Daikin EWYT560B-XRA2 [54/75] Ref 3 units with the reduced noise configuration can increase the sound level in this area

Daikin EWYT235B-SSA2 [54/75] Ref 3 units with the reduced noise configuration can increase the sound level in this area
INSTALLATION NOTES
54 | 75
OAT
Outside ambient temperature
ELWT
Evaporator leaving water temperature
Ref 1
Operation with ELWT <4 ° C requires option 08 (BRINE) and glycol
Ref 2
Operation at ambient temperatures <10 ° C requires option 99A (fan speed modulation)
or option 42 (Speedtroll)
Ref 3
Units with the "Reduced noise" configuration can increase the sound level in this area
Ref 4
Partial load operation; operation at full load may require option 142A-B-C (High
ambient temperature kit)
The above graphic represents a guideline about the operating limits of the range. Please refer to the
latest Unit Selection Software (CSS) for real operating limits working conditions for each size.
Water heat exchanger - maximum/maximum water Δt
The minimum and maximum allowed Δt at full load conditioins are respectively 2,5 °C and 10°C. Contact factory
in case lower or higher Δt are required. Minimum and maximum Water Side Heat Exchanger flows are to be
respected withing the Δt range above.
Water flow
The following tables indicate the minimum and maximum water flow allowed for each model.
The minimum flow indicated correspond to the minimum flow allowed at minimum load for the unit. It is not
intended as minimum flow allowed for unit full load operation.
For minimum flow allowed (maximum deltaT) in full load operation refer to Selection Software.
The below values are referred to pure water (in case of glycol mixture contact factory).
Note: the performances are certified at standard conditions and with the unit operating with the nominal water
flow.
Model
Min Flow [l/s]
Max Flow [l/s]
Model
Min Flow [l/s]
EWYT085B-S-A1
2.5
12.5
EWYT085B-X-A1
3.6
EWYT105B-S-A1
2.5
12.5
EWYT115B-X-A1
3.6
EWYT135B-S-A1
2.5
12.5
EWYT135B-X-A1
3.6
EWYT175B-S-A1
2.5
12.5
EWYT175B-X-A1
5.0
EWYT215B-S-A1
3.6
17.0
EWYT215B-X-A1
5.0
EWYT205B-S-A2
3.6
17.0
EWYT215B-X-A2
8.9
EWYT235B-S-A2
3.6
17.0
EWYT235B-X-A2
8.9
EWYT255B-S-A2
4.4
19.9
EWYT265B-X-A2
8.9
EWYT300B-S-A2
4.4
19.9
EWYT310B-X-A2
8.9
EWYT340B-S-A2
5.6
26.4
EWYT350B-X-A2
8.9
EWYT390B-S-A2
5.6
26.4
EWYT400B-X-A2
8.9
EWYT430B-S-A2
5.6
26.4
EWYT440B-X-A2
11.2
EWYT490B-S-A2
7.0
31.2
EWYT500B-X-A2
11.2
EWYT540B-S-A2
7.0
31.2
EWYT560B-X-A2
11.9
EWYT590B-S-A2
8.8
41.2
EWYT600B-X-A2
11.9
EWYT630B-S-A2
8.8
41.2
EWYT630B-X-A2
11.9
EWYT650B-X-A2
11.9
53.7
Minimum glycol percentage for low air ambient temperature to prevent freezing
of the hydraulic circuit
AMBIENT T [°C]
-3
-8
-15
-20
AMBIENT T [°C]
-3
-8
-15
-20
ETHYLENE GLYCOL
10%
20%
30%
40%
PROPYLENE GLYCOL
10%
20%
30%
40%
The presence of glycol in the water system will affect unit performances. Refer to the selection software for
details. All machine protection systems, such as antifreeze and low-pressure protection will need to be set in
accordance to the type and percentage of the glycol and plant requirements.

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