Refrigerant Piping - Toshiba RAV-SP404ATP-E Installation Manual

Set the out margin of the anchor bolt to 15 mm or less.
15 or less
• When water is to be drained through the drain hose,
attach the following drain nipple and waterproof rubber
cap, and use the drain hose (Inner dia.: 16 mm) sold
on the market. Also seal the screws securely with
silicone material, etc., to prevent water from leaking.
Some conditions may cause dewing or dripping of
water.
• When collectively draining discharged water
completely, use a drain pan.
Waterproof rubber cap
Drain nipple
(2pcs.)
Waterproof rubber cap
Base plate
Drain nipple
For Reference
If a heating operation is to be continuously performed for
a long time under the condition that the outdoor
temperature is 0 °C or lower, draining defrosted water
may be difficult due to the bottom plate freezing,
resulting in trouble with the cabinet or fan.
It is recommended to procure an anti-freeze heater
locally in order to safely install the air conditioner.
For details, contact the dealer.
EN-19
5

REFRIGERANT PIPING

Optional Installation Parts
(Locally procured)
Parts name
Refrigerant piping
A Liquid side : Ø6.4 mm
Gas side : Ø12.7 mm
Pipe insulating material
B
(polyethylene foam, 6 mm thick)
C Putty, PVC tape
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
Liquid side
Outer diameter
Ø6.4 mm
Gas side
Outer diameter
Ø12.7 mm
- 10 -
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2. Insert a flare nut into the pipe, and then flare the
Q'ty
pipe.
Use the flare nuts supplied with the air conditioner
or those for R410A.
One each
Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured
1
for R410A are recommended.
However, the conventional tools can be used by
One each
adjusting the projection margin of the copper pipe.
Projection margin in flaring : B (Unit : mm)
Rigid (Clutch type)
R410A tool
Outer dia. of
copper pipe
R410A
6.4
0 to 0.5
12.7
Flaring dia. size : A (Unit : mm)
Thickness
0.8 mm
Outer dia. of copper pipe
6.4
Thickness 12.7
0.8 mm
* In case of flaring for R410A with the conventional flare
tool, pull the tool out approx. 0.5 mm more than that
for R22 to adjust it to the specified flare size.
The copper pipe gauge is useful for adjusting the
projection margin size.
B
Conventional
used tool used
R410A
1.0 to 1.5
A
+0
A
–0.4
9.1
16.6
EN-20