intensity IPCC120KF-5, IPCC180KF-5 Installation & Owner's Manual

ROOFTOP PACKAGE TYPE
(Convertible) 7.5, 10, 15 and 20 Tons.
IPCC090KF-5, IPCC120KF-5, IPCC180KF-5, IPCC240KF-5.
INSTALLATION
& OWNER´S MANUAL
intensity.mx
MAN-I-IPCC/5-0217
CONTENTS
PAGE
WARNING
ACCESSORIES.........................................................................................1
GENERAL INFORMATION........................................................................1
UNIT DIMENSIONS...............................................................................2
LOCATIONS AND RECOMMENDATIONS....................................................4
INSTALLATION..........................................................................................4
ELECTRICAL WIRING.............................................................................6
SPECIFICATION.......................................................................................9
START-UP ..............................................................................................20
MAINTENANCE.......................................................................................20
Ask your dealer for improvement, repair, and
maintenance.
Incomplete improvement, repair, and maintenance may result
in a water leakage, electric shock, and fire.
In order to avoid electric shock, fire or injury, or if you
detect any abnormality such as smell of fire, turn off the
power supply and call your dealer for instructions.
Never replace a fuse with that of wrong rated current or
other wires when a fuse blows out.
Use of wire or copper wire may cause the unit to break down
or cause a fire.
Nomenclature
NAME
CODE
Ask your dealer for installation of the air conditioner.
Incomplete installation performed by yourself may result in a
water leakage, electric shock, and fire.
C/O
Cooling Only
Hor.& Dow.
Horizontal & Downflow Units (Optional)
Do not insert fingers, rods or other objects into the air
inlet or outlet.
When the fan is rotating at high speed, it will cause injury.
Never use a flammable spray such as hair spray, lacquer
or paint near the unit. It may cause a fire.
Never inspect or service the unit by yourself.
Ask a qualified service person to perform this work.
1. ACCESSORIES
Keep far away from high-frequency equipment.
Tab.1-1
Name of accessories
Qty
Manual
1
Drain outlet
1
Snap ring
1
Drain pipe
1
Wire controller
1
Shape
2. GENERAL INFORMATION
Warnings and Cautions appear at appropriate locations
throughout this manual.
Read these carefully.
Keep away from the following places:
A place where it is full of oil, gas; places where salty air
surrounding(near the coast); and a place where is caustic
gas(the sulfide in hotspring). Location in above places may
cause malfunction or shorten the life span of the manchine.
In the cace of extremely strong wind, please prevent the
air from flowing backwards into the outdoor unit.
Snow canopy is necessary in sonwfall places on the
outdoor unit. Please consult the local dealer for details.
In the frequent thunderstruck place, lightning proof
actions should be taken.
To prevent refrigerant leak, contact your dealer.
When the system is installed and runs in a small room, it is
required to keep the concentration of the refrigerant, if by any
chance coming out, below the limit. Otherwise, oxygen in the
room may be affected, resulting in a serious accident.
WARNING: Indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
The refrigerant in the air conditioner is safe and normally
does not leak.
If the refrigerant leaks in the room, contact with a fire of a
burner, a heater or a cooker may result in a harmful gas.
CAUTION: Indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices and
where property-damage-only accidents could occur.
Turn off any combustible heating devices, ventilate the
room, and contact the dealer where you purchased the
unit.
Do not use the air conditioner until a service person confirms
that the portion where the refrigerant leaks is repaired.
CAUTION
Read this entire manual before beginning installation
procedures.
Bodily injury can result from high voltage electrical
components, fast moving fans. For protection from these
inherent hazards during installation and servicing, the
electrical supply must be disconnected.
If the supply cord is damaged, it must be replaced by the
manufacturer or its service agent or a similarly qualified
person in order to avoid a hazard.
The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper
tube.
The appliance should not be used by children without
supervision.
If operating checks must be performed with the unit
operating, it is the technicians responsibility to recognize
these hazards and proceed safely.
I&O manual
1
3. UNIT DIMENSIONS
Units: mm
7.5 Tons C/O Units ( Hor. & Dow.)
176
282
Fig.3-1
484
Electric heater control box access panel
905
678
350
Horizontal supply opening
Hole for electric heater power wires
Fresh air
313
278
Horizontal return opening
193 16 101
10 Tons C/O Units ( Hor. & Dow.)
Units: mm
194
Fig.3-2
504
407
628
Electric heater control box access panel
Hole for electric heater power wires
Horizontal supply opening
822
485
Fresh air
290
Horizontal return opening
I&O manual
2
406
60
103
15 Tons C/O Units ( Hor. & Dow.)
Units: mm
Fig.3-3
194
506
Electric heater control box access panel
Horizontal supply opening
Hole for electric heater power wires
504
824
205
577
1029
313
Horizontal return opening
Fresh air
360
55
143
Units: mm
20 Tons C/O Units ( Hor. & Dow.)
294
880
Electric heater control box access panel
Horizontal supply opening
Hole for electric heater power wires
Fig.3-4
4
64 703
3
20
1031
67
3
315
Horizontal return opening
Fresh air
59
9
55
143
I&O manual
3
4. LOCATIONS AND RECOMMENDATIONS
4.1 Horizontal airflow application
When choose horizontal air supply mode, please remove
horizontal air supply panel and horizontal air return panel firstly.
See Fig.5-2
These units are designed and certified for outdoor installations.
These units may be installed directly on wood flooring or on
Class A, Class B, or Class C roof covering material.
Location of the unit must allow service clearance around it.
Clearance of the unit must be given careful consideration.
Check the handling facilities to ensure the safety of personnel
and the unit(s).
Caution must be taken at all times to avoid Personal injuries
and/or damage to equipment.
The unit must be mounted level for proper drainage of water
through the holes in the base pan.
The unit must not be exposed to direct roof water runoff.
Flexible duct connectors must be of a flame retardant material.
All duct work outside of the structure must be insulated and
weatherproofed in accordance with local codes.
Holes through exterior walls must be sealed in accordance with
local codes.
All fabricated outdoor ducts should be as short as possible.
4.2 Downflow application-curb mounting(for 7.5-20
tons C/O units.
Caution must be taken at all times to avoid personal injuries
and/or damage to the equipment.
The unit must be mounted level for proper drainage of water
through the holes in the base pan.
The unit must not be exposed to direct roof water runoff.
Flexible duct connectors must be of a flame retardant material.
All duct work outside of the structure must be insulated and
weatherproofed in accordance with local codes.
Roof flashing must be installed to seal the roof curb cavity and
must conform to local building codes.
All fabricated outdoor ducts should be as short as possible.
4.3 Clearances
The recommended clearances for single-unit installations are
illustrated in Fig.4-1
These minimum requirements are not only an important
consideration when determining unit placement, but they are
also essential to ensure adequate serviceability, maximum
capacity, and peak operating efficiency.
Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation
of warm condenser air. Actual clearances which appear to be
inadequate should be reviewed with a local engineer.
See the unit's nameplate for the absolute minimum clearance
between the unit and any combustible surface(s).
Units: mm
When chosse vertical air supply mode (for 10 tons C/O, units
and H/P units), please remove horizontal air supply panel
and horizontal air return panel firstly; and then unload air down
flow panel, horizontal air deflector and air down-return panel;
lastly, remount horizontal air supply panel and horizontal air
return panel. See Fig.5-3.
≥ 1000
≥ 1000
Overhead air
Clearance≥ 3000
≥ 1000
When chosse vertical air supply mode (for 7.5, 20
tons C/O units , please remove horizontal air supply panel,
unload horizontal air deflector, and remount horizontal air
supply panel firstly. See Fig.5-3. and then unload air down
flow panel, air down-return panel. See Fig.5-4.
The Roof Mounting Curb, or a field fabricated curb must be in
place before the unit is hoisted to the roof top.
The Roof Mounting Curb (frame) must be installed on a flat,
level section of the roof and provide a level mounting surface
for the unit. In addition, be sure to provide sufficient height
above the roof to prevent water from entering the unit.
Be sure the mounting curb spans structural members (trusses)
of the roof, thereby providing sufficient support for the weight of
the unit, the curb, the duct(s), and any factory or field installed
accessories.
Be sure the hole in the structure for the ducts is large enough
to accommodate the fabricated ducts and the insulation
surrounding them.
These units are design certified for outdoor installation. These
units may be installed directly on wood flooring or on Class
A,Class B, or Class C roof covering material.
5. INSTALLATION
5.1 Lifting
Rigging cables should have adequate capability to resist 3
times weight of unit. Before lift, please check and ensure that
hooks are holding tightly to unit and lifting angles are no less
than 60°.
Location of the unit must allow for service clearance around it.
Clearance of the unit must be given careful consideration.
Cloth material or hard-paper should be padded in the contact
place between unit and rigging cable. Rigging cable should be
entwined a round at the hook for prevent danger by cable slip
because of weight unbalance.
Check the handling facilities to ensure the safety of personnel
During lifting, anyone forbidden lingering under the lifting unit.
I&O manual
4
Fig.4-1
Spreader bars
≥60°
Fig.5-1
5.2 Rooftop-units
Horizontal
air deflector
Air down return panel
Air down flow panel
For roof top applications using a field fabricated frame and
ducts, use the following procedure:
The frame must be located and secured by bolting or welding
to the roof. Flashing is required.
The hole in the roof must be prepared in advance of installing
the unit.
Secure the ducts to the roof.
Place the unit on the frame or roof curb.
Fig.5-3
Secure the unit to the frame or roof curb.
Insulate any ductwork outside of the structure with at least 2
inches of insulation and then weatherproof. There must be a
weatherproof seal where the duct enters the structure.
Complete the installation according to the instructions in the
following sections of this manual.
Typical rooftop application with frame
Air down flow panel
Air down return panel
Horizontal
air supply panel
Horizontal
air return panel
Fig.5-4
Fig.5-2
I&O manual
5
5.3 Ground level-horizontal units
For ground level installations, the unit should be positioned on
a pad in the size of the unit or larger. The unit must be level on
the pad. The pad must not come in contact with the structure.
Be sure the outdoor portion of the supply and return air ducts
are as short as possible.
X mm
Proceed with the installation as follows:
●
Place the unit on the pad.
●
Attach the supply and return air ducts to the unit.
●
Insulate any ductwork outside of the structure with at least 2
inches of insulation and weatherproof. There must be a weatherproof seal where the duct enters the structure.
●
Others
20≤X≤40
Fig.5-6
5.5 Ductwork
Complete the installation according to the instructions in the
following sections of this manual.
Attaching horizontal ductwork to unit
All conditioned air ductwork should be insulated to minimize
heating and cooling duct losses. Use a minimum of 2 inches of
insulation with a vapor barrier. The outside ductwork must be
weatherproofed between the unit and the building.
Typical ground level application
When attaching ductwork to a horizontal unit, provide a flexible
watertight connection to prevent noise transmission from the
unit to the ducts. The flexible connection must be indoors and
made out of heavy canvas.
NOTE
Do not draw the canvas taut between the solid ducts.
Unit duct flance
Fig.5-5
Unit exterior
Weather proof
this seam
Fig.5-7
Field duct
5.4 Condensate drain piping
Attaching downflow ductwork to roof curb
●
Supply and return air flanges are provided on the roof curb for
easy duct installation. All ductwork must be run and attached to
the curb before the unit is set into place.
●
Follow these guidelines for ductwork construction:
Connections to the unit should be made with three-inch canvas
connectors to minimize noise and vibration transmission.
Elbows with turning vanes or splitters are recommended to
minimize air noise and resistance.
The first elbow in the ductwork leaving the unit should be no
closer than 2 feet from the unit, to minimize noise and
resistance.
Unit
Drain connection hole
Drain outlet
Snap ring
Drain pipe
Air proof this seam
Field duct
Fig.5-8
I&O manual
6
6. ELECTRICAL WIRING
6.1 Protections and safety control
Minutes delay for the compressor start-up
At the beginning of energizing, 3-minutes delay should be
taken to start the compressor. while after the stop of the
compressor, 7-minutes delay should be taken to re-start the
compressor.
WARNING
An all-pole disconnection switch having a contact separation
of at least 3mm in all poles should be connected in fixed
wiring.
Compressor discharge temperature protection
When discharge temperature ＞257
, the compressor will
stop.
The appliance shall be installed in accordance with national
wiring regulations.
Reverse phase protection relay
An all-pole disconnection device which has at least 3mm
separation distance in all pole and a residual current
device(RCD)with the rating of above 10mA shall be
incorporated in the fixed wiring according to the national
rule.
●
The reverse phase protection relay will make the unit not start,
when the power source is incorrectly connected.
●
The checking of phase order is just carried out at the first time
of electrifying. If malfunction happens then the checking will be
going on until the order of phase is right, and the E0 will be
displayed on the board. If there is no problem in the first
checking, then it will be omitted.
The appliance shall be installed in accordance with national
wiring regulations.
High pressure and low pressure protection
When high pressure ≥638 Psi, and lower pressure ≤21Psi,
the unit will stop.
R410A 220V 3Ph~ 60Hz
Tab.6-1
Nominal ton
7.5
10
15
20
Model ty pe
Ty pe of f low
Compressor
RNC
(each)
30.7
IPT
(each)
8.6
Ev aporator f an motor
Condenser f an motor
1
RNC
(each)
4.1
IPT
(each)
1.11
Electric
heating
C/O
Hor.&Dow.
STC
(each)
203
C/O
Hor.&Dow.
267
43.6
11.2
1
6.0
1.857
1
4.1
1.11
1
-
C/O
Hor.&Dow.
203
30.7
8.57
2
14.0
3.9
1
4.1
1.11
2
-
C/O
Hor.&Dow.
267
43.6
11.25
2
18.0
5.4
1
9.0
2.7
2
-
Qty .
RNC
IPT
Qty .
1
6
1.87
Qty .
IPT
1
-
NOTES
STC: Starting Current (A)
RNC: Running Current (A)
IPT: Input Power (kW)
Qty: Quantity
These data are based on the following conditions. Evaporator Air Input Temperature 89.6
Temperature 125.6 DB.
6.3 Wiring provision
Field wiring
The units are internally wired at the factory according to
generally accepted electrical technology.
Required field wiring
Main power wiring to the unit control wiring between the control
center and the unit, and earth wiring are required in the field.
Required components
The following components are required: main power fuses,
conduit coupling, and field supplied room thermostat.
Wire and fuse size selection for main power source
Wire and fuse sizes should be selected in accordance with
national and standard, taking the designed maximum current
shall be the total of the compressor maximum current,
condenser fan motor current and evaporator fan motor
current(refer to “electrical data”).
DB, 73.4
WB. Condenser Air Input
Wire size between room thermostat and unit
The wire size between the room thermostat and the unit should
be determined according to the following table, because the 24V
power source is applied to the control circuit.
Tab.6-3
Wiring length between room thermostat and unit(one way)
Minimum wire
size(mm2)
10m
15m
20m
30m
40m
0.5
0.5
0.75
0.75
1.0
NOTE
Before connecting the device to the public low-voltage supply
systems the permission of the electricity supplier is forcefully
necessary.
I&O manual
7
6.4 Error code
Tab.6-2
Type
I&O manual
8
Content
Code
Remarks
Normal
Standby
Normal
Constraint cool
on
Normal
Run
10.
Error
Compressor phase sequence
error or phase default
E0
Error
Outdoor coil sensor in sys. A error
E1
Error
Outdoor coil sensor in sys. B error
E2
Error
Overcurrent protection of system A are active
3 times within one hour
E3
Unit shall be power off to
recovery
Error
Overcurrent protection of system B are active
3 times within one hour
E4
Unit shall be power off to
recovery
Error
Indoor coil sensor in sys. A error
E5
Error
Indoor coil sensor in sys. B error
E6
Error
High、 low pressure protection or discharge
temperature protection of system A reached 3 times
E7
Unit shall be power off to
recovery
Error
High、 low pressure protection or discharge
temperature protection of system B reached 3 times
E8
Unit shall be power off to
recovery
Error
Indoor sensor error
E9
Error
Outdoor ambient sensor error
EA
Error
Wire controller output error
Eb
Protection
Overcurrent protection in sys.A
P0
Protection
Overcurrent protection in sys.B
P1
Protection
Overcurrent protection for indoor fan
P2
Protection
Comprehensive protection for outdoor fan
P3
Protection
Protection for Hi./Lo. pressure or exhaust temp.
in sys.A
P4
Comprehensive protection
in sys.A
Protection
Protection for Hi./Lo. pressure or exhaust temp. in
sys.B
P5
Comprehensive protection
in sys.B
Protection
Hi-pressure protection initiated in T2 evaporator
stops the outdoor unit fan
P6
Protection
Hi-pressure protection initiated in T2 evaporator
stops the outdoor unit fan and compressor
P7
Protection
Protection for condenser Hi-temp. in sys.A
P8
Protection
Protection for condenser Hi-temp. in sys.B
P9
Protection
Anti-freezing protection for evaporator in sys. A
Pc
Protection
Anti-freezing protection for evaporator in sys. B
Pd
Protection
Defrosting
dF
7. SPECIFICATION
7.1 Physical Data
R410A 220V 3Ph～ 60Hz
Tab.7-1
Nominal ton
7.5 Tons
Model type
C/O
Type of flow
Hor. & Dow.
89000
Capacity
Cooling capacity(net) (Btu/h)
Heating capacity (Btu/h)
Performance
EER
9.7
Length(mm)
1630
Width(mm)
1065
Heigth(mm)
1068
(Ⅰ)
Dimensions
Net weight(kg)
315
Refrigerant type
R410A
Flow control
Capillary
Compressor Quantity/Type
1/Scroll
3
Rows
Outdoor coil Fins per inch
Indoor coil
16
Tube diameter(in.)
5/16
Rows
2
Fins per inch
16
Tube diameter(in.)
5/16
Quantity used/diameter(mm)
1/650
Type
Propeller
Drive type
Direct
Quantity motors/power(kW)
1/1.11
Motor RPM
1120±30
Outdoor fan Quantity speeds
1
Nomial total CFM
5880
Quantity used/model
1/10×10
FC centrifugal
Type
Indoor fan
Drive type
Belt
Quantity speeds
Variable sheave
Quantity motors/power(kW)
Filters
1/1.9
Motor RPM
1680
Nominal total CFM (Ⅱ)
3000
Quantity
Size recommended(mm)
(2)
447X890X10
NOTES
(Ⅰ )
Cooling capacities are rated at 95
ambient DB, 80
entering DB, 67
(Ⅱ )
Units are suitable for operation to ±20% of nominal CFM.
entering WB.
I&O manual
9
R410A 220V 3Ph～ 60Hz
Tab.7-2
Nominal ton
10 Tons
Model type
C/O
Type of flow
Hor. & Dow.
Capacity
Cooling capacity(net) (Btu/h)
Heating capacity (Btu/h)
Performance
EER
Dimensions
(Ⅰ)
120000
10.5
Length(mm)
2165
Width(mm)
1335
Heigth(mm)
1002
Net weight(kg)
445
Refrigerant type
R410A
Flow control
Capillary
Compressor Quantity/Type
1/Scroll
Rows
3.5
Tube diameter(in.)
5/16
Outdoor coil Fins per inch
Indoor coil
16
Rows
3
Fins per inch
18
Tube diameter(in.)
5/16
Quantity used/diameter(mm)
1/650
Type
Propeller
Drive type
Direct
Outdoor fan Quantity speeds
1
Quantity motors/power(kW)
1/1.11
Motor RPM
1120±30
Nomial total CFM
7060
Quantity used/model
1/12×12
Type
Indoor fan
Drive type
Belt
Quantity speeds
Variable sheave
Quantity motors/power(kW)
1/1.8
Motor RPM
1680
Nominal total CFM
Filters
FC centrifugal
3800
(Ⅱ)
Quantity
Size recommended(mm)
(2)
566X814X10
NOTES
(Ⅰ )
Cooling capacities are rated at 95
(Ⅱ )
Units are suitable for operation to ±20% of nominal CFM.
I&O manual
10
ambient DB, 80
entering DB, 67
entering WB.
R410A 220V 3Ph～ 60Hz
Tab.7-3
Nominal ton
15 Tons
C/O
Model type
Hor. & Dow.
Type of flow
Capacity
Cooling capacity(net) (Btu/h)
Heating capacity (Btu/h)
Performance
EER
10
Length(mm)
2229
Width(mm)
1825
Heigth(mm)
1245
Dimensions
(Ⅰ)
180000
Net weight(kg)
710
Refrigerant type
R410A
Flow control
Capillary
Compressor Quantity/Type
2/Scroll
3
Rows
16
Outdoor coil Fins per inch
5/16
Tube diameter(in.)
3
Rows
Indoor coil
Fins per inch
18
Tube diameter(in.)
5/16
Quantity used/diameter(mm)
2/650
Type
Propeller
Drive type
Direct
Quantity motors/power(kW)
2/1.11
Motor RPM
1120±30
Outdoor fan Quantity speeds
1
11000
Nomial total CFM
1/15×15
Quantity used/model
FC centrifugal
Type
Indoor fan
Variable sheave
Quantity speeds
Quantity motors/power(kW)
1/3.9
Motor RPM
1730
Nominal total CFM
Filters
Belt
Drive type
6600
(Ⅱ)
Quantity
Size recommended(mm)
(2)
900X815X12.5
NOTES
(Ⅰ )
Cooling capacities are rated at 95
ambient DB, 80
entering DB, 67
(Ⅱ )
Units are suitable for operation to ±20% of nominal CFM.
entering WB.
I&O manual
11
R410A 220V 3Ph～ 60Hz
Tab.7-4
Nominal ton
20 Tons
Model type
C/O
Type of flow
Hor. & Dow.
Capacity
Cooling capacity(net) (Btu/h)
Heating capacity (Btu/h)
240000
Performance
EER
10.1
Length(mm)
2753
Width(mm)
2157
Heigth(mm)
1245
Dimensions
(Ⅰ)
925
Net weight(kg)
Refrigerant type
R410A
Flow control
Capillary
2/Scroll
Compressor Quantity/Type
4
Rows
Outdoor coil Fins per inch
16
Tube diameter(in.)
5/16
Rows
Indoor coil
3
16
Fins per inch
Tube diameter(in.)
5/16
Quantity used/diameter(mm)
2/750
Propeller
Type
Drive type
Direct
Quantity motors/power(kW)
2/2.7
Motor RPM
910±35
Outdoor fan Quantity speeds
1
Nomial total CFM
14000
Quantity used/model
1/18×18
FC centrifugal
Type
Indoor fan
Belt
Drive type
Variable sheave
Quantity speeds
Quantity motors/power(kW)
Filters
1/5.5
Motor RPM
1730
Nominal total CFM (Ⅱ)
8400
Quantity
Size recommended(mm)
(3)
640X1008X12.5
NOTES
(Ⅰ )
Cooling capacities are rated at 95
(Ⅱ )
Units are suitable for operation to ±20% of nominal CFM.
I&O manual
12
ambient DB, 80
entering DB, 67
entering WB.
7.2 Parameter For Air Volume
Parameter table for indoor unit air volume
Tab.7-6
10 Tons (60Hz)
Tab.7-5
7.5 Tons (60Hz)
Static pressure
(Pa)
Air flow
(CFM)
Brake power
(KW)
Fan speed
(rpm)
0
3250
1.83
25
3149
50
Static pressure
(Pa)
Air flow
(CFM)
Brake power
(KW)
Fan speed
(rpm)
1260
0
4325
2.18
1000
1.78
1265
25
4156
2.10
1004
2996
1.70
1268
50
3929
2.02
1006
60
2941
1.66
1271
75
3756
1.96
1011
75
2886
1.63
1274
100
3579
1.86
1014
100
2782
1.58
1277
125
3382
1.79
1016
125
2664
1.53
1281
150
3218
1.71
1020
150
2540
1.47
1285
175
3020
1.62
1021
175
2411
1.41
1287
Tab.7-8
Tab.7-7
15 Tons (60Hz)
20 Tons (60Hz)
Static pressure
(Pa)
Air flow
(CFM)
Brake power
(KW)
Fan speed
(rpm)
Static pressure
(Pa)
Air flow
(CFM)
Brake power
(KW)
Fan speed
(rpm)
0
7209
5.11
1029
25
9296
5.86
818
50
6814
4.85
1029
50
9041
5.73
819
75
6756
4.71
1030
75
8682
5.59
819
90
6631
4.65
1031
100
8389
5.44
820
125
6316
4.45
1031
125
8179
5.50
820
150
6044
4.32
1032
150
7826
5.27
821
200
5639
4.08
1033
200
7388
4.98
822
250
5227
3.82
1034
250
6955
4.66
823
300
6555
4.32
825
I&O manual
13
Curve diagr ram, air flow volumn.
7.5 Tons (60Hz)
10 Tons (60Hz)
250
Static pressure(Pa)
Static pressure(Pa)
250
225
200
175
150
125
225
200
175
150
125
100
100
75
75
50
50
25
25
0
0
2500 2600 2700 2800 2900 3000 3100 3200 3300 3400
2800 3000
Air volume(CFM)
3200 3400 3600 3800 4000 4200 4400 4600
Air volume(CFM)
Fig.7-2
Fig.7-1
20 Tons (60Hz)
15 Tons (60Hz)
300
Static pressure(Pa)
Static pressure(Pa)
250
225
200
175
150
125
270
240
210
180
150
100
120
75
90
50
60
25
30
0
5200 5450 5700 5950 6200 6450 6700 6950 7200 7450
Air volume(CFM)
Fig.7-3
0
6800 7100 7400 7700 8000 8300 8600 8900 9200 9500
Air volume(CFM)
Fig.7-4
I&O manual
14
Parameter table for outdoor unit air volume
7.3 Operating conditions
For proper performance, run the unit under the following
temperature conditions:
NOTE
Shield parts in below tables are standard working
conditions for the unit.
Tab.7-13
Outdoor temperature: 64°F to 125°F
Room temperature: 62°F to 90°F
Cooling
operation
Tab.7-9
7.5 Tons
Static pressure
(Pa)
Air flow
(CFM)
Brake power Fan speed
(kW)
(rpm)
0
5880
0.78
900
10
5647
0.79
889
20
5411
0.80
875
Caution
Room relative humidity less than 80%. If the unit
operates in excess of this figure,the surface of
the unit may attract condensation.
Tab.7-10
10 Tons
Static pressure
(Pa)
Air flow
(CFM)
Brake power Fan speed
(kW)
(rpm)
0
7060
0.78
935
10
6765
0.79
926
20
6471
0.80
918
Tab.7-11
15 Tons
Static pressure
(Pa)
Air flow
(CFM)
Brake power Fan speed
(kW)
(rpm)
0
11000
0.78×2
935
10
9800
0.79×2
926
20
9600
0.80×2
918
Tab.7-34
Tab.7-12
20 Tons
Static pressure
(Pa)
Air flow
(CFM)
Brake power Fan speed
(kW)
(rpm)
0
14000
1.3×2
940
10
13500
1.4×2
938
20
13100
1.5×2
930
I&O manual
15
Cooling capacity — 7.5 Tons
Tab.7-14
Air Flow(CFM)
Ent
DB
67
85
90
75
80
85
3000
90
75
80
85
3200
75
TC
82.5 84.2 85.8 87.5 87.3 89.0 90.8 92.6 89.3 91.1 92.9 94.8 91.0 92.8 94.7 96.6
SC
72.7 80.4 85.3 87.5 77.4 84.3 88.2 91.1 82.0 84.5 87.9 92.3 86.2 90.3 93.5 95.2
TC
94.8 96.7 98.6 100.6 95.9 97.8 99.8 101.8 96.7 98.6 100.6 102.6 97.3 99.2 101.2 103.3
SC
55.6 68.8 81.8 94.3 58.0 72.6 85.4 96.3 59.5 73.8 88.2 100.1 60.8 75.8 90.7 100.8
TC
98.6 100.6 102.6 104.6 99.2 101.2 103.2 105.2 99.4 101.4 103.4 105.5 99.7 101.7 103.7 105.8
SC
36.8 51.0 62.0 72.4 37.3 50.7 62.3 75.1 37.8 54.8 63.3 75.4 38.3 56.7 64.2 76.8
TC
78.6 80.2 81.8 83.4 81.0 82.6 84.3 86.0 83.3 85.0 86.7 88.4 85.3 87.0 88.7 90.5
73
80
2800
(F)
61
85
2600
90
75
80
85
90
61
Ambient Temperature
95
69.6 75.6 78.0 81.4 72.3 78.6 81.2 85.3 75.2 79.3 83.5 86.7 83.8 85.1 87.2 89.3
TC
85.6 87.3 89.1 90.8 87.1 94.0 96.6 98.0 91.4 96.2 98.1 99.8 93.2 98.1 100.9 101.9
SC
53.9 67.7 81.6 86.2 56.3 71.6 86.5 91.3 58.7 75.0 90.8 92.0 61.1 78.1 94.5 95.9
TC
97.8 99.8 101.8 103.8 98.3 100.3 102.3 104.3 98.7 100.7 102.7 104.7 98.6 100.6 102.6 104.6
SC
35.7 50.2 62.3 74.5 36.2 51.2 64.1 77.3 36.8 52.0 65.6 79.2 37.3 55.6 66.9 81.1
TC
72.1 73.5 75.0 76.5 74.4 75.9 77.4 79.0 76.5 78.0 79.6 81.2 78.4 80.0 81.6 83.2
SC
66.4 68.3 71.3 73.2 71.2 72.4 76.3 78.4 75.3 76.5 77.9 80.4 76.1 78.6 80.3 82.5
TC
84.4 86.1 87.8 89.6 86.3 88.0 89.8 91.6 87.8 89.6 91.3 93.2 89.1 90.9 92.7 94.6
67
73
61
105
SC
67
73
SC
51.0 65.0 79.2 86.3 53.7 66.2 85.0 90.3 56.3 73.3 90.6 92.3 58.8 77.2 90.1 92.4
TC
95.3 97.2 99.2 101.1 95.2 97.1 99.0 101.0 96.7 98.6 100.6 102.6 97.1 99.0 101.0 103.0
SC
34.2 48.9 64.2 76.8 34.1 50.4 65.6 78.8 35.4 52.2 67.2 80.9 35.9 53.4 68.9 83.5
TC
65.3 66.6 67.9 69.3 67.2 68.5 69.9 71.3 69.8 71.2 72.6 74.1 72.1 73.5 75.0 76.5
SC
63.2 64.6 66.4 68.6 61.2 64.3 67.6 69.1 67.3 69.1 71.0 73.2 70.3 71.2 73.6 75.8
TC
76.7 78.2 79.8 81.4 78.5 80.1 81.7 83.3 80.1 81.7 83.3 85.0 81.5 83.1 84.8 86.5
SC
47.8 62.1 75.4 80.2 50.5 66.0 78.3 82.1 53.1 70.2 82.1 84.6 55.7 74.4 82.1 85.6
TC
90.8 92.6 94.5 96.4 86.0 87.7 89.5 91.3 92.9 94.8 96.7 98.6 93.6 95.5 97.4 99.3
SC
32.4 46.3 61.2 76.4 33.0 48.4 63.5 78.1 33.7 50.4 66.6 82.3 34.3 52.5 69.4 85.9
TC
59.9 61.1 62.3 63.6 61.7 62.9 64.1 65.4 64.0 65.3 66.6 68.0 66.1 67.5 68.8 70.2
SC
58.0 59.3 60.9 62.9 56.1 59.0 62.0 63.4 61.7 63.4 65.1 67.2 64.5 65.3 67.5 69.5
TC
70.4 71.8 73.2 74.7 72.0 73.5 74.9 76.4 73.5 75.0 76.5 78.0 74.8 76.3 77.8 79.3
SC
43.9 57.0 69.2 73.6 46.3 60.6 71.8 75.3 48.7 64.4 75.3 77.6 51.1 68.3 75.3 78.5
TC
83.3 85.0 86.7 88.4 78.9 80.5 82.1 83.7 85.2 86.9 88.7 90.4 85.9 87.6 89.3 91.1
SC
29.7 42.5 56.1 70.1 30.3 44.4 58.3 71.7 30.9 46.2 61.1 75.5 31.5 48.2 63.7 78.8
61
115
67
73
61
125
67
73
Notes:
1. All capacities are net and have considered indoor fan heat.
2. TC=Total Capacity. (Unit: 1000Btu/h)
3. SC=SensibleCapacity. (Unit: 1000Btu/h)
4. different air volume in the above table,need to adjust in the field.
I&O manual
16
Cooling capacity — 10 Tons
Tab.7-15
Air Flow(CFM)
Ent
DB
67
85
90
75
80
85
3800
90
75
80
85
4200
75
TC
110.9 113.1 115.4 117.7 113.8 116.1 118.4 120.8 116.5 118.8 121.2 123.6 118.6 121.0 123.4 125.9
SC
96.8
TC
123.4 125.9 128.4 131.0 124.6 127.1 129.6 132.2 125.7 128.2 130.8 133.4 126.3 130.0 131.4 134.0
SC
73.2
TC
127.9 130.5 133.1 135.7 128.3 130.9 133.5 136.2 128.6 131.2 133.8 136.5 129.8 132.4 135.0 137.7
SC
47.7 64.9 79.6 95.3 48.3 65.8 81.2 96.7 49.0 72.1 82.4 98.4 49.7 75.6 84.2 101.3
TC
102.8 104.9 107.0 109.1 105.9 108.0 110.2 112.4 108.9 111.1 113.3 115.6 111.1 113.1 115.6 117.9
SC
92.7
TC
118.7 121.1 123.5 126.0 122.5 127.0 128.5 130.1 123.8 128.0 128.7 132.3 125.1 129.4 130.0 133.3
SC
70.8
TC
126.8 129.3 131.9 134.6 127.1 129.6 132.2 134.9 127.8 130.4 133.0 135.6 128.1 130.7 133.3 135.9
SC
46.3
65.4
81.5 97.8
TC
94.5
96.4
98.3 100.3 97.8
99.8 101.8 103.8 99.8 101.8 103.8 105.9 103.5 105.6 107.7 109.8
SC
88.6
90.4
92.2 94.0
97.1 99.0 101.0 93.4
TC
110.3 112.5 114.8 117.1 112.9 115.2 117.5 119.8 114.6 116.9 119.2 121.6 116.3 118.6 121.0 123.4
73
80
3400
(F)
61
85
3000
90
75
80
85
90
98.7 100.7 102.7 103.2 105.3 107.4 109.5 109.2 111.4 113.6 115.9 114.7 117.0 119.3 121.7
92.0 108.3 124.8 75.6 94.3 112.8 128.5 78.0
97.3 116.5 130.4 79.6
99.7 119.4 131.2
61
Ambient Temperature
95
67
73
61
105
67
73
89.8 108.6 123.4 74.3
47.2
95.2
94.8 114.0 124.3 77.4
66.7 84.3 101.9 47.5
99.3 120.3 128.4 80.2 103.2 125.7 128.2
67.6
95.3
85.8 104.7 48.4
68.7 87.9 106.8
97.2 99.1 101.2 103.2 105.3 107.4
67.6
TC
SC
44.3 63.2
TC
86.3 88.0 89.8 91.6 89.2 91.0 92.8 94.7 92.3 94.1 96.0 97.9 95.8 97.7 99.7 101.7
SC
84.6 86.3 88.0 89.8 86.2 87.9 89.7 91.5 90.2 92.0 93.8 95.7 94.3 96.2 98.1 100.1
TC
101.3 103.3 105.4 107.5 103.2 107.0 107.4 109.5 105.6 107.7 109.9 112.1 108.2 110.4 112.6 114.8
SC
63.5
TC
119.2 121.6 124.0 126.5 120.1 122.5 125.0 127.5 120.8 123.2 125.7 128.2 121.1 123.5 126.0 128.5
SC
42.2
TC
78.5 80.0 81.6 83.3 81.1 82.7 84.4 86.1 83.9 85.6 87.8 89.0 87.1 88.8 90.6 92.4
SC
76.9 78.4 80.0 81.6 78.4 79.9 81.5 83.2 82.0 83.6 85.3 87.0 85.7 87.4 89.2 91.0
TC
92.1
SC
57.7 75.6 92.8 94.7 61.2 80.2 95.7 97.6 64.4 85.5 97.5 100.5 67.4 90.5 100.3 102.3
TC
108.4 110.5 112.7 115.0 109.2 111.4 113.6 115.9 109.8 112.0 114.3 116.5 110.1 112.3 114.5 116.8
SC
38.4 55.7 72.8 89.7 39.0 58.3 76.6 94.6 39.7 60.7 79.9 99.4 40.3 62.8 82.9 102.5
61
125
98.4 99.2 101.2 103.2 105.3 105.4 107.5 109.7 111.9 100.5 102.5 104.6 106.7
123.8 126.3 128.8 131.4 124.6 127.1 129.6 132.2 125.2 127.7 130.3 132.9 125.8 128.3 130.9 133.5
67
73
96.4
SC
61
115
94.6
67
86.4 105.9 115.6 71.3
81.0 98.3
45.2 65.6
83.2 102.1 104.1 67.3
61.3
80.1 98.7 42.9
93.9 95.8
92.1 113.7 117.9 74.2 98.3 115.5 117.6 77.8 102.8 115.6 121.3
85.3 103.7 45.7 67.5
88.2 105.3 107.4 70.8
64.1
97.7 93.8 97.9
94.1 107.3 110.5
84.3 104.1 43.7 66.8
98.2
99.6
86.9 106.8 46.3
69.7 91.2 110.4
74.1 99.6 110.3 112.5
87.9 109.3 44.3
69.1 91.2 112.7
96.0 98.1 99.9 101.9 98.4 100.3 102.3 104.4
73
Notes:
1. All capacities are net and have considered indoor fan heat.
2. TC=Total Capacity. (Unit: 1000Btu/h)
3. SC=SensibleCapacity. (Unit: 1000Btu/h)
4. different air volume in the above table,need to adjust in the field.
I&O manual
17
Cooling capacity — 15 Tons
Tab.7-16
5400
Air Flow(CFM)
Ent
DB
85
90
75
80
85
90
75
80
85
7200
75
TC
163.6 165.6 172.9 182.7 168.0 171.6 179.0 188.7 169.9 174.2 185.1 193.6 176.6 179.0 188.8 196.1
SC
131.5 155.8 166.0 175.3 138.7 165.6 173.6 183.0 146.1 167.2 177.7 185.9 152.3 171.8 181.3 188.2
TC
183.3 185.5 187.6 190.2 188.7 190.0 191.1 192.4 191.0 192.5 193.6 195.1 192.5 193.6 196.1 197.3
SC
104.7 127.8 149.8 172.9 109.3 132.7 157.1 180.2 111.2 136.4 162.0 187.6 113.7 140.1 166.8 193.6
TC
193.6 197.3 199.8 202.2 195.8 198.5 202.2 204.5 198.3 201.0 203.3 205.8 201.0 204.2 206.6 209.1
SC
72.2 96.8 117.0 136.4 73.6 99.0 119.6 138.6 74.9 99.9 121.6 143.7 76.1 101.0 123.1 147.6
TC
153.4 157.1 164.5 175.4 155.3 162.0 171.7 181.4 160.8 164.5 176.6 186.3 164.5 170.5 181.4 190.0
SC
125.3 149.8 159.5 170.1 132.7 157.1 166.6 176.0 140.1 159.5 171.3 180.8 146.1 165.4 176.0 184.3
TC
171.7 174.2 176.6 180.2 179.0 180.0 182.7 183.9 185.1 186.5 187.7 188.7 185.7 188.2 189.8 197.9
SC
99.9 123.0 146.1 169.2 104.1 129.0 153.5 179.0 108.1 132.8 160.8 186.3 111.1 138.9 166.8 188.9
TC
188.8 191.1 193.5 196.1 190.2 192.2 195.2 198.5 191.9 194.3 196.8 198.0 195.6 199.3 201.7 204.2
SC
69.0 93.1 114.8 135.2 70.5 96.3 117.8 140.1 71.8 97.9 120.7 143.7 73.2 99.5 123.0 147.4
TC
142.7 146.4 153.8 166.1 147.6 151.3 163.6 171.0 150.1 156.2 169.7 180.8 153.8 162.4 174.7 184.5
SC
119.6 140.5 147.6 159.4 127.9 145.2 157.0 164.1 135.3 151.5 164.6 173.2 140.1 157.5 169.4 179.0
TC
163.6 166.1 169.7 171.0 164.8 168.5 173.4 175.9 173.4 175.9 178.4 180.8 177.1 179.6 182.0 186.5
SC
94.6 118.1 141.3 165.7 109.0 124.2 149.8 170.6 102.6 130.3 157.1 175.4 106.3 135.2 164.5 184.5
TC
185.7 187.0 188.2 189.4 188.2 189.4 190.7 193.1 190.7 191.9 193.1 194.3 191.9 193.1 194.3 196.8
SC
65.6 89.2 111.7 132.8 67.0 92.3 115.5 138.9 68.3 95.3 118.6 142.4 69.6 96.6 121.5 148.8
TC
130.4 135.3 147.6 159.9 134.1 141.5 153.8 166.1 137.8 140.4 150.9 172.2 141.5 151.3 164.8 175.9
SC
114.5 131.2 143.2 155.1 121.6 135.8 147.6 159.4 127.9 136.2 146.9 167.0 127.3 146.8 159.9 170.6
TC
153.8 156.2 157.4 159.9 155.0 158.7 161.1 163.6 163.6 166.1 169.7 174.0 167.3 169.7 172.2 175.9
SC
98.4 113.4 136.5 159.9 103.3 119.9 145.1 163.6 108.2 125.5 151.3 168.8 101.8 131.6 161.1 172.4
TC
173.4 175.9 178.4 179.6 178.4 180.8 182.0 183.3 182.0 183.3 184.5 185.7 183.3 184.5 185.7 187.0
SC
62.1 85.6 108.9 131.6 63.5 89.8 113.2 136.5 66.4 92.3 118.1 143.9 66.4 95.9 120.5 146.4
TC
125.4 130.1 141.9 152.1 128.9 136.0 147.8 159.7 132.5 140.7 153.8 165.6 136.0 145.5 158.5 169.1
SC
110.1 126.2 137.7 147.5 117.0 131.9 143.4 154.9 123.0 136.5 149.1 160.6 122.4 139.7 152.1 162.4
TC
147.8 150.2 151.4 153.8 149.0 152.6 154.9 157.3 157.3 159.7 163.2 167.1 160.8 163.2 165.6 171.1
SC
87.6 109.0 131.3 153.8 99.0 115.3 139.6 152.6 104.1 120.6 145.5 162.1 97.9 126.5 154.9 166.0
TC
166.8 169.1 171.5 172.7 171.5 173.9 175.0 176.2 175.0 176.2 177.4 178.6 176.2 177.4 178.6 179.8
SC
59.7 82.3
67
85
6600
(F)
61
80
6000
90
75
80
85
90
73
61
Ambient Temperature
95
67
73
61
105
67
73
61
115
67
73
61
125
67
73
104.7 126.5 61.0 86.3
108.8 131.3 63.9 88.7 113.5 138.4 63.9 92.3 115.9 140.7
Notes:
1. All capacities are net and have considered indoor fan heat.
2. TC=Total Capacity. (Unit: 1000Btu/h)
3. SC=SensibleCapacity. (Unit: 1000Btu/h)
4. different air volume in the above table,need to adjust in the field.
I&O manual
18
Cooling capacity — 20 Tons
Tab.7-17
Air Flow(CFM)
Ent
DB
(F)
75
80
85
7600
90
75
80
85
8400
90
75
80
85
9200
90
75
80
85
TC
216.1 218.7 228.5 241.3 222.0 226.7 236.4 249.3 224.4 230.1 244.6 255.8 233.4 236.4 249.4
SC
173.7 205.9 221.6 234.1 183.3 218.7 229.3 241.8 193.1 223.2 237.2 248.1 201.2 229.3 242.0
TC
242.1 245.1 247.8 251.2 249.3 251.1 252.5 254.2 252.4 254.3 255.8 257.7 254.3 255.8 259.0
SC
138.3 168.8 197.9 228.5 144.5 175.3 207.5 238.1 146.9 180.2 214.0 247.8 150.2 185.1 220.4
TC
255.8 260.7 263.9 267.2 258.7 262.3 267.2 270.2 262.0 265.5 268.6 271.9 265.5 269.8 273.0
SC
95.4 127.9 154.5 180.2 97.2 130.8 158.0 183.1 99.0 132.0 160.7 189.8 100.6 133.4 162.7
TC
202.6 207.5 217.3 231.7 205.2 214.0 226.9 239.7 212.4 217.3 233.4 246.2 217.3 225.2 239.7
SC
165.6 197.9 210.7 224.8 175.3 205.5 217.8 230.1 185.1 210.7 226.3 238.8 193.1 218.5 232.5
TC
226.9 230.1 233.4 238.1 236.4 240.0 241.3 242.9 244.6 246.4 248.0 249.3 245.4 248.6 250.7
SC
132.0 162.5 193.1 223.6 137.5 170.5 202.8 236.4 142.8 175.5 212.4 246.2 146.7 183.5 220.4
TC
249.4 252.5 255.6 259.0 251.2 254.0 257.9 262.3 253.5 256.8 260.0 261.6 258.4 263.3 266.5
SC
91.2 123.0 151.6 178.6 93.1 127.2 155.7 185.1 94.9 129.4 159.4 189.8 96.7 131.5 162.5
TC
188.5 193.4 203.1 219.4 195.0 199.9 216.1 225.9 198.3 206.4 224.3 238.9 203.1 214.5 230.8
SC
158.0 187.6 197.0 212.8 169.0 193.9 209.6 219.1 178.8 200.2 217.5 231.7 185.1 208.1 223.8
TC
216.1 219.4 224.3 225.9 217.8 222.6 229.1 232.4 229.1 232.4 235.6 238.9 234.0 237.3 240.5
SC
125.0 156.0 186.7 218.9 144.0 164.1 197.9 209.1 135.5 172.1 207.5 238.9 140.4 178.6 217.3
TC
245.4 247.0 248.6 250.3 248.6 250.3 251.9 255.1 251.9 253.5 255.1 256.8 253.5 255.1 256.8
SC
86.6 117.8 147.6 175.5 88.6 122.0 152.6 183.5 90.2 125.9 156.7 188.2 92.0 127.6 160.6
TC
172.3 178.8 195.0 211.3 177.1 186.9 203.1 219.4 182.0 193.4 211.3 227.5 186.9 199.9 217.8
SC
151.3 173.4 189.2 204.9 160.7 181.3 197.0 212.8 169.0 187.6 204.9 220.7 180.9 193.9 211.2
TC
203.1 206.4 208.0 211.3 204.8 209.6 212.9 216.1 216.1 219.4 224.3 227.5 221.0 224.3 227.5
SC
130.0 149.8 180.4 211.3 136.5 158.4 191.8 216.1 143.0 165.8 199.9 227.5 134.6 173.9 212.9
TC
229.1 232.4 235.6 237.3 235.6 238.9 240.5 242.1 240.5 242.1 243.8 245.4 242.1 243.8 245.4
SC
82.1 113.1 143.8 173.9 83.9 118.6 149.5 180.4 87.8 121.9 156.0 190.1 87.8 126.8 159.3
TC
162.5 168.6 184.0 199.3 167.1 176.3 191.6 207.0 171.6 182.4 199.3 214.6 176.3 188.6 205.4
SC
147.2 163.6 178.4 193.3 151.6 171.0 185.9 200.7 159.4 177.0 193.3 208.2 170.3 182.9 199.3
TC
191.6 194.7 196.2 210.3 193.2 197.8 200.8 203.9 203.9 207.0 211.6 214.6 208.5 211.6 214.6
SC
122.6 141.3 170.2 189.3 128.8 149.5 180.9 199.8 134.9 156.4 188.6 210.3 126.9 164.0 200.8
TC
216.2 219.2 222.3 223.8 222.3 225.4 226.9 228.4 226.9 228.4 230.0 231.5 228.4 230.0 231.5
SC
77.4 106.7 135.7 164.0 79.1 111.9 141.0 170.2 82.8 115.0 147.2 179.4 82.8 119.6 150.2
61
67
85
6800
73
61
67
Ambient Temperature
95
73
61
105
67
73
61
115
67
73
61
125
67
73
Notes:
1. All capacities are net and have considered indoor fan heat.
2. TC=Total Capacity. (Unit: 1000Btu/h)
3. SC=SensibleCapacity. (Unit: 1000Btu/h)
4. different air volume in the above table,need to adjust in the field.
I&O manual
19
8.
START-UP
Electric heater control box
Before starting unit
●
Is the unit properly located and level with the proper
clearance?
●
Is the duct work correctly sized, run, taped, insulated, and
weatherproofed with proper unit arrangement? See Ductwork
Installation section.
●
Is the wiring properly sized and run according to the unit wiring
diagram?
●
Are all the wiring connections, including those in the unit,
tight?
●
Has the unit been properly grounded and fused with the
recommended fuse size? See Wiring Data.
●
Have the air conditioning systems been checked at the
service ports for charge and leak tested if necessary?
●
Does the condenser fan and indoor blower fan free without
rubbing, and are they tight on the shafts?
●
Are all covers and access panels in place to prevent air loss
and safety hazards?
Electric heater control box
access panel
Electric heater
Fig.9-2
WARNING
At least 1m flame resistant layer must be laid at the end
of the air duct internal surface.
Regulating belt of tension
Refer to Fig.9-3, loose 4 bolts, and move the electric motor to
adjust belt tension.
Starting the unit in the cooling mode
Voltage
With the unit operating, check the line voltage of the unit. The
voltage should be within the range shown on the unit
nameplate.
If low voltage is encountered, check the size and length of
the supply line from the main disconnect to the unit. The line
may be undersized for the length of the run.
Cooling shut down
Place the system selector in the OFF position or reset
thermostat at a setting above room temperature.
Do not de-energize the main power disconnect except when
unit is to be serviced.
The two bolts are used for
factory precision adjustment
only,that shall not be adjusted
except professional
maintenance staff.
Fig.9-3
4 bolts
●
●
Belt tension is measured by belt tension indicator
Calculate the deflection, deflection=A/64.
Measure the belt deflection force, the force shuold be
between the values shown in Tab.9-2
A(ce
nter
9.
MAINTENANCE
Belt tension indicator applied
to mid_center distance
dista
nce)
Regular maintenance
Some regular maintenance have been carry on by user,
includes: change the one-time dust filter, clean casing, wash
condenser and replace a new belt, as well as do some test for
the equipment.
Fig.9-4
Control box
Tab.9-1
A
Control box
access panel
Fig.9-1
I&O manual
20
Range (Ton)
A (mm)
7.5
10
328
418
15
576
20
525
Tab.9-2
●
Re-install the air filter
For required to deflection
Belt section
SPA
Small pulley
diameter (mm)
Newton(N)
Kilogram-force(kgf)
80 to132
25 to 35
2.5 to 3.6
Condenser coil
Unfiltered air circulates through the unit's condenser coil
can cause the coil's surface to become clogged with
dust, etc. Clean the coil, vertically (i.e., with the fins), and
stroke the coil surface with a soft brush. Be sure to keep
all vegetation away from the condenser coil area.
Maintenance performed by serviceman.
To keep your unit operating safely and efficiently, the
manufacturer recommends that a qualified serviceman
check the entire system at least once each year and any
other time that you feel one is needed. Your serviceman
should examine these areas of your unit:
NOTE
The belt which is too tight or too loose may generate noise
and be harmful to the unit.
Replace the air filter.
●
Filters
●
Loose filter access panel’s screws and remove it.
●
Motors and drive system components
●
Loose the knurled screw, and pull out the filter along the
supporting slot.
●
Economizer gaskets (for possible replacement)
●
●
Safety controls (for mechanical cleaning)
For 20 tons, see Fig.9-5.
●
knurled screw
●
●
filter access
panel
Electrical components and wiring (for possible replacement and connection tightness)
Condensate drain (for cleaning)
Unit duct connections (to see that they are physically
sound and sealed to the unit casing)
●
Unit mounting support (for structural integrity)
●
The unit (for obvious unit deterioration)
CAUTION
Do not operate the unit without the evaporator fan access
panel in place. Reinstall the access panel after performing
any maintenance. Operating the unit without the access panel
may result in severe personal injury or death.
air filter
Fig.9-5
Clean the air filter (Vacuum cleaner or fresh water may be
used to clean the air filter. If the dust accumulated too much,
please use soft brush and mild detergent to clean and dry out
in cool place) .
This unit is not intended for use by persons (including
children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of
the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play
with the unit.
Disconnect the
maintenance.
power
supply
before
cleaning
and
The unit shall be installed in accordance with national wiring
regulations.
DISPOSAL: Do not dispose this product as
unsorted municipal waste. Collection of such waste
separately for special treatment is necessary.
Fig.9-7
●
The air-in side should face up when using vacuum cleaner.
●
The air-in side should face down when using water.
CAUTION
Do not dry out the air filter under direct sunshine or heat.
Do not dispose of electrical appliances as unsorted
municipal waste, use separate collection facilities.
Contact you local government for information regarding
the collection systems available.
If electrical appliances are disposed of in landfills or
dumps, hazardous substances can leak into the
groundwater and get into the food chain, damaging your
health and well-being.
I&O manual
21