Outdoor Unit

„Tightening of Flare Connections

1.Align the centers of the flare connections and fully tighten the flare nuts with your fingers.

Valve at liquid side

Cap

Loosened

Piping valve

Tightened

Flare nut

2.Use two wrenches to loosen or tighten the flare nut on the gas service valve as shown in the figure. Use only one wrench to loosen or tighten the flare not on the liquid service valve.

The final tightening with a torque wrench should be to the specifications shown in table below.

 

Unit : ft•lbs (N•m)

Outer diameter of copper pipe

Tightening torque

3/8” (9.5 mm)

24 - 31 (33 - 42)

5/8” (15.9 mm)

50 - 60 (68 - 82)

Valve at gas side

Cover

 

Cap

Piping valve

 

Charge orifice

 

 

Flare nut

 

Tightened

Loosened

 

Installation Manual

After the installation work, be sure to check for gas leaks of the pipe connections with nitrogen.

NO GOOD

Cover

Charge orifice

CAUTION

1.Do not put the crescent wrench on the charge orifice or cover.

The valve may be broken.

2.If applying excessive torque, the nut may break according to some installation conditions.

Pressure of R410A is higher than that of R22 (Approx. 1.6 times).

Therefore, using a torque wrench, tighten the flare pipe connecting sections that connect the indoor/ outdoor units at the specified tightening torque.

Incomplete connections may cause not only a gas leak, but also trouble with the refrigeration cycle.

Do not apply refrigerant oil to the flared surface.

13-EN

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Toshiba RAV-SP240AT2-UL „ Tightening of Flare Connections, Do not apply refrigerant oil to the flared surface

RAV-SP240AT2-UL specifications

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