Sanden Vendo CDU-L R06A2B User manual

Delivering CO2solutions
in commercial refrigeration
SANDEN
CO2RETAIL SOLUTIONS
CDU-L R06A2B 3 Phases 400V
installation guide
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Table of content
1. Product specifications
2. Product diagram
3. Operation diagram
4. Installation instruction
5. Handling
6. Piping connection
7. Power supply connection
8. External ON/OFF control signal
9. Piping and vacuuming
10. CO₂ charging
11. Parameters changing
12. First level of maintenance
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1. Product specifications CDU-L
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2. Product diagram CDU-L
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3.1. Operation diagram:
MT loop A&B
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1
2
3
4
5
1
2
3
4
5
6
7
8
9
10 51
2
3
4
Loop-A
Loop-B
Loop-C
OFF
MT A&B (Te -5℃Tambient 10 ℃)
Loop-A
(CLA)
Loop-B
(CLB)
Loop-C
(CHC)
5 1
2
3
4
Loop-A
Loop-B
MT A&B (Te -5℃Tambient 25 ℃)
6
7
8
910
Loop-C

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1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
910
Loop -A Loop -B
Loop -C
LT A&B (Te -30℃Tambient 25 ℃)
Loop-A
(CLA)
Loop-B
(CLB)
Loop-C
(CHC)
3.2. Operation diagram:
LT loop A&B

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1A
2A
3A
4A
5A
1B
2B
3B
4B
5B
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9
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Loop A: LT (Teva -30℃)
Loop B: MT (Teva -5℃)
Loop C: High stage compressor
Ambient Temperature : 25℃
1A
2A
3A
4A
5A
1B
2B
3B
4B
5B
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7
8
910
Loop A
Loop B Loop C
LT loop A & MT loop B
Loop A
(CLA)
Loop B
(CLB)
Loop -C
(CHC)
3.3. Operation diagram:
LT loop A & MT loop B

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4.1. Installation design of CDU-L
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1. Piping length
For Medium Temperature application
In case of several evaporators installed on a cooling loop, the total piping length must not exceed 60m (supply and return)
In case of single evaporator installed on a cooling loop, the distance should not exceed 30m (meaning 60m maximum piping, supply and return)
For Low Temperature application:
Only a single evaporator is installed per cooling loop, the distance should not exceed 20m (meaning 40m maximum piping supply and return)
Installation beyond this distance results in a lack of cooling and oil returned to compressor.
2. Evaporator volume
Medium Temperature application : < 15dm3 (risk of poor lubrication if > 15dm3)
Low Temperature application: < 5dm3 (risk of poor lubrication if > 5dm3)
3. Cooling capacity
4. Performance drop
* Please follow SANDEN requirement to avoid performance drop and ensure good lubrication of the compressor.
SANDEN requirement for CDU-L Installation design conditions

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4.2. Installation condition
CDU L: Distance 500 mm
from wall or barrier
Installation conditions
•Provide space on the top of product for the opening of product casing.
•Provide at least 500 mm of free space on the left and right-hand side and the front and
back.
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1. Installation conditions:
Provide space above the equipment to allow it to be opened (access for maintenance / reparation
operations).
Provide at least 500 mm of free space on the right-hand side.
Provide at least 500 mm of free space on the left-hand side and the front and back.
Protect direct sunlight and
then do not disturb fan air flow

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4.3. Installation condition
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2. Install the equipment in a dry and well-ventilated location, where air isn't recycled.
3. Place the equipment in a location sheltered from direct sunlight, heat sources and cold wind. If
exposing the equipment to direct sunlight is unavoidable, protect the device with a canopy.
4. Choose a location where the noise produced by the refrigerating unit will not disturb any close
neighbors. The noisiest parts are located on sides and at the back of the unit.
5. The air outlet must not be directed towards house windows or plantations.
6. Place the equipment on a solid, smooth surface.
7. Place the equipment in a location where dust and debris do not risk being sucked into the
evaporator fins.
8. In regions where significant snowfalls occur, always place the equipment under a roof, a shelter or
a snow-proof tarpaulin.
9. Choose a location that is protected from strong winds,
10. Avoid locations exposed to oil splashes, salt (within 2km from coast), sulfur gas (nearby hot water
springs), volcanic area.
11. To avoid any interference, the refrigerating unit must be installed at a minimum distance of 3 m
from any device producing or receiving electromagnetic waves (e.g. radio).