6
Safety precautions
Changes in DVM S (inverter) compare to conventional models that has to noted when installing
f For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (To not use
T-joint)
f You cannot operate normally if you do not complete the trial operation through outdoor unit key mode. You must use
KEY MODE to run trial operation.
f DVM S air conditioner uses R-410A refrigerant.
f Check the compatibility of other products such as indoor unit, EEV kits etc. which will be connected to DVM S.
f Make sure to note that outdoor unit combination is different from DVM PLUS III and IV.
f The length of maximum piping, level difference, the quantity of connectable indoor units, the installation at the outdoor
joints and the outdoor unit combinations are different from the conventional models.
f If the pipe length is over 2m(6.56ft) between outdoor units, make traps to prevent oil stagnation. Oil stagnation may
occur when outdoor unit at the end of module stops while other outdoor units are still in operation.
Preparing for installation
Outdoor unit classification
Classification Small type Large A type Large B type
Appearance
Models AM080/100/120✴✴✴
AM140/160/180/200/220✴✴✴,
AM220MXVAJC
AM220MXVAFC,
AM240/260/280/300✴✴✴
Packaging material disposition
t Safely store or dispose the packaging materials.
- Sharp metals such as nails or wooden material packaging that may break into pieces become a cause for
personal injury.
- Make sure to store or dispose the vinyl type packaging material to keep it out of reach of children. Children
may put them over their face, which is very dangerous since it may lead them to suffocation.
CAUTION
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