Daikin EWYA004D2V3P Installer's Reference Manual page 163

EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09
Configuration
The backup heater can be configured in different ways. It can be chosen to have a
1-step only backup heater or a backup heater with 2 steps. If 2 steps, the capacity
of the second step depends on this setting. It can also be chosen to have a higher
capacity of the second step in emergency.
# Code
[9.3.3] [4‑0A]
INFORMATION
Settings [9.3.3] and [9.3.5] are linked. Changing one setting influences the other. If
you change one, check if the other is still as expected.
INFORMATION
During normal operation, the capacity of the second step of the backup heater at
nominal voltage is equal to [6‑03]+[6‑04].
INFORMATION
If [4‑0A]=3 and emergency mode is active, the power usage of the backup heater is
maximal and equal to 2×[6‑03]+[6‑04].
Capacity step 1
# Code
[9.3.4] [6‑03]
Additional capacity step 2
# Code
[9.3.5] [6‑04]
Equilibrium
# Code
[9.3.6] [5-00]
[9.3.7] [5-01]
Description
▪ 0: Relay 1
▪ 1: Relay 1 / Relay 1+2
▪ 2: Relay 1 / Relay 2
▪ 3: Relay 1 / Relay 2 Emergency Relay 1+2
Description
▪ The capacity of the first step of the backup
heater at nominal voltage.
Description
▪ The capacity difference between the second
and first step of the backup heater at nominal
voltage. Nominal value depends on backup
heater configuration.
Description
Equilibrium: Deactivate backup heater (or
external backup heat source in case of a bivalent
system) above the equilibrium temperature for
space heating?
▪ 0: No
▪ 1: Yes
Equilibrium temperature: Outdoor
temperature below which operation of the
backup heater (or external backup heat source in
case of a bivalent system) is allowed.
Range: –15°C~35°C
11 Configuration
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Installer reference guide
163