Table Of Contents - Daikin EWAT016CZN-A1 Installation, Maintenance And Operation Manual

C
ontents
1. INTRODUCTION ............................................................................. 4
1.1. Precautions against residual risks ....................................................4
1.2. General description ..........................................................................5
1.3. Information about the refrigerant ......................................................5
1.4. Installation information .....................................................................5
2. RECEIPT OF THE UNIT .................................................................. 7
3. STORAGE ........................................................................................ 7
4. MECHANICAL INSTALLATION ....................................................... 7
4.1. Safety ...............................................................................................7
4.2. Handling and lifting ...........................................................................7
4.2.1. Lifting the MONO unit ....................................................................8
4.2.2. Lifting the DUAL unit ......................................................................8
4.3. Positioning and assembly .................................................................8
4.4. Minimum space requirements ..........................................................9
4.5. Additional installation site requirements .........................................10
4.6. Noise and acoustic protection ........................................................ 11
4.7. Water circuit for connection with the unit ......................................... 11
4.7.1. Water piping ................................................................................ 11
4.7.2. Flow switch .................................................................................. 11
4.7.3. Preparing and checking the water circuit connection ...................12
4.7.4. Water pressure ............................................................................12
4.7.5. Hydraulic diagram .......................................................................12
4.8. Water treatment ..............................................................................13
4.9. Water pressure drops for filters .......................................................13
4.10. Pump kit mounted on board (Optional) ...........................................13
4.11. Operation limits ..............................................................................14
4.12. Operating stability and minimum water content in the system ........15
4.13. Calibrating the expansion vessel ....................................................15
4.14. Antifreeze protection for BPHE and recovery exchangers ..............16
5. ELECTRICAL INSTALLATION ...................................................... 16
5.1. General specifications ....................................................................16
5.2. Electric connections .......................................................................16
5.2.1. Cable requirements .....................................................................17
5.2.2. Interconnection cables ................................................................17
5.2.3. Safety device requirements .........................................................17
5.3. Phase unbalance ...........................................................................18
6. OPERATOR'S REPONSIBILITIES ................................................ 18
7. MAINTENANCE ............................................................................. 18
7.1. Pressure / temperature table ..........................................................19
7.2. Routine maintenance .....................................................................19
7.2.1. Air Heat Exchanger Maintenance ................................................19
7.2.2. Electrical Installation....................................................................20
7.2.3. Service and limited warranty........................................................20
7.2.4. Refrigerant circuit scheme ...........................................................22
8. LIST OF THE LABELS APPLIED TO THE UNIT............................ 26
9. CHECKS FOR THE FIRST STARTUP .......................................... 26
10. IMPORTANT INFORMATION ON THE REFRIGERANT USED ... 27
11. PERIODIC CHECKS AND COMMISSIONING OF PRESSURE
EQUIPMENT .................................................................................. 27
12. DISMISSION AND DISPOSAL ...................................................... 27
EWYT~CZ / EWAT~CZ
L
ist of figures
Figure 1 - Lifting the MONO unit ...................................................... 8
Figure 2 - Lifting the DUAL unit ........................................................ 8
Figure 3 - Mountig holes location (bottom view) .............................. 9
Figure 4 - DUAL unit ........................................................................ 9
Figure 5 - Units installed side by side along their shorter sides,
B or D .................................................................................... 10
Figure 6 - Units installed side by side along their longer sides
(Case 1 and Case 2) ............................................................. 10
Figure 7 - Seaside installation of the outdoor unit .......................... 10
Figure 8 - Hydraulic diagram ......................................................... 12
Figure 9 - Water filter pressure drops ............................................ 13
Figure 10 - External pressure head of Low Lift Pump .................... 13
Figure 11 - External pressure head of High Lift Pump .................... 13
Figure 12 - Operating limits on EWATCZ ....................................... 14
Figure 13 - Operating limits on EWYTCZ in cooling mode ............. 14
Figure 14 - Operating limits on EWYTCZ in heating mode ............ 14
Figure 15 - Minimum water volume correction factor ..................... 15
Figure 16 - Initial expansion vessel pressure on the basis of
maximum water volume ........................................................ 15
Figure 17 - Refrigerant circuit (P&ID) diagram for MONO circuit
EWYT~CZ unit ...................................................................... 22
Figure 18 - Refrigerant circuit (P&ID) diagram for MONO circuit
EWAT~CZ unit ...................................................................... 23
Figure 19 - Refrigerant circuit (P&ID) diagram for DUAL circuit
EWYT~CZ unit ...................................................................... 24
Figure 20 - Refrigerant circuit (P&ID) diagram for DUAL circuit
EWAT~CZ unit ...................................................................... 25
Figure 21 - Labels on the unit ........................................................ 26
L
ist of tabLes
Table 1 - Physical properties of R32 refrigerant ............................... 5
Table 2 - Minimum glycol percentage for low ambient
air temperature ....................................................................... 11
Table 3 - Flow Switch Setpoint....................................................... 12
Table 4 - Operating limits ............................................................... 12
Table 5 - Acceptable water quality limits ........................................ 13
Table 6 - Pump curve associated with each unit size ..................... 14
Table 7 - Minimum water content in the system ............................. 15
Table 8 - Table 1 of EN602041 Point 5.2 ........................................ 17
Table 9 - R32 Pressure/Temperature............................................. 19
Table 10 - Standard Routine Maintenance Plan ............................ 20
Table 11 - Routine Maintenance Plan for Critical Application
and/or Highly Aggressive Environment ................................... 21
Table 12 - Labels applied to the Unit .............................................. 26
Table 13 - Checks before starting up the unit ................................. 26
DEIMHP0140521_00EN
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