Service manual

AEX3M18JR
4 – 2
Standard conditions
2. PERFORMANCE CURVES
NOTE: Total cooling capacity and total input with 3 units running.
At Cooling for AY-XPM7FR (for AE-X3M18JR)
At Heating for AY-XPM7FR (for AE-X3M18JR)
[2] REFRIGERANT PIPE INSTALLATION WORKS
1. Piping
Max. piping length A ------------------ 25m
Min. piping length A ------------------ 3m
Max. total piping length of all unit --- 50m
Max. level difference B -------------- 10m
• If total piping length exceeds 30m,
add 15g of refrigerant per 1m.
• When the outdoor unit is placed at a
higher level than the indoor units, pro-
vide a trap near the hose’s lead-in
port.
2. Air-removing
Use an adapter for preventing vacuum pump oil from flowing back to
the gauge manifold hose. ON/OFF operation of the vacuum pump
should be made by the adapter switch.
1) Remove both valve shaft caps of the stop valves.
2) Remove the service port cap of the stop valve (gas side).
3) Connect the gauge manifold hose to the service port and the vac-
uum pump. Be sure that the hose end to be connected to the ser-
vice port has a valve core pusher.
4) Open the gauge manifold valve and operate the vacuum pump for
10-15 minutes. Make sure the compound gauge reads -0.1MPa (-
76cmHg).
5) Close the gauge manifold valve.
6) Turn off the vacuum pump.
7) Fully open the stop valve (liquid side) with hexagon socket screw
key. Turn all the way up to contact.
AY-XPM9FR
(1 unit)
(1) 74 63 82 53
(2) 37 38 2 4
(3) 10 14 38 26
(4) 13 19 4 7
Stop valve pressure Frequency 0.96MPa (abs) 1.17.MPa (abs) 3.20MPa (abs) 30MPa (abs)
Frequency 50Hz 30Hz 70Hz 20Hz
AY-XPM7FR
(1 unit)
(1) 69 62 73 50
(2) 37 37 3 4
(3) 11 14 33 27
(4) 15 20 5 7
Stop valve pressure Frequency 1.02MPa (abs) 1.17MPa (abs) 3.00MPa (abs) 2.00MPa (abs)
Frequency 40Hz 20Hz 55Hz 25Hz
Indoor side Outdoor side
Dry-bulb temp. (°C) Relative humidity (%) Dry-bulb temp. (°C) Relative humidly (%)
Cooling 27 47 35 40
Heating 20 – 7 87
Running unit No
Operation Mode
Cool (MAX) Cool (Test run) Heat (MAX) Heat (Test run)
4442403836343230282624
4.5
5.0
5.5
6.0
13
14
15
16
17
1200
1000
1400
1600
1800
Coolingcapacity(kW)
Outside air temp. (ºC)
Input(W)
Outlet air temp. (ºC)
(Running frequency: 105HZ)
Outside air temp. (ºC)
Outlet air temp. (ºC)
-4 -2 0 2 4 6 8 10 12-6
6.0
5.0
7.0
8.0
34
32
30
28
26
24
36
38
1200
1000
1400
1600
1800
Heatingcapacity(kW) Input(W)
(Running frequency: 110HZ)
B
B
TRAP
OUTDOOR
UNIT
INDOOR UNIT
A