Biral AD 401 [32/92] Settings

Biral AD 401 [32/92] Settings
Danger of burns!
At high media temperatures the pump
can become so hot that only the control keys
can be touched.
32
english
7. Settings
A) Control keyboard
B) Company nameplate
A1) Control button
for setting type of regulation and display (LED)
see section 7.1
A2) Control keys for setting (delivery head)
with illuminated symbols (LED) to indicate delivery head
and flowrate
Refer to 7.2
A3) Illuminated symbol fault, external operation (Ext)
Refer to 7.2 and 7.3
Regulation cycle
Automatic minimum speed
If the initial temperature in the system decreases
by 10 to 15 °C, the pump output is reduced to (min )
after approx. 1 - 2 h.
If the initial temperature rises by 10°C, changeover is
made immediately to regulated operation.
LED lit: preselected
LED flashing: pump is in minimum speed condition
Automatic minimum speed do not use
with wood heaters, gas heaters, water heaters,
storage charging, district heating, heat pumps,
air-conditioning systems, etc.
Aut.
Attention
7.1 Setting type of control (A1)
Control key
Controlled operation: Constant pressure (cp)
Suggested for the following equipment:
Dual-pipe systems with thermal valves and
Feed height <2m
Natural circulation (formerly gravity heating)
with very low pressure loss
Primary circulation pumps in systems
with low pressure loss
Floor heating with thermostatic valves
Single-pipe heating
Uncontrolled operation: Constant speed (cs)
The operating point can be optimally adjusted
by altering the speed.
Suggested for systems with constant volume flow:
Air conditioning units, heat pumps, boiler feed pumps, etc.
Controlled operation: Proportional pressure (pp)
Suggested for the following equipment:
Dual pipe systems with thermal valves and
long stretches of pipe
valves with a large working area
high pressure loss
Primary circuit pumps with high pressure loss
960942_01
A
B
A2
A1
A3
LED 1
LED 2

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