APC INROOM ACPSC3000 Instrucciones de operaciones Pagina 12
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InRoom CW/DX – Operating Instructions12
A-system
The air-cooled (A) direct expansion (DX)
system uses refrigerant as the heat transfer
medium. Room air re-circulates through the
internally mounted cooling unit which houses
the evaporator coil, scroll compressor and
refrigeration system. A remotely mounted air-
cooled condenser is connected, by specialist
installers, to the room unit with a sealed refrige-
ration circuit such that the absorbed room heat
load can be rejected to atmosphere.
G-system
The glycol/water cooled (G) version utilizes the
same refrigeration system as the type-A unit
and room air re-circulates through an evapo-
rator coil. However, an internally mounted plate
condenser is then used to transfer the room
heat load to a glycol solution. This conden-
ser water acts as a secondary heat transfer
medium, which is then pumped to a remotely
mounted air-cooled dry coo ler or cooling tower
where the heat is fi nally rejected to atmosphere.
Generally the condenser water system is in the
form of a ring main connected in parallel to a
number of stand-alone units mounted in the
critical space.
GE-system
The room air is drawn through both the free
cooling coil and the evaporator. In summer
operation with high external temperatures,
the evaporator absorbs heat from the room air
and transfers it to the refrigerant. In the plate
condenser a heat exchange between the refri-
gerant and the water/glycol takes place.
With low outside temperatures the free cooling
coil transfers the heat directly to the water/gly-
col.
The water/glycol is conveyed to the drycooler
by an external pump and two installed 2-way
ball valves controlled by the controller. The
drycooler rejects the heat to the outside air.
The cooling unit and the external drycooler
are connected with each other by a sealed
water/glycol circuit.
- Operating Instructions 1
- Contents 3
- 1. Safety 5
- 1.3 Safety instructions 6
- 1.4 Handling refrigerants 6
- First aid measures 7
- Repairs and modifi cations 7
- 2. Description 8
- K A X X X 9
- H X 3 X X 9
- Page code 9
- E / 1107 / 14 / 7 9
- Unit Variants 10
- Air fl ow (D) 11
- A-system 12
- G-system 12
- GE-system 12
- ACW-System 13
- GCW-System 13
- CW-System 13
- 2.2 Intended use 14
- Electronic expansion valve 15
- Dehumidifying circuit 15
- Safety features 15
- Component protection 16
- 3. Refrigerant circuit 17
- 3.1 Cooling system A 18
- 3.2 Cooling system G 19
- 3.3 Cooling system GE 20
- 3.4 Cooling system ACW 21
- 3.5 Cooling system GCW 22
- 3.6 Cooling system CW 23
- 4. Technical data 24
- Modell 211 311 25
- Modell 452 612 862 26
- Modell 452 612 28
- Modell 400 660 900 1100 1500 29
- 4.7 Dimensions 30
- 4.8 Weights 30
- 4.12 Dimensional drawings 33
- 5. Transport/Storage 34
- 6. Installation 35
- 6.3.2 Refrigerant Piping 37
- Overfi lling 42
- Underfi lling 42
- External water circuit 43
- PCW 1100 CW 46
- PCW 1500 CW 46
- PCW 900 D 46
- Bottom view 46
- Siphon installation 48
- 6.4 Electrical connection 49
- 7. Commissioning 51
- 8. Dismantling and disposal 53
- 9. Options 54
- 9.1.3 Supply connections 55
- 10.43 in 56
- 9.1.5 Operation 57
- 1 2 3 4 58
- 9.1.6 Maintenance 61
- Alarm list 63
- Table 2 - Alarms (continued) 64
- 9.2 Reheat 65
- 9.3 Raised fl oor stand 66
- For cabinet size 1 - 2 68
- For cabinet size 3 - 4 69
- For cabinet size 5 70
- 9.4 Air side connection 71
- 9.5 Waterside connection 72
- 9.6 Condensers 73
- SCS 120 SSA 74
- SCS 525 DSA - SCS 683 DSA 75
- SCS 192 SSA - SCS 312 SSA 75
- SCS 252 DSA - SCS 312 DSA 75
- 10. Maintenance 76
- 10.3 Refrigerant circuit 77
- 10.4 Air circuit 78
- 10.5 Water circuit 79
- 10.6 Unit in general 79
- 10.7 Competences 79
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