Instruction/ maintenance manual of the product UHW2672R Sanyo
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X K T U C RC (WD) RC (WL) TRC SC 85464359863005 ©SANY O 2007 – Split System Heat Pump Air Conditioner – INST ALLA TION INSTR UCTIONS Model Combinations Combine indoor and outdoor units only as listed below . Indoor Units and Outdoor Units * When air discharge chamber is installed.
2 IMPOR T ANT! Please Read Bef ore Star ting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an impor- tant par t of your job to install or service the system so it oper- ates saf ely and efficiently .
2. The standards for minimum room v olume are as f ollows . (1) No par tition (shaded por tion) (2) When there is an eff ective opening with the adja- cent room f or ventilation of leaking refrigerant gas (opening without a door , or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).
4 R407C tools Item compatible Remarks with R410A? Manif old gauge Y es No T ypes of refrigerant, refr igerating machine oil, and pressure gauge are diff erent. Charge hose Y es No T o resist higher pressure , material must be changed. V acuum pump Y es Y es Use a conv entional v acuum pump if it is equipped with a check v alv e.
5 3-2. Use R410A e xclusive cylinder only . When charging with a refrigerant cylinder , use an electronic scale f or charging refrigerant. In this case, if the v olume of refrigerant in the cylinder becomes less than 20% of the fully-charged amount, the composition of the refrigerant star ts to change.
6 Concealed-Duct T ype (U T ype) . . . . . . . . . . . . . . 51 3-22. Required Minimum Space f or Installation and Ser vice 3-23. Suspending the Indoor Unit 3-24. Installing the Drain Piping 3-25. Checking the Dr ainage 3-26. Increasing the F an Speed 4.
7 <RCS-BH80U A.WL> 7-12. Separate T ype Signal Receiving Unit Installation 7-13. Electrical Wir ing 7-14. T est Run Switch 7-15. Misoperation Alarm Indicators 7-16. Basic Wiring Diagram 7-17. Wiring System Diagram f or Group Control 7-18. Wiring System Diagram f or Multiple Remote Controllers <RCS-SH1U A> 7-19.
8 1. GENERAL This booklet briefly outlines where and how to install the air conditioning system. Please read ov er the entire set of instructions for the indoor and outdoor units and make sure all accessory par ts listed are with the system bef ore beginning.
P art Name Fi g ure Q’ty Remark s F u ll- s cale i ns tallatio n dia g ram 1 Flare i nsu lator 2 Wa s her 8 I nsu lati ng tape 1 Ho s e ba n d2 Pa ck i ng 1 Drai n i nsu lator 1 Drai n ho s e1 Drai .
S pecial wa s her 4 Drai n i nsu lator 1 Flare i nsu lator 1 S et Drai n ho s e adaptor 1 Drai n ho s e clamp 4 I nsu lati ng tape 2 1 Vi n yl clamp 2 F u ll- s cale i ns tallatio n 1 dia g ram S eali.
11 Ta b le 1-5 (Acce ss orie s for the Wired Remote Controller) P art Name Fi g ure ‘ Q’ty P art Name Fi g ure ‘ Q’ty 1 S pacer s 2 2 Wire joi n t s 4 Wood s crew s 2 Wired remote co n troller (come s with 7-7/ 8 i n . wire) Machi n e s crew s M4 × 1 i n .
12 Ta b le 1-7 (Acce ss orie s f or the Timer Remote Controller) P ar t Name Fi g ure ‘ Q’ty P art Name Fi g ure ‘ Q’ty T imer Remote Co n troller 1 S pacer s 2 1W o o d s crew s 2 Clamp s Machi n e s crew s M4 × 1 i n . Co nn ecti ng wiri ng le ng th 4 ft.
13 1-5. T ubing Size Single type Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. The length of the refrigerant tubes between the indoor and outdoor units are limited by the ele v ation diff erence between the 2 units.
14 Limit of ele vation diff erence between the 2 units No additional charge of compressor oil is necessar y . * 1 If total tubing length becomes 100 to 165 ft., charge additional refrigerant by 0.43 oz./ft. Models C(H)2672R C(H)3072R C(H)3672R C(H)4272R T ubing Data T ubing size Liquid tube in.
15 CAUTION CAUTION W ARNING 1. This unit requires no additional refrig- erant charge up to 100 ft. tubing length. In case of more than 100 ft., additional refrigerant charge is required. Refer to T able 1-11. 2. In case of multi type installation, indoor units should be installed within the same room.
16 2. SELECTING THE INST ALLA TION SITE 2-1. Indoor Unit A V OID: areas where leakage of flammable gas ma y be e xpected. places where large amounts of oil mist e xist. direct sunlight. locations near inv er ter lamps which ma y aff ect the perf or mance of the unit.
2-2. Outdoor Unit A V OID: heat sources, e xhaust f ans, etc. (Fig. 2-1) damp , humid or une ven locations DO: choose a place as cool as possible . choose a place that is well v entilated and outside air temperature does not e xceed maximum 115°F constantly .
18 Fig. 2-5 Fig. 2-6 Fig. 2-7 2-3. Air-Disc harge Chamber for T op Discharge Be sure to install an air discharge chamber in the field when: it is difficult to keep a space of min. 20" betw een the air discharge outlet and an obstacle. the air discharge outlet is f acing a sidew alk and discharged hot air ma y bother passers-by .
2-6. Dimensions of Wind Ducting Reference diagram f or air-disc harge chamber (field suppl y) 1 2 (25/32) (25/32) (25/32) (25/32) 21-13/16 9-27/32 22-7/16 23-15/32 1-1/16 5-5/32 5-3/16 9-27/32 9-27/32.
Dimensions of Outdoor Unit with air-disc harge chamber (field supply) 2672R / 3072R / 3672R unit with STK-DR V80U 13-3/8 2-17/32 21-13/16 1/2 6-1 1/16 25-31/32 4-5/16 1/2 1/2 14-31/32 15-15/16 19/32 2.
21 Reference diagram f or air-disc harge chamber (field suppl y) C(H)2672R / 3072R / 3672R / 4272R with STK-DR V80U & DRE140A Required space around outdoor unit If the air discharge chamber is used, the space shown belo w must be secured around the outdoor unit.
22 17-15/32 25-13/32 9-3/16 28-13/16 15-9/32 47-19/32 2 3 11-7/8 3-31/32 9-3/16 28-13/16 1-13/16 47-19/32 30-3/32 1 4 5-29/32 17-23/32 19-11/16 25-32 13-5/16 19-11/16 1-5/8 28-3/4 30-5/8 5/8 3-3/4 19-.
23 1 1-29/32 28-13/16 Wind direction Wind direction Wind direction Wind direction Wind direction Wind direction 48-7/16 47-19/37 37 24-7/8 15-15/16 14-31/32 13/32 19/32 25/32 25/32 30-3/32 25-13/32 7-.
Reference diagram f or snow-pr oof vents – 1 Space requirements for setting – (1) C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U Min. I Min. I Min. M Min. N Min. H Min. J (1) Single-unit installation (2) Multiple-unit installation (2 or more units) [Obstacle to the front of unit] Min.
25 Reference diagram f or snow-pr oof vents – 2 Space requirements for setting – (2) C(H)2672R / 3072R / 3672R / 4272R with STK-BDRE80A & STK-BDR140U Mi n . 11-1 3 / 3 6 Mi n . 11-1 3 /16 Mi n . 3 9- 3 / 8 Mi n . 7-7/ 8 Mi n . 59-1/16 Mi n . 7 8 - 3 /4 0 Mi n .
X 26 3. HO W T O INST ALL THE INDOOR UNIT 4-W a y Air Discharge Semi-Concealed T ype (X T ype) 3-1. Suspending the Indoor Unit This unit uses a drain pump .
27 X 3-3. Placing the Unit Inside the Ceiling (1) When placing the unit inside the ceiling, deter mine the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 3-4) The size of the opening f or the indoor unit can be confir med b y attaching the full-scale installation diagram beneath the unit.
X 28 3-4. Installing the Drain Piping (1) Prepare standard hard PVC pipe f or the drain and use the supplied drain hose and hose band to pre- vent w ater leaks. The PVC pipe must be purchased separately . The transparent par t allo ws you to chec k drainage.
29 X 3-5. Checking the Draina ge After wiring and piping are completed, use the follo w- ing procedure to check that the w ater will drain smooth- ly . For this , prepare a buc ket and wiping cloth to catch and wipe up spilled water . (1) T ake off the tube co ver and through the opening, slowly pour about 43 oz.
X 30 Ceiling P anel 3-6. Before Installing the Ceiling P anel (1) Remov e the air-intake g rille and air filter from the ceiling panel. (Figs. 3-13 and 3-14) (a) Remov e the 2 scre ws on the latch of the air- intake g rille.
31 X 3-7. Installing the Ceiling P anel (1) Lift the ceiling panel and position it to align the panel hook with the panel catch of the indoor unit. The ceiling panel must be mounted in the correct direc- tion. Note that the 2 catches of the panel diff er in size .
X 32 3-9. Duct for Fresh Air There is a duct connection par t on side of the indoor unit. (Fig. 3-16) An optional air-intake plen um (including duct connection bo x and flange) can be attached to the indoor unit. (1) Accessories Check that the f ollo wing par ts are in the bo x when unpacking.
33 X (d) Installing the ceiling panel Attach the ceiling panel to the chamber . Dra wing the panel downw ards sets the panel in position temporarily with the panel catch (at 2 locations). Remov e the sock et cov er of the air-intak e plenum and pass the 8P sock ets through it.
34 K W all-Mounted T ype (K T ype) 3-10. Removing the W all Fixture from the Unit Remov e and discard the set scre ws and take off the rear panel. (Fig. 3-19) T ubing can be e xtended in 3 directions as shown in Fig. 3-20. Select the direction that provides the shor test run to the outside unit.
35 K One hole is required f or the air conditioner tubing, and ma y be either on the left or right side. (Also see section 3-14. Preparing the Indoor Side T ubing.) (1) T ape the full-scale installation diagram on the w all at the location selected. Make sure the unit is horizontal using a le vel or tape measure to measure down from the ceiling.
36 K Remov e and discard the set scre ws and take off the wall fixture . (Fig. 3-29) (1) T ape the full-scale installation diagram on the w all at the location selected. Make sure the unit is hori- zontal using a le v el or tape measure to measure down from the ceiling.
37 K 3-12. Installing the Rear P anel on the W all Be sure to confirm that the wall is strong enough to suspend the unit. See either Item a) or b) below depending on the w all type. a) If W ooden Wall (1) Attach the rear panel to the wall with the 10 scre ws provid- ed.
38 K Confir m that the w all is strong enough to suppor t the unit. a) If W ooden Wall (1) Attach the wall fixture to the w all with the 9 screws provided.
39 K 3-13. Remove the Grille to Install the Indoor Unit Basically , these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps given belo w: How to remo ve the grille (1) Set the 2 flaps in the horizontal position.
40 K How to Remo ve the Grille (1) Remov e the plastic cov er . (Fig. 3-42) (2) Remov e the clamp f or the wiring connector . (Fig. 3-43) (3) Disconnect the 2 wiring connectors. (Fig. 3-44) (4) Set the flap in the horizontal position. (Fig. 3-45) (5) Remov e the 3 screws .
41 K 3-14. Preparing the Indoor Side T ubing Arrangement of tubing by directions (a) Right tubing The cor ner of the right frame needs to be cut b y a hacksa w or the like . (Fig. 3-46) (b) Right-rear or left-rear tubing In this case, the corner of the frame need not be cut.
42 K T ubing can be e xtended in 4 directions as shown in Fig. 3-54. Arrangement for Left T ubing (a) Cut out the left tubing outlet. (Fig. 3-55) Arrangement for Right T ubing (a) Cut out the right tubing outlet using a hacksaw . (Fig. 3-56) Arrangement for Left-rear and Right-rear T ubing (a) It is not necessar y to cut a hole.
43 K 3-16. Wiring Instructions for Inter -Unit Connections (1) Inser t the inter-unit wiring (according to local electrical codes) into the through-the-wall PVC pipe. Run the wiring tow ard the indoor side allowing appro x. 10 inches to e xtend from the wall f ace.
Wall Plastic cover Rear panel Wiring 5" Wall Wall fixture Connector Wiring 5" 44 K (1) Inser t the inter-unit wiring (according to local codes) into the through-the-wall PVC pipe . Run the wiring toward the indoor side allo wing approx. 5" to e xtend from the wall f ace.
K (1) Shape the refrigerant tubing so that it can easily go into the wall hole . (Fig. 3-62) CAUTION If using a stepladder , be careful to keep your balance and not fall off .
46 K 3-17. Shaping the T ubing (1) Shape the refrigerant tubing so that it can easily go into the hole. (Fig. 3-69) (2) Push the wiring, refr igerant tubing and dr ain hose through the hole in the wall. Adjust the indoor unit so it is securely seated on the wall fixture .
47 T Ceiling-Mounted T ype (T T ype) 3-19. Suspending the Indoor Unit (1) Place the full-scale diagram (supplied) on the ceiling at the spot where you w ant to install the indoor unit.
48 T (5) Bef ore suspending the indoor unit, remov e the 2 screws on the latch of the air-intak e grilles, open the grilles, and remov e them b y pushing the claws of the hinges as shown in Fig. 3-78. Then remo ve both side panels sliding them along the unit tow ard the front after removing the two scre ws which fix them.
49 T Ceiling surface . x o r p p A h c n i 1 Suspension bolt Washer (supplied) Nut (field supply) Fig. 3-82 Fig. 3-83 Fig. 3-84 (7) Suspend the indoor unit as f ollows. (a) Mount a washer and two he xagonal nuts on each suspension bolt as shown in Fig.
50 T 3-20. Duct for Fresh Air There is a duct connection por t (knock-out hole) at the right-rear on the panel top of the indoor unit for dra wing in fresh air . If it is necessary to draw in fresh air , remov e the cov er b y knocking it out and connect the duct to the indoor unit through the connection por t.
51 U Concealed-Duct T ype (U T ype) 3-22. Required Minimum Space f or Installation and Service This air conditioner is usually installed abov e the ceiling so that the indoor unit and ducts are not visible . Only the air intake and air outlet ports are visible from belo w .
52 U 3-23. Suspending the Indoor Unit Depending on the ceiling type: • Inser t suspension bolts as shown in Fig. 3-93 or • Use existing ceiling suppor ts or construct a suitable suppor t as shown in Fig.
53 U Fig. 3-97 shows an e xample of installation. 3-24. Installing the Drain Piping (1) Prepare standard hard PVC pipe f or the drain and use the supplied hose band to pre vent w ater leaks.
54 U CAUTION Do not install an air bleeder tube as this ma y cause water to spray fr om the drain pipe outlet. (Fig. 3-100) If it is necessary to increase the height of the drain pipe, the section directly after the connection port can be raised a maximum of 19-11/16 in.
55 U 3-26. Increasing the Fan Speed If e xter nal static pressure is too great (due to long e xtension of ducts, f or e xample), the air flow v olume ma y drop too low at each air outlet.
56 4. HO W T O INST ALL THE OUTDOOR UNIT 4-1. Installing the Outdoor Unit Use concrete or a similar material to create the base, and ensure good drainage. Ordinarily , ensure a base height of 2 in. or more. If a dr ain pipe is used, or f or use in cold-weather regions, ensure a height of 6 in.
57 5. ELECTRICAL WIRING 5-1. General Precautions on Wiring (1) Bef ore wiring, confir m the rated v oltage of the unit as shown on its nameplate , then carr y out the wiring closely follo wing the wiring diagram.
58 5-3. Wiring System Diagrams Basic wiring diagram f or standard control U2 U1 L1 L2 U1 U2 1 2 G 2 1 WHT Remote co n troller D A I n door un it B L1 L2 Gro un di ng li n e BLK 2 1 I n ter- un it powe.
59 W ARNING Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard ma y also exist. Therefore, ensure that all wiring is tightly connected.
60 RC (WD) 6-1. Installation Site Selection Install the remote controller at a height of between 3–5 ft. abov e the floor . Do not install the remote controller in a place where it will be e xposed to direct sunlight or near a window or other place where it will be e xposed to the outside air .
61 RC (WD) (1) When you open the decor ative co ver , you will see two gaps under the remote controller . Inser t a coin into these gaps and pr y off the bac k case. (Fig. 6-4) (2) Attach the back case with the 2 small scre ws provided. Using a scre wdriver , push open the cut- outs on the back case .
62 RC (WD) 6-3. Basic Wiring Diagram Use shielded wires f or inter-unit control wiring and ground the shield on both sides. (Fig. 6-5) Otherwise misoperation because of noise ma y occur . Wiring procedure Install the wiring according to the above wiring diagr am.
63 RC (WD) 6-4. Wiring System Diagram f or Group Contr ol This diagram sho ws when se ver al units (maximum of 8) are controlled by a remote controller (main unit).
64 RC (WD) 6-5. Wiring System Diagram f or Multiple Remote Controller s When Installing Multiple Remote Controller s This multiple remote controller system is used f or operating the unit(s) at diff erent positions. (A maxim um of 2 remote controllers can be installed.
65 RC (WD) 6-7. T roub le Diagnostics (1) Contents of remote controller s witch alar m displa y Remote co n troller i s detecti ng error s i gn al from i n door un it E01 E02 E10 E11 E14 E0 3 E0 8 E09.
66 RC (WD) P09 P01 P10 P0 3 P04 P05 P15 P19 P20 P22 P26 P29 P 3 1 H01 F01 F02 F10 F04 F06 F07 F0 8 F12 F29 Ceili ng pa n el co nn ectio n fail u re I n door protectio n Fa n protective thermo s tat Float s witch Di s char g e temperat u re tro u ble Hi g h pre ssu re s witch or compre ss or motor thermal protector i s activated.
67 RC (WD) (2) LED Indicator Messages on Outdoor Control PCB Power ON sequence 1. No communication from indoor units in system 2. Communication received from 1 or more indoor units in system 3. Regular communication OK (Capacity and unit quantity match) If it is not possible to advance to 3, repeats 1 → 2.
68 RC (WL) Whe n us i ng thi s air co n ditio n er with the wirele ss remote co n troller it may s ometime s be impo ss ible to cha ng e the operatio n mode s while other i n door un it i s r unn i ng .
69 RC (WL) 7-2. Room Tem p erature S en s or S ettin g The room temperat u re s e ns or s are b u ilt i n to the i n door un it a n d the wirele ss remote co n troller. Either of the s e room temperat u re s e ns or s ca n operate. The s y s tem i s s hipped from the factory s et to the i n door un it s e ns or.
X 70 <RC S - S H 8 0UA.WL> 4-Way Air Di s char g e S emi-concealed Ty p e (X Ty p e) 7-5. Indicator S ection In s tallation Remove the ceilin g p anel and indicator cover and in s tall the indicator s ection. (1) Remove the ceili ng pa n el. (2) Remove the cor n er cover behi n d the mark s ec- tio n .
71 T Cover A Cover A Pa n el I n dicator s ectio n S ide pa n el I n dicator s ectio n Cover B (Not us ed whe n the i n dicator s ectio n i s i ns talled.) Air i n take g rille Rece ss Rece ss 7- 8 .O p eratin g Controller In s tallation Do not twi s t the o p eratin g controller wire s to g ether with the p ower s u pp ly wire s .
72 RC (WL) 7-9. Electrical Wirin g Co nn ectio n method (1) Co nn ect W1 to the i n door PCB WL co nn ector. (2) Co nn ect W 3 from the i n dicator s ectio n with W2 from the operati ng co n troller us i ng the relay co nn ector. 7-10. Te s t Run S witch 7-10-1.
73 RC (WL) 7-11. Mi s o p eration Alarm Indicator s Alarm i n dicator lamp s o n the i n door un it i n dicate the error ca us e if the air co n ditio n er fail s to operate u po n bei ng s witched o n . The po ss ible alarm i n dica- tio ns are g ive n i n Table 7-1.
74 RC (WL) <RC S -BH 8 0UA.WL> If the s i g nal receivin g unit i s in s talled near a ra p id- s tart or inverter ty p e fluore s cent lam p (neither one u s e s g low lam ps ), it may b e im p o ss i b le to receive s i g nal s from the wirele ss remote control- ler.
Whe n us i ng the s i gn al receivi ng un it o n a wall with the fro n t expo s ed, choo s e a wall su rface that the s i gn al receivi ng un it ca n be mo un ted o n . (1) I ns ert a s ta n dard (mi nus ) s crewdriver i n to the s lot o n the lower s ide of the s i gn al receivi ng un it a n d pry off the back ca s e a s s how n i n Fi g .
76 RC (WL) 7-1 3 . Electrical Wirin g Be s ure to do the wirin g correctly (incorrect wirin g will dama g e the e q ui p ment). Recomme n ded wire diameter a n d allowable le ng th for s i gn al receivi ng un it wiri ng a n d it s bra n ch wiri ng : AWG #1 8 , MAX 1, 3 00 ft.
7-15. Mi s o p eration Alarm Indicator s A bli n ki ng lamp for other tha n the s i gn al receivi ng un it filter s how s that a problem ha s occ u rred i n the un it, s o make a n i ns pectio n . (Refer to s ervici ng i n formatio n i n the s ervice ma nu al, etc.
78 RC (WL) 7-16. Ba s ic Wirin g Dia g ram Be s ure to do the wirin g correctly (incorrect wirin g will dama g e the e q ui p ment). CAUTION U s e s hielded wire s for i n ter- un it co n trol wiri ng a n d g ro un d the s hield o n both s ide s . (Fi g .
79 RC (WL) 7-17. Wirin g S y s tem Dia g ram for Grou p Control Thi s dia g ram s how s whe n s everal un it s (maxim u m of 8 ) are co n trolled by a s i gn al receivi ng un it (mai n un it). I n thi s ca s e, a s i gn al receivi ng un it ca n be co nn ected at a n y i n door un it.
80 RC (WL) 7-1 8 . Wirin g S y s tem Dia g ram for Multi p le Remote Controller s When in s tallin g multi p le remote controller s Thi s m u ltiple s y s tem i s us ed for operati ng the un it( s ) at differe n t po s itio ns . (A maxim u m of 2 s i gn al receivi ng un it s ca n be i ns talled.
81 RC (WL) Sliding switch 1 Wireless remote controller transmitter V erify that sliding switch 1 is in the “K” position. <For 3072R, 3672R> S: Flap model (4-direction, ceiling suspended) K: Swing-only model (wall-mounted), settings completed N: No-flap model (built-in) SKN V erify that sliding switch 1 is in the “S” position.
82 RC (WL) 7-21. Preparing for the Test Run 7-21-1. Changing the room temperature sensor 7-21-2. Using the remote controller 7-21-3. Test run Room temperature sensors are installed inside the indoor unit and the wireless remote controller. Either room temperature sensor can be used.
7-22. Precautions Request that the customer be present at the time the test run is performed. Explain the Operation Manual to the customer, and then have the customer actually operate the system. Be sure to pass the manual and warranty certificate to the customer.
84 RC (WL) 7-23. When Setting Indoor Unit Control PCB Switc h for W all-Mounted Indoor Unit When using either the wired or wireless remote controller , ref er to the tab les below and accordingly slide the s witch on the indoor unit control PCB. If this setting is not made correctly an alarm will occur.
SC 85 8 . HOW TO IN S TALL THE S Y S TEM CONTROLLER (OPTIONAL PART) Fi g . 8 -1 S y s tem co n troller S witch box (with cover) M4 × 1- 3 /16 i n . S crew s (2) Flat-top S crew Back ca s e Gap Coi n Gap Fi g . 8 -2 Do not s u pp ly p ower to the unit or try to o p erate it until the tu b in g and wirin g to the outdoor unit are com p leted.
SC 86 8 -2. Electrical Wirin g B1 I n door un it PCB CRV (CN91: WHT) 2P termi n al ba s e I n door un it S y s tem co n troller Acce ss ary co nn ector Wire joi n t co nn ectio n B2 B 3 B4 B5 B6 U1 U2 How to connect electrical wirin g (1) Co nn ect B1, B2 to i n door PCB CRV co nn ector us i ng acce ss ary 2P co nn ector.
87 SC 8 - 3 . Addre ss S witch S ettin g 1 ON Main/ s u b s election s witch OFF: S y s tem co n troller operate s a s mai n co n troller. ON: S y s tem co n troller operate s a s su b-co n troller.
88 SC 1 ON Weekly timer in p ut s witche s S y s tem co n troller operatio n ca n be s et whe n weekly timer activate s (ON/OFF). S W2 I n ca s e of Remote co n trol mode, us e or . I n ca s e of ZONE 1, 2, 3 , 4 mode, ALL, all i n door un it s mea ns o n e of ZONE 1, 2, 3 , 4.
8 -4. Mode S ettin g Accordi ng to the f un ctio n of each s y s tem co n troller, s et S W1 a s s how n i n Fi g . 8 -5. (1) Ce n tral co n trol/Remote co n trol mode Central control mode The s y s tem co n troller i s us ed a s the ce n tral co n trol eq u ipme n t.
SC 90 8 -5. How to Perform Zone Re g i s tration To operate the s y s tem co n troller properly, zo n e re g i s tratio n i s req u ired after fi n i s hi ng the te s t r un (a n d after s etti ng all i n door un it addre ss e s ) us i ng o n e of the followi ng method s .
SC (a) Zone re g i s tration u s in g the remote controller (RC S - S H 8 0UG) (Determi n atio n of ce n tral addre ss ) I n thi s ca s e, after co n firmi ng which i n door un it i s co nn ected to the remote co n troller a n d that the air co n ditio n er i n the OFF s tate, yo u s et the ce n tral addre ss e s o n e at a time.
SC 92 ( b ) Zone re g i s tration u s in g the s y s tem controller ( S HA-KC64UG) I n thi s ca s e, yo u s et all ce n tral addre ss e s by the s y s tem co n troller at o n ce ma nu ally. (1) Pre ss the a n d ZONE b u tto ns at the s ame time for more tha n 4 s eco n d s .
SC 93 (c) Automatic zone re g i s tration u s in g the s y s tem controller ( S HA-KC64UG) (1) Pre ss the a n d b u tto ns at the s ame time for more tha n 4 s eco n d s . a n d CODE No. C1 will fla s h. (2) S elect CODE No. C2 by pre ss i ng a n d ( ) b u tto n a n d pre ss the b u tto n .
SC 94 How to check for overla pp in g of central addre ss No s . (1) Pre ss the a n d b u tto ns at the s ame time for more tha n 4 s eco n d s . a n d CODE No. C1 will fla s h. (2) S elect CODE No. C 3 by pre ss i ng , ( ) b u tto n a n d pre ss the b u tto n .
SC 95 A ss i gn i n door un it addre ss e s to the de s ired po s itio ns (ce n tral addre ss e s ) ma nu ally. 2. 1. For g ro u p co n trol, o n ly the mai n i n door un it s ho u ld be a ss i gn ed. Su b i n door un it s ca nn ot be a ss i gn ed. ZONE GROUP Ce n tral addre ss Ce n tral addre ss I n door un it addre ss (UNIT No.
SC 96 8 -6. Connection with Other E q ui p ment ON/OFF t u p n i l a t i g i D Alarm O u tp u t commo n CPEV AWG#16 ALL ON (+) CX TX ALL OFF (+) I n p u t commo n COM +24 CPEV AWG#16 e m a N s l a n i.
97 9. HO W T O PROCESS TUBING The liquid tubing side is connected by a flare n ut, and the gas tubing side is connected by br azing. 9-1. Connecting the Refrigerant T ubing Use of the Flaring Method Many con v entional split system air conditioners employ the flaring method to connect refr igerant tubes which run between indoor and outdoor units.
98 Fig. 9-7 When removing the flare nuts from the tubing connections, or when tightening them after connecting the tubing, be sure to use 2 monke y wrenches or spanners as shown.
99 Fig. 9-10 Fig. 9-9 Fig. 9-8 Fig. 9-11 Do not use a spanner to tighten the valv e stem caps . Doing so ma y damage the valv es . Depending on the installation conditions, applying e xcessive torque ma y cause the n uts to crack.
100 Fig. 9-12 Fig. 9-13 9-4. T aping the T ubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes per mit) should be taped together with ar moring tape in 1 bundle . T o pre vent condensation from o v erflowing the drain pan, keep the dr ain hose separate from the refrigerant tubing.
Outlet Inlet V acuum pump Manifold valve Pressure gauge Lo Hi Charge hose Outdoor unit Liquid tube Gas tube Nitrogen gas cylinder (In vertical standing position) Close Close Open Cylinder valve C Fig. 10-1 Fig. 10-2 Fig. 10-3 10. LEAK TEST , EV A CU A TION AND ADDITIONAL REFRIGERANT CHARGE P erf orm an air-tightness test for this pac kage A/C .
C 102 Fig. 10-4 (3) Pressur ize the system up to 4.15 MP a (42 kgf/cm 2 G) with dry nitrogen gas and close the cylinder valv e when the gauge reading reaches 4.15 MP a (42 kgf/cm 2 G). Then, test f or leaks with liquid soap . (4) Do a leak test of all joints of the tubing (both indoor and outdoor) and both gas and liquid ser vice v alv es.
C Fig. 10-5 Fig. 10-6 10-3. Charging Additional Refrigerant Charging additional refrigerant (calculated from the liquid tube length as shown on page 14, Amount of additional refrigerant charge) using the liquid tube ser vice v alv e. (Fig. 10-5) Use a balance to measure the refrigerant accurately .
104 11. TEST RUN 11-1. Preparing for T est Run Before attempting to start the air conditioner , chec k the follo wing: (1) All loose matter is remov ed from the cabinet especially steel filings, bits of wire , and clips. (2) The control wiring is correctly connected and all electrical connections are tight.
105 X, T , U , K T ype 11-2. Caution This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor unit. The indoor and outdoor unit control PCBs utilize a semiconductor memory element (EEPROM). The set- tings required for operation were made at the time of shipment.
106 11-4. Items to Check Bef ore the T est Run (1) T urn the breaker ON at least 12 hours in advance in order to energiz e the crank case heater . (2) Fully open the closed valv es on the liquid tube and gas tube sides . 11-5. T est Run Using the Remote Controller (1) Press and hold the remote controller b utton for 4 seconds or longer .
107 Wired remote controller di sp la y Cau s e Correction Nothi ng i s di s play ed Nothi ng i s di s play ed E 0 1 di s play ed E 0 2 di s play ed E 0 9 di s play ed E 1 4 di s play ed E 0 4 di s pla.
108 11-8. Examples of Wiring Diagrams 11-8-1. Basic wiring diagram 1 Single-type system Be careful to av oid mis wiring when connecting the wires. (Mis wiring will damage the units.) 1 2 12 0 L2 U1 RC U2 L1 U2 U1 G 1 2 S y s tem addre ss rotary s witch ( S et to “0” at the time of s hipme n t.
109 11-8-2. Basic wiring diagram 2 Group control (when a central control de vice is not used) Simultaneous-operation m ulti system A maximum of 8 indoor units can be connected to 1 remote controller . Set the system address (refrigerant tubing system address) before turning on the remote power s witch.
11-8-3. Setting the outdoor unit system addresses F or basic wiring diagram 2 (Set the system addresses: 1, 2, 3...) ON 1 2 0 System address rotary switch (Set to “0” at time of shipment) System a.
111 11-8-5. Indicating (marking) the indoor and outdoor unit combination number Indicate (mark) the number after automatic address setting is completed.
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