Accessories; Accessories Supplied With This Unit; Overview Of The Indoor Unit; Main Components - Daikin EKHBRD-AY1 Installation Manual

A
CCESSORIES

Accessories supplied with this unit

(See figure 1)
1 Installation manual
2 Operation manual
3 Unpacking instruction sheet
4 Wiring diagram
5 User interface kit (remote controller, 4 fixing screws, 2 plugs)
6 Top plate fixing screws
7 Sound bottom plate fixing screws
8 Grommet (small)
9 Grommet (large)
10 Top plate insulation
11 Kit for lifting the unit (2 plates, 3 screws)
12 Refrigerant piping connections kit (4 piping parts, 2 screws,
2 clamps)
O
VERVIEW OF THE INDOOR UNIT

Main components

9 7 17 2 18
8 7 11
3
EKHBRD011~016AAV1+Y1
Indoor unit for air to water heat pump system
4PW54465-1C
19 4 2 1 22 6 5 20
21 10 2 2 23 23
16 15 2
1. Air purge valve
Remaining air in the water circuit will be automatically removed
via the air purge valve.
2. Temperature sensors (thermistors)
Temperature sensors determine the water and refrigerant
temperature at various points in the circuit.
3. Switch box
The switch box contains the main electronic and electrical parts
of the indoor unit.
4. Heat exchangers
5. Refrigerant liquid connection R410A
6. Refrigerant gas connection R410A
7. Shut-off valves
The shut-off valves on the water inlet connection and water
outlet connection allow isolation of the indoor unit water circuit
side from the residential water circuit side. This facilitates
draining and filter replacement of the indoor unit.
8. Water inlet connection
9. Water outlet connection
10. Drain 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
page 33.
13
12. Expansion vessel (12 l)
13. Manometer
The manometer allows readout of the water pressure in the
water circuit.
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.
16. Service ports R134a
17. Compressor
18. Accumulator
19. 3-way valve
The motorized 3-way valve controls whether the water outlet is
used for space heating or the domestic hot water tank.
20. 4-way valve
21. 2-way valve
22. Thermal cut-out
23. Electronic expansion valve
14
12
"Maintenance activities" on
Installation manual
6