16 | Unit installation
Installer and user reference guide
58
FXFA20~125A2VEB
VRV system air conditioner
4P599624-1A – 2020.06
≤675
≤300
0~75
1000~1500
(mm)
ba
b c
a
dd
a Metal clamp (accessory)
b Drain hose (accessory)
c Rising drain piping (vinyl pipe of 25mm nominal diameter and 32mm outer diameter) (field supply)
d Hanging bars (field supply)
▪ Combining drain pipes. You can combine drain pipes. Make sure to use drain
pipes and T-joints with a correct gauge for the operating capacity of the units.
a T-joint
To connect the drain piping to the indoor unit
NOTICE
Incorrect connection of the drain hose might cause leaks, and damage the
installation space and surroundings.
1 Push the drain hose as far as possible over the drain pipe connection.
2 Tighten the metal clamp until the screw head is less than 4 mm from the
metal clamp part.
3 Check for water leaks (see "To check for water leaks"[459]).
4 Install the insulation piece (drain pipe).
5 Wind the large sealing pad (= insulation) around the metal clamp and drain
hose, and fix it with tie wraps.
6 Connect the drain piping to the drain hose.
≤4 mm
A
A'
A-A'
A
A'
f
652
ce
4
ba
d
b
a
d
c
3
1
2~61
a Drain pipe connection (attached to the unit)
b Drain hose (accessory)
c Metal clamp (accessory)