14 .Installation Details 
14.1Location selection 
14.1.1  Indoor unit location selection 
  The  place  shall  easily  support  the  indoor 
unit’s weight. 
  The  place  can  ensure  the  indoor  unit 
installation and inspection. 
  The  place  can  ensure  the  indoor  unit 
horizontally installed. 
  The place shall allow easy water drainage. 
  The  place  shall  easily  connect  with  the 
outdoor unit. 
  The  place where air  circulation in  the  room 
should be good. 
  There  should  not  be  any  heat  source  or 
steam near the unit. 
  There should not be any oil gas near the unit 
  There should not be any corrosive gas near 
the unit 
  There  should  not  be  any  salty  air  neat  the 
unit 
  There should not be strong electromagnetic 
wave near the unit 
  There  should  not  be  inflammable  materials 
or gas near the unit 
  There should not be strong voltage vibration. 
 
14.1.2  Outdoor unit location selection 
  The  place  shall  easily  support  the  outdoor 
unit’s weight. 
  Locate  the  outdoor  unit  as  close  to  indoor 
unit as possible 
  The  piping  length  and  height  drop  cannot 
exceed the allowable value. 
  The  place  where  the  noise,  vibration  and 
outlet air do not disturb the neighbors. 
  There  is  enough  room  for  installation  and 
maintenance. 
  The  air  outlet  and  the  air  inlet  are  not 
impeded, and not face the strong wind. 
  It is easy to install the connecting pipes and 
cables. 
  There is no danger of fire due to leakage of 
inflammable gas. 
  It should be a dry and well ventilation place 
  The support should be flat and horizontal 
  Do  not  install  the  outdoor  unit  in  a  dirty  or 
severely  polluted  place,  so  as  to  avoid 
blockage  of  the  heat  exchanger  in  the 
outdoor unit. 
  If  is  built  over  the  unit  to  prevent  direct 
sunlight, rain  exposure,  direct  strong wend, 
snow and other scraps accumulation, make 
sure that heat radiation from the condenser 
is not restricted.   
More than 30cm/11.81in
More than 60cm/23.62in
More than 200cm/78.74in
More than 30cm/11.81in
More than
60cm/23.62in
(Service space)
Fence or
obstacles
 
14.2 Indoor unit installation 
14.2.1 A6 Duct indoor unit installation 
14.2.1.1 Service space for indoor unit 
A6 Duct 
200mm(7.87in) or more
300mm(11.81in) or more
600mmx600mm/23.62inx23.62in
Check orifice
 
14.2.1.2 Bolt pitch 
 
Size of outline dimension 
mounted plug 
MTIU-09HWFN1-M/ 
MTIU-12HWFN1-M