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-TechManual_SRK05,09,12CR-S,CRR-S,CRP-S

Removal and installation

Removal and installation of the front panel Removing Remove the 2 set screws. Move the lower part of the panel forward and push upwards to remove. (Remove the 3 latches in the upper section.) Fitting Do remove the air filter. Cover the body with the front panel. Push the circled portion at the front. Tighten the 2 set screws. Fit the air filter. Carry out in the above order. Installation of outdoor unit Make sure that the unit is stable in installation. Fix the unit to stable base. Perfrom wiring, making wire terminal numbers conform to terminal numbers of indoor unit terminal block. Earth lead wire shall be longer than the other lead wires for the electrical safety in case of the slipping out of the cord from the anchorage. Connecting diagram. Make sure that the unit is stable in installation. Fix the unit to stable base. Perfrom wiring, making wire terminal numbers conform to terminal numbers of indoor unit terminal block. Earth lead wire shall be longer than the other lead wires for the electrical safety in case of the slipping out of the cord from the anchorage. Connecting diagram. Power source Power source L N L N Terminal on the indoor unit Terminal on the indoor unit L 2/N 1 2 L 2/N 1 Terminal on the outdoor unit 1 2 Terminal on the outdoor unit 1 '15 • SRK-T-171 Set screws Terminal block 1 2 Interconnecting wire Terminal block 1 2 Interconnecting wire – 32– RMA012A080_091-093_EN.indb 32 05/11/2014 11:50:41

Connection of refrigerant pipings Preparation Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them. Indoor (Do not turn) Press Remove Remove the flared nuts. (on both liquid and gas sides) Flaring work Flaring block Indoor Liquid side Gas side (Do not turn) Measur ement B Copper pipe Outdoor Copper pipe diameter Liquid side Gas side ♦ Additional refrigerant charge Clutch type flare tool for R410A Connection of refrigerant piping Air purge Outdoor Remove the flared nuts. (on both liquid and gas sides) Tighten all flare nuts in the pipings both indoor and outside wall so as not to cause leak. Connect operation valve, charge hose, manifold valve and vacuum pump as is illustrated right. Open manifold valve handle Lo to its full width, and perform vacuum or evacuation. Continue the vacuum or evacuation operation for 15 minutes or more and check to see that the vacuum gauge reads -0.1MPa. After completing vacuum operation, close the Lo handle and stop operation of the vacuum pump. After completing vacuum operation, fully open operation valve (Both gas and liquid sides) with hexagon headed wrench. Check for possible leakage of gas in the connection parts of both indoor and outdoor. Since the system uses check joints differing in diameter from those found on the conventional models, a charge hose (for R22) presently in use is not applicable. Please use one designed specifically for R410A. Please use an anti-reverse flow type vacuum pump adapter so as to prevent vacuum pump oil from running back into the system. Oil running back into an air-conditioning system may cause the refrigerant cycle to break down. '15 • SRK-T-171 (Unit : mm) CAUTION Dimension A Liquid side : ø6.35: 9.1 Do not apply A Gas side ø9.52: 13.2 refrigerating machine ø12.7: 16.6 oil to the surface. ø15.88: 19.7 Install the removed flared nuts to the pipes to be connected, then flare the pipes. Conventional (R22) flare tool Use a flare tool designed for R410A or a conventional flare tool. Please note that Clutch type Wing nut type measurement B (protrusion from the flaring block) will vary depending on the type of a flare tool in use. If a conventional flare tool is used, please use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value. CAUTION N·m (kgf·m) Do not apply excess torque to the nuts. Otherwise, the nuts may crack depending on the conditions and refrigerant leak may occur. Compound pressure gauge Operation valve cap Pressure gauge Operation valve Gauge manifold (two-way valve) -0.1MPa (Designed specifically (-76cmHg) for R410A) Handle Lo Handle Hi Charge hose Operation valve (Designed specifically for R410A) (three-way valve) Vacuum pump adapter Operation valve (Anti-reverse flow type) cap (Designed specifically for R410A) Check joint Vacuum pump Charge hose (Designed specifically for R410A) Securely tighten the operation valve cap and the check joint blind nut after adjustment. Operation valve size Operation valve cap Check joint blind nut (mm) tightening torque (N·m) tightening torque (N·m) ø 6.35 (1/4") 20 ~ 30 ø 9.52 (3/8") 10 ~ 12 ø 12.7 (1/2") 25 ~ 35 ø 15.88 (5/8") 30 ~ 40 – 33 – Measurement B (mm) ø 6.35 0.0~0.5 1.0~1.5 1.5~2.0 ø 9.52 0.0~0.5 1.0~1.5 1.5~2.0 ø 12.7 0.0~0.5 1.0~1.5 2.0~2.5 ø 15.88 0.0~0.5 1.0~1.5 2.0~2.5 Connect the pipes on both liquid and gas sides. Tighten the nuts to the following torque. Liquid side (ø 6.35) 14.0 ~ 18.0 (1.4~1.8) Gas side (ø 9.52) 34.0 ~ 42.0 (3.4~4.2) (ø 12.7) 49.0 ~ 61.0 (4.9~6.1) (ø 15.88) 68.0 ~ 82.0 (6.8~8.2) When refrigerant piping exceeds 5m conduct additional refrigerant charge after refrigerant sweeping. 5m over 15m: Additional charge amount per meter = 10g/m [Example] How much amount of additional charge for 15m piping? (15 - 5)m × 10g/m = 100g 100g for additional charge Press Remove 90±0.5° RMA012A080_091-093_EN.indb 33 05/11/2014 11:50:41

1. Multiple piping type - The Energy Conscious
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