User Guide

Application guidelines
16 AB237986441643en-US0701
The terminal box is provided with a Ø 1" and a
Ø 1.14" knockouts.
Motor voltage
Wiring connections
Danfoss SM / SY / SZ scroll compressors are available in ve dierent motor voltages.
Electrical power is connected to the compressor terminals by Ø 3/16" (4.8 mm) screws. The maximum
tightening torque is 2.2ft.lb. Use a 1/4" ring terminal on the power leads.
The terminal box is provided with 2 double
knockouts for the power supply and 3 knockouts
for the safety control circuit.
The 2 power supply, double knockouts
accommodate the following diameters:
Ø 1"3/4 hole (for a 1"1/4 conduit) and Ø 1"3/8
hole (for a 1" conduit),
Ø 1.26" hole & Ø 1" hole
The 3 other knockouts are as follows:
Ø 0.81"
Ø 7/8" (for a 1/2" conduit)
Ø 0.65"
SM / SZ 084 - 090 - 100 - 110
- 112 - 120 - 124 - 147* -148*
- 161*
*Except for motor voltage
code 3
SM / SZ 148 & 161 code 3-175-
185 & SY185 - R & C version
The terminal box is provided with a Ø 1.59" hole
for power supply and a Ø 0.65" knockout.
SM/SZ 147 code 3
Terminal box
Ø 1 inch knockout
Power supply
Ø 1.14 inch knockout
Ø 1.59” hole
Ø 0.65”
knockout
Power supply
Cover holding screw (x2) - Torque: 1.6 ft.lb
Faston 1/4" tabs
Terminal box
Power supply
Sump heater
Motor voltage
code 3
Motor voltage
code 4
Motor voltage
code 6
Motor voltage
code 7
Motor voltage
code 9
Nominal voltage
50 Hz
-
380 - 400 V - 3 ph
380 - 415 V - 3 ph*
230 V - 3 ph 500 V - 3 ph -
Voltage range
50 Hz
-
342 - 440 V
342 - 457 V *
207 - 253 V 450 - 550 V -
Nominal voltage
60 Hz
200 - 230 V - 3 ph 460 V - 3 ph - 575 V - 3 ph
380 V - 3 ph
380 - 400 V - 3 ph*
Voltage range
60 Hz
180 - 253 V 414 - 506 V - 517 - 632 V
342 - 418 V
342 - 440 V*
* SY 380
Electrical data, connections and wiring