Refrigerant Piping - Toshiba RAV-SM2804AT7 Installation Manual

Digital Inverter
5

REFRIGERANT PIPING

Knockout of Pipe Cover
Knockout procedure
Front direction
• The indoor/outdoor connecting pipes can be connected
in 4 directions.
Take off the knockout part of the pipe cover through
which pipes or wires will pass through the base plate.
• Detach the pipe cover and tap on the knockout section a
few times with the shank of a screwdriver. A knockout
hole can easily be punched.
• As shown in the figure below, it is easier to punch out the
knockout hole when the pipe cover is left in place rather
than when the cover is removed from the unit.
In knocking out the hole, the knockout section can easily
be removed by hand once the bottom of the three
locations where the section is joined along the guide lines
is broken using a screwdriver.
• After punching out the knockout hole, remove burrs from
the hole, and install the protective bush and guard
material around the passage hole provided as
accessories in order to protect the wires and pipes. Also
be sure to attach the pipe covers after connecting the
pipes. The pipe covers can be easily attached by cutting
off the slits at the lower part of the covers.
* Be sure to wear heavy work gloves while working.
Rear direction
Pipe cover
Side direction
Down direction
Optional Installation Parts
(Locally procured)
Refrigerant piping
Liquid side: Ø12.7 mm
A
Gas side: Ø19.1 mm (Approx. 800 mm)
Ø28.6 mm
Pipe insulating material
B
(polyethylene foam, 10 mm thick)
C Putty, PVC tape
REQUIREMENT
Follow the instructions in the installation manual provided
with the branch pipe kit and the instructions in the installation
manual of the indoor unit to connect the refrigerant pipe
between the branch pipe and indoor unit.
Refrigerant Piping Connection
CAUTION
TAKE NOTE OF THESE 4 IMPORTANT POINTS BELOW
FOR PIPING WORK
1. Keep dust and moisture away from inside the connecting
pipes.
2. Tightly connect the connection between pipes and the
unit.
3. Evacuate the air in the connecting pipes using a
VACUUM PUMP.
4. Check for gas leaks at connection points.
Piping connection
Outer diameter
Ø12.7 mm
Outer diameter
Ø19.1 mm
Ø28.6 mm
REQUIREMENT
On the gas side, be sure to use the Ø19.1 mm pipe provided
with the outdoor unit.
10
Parts name
Liquid side
Thickness
0.8 mm
Gas side
Thickness
1.2 mm
1.0 mm (half hard)
Q'ty
One each
1
One each
EN