Carrier 42qg24-h Manual

							 
 
18
 
12.  INSTALLATION OF INDOOR UNITS   
12.1  PREPARATION STEPS OF INDOOR UNIT BEFORE INSTALLATION 
a.  Put packed unit as shown.  
  Remove plastic strap (item 1) from 
cardboard.
 
 
 
 
 
 
d.  Lift insert grille to the top of the unit 
with both hands and it will be 
automatically separated from unit. 
 
 
 
 
 
 
 
e.  Disassemble terminal block cover 
by removing two screws from grille 
frame. 
 
b.  Slide unit from carton (item 1) 
  Lift unit with Styrofoam 
  Parts from carton box 
  Remove Styrofoam parts 
• By pulling right and left  
  Styrofoam you will find small carton box 
containing electrical connection  cords and 
remote   control with its accessories.
 
 
 
 
 
 
• Turn the unit up, you will find the 
mounting bracket. 
   
f.  Pull the triangle marks located at 
bottom of the grille frame. 
g.  Lift grille frame to top of the unit. 
 
 
 
 
 
 
 
 
 
 
c.  Remove the screw-fixing wall 
mounting bracket with the unit.   
 
Remove the wall-mounting bracket from the 
unit by pushing up the indicated marks ( ▲) 
at the bottom of the body. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
h.  Fix the optional plastic holder of the 
remote control on the wall by using 
optional anchor screw and screw 
1
3
2
Removal of wall hang bracket REMOVE SCREW 
						

							 
 
19
 
INSTALLATION OF INDOOR UNITS (Cont.) 
 
12-2  INSTALLATION STEPS OF INDOOR UNIT 
STEP (1): Selecting Wall Hole Location Back Piping 
In case of passing refrigerant piping lines, electrical cables 
and condensate drain line behind the unit, drill a hole of 8 cm 
behind the unit in one of the following locations as per 
sequence: 
Location (A): behind unit right.  
Location (B): behind unit Left.
   
 
Side or bottom piping 
In case of passing refrigerant piping lines, electrical cables 
and condensate drain line from unit right side or from unit 
bottom, detach the knockout in either the side or bottom of the 
unit. 
 
 
 
 
 
 
Step (2):  Making Wall Hole Precautions:  
Before making a hole, check carefully that : 
-  The wall is flat and perpendicular. 
  If the wall is not flat and perpendicular, the indoor unit can 
be unstable and condensate drain can spill. 
-  No studs or pipes are directly run behind the spot to be cut. 
-  No electrical wiring or conduits are located. 
• Drill a hole of 80 mm to pass the refrigerant lines, drain 
hose and electrical cables.  
The wall hole can be made as required in either location 
(A) or (B).  
When making wall hole, make sure to drill outwards at a 
downward angle, so that the height difference between 
the entrance and exit of the hole is at least 5-10 mm.
  
 
Step (3):  Cutting Sleeve For Wall Hole 
• Measure the thickness of the wall from the inside edge to 
the outside edge and cut PVC pipe at a slight angle 6mm 
shorter than the thickness of the wall. 
 
Step (4):  Mounting Sleeve Into Wall Hole 
• After making hole, a sleeve must be mounted into wall 
hole and its width to be equal to wall thickness to pass 
refrigerant lines, drain hose and electrical cables through 
it. 
 
Step (5) : Installing the wall hang bracket 
• Allow the clearance space around the unit, which permits 
adequate air circulation, easy access to the unit for easy 
service and maintenance. 
• Fix wall hang bracket on the wall so that it is leveled 
vertically and horizontally by using the five self-tapping 
screws supplied with the unit in the plastic page 2 (Two) 
screws to fix bracket top. 1 (One) screws to fix bracket 
mid, 2 (Two) screws to fix bracket bottom, Use a plumb 
line if necessary to adjust leveling of the wall hang.
    
 
Wall Hole Locations  
5-10 mm
Wall
Wall  Indoor 
side Outdoor 
side 
Cut Wall Sleeve
Indoor 
side Outdoor  
Side Wall 
 Sleeve
 Space Around Unit Indoor Unit 
						

							 
 
20
 
INSTALLATION OF INDOOR UNITS (Cont.) 
 
  INSTALLATION STEPS OF INDOOR UNIT (Cont.)  
 
NOTES: 
a.  Fasten the wall hang bracket to the wall with 
all the 5 (Five) screws supplied with unit.  
  This correct fixation will prevent motion of 
bracket after fixation, which can cause noisy 
unit operation.
 
 
b.  The wall hang bracket must be leveled in both 
horizontal and vertical directions after fixation 
without tilting to the right or lift to avoid water 
dropping from the unit onto the floor. See Fig. 
 
c.  Install the wall hang bracket so that three is 
no gap between it and the wall to avoid 
vibrations and sound during unit operation. 
 
d.  Check that the wall hang bracket does not 
move.  
This can cause noise during operation.
 
 
 
Step (6): Electrical wiring of indoor unit 
See chapter (18) : Connecting Electrical Wiring. 
 
Step (7): Forming refrigerant piping drain 
hose and electrical cables of 
indoor unit. 
 
• As per the selected location of wall hole, 
form and tie together with vinyl tape the 
refrigerant piping, electrical cables and 
drain hose. 
  The drain hose should be at the bottom.
 
 
• For left piping fit the refrigerant piping, 
electrical cords and drain hose into the 
recess at back of indoor unit. 
 
Notes: 
 
a.  Do not crush or kink the indoor unit piping. 
Avoid tight bending with a bending radius 
less than 100 mm. 
 
b. Do not bend the same part of the pipe too 
often. 
 
c.  Do not remove the flare nuts from the indoor 
unit piping until the piping is ready for 
connection with refrigerant piping lines. 
  
 
X 
 An Uneven Installation  
Indoor unit piping
Drain hose  Bind with vinyl tape  Left Piping 
Indoor unit  
piping 
Connection 
 
cables  
						

							 
 
21
 
INSTALLATION OF INDOOR UNITS (Cont.) 
 
INSTALLATION STEPS OF INDOOR UNIT (Cont.) 
Step (8): Passing refrigerant piping, 
electrical cords and drain hose 
of indoor unit through wall 
sleeve. 
 
• Passing refrigerant piping lines 
through the wall sleeve is done before 
hooking the indoor unit body onto the 
top of the wall hang bracket. 
 
• For left piping, hang the unit onto the 
top of the wall hang bracket and 
incline the unit using a tool such as a 
screw driver set between the middle 
area of body and bottom right of the 
wall hang bracket. 
 
  Connecting the piping can be done more 
easily if the unit is inclined. 
 
Warning:
 
Do not supply power to the indoor unit until all 
refrigerant piping and electrical wiring to the 
outdoor unit are completed. 
 
 
Step (9): Installing the Indoor Unit Body 
  to the Wall  Mounting Bracket 
 
• Snap the marking places of the body (A, B) 
onto the hole of the bracket. 
 
 NOTES:
 
• In case of removing the unit from the wall 
hang bracket after installing it onto the wall, 
remove it by pushing up the indicated marks  
( ▼) at the bottom of the body. 
 
• After installation of unit, if there is a 
significant gap between the unit and wall, 
securing 2 screws to the body and wall-
mounting bracket can adjust it. 
 
Refer to the screw hole location (C, D) in the 
Figure. 
Screw holes can be only seen after removing 
the grille frame. 
 
 
 
A B C D 
340 270 270 195 
Dimensions in mm 
AB CD
Wall
Hole  Wall mounting bracket 
Hook 
						

							 
 
22
 
13.   REMOTE CONTROL INSTALLATION  
  13.1  HOW TO INSERT BATTERIES: 
(a) Remove the cover of battery compartment at the back of the remote 
control by pressing the tab toward inside, in the direction of the arrow. 
 
 
 
 
 
 
 
(b) Mount the two-battery size AAA 1.5 Volt supplied with the remote control. 
Then close the cover of the battery component. 
 
Note:
  
During mounting of batteries check battery symbols (+, -) indicated in 
batteries compartment. 
 
 
NOTES: 
1.  The remote control uses two alkaline batteries (1.5V, LRO03x2).  
2.  Do not use used batteries or batteries of different types, as this may cause the air conditioner to 
malfunction. 
  
3.  Batteries should only be changed after turning OFF the air conditioner.  
4.  The average battery life during normal use is approximately one year.  
 
6.  When the symbol  appears in the display of the remote control, this indicates that the 
batteries are exhausted and required to be replaced 
 
 
  13-2  INSTRUCTION: 
WHEN DIRECTING THE TRANSMITTER OF WIRELESS REMOTE CONTROL TO THE RECEIVER 
OF INDOOR UNIT FROM A CERTAIN LOCATION, CHECK THE FOLLOWING POINTS: 
 
1-  Avoid direct sunlight on the receiver of indoor unit, which may interfere with good signal reception    
2-  No obstructions such as curtains or plants should be between the remote control and the receiver 
of indoor unit. 
 
3-  The maximum operating range for the remote control is approximately 5 meters.  
4-   The remote control must be directed toward the receiver of indoor unit when pressing the buttons of 
the desired functions. An acoustical acknowledgement sound (beep) will indicate that signal has 
been received. 
						

							 
 
23
 
14.  OUTDOOR UNIT INSTALLATION  
 
14.1   PREPARATION STEPS BEFORE INSTALLATION 
 
a.  Put packed unit as shown. 
 
 
b.  Lift unit from cardboard. 
 
 
 
 
 
 
 
 
 
c.  Remove service door (item 2) by 
removing one screw (item 1). 
  Detach the cable clamp by  
  removing one screw. 
 
 
 
 
 
 
 
 
14.2   INSTALLATION STEPS 
WALL INSTALLATION STEPS  FLOOR INSTALLATION STEPS  
 
Wall Support Dimensions (mm) 
 
 
 
 
 
 
 
 
 
 
 
 
 
Floor Support Dimensions. (mm) 
 
 
fix wall support into the wall 
Put unit on the wall support. 
  
 
 
If the outdoor unit installed other than on the ground, 
connect it to a 15-16 mm inside diameter hose. This is 
needed because drain water flows out of the outdoor unit 
during heating operation. 
(Only for heat pump unit) 
 
Put outdoor unit on the floor support 
 
 
1
215
Floor 
Support  888 443
80 32 
42 557
162
412
215
443 886 415  132 
132 
2 
						

							 
 
24
 
15.  CONNECTING REFRIGERANT PIPING LINES   
15-1   INSTRUCTIONS FOR CONNECTIING REFRIGERANT PIPING LINES  
 
Avoid excessive height difference 
between indoor and outdoor units. 
 
Avoid excessive length of refrigerant 
piping lines between indoor and outdoor 
units 
 - All bends must be considered when 
connecting indoor unit with outdoor unit 
by required length  
  of refrigerant piping lines. 
-  Do not remove the protective caps from 
the couplings until the refrigerant piping 
lines are ready for connection with both 
indoor and outdoor units. 
  This is to keep piping clean. 
- The installer must carefully unroll the 
tubing and run it between the indoor and 
outdoor units. 
● Do not bend the pipe more than three 
times at one place. 
● When extending the rolled pipe, 
straighten the pipe by unwinding it. 
When forming the pipe. Be careful not to 
crush it. 
 
Flattening or kinking of refrigerant piping 
must be avoided 
 When making a bend, the installer cuts 
insulation and slides it away from the 
bend area. Using a tube bender    makes 
the bend and then the insulation is 
replaced gluing it together. 
Insulation Copper 
Piping 
 Not 
Recommended Recommended  
						

							 
 
25
 
CONNECTING REFRIGERANT PIPING LINES (Cont.)  
INSTRUCTIONS FOR CONNECTIING REFRIGERANT PIPING LINES (Cont.) 
 The minimum radius of bending must not 
be less than 100 mm to avoid damage of 
tubing. 
Once the tubing is bent, the installer must 
not unbend at the same point as this 
causes work hardening of copper tubing 
and makes it more difficult to reshape 
 
Avoid disconnecting refrigerant 
connections after they have been tightened 
to avoid refrigerant leaks. 
 When there is excessive tubing, it must be 
coiled horizontally so that the flow of 
refrigerant is from the top to bottom of the 
coil and towards the outdoor unit. 
 The excessive tubing must not  be coiled 
vertically since the vertical coil affects the 
oil return to the compressor. 
 
 For bends having a radius smaller than 300 
mm, the use of a tuber bender with a 
minimum wheel diameter of 120 mm is a 
must. 
The tube bender wheel grooves should 
have the same diameters as the refrigerant 
pipes. 
 
Avoid excessive number of bends in 
refrigerant piping lines during connections 
with both the indoor and outdoor units. 
This is to avoid reduction of cooling 
efficiency. 
 
Bends with tube diameter bigger than ½” or 
a bending radius than 300 mm should be 
made with a dime. Having this radius. 
 
Radius of Bending 
Excessive tubing  
must be coiled 
horizontally  
						

							 
 
26
L
 
CONNECTING REFRIGERANT PIPING LINES (Cont.)  
15.2  USE OF REFRIGERANT PIPING LINES  
The following data refers to the use of refrigerant piping lines of diameters equivalent to that use in 
units where:           L   =  Maximum length of refrigerant piping lines between outdoor and indoor unit. 
H  =  Maximum vertical distance between outdoor and indoor units. 
(A) OUTDOOR UNIT BELOW INDOOR UNIT: 
a.  Suction line should rise above height of Indoor unit to shape a liquid trap in an inverted 
loop before descending to outdoor unit to prevent liquid refrigerant from draining into 
compressor during shutdown. 
          b.    Slop tubing towards the outdoor unit with a fall of at least (6mm) to (305mm). 
 
(B) OUTDOOR UNIT ABOVE INDOOR UNIT: 
• If height is less than or equal 4 meters, one oil trap must be at the suction line at the base of 
suction riser near the Indoor unit to facilitate oil return to the compressor to ensure efficiency 
of compressor mechanical parts. 
• If height is more than 4 meters, more than one oil trap must exist at the suction line, the first 
one will be at the suction line near to the indoor unit and the following one will be 4 meters 
from the first one and so on.
 
 
(C) OUTDOOR UNIT ON THE SAME LEVEL AS INDOOR UNIT: 
 An oil trap shall be at the suction line at the base of suction riser near the Indoor unit to 
facilitate oil return to the compressor to ensure efficiency of compressor mechanical parts. 
 
Meters System 
Model L H 
53QG18 20 10 
53QG24 20 10 
 Liquid Trap 
Suction LineOutdoor 
Unit 
Meters System 
Model L H 
53QG18 20 10 
53QG24 20 10 
 
Meters System 
Model L 
53QG18 20 
53QG24 20 
 Outdoor
 
Unit 
Indoor UnitSlop
Oil TrapLiquid  Suction
Indoor 
Unit 
H 
Max.  
4m 
Liquid Line 
Slop
H  
Outdoor
 
Unit Indoor Unit
Oil Trap Liquid
Suction  
						

							 
 
27
 
CONNECTING REFRIGERANT PIPING LINES (Cont.) 
 
15-3  LENGTHS AND DIAMETERS OF REFRIGERANT PIPING LINES FOR ALL MODELS 
 
S L 
5/8” 3/8” 
S =   Suction line diameter.    
L  =  Liquid line diameter. 
 
 
15.4  REFRIGERANT CHARGE.  
 
• For refrigerant piping lines of length more than 3 meters, add 25 grams of refrigerant per 
extra meter from 3 meters refrigerant piping lines: 
 
Example 1  = For 8 meter lines, refrigerant added   = (8-3)  x 25  = 125  grams. 
 
Example 2  = For 12 meter lines, refrigerant added   = (12-3) x 25  = 225  grams. 
 
  
Note:
  
(1)  The outdoor unit is factory supplied with refrigerant charge for use with refrigerant piping lines 
of length 3 meters and with added 100 grams for air and moisture purge from the system. 
 
(2)  Charge the refrigerant accurately. 
(3)  Refrigerant overcharge may cause a serious trouble of compressor.