Refrigerant Piping; Piping Length & Elevation - Daikin FTXN25MV1B Technical Manual

REFRIGERANT PIPING

Piping Length & Elevation
If the pipe is too long, both capacity and reliability of the unit will drop. As the number of bends increases,
resistance to the fl ow of refrigerant system increases, thus lowering cooling capacity. As a result, the
compressor may become defective. Always choose the shortest path and not exceed the maximum piping
length as tabulated below.
Maximum Total
Model Piping Length
(m)
2MX45BGXV1
L + L
(2 Ports)
1
2MX50BGXV1
L + L
(2 Ports)
1
3MX60BGXV1 L + L
1
(3 Ports) ≤ 60
4MX80BGXV1 L + L
1 2
(4 Ports) L ≤ 60
4
INDOOR UNIT
RETURN AIR
AIR DISCHARGE NOZZLE
* Remark: Applicable for Wall Mounted, Ceiling Cassette, Ceiling Concealed, Ceiling Convertible Unit.
Single Indoor
Maximum
Piping Length
(m)
≤ 30 L ≤ 20
2
≤ 50 L ≤ 25
2
+ L
L ≤ 25
2 3
+ L +
L ≤ 25
3
OUTDOOR UNIT
Maximum Pre-charged
Height Total Piping
Difference (m) Length (m)
H ≤ 15 15
H ≤ 15 30
H ≤ 15 30
H ≤ 15 30
AIR FILTER
DRAIN HOSE
Application Information
Outdoor Unit Amount of
Pre-charged Additional
(kg) Charge (g/m)
1.2 20
2.0 20
2.6 20
2.6 20
FRONT FRAME
SIGNAL RECEIVER
INDICATOR LIGHT &
ON/OFF SWITCH
17