![Daikin EWAP160MBYN [19/22] Inlet water temperature control outlet water temperature control](/img/pdf.png)
Daikin EWAP160MBYN [19/22] Inlet water temperature control outlet water temperature control
![Daikin EWAP160MBYN [19/22] Inlet water temperature control outlet water temperature control](/views2/1657062/page19/bg13.png)
EWAP110~340MBYNN
Packaged air-cooled water chillers
4PW22677-1B
Operation manual
18
ANNEX I
Thermostat parameters
Inlet water temperature control/Outlet water temperature
control
The figure below shows the thermostat diagram.
The default value and the upper and lower limits of the thermostat
parameters are listed in the table below.
■ If the temperature is below the setpoint, the thermostat control
will check every LOADDOWN TIMER.
According to the deviation to the setpoint, no action, slow load
down (=–3%) or fast load down (=–7%) is required.
■ If the temperature is above the setpoint, the thermostat control
will check every LOADUP TIMER.
According to the deviation to the setpoint, no action, slow load
up (=+3%) or fast load up (=+7%) is required.
ANNEX II
Schedule timer example
To come to the schedule above following settings have to be made:
All days assigned to the same group will work according to the
settings of this group.
In this example setting:
■ all Mondays, Tuesdays, Thursdays and Fridays will work
according to the settings in group 1 (
),
■ all Wednesdays will work according to the settings in group 2
(
),
■ all Saturdays and Sundays will work according to the settings in
group 3 (
"
),
■ all holiday days will work according to the settings in the holiday
group (
).
All group settings of groups
,
,
"
,
#
and
work similar as
following example (settings for group 1):
INLET CONTROL Default value Lower limit Upper limit
Step difference - a
(K)
0.8
(a)
(a) can only be modified in the service menu
––
Step difference - b
(K)
0.5
(a)
––
Steplength - c
(K)
0.2
(a)
––
Loadup timer
(sec)
48 12 300
Loaddown timer
(sec)
24 12 300
Setpoint
(°C)
12.0 7.0 23.0
OUTLET CONTROL Default value Lower limit Upper limit
Step difference - a
(K)
0.8
(a)
(a) can only be modified in the service menu
––
Step difference - b
(K)
0.5
(a)
––
Steplength - c
(K)
0.2
(a)
––
Loadup timer
(sec)
12 12 300
Loaddown timer
(sec)
12 12 300
Setpoint
(°C)
7.0 4.0 16.0
c b c c b c
a/2 a/2
Setpoint
Fast load up
Slow load up
No action
Slow load down
Fast load down
MARCH
MON TUE WED THU FRI SAT SUN
1 G1 2 G1 3 G2 4 G1 5 G1 6 G3 7 G3
8 G1 9 G1 10 G2 11 G1 12 G1 13 G3 14 G3
15 G1 16 G1 17 G2 18 G1 19 G1 20 G3 21 G3
22 G1
23 H 24 H 25 H 26 H 27 H 28 H
29 H 30 G1 31 G2
Screen 1
Screen 2
')
"
"
') % %"
%"%" +%"
%%%%% %%%%
%"%%%% %%%%
14.0°C
68 1213 15 18 20
12.0°C
Cooling inlet setpoint 1
On
Off
time (h)
') % %"
%$2%% &%
%$2%% %%&%
"%/2%% #&%
') %# %$
#2%% %%&%
."2%% %%&%
$%2%% %%&%
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 2
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Description 3
- Escription 3
- Important information regarding the refrigerant used 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Before operation 6
- Checks before initial start up 6
- Efore operation 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- General recommendations 7
- Operation 7
- Peration 7
- Working with the unit 7
- Consulting actual operational information 8
- Setting the language 8
- Switching the unit off 8
- Switching the unit on 8
- Switching units on off in a dicn system 8
- Adjusting the temperature setpoint 9
- Resetting the unit 9
- Advanced features of the digital controller 10
- All menus are directly accessible using the corresponding key on the digital controller or through the main menu refer to how to enter a menu on page 6 the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 10
- Depending upon the settings in the user settings menu the setpoints menu can either be entered directly or by means of the user password 10
- Readout menu 10
- Setpoints menu 10
- The usersettings menu protected by the user password allows a full customization of the units 10
- This chapter gives an overview and a brief functional description of the screens provided by the different menus in the following chapter you will find how you can set up and configure the unit using the various menu functions 10
- Timers menu 10
- Usersettings menu 10
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 11
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 11
- History menu 11
- Info menu 11
- Input output menu 11
- Safeties menu 11
- The history menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 11
- The input output menu gives the status of all the digital inputs and the relay outputs of the unit 11
- The safeties menu provides useful information for trouble shooting purposes the following screens contain basic information 11
- To change the user password 11
- To check the capacity mode and feedback 11
- To check the status of the changeable digital inputs note that for a unit in a dicn system the inputs apply to this unit it will be the remote input on the master unit however that will be determining for the operation of the unit 11
- To check the status of the changeable relay output 11
- To check the status of the discharge thermal protector and the compressor thermal protector 11
- To check the status of the fanspeed relays 11
- To check the status of the high pressure switch the reverse phase protector and the overcurrent relay 11
- To check the status of the power relays 11
- To check the status of the pump the alarm and the evaporator heater voltage free contacts 11
- To check the time and control mode at the moment of the unit shutdown 11
- To check whether or not the emergency stop device is active and if there is any waterflow to the evaporator 11
- To check which was the status of the compressors at the moment of shutdown 11
- To check which were the evaporator and condenser inlet water temperature and the evaporator outlet water temperature 11
- To check which were the pressures of the circuit at the moment of shutdown 11
- To check which were the total amount of running hours of the compressor and the ambient temperature at the moment of shutdown 11
- To consult additional information about the unit such as the unit type and the refrigerant used 11
- To consult information about the circuit safety which caused the shutdown 11
- To consult information about the controller s software version 11
- To consult information about the dual pump which caused the shutdown 11
- To consult information about the network safety which caused the shutdown 11
- To consult information about the pcb 11
- To consult information about the unit safety which caused the shutdown 11
- To consult time and date information 11
- User password menu 11
- Defining and activating the control mode 12
- Defining the capacity limitation settings 12
- Defining the pump control settings 12
- Defining the schedule timer 12
- Defining the thermostat settings 12
- Entering the user settings menu 12
- Network menu 12
- Defining dual evaporator pump control 13
- Defining free cooling 13
- Defining the display settings 13
- Defining the network settings 13
- Defining the floating setpoint settings 13
- Activating or deactivating the setpoints password 14
- Checking the actual value of the software timers 14
- Defining bms control 14
- Checking the safety info and the unit status after a reset 15
- Checking the status of the inputs and outputs 15
- Consulting additional unit information 15
- Listing activated safeties and checking the unit status 15
- Changing the user password 16
- Roubleshooting 16
- Troubleshooting 16
- Aintenance 18
- Disposal requirements 18
- Maintenance 18
- Maintenance activities 18
- Inlet water temperature control outlet water temperature control 19
- Schedule timer example 19
- Thermostat parameters 19
- Floating setpoint working 20
- Free cooling on ambient temperature 20
- Free cooling on difference between inlet water evaporator temperature and ambient temperature 20
- Free cooling working 20
- Oftware structure 21
- Q q q q q 21
- Pw22677 1b 22
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