English 13Tightening torqueThe sizes of the shutoff valves on each model and the tightening torquefor each size are listed in the table below.(Refer to figure 27)1. Service port2. Cap3. Hex holes4. Shaft (valve body)5. Seal sectionTo open1. Remove the cap and turn the shaft counterclockwise with the hexa-gon wrench.2. Turn it until the shaft stops.3. Make sure to tighten the cap securely.(For the tightening torque, refer to the item .)To close1. Remove the cap and turn the shaft clockwise with the hexagonwrench.2. Securely tighten the valve until the shaft contacts the main body seal.3. Make sure to tighten the cap securely.(For the tightening torque, refer to the item .)[How to Check How Many Units are Connected]It is possible to find out how many indoor or outside unit in the system are turned on by operating the push button on the PC-board (A1P) of outside unit.Follow the procedure below to check how many indoor or outside units are turned on.NOTEPress the “MODE button” (BS1) if you get confused while operating.This returns to Setting Mode 1 (H1P : OFF, default).11-2 Procedure of Adding Refrigerant charging andcheck operationWARNING Electric Shock Warning• Make sure to close the EL. COMPO. BOX lid before turning on thepower.• Perform the setting on the PC-board (A1P) of the outside unit andcheck the LED display after the power is on via the inspection doorwhich is in the EL. COMPO. BOX lid.(Refer to figure 28)1. EL. COMPO. BOX (1) (right)2. Inspection door3. EL.COMPO. BOX (2) (left)4. Do not open the EL. COMPO. BOX (2) (left) lid or thatinspection door.5. EL. COMPO. BOX (1) (right) lid6. LED (H1~8P)7. Push button (BS1~5)8. Lift the protruding part to open the inspection door.• Use an insulated rod to operate the push buttons via the EL.COMPO. BOX’s inspection door.There is a risk of electric shock if you touch any live parts, since thisoperation must be performed with the power on.72PA type 96PA type 120PA typeLiquid pipeshutoff valveφ3/8The 120PA type corresponds to the φ1/2 - diameteronsite piping using the accessory pipe.Suction gasshutoff valveφ1The 72PA type corresponds to the φ3/4 - diameteronsite piping using the accessory pipe.The 96PA type corresponds to the φ7/8 - diameteronsite piping using the accessory pipe.The 120PA type corresponds to the φ1-1/8 - diameteronsite piping using the accessory pipe.HP/LP gasshutoff valve φ3/4Shutoffvalve sizeTightening torque ft · lbf (Turn clockwise to close)Shaft (valve body) Cap (valve lid) Service portφ 3/8 3.98 - 4.87 Hexagonalwrench 4mm9.95 - 12.178.48 - 10.3φ 1/2 5.97 - 7.30 13.3 - 16.2φ 3/419.9 - 24.3 Hexagonalwrench 8mm 16.6 - 20.3φ 1(LED display: h ...OFF i ...ON j ...Blinking ∗ ...Uncertain) LED displayH1P H2P H3P H4P H5P H6P H7P(1) Press the MODE button (BS1) once at Setting Mode 1 (H1P : off), and set the MON-ITOR MODE (H1P : Blinking). j h h h h h h(2) Press the SET button (BS2) the number of times until theLED display matches that at right.For checking the number ofoutside units : eight times j h h i h h hFor checking the numberof indoor units : five times j h h h i h i(3) Press the RETURN button (BS3) and read the number of units from the display ofH2P through H7P.[Reading Method]The display of H2P through H7P should be read as a binary number, with j standingfor “1” and h standing for “0”.j ∗ ∗ ∗ ∗ ∗ ∗j h j h j j h(4) Press the MODE button (BS1) once. This returns to Setting Mode 1 (H1P : OFF, default). h h i h h h hEx: For the LED display at right, this would be “0 1 0 1 1 0 ”,which would mean 22 units are connected.Note: “000000” indicates 64 units.32 × 0 + 16 × 1 + 8 × 0 + 4 × 1 + 2 × 1 + 1 × 0 = 22 units
