Sanyo XHX1252, XMHX1252, XMHX1852, AHX0752, AHX0952 Installation Instructions Manual
...
INSTALLATION INSTRUCTIONS
– ECO-i System Air Conditioner –
This air conditioner uses the new refrigerant R410A.
Indoor Units
Class 7 9
4-Way Air Discharge
X
Semi-Concealed
4-Way Air Discharge
XM
Mini Semi-Concealed
1-Way Air Discharge
A
Semi-Concealed
U Concealed Duct Type
Slim Concealed
UM
Duct Type
Concealed-Duct High
D
Static Pressure
T Ceiling-Mounted
K Wall-Mounted Type
F Floor-Standing Type
NOTE
External diameter of service port R410A: 5/16"
Model Combinations
12 15 18 19 24 36 48 54
XHX1252 XHX1852 XHX2452 XHX3652
XMHX1252 XMHX1852
AHX0752 AHX0952 AHX1252
UHX0762 UHX0962 UHX1262 UHX1562 UHX1862 UHX2462 UHX3662 UHX4862 UHX5462
UMHX0762 UMHX0962 UMHX1262 UMHX1562 UMHX1862
DHX3652 DHX4852
THX1252 THX1852 THX2452
KHX0752 KHX0952 KHX1252 KHX1862 KHX1962 KHX2452
FHX0762 FHX0962 FHX1262 FHX1562 FHX1862 FHX2462
Concealed-Floor
FM
Standing Type
FMHX0762 FMHX0962 FMHX1262 FMHX1562 FMHX1862 FMHX2462
Optional Controllers
Timer Wired Remote Controller RCS-TM80BG
Wireless Remote Controller (For U, UM, D, F, FM Types) RCS-BH80AAB.WL
Wireless Remote Controller (For X Type) RCS-SH80AAB.WL
Wireless Remote Controller (For XM Type) RCS-XM18AAB.WL
Wireless Remote Controller (For A, T Types) RCS-TRP80AAB.WL
Wireless Remote Controller (For K Type) RCS-SH1AAB
RC
Simplified Remote Controller RCS-KR1EG
System Controller SHA-KC64UG
Schedule Timer SHA-TM64AGB
Intelligent Controller SHA-KT256EA
Communication Adaptor SHA-KA128AAB
Remote Sensor ART-K45AGB
LonWorks Interface SHA-LN16UAB
SANYO North America Corporation In Canada
Commercial Solutions Division SANYO Canada Inc.
2055 Sanyo Ave., San Diego
CA 92154, U.S.A.
85464369238000 ©SANYO 2009
201 Creditview Road, Woodbridge
Ontario, L4L 9T1, Canada
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an
important part of your job to install or service the system so
it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
●
Carefully read this instruction booklet before beginning.
●
Follow each installation or repair step exactly as shown.
●
Observe all local, state, and national electrical codes.
●
Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard or
WARNING
CAUTION
unsafe practice which can result
in severe personal injury or death.
This symbol refers to a hazard or
unsafe practice which can result
in personal injury or product or
property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
WARNING
When Wiring
When Installing…
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide
a solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Ventilate the room well, in the event that is refrigerant
gas leaks during the installation. Be careful not to allow
contact of the refrigerant gas with a flame as this will
cause the generation of poisonous gas.
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor
units. Get a partner to help, and bend your knees when lifting
to reduce strain on your back. Sharp edges or thin aluminum
fins on the air conditioner can cut your fingers.
When Servicing
• Turn the power OFF at the main power box (mains)
before opening the unit to check or repair electrical parts
and wiring.
• Keep your fingers and clothing away from any moving
parts.
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left
inside the unit being serviced.
CAUTION
• Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously toxic
gas.
• Confirm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove, gas
water heater, electric room heater or other heat source,
it can cause the generation of poisonous gas.
2
Check of Density Limit
The room in which the air conditioner is to be
installed 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 protect
the ozone layer. However, since it contains more than air,
it poses the risk of suffocation if its density should rise
excessively. Suffocation from leakage of
refrigerant is almost non-existent.
With the recent increase in the number of high density
buildings, however, the installation of multi air conditioner
systems is on the increase because of the need for
effective use of floor space, individual control, energy
conservation by curtailing heat and carrying power, etc.
Most importantly, the multi air conditioner system is able
to replenish a large amount of refrigerant compared to
conventional individual air conditioners. If a single unit of
the multi air conditioner system is to be installed in a small
room, select a suitable model and installation procedure
so that if the refrigerant accidentally leaks out, its density
does not reach the limit (and in the event of an emergency,
measures can be made before injury can occur).
ASHRAE and the International Mechanical Code of
the ICC as well as CSA provide guidance and define
safeguards related to the use of refrigerants, all of which
define a Refrigerant Concentration Level (RCL) of 25
pounds per 1,000 cubic feet for R410A refrigerant.
For additional guidance and precautions related to
refrigerant safety, please refer to the following documents:
International Mechanical Code 2009 (IMC-2009)
(or more recently revised)
ASHRAE 15
ASHRAE 34
3
CONTENTS
Page Page
IMPORTANT! ............................................................ 2
Please Read Before Starting
Check of Density Limit
1. GENERAL .............................................................. 5
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied
1-3. Type of Copper Tube and Insulation Material
1-4. Additional Materials Required for Installation
2. SELECTING THE INSTALLATION SITE ............... 8
2-1. Indoor Unit
3. HOW TO INSTALL THE INDOOR UNIT ................. 9
Concealed Duct Type (U Type)
■
3-1. Required Minimum Space for Installation and
Service
3-2. Suspending the Indoor Unit
3-3. Installing the Drain Piping
3-4. Checking the Drainage
3-5. Increasing the Fan Speed
3-6. When Installing the Indoor Unit
3-7. Required Minimum Space for Installation and
Service
Slim Concealed-Duct Type (UM Type)
■
3-8. Required Minimum Space for Installation and
Service
3-9. Preparations Before Installation
3-10. For Bottom Intake
3-11. Installing the Duct
3-12. Suspending the Indoor Unit
3-13. Installing the Drain Piping
3-14. Checking the Drainage
3-15. Increasing the Fan Speed
Floor-Standing Type (F Type)
■
Concealed Floor-Standing Type (FM Type)
3-25. Required Minimum Space for Installation and
Service
3-26. Dimensions and Part Names
3-27. Removing and Attaching the Front Panel
3-28. Installing the Refrigerant Tubing
3-29. Installing the Drain Piping
3-30. Installing the Remote Controller
SUPPLEMENT ON DRAIN PIPING
■
4. ELECTRICAL WIRING ........................................ 33
4-1. General Precautions on Wiring
4-2. Recommended Wire Length and Wire
Diameter for Power Supply System
4-3. Wiring System Diagram
4-4. Important Note When Wiring for Common
Type
5. HOW TO PROCESS TUBING .............................. 39
5-1. Connecting the Refrigerant Tubing
5-2. Connecting Tubing Between Indoor and
Outdoor Units
5-3. Insulating the Refrigerant Tubing
5-4. Taping the Tubes
5-5. Finishing the Installation
6. APPENDIX ........................................................... 43
NAME OF PARTS
■
Care and Cleaning
■
Troubleshooting
■
Tips for Energy Saving
■
Wall-Mounted Type (K Type)
■
3-16. Removing the Rear Panel from the Unit
3-17. Selecting and Making a Hole
3-18. Installing the Rear Panel onto the Wall
3-19. Removing the Grille to Install the Indoor Unit
3-20. Preparing the Tubing
3-21. Shaping the Tubing
3-22. Installing the Drain Hose
3-23. When Using Wireless Remote Controller
Instead of Wired Remote Controller
3-24. External Electronic Expansion Valve Kit
(ATK-SVRK56BA)
4
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. Flathead screwdriver
2. Phillips head screwdriver
3. Knife or wire stripper
4. Tape measure
5. Carpenter’s level
6. Sabre saw or key hole saw
7. Hacksaw
8. Core bits
9. Hammer
10. Drill
11. Tube cutter
12. Tube flaring tool
13. Torque wrench
14. Adjustable wrench
15. Reamer (for deburring)
1-2. Accessories Supplied
See Tables 1-1 – 1-4.
1-3. Type of Copper Tube and Insulation Material
If you wish to purchase these materials separately from a
local source, you will need:
1. Deoxidized annealed copper tube for refrigerant tubing.
2. Foamed polyethylene insulation for copper tubes as
required to precise length of tubing. Wall thickness of the
insulation should be not less than 5/16 in.
3. Use insulated copper wire for field wiring. Wire size varies
with the total length of wiring.
“
Refer to
4. ELECTRICAL WIRING” for details.
Check local electrical codes and
CAUTION
regulations before obtaining
wire. Also, check any specified
instructions or limitations.
1-4. Additional Materials Required for Installation
1. Refrigeration (armored) tape
2. Insulated staples or clamps for connecting wire
(See your local codes.)
3. Putty
4. Refrigeration tubing lubricant
5. Clamps or saddles to secure refrigerant tubing
6. Scale for weighing
5
Table 1-1 (Concealed Duct)
Part Name Figure Q'ty Remarks
Drain hose 1 For securing drain hose
Hose band 1 For securing drain hose
Packing 1 For drain joint
Drain insulator 1 For drain joint
Flare insulator 1 For liquid tube
Insulating tape 2 For gas and liquid tubes flare nuts
White
(heat-resisting)
Flare insulator 1 For gas tube
Washer 8 For suspending indoor unit from ceiling
Sealing putty 1 For sealing recessed portion of power supply
Vinyl clamp 8 For flare and drain insulators
Table 1-2 (Slim Concealed Duct)
Part Name Figure Q'ty Remarks
Washer 8 For suspension fitting
Flare insulation
T3
T5
2
For gas / liquid tube connection
set
Insulation tape 2 For gas / liquid tube / flare nut connection
Vinyl tie 8 For flare / drain insulating connection
Drain hose insulation 1 For drain tube connection
Drain hose 1 For unit & PVC tube connection
T10
L140
Hose band 2 For drain hose connection
Short circuit connection 1
For high static pressure
(Located on the back of the electrical component box lid.)
Table 1-3 (Wall-Mounted)
Part Name Figure Q'ty Remarks
Tapping screw 10 For fixing the rear panel
Plastic cover 1 For improved tubing appearance
Insulator 1 For insulating flare nut
5/32" 1"
●
Use M10 or 3/8" for suspending bolts.
●
Field supply for suspending bolts and nuts.
6
Table 1-4 (Floor-Standing & Concealed Floor-Standing)
Part Name Figure Q'ty Remarks
Connection pipe 1 For connecting gas tubes
Flare insulator 2 For gas and liquid tubes
Insulating tape 2 For gas and liquid tube flare nuts
Insulating tape 2 For gas and liquid tubes
(White)
(Black)
Vinyl clamp 7 For ends of flare insulator
Insulating tape (black and long) 1 For drain pipe
Drain insulator 1 For drain hose joint
Binding strap
●
Use M10 or 3/8" for suspending bolts.
●
Field supply for suspending bolts and nuts.
2
7
2. SELECTING THE INSTALLATION SITE
2-1. Indoor Unit
AVOID:
areas where leakage of flammable gas may be expected.
●
places where large amounts of oil mist exist.
●
direct sunlight.
●
locations near heat sources which may affect the
●
performance of the unit.
locations where external air may enter the room directly.
●
This may cause “sweating” on the air discharge ports,
causing them to spray or drip.
locations where the remote controller will be splashed with
●
water or affected by dampness or humidity.
installing the remote controller behind curtains or furniture.
●
locations where high-frequency emissions are generated.
●
DO:
select an appropriate position from which every corner of
●
the room can be uniformly cooled.
select a location where the ceiling is strong enough to
●
support the weight of the unit.
select a location where tubing and drain pipe have the
●
shortest run to the outdoor unit.
allow room for operation and maintenance as well as
●
unrestricted air flow around the unit.
install the unit within the maximum elevation difference
●
above or below the outdoor unit and within a total tubing
length (L) from the outdoor unit as detailed in the installation
manual packed with the outdoor unit.
allow room for mounting the remote controller about 3 ft.
●
off the floor, in an area that is not in direct sunlight nor in
the flow of cool air from the indoor unit.
The elevation ((Slim) Concealed Duct) between the bottom
●
unit and the floor surface should be at least 8 feet.
If the elevation ((Slim) Concealed Duct) between them is
●
less than 8 feet, install a filter (optional/field supply) or a pro-
tective device (field supply) not to touch the electrical parts
or fan with hands.
The air intake and outtake openings should be provided with
●
the same location of a room.
(Slim) Concealed Duct Type
3 ft.
3 ft.
10 in.
10 in.
10 in.
3 ft.
3 ft.
3 ft.
Fig. 2-1
Min.8 ft.
Fig. 2-2
Wall-Mounted T ype
Min.
6 in.
Min.6 in.
Front View
Min.
6 in.
Fig. 2-3
Floor-Standing, Concealed Floor-Standing Type
min.
3-15/16"
min. 3.3 ft.
Horizontal view Vertical view
min.
3-15/16"
min. 3.3 ft.
Fig. 2-4
NOTE
Air delivery will be degraded if the distance from the floor to
the ceiling is greater than 10 ft.
8
3. HOW TO INSTALL THE INDOOR UNIT
Concealed Duct Type (U Type)
■
3-1. Required Minimum Space for Installation and Service
●
This air conditioner is usually installed above the ceiling so that the
indoor unit and ducts are not visible. Only the air intake and air outlet
ports are visible from below.
●
The minimum space for installation and service is shown in
Fig. 3-1 and Table 3-1.
●
It is recommended that space be provided (17-23/32 × 17-23/32
in.) for checking and servicing the electrical system.
●
Fig. 3-2 and Table 3-2 show the detailed dimensions of the indoor
unit.
A (Suspension bolt pitch)
Min.
9-27/32
22-27/32
Air outlet duct flange
Indoor unit
Fig. 3-1
Min.
Min.
9-27/32
15-3/4
Electrical
component box
Inspection
access
17-23/32
17-23/32
Refrigerant
tubing
Min. 25-19/32
Unit: in.
Table 3-1
Type
A (Length)
Number of duct flanges
Table 3-2
Dimension
Typ e
7, 9, 12, 15
18, 24
36, 48, 54
ABCDEFGH I JK
26-1/16
37-7/8
56-25/32
3-17/32
7-9/32
Unit: in. (mm)
7, 9, 12, 15
30-23/32 (780)
2
23-5/8
(7-7/8 s 3)
35-7/16
(7-3/32 s 5)
54-11/32
(9-1/16 s 6)
10-1/4
(O.D.)
31/32
(Ceiling opening dimension)
(Suspension bolt pitch)
27-9/16 30-23/32 11-13/32 10-5/16 26-25/32 28-5/32 7-3/32 – 13-3/8 8 12
39-3/8 42-17/32 11-13/32 10-23/32 38-19/32 39-31/32 5-1/8
58-9/32 61-13/32 13-3/16 12-7/32 57-15/32 58-27/32 5-1/8
2-5/322-5/32
13/32
13/32
7-7/8
13/32
I
3-15/32
10-13/16
3-15/16
1-7/32 1-7/32
22-27/3231/32
18, 24
42-17/32 (1,080)
3
L-ø1/4
(Hole)
A (O.D.)
H (Duct suspension bolt pitch)
G (Ceiling opening dimension)
C
(Suspension bolt pitch)
EEEF
D
36, 48, 54
61-13/32 (1,560)
4
B
Unit: in.
No. of holes
L M
9-21/32
(9-21/32 s 1)
19-9/32
(9-21/32 s 2)
Refrigerant tubing joint (liquid tube)
13/32
11
IJJK
3/43/4
4-ø15/32
(Hole)
18-ø1/8
(Hole)
Inspection access
1-9/16
(5-29/32)
2-15/16
2-9/16
Refrigerant tubing joint (gas tube)
Upper drain port (O.D. 1-1/4 in.)
Bottom drain port (O.D. 1-1/32 in.)
Suspension lug
Power supply outlet (2- ø1-3/16 hole)
Fresh air intake port ( ø5-29/32 hole)
Flange for the flexible air outlet duct ( ø7-7/8 hole)
Tube cover
Electrical component box
Flange for the air intake duct
(Option or field supply)
Inter-unit control wiring
31/32 8-9/32
13/32
(17-23/32
17-23/32)
(Field supply)
4-17/32
24-13/16 31/32
1-3/16
6-5/16
2-3/4
31/32
2-3/4
3-11/32
Inspection access panel
9-27/32 12 16
9-7/16 16 18
12-7/32
31/32
6-7/8
10
9
7-15/32
1-3/8
5-1/8
11-7/32
Ceiling
Unit: in.
Fig. 3-2
9
3-2. Suspending the Indoor Unit
Depending on the ceiling type:
• Insert suspension bolts as shown in Fig. 3-3
or
• Use existing ceiling supports or construct a suitable support as
shown in Fig. 3-4.
WARNING
It is important that you use extreme care
in supporting the indoor unit inside the
ceiling. Ensure that the ceiling is strong
enough to support the weight of the unit.
Before hanging the unit, test the strength
of each attached suspension bolt.
(1) When placing the unit inside the ceiling, determine the pitch of
the suspension bolts referring to the dimensional data on the
previous page. (Fig. 3-1 and Table 3-1)
Tubing must be laid and connected inside the ceiling when
suspending the unit. If the ceiling is already constructed, lay the
tubing into position for connection to the unit before placing the
unit inside the ceiling.
(2) Screw in the suspension bolts allowing them to protrude from
the ceiling as shown in Fig. 3-3. (Cut the ceiling material, if necessary.)
Hole-in-anchor
Hole-in-plug
Suspension bolt (M10 or 3/8")
(field supply)
Nuts and washers
(use for upper and lower)
Concrete Insert
Fig. 3-3
Ceiling tiles
Ceiling suppor t
Fig. 3-4
Suspension bolt
Suspension lug
(3) Thread the 3 hexagonal nuts and 2 washers (field supply) onto
each of the 4 suspension bolts as shown in Figs. 3-5 and 3-6.
Use 1 nut and 1 washer for the upper part, and 2 nuts and 1
washer for the lower part, so that the unit will not fall off the
suspension lugs.
●
Fig. 3-7 shows an example of installation.
Bolt anchor
Air outlet duct
Air-outlet grille
Ceiling material Indoor unit
Double nuts
Suspension bolt
Air-intake duct
Notch
Fig. 3-5
Suspension bolt
Hexagonal nut
Double nuts
Fig. 3-6
Air-intake grille
Fig. 3-7
10
3-3. Installing the Drain Piping
CAUTION
(1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain
and use the supplied hose band to prevent water leaks.
The PVC pipe must be purchased separately.
The transparent drain part on the unit allows you to check
drainage. (Fig. 3-8)
CAUTION
Align the hose band with end of the
hose, and tighten so that it does not
contact the bead.
Drainage check
section on drain port
(transparent)
Drain hose
(supplied)
Hard PVC
socket VP-25
(not supplied)
Hard PVC
pipe
VP-25
(not supplied)
●
Do not use adhesive at the drain connection port on the
indoor unit.
●
Insert the drain pipe until it contacts the socket, as shown in
the figure at right, then secure it tightly with the hose band.
●
Do not use the supplied drain hose bent at a 90° angle.
(The maximum permissible bend is 45°.)
●
Tighten the hose clamps so their locking nuts face upward.
(Fig. 3-8)
(2) After connecting the drain piping securely, wrap the supplied
packing and drain pipe insulator around the pipe, then secure it
with the supplied vinyl clamps. (Fig. 3-9)
NOTE
Make sure the drain pipe has a downward gradient (1/100 or more)
and that there are no water traps.
●
Do not install an air bleeder as this may
cause water to spray from the drain pipe
outlet. (Fig. 3-10)
●
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". Do not raise it any higher than
19-11/16", as this could result in water leaks. (Fig. 3-11)
●
Do not install the pipe with an upward gradient from the connec-
tion port. This will cause the drain water to flow backward and leak
when the unit is not operating. (Fig. 3-12)
●
Do not apply force to the piping on the unit side when connecting
the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame,
or other support as close to the unit as possible. (Fig. 3-13)
Prohibited
Good
Prohibited
Bead
Packing (supplied)
Fig. 3-8
Drain insulator (supplied)
Vinyl clamps
Fig. 3-9
Air bleeder
Fig. 3-10
11-13/16" or less
19-11/16" or less
Fig. 3-11
Upward gradient
PVC adhesive
Refer to “■ SUPPLEMENT ON DRAIN PIPING”.
3-4. Checking the Drainage
After wiring and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a
bucket and wiping cloth to catch and wipe up spilled water.
(1) Connect power to the power terminal board (R, S terminals)
inside the electrical component box.
(2) Remove the tube cover and through the opening, slowly pour
approx. 0.3 gal of water into the drain pan to check drainage.
(3) Short the check pin (CHK) on the indoor control board and oper-
ate the drain pump. Check the water flow through the transparent
drain port and see if there is any leakage.
Fig. 3-12
Support pieces
Fig. 3-13
11
CAUTION
Be careful since the fan will start when you
short the pin on the indoor control board.
(4) When the check of drainage is complete, open the check pin (CHK)
and remount the insulator and drain cap onto the drain inspection port.
3-5. Increasing the Fan Speed
If external static pressure is too great (due to long extension of ducts, for
example), the air flow volume may drop too low at each air outlet. This problem
may be solved by increasing the fan speed using the following procedure:
(1) Remove 4 screws on the electrical component box and
remove the cover plate.
Power supply outlet
Inter-unit control wiring
(2) Disconnect the fan motor sockets in the box.
(3) Take out the booster cable (sockets at both ends)
clamped in the box.
(4) Securely connect the booster cable sockets between the
disconnected fan motor sockets in step 2 as shown in
Fig. 3-15.
(5) Place the cable neatly in the box and reinstall the cover
plate.
Electrical component box
Fan
motor
Booster cable
Booster cable
Fan motor socket
(At shipment) (Booster cable installed)
Fig. 3-15
How to read the diagram
The vertical axis is the external static pressure (in. WG) while the horizontal axis represents the air flow (CFM). The characteristic curves for “HT,” “H,” “M” and “L” fan speed
control are shown.
The nameplate values are shown based on
the “H” air flow. For the 18 and 24 types, the
air flow is 635 CFM, while the external static
pressure is 0.20 in. WG at “H” position. If
0.60
0.40
UHX3662
Limit line
(in.WG)
Limit line
external static pressure is too great (due
to long extension of ducts, for example),
the air flow volume may drop too low at
0.20
External Static Pressure
each air outlet. This problem may be solved
by increasing the fan speed as explained
above.
0
742 918
706
Air Flow Volume (CFM)
UHX0762
UHX0962
UHX1262
0.60
(in.WG)
0.40
Limit line
Limit line
0.20
External Static Pressure
0
247 306
177
Air Flow (CFM)
HT
H
M
L
1059
HT
H
M
L
353
0.60
Limit line
(in.WG)
0.40
0.20
External Static Pressure
0
706
Fig. 3-14
UHX1862
UHX2462
0.60
(in.WG)
Limit line
0.40
Limit line
0.20
M
L
0
494 565
353
Air Flow Volume (CFM)
UHX5462
Limit line
M
L
1059883
H
(in.WG)
Limit line
Limit line
0
UHX4862
L
1059883
UHX1562
M
L
371
353
318 428
Air Flow (CFM)
HT
H
M
1413
HT
H
530
0.60
(in.WG)
0.40
0.20
External Static Pressure
0
External Static Pressure
Limit line
706
0.60
0.40
0.20
External Static Pressure
Limit line
Air Flow Volume (CFM) Air Flow Volume (CFM)
HT
706
HT
H
1413
NOTE
12
HT : Using the booster cable
T : At shipment
Fig. 3-16
3-6. When Installing the Indoor Unit
Confirm that the indoor unit should be installed in a horizontal position.
Use the level gauge or vinyl tube and check every four corner of the
unit is in horizontal.
If the air outlet duct flange is positioned with downward gradient,
there is in danger of water splash or drainage.
Also, dust may sometimes be contaminated inside the drain pan caused
by the residual drain water.
Install the air outlet duct flange side in horizontal or upward and within the
range of 3/8" in the upward direction.
Never install it with a downward gradient against horizontal.
Level gauge
Level gauge
Air outlet duct flange
Air outlet duct flange
(Prohibited)
(Prohibited)
(Prohibited)
(Prohibited)
Make sure to confirm
Make sure to confirm
that the unit is in horizontal
that the unit is in horizontal
at the position of the
at the position of the
ceiling-mount hanger by
ceiling-mount hanger by
using a level gauge
using a level gauge
or vinyl tubing.
or vinyl tubing.
Fig. 3-17
3-7. Required Minimum Space for Installation and Service
If the ceiling tiles cannot be removed, provide the opening holes on the
lower side of the indoor unit for removing the unit in order to maintain
and clean the drain pan and heat exchanger or provide a minimum of
1.0 ft. or more space.
Fig. 3-18
Min. 1.0 ft. or more spaceMin. 1.0 ft. or more space
13
Slim Concealed-Duct Type (UM Type)
■
3-8. Required Minimum Space for Installation
and Service
This air conditioner is usually installed above the
●
ceiling so that the indoor unit and ducts are not
visible. Only the air intake and air outlet ports are
visible from below.
The minimum space for installation and service is
●
shown in the diagram.
*H dimension means the minimum height of the
●
unit.
Select the *H dimension such that a downward
●
slope of at least 1/100 is ensured as indicated in
“3-13. Installing the Drain Piping”.
32-7/16" (Suspension bolt pitch)
min.
min.
7-7/8"
22-13/64"
Flange for air
outlet duct
"
Electrical
7-7/8
component box
Inspection
Refrigerant tubing
min.25-5/8"
MIN.25/32"
access
17-23/32"
x
17-23/32"
Unit: in.
7-7/8"
The diagram shows the detailed dimensions of the indoor unit.
●
6
5-45/64
27-1/4
25-13/64(6-19/64x4)
10
25-13/64
(Suspension bolt pitch)
5-ø1/8
(Hole)
1-9/64
3-51/64
2-19/32
1-1/32
* Min. 4" or more for bottom air intake
1-1/16
4
Inspection access
(17-23/32
" 17-23/32")
(Field supply)
Water inlet
*MIN.25/32"
Fig. 3-19
1-7/64
1-3/16
3-3/16
7
1
1-19/64
2
6-1/32
3-5/16
Ceiling
2-ø1/8
25/64
3-5/32 5-5/8
1-3/16
3
*H=MIN.9-1/2"
(Hole)
9-3/8
1-47/64
7-41/64
22-13/64
1-1/2
(Suspension bolt pitch)
32-7/16
4-61/64
29-17/32
26-49/64
1-29/64
5-29/32
5
9
Fig. 3-20
14
55/64
1-37/64
4-23/32
29/32
29/32 6-7/64
35/64
10-ø1/8
35/64
5-13/64
19/32
8-21/32
* Frame Filter Uninstalled
(Hole)
8-21/32
27-23/32
8
5-29/32
7-7/8
35/64
5-13/64
29/32
Unit: in.
3-9. Preparations Before Installation
(1) Confirm the positional relationship between the unit and
suspension bolts. (Refer to the diagram.)
• Install the inspection opening on the control box side where
maintenance and inspection of the control box are easy.
The drain pump can only be inspected through the bottom of the unit.
Install the inspection opening also in the lower part of the unit.
(Inspection access)
2.3
Allow view A
Inspection access
(Field supply)
2.7
Air discharge
A
Air intake
Ceiling
Fig. 3-21
(2) Make sure the range of the unit’s external static pressure is not exceeded.
(See the technical documentation for the range of the external static pressure setting.)
(3) Open the installation hole. (Pre-set ceilings)
• Once the installation hole is opened in the ceiling where the unit is to be installed, pass refrigerant piping,
drain piping, transmission wiring, and remote controller wiring (It is not necessary if using a wireless remote
controller) to the unit's piping and wiring holes.
See “5. HOW TO PROCESS TUBING, 3-13. Installing the Drain Piping” and “4. ELECTRICAL WIRING”.
• After opening the ceiling hole, make sure ceiling is level if needed. It might be necessary to reinforce the
ceiling frame to prevent shaking. Consult an architect or carpenter for details.
3-10. For Bottom Intake
For bottom intake, replace the chamber lid and protection net in the procedure shown in the diagram.
(1) Remove the Frame Filter Assy.
Remove the chamber lid.
(2) Refer to the diagram to attach the chamber lid and Frame Filter Assy in the direction of the arrow.
Note: Attach the lid with the dummy holes downward.
(3) Attach the Frame Filter Assy (supplied) in the manner shown in the diagram.
Unit: ft.
(1)
Air discharge
(2)
Chamber lid
Air discharge
Dummy hole
Air intake
Dummy hole
Air intake
Frame
Filter Assy
Chamber lid
Frame
Filter Assy
(3)
Fig. 3-22
15
Main unit
Attach the Frame Filter Assy to the
main unit while pushing the tip of
the latches in the direction of the
arrow.
Frame Filter Assy
In case of bottom side In case of back side
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