Carrier 5H User Manual download pdf (Page 8)

Oil Filter should be replaced after 50 hours opera

tion and whenever oil is changed or becomes dirty.

Oil Separator (Optional) - Install separator so its

weight is carried by supports or hangers and not

piping.

Connect separator inlet to compressor dis

charge and separator outlet to condenser. Con

nect oil return line (1/4-inch or 3/8-inch copper

tubing) between separator and compressor crank

case. Make line long enough to be flexible and free

from strain. Connect oil return line to upper oil

and gas equalizer line connection (if available) on

compressor. When two compressors are installed

in parallel, connect oil return line to oil equalizer

line between the two compressors. Install shut

off valve in oil return line to facilitate service and

minimize refrigerant loss.

An additional oil charge is required when an

oil separator is used. Watch oil level and check

separator float valve operation during initial

compressor operation. Follow instructions fur

nished with oil separator.

Compressor Muffler (Optional) - Mufflers are in

cluded in condenser piping packages for all 5H

condensing units. They are recommended for all

remote installations. Install mufflers either hori

zontally or vertically (refrigerant flow downward).

Arrow on muffler indicates flow direction. Place

outlet at bottom in horizontal installations to pre

vent trapping oil. Locate muffler as close as pos

sible to compressor.

Special Handhole Cover Plates (Optional) have

tapped holes for connecting equalizer lines. When

operating compressors in parallel, replace stan

dard covers with special covers. See Fig. 13.

5H120 AND 126 - Tapped cover plate is standard

on 5H120 and 126 compressors. Use only lower

connection for oil equalization. Connect gas equal-

GAS EQUALIZER ■

CpiMNECTION - j . .

|| OD FLANGE --CC

OIL EQUALIZER

CONNECTION

I" IPS .-.1 i

Fig. 14- Equalizer Connections

(5H120 and 126)

ization line at flange connection. See Fig. 14.

Mating flange for 1-1/8 inch OD is Mueler part

no. A-515; gasket no. A-5152.

5F20 AND 30 compressors have no special tapped

cover plate. Use opening for oil sight glass with

1-1/8-inch line for gas and oil equalization. For

additional equalization, run a 3/8-inch line to oil

fill plug. See Fig. 15.

GAS

EQUALIZER

CONNECTION

OIL

EQUALIZER

CONNECTION

Fig. 13 - Special Handhole Cover

with Equalizer Connections

Cooled Heads - When used, install water-cooled

heads and piping as shown in Fig. 16.

5F20,30,40,60; 5H40,46,60,66,80 AND 86 com

pressors have one water circuit piped to flow in

either direction. See Fig. 16.

5H120 AND 126 compressors have two parallel

circuits with two 1/2-inch IPS water inlet con

nections and one 1/2-inch IPS water outlet con

nection. See Fig. 16.

Install manually operated valve in each water

circuit, adjusted for 100 F maximum leaving water

temperature.

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Carrier 5H User Manual Page 8

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