Danfoss R22 User Manual

Electrical data, connections and wiring
Compressor models SM / SZ 175 – 185 R and C version
Legends
Compressor models SY / SZ 240 - 300 - 380
Compressor models SM/SZ175-185 (J, K, P, S, U, W, X, Y versions)
Fuses F1
Compressor contactor KM
Control relay KA
Safety lock out relay KS
Optional short cycle timer (3 min) 180 s
External overload protection F2
Pump-down pressure switch LP
High pressure safety switch HP
Control device TH
Liquid Line Solenoid valve LLSV
Discharge gas thermostat DGT
Fused disconnect Q1
Motor safety thermostat thM
Compressor motor M
Motor Protection Module MPM
Thermistor chain S
Safety pressure switch LPS
CONTROL CIRCUIT
F1
F1
KA KAKA
HP
LPS
T1
T2
T3
KM
DGT
KS
KS
1
2
M
ThM
KS
KS
KA
KM
KM
LLSV
180s
TH
F2
Q1
L1 L3 L2
A1
A2
A3
Wiring diagram with pump-down cycle
LP
CONTROL CIRCUIT
F1
F1
KA
KA
KA
HP
T1
T2
T3
KM
DGT
KS
KS
1
2
TH
KS
LPS
KA
KM
180s
F2
Q1
L1 L3 L2
M
ThM
A1
A2
A3
Wiring diagram without pump-down cycle
A1
A3
A2
MPM
S
LPS
Wiring diagram with pump-down cycle
LP
A1
A3
A2
MPM
S
KS
Wiring diagram without pump-down cycle
LPS
A1
A3
A2
LP
LPS
MPM
12 14
11 N
2 1
L1
S
Wiring diagram with pump-down cycle
A1
A3
A2
LPS
MPM
12 14
11 N
2 1
L1
Wiring diagram without pump-down cycle
Application guidelines
20
FRCC.PC.003.A5.22

Danfoss R22 Specifications

General

Brand	Danfoss
Model	R22
Category	Air Compressor
Language	English