Before Installation - Mitsubishi Electric MXZ-2C20NA4 Installation Manual

C O N T E N T S
1 . B EFO R E IN S T A L L A T IO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 . O U T DO O R U N IT IN S T A L L A T IO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 . FL A R IN G W O R K A N D P IP E CO N N ECT IO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 . P U R GIN G P R O CEDU R ES , L EA K T ES T , A N D T ES T R U N . . . . . . . . . 6
5 . P U M P IN G DO W N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1 . B E F O R E I N S T A L L A T I O N
1 - 1 . T H E F O L L O W I N G
• B e s u r e t o r e a d " T HE FO L L O W IN G S HO U L D A L W A Y S B E O B S ER V ED FO R S A FET Y " b e f o r e i n s t a l l i n g t h e a i r c o
• Be sure to observe the warnings and cautions specified here as they include important items related to safety.
• A f t e r r e a d i n g t h i s m a n u a l , b e s u
I D o no t i ns t a l l t h e u ni t b y y o u r s el f ( u s er ) .
Incomplete installation could cause fire or electric shock, injury due to the unit
f a l l i n g , o r l e a k a g e o f w a t e r . Co n s u
unit or a qualified installer.
I F o l l o w
t h e i ns t r u c t i o ns d et a i l ed i n t h e i ns t a l l a t i o n m a nu a l .
Incomplete installation could cause fire or electric shock, injury due to the unit
f a l l i n g , o r l e a k a g e o f w a t e r .
I W h en i ns t a l l i ng t h e u ni t , u s e a p p r o p r i a t e p r o t ec t i v e eq u i p m ent a nd t o o l s
en
f o r s a f et y .
Fa i l u r e t o d o s o c o u l d c a
I I ns t a l l t h e u ni t s ec u r el y i n a p l a c e t h a t c a n b ea r t h e w ei g h t o f t h e u ni t .
If t h e i n s t a l l a t i o n l o c a
c a u s i n g i n j u r y .
I P er f o r m el ec t r i c a l w o r k a c c o r d i ng t o t h e i ns t a l l a t i o n m a nu a l a nd b e s u r e t o u s e
a n ex c l u s i v e c i r c u i t . D o no t c o nnec t o t h er el ec t r i c a l a p p l i a nc es t o t h e c i r c u i t .
If the capacity of the power circuit is insufficient or there is incomplete electrical
work, it could result in a fire or an electric shock.
I G r o u nd t h e u ni t c o r r ec t l y .
Do n o t c o n n e c t t h e g r o u n d w i r e t o a g a s p i p e , w a t e r p i p e , l i g h t n i n g r o d o r
telephone ground. Defective grounding could cause electric shock.
I D o no t d a m a g e t h e w i r es .
Damaged wires could cause fire.
I B e s u r e t o s h u t o f f t h e m a i n p o w er w h en s et t i ng u p t h e i nd o o r P . C . b o a r d
o r w i r i ng .
Fa i l u r e t o d o s o c o u l d c a
I Use the specified wires to securely connect the indoor and outdoor units.
Attach the wires firmly to avoid applying stress to the terminal block.
Improper connection could cause fire.
I Do not install the unit in a place where flammable gas may leak.
If g a s l e a k s a n d a c c u
I D o no t u s e i nt er m ed i a t e c o nnec t i o n o f t h e p o w er c o r d o r t h e ex t ens i o n
c o r d . D o no t c o nnec t m a ny d ev i c es t o o ne A C o u t l et .
It could cause a fire or an electric shock.
I Use the parts provided or specified parts for the installation work.
The use of defective parts could cause an injury or leakage of water due to a
fire, an electric shock, the unit falling, etc.
I W h en p l u g g i n g t h e p o w e r s u p p l y p l u g i n t o t h e o u t l e t , m a k e s u r e t h a t t h e r e
i s no d u s t , b l o c k a g e, o r l o o s e p a r t s b o t h i n t h e o u t l et a nd o n t h e p l u g .
V er i f y t h a t t h e p o w er s u p p l y p l u g i s c o m p l et el y i n t h e o u t l et .
If t h e r e i s d u s t , b l o c k a
it could cause electric shock or fire. If loose parts are found on the power supply
p l u g , r e p l a c e i t .
I P er f o r m t h e d r a i na g e/ p i p i ng w o r k s ec u r el y a c c o r d i ng t o t h e i ns t a l l a t i o n m a nu a l .
If t h e r e i s d e f e c t i n t h e d r a i n a g e / p i p i n g w o r k ,
a n d d a m a g e h o u s e h o l d i t e m s .
I Do not touch the air inlet or the aluminum fins of the outdoor unit.
T h i s c o u l d c a u s e i n j u r y .
I D o no t i ns t a l l t h e o u t d o o r u ni t w h er e s m a l l a ni m a l s m a y l i v e.
If s m a l l a n i m a l s e n t e r t h e u n i t a n d d a m a g e i t s e l e c t r i c a
malfunction, smoke emission, or fire. Keep the area around the unit clean.
I W h en t h er e a r e t h e p o r t s w h i c h a r e no t u s ed , m a k e s u r e t h ei r nu t s a r e
t i g h t ened s ec u r el y .
1 - 2 . S P E C I F I C A T I O N S
M o d e l
R a t e d V o l t a g e
M X Z - 2 C2 0 N A 4
*1 Never use pipes with thickness less than specified. The pressure resistance
will be insufficient.
* 2 U s e a c o p p e r p i p e o r a c o
* 3 B e c a r e f u l n o t t o c r u s h
* 4 R e f r i g e r a n t p i p e b e n d i n g r a d i u s m u s t
*5 Insulation material : Heat resisting foam plastic 0.045 specific gravity
*6 Be sure to use the insulation of specified thickness. Excessive thickness may
cause incorrect installation of the indoor unit and insufficient thickness may
c a u s e d e w d r i p p a g e .
1
S H O U L D A L W A Y S B E O B S E R V E D F O R S A F E T Y
r e t o k e e p i t t o g e t h e r w i t h t h e O P ER A T IN G IN S T R U CT IO N S f o r f u t u r e r e f e r e n c e
l t t h e d e a l e r f r o m w h o m
u s e i n j u r y .
t i o n c a n n o t b e a r t h e w e i g h t o f t h e u n i t , t h e u n i t c o
u s e e l e c t r i c s h o c k .
m u l a t e s a r o u n d t h e u n i t , i t c o u l d c a u s e
g e , o r l o o s e p a r t s o n t h e p o w e r s u p p l y p l u g o r t h e o u t l e t ,
w a t e r c o u l d d r i p f r o m
l p a r t s , i t c o
P o w e r s u p p l y
M a x . p i p e l e n g t h p e r i n d o o r u n i t /
Fr e q u e n c y
2 0 8 / 2 3 0 V 6 0 Hz 8 2 f t . (2 5 m ) / 1 6 4 f t . (5 0 m )
p p e r - a l l o y s e a m l e s s p i p e .
o r b e n d t h e p i p e d u r i n g p i p e b e n d i n g .
b e 4 i n . (1 0 0 m m ) o r m o r e .
Phillips screwdriver
Level
S c a
U t i l i t y k n
T o r q u e w r e n c h
W r e n c h
WARNING
(Co u l d l e a d t o d e a t h o r s e
I S ec u r el y a t t a c h t h e el ec t r i c a l c o v er t o t h e i nd o o r u ni t a nd t h e s er v i c e
p a nel t o t h e o u t d o o r u ni t .
If the electrical cover of the indoor unit and/or the service panel of the outdoor
y o u p u r c h a s e d t h e
u n i t a r e n o t a t t a c h
could cause a fire or an electric shock.
I W h en i n s t a l l i n g , r e l o c a t i n g , o r s e r v i c i n g t h e u n i t , m a k e s u r e t h a t n o s u b s t a n c e
other than the specified refrigerant (R410A) enters the refrigerant circuit.
A n y p r e s e n c e
r i s e a n d m a y r e s u
that specified for the system will cause mechanical failure, system malfunction,
o r u n i t b r e a k d
u l d f a l l t o s e c u r i n g p r o d u c t
I D o no t d i s c h a r g e t h e r ef r i g er a nt i nt o t h e a t m o s p h er e. C h ec k t h a t t h e
r ef r i g er a nt g a s d o es no t l ea k a f t er i ns t a l l a t i o n h a s b een c o m p l et ed . I f
r ef r i g er a nt l ea k s d u r i ng i ns t a l l a t i o n, v ent i l a t e t h e r o o m .
If refrigerant comes in contact with a fire, harmful gas could be generated.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan
heater, space heater, stove, etc., harmful gases will be generated.
I U s e a p p r o p r i a t e t o o l s a nd p i p i ng m a t er i a l s f o r i ns t a l l a t i o n.
T h e p r e s s u r e o f R 4 1 0 A i s 1 . 6 t i m e s h i g h e r t h a n R 2 2 . N o t u s i n g t h e a p p r o p r i -
a t e t o o l s a n d m a t e r i a l s , o r i m p r o p e r i n s t a l l a t i o n c o
c a u s i n g a n i n j u r y .
I W h en p u m p i n g d o w n t h e r e f r i g e r a n t , s t o p t h e c o m p r e s s o r b e f o r e d i s c o n-
nec t i ng t h e r ef r i g er a nt p i p es .
If t h e r e f r i g e r a n t p i p e s a r e d i s c o
the stop valve is open, air could be drawn in and the pressure in the refrigera-
t i o n c y c l e c o
I W h en i ns t a l l i ng t h e u ni t , s ec u r el y c o nnec t t h e r ef r i g er a nt p i p es b ef o r e
s t a r t i ng t h e c o m p r es s o r .
a n e x p l o s i o n . If t h e c o m p r e s s o
stop valve is open, air could be drawn in and the pressure in the refrigeration
c y c l e c o u l d b e c o
I Fasten a flare nut with a torque wrench as specified in this manual.
If fastened too tight, a flare nut could break and cause refrigerant leakage.
I I ns t a l l t h e u ni t a c c o r d i ng t o na t i o na l w i r i ng r eg u l a t i o ns .
I B e s u r e t o i ns t a l l a G r o u nd F a u l t I nt er r u p t ( G F I ) c i r c u i t b r ea k er .
Fa i l u r e t o i n s t a l l a Gr o u n d Fa u l t In t e r r u p t (GFI) c i r c u
electric shock or fire.
I W h en o p eni ng o r c l o s i ng t h e v a l v e b el o w
er a nt m a y s p u r t o u t f r o m
b o d y , r es u l t i ng i n i nj u r i es .
CAUTION
(Co u l d l e a d t o s e
I W h en c h a r g i n g t h e r e f r i g e r a n t s y s t e m
t h e u n i t , t o u s e l i q u i d r ef r i g er a nt .
A d d i n g g a s r e f r i g e r a n t m a y c h
s y s t e m a n d a f f e c t
l i q u i d r e f r i g e r a n t s l o w l y , o t h e r w i s e
t h e h i g h p r e s s u
(under 104°F (40°C)) during cold season. But never use naked fire or steam.
u l d c a u s e a
P i p e l e n g t h a n d h e i g h t d i f f e r e n c e
M a x . h e i g h t
f o r m u l t i - s y s t e m d i f f e r e n c e
4 9 f t . (1 5 m )
* 7 If p i p e l e n g t h e x c e
i s r e q u i r e d . (N o a d d i t i o n a l c h
(4 0 m ). )
A d d i t i o n a l r e f r i g e r a n t (f t . ) = A ×
A d d i t i o n a l r e f r i g e r a n t (m ) = A × (p i p e l e n g t h (m ) - 4 0 )
*8 The piping specification table does not provide a minimum line set length.
However, indoor units with connected piping length less than 10 ft. (3m) could
produce intermittent noise during normal system operation in very quiet envi-
r o n m e n t s . P l e a s e
l o c a t i n g t h e i n d o o r u n i t w i t h i n t h e c o
R eq u i r ed T o o l s f o r I ns t a l l a t i o n
5 / 3 2 i n . (4 m m ) h e x a
w r e n c h
l e Fl a r e t o o l f o r R 4 1 0 A
i f e o r s c i s s o r s Ga u g e m a n i f o l d f o r R 4 1 0 A
V a c u
(o r s p a n n e r ) Ch a r g e h o s e
P i p e c u
n d i t i o n e r .
.
r i o u s i n j u r y , e t c . )
e d s e c u r e l y , d u s t , w a t e r , e t c .
o f f o r e i g n s u b s t a n c e s u c h a s a i r c a
l t i n e x p l o s i o n o r i n j u r y . T h e u s e
o w n . In t h e w o r s t c a s e , t h i s c o u l d l e a d t o a s e
s a f e t y .
n n e c t e d w h i l e t h e c o
u l d b e c o m e a b n o r m a l l y h i g h , c a u s i n g t h e p i p e s t o b u r s t .
r i s s t a r t e d b e f o r e t h e r e f r i g e r a n t p i p e s a r e c o
m e a b n o r m a l l y h i g h , c a u s i n g t h e p i p e s t o b u r s t .
f r eez i ng t em p er a t u r es , r ef r i g -
t h e g a p b et w een t h e v a l v e s t em
r i o u s i n j u r y w h e n o p e r a t e d i n c o
w i t h a d d i t i o n a l r e f r i g e r a n t , b e s u r e
a n g e t h e c o m p o s i t i o n o f t h e r e f r i g e r a n t i n t h e
n o r m a l o p e r a t i o n o f t h e a i r c o
t h e c o m p r e s s o
r e o f t h e g a s c y l i n d e r , w a r m t h e g a s c y l
* 1 , * 2 , * 3 , * 4 , * 5 , * 6 , * 8
M a x . n o . o f b e n d s p e r i n d o o r u n i t /
f o r m u l t i s y s t e m
2 5 / 5 0
e d s 1 3 1 . 2 f t . (4 0 m ), a d d i t i o n a l r e f r i g e r a n t (R 4 1 0 A ) c h
a r g e i s r e q u i r e d f o r p i p e l e n g t h l e s s
(p i p e l e n g t h (f t . ) - 1 3 1 . 2 )
5
b e a w a r e o f t h i s i m p o r t a n t i n f o r m a t i o n w h e n i n s t a l l i n g a n d
n d i t i o n e d s p
g o n a l
u m p u m p f o r R 4 1 0 A
f o r R 4 1 0 A
t t e r w i t h r e a m e r
c o u l d c o l l e c t i n t h e u n i t a n d
n c a u s e a b n o r m a l p r e s s u r e
o f a n y r e f r i g e r a n t o t h e r t h a n
r i o u s i m p e d i m e n t
u l d c a u s e t h e p i p e s t o b u r s t
m p r e s s o r i s r u n n i n g a n d
n n e c t e d a n d t h e
i t b r e a k e r m a y r e s u l t i n
a nd t h e v a l v e
r r e c t l y . )
n d i t i o n e r . A l s o , c h a r g e t h e
r w i l l b e l o c k e d . T o m a i n t a i n
i n d e r w i t h w a r m w a t e r
R e f r i g e r a n t
a d j u s t m e n t A * 7
1 . 0 8 o z e a c h 5 f t .
(2 0 g / m )
a r g e
t h a n 1 3 1 . 2 f t .
a c e .