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3
2.
Front (blowing) side open
As long as space like the one
showninthegurecanbe
maintained, it does not mat-
ter
if there are obstacles in
three directions (but top side
isopen).
4.
Obstacles on front and rear side only
Theunitcanbeusedbyat-
taching an optional outdoor
blowingguide(MAC-889SG)
(but both sides and top are
open).
1-4.SELECTINGPIPESIZEANDOPTIONALDIFFERENT-DIAMETERJOINTS
Thediameterofconnectionpipesdiffersaccordingtothetypeandcapacityofindoorunits.Matchthediametersofconnectionpipesforindoorandoutdoor
units according to the following table.
• If the diameter of connection pipes does not match the diameter of pipe end connections, use optional different-diameter joints.
[inch(mm)]
Outdoor unit
Indoor unit
09 or less/12 15
Pipe
size
(liquid/gas)
1/4(6.35)/3/8(9.52) 1/4(6.35)/1/2(12.7)
A UNIT
1/4(6.35)/3/8(9.52) - / - - / MAC-454JP
B UNIT
FREE SPACE REQUIRED AROUND OUTDOOR UNIT
1-5. SELECTING THE INSTALLATION LOCATION
• Where it is not exposed to strong wind.
• Whereairowisgoodanddustless.
• Where rain or direct sunshine can be avoided as much as possible.
• Whereneighboursarenotannoyedbyoperationsoundorhotair.
• Where rigid wall or support is available to prevent the increase of op
-
eration
sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit at a high level, be sure to secure the unit legs.
• Whereitisatleast9.84ft(3m)awayfromtheantennaofTVsetor
radio.OperationoftheairconditionermayinterferewithradioorTVre
-
c
eptioninareaswherereceptionisweak.Anampliermayberequired
for the affected device.
• Installtheunithorizontally.
• Pleaseinstallitinanareanotaffectedbysnowfallorblowingsnow.
Inareaswithheavysnow,pleaseinstallacanopy,apedestaland/or
somebafeboards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce
vibration transmitted from there.
Note:
When
operating the air conditioner in low outside temperature, be sure
to follow the instructions described below.
• Never install the outdoor unit in a place where its air inlet/outlet side
maybeexposeddirectlytowind.
• To prevent exposure to wind, install the outdoor unit with its air inlet
side facing the wall.
•
To prevent exposure to wind, it is recommended to install a baffle
board on the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble
is liable to occur.
• Whereammablegascouldleak.
• Where there is much machine oil.
• Saltyplacessuchastheseaside.
• Wheresuldegasisgeneratedsuchasahotspring.
• Wherethereishigh-frequencyorwirelessequipment.
Blowingguide(MAC-889SG)
4in.(100mm)
or more
20in.(500mm)
or more
Service space
• When installing the unit in an area that is enclosed on four sides such
asaverandah,besuretoleavemovethan8in.(200mm)behindthe
unit as shown.
• When thereis alack ofairow orthere is a possibility ofbecoming
short cycle, install an outletguide and makesure there is enough
space behind the rear side of the air inlet.
Note:
Make
surenottoinstallseveraloutdoorunitssidewaysnexttoeach
other.
Window
More than 4 in.
(100mm)
Lessthan48in.(1,200mm)ofthefrontsurface
side
1.
Top side obstacles
When there is an obstacle
behindtherearsideonly,itdoes
not matter if there is an obstacle
over the top side as shown in the
gurebelow.
3.
Obstacles on front (blowing) side only
In this case, the rear, both sides
and top should be open.
5.
Service space
Keeptheservicespaceasshowninthegurebelowformainte-
nance.
4in.(100mm)
or more
20in.(500mm)
or more
14in.(350mm)ormore
20in.(500mm)
or more
4in.(100mm)
or more
20in.(500mm)
or more
4in.(100mm)
or more
14in.(350mm)
or more
8in.(200mm)
or more
4in.(100mm)
or more
20in.(500mm)
or more
More than 8 in.
(200mm)
More than 8 in.
(200mm)
More than 14 in.
(350mm)
More than 8 in.
(200mm)
JG79A253H04_en.indd 3 2014/03/10 14:12:55
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