System Design

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Welcome to VRF System Design Training Course for
System Sales engineer Pin CAI Akimasa SHIRAI
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1. EQUIPMENT SELECTION

• 1-1 EQUIPMENT SELECTION PROCEDURE / LINE-UP
• 1-2 MODEL SELECTION AND CAPACITY CALCULATION
• 1-3 RESTRICTIONS ON EQUIPMENT SELECTION

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• 1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP

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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
INDOOR UNIT LINEUP (1/2)
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
INDOOR UNIT LINEUP (2/2)
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
REQUIRED OPTIONAL PARTS
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OUTDOOR UNIT LINEUP
Controller Box
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OUTDOOR UNIT COMBINATION
CAPACITY RANGE
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
CONTROLLER UNIT LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
ADAPTOR / CONVERTOR LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OPTIONAL PARTS (OTHERS) (1/2)
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OPTIONAL PARTS (OTHERS) (2/2)
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OPTIONAL PARTS (BRANCH KIT) (1/3)
90, 91, 180 and 181 are the total values for the
indoor unit model code connected downstream.
84 to 173
91 to 180
7 to 90
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OPTIONAL PARTS (BRANCH KIT) (2/3)
2 branches Separation tube
90, 91 180 are the total values for the indoor
unit model code connected downstream.
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1-1 EQUIPMENT SELECTION PROCEDURE / LINEUP
OPTIONAL PARTS (BRANCH KIT) (3/3)
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
EXAMPLE
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
COOLING HEAT LOAD 120W / m2
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(TCin)f From capacity table
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
Compensation coefficient 0.903
H 20m
L 67m
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
Room 5 (TCin)e lt Heat load Change indoor unit
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
AU30
8.80
9.43
8.52
(TCin)e gt Heat load
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
?
?
68.4
Sum of ?
73.3
Sum of ?
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
22HP (AJ126LATF AJA72LATF)
62.4
68.4 / 62.4 109.6
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
22HP (AJ126LATF AJA72LATF)
62.4
68.4 / 62.4 109.6
68.99
0.903
69.88 x 0.903 63.1
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
22HP (AJ126LATF AJA72LATF)
69.88
0.903
69.88 x 0.903 63.1
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
11.7 11.7 11.7 11.7
8.12 8.12
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
Smaller than heat load
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
22HP ? 24HP
24HP (AJ126LATF AJA90LATF)
68.0
68.4 / 68.0 100.6
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
22HP ? 24HP
24HP (AJ126LATF AJA90LATF)
68.0
68.4 / 68.0 100.6
73.10
0.903
66.0
Total of indoor unit 73.3 kW
66.0
12.3 12.3 12.3 12.3 8.49
8.49
12.0 12.0 12.0 12.0 7.44
8.40
Actual capacity ? Heat load
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Cooling
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Cooling
Indoor temp 19?WB
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Cooling
Rated capacity ratio 100
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Heating
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Heating
Indoor temp 20?DB
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1-2 MODEL SELECTION AND CAPACITY CALCULATION
(System capacity characteristic)
Heating
Rated capacity ratio 100
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
CONNECTABLE UNIT IN ONE REFRIGERANT SYSTEM
Master Unit
Slave Unit
Slave Unit
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
MAXIMUM CONNECTABLE INDOOR UNIT (1/2)
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
MAXIMUM CONNECTABLE INDOOR UNIT (1/2)
SIndoor units capacityOutdoor unit
capacity Based on rated cooling capacity
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
OUTDOOR UNIT COMBINAION
Selecting outdoor unit capacity in order
of Master Unit ? Slave unit 1 ? Slave unit 2
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
THE MAXIMUM WIRING LENGTH OF VRF NETWORK SYSTEM
THE MAXIMUM CONNECTION OF VRF NETWORK SYSTEM
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1-3 RESTRICTIONS ON EQUIPMENT SELECTION
1 count
4 count
5 count
Case 1 (O.U.60 units) Count of outdoor unit
10 x 1 10 x 4 10 x 5 100 (counts)
Case 2 (O.U.50 units) Count of outdoor unit
10 x 1 5 x 4 10 x 5 80 (counts)