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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page a
INSTALLATION INSTRUCTIONS
– Mini ECO-i System Air Conditioner –
X
for Refrigerant R410A
R410A Models
Indoor Units
Class 7 9 12 18 24 36 48 A
X 4-Way Air Discharge Semi-Concealed Type XHX1252 XHX1852 XHX2452 XHX3652
A 1-Way Air Discharge Semi-Concealed Type AHX0752 AHX0952 AHX1252
U
U Concealed Duct Type UHX0752 UHX1252 UHX1852 UHX2452 UHX3652
Concealed Duct
D DHX3652 DHX4852
D
High-Static Pressure Type
T Ceiling-Mounted Type THX1252 THX1852 THX
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 2 IMPORTANT! Please Read Before Starting reduce strain on your back. Sharp edges or thin aluminum fins This air conditioning system meets strict safety and operating on the air conditioner can cut your fingers. standards. As the installer or service person, it is an impor- tant part of your job to install or service the system so it oper- ates safely and efficiently. When Installing… For safe installation and trouble-free operation, you must: …In
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 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 installed (1) No partition (shaded portion) requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to prote
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 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.” Tubing size: Be sure to use the sizes indicated in the table below. Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution joints (optional). When bending tubing, us
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 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 tubi
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 6 CONTENTS Page Page IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3-11. Checking the Drainage 3-12. Electrical Power Wiring Please Read Before Starting 3-13. How to Install the Ceiling Panel Check of Density Limit Concealed Duct Type (U Type) Precautions for Installation Using New Refrigerant 3-14. Required Minimum Space for Installation and Service 1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 7 Page 6. HOW TO PROCESS TUBING . . . . . . . . . . . . 61 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 . . . . . . . . . . . . . . . . . . . . . . . . . 65 Air Purging with a Vacuum Pump (for Test Run) Preparation 8. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8-1.
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 8 1-3. Type of Copper Tube and Insulation Material 1. GENERAL If you wish to purchase these materials separately from This booklet briefly outlines where and how to install a local source, you will need: the air conditioning system. Please read over the entire set of instructions for the outdoor unit and make sure all 1. Deoxidized annealed copper tube for refrigerant tub- accessory parts listed are with the system before ing. beginning. 2. Foamed
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 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 1 For securing drain hose 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 ins
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 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"
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 11 1-6. Straight Equivalent Length of Joints Design the tubing system by referring to the following table for the straight equivalent length of joints. Table 1-11 Straight Equivalent Length of Joints Unit: ft. Gas tubing size (in. (mm)) 1/2" (12.7) 5/8" (15.88) 3/4" (19.05) 90° elbow 1 1.1 1.4 0.8 0.9 1 45° elbow U-shape tube bend (R2-3/8" – 4" (60 – 100)) 3 3.4 4.1 Trap bend 7.5 9.2 10.5 Y-branch distribution jointEquivalent length conversion not
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 12 1-9. 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. L1 LA L2 LB LC LD n Main tube of unit H1 1st branch 1 2 3 n-1 L3 H2 Unit distribution tube Note: Do not use commercially available T-joints for the liquid tubing. R410A distribution joint * Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor APR-P160
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 13 Always check the gas density Minimum indoor volume & floor area as against the WARNING limit for the room in which the amount of refrigerant is roughly as given in the following table. 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 neces- 9000 1022 Range below sary to ensure that even if the refrigerant gas accidentally 8500 966 the density limit of 8000 909
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2-53/64 2-53/64 07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 14 1-12. Optional Distribution Joint Kit See the installation instructions packaged with the distribution joint kit for the installation procedure. Table 1-17 Model name Cooling capacity after distribution Remarks APR-P160BA 76,400 BTU/h (22.4 kW) or less For indoor unit APR-P160BA Use: For indoor unit (Capacity after distribution joint is 76,400 BTU/h (22.4 kW) or less.) Example Gas tube Liquid tube 4-21/64 4-21/64 3-13/16 3-13/16
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 15 1-13. Example of Tubing Size Selection and Refrigerant Charge Amount Additional refrigerant charging Based on the values in Tables 1-2, 1-3, 1-4 and 1-7, use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below. Required additional = 0.602 × (a) + 0.279 × (b) refrigerant charge (oz) (a): Liquid tubing Total length of ø3/8" (ft.) (b): Liquid tubing Total length of ø1/4" (ft.) Charg
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 16 Example: L1 LA L2 LB LC LN n Main tube of unit 1st branch model 1852 1 2 3 n–1 Unit distribution tube model 0752 model 0952 model 1252 model 1852 Example of each tubing length Main tubing Distribution joint tubing LA = 131 ft. Indoor side LB = 16 ft. 1 = 16 ft. 4 = 20 ft. LC = 16 ft. 2 = 16 ft. 5 = 16 ft. LD = 49 ft. 3 = 7 ft. Obtain charge amount for each tubing size Note that the charge amounts per 3.3 ft. are different for each liquid tubi
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3 ft. 3 ft. 3 ft. 3 ft. 3 ft. 07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 17 2. SELECTING THE INSTALLATION SITE Ceiling-Mounted Type Ceiling 2-1. Indoor Unit AVOID: Wall areas where leakage of flammable gas may be expected. min. 10 in. min. 10 in. places where large amounts of oil mist exist. Front view direct sunlight. NOTE locations near heat sources which may affect the The rear of the indoor unit can be installed flush against the wall. performance of the unit. Air discharge l
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 18 2-2. Outdoor Unit Exhaust fan AVOID: Hot air heat sources, exhaust fans, etc. (Fig. 2-5) damp, humid or uneven locations Heat source Out- DO: door unit choose a place as cool as possible. choose a place that is well ventilated and outside air temperature does not exceed maximum 113°F constantly. Fig. 2-5 allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 2-6) use lug bolts or equal to bolt down
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07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 19 2-3. Air Discharge Chamber for Top Discharge Be sure to install an air discharge chamber (field sup- Air discharge ply) in the field when: it is difficult to keep a space of min. 20 in. between the air discharge outlet and an obstacle. the air discharge outlet is facing a sidewalk and discharged hot air may annoy passers-by. Refer to Fig. 2-10. 2-4. Installing the Unit in Heavy Snow Areas In locations with strong wind, snow-proof ducting (f
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Wind direction 07-056 Mini_ECOi_II_NA 3/19/07 2:40 PM Page 20 2-6. Dimensions of Air-Discharge Chamber Reference diagram for air-discharge chamber (field supply) CHX03652/06052 1 Unit front, air discharge chamber 2 Unit left side, air discharge chamber 2 3 Unit light side, air discharge chamber 4 Reinforcement brackets, 4 locations 9-7/16 1-1/8 3 1-1/8 9-7/16 4 1 Rectangular Rectangular hole hole Rectangular Rectangular hole hole 22-13/32 11 21-13/32 Unit: in. 2-7. Dimensio
