12. PARTS LIST ··················································103
1
···42
Revision:
• PUMY-71VM2, PUMY-125VM2, PUMY-125YM1,
PUMY-125YMA are added in Revised Edition-B.
• Please destroy OC183 Revised Edition-A.
1TECHNICAL CHANGE
CHANGE POINTS
CONTENTS
OF
CHANGE
Outdoor unit Service Ref.
Base outdoor unit Service Ref.
PUMY-
71VM
2
71VM1
125VM2
125VM1
125YM1
125YM
FAN MOTOR CAPACITOR
FAN MOTOR
COMPRESSOR
HIGH PRESSURE SENSOR
SEPARATOR ASSY
MULTI CONTROLLER BOARD
3.5+ 3.0+
PA6V40-UBPU6V60-GB
PA6V40-UAPU6V60-GA
PA6V60-UCPU6V60-GB
PA6V60-UBPU6V60-GA
PA6V60-UEPU6V60-GD
PA6V60-UDPU6V60-GC
CHV253FAAEHV33FAG
EHV46FAAEHV46FAG
EHV46FADEHV46FAK
Maker change
Substrate connection
wiring is attached.
Change in accordance with high pressure sensor.
Change in accordance with high pressure sensor.
Substrate connection
wiring is not provided.
( )( )
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Change of the service parts. Refer to the parts list for the details.
• A handy remote controller for use in conjunction
with the Melans centralized management system.
• Addresses must be set.
• Addresses setting is not necessary.
•
Only the indoor unit for MA remote controller
(the end of model name is -A) can be used.
MA remote controller
PAR-20MAA-E
2-1. UNIT CONSTRUCTION
Outdoor unit
Indoor unit
that can be
connected
Outdoor unit
Indoor unit
that can be
connected
Capacity
Number of units
Total systemwide capacity
Capacity
Number of units
Total systemwide capacity
3HP
PUMY-71VM
2~4units
50~130% of outdoor unit capacity
3HP
PUMY-71VM
PUMY-71VM2
Type 20~Type 80
1~4units
50~130% of outdoor unit capacity
Type 20~Type 125
1
5HP
PUMY-125VM,PUMY-125YM
2~5units
5HP
PUMY-125VM1, PUMY-125YM
PUMY-125VM2, PUMY-125YM1
PUMY-125YMA
Type 20~Type 125
1~8units
CMY-Y62-C-ECMY-Y64-CCMY-Y68
Branching pipe
components
Branch header
(2 branches)
Branch header
(4 branches)
Branch header
(8 branches)
Decorative panel
3
CMY-S65
Multi distribution
Piping on outdoor
unit
(5 branches)
2-2. UNIT SPECIFICATIONS
P L F Y - P 80 V AM - APU M Y - 125 Y M A
PAC type
AM
KM
M
KM
LMD
Frequency
conversion
controller
NEW frequency converter
one-to-many air conditioners
(flexible design type)
Indicates equivalent
to Cooling capacity
Indicates equivalent
to Cooling capacity
Power supply
V: Single phase
220/230/240V 50Hz
220V 60Hz
Power supply
V: Single phase
220/230/240V 50Hz
220V 60Hz
Y: 3-phase
380/400/415V 50Hz
380V 60Hz
L: Ceiling cassette
K: Wall-mounted type
E: Hidden skylight type
C: Ceiling suspended type
M: Ceiling cassette type
}
M-NET
control
M-NET control
MA control
Sub-number
Frequency
conversion
controller
Outdoor unit
MULTI-S
• Model 125 (5hp)..........For 5 rooms (VM)
...........For 8 rooms VM
1 YM
VM
2 YM1
YMA
( )
Service Ref.
w1
PUMY-71VM
PUMY-71VM
1
PUMY-71VM2w2
w1
PUMY-125VM
PUMY-125VM
1
PUMY-125YM
w2
PUMY-125VM2
PUMY-125YM1
PUMY-125YMA
Capacity
Cooling (kW)
Heating (kW)
8.3
9.3
2.6
8.0
9.0
2.6
14.5
16.3
3.5
14.0
16.0
3.5Motor for compressor (kW)
Cooling
W.B. 15~24°C
D.B. -5~46°C
Heating
D.B. 15~27°C
W.B. -15~15.5°C
Indoor-side intake air temperature
Outdoor-side intake air temperature
(1) Outdoor Unit
Cooling / Heating capacity indicates the maximum value at operation under the following condition.
w1. Cooling Indoor : D.B. 27°C / W.B. 19.5°C
Outdoor : D.B. 35°C
Heating Indoor : D.B. 21°C
Outdoor : D.B. 9°C / W.B. 6°C
(2) Method for identifying MULTI-S model
■ Indoor unit < When using Model 80 >
w2. Cooling Indoor : D.B. 27°C / W.B. 19.0°C
Outdoor : D.B. 35°C
Heating Indoor : D.B. 20°C
Outdoor : D.B. 7°C / W.B. 6°C
■ Outdoor unit <When using model 125 >
(3) Operating temperature range
Notes D.B. : Dry Bulb Temperature
W.B. : Wet Bulb Temperature
4
2-3. SYSTEM LAYOUT
A
B
a
indoor
1
C
b
indoor
2
D
c
indoor
3
e
d
indoor
4
indoor
5
First branch
(branching connector)
Outdoor unit
71
252540
125
804040
Outdoor unit
Indoor unit
Type 20 ~ Type 80Type 20 ~ Type 125
PUMY-71VM
PUMY-71VM
1
PUMY-71VM2
PUMY-125VM
PUMY-125VM
1
PUMY-125VM2
PUMY-125YM
PUMY-125YM
1
PUMY-125YMA
1~8 units
63~163
2~4 units
35~92
2~5 units
63~163
1~4 units
35~92
Indoor unit that can connected
Available capacity of indoor unit
Total capacity of units that can be included system
(50-130% of outdoor unit capacity)
2-3-1. System layout
One outdoor unit using branching connectors can be connected to a maximum of five or eight indoor units.
■ Examples of a branching method
2-3-2. Notes on the connection of indoor and outdoor units
Note: When the total capacity of indoor units exceeds the capacity of the outdoor unit (more than 100%), the rated power of
each indoor unit will be less when they are running simultaneously.
2-3-3. Capacity for outdoor unit
(1) Branching pipe
Model
CMY-Y62C-E
Branching connector
(2) Examples of System Construction (All models)
PIping method
Indoor units
CMY-Y64-C
CMY-Y68
CMY-S65
Outdoor unit
NUMBER OF BRANCHING POINTS
2
4
8
5
Total capacity of
indoor units.
PIping method
90
5
Indoor units
Outdoor unit
Total capacity of
indoor units.
160
3SPECIFICATIONS
Item
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Heat exchanger type
Compressor
Fan
Defrost method
Pressure gauge
Protection
Noise level
Weight
Refrigerant pipe size
Refrigerant
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Note 2: Rating conditions (JIS B 8615)
Heating Cooling
Starting current
Rated power supply
Model
Type o quantity
Starting method
Motor output
Capacity control
Daily cooling capacity
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Motor output
High pressure protection
Compressor protection
Blower protection
devices
Frequency converter circuit
Type o charge amount
Control method
Cooling : Indoor: D.B. 27: W.B. 19.5:
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 21:
: Outdoor : D.B. 7: W.B. 6:
Service Ref
Gas
Liquid
kcal/h
kW
A
%
A
kcal/h
kW
A
%
A
mm
kW
%
Legal tons
W
L
k/min
W
dB
kg
[ mm
[ mm
kg
7,100
3.50
17.5-16.7-16.0
91
15.0
8,000
3.65
18.2-17.4-16.7
91
15.0
Single phase 220-230-240V 50Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 900 o 320 (+30) 1280 o 1020 o 350 (+30)
CHV253FAA
Fully enclosed type o 1
Frequency converter start
2.6
Cooling 27-100% Heating 24-100%
1.1 (110Hz)
25-28-30
1.07 (MS56)
Propeller (direct) o 2
95
40 o 2
High pressure pressure sensor (3.0MPa)
Overheating, excessive current protection
52
93
15.88
9.52
R22 o 5
PUMY-125VM PUMY-71VM Unit
12,500
6.57
34.9-33.5-32.2
85
22.0
14,000
6.10
32.6-31.2-29.9
85
22.0
Crossover fin
EHV46FAA
3.5
Cooling 27-100% Heating 25-100%
1.9 (104Hz)
38-41-45
1.4 (MS32)
90
60 o 2
Reverse cycle
—
Thermal switch
Thermal switch
54
130
19.05
9.52
R22 o 8.5
Expansion valve
6
Item
Service Ref
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
Heating Cooling
Starting current
Rated power supply
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Unit
kcal/h
kW
A
%
A
kcal/h
kW
A
%
A
mm
7,100
3.50 / 3.63
17.5-16.7-16.0 / 18.1
91
15.0
8,000
3.65 / 3.53
18.2-17.4-16.7 / 17.6
91
15.0
Single phase 220-230-240V 50Hz / 220V 60Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 900 o 320 (+30) 1280 o 1020 o 350 (+30)
Heat exchanger type
Model
Type o quantity
Starting method
Motor output
Capacity control
Compressor
Daily cooling capacity
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Fan
Motor output
kW
%
Legal tons
W
L
k/min
W
Cooling 27-100% Heating 24-100%
CHV253FAA
Fully enclosed type o 1
Frequency converter start
2.6
1.1 (110Hz)
—
1.07 (MS56)
Propeller (direct) o 2
95
40 o 2
Defrost method
Pressure gauge
High pressure protection
High pressure pressure sensor (3.0MPa)
Compressor protection
Blower protection
Protection
devices
Frequency converter circuit
Noise level
Weight
Refrigerant pipe size
Refrigerant
Type o charge amount
Control method
Gas
Liquid
dB
kg
[ mm
[ mm
kg
Overheating, excessive current protection
52
93
15.88
9.52
R22 o 5
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Note 2: Rating conditions (JIS B 8615)
Cooling: Indoor : D.B. 27: W.B. 19.5:
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 21:
: Outdoor : D.B. 7: W.B. 6:
Crossover fin
Cooling 27-100% Heating 25-100%
Reverse cycle
—
Thermal switch
Thermal switch
Expansion valve
PUMY-125VM
1 PUMY-71VM1
12,500
6.57 / 6.43
34.9-33.5-32.2 / 33.6
85 / 87
22.0
14,000
6.10 / 6.03
32.6-31.2-29.9 / 31.5
85 / 87
22.0
EHV46FAA
3.5
1.9 (104Hz)
—
1.4 (MS32)
90
60 o 2
54
130
19.05
9.52
R22 o 8.5
7
Item
Service Ref
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
Heating Cooling
Starting current
Rated power supply
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Heat exchanger type
Model
Type o quantity
Starting method
Motor output
Capacity control
Daily cooling capacity
Compressor
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Fan
Motor output
Defrost method
Pressure gauge
High pressure protection
Compressor protection
Blower protection
Protection
devices
Frequency converter circuit
Noise level
Weight
Refrigerant pipe size
Refrigerant
Type o charge amount
Control method
Gas
Liquid
Unit
kW
kW
A
%
A
kW
kW
A
%
A
mm
kW
%
Legal tons
W
L
k/min
W
dB
kg
[ mm
[ mm
kg
2 PUMY-71VM2
8.0
3.50 / 3.63
17.5-16.7-16.0 / 18.1
91
15.0
9.0
3.65 / 3.53
18.2-17.4-16.7 / 17.6
91
15.0
PUMY-125VM
14.0
6.57 / 6.43
34.9-33.5-32.2 / 33.6
85 / 87
22.0
16.0
6.10 / 6.03
32.6-31.2-29.9 / 31.5
85 / 87
22.0
Single phase 220-230-240V 50Hz / 220V 60Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 900 o 320 (+30) 1280 o 1020 o 350 (+30)
Crossover fin
EHV33FAG
EHV46FAG
Fully enclosed type o 1
Frequency converter start
2.6
Cooling 36-100% Heating 32-100%
1.1 (83Hz)
—
1.4 (MS32)
Cooling 27-100% Heating 25-100%
3.5
1.9 (104Hz)
—
1.4 (MS32)
Propeller (direct) o 2
95
40 o 2
90
60 o 2
Reverse cycle
—
High pressure pressure sensor (3.0MPa)
Thermal switch
Thermal switch
Overheating, excessive current protection
52
102
15.88
9.52
R22 o 5
54
130
19.05
9.52
R22 o 8.5
Expansion valve
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Note 2: Rating conditions (JIS B 8616)
Cooling: Indoor : D.B. 27: W.B. 19.0:
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 20:
: Outdoor : D.B. 7: W.B. 6:
8
Item
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Heat exchanger type
Compressor
Fan
Defrost method
Pressure gauge
Protection
Noise level
Weight
Refrigerant pipe size
Refrigerant
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Model
Type o quantity
Starting method
Motor output
Capacity control
Daily cooling capacity
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Motor output
High pressure protection
Compressor protection
Blower protection
devices
Frequency converter circuit
Type o charge amount
Control method
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 21:
: Outdoor : D.B. 7: W.B. 6:
Service Ref
Gas
Liquid
Unit
kcal/h
kW
A
%
A
kcal/h
kW
A
%
A
mm
kW
%
Legal tons
W
L
k/min
W
dB
kg
[ mm
[ mm
kg
3 phase 380-400-415V 50Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 1020 o 350 (+30)
Fully enclosed type o 1
Frequency converter start
Cooling 27-100% Heating 25-100%
Propeller (direct) o 2
High pressure pressure sensor (3.0MPa)
Overheating, excessive current protection
PUMY-125YM
12,500
5.95
9.6-9.1-8.8
94
8.0
14,000
5.58
9.0-8.6-8.3
94
8.0
Crossover fin
EHV46FAD
3.5
1.9 (104Hz)
—
1.4 (MS32)
90
60 o 2
Reverse cycle
—
Thermal switch
Thermal switch
54
127
19.05
9.52
R22 o 8.5
Expansion valve
9
Item
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Heat exchanger type
Compressor
Fan
Defrost method
Pressure gauge
Protection
Noise level
Weight
Refrigerant pipe size
Refrigerant
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Note 2: Rating conditions (JIS B 8616)
Cooling : Indoor : D.B. 27: W.B. 19.0:
Heating Cooling
Starting current
Rated power supply
Model
Type o quantity
Starting method
Motor output
Capacity control
Daily cooling capacity
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Motor output
High pressure protection
Compressor protection
Blower protection
devices
Frequency converter circuit
Type o charge amount
Control method
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 20:
: Outdoor : D.B. 7: W.B. 6:
Service Ref
Gas
Liquid
Unit
kW
kW
A
%
A
kW
kW
A
%
A
mm
kW
%
Legal tons
W
L
k/min
W
dB
kg
[ mm
[ mm
kg
3 phase 380-400-415V 50Hz / 380V 60Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 1020 o 350 (+30)
Fully enclosed type o 1
Frequency converter start
Cooling 27-100% Heating 25-100%
Propeller (direct) o 2
High pressure pressure sensor (3.0MPa)
Overheating, excessive current protection
PUMY-125YM1
14.0
5.95
9.6-9.1-8.8 / 9.6
94
8.0
16.0
5.58
9.0-8.6-8.3 / 9.0
94
8.0
Crossover fin
EHV46FAK
3.5
1.9 (104Hz)
—
1.4 (MS32)
90
60 o 2
Reverse cycle
—
Thermal switch
Thermal switch
54
127
19.05
9.52
R22 o 8.5
Expansion valve
10
Item
Rated Cooling capacity
Rated power consumption
Operating current
Operating power factor
Starting current
Rated Heating capacity
Rated power consumption
Operating current
Operating power factor
Standard performance
External finish (Munsell colour-coded markings)
Dimensions H o W o D (Note 1)
Heat exchanger type
Compressor
Fan
Defrost method
Pressure gauge
Protection
Noise level
Weight
Refrigerant pipe size
Refrigerant
Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.
Model
Type o quantity
Starting method
Motor output
Capacity control
Daily cooling capacity
Heater <crankcase>
Refrigerating oil (Model)
Type o quantity
Airflow
Motor output
High pressure protection
Compressor protection
Blower protection
devices
Frequency converter circuit
Type o charge amount
Control method
: Outdoor : D.B. 35: W.B. 24:
Heating : Indoor : D.B. 20:
: Outdoor : D.B. 7: W.B. 6:
Service Ref
Gas
Liquid
Unit
kW
kW
A
%
A
kW
kW
A
%
A
mm
kW
%
Legal tons
W
L
k/min
W
dB
kg
[ mm
[ mm
kg
3 phase 380-400-415V 50Hz
Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>
1280 o 1020 o 350 (+30)
Fully enclosed type o 1
Frequency converter start
Cooling 27-100% Heating 25-100%
Propeller (direct) o 2
High pressure pressure sensor (3.0MPa)
Overheating, excessive current protection
PUMY-125YMA
14.0
5.95
9.6-9.1-8.8
94
8.0
16.0
5.58
9.0-8.6-8.3
94
8.0
Crossover fin
EHV46FAK
3.5
1.9 (104Hz)
—
1.4 (MS32)
90
60 o 2
Reverse cycle
—
Thermal switch
Thermal switch
54
127
19.05
9.52
R22 o 8.5
Expansion valve
11
4DATA
Model 20
Model Number for indoor unit
Model Capacity
Kcal/h
kW w
20
22
Model 25
25
28
Model 32
32
36
Model 40
40
45
Model 50
50
56
Model 63
63
71
Model 71
71
80
Model 80
80
90
Model 100
100
112
Model 125
125
140
4-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS
4-1-1. Method for obtaining system cooling and heating capacity:
To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings
of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with
the help of the tables on p.13~27.
(1) Capacity of indoor unit
w : Model of indoor unit “–A”
(2) Sample calculation
1System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of
the outdoor unit)
• Outdoor unit PUMY-125YM
• Indoor unit PKFY-P25VAM o 2 , PLFY-P50VLMD o 2
2According to the conditions in 1, the total capacity of the indoor unit will be: 25 o 2 + 50 o 2 = 150
3The following figures are obtained from the 150 total capacity row of the standard capacity table (p.23):
Capacity (kcal/h)
Cooling
13,026
AB
Heating
14,288
Outdoor unit power consumption (kW)
Cooling
6.15
Heating
5.98
Outdoor unit current (A)
Cooling
9.4
Heating
9.2
4-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:
(1) The capacity of each indoor unit (kcal/h) = the capacity A(or B) o
(2) Sample calculation (using the system described above in 4-1-1. (2) ):
During cooling: During heating:
• The total model capacity of the indoor unit is:
25 o 2 + 50 o 2=150kcal/h
Therefore, the capacity of PKFY-P25VAM and
PLFY-P50VLMD will be calculated as follows by
using the formula in 4-1-2. (1):
Model 25=13,026 o= 2,171kcal/h
Model 50=13,026 o= 4,342kcal/h
25
150
50
150
• The total model capacity of indoor unit is:
28 o 2 + 56 o 2=168kcal/h
Therefore, the capacity of PKFY-P25VAM and PLFYP50VLMD will be calculated as follows by using the formula in 4-1-2. (1):
w Before calculating the sum of total capacity of indoor units, please convert
the valve into the kW model capacity following the table on page 12.
380V, 50Hz/60Hz
27
4-3. CORRECTING COOLING AND HEATING CAPACITY
0.4
-5 010203040 46
0.6
0.8
1.0
1.2
1.4
0.6
0.8
1.0
1.2
1.4
22
20
18
16
22
20
18
16
0.4
-12 -100105-515
0.6
0.8
1.0
1.2
1.4
0.6
0.8
1.0
1.2
1.4
15
20
25
20
15
25
Service RefPUMY-VM/VM1/YMPUMY-VM2/YM1/YMA
Rated cooling capacity
Rated heating capacity
Indoor D.B. 27°C / W.B. 19.5°C
Outdoor D.B. 35°C
Indoor D.B. 21°C
Outdoor D.B. 7°C / W.B. 6°C
Indoor D.B. 27°C / W.B. 19.0°C
Outdoor D.B. 35°C
Indoor D.B. 20°C
Outdoor D.B. 7°C / W.B. 6°C
4-3-1. Correcting Changes in Air Conditions
(1)The performance curve charts (Figure 1, 2, 3, 4) show the rated capacity (total capacity) under the stated conditions when
standard length for piping (5m) is used. The rated power is derived from the capacity ratio and power ratio obtained for the
indoor and outdoor intake temperatures at time 1.
• Standard conditions:
• Use the rated capacity and rated power values given in the characteristics table for each indoor unit.
• The capacity is the single value on the side of the outdoor unit; the capacity on the sides of each indoor unit must be
added to obtain the total capacity.
(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the
individual capacity at the rated time and the total capacity at the rated time.
Individual capacity under stated conditions = total capacity under the stated conditions o
4-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping
1.0
0.95
0.9
5 10152025303540455055
1.0
35 (50%)
53 (75%)
71 (100%)
93 (130%)
0.95
0.9
0.85
0.8
5 101520253035404550
1.0
63 (50%)
94 (75%)
125 (100%)
163 (130%)
0.95
0.9
0.85
0.8
5 10152025303540455055
(1) During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total
in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length (5m) from figures 5 and 6
at first, and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.
(2) During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length (5m)
from Figure 7, and then multiply by the heating capacity from Figure 2 to obtain the actual capacity.
(3) Method for Obtaining the Equivalent Piping Length
Equivalent length for type 125 = (length of piping to farthest indoor unit) + (0.35 o number of bends in the piping) (m)
Length of piping to farthest indoor unit: type 125.....70m
4-3-3. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature (°CWB)
Correction factor
6
1.0
4
0.98
2
0.89
0.88
30
0
-2
0.89
-4
0.9
-6
0.95
-8
0.95
-10
0.95
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