Daikin EWAP110MBYNN Operation Manual page 19

A I
NNEX
Thermostat parameters
Inlet water temperature control/Outlet water temperature
control
The figure below shows the thermostat diagram.
c b c
a/2 a/2
Setpoint
The default value and the upper and lower limits of the thermostat
parameters are listed in the table below.
INLET CONTROL
Step difference - a
(K)
Step difference - b
(K)
Steplength - c
(K)
Loadup timer
(sec)
Loaddown timer
(sec)
Setpoint
(°C)
(a) can only be modified in the service menu
OUTLET CONTROL
Step difference - a
(K)
Step difference - b
(K)
Steplength - c
(K)
Loadup timer
(sec)
Loaddown timer
(sec)
Setpoint
(°C)
(a) can only be modified in the service menu
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.
EWAP110~340MBYNN
Packaged air-cooled water chillers
4PW22677-1
Fast load up
Slow load up
No action
Slow load down
Fast load down
c b c
Default value Lower limit Upper limit
(a)
0.8 –
(a)
0.5 –
(a)
0.2 –
48 12
24 12
12.0 7.0
Default value Lower limit Upper limit
(a)
0.8 –
(a)
0.5 –
(a)
0.2 –
12 12
12 12
7.0 4.0
A II
NNEX
Schedule timer example
MON TUE
1 G1 2
8 G1 9
15 G1 16
22 G1 23
29 H 30
To come to the schedule above following settings have to be made:
–
–
–
All days assigned to the same group will work according to the
300
settings of this group.
300
In this example setting:
23.0
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 (
300
all holiday days will work according to the settings in the holiday
300
group ( ).
16.0
All group settings of groups
following example (settings for group 1):
Cooling inlet setpoint 1
MARCH
WED THU FRI
G1 3 G2 4 G1 5
G1 10 G2 11 G1 12
G1 17 G2 18 G1 19
H 24 H 25 H 26
G1 31 G2
),
),
, , ,
14.0°C
12.0°C
On
Off
6 8 12 13 15
Screen 1
Screen 2
SAT SUN
G1 6 G3 7 G3
G1 13 G3 14 G3
G1 20 G3 21 G3
H 27 H 28 H
and work similar as
18 20
time (h)
Operation manual
18