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Daikin EUWA15HDW15 [17/18] Disposal requirements
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16
ANNEX I
Thermostat parameters
The figure below shows the thermostat parameters.
The default value and the upper and lower limits of the thermostat
parameters, are listed in the table below.
Default value Lower limit Upper limit
Steplength - a 1.5K 0.4K 2.0K
Step difference - b 0.5K 0.2K 0.8K
Load-up time 180 sec 15 sec 300 sec
Load-down time 20 sec 15 sec 300 sec
Cooling setpoint - c 12°C7.0°C (*) 25.0°C
(*) For glycol units, the lower limit of the cooling temperature setpoint can be adapted in
the factory to 5°C, 3°C, -2°C, -7°C.
10°C
c
ab
15°C 25°C 30°C
Step 0
Step 1
Step 2
Step 3
MAINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried
out at regular intervals.
If the unit is used for air conditioning application, the described
checks should be executed at least once a year. In case the unit is
used for other applications, the checks should be executed every 4
months.
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply panel,
remove the fuses or open the protection devices of the unit.
Do never clean the unit with water under pressure.
Maintenance activities
The wiring and power supply must be checked by a
licensed electrician.
1. Air heat exchanger
Remove dust and any other contaminant from the coil fins using
a brush and a blower. Blow from the inside of the unit. Take
care not to bend or damage the fins.
2. Field wiring and power supply
■ Check the power supply voltage on the local supply panel.
The voltage should correspond to the voltage marked on the
identification label of the unit.
■ Check the connections and make sure they are properly
fixed.
■ Check the proper operation of the circuit breaker and the
earth leak detector provided on the local supply panel.
3. Internal wiring of the unit
Visually check the switch boxes on loose connections
(terminals and components). Make sure that the electrical
components are not damaged or loose.
4. Earth connection
Make sure that the earth wires are still connected properly and
that the earth terminals are tightened.
5. Refrigerant circuit
■ Check for leaks inside the unit. In case a leak is detected,
call your local Daikin dealer.
■ Check the working pressure of the unit. Refer to paragraph
"Switching the unit on" (2).
6. Compressor
■ Check on oil leaks. If there is an oil leak, call your local
Daikin dealer.
■ Check for abnormal noises and vibrations. If the compressor
is damaged, call your local Daikin dealer.
7. Fan motor
■ Clean the cooling ribs of the motor.
■ Check on abnormal noises. If the fan or motor are damaged,
call your local Daikin dealer.
8. Water supply
■ Check if the water connection is still well fixed.
■ Check the water quality (refer to the installation manual of
the unit for specifications of the water quality).
Disposal requirements
Dismantling of the unit, treatment of the refrigerant, oil and eventual
other parts, should be done in accordance with the relevant local
and national regulations.
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 1 2
- Ntroduction 2
- Ontents 2
- Operation manual 2
- Technical specifications 1 2
- Escription 3
- Euwa20 3
- Euwa25 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Measuring devices 5
- Checks before initial start up 6
- Efore operation 6
- General recommendations 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- Peration 7
- Working with the unit 7
- Adjusting the temperature setpoint 8
- Consulting actual operational information 8
- Enter the readout menu using the a key 8
- Enter the setpoints menu using the z key 8
- If the manual control mode is selected refer to the user settings menu none of the above mentioned setpoints will be active 8
- If the remote on off control parameter is set to no 8
- If the remote on off control parameter is set to yes 8
- If the unit does not start after a few minutes consult the readout menu which gives the status of the different circuits refer to paragraph consulting actual operational information also refer to the chapter trouble shooting 8
- Press j to save the adjusted temperature setpoint or press the z key to cancel the modification 8
- Press the f key on the controller 8
- Press the f key on the controller or switch the unit off using the remote on off switch 8
- Press the h key to adjust the temperature setting 8
- Press the w key to return successively to the second and the first screen of the readout menu 8
- Press the x key to enter the second screen of the readout menu 8
- Press the x key to enter the third screen of the readout menu 8
- Select the setpoint to be adjusted using the j key 8
- Setp cool 1 inlet water temperature cooling setpoint 1 8
- Setp cool 2 inlet water temperature cooling setpoint 2 8
- Switching the unit off 8
- The pressures measured will vary between a maximum and minimum value depending on the water and outdoor temperatures at the moment of measurement 8
- The selection between setpoint 1 and 2 is done by a remote dual setpoint switch to be installed by the customer the actual active setpoint can be consulted in the readout menu 8
- The unit provides definition and selection of two independent temperature setpoints for cooling operation 8
- To adjust a setpoint proceed as follows 8
- To adjust other setpoints repeat from instruction 2 onwards 8
- Advanced features of the digital controller 9
- History menu t t t t t 10
- Info menu y y y y y 10
- Input output menu u u u u u 10
- Safeties menu g g g g g 10
- The history menu contains all the information concerning the latest shutdowns 10
- The input output menu gives the status of all the digital inputs and the relay outputs of the unit 10
- The safeties menu provides useful information for trouble shooting purposes 10
- Timers menu r r r r r 10
- To calibrate the sensor for inlet water temperature measurement 10
- To change the user password 10
- To check the actual value of the compressor timers 10
- To check the actual value of the general software timers 10
- To check the status of circuit 1 at activation of one of the circuits safeties 10
- To check the status of circuit 2 at activation of one of the circuits safeties 10
- To check the status of circuit 3 at activation of one of the circuits safeties 10
- To check the status of the alarm the operation and the pump voltage free contacts 10
- To check the status of the circuit safeties 10
- To check the status of the evaporator heater however the evaporator heater option is not offered by daikin 10
- To check the status of the fanspeed relays 10
- To check the status of the flowswitch 10
- To check the status of the low pressure bypass switches 10
- To check the status of the remote setpoint selection switch the remote on off switch and the reverse phase protector 10
- To check whether or not the different compressors are activated 10
- To consult additional information about the unit such as the unit name the refrigerant used and the manufacturing number 10
- To consult information about the controller s software version 10
- To consult information about the number of circuit 1 shutdowns and the circuit status at the most recent shutdown 10
- To consult information about the number of circuit 2 shutdowns and the circuit status at the most recent shutdown 10
- To consult information about the number of circuit 3 shutdowns and the circuit status at the most recent shutdown 10
- To consult information about the number of shutdowns the unit safety which caused the most recent shutdown and the unit status at this shutdown 10
- To consult information about the unit safety which caused the shutdown and to check the unit status at shutdown 10
- To consult the outlet water inlet water and ambient temperature limits 10
- To define whether or not a password is needed to change the temperature setpoint 10
- User password menu q q q q q 10
- When automatic control mode is selected the unit uses default a 2 step thermostat to control the cooling load however the thermostat parameters are not fixed and can be modified via the thermostat settings screen of the user settings menu 11
- Rouble shooting 14
- Aintenance 17
- Disposal requirements 17
- Maintenance activities 17
- Thermostat parameters 17
- Pwen09719 1b 18
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