Daikin EWAQ040BAW User Manual

Installation and operation manual
5
EWAQ016~064BAW + EWYQ016~064BAW
Packaged air-cooled water chiller
4PW70082-1C – 2013.07
■ Take care that the components installed in the field piping can
withstand the water pressure (maximum 3 bar + static pressure
of the pump).
-For units with a standard pump installed (EWA/YQ*BAWP),
refer to figure 15
External static pressure= External static pressure
Water flow= Water flow
-For units with an optional high static pump installed
(EWA/YQ*BAWH), refer to figure 16
External static pressure= External static pressure
Water flow= Water flow
-For units without pump (EWA/YQ*BAWN), refer to figure 17
Pressure drop= Pressure drop
Water flow= Water flow
■ The maximum waterpiping temperature is 50°C according to
safety device setting.
■ Always use materials which are compatible with the water used
in the system and with the materials used in the unit.
(The unit piping fittings are made of brass, the plate heat
exchangers are made of stainless steel 316 plates brazed
together with copper and the optional pump housing is made of
cast iron.)
■ Select piping diameter in relation to required water flow and
available external static pressure (ESP) of the pump.
The recommended water piping diameter is:
-for units 016~032: 1-1/4"
-for units 040~064: 2"
■ The minimum required water flow for the unit operation is shown
in the following table.
When the water flow is lower than this minimum value,
eventually flow error A6 will be displayed and the operation of
the unit will be stopped.
3.6. Prepare the electrical wiring work
■ A main switch or other means for disconnection, having a
contact separation in all poles, must be incorporated in
the fixed wiring in accordance with the applicable
legislation.
■ Use only copper wires.
■ All field wiring must be carried out in accordance with the
wiring diagram supplied with the unit and the instructions
given below.
■ Never squeeze bundled cables and be sure that it does
not come in contact with the non-insulated piping and
sharp edges. Be sure no external pressure is applied to
the terminal connections.
■ Power supply wires must be attached securely.
■ If the power supply has a missing or wrong N-phase,
equipment will break down.
■ Be sure to establish an earth. Do not earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earth may cause electrical shock.
■ Be sure to install an earth leakage protector in
accordance with the applicable legislation. Failure to do
so may cause electric shock or fire.
■ Be sure to use a dedicated power circuit, never use a
power supply shared by another appliance.
■ When installing the earth leakage protector, be sure that
it is compatible with the inverter (resistant to high
frequency electric noise) to avoid unnecessary opening
of the earth leakage protector.
■ As this unit is equipped with an inverter, installing a
phase advancing capacitor not only will deteriorate
power factor improvement effect, but also may cause a
capacitor abnormal heating accident due to high-
frequency waves. Therefore, never install a phase
advancing capacitor.
■ Be sure to install the required fuses or circuit breakers.
■ When using residual current operated circuit breakers,
be sure to use a high-speed type 300 mA rated residual
operating current circuit breaker.
■ Never remove a thermistor, sensor, etc., when
connecting power wiring and transmission wiring.
(If operated without thermistor, sensor, etc., the
compressor may break down.)
■ The reversed phase protection detector is designed to
stop the product in the event of an abnormality when the
product is started up. Reversed phase detection is not
performed consequently during normal operation of the
product.
■ If reverse-phase detection occurs replace 2 of the 3
phases (L1, L2, and L3). (Refer to "5.5.2. Error codes" on
page 23).
■ If there exists the possibility of reversed phase after a
momentary black out and the power goes on and off
while the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed
phase can break the compressor and other parts.
WARNING
■ For correct operation of the system, a regulating
valve must be installed in the water system. The
regulating valve is to be used to regulate the
water flow in the system (field supply).
■ Selecting a flow outside the curves can cause
malfunction or damage to the unit. Also refer to
the table "Technical specifications" on page 24.
EWA/YQ016 ~ 025 = 21 l/min
EWA/YQ032 = 32 l/min
EWA/YQ040 + 050 = 42 l/min
EWA/YQ064 = 64 l/min
NOTICE
It is strongly recommended to install an additional filter on
the water circuit. Especially to remove metallic particles
from the field water piping, it is advised to use a magnetic
or cyclone filter which can remove small particles. Small
particles can damage the unit and will not be removed by
the standard filter of the unit.
WARNING: Electrical installation
All field wiring and components must be installed by an
installer and must comply with the applicable legislation
DANGER: ELECTRICAL SHOCK
See "2. Precautions for installation" on page 3.
WARNING
4PWEN70082-1C.book Page 5 Wednesday, September 25, 2013 7:31 AM

Daikin EWAQ040BAW Specifications

General

Brand	Daikin
Model	EWAQ040BAW
Category	Chiller
Language	English