Fujitsu ASHG12LMCA User Manual

2. MODEL SELECTION
THE EXAMPLE OF CALCULATION3-2.
COOLING EXAMPLE3-2-1.
EXAMPLE 1

(When the connecting capacity for indoor unit is 100% or more)
Branch
box
Branch
box
Branch
box
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8
Room 1 Room 2 Room 3 Room 4 Room 5 Room 6 Room 7 Room 8
Main Piping length, L1=10m Branch Piping length, L2=10m
Design conditions

Design temperature


Indoor : 23°C DB / 16°C WB
Outdoor : 30°C DB
Pipe length


Main piping length : L1=10m
Branch piping length : L2=10m
Operation mode: Cooling


Selection of indoor unit

Room 1 Room 2 Room 3 Room 4 Room 5 Room 6 Room 7 Room 8
Remark
A-1 Cooling heat load kW 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7
A-2 Indoor unit models
AS07 AS07 AS07 AS07 AS07 AS07 AS07 AS07
A-3 Rated capacity (TC
in
)
r
kW 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.05
Cooling
A-4  i (
in
)
r
kW 2.05 x 8 =16.4
Sum of A-3
A-5
Connecting indoor unit
capacity (Cp)
1. / 1. 117 (1)
A-6
Capacity at design
temperature (TC
in
)
d
kW 1.78 1.78 1.78 1.78 1.78 1.78 1.78 1.78
See 6-1.
A-7
Total capacity at design
m (
in
)
d
kW 1.78 x 8 = 14.2
Sum of A-6
Calculate the Maximum capacity of outdoor unit

Remark
B-1 Outdoor unit model AO

G45LBT8
B-2 Rated capacity (TC
out
)
r
kW 14.0
Cooling
B-3 Capacity change rate by temperature conditions 13.9 / 14.0 = 0.993
Se e Fi g.1
B-4 Capacity change rate by indoor units connecting capacity kW 15.4
See Fig.2
B-5 mnin in  i n 0.98 x 0.942 = 0.923
See 5-1.
B-6 Maximum capacity of outdoor unit (TC
out
)
c
kW 15.4 x 0.993 x 0.923 = 14.1
(B-4) x (B-3) x (B-5)
Decide system capacity

Remark
C-1 System capacity kW 14.1
Smaller one of (A-7)
and (B-6)
Calculate actual capacity of each indoor unit

Room 1 Room 2 Room 3 Room 4 Room 5 Room 6 Room 7 Room 8
Remark
Actual capacity of each indoor
unit
kW 1.76 1.76 1.76 1.76 1.76 1.76 1.76 1.76
(A3) x (C1) / (A4)
Actual capacity of all indoor units is larger than cooling heat load of each room.
- (02 - 05) -
MODEL SELECTION MODEL SELECTION

Fujitsu ASHG12LMCA Specifications

General

Type	Split system
Timer	Yes
Multi-split	-
Product color	White
Dehumidifying capacity	1.8 l/h
Timer duration (maximum)	24 h
Air conditioner functions	Cooling, Dehumidifying, Heating
Cooling capacity in watts (max)	3900 W
Cooling capacity in watts (min)	900 W
Heating capacity in watts (max)	5300 W
Cooling capacity in watts (nominal)	3400 W
Cooling energy efficiency (EER, W/W)	3.5
Heating energy efficiency (COP, W/W)	3.92
Seasonal efficiency rating (cooling) (SEER)	7
Heating capacity in watts (nominal) (Warmer heating season)	- W
Heating capacity in watts (nominal) (Average heating season)	4000 W
Seasonal efficiency rating (heating) (SCOP) (Average heating season)	4
AC input voltage	230 V
AC input frequency	50 Hz
Design load (cooling)	- kW
Energy efficiency class (cooling)	A++
Power consumption (cooling) (max)	970 W
Power consumption (heating) (max)	1020 W
Annual energy consumption (cooling)	170 kWh
Hourly energy consumption (cooling)	- kWh
Energy efficiency class (heating) (Average heating season)	A+
Annual energy consumption (heating) (Average heating season)	1225 kWh
Indoor unit type	Wall-mountable
Indoor unit depth	203 mm
Indoor unit width	840 mm
Indoor unit height	268 mm
Indoor unit weight	8500 g
Indoor unit noise level (high speed)	43 dB
Outdoor unit depth	293 mm
Outdoor unit width	663 mm
Outdoor unit height	535 mm
Outdoor unit weight	26000 g
Outdoor unit noise level	50 dB
Airflow	750 m³/h