INS-29
DUAL, TRIPLE, POKER DC Inverter : 4. Installation
Multi Liberty
DC Inverter
Metal supports
Insulating material
Slope higher than 1/100
Air vent
Higher than specified
Trap
The drain hose
tip is in water
The presence of air pockets
generates noise
Slope higher than 1/100
VP-30 or wider diameter
Max. possible level difference
(about 100 mm)
1.5 ~ 2m
(7) Position of drain hose
a) Check if drain piping (VP20) has a min. slope of at least 1/100 along all its path.
b) Avoid to carry out pipings’ portions with inverted slope, traps or air vents along the piping itself.
c) The end of piping must not be immersed, nor must be conveyed to manholes, hydroseparators of toxic
substances, to avoid that bad smells or vapors of noxious or toxic substances may enter the installation
room by going up along the drain piping.
e) This type of Indoor Unit is equipped with a condensate drain pump, and therefore it is possible to raise
drain pipe up to max. 360mm as regards drain socket, as it is shown in the Figure below.
d) In case of installation of an exhaust manifold for collecting
the condensate water from several Indoor Units of same
type, the main pipe must be at least 100mm beneath the
drain connection point of each Unit. For exhaust manifold,
use a piping VP-30 or wider diameter.
360mm
Max. raising of drain pipe
(8) Wiring
1. Indoor Units. Power lines and signal cable (min. section of 1.5mm
2
for all Models), prewired-up on
each Indoor Unit and provided of plug, must pass from Indoor Unit to Outdoor Unit, by starting from
Indoor Unit’s electric box and getting to specific connector (Unit “A”, “B”, “C”, “D”) on Outdoor Unit. If it is
needed to increase wiring standard length (6 metres), always use cables in accordance with to law only.
2. Terminal block can be reached by removing electric box’s protection cover, on Indoor Unit’s right side.
3. Always fix cables on screw terminal blocks firmly, and always use the special wire clamps on Indoor
Units to avoid that any traction on cables may be sent to terminal blocks’ contacts.
4. If protection fuse is broken, replace it by a fuse which is equivalent to original one.
5. Outdoor Unit. Power supply line must be for system only, that is it must not be shared with other
appliances. A circuit breaker must be installed - with suitable calibration to the system’s power input -
which simultaneously interrupts all contacts; in opening position, min. distance between contacts must
be of 3 mm. Moreover, the installation of an earth breaker is required, specific for Inverter appliances.
