Settings; Setting Type Of Control (A1); Setting The Delivery Head (A2); Display Of The Current Flow Volume - Biral A 12 Instrucciones De Instalación Y Funcionamiento

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B
LED 1
A2
A1
Regulation cycle
english

7. Settings

A) Control keyboard
B) Company nameplate
A
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
LED 2
A3) Illuminated symbol fault, external operation (Ext)
A3
Refer to 7.2 and 7.3

7.1 Setting type of control (A1)

Control key
Controlled operation: Proportional pressure (pp)
Suggested for the following equipment:
– Dual pipe systems with thermal valves and
– Primary circuit pumps with high pressure loss
Controlled operation: Constant pressure (cp)
Suggested for the following equipment:
– Dual-pipe systems with thermal valves and
– with very low pressure loss
– Primary circulation pumps in systems
– 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.
Danger of burns!
At high media temperatures the pump
can become so hot that only the control keys
can be touched.
– long stretches of pipe
– valves with a large working area
– high pressure loss
– Feed height < 2m
– Natural circulation (formerly gravity heating)
with low pressure loss