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Installation and operating manual 

Water level control for overflow collecting tank 

 

 

 

Art. No. 3030000020 (without solenoid valve) 

Function: 

The 

  NR-12-TRS-2  collection  reservoir  control  system  is  a  technically  high-quality  product  which  can  only 

correctly fulfil its function if it has been connected and assembled in accordance with the instructions and if this 
operating  manual  is  followed.  The 

  NR-12-TRS-2  is  particularly  suitable  for  use  in  swimming  pools  with 

overflow channels. It is constructed with integrated circuitry and consists of: 

  electronic controller 

  submerged electrodes (option) 

The  submerged  electrodes  do  not  cause  any electrolyte formation in the water because they are operated with 

alternating current. The electrode cables can be extended up to 20 m (min. 1.5mm

2

) without requiring electronics 

balancing.  The  electronic  circuitry  has  been  specially  developed  for  overflow  collection  reservoirs.  Wave 

movements  do  not  cause  direct  switching  processes  due  to  special  circuitry  in  order  to  avoid  switching  cycles 

which may be too short. 

The submerged electrodes are operated using non-hazardous safety low voltage. The controller itself has been 

designed to comply with the currently applicable German VDE and CE regulations. 

Specifications: 

Control system:

 

 

Dimensions: 

220mm x 219mm x 100mm 

Operational voltage: 

230V/50Hz 

Control system power consumption: 

ca. 7VA 

Switching capacity: 

max. 1.1kW (AC3)

*

 

Protection class: 

IP 40 

Submerged electrodes: 

 

Dimensions: 

ø24mm x 134mm 

Cable length: 

3m 

Operational voltage: 

12V 

*

 

See also connection plan.

 

Installation

The  controller  must  be  installed  in  accordance  with  its  protection  class. 

Before  opening  the  housing,  the 

device must be switched voltage-free using a multi-pole main switch with a contact opening distance of 

at  least  3  mm.  This  main  switch  must  be  integrated  in  the  on-site  installation.  It  is  imperative  that  you 

observe the throughflow direction (arrow direction) indicated on the solenoid valve. 

Use in open-air pools: 

Depending on the swimming pool design, it is possible that rainwater raises the water level in open-air pools and 

activates  the  "forced  switching"  function.  If  this  operating  behaviour  is  not  required,  "forced  switching  ON" 

(terminal 8) can be disconnected.  

Summary of Contents for NR-12-TRS-2

Page 1: ...witching cycles which may be too short The submerged electrodes are operated using non hazardous safety low voltage The controller itself has been designed to comply with the currently applicable German VDE and CE regulations Specifications Control system Dimensions 220mm x 219mm x 100mm Operational voltage 230V 50Hz Control system power consumption ca 7VA Switching capacity max 1 1kW AC3 Protecti...

Page 2: ...ced switching OPEN Dry run protection pump OFF In normal operation the water level varies between the solenoid valve CLOSED and solenoid valve OPEN The height difference is dependent on individual conditions A minimum of 5 cm should be ensured to achieve sufficient sensing distance Electrical power supply The electrical power supply may only be installed by an approved specialist electrician The f...

Page 3: ...the electrodes the solenoid valve closes freshwater inflow off b Filter pump dry run protection If the water level sinks to below the dry run protection pump OFF submerged electrode due to water losses in the collection reservoir e g due to backflushing the collection reservoir control system switches the filter pump off so that it is not damaged by dry running As soon as the water level rises to ...

Page 4: ...ing system K4 is activated if necessary see DIP 4 DIP 2 OFF Dry run protection works without time limitation When the water level sinks below the dry run protection electrode the pump K3 is switched off It is only switched on again once the water level has reached minimum operating level Dry run protection time limitation ON Dry run protection works with without time limitation When the water leve...

Page 5: ...e set using trimmer 2 0 5 60 minutes the pump is switched off and the error message K4 is switched on DIP 4 Group error message OFF Relay K4 is used for group error messaging It is switched on if the dry run protection activates the solenoid valve time limitation activates see DIP 2 the forced switching time limitation activates see DIP 3 inadmissible measured values are detected in the electrodes...

Page 6: ...ble troubleshooting Caution The service terminal may only be plugged in or unplugged when the control system is switched off Zwg Max Min TRS MV TRS Zwg K4 360s OFF 600s Samm Forced switching Maximum operating level Minimum operating level Dry run protection Water level display Solenoid valve time limitation Dry run protection time limitation Forced switching time limitation Use of contact K4 group...

Page 7: ...he opposite direction the solenoid valve may be damaged The preferred installation location is solenoid vertical on top In this position the wear and contamination risk is lowest Electrical connection The electrical connection may only be carried out by an authorised electrician taking into account the applicable regulations The protective earth connection is essential The junction box may be inse...

Page 8: ...Operating manual NR 12 TRS 2 Page 8 ...

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