Installation Diagram; Indoor Unit Installation; Pipe Forming And Drain Piping - Mitsubishi Electric MSZ-SF25VE3 Installation Manual

1-4. INSTALLATION DIAGRAM

ACCESSORIES
&KHFN WKH IROORZLQJ SDUWV EHIRUH LQVWDOODWLRQ
,QGRRU XQLW!
(1) ,QVWDOODWLRQ SODWH
,QVWDOODWLRQ SODWH ¿[LQJ VFUHZ
(2)
 î  PP
 :LUHOHVV UHPRWH FRQWUROOHU
Felt tape

(For left or left-rear piping)
(5) 5HPRWH FRQWUROOHU KROGHU
)L[LQJ VFUHZ IRU   × 16 mm
(6)
%ODFN
(7) %DWWHU\ $$$ IRU 
2XWGRRU XQLW!
(8) 'UDLQ VRFNHW 9( W\SH RQO\
PARTS TO BE PROVIDED
AT YOUR SITE
(A) ,QGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH 
(B) ([WHQVLRQ SLSH
(C) :DOO KROH VOHHYH
(D) :DOO KROH FRYHU
( 3LSH ¿[LQJ EDQG
(F) )L[LQJ VFUHZ IRU (  î  PP
(G) Piping tape
+ Putty
Drain hose
, RU VRIW 39& KRVH  PP LQQHU
GLDPHWHU RU KDUG 39& SLSH 93
(J) 5HIULJHUDWLRQ RLO
(K) 3RZHU VXSSO\ FRUG 
Note:
 3ODFH LQGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH $
and power supply cord (K) at least 1 m away
IURP WKH 79 DQWHQQD ZLUH
Units should be installed by licensed contrac-
tor according to local code requirements.
Appearance of the outdoor unit may differ from
some models.

2. INDOOR UNIT INSTALLATION

2-1. FIXING OF INSTALLATION PLATE
‡ )LQG D VWUXFWXUDO PDWHULDO VXFK DV D VWXG LQ WKH ZDOO DQG ¿[ LQVWDOODWLRQ SODWH  KRUL-
]RQWDOO\ E\ WLJKWHQLQJ WKH ¿[LQJ VFUHZV  ¿UPO\
‡ 7R SUHYHQW LQVWDOODWLRQ SODWH  IURP YLEUDWLQJ EH VXUH WR LQVWDOO WKH ¿[LQJ VFUHZV LQ WKH
KROHV LQGLFDWHG LQ WKH LOOXVWUDWLRQ )RU DGGHG VXSSRUW ¿[LQJ VFUHZV PD\ DOVR EH LQVWDOOHG
in other holes.
‡ :KHQ WKH NQRFNRXW LV UHPRYHG DSSO\ YLQ\O WDSH WR WKH NQRFNRXW HGJHV WR SUHYHQW GDPDJ-
ing the wires.
‡ :KHQ EROWV UHFHVVHG LQ WKH FRQFUHWH ZDOO DUH WR EH XWLOL]HG VHFXUH LQVWDOODWLRQ SODWH 
XVLQJ  î   î  RYDO KROH  PP SLWFK 
‡ ,I WKH UHFHVVHG EROW LV WRR ORQJ FKDQJH LW IRU D VKRUWHU RQH DYDLODEOH LQ WKH PDUNHW
2-2. WALL HOLE DRILLING
1) Determine the wall hole position.
2) Drill a ø65 mm hole. The outdoor side should be
5 to 7 mm lower than the indoor side.
 ,QVHUW ZDOO KROH VOHHYH & 
,QVWDOODWLRQ SODWH 
/HYHO
mm
107.5
or more
:DOO
)L[LQJ
screw (2)
3RVLWLRQ RI WKH XQLRQ MRLQWV
 PP ORQJHU IRU  (1
2-3. CONNECTING WIRES FOR INDOOR UNIT
<RX FDQ FRQQHFW LQGRRURXWGRRU OHDG ZLUH ZLWKRXW UHPRYLQJ WKH IURQW SDQHO
1) Open the front panel.
 5HPRYH 9$ FODPS
 3DVV LQGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH $ IURP WKH EDFN RI WKH LQGRRU XQLW DQG SURFHVV
the end of the wire.
1
5
1
1
1
2
2
1
1
1
1
1
2 to 5
2 to 5
6)  6)
1
  PP RU PRUH ZKHQ IURQW
1
and sides of unit are clear
1 or 2
1
1
 :KHQ DQ\  VLGHV RI OHIW ULJKW DQG UHDU RI XQLW DUH FOHDU
 7KH PDQXIDFWXULQJ \HDU DQG PRQWK LV LQGLFDWHG RQ WKH
spec name plate.
:DOO
ø65 mm
Ceiling
72 mm or more
115 mm or more for left and left
EDFN SLSLQJ XVLQJ VSDFHU
117.5
or more
100 mm
,QVHUW Align the
Center of
the scale with
ø65 mm hole
VFDOH WKH OLQH
6DPH IRU OHIW KROH
Be sure to use wall hole
sleeve (C) to prevent in-
door/outdoor connecting
wire (A) from contacting
metal parts in the wall
and to prevent damage by
rodents in case the wall
is hollow.
$IWHU WKH OHDN WHVW DSSO\
insulating material tightly so
that there is no gap.
:KHQ WKH SLSLQJ LV WR EH
attached to a wall containing
metals (tin plated) or metal
*4
netting, use a chemically
treated wooden piece 20
PP RU WKLFNHU EHWZHHQ WKH
wall and the piping or wrap
7 to 8 turns of insulation vinyl
tape around the piping.
7R XVH H[LVWLQJ SLSLQJ SHU-
IRUP &22/ RSHUDWLRQ IRU
 PLQXWHV DQG SXPS GRZQ
before removing the old air
FRQGLWLRQHU 5HPDNH ÀDUH
according to the dimension
for new refrigerant.
*4
 /RRVHQ WHUPLQDO VFUHZ DQG FRQQHFW ¿UVW WKH HDUWK ZLUH WKHQ LQGRRURXWGRRU XQLW FRQ-
QHFWLQJ ZLUH $ WR WKH WHUPLQDO EORFN %H FDUHIXO QRW WR PDNH PLVZLULQJ )L[ WKH ZLUH WR
WKH WHUPLQDO EORFN VHFXUHO\ VR WKDW QR SDUW RI LWV FRUH LV DSSHDUHG DQG QR H[WHUQDO IRUFH
LV FRQYH\HG WR WKH FRQQHFWLQJ VHFWLRQ RI WKH WHUPLQDO EORFN
5) Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull
WKH ZLUHV OLJKWO\ WR FRQ¿UP WKDW WKH\ GR QRW PRYH
 6HFXUH LQGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH $ DQG WKH HDUWK ZLUH ZLWK WKH 9$ FODPS
1HYHU IDLO WR KRRN WKH OHIW FODZ RI WKH 9$ FODPS $WWDFK WKH 9$ FODPS VHFXUHO\
7HUPLQDO EORFN
15 mm
5-7 mm
 PP
Outdoor
side
/HDG ZLUH
‡ )RU IXWXUH VHUYLFLQJ JLYH H[WUD OHQJWK WR WKH
connecting wires.
‡ 0DNH HDUWK ZLUH D OLWWOH ORQJHU WKDQ RWKHUV
mm
0RUH WKDQ  PP
‡ 'R QRW IROG WKH H[FHVV ZLUH RU FUDP LW LQWR
VPDOO VSDFH 7DNH FDXWLRQ QRW WR GDPDJH WKH
:DOO
wires.
‡ %H VXUH WR DWWDFK HDFK VFUHZ WR LWV FRUUH-
spondent terminal when securing the cord
DQGRU WKH ZLUH WR WKH WHUPLQDO EORFN
Note: Do not place the wires between the
indoor unit and the installation plate (1).
Damaged wire could cause heat generation
RU ¿UH

2-4. PIPE FORMING AND DRAIN PIPING

Pipe Forming
‡ 3ODFH WKH GUDLQ KRVH EHORZ WKH UHIULJHUDQW SLSLQJ
‡ 0DNH VXUH WKDW WKH GUDLQ KRVH LV QRW KHDYHG RU VQDNHG
‡ 'R QRW SXOO WKH KRVH ZKHQ DSSO\LQJ WKH WDSH
‡ :KHQ WKH GUDLQ KRVH SDVVHV WKH URRP EH VXUH WR ZUDS
insulation material (obtainable at a store) around it.
,QGRRU XQLW
:DOO KROH
sleeve (C)
Cut off the
H[WUD OHQJWK
Outdoor unit installation
150/175
mm
2-10 mm × 21 mm slot
Drain piping for outdoor unit
<VE type only>
‡ 3URYLGH GUDLQ SLSLQJ EHIRUH LQGRRU DQG
outdoor piping connection.
‡ &RQQHFW GUDLQ KRVH , ,' PP DV
shown in the illustration.
‡ 0DNH VXUH WR SURYLGH GUDLQ SLSLQJ ZLWK D
GRZQKLOO JUDGH IRU HDV\ GUDLQ ÀRZ
Note:
,QVWDOO WKH XQLW KRUL]RQWDOO\
'R QRW XVH GUDLQ VRFNHW  LQ FROG
UHJLRQV 'UDLQ PD\ IUHH]H DQG PDNH
(8)
,
the fan stop.
The outdoor unit produces condensate
during the heating operation. Select the
installation place to ensure to prevent
the outdoor unit and/or the grounds from
being wet by drain water or damaged by
frozen drain water.
(DUWK ZLUH
(green/yellow)
,QGRRURXWGRRU XQLW
connecting wire (A)
)HOW WDSH 
Piping tape (G)
:DOO KROH FRYHU '
Seal the wall hole gap
ZLWK SXWW\ + 
)L[ WKH SLSH WR ZDOO
ZLWK SLSH ¿[LQJ EDQG
( 
3LSH ¿[LQJ EDQG
(
)L[LQJ VFUHZ
(F)
6)  6)
 PP
500 mm
Air inlet
Air outlet
 PP
9$ FODPS
)L[LQJ VFUHZ
,QGRRURXWGRRU XQLW
connecting wire (A)
,QGRRU WHUPLQDO EORFN
2XWGRRU WHUPLQDO EORFN
/LTXLG SLSH
Gas pipe
,QGRRURXWGRRU XQLW
connecting wire (A)