Sinclair SDV5 Series User manual

OUTDOOR UNITS SDV5-100-160EAS
COMMERCIAL AIR CONDITIONERS SDV5

Original instructions
IMPORTANT NOTE:
Read this manual carefully before installing or operating
your new air conditioning unit. Make sure to save this
manual for future reference.

1
CONTENTS
Part 1 General Information............................................................................ 3
Part 2 Component Layout and Refrigerant Circuits ..................................... 7
Part 3 Control ............................................................................................... 18
Part 4 Field Settings..................................................................................... 28
Part 5 Electrical Components and Wiring Diagrams .................................. 33
Part 6 Diagnosis and Troubleshooting......................................................... 43

2
Part 1
General Information
1 Indoor and Outdoor Unit Capacities........................................................ 3
2 External Appearance............................................................................... 4
3 Combination Ratio .................................................................................. 5

3
1 Indoor and Outdoor Unit Capacities
1.1 Indoor Units
1.1.1 VRF indoor units
Table 1-1.1: Standard indoor unit abbreviation codes
Abbreviation Abbreviation
Type Type
code code
C1A One-way Cassette DHA High Static Pressure Duct
Two-way Cassette HA Wall-mounted
CA Compact Four-way Cassette FA Ceiling & Floor
CA Four-way Cassette FCA Floor Standing
DA Medium Static Pressure Duct PA Console
Table 1-1.2: Indoor unit capacity range
Capacity
Capacity
C1A CA CA DA DHA HA FA FCA PA
kW kBtu/h HP
index
1.8 5 0.6 18 18
— — — — — — — — —
2.2 7 0.8 22 22 22 22
—
22
—
22
—
22 22
2.8 9 1 28 28 28 28 28 28
—
28
—
28 28
3.6 12 1.25 36 36 36 36 36 36
—
36 36 36 36
4.5 15 1.6 45 45 45 45 45 45
—
45 45 45 45
5.6 19 2 56 56 56
—
56 56
—
56 56 56
—
7.1 24 2.5 71 71 71
—
71 71 71 71 71 71
—
8.0 27 3 80
— — —
80 80 80 80 80 80
—
9.0 30 3.2 90
— — —
90 90 90 90 90
— —
10.0 34 3.6 100
— — —
100
— — — — — —
11.2 38 4 112
— — —
112 112 112
—
112
— —
14.0 48 5 140
— — —
140 140 140
—
140
— —
16.0 55 6 160
— — —
160 160 160
—
160
— —
20.0 68 7 200
— — — — —
200
— — — —
25.0 85 9 250
— — — — —
250
— — — —
28.0 96 10 280
— — — — —
280
— — — —
S D V 5 - 1 0 0 E A S S D V 5 - 1 0 0 E A S s S S S
1.2 Outdoor Units
Table 1-1.5: Outdoor unit capacity range
Capacity Model Name
8kW
SDV5-80EAS
10kW
SDV5-100EAS
12kW SDV5-120EAS
14kW
SDV5-140EAS
15.5kW
SDV5-160EAS
Notes:
1. Individual Series (Small Series) outdoor units could not be combined.

4
2External Appearance
2.1 Indoor Units
Table 1-2.1: Indoor unit appearance
One-way Cassette Two-way Cassette
C1A
Compact Four-way Cassette Four-way Cassette
CA CA
Medium Static Pressure Duct High Static Pressure Duct
T2 DHA
Wall-mounted Ceiling & Floor
HA FA
Floor concealed Console
PA
2.2 Outdoor Units
Table 1-2.2: Outdoor unit appearance
8KW 10-12KW 14-16KW
FCA

5
3Combination Ratio
Table 1-4.1: Indoor and outdoor unit combination ratio limitations
Type Minimum combination ratio Maximum combination ratio
Mini C Series outdoor units 50%130%
Table 1-4.2: Combinations of Indoor and outdoor units
Outdoor unit capacity Sum of capacity indexes of
connected indoor units (standard
indoor units only)
Maximum number of
connected indoor units
kW Capacity
index
880 40 to 104 4
10 100 50 to 130 6
12 120 60 to 156 7
14 140 70 to 182 8
15.5 160 77.5to 201.5 9
Combination ratio = Sum of capacity indexes of the indoor units
Capacity index of the outdoor unit

6
Part 2
Component Layout and
Refrigerant Circuits
1 Piping Diagrams ...................................................................................... 7
2 Refrigerant Flow Diagrams ...................................................................... 9

7
1Piping Diagrams
Figure 2-1.1: 80 model Piping diagram
Figure 2-1.2: 100/120 model Piping diagram

8
Figure 2-1.3: 140/160 model Piping diagram
Key components:
1. Oil separator:
Separates oil from gas refrigerant pumped out of the compressor and quickly returns it to the compressor. Separation
efficiency is up to 99%.
2. Gas-liquid separator:
Stores liquid refrigerant and oil to protect compressor from liquid hammering.
3. Electronic expansion valve (EXV):
Controls refrigerant flow and reduces refrigerant pressure.
4. Four-way valve(ST1):
Controls refrigerant flow direction. Closed in cooling mode and open in heating mode. When closed, the heat
exchanger functions as a condenser; when open, the heat exchanger functions as an evaporator.
5. High and low pressure switches:
Regulate system pressure. When system pressure rises above the upper limit or falls below the lower limit, the high or
low pressure switches turn off, stopping the compressor. After 5 minutes, the compressor restarts.

9
2Refrigerant Flow Diagrams
Cooling operation
Figure 2-3.1: 80 model refrigerant flow during cooling operation
Figure 2-3.2: 100/120 model refrigerant flow during cooling operation

10
Figure 2-3.3: 140/160 model refrigerant flow during cooling operation
Oil return operation in cooling mode
Figure 2-3.4: 80 model refrigerant flow during oil return operation in cooling mode

11
Figure 2-3.5: 100/120 model refrigerant flow during oil return operation in cooling mode
Figure 2-3.6: 140/160 model refrigerant flow during oil return operation in cooling mode

12
Heating operation
Figure 2-3.7: 80 model refrigerant flow during heating operation
Figure 2-3.8: 100/120 model refrigerant flow during heating operation

13
Figure 2-3.9: 140/160 model refrigerant flow during heating operation
Oil return operation in heating mode
Figure 2-3.10: 80 model refrigerant flow during oil return operation in heating mode

14
Figure 2-3.11: 100/120 model refrigerant flow during oil return operation in heating mode
Figure 2-3.12: 140/160 model refrigerant flow during oil return operation in heating mode

15
Defrosting operation
Figure 2-3.13: 80 model refrigerant flow during defrosting operation
Figure 2-3.14: 100/120 model refrigerant flow during defrosting operation

16
Figure 2-3.15: 140/160 model refrigerant flow during defrosting operation

17
Part 3
Control
1 General Control Scheme Flowchart ....................................................... 18
2 Stop Operation ..................................................................................... 19
3 Standby Control .................................................................................... 19
4 Startup Control ..................................................................................... 20
5 Normal Operation Control .................................................................... 21
6 Protection Control................................................................................. 22
7 Special Control...................................................................................... 24

18
1General Control Scheme Flowchart
Sections 3-2 to 3-7 on the following pages detail when each of the controls in the flowchart below is activated.
Legend
Numbers in the top right-hand
corners of boxes indicate the
relevant section of text on the
following pages.
Conditions met
for oil return
Conditions met
for defrosting
Special control
Oil return operation
Defrosting operation
7
Stop operation
Abnormal shutdown
System stop
2
Standby control
Crankcase heater control
3
Startup control
Compressor startup delay control
Startup control for cooling operation
Startup control for heating operation
4
Thermo on
Normal operation control
Component control during normal operation
Compressor output control
Compressor step control
Electronic expansion valve control
5
Protection control
High pressure protection control
Low pressure protection control
Discharge temperature protection control
Compressor protection control
Disable heating control
6