Drummond MRBT 075CWN1-D, 100CWN1-D, 150CWN1-D, 200CWN1-D rooftop package Installation & owner's manual
Below you will find brief information for rooftop package MRBT 075CWN1-D, rooftop package MRBT 100CWN1-D, rooftop package MRBT 150CWN1-D, rooftop package MRBT 200CWN1-D. This manual provides instructions and information needed for the proper installation and operation of the unit, along with important safety precautions. Ensure that you read the entire manual before starting any installation or maintenance procedures. The unit should be installed and operated according to the instructions provided in this manual to ensure optimal performance and safety.
Advertisement
Advertisement
INSTALLATION & OWNER´S MANUAL
ROOFTOP PACKAGE TYPE (CONVERTIBLE)
7.5 , 10, 15
AND
20 TONS.
MRBT-075CWN1-D, MRBT-100CWN1-D,
MRBT-150CWN1-D, MRBT-200CWN1-D.
R-410A Refrigerant
MAN-I-IDRPC-0815
C O N T E N T S P A G E
ACCESSORIES.........................................................................................1
GENERAL INFORMATION........................................................................1
UNIT DIMENSIONS...............................................................................2
LOCATIONS AND RECOMMENDATIONS....................................................4
INSTALLATION ..........................................................................................4
ELECTRICAL WIRING .............................................................................6
SPECIFICATION .......................................................................................9
START-UP ..............................................................................................20
MAINTENANCE .......................................................................................20
Nomenclature
CODE
C/O
Hor.& Dow.
NAME
Cooling Only
Horizontal & Downflow Units (Optional)
1. ACCESSORIES
Tab.1-1
Name of accessories
Manual
Drain outlet
Snap ring
Drain pipe
Wire controller
Qty
1
1
1
1
1
2. GENERAL INFORMATION
Shape
Warnings and Cautions appear at appropriate locations throughout this manual.
Read these carefully.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
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.
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 operating checks must be performed with the unit operating, it is the technicians responsibility to recognize these hazards and proceed safely.
WARNING
Ask your dealer for installation of the air conditioner.
Incomplete installation performed by yourself may result in a water leakage, electric shock, and fire.
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.
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.
Keep far away from high-frequency equipment.
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.
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.
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.
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.
I&O manual
1
3. UNIT DIMENSIONS
7.5 Tons C/O Units ( Hor. & Dow.)
Units: mm
Electric heater control box access panel
Horizontal supply opening
Hole for electric heater power wires
Horizontal return opening
350
313
278
193
16
101
282
905
678
484
176
Fresh air
Fig.3-1
10 Tons C/O Units ( Hor. & Dow.)
Units: mm
194
Electric heater control box access panel
Hole for electric heater power wires
Horizontal supply opening
Horizontal return opening
485
628
290
822
407
406
60
103
504
Fresh air
Fig.3-2
I&O manual
2
15 Tons C/O Units ( Hor. & Dow.)
Units: mm
194
Electric heater control box access panel
Horizontal supply opening
506
577
Hole for electric heater power wires
313
Horizontal return opening
360
55
205
1029
143
504
824
Fresh air
Fig.3-3
20 Tons C/O Units ( Hor. & Dow.)
Units: mm
Electric heater control box access panel
Horizontal supply opening
880
673
Hole for electric heater power wires
315
Horizontal return opening
599
203
1031
55
143
644
703
294
Fresh air
Fig.3-4
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.
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
≥
1000
≥
1000
Overhead air
Clearance≥ 3000
≥
1000
4.2 Downflow application-curb mounting(for 7.5-20 tons C/O units.
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.
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.
Location of the unit must allow for service clearance around it.
Clearance of the unit must be given careful consideration.
Check the handling facilities to ensure the safety of personnel
5. INSTALLATION
Fig.4-1
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°.
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.
During lifting, anyone forbidden lingering under the lifting unit.
I&O manual
4
Spreader bars
≥60°
Fig.5-1
5.2 Rooftop-units
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.
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
Horizontal air deflector
Air down flow panel
Air down return panel
Fig.5-3
Air down return panel
Air down flow panel
Horizontal air supply panel
Horizontal air return panel
Fig.5-2
Fig.5-4
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.
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.
Complete the installation according to the instructions in the following sections of this manual.
Typical ground level application
Others 20
≤
X
≤
40
Fig.5-6
5.5 Ductwork
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.
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.
5.4 Condensate drain piping
Drain connection hole
Drain outlet
Snap ring
Drain pipe
Fig.5-5
Unit duct flance
Unit exterior
●
●
Weather proof this seam
Field duct
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
Fig.5-7
Air proof this seam
Field duct
Fig.5-8
I&O manual
6
6. ELECTRICAL WIRING
WARNING
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.
The appliance shall be installed in accordance with national wiring regulations.
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 appliance shall be installed in accordance with national wiring regulations.
R410A 220V 3N~ 60Hz
Tab.6-1
Nominal ton Model ty pe Ty pe of f low
C/O Hor.&Dow.
STC
(each)
203
7.5
C/O Hor.&Dow. 267
Compressor
RNC
(each)
30.7
IPT
(each)
8.6
43.6 11.2
10
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.
Compressor discharge temperature protection
When discharge temperature >257 ℉, the compressor will stop.
Reverse phase protection relay
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.
High pressure and low pressure protection
When high pressure ≥638 Psi, and lower pressure ≤21Psi, the unit will stop.
Ev aporator f an motor
Qty . RNC
1 6
IPT Qty .
1.87 1
Condenser f an motor
RNC
(each)
4.1
IPT
(each)
1.11
Qty .
1
Electric heating
IPT
-
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 -
15
C/O Hor.&Dow. 267 43.6 11.25 2 18.0 5.4 1 9.0 2.7 2 -
20
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℉ DB, 73.4℉ WB. Condenser Air Input
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 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
Minimum wire
size(mm 2 )
Wiring length between room thermostat and unit(one way)
10m
0.5
15m
0.5
20m
0.75
30m
0.75
40m
1.0
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”).
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
Error
Error
Error
Error
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Tab.6-2
Type
Normal
Normal
Normal
Error
Error
Error
Error
Error
Error
Error
Error
Content
Standby
Constraint cool
Run
Compressor phase sequence error or phase default
Outdoor coil sensor in sys. A error
Outdoor coil sensor in sys. B error
Overcurrent protection of system A are active
3 times within one hour
Overcurrent protection of system B are active
3 times within one hour
Indoor coil sensor in sys. A error
Indoor coil sensor in sys. B error
High、 low pressure protection or discharge temperature protection of system A reached 3 times
High、 low pressure protection or discharge temperature protection of system B reached 3 times
Indoor sensor error
Outdoor ambient sensor error
Wire controller output error
Overcurrent protection in sys.A
Overcurrent protection in sys.B
Overcurrent protection for indoor fan
Comprehensive protection for outdoor fan
Protection for Hi./Lo. pressure or exhaust temp. in sys.A
Protection for Hi./Lo. pressure or exhaust temp. in sys.B
Hi-pressure protection initiated in T2 evaporator stops the outdoor unit fan
Hi-pressure protection initiated in T2 evaporator stops the outdoor unit fan and compressor
Protection for condenser Hi-temp. in sys.A
Protection for condenser Hi-temp. in sys.B
Anti-freezing protection for evaporator in sys. A
Anti-freezing protection for evaporator in sys. B
Defrosting
Code
E4
E5
E6
E7 on
10.
E0
E1
E2
E3
E8
P0
P1
P2
E9
EA
Eb
P3
P4
P5
P6
P7
P8
P9
Pc
Pd dF
Comprehensive protection in sys.A
Comprehensive protection in sys.B
Remarks
Unit shall be power off to recovery
Unit shall be power off to recovery
Unit shall be power off to recovery
Unit shall be power off to recovery
I&O manual
8
7. SPECIFICATION
7.1 Physical Data
R410A 220V 3N
~
60Hz
Tab.71
Nominal ton
Model type
Type of flow
Capacity
Performance
Cooling capacity(net) (Btu/h) (
Ⅰ
)
Heating capacity (Btu/h)
EER
7.5 Tons
C/O
Hor. & Dow.
89000
Quantity/Type
Indoor coil
Tube diameter(in.)
Quantity used/diameter(mm)
Net weight(kg)
Refrigerant type
Flow control
Compressor
Outdoor coil
Outdoor fan
Indoor fan
Filters
Quantity
Quantity speeds motors/power(kW)
Nomial total CFM
Quantity used/model
Quantity speeds
Quantity motors/power(kW)
Nominal total CFM
Quantity
(
Ⅱ
)
Size recommended(mm)
9.7
1630
1065
1068
315
R410A
Capillary
1/Scroll
3
16
5/16
2
16
5/16
1/650
Propeller
Direct
1
1/1.11
1120±30
5880
1/10×10
FC centrifugal
Belt
Variable sheave
1/1.9
1680
3000
(2)
447X890X10
NOTES
(
Ⅰ
)
Cooling capacities are rated at 95
℉ ambient DB, 80
℉ entering DB, 67
℉ entering WB.
(
Ⅱ
)
Units are suitable for operation to ±20% of nominal CFM.
I&O manual
9
R410A 220V 3N
~
60Hz
T ab.7-2
Nominal ton
Model type
Type of flow
Capacity
Performance
Cooling capacity(net) (Btu/h) (
Ⅰ
)
Heating capacity (Btu/h)
EER
Flow control
Compressor
Quantity/Type
Outdoor coil
Indoor coil
Fins per inch
Quantity used/diameter(mm)
Outdoor fan
Quantity speeds
Quantity motors/power(kW)
Indoor fan
Nomial total CFM
Quantity used/model
Quantity speeds
Quantity motors/power(kW)
Filters
Nominal total CFM (
Ⅱ
)
Quantity
Size recommended(mm)
10 Tons
C/O
Hor. & Dow.
120000
10.5
2165
1335
1002
445
R410A
Capillary
1/Scroll
3.5
16
5/16
3
18
5/16
1/650
Propeller
Direct
1
1/1.11
1120±30
7060
1/12×12
FC centrifugal
Belt
Variable sheave
1/1.8
1680
3800
(2)
566X814X10
NOTES
(
Ⅰ
)
Cooling capacities are rated at 95
℉ ambient DB, 80
℉ entering DB, 67
℉ entering WB.
(
Ⅱ
)
Units are suitable for operation to ±20% of nominal CFM.
I&O manual
10
R410A 220V 3N
~
60Hz
T ab.7-3
Nominal ton
Model type
Type of flow
Capacity
Performance
Cooling capacity(net) (Btu/h)
(
Ⅰ
)
Heating capacity (Btu/h)
EER
Flow control
Compressor
Quantity/Type
Outdoor coil
Indoor coil
Quantity used/diameter(mm)
Outdoor fan
Quantity speeds
Quantity motors/power(kW)
Indoor fan
Nomial total CFM
Quantity used/model
Quantity speeds
Quantity motors/power(kW)
Filters
Nominal total CFM
(
Ⅱ
)
Quantity
Size recommended(mm)
15 Tons
C/O
Hor. & Dow.
180000
18
5/16
2/650
Propeller
Direct
1
2/1.11
1120±30
11000
1/15×15
FC centrifugal
Belt
10
2229
1825
1245
710
R410A
Capillary
2/Scroll
3
16
5/16
3
Variable sheave
1/3.9
1730
6600
(2)
900X815X12.5
NOTES
(
Ⅰ
)
Cooling capacities are rated at 95
℉ ambient DB, 80
℉ entering DB, 67
℉ entering WB.
(
Ⅱ
)
Units are suitable for operation to ±20% of nominal CFM.
I&O manual
11
R410A 220V 3N
~
60Hz
T ab.7-4
Nominal ton
Model type
Type of flow
Capacity
Performance
Cooling capacity(net) (Btu/h) (
Ⅰ
)
Heating capacity (Btu/h)
EER
Flow control
Compressor Quantity/Type
Outdoor coil
Indoor coil
Fins per inch
Quantity used/diameter(mm)
Outdoor fan
Quantity speeds
Quantity motors/power(kW)
Nomial total CFM
Quantity used/model
Indoor fan
Filters
Drive type
Quantity speeds
Quantity motors/power(kW)
Nominal total CFM (
Ⅱ
)
Quantity
Size recommended(mm)
NOTES
(
Ⅰ
)
Cooling capacities are rated at 95
℉ ambient DB, 80
℉ entering DB, 67
℉ entering WB.
(
Ⅱ
)
Units are suitable for operation to ±20% of nominal CFM.
20 Tons
C/O
Hor. & Dow.
240000
10.1
2753
2157
1245
925
R410A
Capillary
2/Scroll
4
16
5/16
3
16
5/16
2/750
Propeller
Direct
1
2/2.7
910±35
14000
1/18×18
FC centrifugal
Belt
Variable sheave
1/5.5
1730
8400
(3)
640X1008X12.5
I&O manual
12
7.2 Parameter For Air Volume
Parameter table for indoor unit air volume
T ab.7-5
7.5 T ons (60Hz)
0
25
50
60
75
100
125
150
175
Static pressure
(Pa)
Air flow
(CFM)
3250
3149
2996
2941
2886
2782
2664
2540
2411
Brake power
(KW)
1.83
1.78
Fan speed
(rpm)
1260
1265
1.70
1.66
1.63
1.58
1.53
1.47
1.41
1268
1271
1274
1277
1281
1285
1287
T ab.7-7
15 T ons (60Hz)
Static pressure
(Pa)
0 7209
Air flow
(CFM)
6814
6756
50
75
90
125
150
200
250
6631
6316
6044
5639
5227
Brake power
(KW)
5.11
4.85
4.71
4.65
4.45
4.32
4.08
3.82
Fan speed
(rpm)
1029
1029
1030
1031
1031
1032
1033
1034
T ab.7-6
10 T ons (60Hz)
Static pressure
(Pa)
0
25
50
75
100
125
150
175
Air flow
(CFM)
4325
4156
3929
3756
3579
3382
3218
3020
Brake power
(KW)
Fan speed
(rpm)
2.18
2.10
2.02
1.96
1.86
1.79
1.71
1.62
1000
1004
1006
1011
1014
1016
1020
1021
T ab.7-8
20 T ons (60Hz)
Static pressure
(Pa)
Air flow
(CFM)
125
150
200
250
300
25
50
75
100
9296
9041
8682
8389
8179
7826
7388
6955
6555
Brake power
(KW)
Fan speed
(rpm)
5.86
5.73
5.59
5.44
5.50
5.27
4.98
4.66
4.32
818
819
819
820
820
821
822
823
825
I&O manual
13
Curve diagr ram, air flow volumn.
7.5 T ons (60Hz)
250
225
200
175
150
125
100
75
50
25
0
2500 2600 2700 2800 2900 3000 3100 3200 3300 3400
Air volume(CFM)
Fig.
71
15 T ons (60Hz)
250
225
200
175
150
125
100
75
50
25
0
5200 5450 5700 5950 6200 6450 6700 6950 7200 7450
Air volume(CFM)
Fig.
7-3
10 T ons (60Hz)
250
225
200
175
150
125
100
75
50
25
0
2800 3000 3200 3400 3600 3800 4000 4200 4400 4600
Air volume(CFM)
Fig.72
20 T ons (60Hz)
300
270
240
210
180
150
120
90
60
30
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
NOTE
S h i e l d p a r t s i n b e l o w t a b l e s a r e s t a n d a r d w o r k i n g conditions for the unit.
T ab.7-9
7.5 Tons
Static pressure
(Pa)
0
Air flow
(CFM)
5880
Brake power
(kW)
Fan speed
(rpm)
0.78 900
10
20
5647
5411
0.79
0.80
889
875
7.3 Operating conditions
For proper performance, run the unit under the following temperature conditions:
T ab.7-13
Outdoor temperature: 64°F to 125°F
Cooling operation
Room temperature: 62°F to 90°F
Caution
Room relative humidity less than 80%. If the unit operates in excess of this figure
, the surface of the unit may attract condensation.
T ab.7-10
10 Tons
Static pressure
(Pa)
0
Air flow
(CFM)
7060
Brake power
(kW)
Fan speed
(rpm)
0.78 935
10
20
6765
6471
0.79
0.80
926
918
T ab.7-11
15 Tons
Static pressure
(Pa)
0
Air flow
(CFM)
11000
Brake power
(kW)
Fan speed
(rpm)
0.78×2 935
10
20
9800
9600
0.79×2
0.80×2
926
918
Tab.7-34
T ab.7-12
20 Tons
Static pressure
(Pa)
0
Air flow
(CFM)
14000
Brake power
(kW)
Fan speed
(rpm)
1.3×2 940
10
20
13500
13100
1.4×2
1.5×2
938
930
I&O manual
15
Cooling capacity — 7.5 Tons
T ab.7-14
Air Flow(CFM)
2600 2800 3000 3200
85
95
105
Ent DB
61
67
TC
SC
TC
(F) 75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90
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
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
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
73
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
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
SC
TC
61
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
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
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
67
SC
TC
SC
73
TC
SC
TC
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
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
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
61
SC
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
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
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
SC
TC
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
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
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
115
125
61
67
73
61
67
73
TC
SC
TC
TC
SC
TC
SC
SC
TC
SC
TC
SC
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
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
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
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
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
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
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
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
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
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
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
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
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
T ab.7-15
85
Air Flow(CFM)
3000 3400 3800 4200
Ent DB
61
(F) 75 80 85 90 75 80 85 90 75 80 85 90 75 80 85 90
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 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
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
67
SC
TC
73.2 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
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
73
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
95
105
61
67
73
61
67
TC
SC
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
92.7 94.6 96.4 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
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
TC
70.8 89.8 108.6 123.4 74.3 94.8 114.0 124.3 77.4 99.3 120.3 128.4 80.2 103.2 125.7 128.2
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
TC
SC
TC
46.3 65.4 81.5 97.8 47.2 66.7 84.3 101.9 47.5 67.6 85.8 104.7 48.4 68.7 87.9 106.8
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
88.6 90.4 92.2 94.0 95.2 97.1 99.0 101.0 93.4 95.3 97.2 99.1 101.2 103.2 105.3 107.4
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
SC
TC
67.6 86.4 105.9 115.6 71.3 92.1 113.7 117.9 74.2 98.3 115.5 117.6 77.8 102.8 115.6 121.3
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
73
115
125
61
67
73
61
67
73
TC
SC
TC
SC
TC
SC
SC
TC
SC
TC
SC
TC
44.3 63.2 81.0 98.3 45.2 65.6 85.3 103.7 45.7 67.5 86.9 106.8 46.3 69.7 91.2 110.4
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
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
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
63.5 83.2 102.1 104.1 67.3 88.2 105.3 107.4 70.8 94.1 107.3 110.5 74.1 99.6 110.3 112.5
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
42.2 61.3 80.1 98.7 42.9 64.1 84.3 104.1 43.7 66.8 87.9 109.3 44.3 69.1 91.2 112.7
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
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
SC
92.1 93.9 95.8 97.7 93.8 97.9 98.2 99.6 96.0 98.1 99.9 101.9 98.4 100.3 102.3 104.4
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
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
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
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
T ab.7-16
85
95
105
115
125
Air Flow(CFM)
Ent DB
5400 6000 6600 7200
(F) 75 80 85
TC
9 0 75 80
163.6 165.6 172.9 182.7 168.0 171.6
85 90 7 5 8 0
179.0 188.7 169.9 174.2
8 5
185.1
9 0 7 5 8 0 8 5
193.6 176.6 179.0 188.8
9 0
196.1
61
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
67
73
TC
SC
TC
SC
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
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
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
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
61
67
73
61
67
73
61
67
73
61
67
73
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
59.7 82.3
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
T ab.7-17
85
95
105
115
125
Air Flow(CFM)
Ent DB
TC
6800
(F) 75 80 85 9 0 75 80
7600
85 90 7 5 8 0
8400
8 5 9 0 7 5
9200
8 0 8 5
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
61
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
67
73
TC
SC
TC
SC
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
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
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
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
61
67
TC
SC
TC
SC
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
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
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
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
73
61
67
73
TC
SC
TC
SC
TC
SC
TC
SC
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
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
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
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
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
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
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
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
61
67
73
61
67
73
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
TC
SC
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
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
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
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
229.1
82.1
232.4
113.1
235.6
143.8
237.3 235.6
173.9 83.9
238.9
118.6
240.5 242.1
149.5 180.4
240.5
87.8
242.1
243.8
121.9
156.0
245.4
190.1
242.1
243.8
87.8 126.8
245.4
159.3
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
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
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
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
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
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
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?
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.
Electric heater control box access panel
WARNING
At least 1m flame resistant layer must be laid at the end of the air duct internal surface.
4 bolts
●
●
Regulating belt of tension
Electric heater
Calculate the deflection, deflection=A/64.
Fig.9-2
Refer to Fig.9-3, loose 4 bolts, and move the electric motor to adjust belt tension.
The two bolts are used for factory precision adjustment only,that shall not be adjusted except professional maintenance staff.
Belt tension is measured by belt tension indicator
Fig.9-3
Measure the belt deflection force, the force shuold be between the values shown in Tab.9-2
A(center distance)
Belt tension indicator applied to mid_center distance
9. MAINTENANCE
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.
Control box
Fig.9-4
A
Control box access panel
Fig.9-1
Tab.9-1
Range (Ton)
7.5
10
15
20
A (mm)
328
418
576
525
I&O manual
20
Tab.9-2
For required to deflection
Belt section
Small pulley diameter (mm)
Newton(N) Kilogram-force(kgf)
SPA 80 to132 25 to 35 2.5 to 3.6
NOTE
The belt which is too tight or too loose may generate noise and be harmful to the unit.
●
●
●
Replace the air filter.
Loose filter access panel’s screws and remove it.
Loose the knurled screw, and pull out the filter along the supporting slot.
For 20 tons, see Fig.9-5. knurled screw filter access panel 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) .
●
●
●
●
●
●
●
●
●
●
Re-install the air filter
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:
Filters
Motors and drive system components
Economizer gaskets (for possible replacement)
Safety controls (for mechanical cleaning)
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.
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 power supply before cleaning and maintenance.
The unit shall be installed in accordance with national wiring regulations.
●
●
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.
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary.
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

Public link updated
The public link to your chat has been updated.
Advertisement
Key features
- Convertible Rooftop Package
- R-410A refrigerant
- 7.5, 10, 15 & 20 tons capacities
- Horizontal and Downflow airflow options
- Discharge temperature protection
- High and low pressure protection
- Reverse phase protection relay
- Delay for compressor start-up