Water Charge, Flow And Quality; Water Piping Insulation; Refrigerant Piping Insulation; Installation Of The Condenser Inlet Temperature Sensor - Daikin EWLQ014KBW1N Manuel D'installation

W ,
ATER CHARGE FLOW AND QUALITY
To assure proper operation of the unit a minimum water volume is
required in the system and the water flow through the evaporator
must be within the operation range as specified in the table below.
Minimum
water volume (l)
EWLQ014
62
EWLQ025 134
EWLQ033
155
EWLQ049 205
EWLQ064
311
The water pressure should not exceed the maximum
working pressure of 10 bar.
NOTE Provide adequate safeguards in the water circuit to
make sure that the water pressure will never exceed
the maximum allowable working pressure.
W
ATER PIPING INSULATION
The complete water circuit, inclusive all piping, must be insulated to
prevent condensation and reduction of the cooling capacity.
Protect the water piping against water freezing during winter period
(e.g. by using a glycol solution or heatertape).
R
EFRIGERANT PIPING INSULATION
To prevent burning injuries by accidental touching the hot (max
135°C) discharge pipe, it must be insulated thoroughly.
A minimum of insulation to protect the liquid pipe from damage is
advisable.
I
NSTALLATION OF THE CONDENSER INLET
TEMPERATURE SENSOR
For condenser water inlet control it is possible to enlarge the provided
water sensor cable for a total length of 100 m. It gives the opportunity
to place the water sensor near to the remote watercooled condenser
in order to have a reliable condenser water inlet measurment.

Connecting sensors and power supply

Sensors can be located up to 100 meters distance away from the
controller provided that you use cables with Ø1 mm
immunity against noises we recommend using shielded cables (connect
just one end of the shielding to the earth of the electrical panel).
1 2 3
1 5 6 2
1 Switch box (with connector X62A on I/O PCB)
2 Sensor cable (length ±1 m)
3 Sensor
4 Remote watercooled condenser
5 Cable
6 Interconnection (IP67)
Installation manual
6
Minimum Maximum
water flow water flow
75 l/min
31 l/min
123 l/min
53 l/min
186 l/min
76 l/min
101 l/min 247 l/min
373 l/min
152 l/min
2
min. To improve
3 4
F
IELD WIRING
All field wiring and components must be installed by a
licensed electrician and must comply with relevant
European and national regulations.
The field wiring must be carried out in accordance with the
wiring diagram supplied with the unit and the instructions
given below.
Be sure to use a dedicated power circuit. Never use a
power supply shared by another appliance.

Parts table

F1,2,3 .................... Main fuses for the unit
H3P........................ Indication lamp alarm
H4P,H5P ................ Indication lamp operation compressor circuit 1,
circuit 2
K1F,K2F ................. fancontactor
PE.......................... Main earth terminal
S7S........................ Switch for remote cooling/heating change-over
valve or dual setpoint
S9S........................ Switch for remote start/stop or dual setpoint

- - - ......................... Field wiring

Power circuit and cable requirements

1 The electrical power supply to the unit must be arranged so that
it can be switched on or off independently of the electrical supply
to other items of the plant and equipment in general.
2 A power circuit must be provided for connection of the unit. This
circuit must be protected with the required safety devices, i.e. a
circuit breaker, a slow blow fuse on each phase and an earth
leak detector. Recommended fuses are mentioned on the wiring
diagram supplied with the unit.
Switch off the main isolator switch before making any
connections (switch off the circuit breaker, remove or
switch off the fuses).
Connection of the water-cooled water chiller power
supply
1 Using the appropriate cable, connect the power circuit to the N,
L1, L2 and L3 terminals of the unit. (cable section 2.5~10 mm
2 Connect the earth conductor (yellow/green) to the earthing
terminal PE.
EWLQ014~064KBW1N
Condenserless water-cooled water chillers
D­EIMHP01108­17EU
2
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