Daikin EWAT_B User Manual

EWAT_B
Operating Manual
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5
4 < < 7.2
5
7.2 < < 10.4
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10.4 < < 13.6
3
13.6 < < 16.8
2
16.8 < < 20.0
1
6
4 < < 6.7
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6.7 < < 9.3
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9.3 < < 12
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12 < < 14.7
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14.7 < < 17.3
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17.3 < < 20
1
All info about this function are reported in the Main Menu  Commission Unit  Configuration  Options  Demand
Limit page.
4.10.2 Setpoint Reset
The “Setpoint Reset” function is able to override the chilled water temperature active setpoint when certain circumstances
occur. The aim of this function is to reduce the unit energy consumption whilst maintaining the same comfort level. To this
purpose, three different control strategies are available:
 Setpoint Reset by Outside Air Temperature (OAT)
 Setpoint Reset by an external signal (4-20mA)
 Setpoint Reset by Evaporator ΔT (EWT)
In order to set the desired setpoint-reset strategy, go to Main Menu  Commission Unit  Configuration  Options
and modify the Setpoint Reset parameter, according to the following table:
Parameter
Range
Description
LWT Reset
No
Setpoint reset not enabled
4-20mA
Setpoint reset enabled by an external signal between 4 and 20mA
DT
Setpoint reset enabled by Evaporator Water Temperature
OAT
Setpoint reset enabled by Outside Air Temperature
Each strategy needs to be configured (although a default configuration is available) and its parameters can be set
navigating to Main Menu  View/Set Unit  Power Conservation Setpoint Reset.
Note that the parameters corresponding to a specific strategy will be available only once the Setpoint Reset has been set
to a specific value and the UC has been restarted.

Daikin EWAT_B Specifications

General

Brand	Daikin
Model	EWAT_B
Category	Chiller
Language	English