Carrier 5H - Manual (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
Ì
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.