District Heating Leakage Protection System UMS-F

System UMS-F Application:
Domestic and commercial DH installations

  • Flow Meters Flow and Return
  • UMS-F Control Unit
  • Cut-Off Valves
  • Check valve for Return pipe
Ill.: system UMS-F2,5

Monitoring Functions

Volume Leak:
Volume leak alarm is given if the volume flow difference exceeds the set threshold for two consecutive measuring periods each max. 210 seconds.

The patented ALOHA® mechanism enables the passage of air pockets through the flow meters without causing false alarms, and without altering the basic sensitivity of the system.
Thus system UMS-F offers optimum reliability.

Seepage: (OptiTight®)
The patented OptiTight® mechanism employs individual control of the cut-off valves to test the installation tightness one or more times daily, whereby even minute seepage may be detected.

System Error:
When a valve is closed -  by tightness test or alarm -  the system checks its tightness. If a component fails, a System Error Alarm ensues.
Failure of any internal voltage supply causes a System Error Alarm. No cut-off results from System Error Alarm.


Alarm Functions

On leak errors, UMS-F will cut off the installation, issue visble and audible alarms, and activate the alarm relay.
System error is reported via the alarm relay, and visibly and audibly when possible. Valve error is reported visibly.


Controls and Indicators:
Status-, data- and alarm indicators, buzzer. Key for alarm mute and acknowledge. Two digital control inputs.

Leak Monitor Volume:
Measuring period 210 sec.; truncated when threshold exceeded; alarm on successive errors.
Threshold adjustable 0.5-1-2-5%qp + 1-2-5-10%qact.

Execution: 0-4x/day, or by control input.
Start at 02:00 + 24 / 2*12 / 3*8 or 4*6 hours.
Threshold 20-40-60-80%qp, duration 5-10-20-40m.

Mains Connection:
230V 50Hz L/N/PE via key switch.
Power consumption max 20W.


Liquid sensor attachment: (Opt. V)
Accepts two liquid sensors type LS-X, for select protection of sensitive areas with optional cut-off.

By attachment to AERS system UMS-F may text mobile phone(s) on alarm.

Outdoor Temperature Sensor
Suppresses OptiTight® tightness test in cold weather, protecting unsecured calorifiers.

Drain valve:
Employed in critical applications for draining the heating system installation on leakage alarm.

Operating Pressure Monitor: (Opt. P)
Cuts off installation when operating pressure fails. Minimizes media loss and restart difficulty.


Guidelines for Installation

EAN/UPC ordering codes here

Download System UMS-F data sheet in pdf-format