Mitsubishi Electric MSZ-GL18NA User manual

1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
 
 
 
 
 Required Tools for Installation













MSZ-GL18NA
MSY-GL18NA

-

■Do not install the unit by yourself (user).
 


■Follow the instructions detailed in the installation manual.
 -

■When installing the unit, use appropriate protective equipment and tools for
safety.
 
■Install the unit securely in a place that can bear the weight of the unit.
 

■ Perform electrical work according to the installation manual and be sure to use
an exclusive circuit. Do not connect other electrical appliances to the circuit.
 

■Ground the unit correctly.
 -

■ Do not damage the wires.
 
■ Be sure to shut off the main power when setting up the indoor P.C. board or
wiring.
 
■ -

 
■ 
 
■Do not use intermediate connection of the power cord or the extension cord.
Do not connect many devices to one AC outlet.
 
■ 
 

■ When plugging the power supply plug into the outlet, make sure that there is
no dust, blockage, or loose parts both in the outlet and on the plug. Verify that
the power supply plug is completely in the outlet.


■ Securely attach the electrical cover to the indoor unit and the service panel to
the outdoor unit.



■ When installing, relocating, or servicing the unit, make sure that no substance
!"#$%&
 




■ Do not discharge the refrigerant into the atmosphere. Check that the refriger-
ant gas does not leak after installation has been completed. If refrigerant leaks
during installation, ventilate the room.
 
 

■ Use appropriate tools and piping materials for installation.
 


■ When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes.
 


■ When installing the unit, securely connect the refrigerant pipes before starting
the compressor.
 


■ '+
 
■ Install the unit according to national wiring regulations.
■Depending on the installation area, install a Ground Fault Interrupt (GFI) circuit
breaker.
 

■Perform the drainage/piping work securely according to the installation manual.
 

■ 
 
■Do not install the outdoor unit where small animals may live.
 

CAUTION 
WARNING 
ENGLISH

INSTALLATION MANUAL


 MSZ-GL18NA
MSY-GL18NA

 
  
  

 
 15
  14
  

  

  12.5

 

 

  


 

 1/4 (6.35)   
-

   
  

  
  
 

 
 


added  
1-3. SPECIFICATIONS
1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR
WIRE CONNECTION
 
     -

 
 
Connecting wires and the ground wire
   

 
 

Power supply cable and ground wire
 
 

Note:
-


 



     

 

 

 
1-3-2. REFRIGERANT PIPES
 
           

CAUTION




1-2. SELECTING THE INSTALLATION LOCATION
INDOOR UNIT
 
 
 
        -


 
 
       
  -

          




 


Note:
-

REMOTE CONTROLLER
 
 
 





Note:



OUTDOOR UNIT
 
 
 

  

 
 

   

         -
         

 
    


Note:
 

         


Note:
-


 

  





 
 

 
       


 
         



  
    


1-4. INSTALLATION DIAGRAM
ACCESSORIES


(1)  1
(2)
-

4 × 25 mm
5
(3)  1
(4)  1
(5)  1
(6)



2
  2
  2
FIELD-SUPPLIED PARTS
  1
  1
  1
(D)  1
  
(F)  
  1
  1






(J)  1
(K) *11


-








Note:
     
          

 
Drain piping for outdoor unit









-















5 1/4 in.
(133 mm)








33-1/16

19-11/16



13

 



 























-





2-1. ATTACHING THE INSTALLATION PLATE
 -

 


                -


 
2. INDOOR UNIT INSTALLATION


2-2. DRILLING

                    


2-3. CONNECTING WIRES FOR INDOOR UNIT
Note:
-





   
-
     



              
  
          

-










6/32-9/32 in.

Ø 3 in.

Lead
wire
19/32 in.
(15 mm)




 
  
INDOOR UNIT

208/230 V AC
1 phase, 60 Hz




OUTDOOR UNIT






 
Remark:
 


 -




  








5 1/4 in.
(133 mm)





 





























 
 











2-4-2. DRAIN PIPING
 -

 
                 

 -


 














1-31/32 in.




Drain


19/32 in.
(15 mm)











  
2-4. PIPE FORMING AND DRAIN PIPING
2-4-1. PIPE FORMING
 
 
 
               

Note:


Left or left-rear piping
Note:




 


 

 


 


 

           












 
 



Rear or bottom piping


-

      


Right piping
Note:




-

      








-








Lead
wire
19/32 in.
(15 mm)
3-1. CONNECTING WIRES FOR OUTDOOR UNIT


        



            
                
           




3-2. FLARE CONNECTION

               





 
 
3. OUTDOOR UNIT INSTALLATION
Power supply cord (K)
L1 L2



90°


 
 







-







 




(mm)
 










 
 21/32






1.5)





 
 
(22)

 
 1-1/32
(26) 


2.5)

 

1-5/32
(29)

 

Die 
        -

       

     -
  









Power supply cord (K)






3-3. PIPE CONNECTION
 
 
            

Indoor unit connection

 -


 
 

Outdoor unit connection


 
4-4. EXPLANATION TO THE USER
 -


 
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
4-2. TEST RUN


 

        


         -

Checking the remote (infrared) signal reception


 

4-3. AUTO RESTART FUNCTION







Caution:
 
-

To the user
 
 -

3-4. INSULATION AND TAPING



 

WARNING
When installing the unit, securely connect the refrigerant pipes before starting the
compressor.
4-1. PURGING PROCEDURES AND LEAK TEST
1) 



















 
-







 



















)

-
   

            






    








5-3. PUMPING DOWN





  



        

    

5)


.
 

5. RELOCATION AND MAINTENANCE
5-1. REMOVING AND INSTALLING THE PANEL
ASSEMBLY
Removal procedure




5-2. REMOVING THE INDOOR UNIT



Installation procedure

         

1
2
3
22
4
4
When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING

