PREPARATION FOR USE
Electrical Connection
• For 120 V units :
MLS-3020U;
The unit should be connected to an appropriate receptacle that is rated 20A or greater.
MLS-2420U;
The units should be connected to an appropriate receptacle that is rated 12.5A or greater.
The receptacle should match the plug on the unit and be equipped with a ground circuit
breaker.
- For 208 V units :
The 208V version models are shipped without a plug on the power cord.
Use the power-plug which is applied CSA C22.2 No.42 or UL498, when the products is
set.
The protective grounding conductor of a power supply cord must be connected to the
contacting member of an attachmentplug.
rating :
Power cord
Wire size
Type
Plug
MLS-3020U
AWG12
MLS-2420U
AWG16
SJT
250VAC, 10A or greater
250VAC, 7.5A or greater
• For 230 V units :
The 230V version models are shipped without a plug on the power cord.
Use the power-plug which is applied IEC320 when the products is set.
The protective grounding conductor of a power supply cord must be connected to the con-
tacting member of an attachmentplug.
rating :
Power cord
Wire size
Plug
MLS-3020U
MLS-2420U
AWG16
250VAC, 10A or greater 250VAC, 7A or greater
Settings to match elevation of installation location
•Set the switch inside the main unit to match the elevation of
the installation location. (When the unit shipped from the
factory, it is set for an elevation of between 0 and less than
500
m.)
•If the switch setting needs to be changed, ask your dealer to
do it for you.
1,000-less than 2,000
500-less than 1,000
0-less than 500
L
(factory setting)
16