Installation Of Outdoor Unit; Refrigerant Piping Work - McQuay CK20AR Installation Manual

Preliminary site survey
• A place protected from rain, direct sunlight and well-ventilated wherever practicable.
• A place capable of bearing the weight of the outdoor unit and isolating noise and vibration.
• A place where there are no obstruction of air flow into or out the unit.
• Do not put any object which may become obstacle for the air flow into or out the outdoor unit.
• The location must not be susceptible to high concentration dust, oil, salt or sulfide gas.
Outdoor unit installation
• Install the outdoor unit firmly and horizontally. Maintain a space clearance from the obstruction as shown in below for
servicing and air ventilation.
A B
SL SERIES
MIN. DISTANCE (mm)
Refrigerant piping is important in particular. Refrigeration cycle of the split air conditioner is realized
by the perfect piping work.
Piping length and elevation
If the piping is too long, both the capacity and reliability of unit will drop. As the number of bends increase, resistance to
flow of refrigerant system increases, thus lowering cooling capacity and as a result the compressor may become defective.
Always choose the shortest path and follow the recommendation as tabulated below.
MODEL INDOOR
OUTDOOR
MAX. LENGTH (M)
MAX. ELEVATION (M)
MAX. NO. OF BENDS
LIQUID PIPE SIZE
GAS PIPE SIZE
CK20A(1-16)ENG

INSTALLATION OF OUTDOOR UNIT

C
D
A B C
300 1000 300 500

REFRIGERANT PIPING WORK

CK20A/AR
SL20B/BRK
15 m
8 m
10
1/4"
5/8"
9
A B
D MSS SERIES
MIN. DISTANCE (mm)
CK25A/AR CK30A/AR
SL25B/BRK SL30C/CR
15 m 20 m
8 m 10 m
10 10
3/8" 3/8"
5/8" 5/8"
1-9
2/1/01, 10:15 AM
C
C
A B C
500 1000 500
CK40A/AR CK50A/AR
SL40C/CR SL50C/CR
20 m 20 m
10 m 10 m
10 10
3/8" 3/8"
3/4" 3/4"