Application guidelines
13
FRCC.PC.021.A5.22
Electrical data, connections and wiring
PSH051-064-077
AJ-AK
Suction and discharge connections
Brazed
Oil sight glass
Threaded
Oil equalization connection
Rotolock 2"1/4
Oil drain connection
1/4" SAE flare
Low pressure gauge port (schrader)
1/4" SAE flare
Liquid Injection Valve connection tube
1/4"ODF
Tube ODF
PSH051-064-077
Suction
1"5/8
Discharge
1"1/8
Suction and discharge
connections
Oil sight glass
Oil equalisation connection
Oil drain connection
Schrader
Liquid injection valve
All Danfoss PSH scroll compressors come
equipped with a sight glass (1"1/8 - 18 UNF)
which may be used to determine the amount and
condition of the oil contained within the sump.
PSH051-064-077 are equipped with a 2"1/4
rotolock connector allowing the use of 2"1/4
- 1"3/8 or 2"1/4 - 1"5/8 sleeve. This connection
must be used to mount the oil equalisation line
when two or more compressors are mounted
in parallel (please refer to section ”Parallel
mounting” for details).
The oil drain connection allows oil to be removed
from the sump for changing, testing, etc. The
fitting contains an extension tube into the oil
sump to more effectively remove the oil. The
connection is a female 1/4" SAE flare fitting
The oil fill connection and gauge port is a 1/4"
male flare connector incorporating a Schrader
valve.
The liquid injection valve (LIV) comes equipped
with process tube, maintained by a bracket,
assembled on compressor shell. This process
tube is to be connected with a 1/4" piping to the
system liquid line.
During commissioning, check that the LIV coil is
correctly positioned on the LIV body. One of the
lock pins on the coil must fit into one of the dents
on the valve body.
Connection details
1/4"
Process tube
Support bracket
Liquid Injection Valve (LIV)
Coil
