MANUAL INSTALACION LE MANS - DIGITAL (U.I.).pdf
MANUAL INSTALACION LE MANS - DIGITAL (U.I.).pdf
MANUAL INSTALACION LE MANS - DIGITAL (U.I.).pdf
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7 EVACUATING<br />
Heat insulation<br />
1. Provide heat insulation on the refrigerant piping on<br />
both the liquid side and gas side separately, and<br />
ensure that all joints in the insulation are completely<br />
sealed (without gap).<br />
2. Since the temperature of the piping on the gas side<br />
increases during heating operations, the heat<br />
insulating material used must be able to withstand<br />
temperatures of more than 120°C.<br />
3. Use the pipe insulation supplied in the accessory<br />
pack to insulate the piping connecting section on the<br />
indoor unit side.<br />
Packed valve handling precautions<br />
• Open the valve stem all the way out; do not try to<br />
open it beyond the stopper.<br />
• Securely tighten the valve stem cap in torque as<br />
follows:<br />
Gas side (12.7 mm (diam.)) 50 to 62 N•m (5.0 to 6.2 kgf•m)<br />
Liquid side (9.52 mm (diam.)) 33 to 42 N•m (3.3 to 4.2 kgf•m)<br />
Liquid side (6.35 mm (diam.)) 14 to 18 N•m (1.4 to 1.8 kgf•m)<br />
Service port 14 to 18 N•m (1.4 to 1.8 kgf•m)<br />
<br />
• As shown in the figure, be sure to use a double<br />
spanner to loosen or tighten the flare nut of the valve<br />
at gas side. If using a single spanner, the nut cannot<br />
be tightened with necessary tightening torque.<br />
Cap<br />
SM802 type v alve at gas side<br />
Loosened<br />
Hexagonal wrench is required.<br />
Cover<br />
Tightened<br />
Flare nut<br />
Piping valve<br />
14<br />
Cover<br />
Do not put the spanner or<br />
torque wrench, etc. on the<br />
cover.<br />
The valve may be broken.<br />
• On the contrary, use a single spanner to loosen or<br />
tighten the flare nut of the valve at liquid side.<br />
Charge port<br />
Valve unit<br />
Flare nut<br />
Position of grooves for driver<br />
Grooves for driver<br />
Using a minus<br />
screwdriver, turn it<br />
counterclockwise by<br />
90° until it hits the<br />
stopper. (Full open)<br />
Closed completely Opened fully<br />
*1. When opened fully, do not apply an excessive torque<br />
after the screwdriver hit the stopper; other-wise a<br />
trouble may be caused on the valve. (5 N•m or less)