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8 Configuration
Installer reference guide
61
EWAQ+0 EK(2)CB
EKMB9W1
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492901-1 – 2017.06
INFORMATION
If glycol is present in the system ([E‑0D] set to "1") and a
flow abnormality occurs, then [F‑09] will have NO effect,
and the pump will continue operation (intervals of 20
minutes ON – 4 minutes OFF).
Pump speed limitation
Pump speed limitation [9‑0D] defines the maximum pump speed. In
normal conditions, the default setting should NOT be modified. The
pump speed limitation will be overruled when the flow rate is in the
range of the minimum flow (error 7H).
#
Code
Description
N/A
[9‑0D]
Pump speed limitation
▪ 0: No limitation.
▪ 1~4: General limitation. There is
limitation
in
all
conditions.
The
required delta T control and comfort
are
NOT
guaranteed.
▪ 5~8 (default: 6): Limitation when no
actuators. When there is no heating/
cooling output, the pump speed
limitation is applicable. When there is
heating/cooling output, the pump
speed is only determined by delta T in
relation to the required capacity. With
this limitation range, delta T is
possible
and
the
comfort
is
guaranteed.
The maximum values depend on the unit type:
[9-0D]=0
[9-0D]=5
a (kPa)
b (l/min)
a (kPa)
b (l/min)
a (kPa)
b (l/min)
a (kPa)
b (l/min)
[9-0D]=6
[9-0D]=7
[9-0D]=8
a (kPa)
b (l/min)
a
External static pressure
b
Water flow rate