11 | Configuration
Installer reference guide
165
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Additional capacity step 2
# Code Description
[9.3.5] [6‑04] ▪ The capacity difference between the second
and first step of the backup heater at nominal
voltage. Nominal value depends on backup
heater configuration.
Equilibrium
# Code Description
[9.3.6] [5-00] Equilibrium: Is backup heater operation
allowed above equilibrium temperature during
space heating operation?
▪ 1: NOT allowed
▪ 0: Allowed
[9.3.7] [5-01] Equilibrium temperature: Outdoor
temperature below which operation of the
backup heater is allowed.
Range: –15°C~35°C
INFORMATION
Above 10°C ambient temperature, the heat pump will operate until 55°C. Configuring
a higher setpoint with an ambient temperature that is higher than the set
equilibrium temperature will prevent the backup heater from assisting. The backup
heater will ONLY assist if you increase the equilibrium temperature [5‑01] to the
required ambient temperature you need to reach the higher setpoint.
Operation
# Code Description
[9.3.8] [4‑00] Backup heater operation:
▪ 0: Restricted
▪ 1: Allowed
▪ 2: Only DHW: Do NOT use.
Emergency
Emergency
When the heat pump fails to operate, the optional external backup heater kit can
serve as an emergency heater. It then takes over the heat load either automatically
or by manual interaction.
▪ When Emergency is set to Automatic (or auto SH normal/DHW off)
(1)
and
a heat pump failure occurs, the backup heater automatically takes over the heat
load.
▪ When Emergency is set to Manual and a heat pump failure occurs, the space
heating stops.
To manually recover it via the user interface, go to the Malfunctioning main
menu screen and confirm whether the backup heater can take over the heat load
or not.
(1)
auto SH normal/DHW off has the same effect as Automatic, but should NOT be used because there is no domestic
hot water.
To Next Page
Loading...
