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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page a
INSTALLATION INSTRUCTIONS
– W-2WAY System Air Conditioner –
X
for Refrigerant R410A
R410A Models
Indoor Units A
Class 7 9 12 18 24 36 48
X 4-Way Air Discharge Semi-Concealed Type XHX1252 XHX1852 XHX2452 XHX3652
U
A 1-Way Air Discharge Semi-Concealed Type AHX0752 AHX0952 AHX1252
U Concealed Duct Type UHX0752 UHX1252 UHX1852 UHX2452 UHX3652
D
Concealed Duct
D DHX3652 DHX4852
High-Static Pressure Type
T Ceiling-Mounted Type THX1252 THX1852 THX2452
T
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 2 IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operat- When Installing… ing standards. As the installer or service person, it is an …In a Room important part of your job to install or service the system so it operates safely and efficiently. Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to For safe installation and trouble-free operation, you
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 3 2. The standards for minimum room volume are as fol- Check of Density Limit lows. The room in which the air conditioner is to be (1) No partition (shaded portion) installed requires a design that in the event of refrig- erant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air condition- er, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to prot
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 4 Precautions for Installation Using New Refrigerant 1. Care regarding tubing 1-1. Process tubing Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.” For tubes of ø7/8" (ø22.22 mm) or larger, use C1220 T-1/2H material or H material, and do not bend the tubes. Tubing size: Be sure to use the sizes indicated in the table below. Use a tube cutter when cutting the tubing, and
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 5 3-2. Use R410A exclusive cylinder only. Valve Single-outlet valve (with siphon tube) Liquid refrigerant should be recharged with the cylinder standing on end as shown. Liquid New refrigerant R410A cannot be used for earlier models 1. Compressor specifications are different. If recharging a R22 or R407C compressor with R410A, durability will significantly decrease since some of the materials used for compressor parts are different. 2. Existing tubing
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 6 CONTENTS Page Page IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Concealed Duct Type (U Type) Please Read Before Starting 3-14. Required Minimum Space for Installation and Check of Density Limit Service Precautions for Installation Using New Refrigerant 3-15. Suspending the Indoor Unit New refrigerant R410A cannot be used for earlier models 3-16. Installing the Drain Piping 3-17. Checking the Drainage 1. GENERAL . . . .
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 7 Page 6. HOW TO PROCESS TUBING . . . . . . . . . . . . 63 6-1. Connecting the Refrigerant Tubing 6-2. Connecting Tubing Between Indoor and Outdoor Units 6-3. Insulating the Refrigerant Tubing 6-4. Taping the Tubes 6-5. Finishing the Installation 7. AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . . 67 Air Purging with a Vacuum Pump (for Test Run) Preparation 8. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 8-1. Pr
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 8 1. GENERAL This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the outdoor unit and make sure all accessory parts listed are with the system before beginning. 1-1. Tools Required for Installation (not supplied) 1-3. Type of Copper Tube and Insulation Material 1. Standard screwdriver If you wish to purchase these materials separately from a 2. Phillips head screwdri
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 9 Table 1-2 (4-Way Air Discharge Semi-Concealed) Part Name Figure Q’ty Remarks Full-scale installation diagram 1 Printed on container box Drain hose 1 For securing drain hose Hose band For securing drain hose 1 Drain insulator 1 For drain joint 1 For liquid tube Flare insulator 1 For gas tube White Insulating tape 2 For gas tube joint (heat-resisting) Packing 1 For drain joint Wiring cover 1 For covering erectrical wiring Screw 4 For full-scale instal
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 10 Table 1-5 (Concealed Duct High-Static Pressure) Part Name Figure Q’ty Remarks Washer 8 For suspending indoor unit from ceiling Nut 8 For suspending indoor unit from ceiling 1 For gas tube Flare insulator 1 For liquid tube Drain socket 1 For drain pipe connection Table 1-6 (Ceiling-Mounted) Part Name Figure Q’ty Remarks Full-scale installation diagram 1 Printed on container box Washer 4 For temporarily suspending indoor unit from ceiling 2 T1/8" Fl
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+ 07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 11 1-5. Tubing Length Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below. 1. Main tubing length LM = LA + LB … ≤ 262 ft Main distribution tubes LC – LG are selected according to the capacity after the distribution joint. 2. 3. The outdoor connection main tubing ( B portion) is determined by the total capacity of the outdoor units that are connected to the tube
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 12 1-6. Tubing Size Table 1-9 Main Tubing Size (LA) Unit: in. (mm) BTU/h 95,500 153,600 191,100 249,100 307,100 (kW) (28.0) (45.0) (56.0) (73.0) (90.0) Total system horsepower 10 16 20 26 32 10 16 16 Combined outdoor units 10 16 10 10 16 ø7/8" ø1-1/8" ø1-1/4" Gas tubing (ø22.22) (ø28.58) (ø31.75) ø3/8" ø1/2" ø5/8" ø3/4" Liquid tubing (ø9.52) (ø12.7) (ø15.88) (ø19.05) *1: If future extension is planned, select the tubing diameter based on the total ho
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 13 1-7. Straight Equivalent Length of Joints Design the tubing system by referring to the following table for the straight equivalent length of joints. Table 1-13 Straight Equivalent Length of Joints Unit: ft. 1/2" 5/8" 3/4" 7/8" 1" 1-1/8" 1-1/4" 1-1/2" Gas tubing size (in. (mm)) (12.7) (15.88) (19.05) (22.22) (25.4) (28.58) (31.8) (38.1) 90° elbow 1 1.1 1.4 1.6 1.7 1.9 2.3 2.6 45° elbow 0.8 0.9 1 1.2 1.3 1.4 1.7 1.9 U-shape tube bent (R2-3/8" – 4" (
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 14 Minimum indoor volume & floor area as against the amount Always check the gas density of refrigerant is roughly as given in the following table. WARNING limit for the room in which the unit is installed. 3 2 ft. ft. 1-10. Check of Limit Density 10000 1136 9500 1079 When installing an air conditioner in a room, it is necessary to 9000 1022 Range below 8500 966 ensure that even if the refrigerant gas accidentally leaks out, its the density limit of
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2-53/64 2-53/64 4-31/64 4-31/64 07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 15 1-12. Optional Distribution Joint Kits See the installation instructions packaged with the distribution joint kit for the installation procedure. Table 1-18 Model name Cooling capacity after distribution Remarks 1. APR-CHP680BA 232,000 BTU/h (68.0 kW) or less For outdoor unit 2. APR-CHP1350BA 460,700 BTU/h (135.0 kW) or less For outdoor unit 3. APR-P160BA 76,400 BTU/h (22.4 kW) or less For indoor unit 4. APR-P680BA 2
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2-53/64 2-53/64 2-53/64 4-31/64 4-31/64 2-53/64 07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 16 3. APR-P160BA Use: For indoor unit (Capacity after distribution joint is 76,400 BTU/h (22.4 kW) or less.) Example: Gas tubing Liquid tubing 4-21/64 4-21/64 3-13/16 3-13/16 B C B DE B C D A A Distribution Distribution C Insulation B Insulation Joint Joint D E C Unit: in. Table 1-21 Size of connection point on each part (Shown are inside diameters of tubing) Size Part A Part B Part C Part D Part E ø3/4"
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 17 1-13. Example of Tubing Size Selection and Refrigerant Charge Amount Additional refrigerant charging Based on the values in Tables 1-9, 10, 11, 12 and 15, use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below. Required additional = 3.93 × (a) + 2.78 × (b) + 1.99 × (c) + 1.38 × (d) + 0.602 × (e) + 0.279 × (f) refrigerant charge (oz) (a) : Liquid tubing Total length of ø7/8" (ft.) (d
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 18 Obtain liquid tubing size from Tables 1-9, 10, 11, 12 and 15. Main tubing LA = ø5/8 (ft.) (Total capacity of indoor unit is 179,400 BTU/h) The longest tubing length in this example LB = ø1/2 (ft.) (Total capacity of indoor unit is 131,600 BTU/h) (LA = 131 ft.) LC = ø3/8 (ft.) (Total capacity of indoor unit is 83,800 BTU/h) Distribution joint tubing Outdoor side A: ø3/8 (ft.) B: ø3/8 (ft.) (from outdoor unit connection tubing) Indoor side 1: ø3/8 (
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 19 Ceiling-Mounted Type 2. SELECTING THE INSTALLATION SITE Ceiling 2-1. Indoor Unit Wall AVOID: areas where leakage of flammable gas may be expected. min. 10 in. min. 10 in. Front view places where large amounts of oil mist exist. NOTE direct sunlight. The rear of the indoor unit can be installed flush against the wall. locations near heat sources which may affect the Air performance of the unit. discharge locations where external air may
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 20 2-2. Outdoor Unit Exhaust fan AVOID: Hot air heat sources, exhaust fans, etc. Heat damp, humid or uneven locations source Out- door indoors (no-ventilation location) unit DO: choose a place as cool as possible. Fig. 2-5 choose a place that is well ventilated. allow enough room around the unit for air intake/ Example of installation of 2 units exhaust and possible maintenance. (When wall height is below 6 ft.) Installation Space * Mor
