Daikin Altherma 3 R MT F Series Installer's Reference Manual page 196

11 | Configuration
Installer reference guide
196
Pump limitation
The pump speed limitation for the main zone [9‑0E] and additional zone [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).
In most cases, instead of using [9-0D]/[9-0E], you can prevent flow noises by
performing hydraulic balancing.
# Code
[4.8.1] [9-0E]
[4.8.2] [9-0D]
Possible values:
Value
0 No limitation
1~4 General limitation. There is limitation in all conditions. The
required delta T control and comfort are NOT guaranteed.
▪ 1: 90% pump speed
▪ 2: 80% pump speed
▪ 3: 70% pump speed
▪ 4: 60% pump speed
5~8 Limitation when no actuators. When there is no heating output,
the pump speed limitation is applicable. When there is heating
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.
During sampling operation the pump runs for a short time to
measure the water temperatures, which indicate if operation is
required or not.
▪ 5: 90% pump speed during sampling
▪ 6: 80% pump speed during sampling
▪ 7: 70% pump speed during sampling
▪ 8: 60% pump speed during sampling
The maximum values depend on the unit type:
[9-0D]/[9-0E]=0
a (kPa)
Pump limitation Main zone
Possible values: see below.
Pump limitation Additional zone
Possible values: see below.
Description
[9-0D]/[9-0E]=1/5
a (kPa)
b (l/min)
Description
b (l/min)
ERRA08~12E + ELVZ12S18+23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05