discharge tube with the cutout on the top cover; see Fig. 28.

Firmly press the Velcro sections together, ensuring the top cov-

er is held tightly against the blanket.

Step 4 — Make Cooler Fluid, Heat Reclaim and

Drain Piping Connections —

To facilitate servicing,

it is recommended additional field-supplied air vents be in-

stalled. Locate air vents at the highest possible point of the

chilled water and heat reclaim systems. In addition to field-sup-

plied air vents, facilitate servicing in addition to flow balancing

by installing field-supplied shut-off valves, thermometers,

clean-out tees, pressure and temperature taps in the inlet and

outlet piping. Locate valves in return and supply cooler water

and heat reclaim lines as close to the chiller as possible.

In sound sensitive applications, consider the installation of

piping vibration isolators. Drain connections are provided in

the cooler. Refer to the dimensional drawings, Fig. 2-20 for lo-

cations. Insulate the drain piping (in the same manner as the

chilled water piping) for at least 12-in. (305 mm) from the

cooler.

FREEZE PROTECTION — Upon completion of the field

piping installation, freeze protection must be considered.

Freeze protection for the cooler is available from the factory

with a freeze protection option for the unit. Freeze protection

for the pump (hydronic) package is standard on all units with

the optional hydronic package (30RB060-190 units). External

piping freeze protection also must be considered. Since power

is sometimes lost for extended periods during winter storms,

freeze protection provided by heater tapes will be effective

only if a back-up power supply can be assured for the unit's

control circuit, heater and cooler pump. If not protected with

an antifreeze solution, draining the cooler and outdoor piping

is recommended if the system will not be used during freezing

weather conditions.

NOTE: See Freeze Protection section on page 50 for a more

detailed overview of freeze protection.

UNITS WITH HYDRONIC PUMP PACKAGE — The

30RB060-190 units can be equipped with a factory-installed

hydronic pump package consisting of a suction guide/strainer,

pump, combination valve, internal piping and wiring con-

nected at the factory.

BOLT

COLLAR

Fig. 26 — Compressor Rack Holddown Bolts

Table 5 — Number of Holddown Assemblies

UNIT

30RB

CIRCUIT

A + B

CIRCUIT

060-070 4

——

—

080-100 4

——

—

110-120 —2 4—

130-190 —4

—

210-300 —4

MODULAR

UNIT

30RB

CIRCUIT A CIRCUIT B

Module A Module B Module A Module B

315 4

330 4

345 4444

360 44

390 44

REMOVE

COMPRESSOR

SHIPPING

BRACES

Fig. 27 — Compressor Shipping Braces Removal

A30-5427

IMPORTANT: Glycol anti-freeze solutions are highly

recommended since heater tapes provide no protection

in the event of a power failure.

INSTALL

COMPRESSOR

SOUND BLANKET

TOP COVERS

Fig. 28 — Compressor Sound Blanket Top Covers

A30-5428

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 71 72

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Carrier AQUASNAP 30RB060-390 Spécifications Page 36

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