Daikin EWAQ-ACV3, Руководство по установке

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Installation manual
7
EWAQ+EWYQ009~0 EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
O
VERVIEW OF THE UNIT
Opening the unit
Main components
Hydraulic compartment (door 3)
1. Air purge valve
Remaining air in the water circuit will be automatically removed
via the air purge valve.
2. Temperature sensors
Three temperature sensors determine the water and refrigerant
temperature at various points in the water circuit.
3. Heat exchanger
4. Expansion vessel (10 l)
5. Refrigerant liquid connection
6. Refrigerant gas connection
7. Shut-off valves
The shut-off valves on the water inlet connection and water
outlet connection allow isolation of the unit water circuit side
from the residential water circuit side. This facilitates draining
and filter replacement of the unit.
8. Water inlet connection
9. Water outlet connection
10. Drain and fill valve
11. Water filter
The water filter removes dirt from the water to prevent damage
to the pump or blockage of the evaporator. The water filter must
be cleaned on a regular base. See
"Maintenance" on page 22 .
12. Manometer
The manometer allows readout of the water pressure in the
water circuit.
13. Flow switch
The flow switch checks the flow in the water circuit and protects
the heat exchanger against freezing and the pump against
damage.
14. Pump
The pump circulates the water in the water circuit.
15. Pressure relief valve
The pressure relief valve prevents excessive water pressure in
the water circuit by opening at 3 bar and discharging some
water.
Functional diagram of hydraulic compartment (door 3)
Door 1 gives acces to the compressor compartment and electrical parts
Door 2 gives acces to the electrical parts of the hydraulic compartment
Door 3 gives acces to the hydraulic compartment
Switch off all power supply — i.e. unit power supply —
before removing doors 1 and 2.
Parts inside the unit can be hot.
3
2 2
1
14
2
7
7
10
11
15
9
8
5
13
3
6
2
2
4
1
12
1 Manometer 8 Flow switch
2 Air purge valve 9 Drain/fill valve
3 Expansion vessel 10 Filter
4 Pressure relief valve 11 Shut-off valve water inlet with
drain valve
5 Pump
6 Shut-off valve water
outlet
R11T
R13T
R14T
Temperature sensors
7 Heat exchanger
R14T
H
2
O
t
R13T
t >
R11T
t >
3
1 5 6
11 7 8 9 10
2 4