Product Selection; Product Lineup; System Design; Installation Work - Fujitsu Airstage Uty-Vdgu Installation Manual

3. PRODUCT SELECTION

• Failure to observe the selection conditions described below will affect the outdoor unit
service life and operational reliability.
• When selecting air handling unit, it must be designed for R410A refrigeration.

3.1. Product Lineup

3.1.1. Product Lineup
Unit Name Model Name
Control unit UTY-VDGU
UTP-VU30A
EEV unit UTP-VU60A
UTP-VU90A
3.1.2. EEV unit Selection
• The EEV unit is selected according to the capacity class conditions.
• If the capacity class is 144 kBTU/h (40.0 kW) or 180 kBTU/h (50.0 kW), 2 EEV units are
connected (in parallel).
Capacity Class
18 24
[kBTU/h]
EEV unit model No. 30
Cooling capacity 18 24
[kBTU/h (kW)] (5.3) (7.0)
Heating capacity 20 27
[kBTU/h (kW)] (5.9) (7.9)
Heat exchanger
Refer to the Design & Technical manual.
capacity
Airflow rate
624 706
(Reference)
(1,060) (1,200)
[CFM (m³/h)]
14 to 18.1
18 to 24
Cooling
(4.1 to (5.4 to
Capacity
5.3) 7.0)
range
[kBTU/h
15.6 20.1
(kW)] to 20 to 27
Heating
(4.6 to (6.0 to
5.9) 7.9)
Evaporation tem-
Refer to the Design & Technical manual.
perature
Condensation
Refer to the Design & Technical manual.
temperature
Pipe size
Liquid
pipe
EEV
unit
(b) (b)
Gas pipe
(a)
Capacity Class 18 24
[kBTU/h (kW)] (5.0) (6.3)
(a) 5/8
Gas (15.88)
Pipe size (b)
[in (mm)] Liquid
(c)
Liquid
Pipe length
Liquid
pipe
EEV
unit (a)
Gas pipe
(a) (b) (c)
≤ 16 ft
(≤ 5 m)
En-3
Environment specifications
• Temperature: -4.0 to 114.8 °F (-20 to 46 °C)
• Humidity: 10 to 90% RH (No condensation)
30 36 48 60 72 96
60 90
30 36 48 60 72 96
(8.8) (10.6) (14.1) (17.6) (21.1) (28.1)
34 40 54 67 81 108
(10.0) (11.7) (15.8) (19.6) (23.7) (31.7)
895 941 1,177 1,318 2,095 2,354
(1,520) (1,600) (2,000) (2,240) (3,560) (4,000)
24.1 30.1 36.1 48.1 60.1 72.1
to 30 to 36 to 48 to 60 to 72 to 96
(7.1 to (8.9 to (10.7 to (14.2 to (17.7 to (21.2 to
8.8) 10.6) 14.1) 17.6) 21.1) 28.1)
27.1 34.1 40.1 54.1 67.1 81.1
to 34 to 40 to 54 to 67 to 81 to 108
(8.0 to (10.1 to (11.8 to (15.9 to (19.7 to (23.8 to
10.0) 11.7) 15.8) 19.6) 23.7) 31.7)
Liquid
pipe
EEV
(c)
unit
(c)
(b)
(c)
(c)
Gas pipe
(a)
30 36 48 60 72 96
(8.0) (10.0) (12.5) (14.0) (20.0) (25.0)
3/4 7/8
(19.05) (22.2)
3/8 1/2
(9.52) (12.70)
—
Liquid
pipe
EEV
(d)
unit
(b)
(e)
(c)
Gas pipe
(d) (e) (d) + (f)
≤ 6 ft
(≤ 2 m)

3.2. System Design

3.2.1. Basic Refrigerating System Configuration
Using the DX-kit enables
indoor units manufactured
by other than Fujitsu
general to be used in the
Fujitsu general refrigerant
system.
*1: DX-kit = Control unit
+ EEV unit
3.2.2. Basic DX-kit System Configuration
(1) System Pattern 1
External controllers (DDC)
not manufactured by
Fujitsu general control the
Fujitsu general outdoor
units and indoor units
(refrigerant cycle devices,
etc.) not manufactured by
144 180
Fujitsu general. With this
system, control using a
90 + 90
Fujitsu general VRF con-
144 168
troller is not possible.
(42.2) (49.2)
162 188
For control line details,
(47.5) (55.1)
see "External Input and
External Output".
3,767 4,709
(6,400) (8,000)
96.1 144.1
to 144 to 168
(28.2 to (42.3 to
42.2) 49.2)
108.1 162.1
to 162 to 188
(2) Pattern 2
(31.8 to (47.6 to
Fujitsu general remote
47.5) 55.1)
controllers and control
devices directly control
Fujitsu general outdoor
units and indoor units
(refrigerant cycle devices,
etc.) not manufactured by
Fujitsu general. A system
configuration example is
shown below.
(b)
144 180
(40.0) (50.0)
1-1/8
(28.58)
5/8
(15.88)
1/2
3.2.3. Pipe Conditions
(12.70)
(f)
(e) + (f)
≤ 16 ft
(≤ 5 m)

4. INSTALLATION WORK

Correct initial installation location is important because it is difficult to move unit after it is
installed.

4.1. Selecting an installation location

Decide the mounting position together with the customer as follows.
Select installation locations that can properly support the weight of the DX-kit. Install the
units securely so that they do not topple or fall.
Outdoor unit
DX-kit (*1)
Indoor unit
System configuration
diagram
Fujitsu general-approved devices
Outdoor unit
Control line
External controller
not manufactured
by Fujitsu general
Wired remote
controller
System Configuration
Diagram
Fujitsu general-approved devices
Outdoor unit
Wired remote
controller
Control line
Thermistor × 4
Indoor unit
Straight pipe = 8 in
(200 mm) or more
R
Heat
Gas pipe
Exchanger
WARNING
Indoor unit Indoor unit
Piping
Wiring
EEV unit
Control unit
Thermistor × 4
Indoor unit
Piping
Wiring
EEV unit
Control unit
EEV
Liquid pipe
unit