This form is printed, filled and used as a tender document enclosure. Employ your browser's 'Print Preview' and 'Scale' functions to fit the form into one sheet of paper. Ensure no baloon help is visible before starting the printout.
Verification of installation tightness under asymmetric cut-off. Since this executes free of masking from the consumption flow, it can detect very small leaks.
Peak flow resulting from the building's heating demand at the provided operating conditions on the coldest day of the year. When nighttime temperature reduction is employed, add 15% to this value.
The maximum amount of available differential pressure that the leakage protection system may absorb.
When a modem is attached, the WLP can be programmed to perform dial-out on alarm to up to four different phone numbers or SMS-pool (in Denmark), while DanTaet can provide swift assistance and troubleshooting by remote control of the WLP.
Whenever a building contains more than one WLP computers, these may be connected in a DCN-network, permitting any computer to utilize an attached modem, and permitting remote control of all WLPs.
The flow meters of the WLP system can be employed as secondary meters by the BMS, saving space and reducing acquisition and installation costs. The WLP can reproduce the meter impulses directly, or supply an impulse per volume unit adjustable 1-1000 liters.
The alarm outputs of the WLP system may be used to indicate system status on the BMS or other technical equipment.
The open BMS protocol of the WLP systems permits data communication with and a degree of remote control from the BMS.
When equipped with Option E the WLP-2 can issue an impulse per consumed kWh to an external counter.
WLP-2 with Option E perform energy transfer calculation according to DS/EN1434. Resulting data may solely be used for technical purposes (distribution key), since the system's layout prevents sealing. For the same reason the system is not accredited for energy measurement.
Local protection of a particularly sensitive or exposed location from aggregate water by means of liquid sensors LS-X attached to the WLP system.
Functional description of the point protections, e.g. 'Cable Tray Corridor East', 'Floor Drain Building K5' er 'Heating Unit Central Stock 4b'
Response time of the point protection is adjustable from 1 sec to ½ hour. This permits tailoring the response to prevailing conditions, e.g. enabling the system to tolerate temporary wetness of a sensor during room cleaning procedures.
Specify whether the sensor must cut-off the district heating installation on aggregate water alarm.
Specify whether the system may automatically acknowledge an aggregate water alarm if the sensor subsequently dries up.
Specify the length of cable between sensor and computer - this should possible be part of the tender for electrical installations. An LS-X sensor may be equipped with up to 10,000ft of the suitable type of cable.
WLP-2 with option E is equipped with two temperature transmitters attached to two of the WLP computer's eight analog inputs. The remaining six may then be used e.g. for LS-X liquid sensors.
The WLP-2 standard issue employs mechanical flow meters. Where this is undesirable the system may instead be supplied with static (ultrasonic or magnetic inductive) flow meters at additional cost.

Project/case: _________________________________________  Encl: ___
 

 

Description of Leakage Protection System for District Heating Installation

The district heating installation of the building is to be equipped with a leakage protection system which continuously monitors the consumption and provides automatic installation cut-off on detection of a leakage. The system must further execute a distinct tightness test of the installation while simultaneously testing the functionality of all its primary components.

Maximum permissible combined pressure loss of all protection system components (flow meters and cut-off valves) at maximum load _____ m³/h: ____ kPa or. ____ mvs.

Special requirements (tick off):
 
 
  The protection system must comprise static flow meters

 

Connections to external equipment (tick off):
   The leakage protection system comprises a modem (POTS) for alarm dial-out and service
   The leakage protection system comprises a DCN data communication network connection
   Meter flow impulses are (scaled and) repeated to the BMS
   Status/alarm outputs are wired to the BMS/building alarm system/other...
   Communications port is wired to the BMS
   Energy impulse output is wired to the BMS/other...
   

Options (tick off):
 
 
  The leakage protection system is extended with technical energy transfer calculation

 
  The leakage protection is extended with point protection using liquid sensors situated as follows:
 
Point Protection
Loc.     Identification
Alarm Delay
sec.
Cut-Off
Y/N
Autoreset
Y/N
Cable
ext. m
  1.          
  2.          
  3.          
  4.          
  5.          
  6.          
  7. *)          
  8. *)          

*) Not available in combination with energy transfer calculation (Option E)