Danfoss PSH019, Инструкции по применению, Страница: 11 / 44

Electrical data, connections and wiring
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.
Connection Details
PSH019-023-026-030-034-039
Bare compressor version Full package version
Suction and discharge connections Brazed Brazed
Oil sight glass Threaded Threaded
Oil equalization connection Rotolock 1”3/4 Rotolock 1”3/4
Oil drain connection none none
Low pressure gauge port (shrader) ¼” flare ¼” flare
Liquid Injection valve connection none 5/16”ODF
Brazed version
Tube ODF
PSH019
Suction 1”1/8
Discharge 7/8”
PSH023-026-030-034-039
Suction 1”3/8
Discharge 7/8”
Suction and discharge
connections
Oil sight glass
Oil equalisation
connection
PSH019-023-026-030-034-039 are equipped
with a 1”3/4 rotolock connector allowing the
use of 1”3/4 - 7/8” or 1”3/4 - 1”1/8 sleeve. This connection must be used to mount the oil
equalisation line when two or more compressors
are mounted in parallel.
The oil fill connection and gauge port is a 1/4”
male flare connector incorporating a Schrader
valve.
Schrader
Liquid injection valve
The liquid injection valve comes equipped
with process tube, maintained by a bracket,
assembled on compressor shell. This process tube
is to be connected with a 5/16” piping.
Danfoss PSH scroll compressor is optimized
for heat pump applications. Scroll elements
pressure ratio optimization and liquid injection
management system is developed for extreme
conditions running.
PSH Scroll compressor is also equipped
with several pre-wired devices that enhance
compressor reliability.
Liquid injection is controlled by discharge gas
temperature sensor plugged to the control board
placed in the terminal box.
Note: PSH bare compressor version is not
equipped with liquid injection valve.
Coil
Support brackets
Pipe OD
diameter 5/16”
Liquid Injection
Valve (LIV)
Process tube
Terminal box with
control board
Liquid injection
auto control
11
FRCC.PC.022.A4.02
Application Guidelines