Handleiding
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EUWY(*)5~24KBZW1
Packaged reversible air to water heat pumps
4PW61655-1 – 07.2010
Installation and operation manual
4
27 High-pressure switch for defrost operation
The high-pressure switch for defrost operation is installed on the
discharge pipe of the unit and measures the condenser
pressure (pressure at the outlet of the compressor). When the
pressure is too high, the pressure switch is activated. The
compressor stops (only during defrost operation).
When activated, it resets automatically.
Safety devices (See figure 1)
28 High-pressure switch
The high-pressure switch is installed on the discharge pipe of
the unit and measures the condenser pressure (pressure at the
outlet of the compressor). When the pressure is too high, the
pressure switch is activated. The unit stops.
When activated, it resets automatically, but the controller needs
to be reset manually.
29 Low pressure switch
The low pressure switch is installed on the suction pipe of the
unit and measures the evaporator pressure (pressure at the inlet
of the compressor). When the pressure is too low, the pressure
switch is activated. The unit stops.
30 Discharge thermal protector (general safety device)
The discharge thermal protector is activated when the
temperature of the refrigerant leaving the compressor becomes
too high. The unit stops.
31 Flow switch
The flow switch measures the flow in the water circuit. In case
the flow does not reach the minimum allowed water flow, the unit
will be shut down.
32 Safety valve (only EUWYP, EUWYB)
The safety valve prevents water pressure from exceeding 3 bar.
It protects the tank against burst. Activation of this safety has no
influence on the operation of the unit.
33 Sensor for outlet water temperature
The outlet water temperature sensor measures the temperature
of the water at the evaporator outlet. The protection device shuts
down the unit when the temperature of the chilled water
becomes too low in order to prevent freezing of the water during
operation.
When water temperature becomes back to normal, the protector
resets automatically, but the controller needs to be reset
manually.
34 Freeze protection (optional)
Heaters protect the chiller water system against freezing.
ELECTRICAL SPECIFICATIONS
Main components (See figure 2) ( only for 16~24 Hp units)
Refer to the wiring diagram supplied with the unit.
1 Power supply intake (L1, L2, L3, N, PE)
The power cables from the local supply panel can be inserted in
the unit through this foreseen entrance.
2 Main switch (S12M)
Power to unit can be disconnected by means of this switch.
3 Switch for pump (S21P)
Pump can be switched between automatically (steered by
controller) or manually on (for servicing purpose) by means of
this switch.
4 Digital controller (A1P)
Controls the functioning of the unit.
5 I/O PCB (A2P) (input/output)
The I/O PCB (A2P) is used to connect all internal wiring and
field wiring. It includes some control and safety functions as well.
6 Softstarter (A5P) (possible optional for 5~12 Hp only)
The softstarter reduces the starting current of the compressor.
7 Auxiliary by-pass relay
The relay bridges the high-pressure switch for defrost operation
when the unit is not in defrost operation.
Safety devices (See figure 2) ( only for 16~24 Hp units)
5 I/O PCB (A2P) (input/output)
The I/O PCB (A2P) contains a reverse phase protector.
The reverse phase protector detects if the 3 phases of the power
supply are connected correctly. If a phase is not connected or if
2 phases are inverted, the unit can not start up.
8 Fan motor thermal protector (Q11F, Q12F, Q21F, Q22F)
The fan motors are equipped with a thermal protector. The
protectors are activated when the temperature becomes too
high. When temperature returns to normal, the protector resets
automatically.
9 Overcurrent relay for compressor (K4S, K5S)
The overcurrent relay protects the compressor motor in case of
overload, phase failure or too low voltage. The relay is factory
set and may not be adjusted. When activated, the overcurrent
relay has to be reset in the switch box and the controller needs
to be reset manually.
10 Overcurrent relay for pump (K6S)
The overcurrent relay protects the pump motor in case of
overload, phase failure or too low voltage. The relay is factory
set and may not be adjusted. When activated, the overcurrent
relay has to be reset in the switch box and the controller needs
to be reset manually.
11 Fuse for control circuit (F1U)
The fuse for control circuit protects cables of control circuit and
controller components in case of short circuit.
12 Fuse for control circuit (F4)
The fuse for control circuit protects cables of control circuit and
heater(s) for freeze protection in case of short circuit.
13 Fuse for digital controller (F3U)
The fuse protects cables of digital controller and digital controller
in case of short circuit.
Unit (Hp) 5 8 10 12 16 20 24
Power circuit
• Phase 3N~
•Frequency
(Hz)
50
•Voltage
(V)
400
•Voltage tolerance
(%)
±10
• Recommended fuses
EUWYN (A)
20 25 25 32 40 50 63
EUWYP+B (A)
20 25 32 40 50 50 63
Bekijk gratis de handleiding van Daikin EUWY-KBZW1, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EUWY-KBZW1 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 4504 MB |
